M: H Hartley Sweeten <hsweeten@visionengravers.com>
S: Odd Fixes
F: drivers/comedi/
+F: include/linux/comedi/
+F: include/uapi/linux/comedi.h
COMMON CLK FRAMEWORK
M: Michael Turquette <mturquette@baylibre.com>
+++ /dev/null
-/* SPDX-License-Identifier: LGPL-2.0+ */
-/*
- * comedi.h
- * header file for COMEDI user API
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
- */
-
-#ifndef _COMEDI_H
-#define _COMEDI_H
-
-#define COMEDI_MAJORVERSION 0
-#define COMEDI_MINORVERSION 7
-#define COMEDI_MICROVERSION 76
-#define VERSION "0.7.76"
-
-/* comedi's major device number */
-#define COMEDI_MAJOR 98
-
-/*
- * maximum number of minor devices. This can be increased, although
- * kernel structures are currently statically allocated, thus you
- * don't want this to be much more than you actually use.
- */
-#define COMEDI_NDEVICES 16
-
-/* number of config options in the config structure */
-#define COMEDI_NDEVCONFOPTS 32
-
-/*
- * NOTE: 'comedi_config --init-data' is deprecated
- *
- * The following indexes in the config options were used by
- * comedi_config to pass firmware blobs from user space to the
- * comedi drivers. The request_firmware() hotplug interface is
- * now used by all comedi drivers instead.
- */
-
-/* length of nth chunk of firmware data -*/
-#define COMEDI_DEVCONF_AUX_DATA3_LENGTH 25
-#define COMEDI_DEVCONF_AUX_DATA2_LENGTH 26
-#define COMEDI_DEVCONF_AUX_DATA1_LENGTH 27
-#define COMEDI_DEVCONF_AUX_DATA0_LENGTH 28
-/* most significant 32 bits of pointer address (if needed) */
-#define COMEDI_DEVCONF_AUX_DATA_HI 29
-/* least significant 32 bits of pointer address */
-#define COMEDI_DEVCONF_AUX_DATA_LO 30
-#define COMEDI_DEVCONF_AUX_DATA_LENGTH 31 /* total data length */
-
-/* max length of device and driver names */
-#define COMEDI_NAMELEN 20
-
-/* packs and unpacks a channel/range number */
-
-#define CR_PACK(chan, rng, aref) \
- ((((aref) & 0x3) << 24) | (((rng) & 0xff) << 16) | (chan))
-#define CR_PACK_FLAGS(chan, range, aref, flags) \
- (CR_PACK(chan, range, aref) | ((flags) & CR_FLAGS_MASK))
-
-#define CR_CHAN(a) ((a) & 0xffff)
-#define CR_RANGE(a) (((a) >> 16) & 0xff)
-#define CR_AREF(a) (((a) >> 24) & 0x03)
-
-#define CR_FLAGS_MASK 0xfc000000
-#define CR_ALT_FILTER 0x04000000
-#define CR_DITHER CR_ALT_FILTER
-#define CR_DEGLITCH CR_ALT_FILTER
-#define CR_ALT_SOURCE 0x08000000
-#define CR_EDGE 0x40000000
-#define CR_INVERT 0x80000000
-
-#define AREF_GROUND 0x00 /* analog ref = analog ground */
-#define AREF_COMMON 0x01 /* analog ref = analog common */
-#define AREF_DIFF 0x02 /* analog ref = differential */
-#define AREF_OTHER 0x03 /* analog ref = other (undefined) */
-
-/* counters -- these are arbitrary values */
-#define GPCT_RESET 0x0001
-#define GPCT_SET_SOURCE 0x0002
-#define GPCT_SET_GATE 0x0004
-#define GPCT_SET_DIRECTION 0x0008
-#define GPCT_SET_OPERATION 0x0010
-#define GPCT_ARM 0x0020
-#define GPCT_DISARM 0x0040
-#define GPCT_GET_INT_CLK_FRQ 0x0080
-
-#define GPCT_INT_CLOCK 0x0001
-#define GPCT_EXT_PIN 0x0002
-#define GPCT_NO_GATE 0x0004
-#define GPCT_UP 0x0008
-#define GPCT_DOWN 0x0010
-#define GPCT_HWUD 0x0020
-#define GPCT_SIMPLE_EVENT 0x0040
-#define GPCT_SINGLE_PERIOD 0x0080
-#define GPCT_SINGLE_PW 0x0100
-#define GPCT_CONT_PULSE_OUT 0x0200
-#define GPCT_SINGLE_PULSE_OUT 0x0400
-
-/* instructions */
-
-#define INSN_MASK_WRITE 0x8000000
-#define INSN_MASK_READ 0x4000000
-#define INSN_MASK_SPECIAL 0x2000000
-
-#define INSN_READ (0 | INSN_MASK_READ)
-#define INSN_WRITE (1 | INSN_MASK_WRITE)
-#define INSN_BITS (2 | INSN_MASK_READ | INSN_MASK_WRITE)
-#define INSN_CONFIG (3 | INSN_MASK_READ | INSN_MASK_WRITE)
-#define INSN_DEVICE_CONFIG (INSN_CONFIG | INSN_MASK_SPECIAL)
-#define INSN_GTOD (4 | INSN_MASK_READ | INSN_MASK_SPECIAL)
-#define INSN_WAIT (5 | INSN_MASK_WRITE | INSN_MASK_SPECIAL)
-#define INSN_INTTRIG (6 | INSN_MASK_WRITE | INSN_MASK_SPECIAL)
-
-/* command flags */
-/* These flags are used in comedi_cmd structures */
-
-#define CMDF_BOGUS 0x00000001 /* do the motions */
-
-/* try to use a real-time interrupt while performing command */
-#define CMDF_PRIORITY 0x00000008
-
-/* wake up on end-of-scan events */
-#define CMDF_WAKE_EOS 0x00000020
-
-#define CMDF_WRITE 0x00000040
-
-#define CMDF_RAWDATA 0x00000080
-
-/* timer rounding definitions */
-#define CMDF_ROUND_MASK 0x00030000
-#define CMDF_ROUND_NEAREST 0x00000000
-#define CMDF_ROUND_DOWN 0x00010000
-#define CMDF_ROUND_UP 0x00020000
-#define CMDF_ROUND_UP_NEXT 0x00030000
-
-#define COMEDI_EV_START 0x00040000
-#define COMEDI_EV_SCAN_BEGIN 0x00080000
-#define COMEDI_EV_CONVERT 0x00100000
-#define COMEDI_EV_SCAN_END 0x00200000
-#define COMEDI_EV_STOP 0x00400000
-
-/* compatibility definitions */
-#define TRIG_BOGUS CMDF_BOGUS
-#define TRIG_RT CMDF_PRIORITY
-#define TRIG_WAKE_EOS CMDF_WAKE_EOS
-#define TRIG_WRITE CMDF_WRITE
-#define TRIG_ROUND_MASK CMDF_ROUND_MASK
-#define TRIG_ROUND_NEAREST CMDF_ROUND_NEAREST
-#define TRIG_ROUND_DOWN CMDF_ROUND_DOWN
-#define TRIG_ROUND_UP CMDF_ROUND_UP
-#define TRIG_ROUND_UP_NEXT CMDF_ROUND_UP_NEXT
-
-/* trigger sources */
-
-#define TRIG_ANY 0xffffffff
-#define TRIG_INVALID 0x00000000
-
-#define TRIG_NONE 0x00000001 /* never trigger */
-#define TRIG_NOW 0x00000002 /* trigger now + N ns */
-#define TRIG_FOLLOW 0x00000004 /* trigger on next lower level trig */
-#define TRIG_TIME 0x00000008 /* trigger at time N ns */
-#define TRIG_TIMER 0x00000010 /* trigger at rate N ns */
-#define TRIG_COUNT 0x00000020 /* trigger when count reaches N */
-#define TRIG_EXT 0x00000040 /* trigger on external signal N */
-#define TRIG_INT 0x00000080 /* trigger on comedi-internal signal N */
-#define TRIG_OTHER 0x00000100 /* driver defined */
-
-/* subdevice flags */
-
-#define SDF_BUSY 0x0001 /* device is busy */
-#define SDF_BUSY_OWNER 0x0002 /* device is busy with your job */
-#define SDF_LOCKED 0x0004 /* subdevice is locked */
-#define SDF_LOCK_OWNER 0x0008 /* you own lock */
-#define SDF_MAXDATA 0x0010 /* maxdata depends on channel */
-#define SDF_FLAGS 0x0020 /* flags depend on channel */
-#define SDF_RANGETYPE 0x0040 /* range type depends on channel */
-#define SDF_PWM_COUNTER 0x0080 /* PWM can automatically switch off */
-#define SDF_PWM_HBRIDGE 0x0100 /* PWM is signed (H-bridge) */
-#define SDF_CMD 0x1000 /* can do commands (deprecated) */
-#define SDF_SOFT_CALIBRATED 0x2000 /* subdevice uses software calibration */
-#define SDF_CMD_WRITE 0x4000 /* can do output commands */
-#define SDF_CMD_READ 0x8000 /* can do input commands */
-
-/* subdevice can be read (e.g. analog input) */
-#define SDF_READABLE 0x00010000
-/* subdevice can be written (e.g. analog output) */
-#define SDF_WRITABLE 0x00020000
-#define SDF_WRITEABLE SDF_WRITABLE /* spelling error in API */
-/* subdevice does not have externally visible lines */
-#define SDF_INTERNAL 0x00040000
-#define SDF_GROUND 0x00100000 /* can do aref=ground */
-#define SDF_COMMON 0x00200000 /* can do aref=common */
-#define SDF_DIFF 0x00400000 /* can do aref=diff */
-#define SDF_OTHER 0x00800000 /* can do aref=other */
-#define SDF_DITHER 0x01000000 /* can do dithering */
-#define SDF_DEGLITCH 0x02000000 /* can do deglitching */
-#define SDF_MMAP 0x04000000 /* can do mmap() */
-#define SDF_RUNNING 0x08000000 /* subdevice is acquiring data */
-#define SDF_LSAMPL 0x10000000 /* subdevice uses 32-bit samples */
-#define SDF_PACKED 0x20000000 /* subdevice can do packed DIO */
-
-/* subdevice types */
-
-/**
- * enum comedi_subdevice_type - COMEDI subdevice types
- * @COMEDI_SUBD_UNUSED: Unused subdevice.
- * @COMEDI_SUBD_AI: Analog input.
- * @COMEDI_SUBD_AO: Analog output.
- * @COMEDI_SUBD_DI: Digital input.
- * @COMEDI_SUBD_DO: Digital output.
- * @COMEDI_SUBD_DIO: Digital input/output.
- * @COMEDI_SUBD_COUNTER: Counter.
- * @COMEDI_SUBD_TIMER: Timer.
- * @COMEDI_SUBD_MEMORY: Memory, EEPROM, DPRAM.
- * @COMEDI_SUBD_CALIB: Calibration DACs.
- * @COMEDI_SUBD_PROC: Processor, DSP.
- * @COMEDI_SUBD_SERIAL: Serial I/O.
- * @COMEDI_SUBD_PWM: Pulse-Width Modulation output.
- */
-enum comedi_subdevice_type {
- COMEDI_SUBD_UNUSED,
- COMEDI_SUBD_AI,
- COMEDI_SUBD_AO,
- COMEDI_SUBD_DI,
- COMEDI_SUBD_DO,
- COMEDI_SUBD_DIO,
- COMEDI_SUBD_COUNTER,
- COMEDI_SUBD_TIMER,
- COMEDI_SUBD_MEMORY,
- COMEDI_SUBD_CALIB,
- COMEDI_SUBD_PROC,
- COMEDI_SUBD_SERIAL,
- COMEDI_SUBD_PWM
-};
-
-/* configuration instructions */
-
-/**
- * enum comedi_io_direction - COMEDI I/O directions
- * @COMEDI_INPUT: Input.
- * @COMEDI_OUTPUT: Output.
- * @COMEDI_OPENDRAIN: Open-drain (or open-collector) output.
- *
- * These are used by the %INSN_CONFIG_DIO_QUERY configuration instruction to
- * report a direction. They may also be used in other places where a direction
- * needs to be specified.
- */
-enum comedi_io_direction {
- COMEDI_INPUT = 0,
- COMEDI_OUTPUT = 1,
- COMEDI_OPENDRAIN = 2
-};
-
-/**
- * enum configuration_ids - COMEDI configuration instruction codes
- * @INSN_CONFIG_DIO_INPUT: Configure digital I/O as input.
- * @INSN_CONFIG_DIO_OUTPUT: Configure digital I/O as output.
- * @INSN_CONFIG_DIO_OPENDRAIN: Configure digital I/O as open-drain (or open
- * collector) output.
- * @INSN_CONFIG_ANALOG_TRIG: Configure analog trigger.
- * @INSN_CONFIG_ALT_SOURCE: Configure alternate input source.
- * @INSN_CONFIG_DIGITAL_TRIG: Configure digital trigger.
- * @INSN_CONFIG_BLOCK_SIZE: Configure block size for DMA transfers.
- * @INSN_CONFIG_TIMER_1: Configure divisor for external clock.
- * @INSN_CONFIG_FILTER: Configure a filter.
- * @INSN_CONFIG_CHANGE_NOTIFY: Configure change notification for digital
- * inputs. (New drivers should use
- * %INSN_CONFIG_DIGITAL_TRIG instead.)
- * @INSN_CONFIG_SERIAL_CLOCK: Configure clock for serial I/O.
- * @INSN_CONFIG_BIDIRECTIONAL_DATA: Send and receive byte over serial I/O.
- * @INSN_CONFIG_DIO_QUERY: Query direction of digital I/O channel.
- * @INSN_CONFIG_PWM_OUTPUT: Configure pulse-width modulator output.
- * @INSN_CONFIG_GET_PWM_OUTPUT: Get pulse-width modulator output configuration.
- * @INSN_CONFIG_ARM: Arm a subdevice or channel.
- * @INSN_CONFIG_DISARM: Disarm a subdevice or channel.
- * @INSN_CONFIG_GET_COUNTER_STATUS: Get counter status.
- * @INSN_CONFIG_RESET: Reset a subdevice or channel.
- * @INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR: Configure counter/timer as
- * single pulse generator.
- * @INSN_CONFIG_GPCT_PULSE_TRAIN_GENERATOR: Configure counter/timer as
- * pulse train generator.
- * @INSN_CONFIG_GPCT_QUADRATURE_ENCODER: Configure counter as a quadrature
- * encoder.
- * @INSN_CONFIG_SET_GATE_SRC: Set counter/timer gate source.
- * @INSN_CONFIG_GET_GATE_SRC: Get counter/timer gate source.
- * @INSN_CONFIG_SET_CLOCK_SRC: Set counter/timer master clock source.
- * @INSN_CONFIG_GET_CLOCK_SRC: Get counter/timer master clock source.
- * @INSN_CONFIG_SET_OTHER_SRC: Set counter/timer "other" source.
- * @INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE: Get size (in bytes) of subdevice's
- * on-board FIFOs used during streaming
- * input/output.
- * @INSN_CONFIG_SET_COUNTER_MODE: Set counter/timer mode.
- * @INSN_CONFIG_8254_SET_MODE: (Deprecated) Same as
- * %INSN_CONFIG_SET_COUNTER_MODE.
- * @INSN_CONFIG_8254_READ_STATUS: Read status of 8254 counter channel.
- * @INSN_CONFIG_SET_ROUTING: Set routing for a channel.
- * @INSN_CONFIG_GET_ROUTING: Get routing for a channel.
- * @INSN_CONFIG_PWM_SET_PERIOD: Set PWM period in nanoseconds.
- * @INSN_CONFIG_PWM_GET_PERIOD: Get PWM period in nanoseconds.
- * @INSN_CONFIG_GET_PWM_STATUS: Get PWM status.
- * @INSN_CONFIG_PWM_SET_H_BRIDGE: Set PWM H bridge duty cycle and polarity for
- * a relay simultaneously.
- * @INSN_CONFIG_PWM_GET_H_BRIDGE: Get PWM H bridge duty cycle and polarity.
- * @INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS: Get the hardware timing restraints,
- * regardless of trigger sources.
- */
-enum configuration_ids {
- INSN_CONFIG_DIO_INPUT = COMEDI_INPUT,
- INSN_CONFIG_DIO_OUTPUT = COMEDI_OUTPUT,
- INSN_CONFIG_DIO_OPENDRAIN = COMEDI_OPENDRAIN,
- INSN_CONFIG_ANALOG_TRIG = 16,
-/* INSN_CONFIG_WAVEFORM = 17, */
-/* INSN_CONFIG_TRIG = 18, */
-/* INSN_CONFIG_COUNTER = 19, */
- INSN_CONFIG_ALT_SOURCE = 20,
- INSN_CONFIG_DIGITAL_TRIG = 21,
- INSN_CONFIG_BLOCK_SIZE = 22,
- INSN_CONFIG_TIMER_1 = 23,
- INSN_CONFIG_FILTER = 24,
- INSN_CONFIG_CHANGE_NOTIFY = 25,
-
- INSN_CONFIG_SERIAL_CLOCK = 26, /*ALPHA*/
- INSN_CONFIG_BIDIRECTIONAL_DATA = 27,
- INSN_CONFIG_DIO_QUERY = 28,
- INSN_CONFIG_PWM_OUTPUT = 29,
- INSN_CONFIG_GET_PWM_OUTPUT = 30,
- INSN_CONFIG_ARM = 31,
- INSN_CONFIG_DISARM = 32,
- INSN_CONFIG_GET_COUNTER_STATUS = 33,
- INSN_CONFIG_RESET = 34,
- INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR = 1001,
- INSN_CONFIG_GPCT_PULSE_TRAIN_GENERATOR = 1002,
- INSN_CONFIG_GPCT_QUADRATURE_ENCODER = 1003,
- INSN_CONFIG_SET_GATE_SRC = 2001,
- INSN_CONFIG_GET_GATE_SRC = 2002,
- INSN_CONFIG_SET_CLOCK_SRC = 2003,
- INSN_CONFIG_GET_CLOCK_SRC = 2004,
- INSN_CONFIG_SET_OTHER_SRC = 2005,
- INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE = 2006,
- INSN_CONFIG_SET_COUNTER_MODE = 4097,
- INSN_CONFIG_8254_SET_MODE = INSN_CONFIG_SET_COUNTER_MODE,
- INSN_CONFIG_8254_READ_STATUS = 4098,
- INSN_CONFIG_SET_ROUTING = 4099,
- INSN_CONFIG_GET_ROUTING = 4109,
- INSN_CONFIG_PWM_SET_PERIOD = 5000,
- INSN_CONFIG_PWM_GET_PERIOD = 5001,
- INSN_CONFIG_GET_PWM_STATUS = 5002,
- INSN_CONFIG_PWM_SET_H_BRIDGE = 5003,
- INSN_CONFIG_PWM_GET_H_BRIDGE = 5004,
- INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS = 5005,
-};
-
-/**
- * enum device_configuration_ids - COMEDI configuration instruction codes global
- * to an entire device.
- * @INSN_DEVICE_CONFIG_TEST_ROUTE: Validate the possibility of a
- * globally-named route
- * @INSN_DEVICE_CONFIG_CONNECT_ROUTE: Connect a globally-named route
- * @INSN_DEVICE_CONFIG_DISCONNECT_ROUTE:Disconnect a globally-named route
- * @INSN_DEVICE_CONFIG_GET_ROUTES: Get a list of all globally-named routes
- * that are valid for a particular device.
- */
-enum device_config_route_ids {
- INSN_DEVICE_CONFIG_TEST_ROUTE = 0,
- INSN_DEVICE_CONFIG_CONNECT_ROUTE = 1,
- INSN_DEVICE_CONFIG_DISCONNECT_ROUTE = 2,
- INSN_DEVICE_CONFIG_GET_ROUTES = 3,
-};
-
-/**
- * enum comedi_digital_trig_op - operations for configuring a digital trigger
- * @COMEDI_DIGITAL_TRIG_DISABLE: Return digital trigger to its default,
- * inactive, unconfigured state.
- * @COMEDI_DIGITAL_TRIG_ENABLE_EDGES: Set rising and/or falling edge inputs
- * that each can fire the trigger.
- * @COMEDI_DIGITAL_TRIG_ENABLE_LEVELS: Set a combination of high and/or low
- * level inputs that can fire the trigger.
- *
- * These are used with the %INSN_CONFIG_DIGITAL_TRIG configuration instruction.
- * The data for the configuration instruction is as follows...
- *
- * data[%0] = %INSN_CONFIG_DIGITAL_TRIG
- *
- * data[%1] = trigger ID
- *
- * data[%2] = configuration operation
- *
- * data[%3] = configuration parameter 1
- *
- * data[%4] = configuration parameter 2
- *
- * data[%5] = configuration parameter 3
- *
- * The trigger ID (data[%1]) is used to differentiate multiple digital triggers
- * belonging to the same subdevice. The configuration operation (data[%2]) is
- * one of the enum comedi_digital_trig_op values. The configuration
- * parameters (data[%3], data[%4], and data[%5]) depend on the operation; they
- * are not used with %COMEDI_DIGITAL_TRIG_DISABLE.
- *
- * For %COMEDI_DIGITAL_TRIG_ENABLE_EDGES and %COMEDI_DIGITAL_TRIG_ENABLE_LEVELS,
- * configuration parameter 1 (data[%3]) contains a "left-shift" value that
- * specifies the input corresponding to bit 0 of configuration parameters 2
- * and 3. This is useful if the trigger has more than 32 inputs.
- *
- * For %COMEDI_DIGITAL_TRIG_ENABLE_EDGES, configuration parameter 2 (data[%4])
- * specifies which of up to 32 inputs have rising-edge sensitivity, and
- * configuration parameter 3 (data[%5]) specifies which of up to 32 inputs
- * have falling-edge sensitivity that can fire the trigger.
- *
- * For %COMEDI_DIGITAL_TRIG_ENABLE_LEVELS, configuration parameter 2 (data[%4])
- * specifies which of up to 32 inputs must be at a high level, and
- * configuration parameter 3 (data[%5]) specifies which of up to 32 inputs
- * must be at a low level for the trigger to fire.
- *
- * Some sequences of %INSN_CONFIG_DIGITAL_TRIG instructions may have a (partly)
- * accumulative effect, depending on the low-level driver. This is useful
- * when setting up a trigger that has more than 32 inputs, or has a combination
- * of edge- and level-triggered inputs.
- */
-enum comedi_digital_trig_op {
- COMEDI_DIGITAL_TRIG_DISABLE = 0,
- COMEDI_DIGITAL_TRIG_ENABLE_EDGES = 1,
- COMEDI_DIGITAL_TRIG_ENABLE_LEVELS = 2
-};
-
-/**
- * enum comedi_support_level - support level for a COMEDI feature
- * @COMEDI_UNKNOWN_SUPPORT: Unspecified support for feature.
- * @COMEDI_SUPPORTED: Feature is supported.
- * @COMEDI_UNSUPPORTED: Feature is unsupported.
- */
-enum comedi_support_level {
- COMEDI_UNKNOWN_SUPPORT = 0,
- COMEDI_SUPPORTED,
- COMEDI_UNSUPPORTED
-};
-
-/**
- * enum comedi_counter_status_flags - counter status bits
- * @COMEDI_COUNTER_ARMED: Counter is armed.
- * @COMEDI_COUNTER_COUNTING: Counter is counting.
- * @COMEDI_COUNTER_TERMINAL_COUNT: Counter reached terminal count.
- *
- * These bitwise values are used by the %INSN_CONFIG_GET_COUNTER_STATUS
- * configuration instruction to report the status of a counter.
- */
-enum comedi_counter_status_flags {
- COMEDI_COUNTER_ARMED = 0x1,
- COMEDI_COUNTER_COUNTING = 0x2,
- COMEDI_COUNTER_TERMINAL_COUNT = 0x4,
-};
-
-/* ioctls */
-
-#define CIO 'd'
-#define COMEDI_DEVCONFIG _IOW(CIO, 0, struct comedi_devconfig)
-#define COMEDI_DEVINFO _IOR(CIO, 1, struct comedi_devinfo)
-#define COMEDI_SUBDINFO _IOR(CIO, 2, struct comedi_subdinfo)
-#define COMEDI_CHANINFO _IOR(CIO, 3, struct comedi_chaninfo)
-/* _IOWR(CIO, 4, ...) is reserved */
-#define COMEDI_LOCK _IO(CIO, 5)
-#define COMEDI_UNLOCK _IO(CIO, 6)
-#define COMEDI_CANCEL _IO(CIO, 7)
-#define COMEDI_RANGEINFO _IOR(CIO, 8, struct comedi_rangeinfo)
-#define COMEDI_CMD _IOR(CIO, 9, struct comedi_cmd)
-#define COMEDI_CMDTEST _IOR(CIO, 10, struct comedi_cmd)
-#define COMEDI_INSNLIST _IOR(CIO, 11, struct comedi_insnlist)
-#define COMEDI_INSN _IOR(CIO, 12, struct comedi_insn)
-#define COMEDI_BUFCONFIG _IOR(CIO, 13, struct comedi_bufconfig)
-#define COMEDI_BUFINFO _IOWR(CIO, 14, struct comedi_bufinfo)
-#define COMEDI_POLL _IO(CIO, 15)
-#define COMEDI_SETRSUBD _IO(CIO, 16)
-#define COMEDI_SETWSUBD _IO(CIO, 17)
-
-/* structures */
-
-/**
- * struct comedi_insn - COMEDI instruction
- * @insn: COMEDI instruction type (%INSN_xxx).
- * @n: Length of @data[].
- * @data: Pointer to data array operated on by the instruction.
- * @subdev: Subdevice index.
- * @chanspec: A packed "chanspec" value consisting of channel number,
- * analog range index, analog reference type, and flags.
- * @unused: Reserved for future use.
- *
- * This is used with the %COMEDI_INSN ioctl, and indirectly with the
- * %COMEDI_INSNLIST ioctl.
- */
-struct comedi_insn {
- unsigned int insn;
- unsigned int n;
- unsigned int __user *data;
- unsigned int subdev;
- unsigned int chanspec;
- unsigned int unused[3];
-};
-
-/**
- * struct comedi_insnlist - list of COMEDI instructions
- * @n_insns: Number of COMEDI instructions.
- * @insns: Pointer to array COMEDI instructions.
- *
- * This is used with the %COMEDI_INSNLIST ioctl.
- */
-struct comedi_insnlist {
- unsigned int n_insns;
- struct comedi_insn __user *insns;
-};
-
-/**
- * struct comedi_cmd - COMEDI asynchronous acquisition command details
- * @subdev: Subdevice index.
- * @flags: Command flags (%CMDF_xxx).
- * @start_src: "Start acquisition" trigger source (%TRIG_xxx).
- * @start_arg: "Start acquisition" trigger argument.
- * @scan_begin_src: "Scan begin" trigger source.
- * @scan_begin_arg: "Scan begin" trigger argument.
- * @convert_src: "Convert" trigger source.
- * @convert_arg: "Convert" trigger argument.
- * @scan_end_src: "Scan end" trigger source.
- * @scan_end_arg: "Scan end" trigger argument.
- * @stop_src: "Stop acquisition" trigger source.
- * @stop_arg: "Stop acquisition" trigger argument.
- * @chanlist: Pointer to array of "chanspec" values, containing a
- * sequence of channel numbers packed with analog range
- * index, etc.
- * @chanlist_len: Number of channels in sequence.
- * @data: Pointer to miscellaneous set-up data (not used).
- * @data_len: Length of miscellaneous set-up data.
- *
- * This is used with the %COMEDI_CMD or %COMEDI_CMDTEST ioctl to set-up
- * or validate an asynchronous acquisition command. The ioctl may modify
- * the &struct comedi_cmd and copy it back to the caller.
- *
- * Optional command @flags values that can be ORed together...
- *
- * %CMDF_BOGUS - makes %COMEDI_CMD ioctl return error %EAGAIN instead of
- * starting the command.
- *
- * %CMDF_PRIORITY - requests "hard real-time" processing (which is not
- * supported in this version of COMEDI).
- *
- * %CMDF_WAKE_EOS - requests the command makes data available for reading
- * after every "scan" period.
- *
- * %CMDF_WRITE - marks the command as being in the "write" (to device)
- * direction. This does not need to be specified by the caller unless the
- * subdevice supports commands in either direction.
- *
- * %CMDF_RAWDATA - prevents the command from "munging" the data between the
- * COMEDI sample format and the raw hardware sample format.
- *
- * %CMDF_ROUND_NEAREST - requests timing periods to be rounded to nearest
- * supported values.
- *
- * %CMDF_ROUND_DOWN - requests timing periods to be rounded down to supported
- * values (frequencies rounded up).
- *
- * %CMDF_ROUND_UP - requests timing periods to be rounded up to supported
- * values (frequencies rounded down).
- *
- * Trigger source values for @start_src, @scan_begin_src, @convert_src,
- * @scan_end_src, and @stop_src...
- *
- * %TRIG_ANY - "all ones" value used to test which trigger sources are
- * supported.
- *
- * %TRIG_INVALID - "all zeroes" value used to indicate that all requested
- * trigger sources are invalid.
- *
- * %TRIG_NONE - never trigger (often used as a @stop_src value).
- *
- * %TRIG_NOW - trigger after '_arg' nanoseconds.
- *
- * %TRIG_FOLLOW - trigger follows another event.
- *
- * %TRIG_TIMER - trigger every '_arg' nanoseconds.
- *
- * %TRIG_COUNT - trigger when count '_arg' is reached.
- *
- * %TRIG_EXT - trigger on external signal specified by '_arg'.
- *
- * %TRIG_INT - trigger on internal, software trigger specified by '_arg'.
- *
- * %TRIG_OTHER - trigger on other, driver-defined signal specified by '_arg'.
- */
-struct comedi_cmd {
- unsigned int subdev;
- unsigned int flags;
-
- unsigned int start_src;
- unsigned int start_arg;
-
- unsigned int scan_begin_src;
- unsigned int scan_begin_arg;
-
- unsigned int convert_src;
- unsigned int convert_arg;
-
- unsigned int scan_end_src;
- unsigned int scan_end_arg;
-
- unsigned int stop_src;
- unsigned int stop_arg;
-
- unsigned int *chanlist;
- unsigned int chanlist_len;
-
- short __user *data;
- unsigned int data_len;
-};
-
-/**
- * struct comedi_chaninfo - used to retrieve per-channel information
- * @subdev: Subdevice index.
- * @maxdata_list: Optional pointer to per-channel maximum data values.
- * @flaglist: Optional pointer to per-channel flags.
- * @rangelist: Optional pointer to per-channel range types.
- * @unused: Reserved for future use.
- *
- * This is used with the %COMEDI_CHANINFO ioctl to get per-channel information
- * for the subdevice. Use of this requires knowledge of the number of channels
- * and subdevice flags obtained using the %COMEDI_SUBDINFO ioctl.
- *
- * The @maxdata_list member must be %NULL unless the %SDF_MAXDATA subdevice
- * flag is set. The @flaglist member must be %NULL unless the %SDF_FLAGS
- * subdevice flag is set. The @rangelist member must be %NULL unless the
- * %SDF_RANGETYPE subdevice flag is set. Otherwise, the arrays they point to
- * must be at least as long as the number of channels.
- */
-struct comedi_chaninfo {
- unsigned int subdev;
- unsigned int __user *maxdata_list;
- unsigned int __user *flaglist;
- unsigned int __user *rangelist;
- unsigned int unused[4];
-};
-
-/**
- * struct comedi_rangeinfo - used to retrieve the range table for a channel
- * @range_type: Encodes subdevice index (bits 27:24), channel index
- * (bits 23:16) and range table length (bits 15:0).
- * @range_ptr: Pointer to array of @struct comedi_krange to be filled
- * in with the range table for the channel or subdevice.
- *
- * This is used with the %COMEDI_RANGEINFO ioctl to retrieve the range table
- * for a specific channel (if the subdevice has the %SDF_RANGETYPE flag set to
- * indicate that the range table depends on the channel), or for the subdevice
- * as a whole (if the %SDF_RANGETYPE flag is clear, indicating the range table
- * is shared by all channels).
- *
- * The @range_type value is an input to the ioctl and comes from a previous
- * use of the %COMEDI_SUBDINFO ioctl (if the %SDF_RANGETYPE flag is clear),
- * or the %COMEDI_CHANINFO ioctl (if the %SDF_RANGETYPE flag is set).
- */
-struct comedi_rangeinfo {
- unsigned int range_type;
- void __user *range_ptr;
-};
-
-/**
- * struct comedi_krange - describes a range in a range table
- * @min: Minimum value in millionths (1e-6) of a unit.
- * @max: Maximum value in millionths (1e-6) of a unit.
- * @flags: Indicates the units (in bits 7:0) OR'ed with optional flags.
- *
- * A range table is associated with a single channel, or with all channels in a
- * subdevice, and a list of one or more ranges. A %struct comedi_krange
- * describes the physical range of units for one of those ranges. Sample
- * values in COMEDI are unsigned from %0 up to some 'maxdata' value. The
- * mapping from sample values to physical units is assumed to be nomimally
- * linear (for the purpose of describing the range), with sample value %0
- * mapping to @min, and the 'maxdata' sample value mapping to @max.
- *
- * The currently defined units are %UNIT_volt (%0), %UNIT_mA (%1), and
- * %UNIT_none (%2). The @min and @max values are the physical range multiplied
- * by 1e6, so a @max value of %1000000 (with %UNIT_volt) represents a maximal
- * value of 1 volt.
- *
- * The only defined flag value is %RF_EXTERNAL (%0x100), indicating that the
- * range needs to be multiplied by an external reference.
- */
-struct comedi_krange {
- int min;
- int max;
- unsigned int flags;
-};
-
-/**
- * struct comedi_subdinfo - used to retrieve information about a subdevice
- * @type: Type of subdevice from &enum comedi_subdevice_type.
- * @n_chan: Number of channels the subdevice supports.
- * @subd_flags: A mixture of static and dynamic flags describing
- * aspects of the subdevice and its current state.
- * @timer_type: Timer type. Always set to %5 ("nanosecond timer").
- * @len_chanlist: Maximum length of a channel list if the subdevice
- * supports asynchronous acquisition commands.
- * @maxdata: Maximum sample value for all channels if the
- * %SDF_MAXDATA subdevice flag is clear.
- * @flags: Channel flags for all channels if the %SDF_FLAGS
- * subdevice flag is clear.
- * @range_type: The range type for all channels if the %SDF_RANGETYPE
- * subdevice flag is clear. Encodes the subdevice index
- * (bits 27:24), a dummy channel index %0 (bits 23:16),
- * and the range table length (bits 15:0).
- * @settling_time_0: Not used.
- * @insn_bits_support: Set to %COMEDI_SUPPORTED if the subdevice supports the
- * %INSN_BITS instruction, or to %COMEDI_UNSUPPORTED if it
- * does not.
- * @unused: Reserved for future use.
- *
- * This is used with the %COMEDI_SUBDINFO ioctl which copies an array of
- * &struct comedi_subdinfo back to user space, with one element per subdevice.
- * Use of this requires knowledge of the number of subdevices obtained from
- * the %COMEDI_DEVINFO ioctl.
- *
- * These are the @subd_flags values that may be ORed together...
- *
- * %SDF_BUSY - the subdevice is busy processing an asynchronous command or a
- * synchronous instruction.
- *
- * %SDF_BUSY_OWNER - the subdevice is busy processing an asynchronous
- * acquisition command started on the current file object (the file object
- * issuing the %COMEDI_SUBDINFO ioctl).
- *
- * %SDF_LOCKED - the subdevice is locked by a %COMEDI_LOCK ioctl.
- *
- * %SDF_LOCK_OWNER - the subdevice is locked by a %COMEDI_LOCK ioctl from the
- * current file object.
- *
- * %SDF_MAXDATA - maximum sample values are channel-specific.
- *
- * %SDF_FLAGS - channel flags are channel-specific.
- *
- * %SDF_RANGETYPE - range types are channel-specific.
- *
- * %SDF_PWM_COUNTER - PWM can switch off automatically.
- *
- * %SDF_PWM_HBRIDGE - or PWM is signed (H-bridge).
- *
- * %SDF_CMD - the subdevice supports asynchronous commands.
- *
- * %SDF_SOFT_CALIBRATED - the subdevice uses software calibration.
- *
- * %SDF_CMD_WRITE - the subdevice supports asynchronous commands in the output
- * ("write") direction.
- *
- * %SDF_CMD_READ - the subdevice supports asynchronous commands in the input
- * ("read") direction.
- *
- * %SDF_READABLE - the subdevice is readable (e.g. analog input).
- *
- * %SDF_WRITABLE (aliased as %SDF_WRITEABLE) - the subdevice is writable (e.g.
- * analog output).
- *
- * %SDF_INTERNAL - the subdevice has no externally visible lines.
- *
- * %SDF_GROUND - the subdevice can use ground as an analog reference.
- *
- * %SDF_COMMON - the subdevice can use a common analog reference.
- *
- * %SDF_DIFF - the subdevice can use differential inputs (or outputs).
- *
- * %SDF_OTHER - the subdevice can use some other analog reference.
- *
- * %SDF_DITHER - the subdevice can do dithering.
- *
- * %SDF_DEGLITCH - the subdevice can do deglitching.
- *
- * %SDF_MMAP - this is never set.
- *
- * %SDF_RUNNING - an asynchronous command is still running.
- *
- * %SDF_LSAMPL - the subdevice uses "long" (32-bit) samples (for asynchronous
- * command data).
- *
- * %SDF_PACKED - the subdevice packs several DIO samples into a single sample
- * (for asynchronous command data).
- *
- * No "channel flags" (@flags) values are currently defined.
- */
-struct comedi_subdinfo {
- unsigned int type;
- unsigned int n_chan;
- unsigned int subd_flags;
- unsigned int timer_type;
- unsigned int len_chanlist;
- unsigned int maxdata;
- unsigned int flags;
- unsigned int range_type;
- unsigned int settling_time_0;
- unsigned int insn_bits_support;
- unsigned int unused[8];
-};
-
-/**
- * struct comedi_devinfo - used to retrieve information about a COMEDI device
- * @version_code: COMEDI version code.
- * @n_subdevs: Number of subdevices the device has.
- * @driver_name: Null-terminated COMEDI driver name.
- * @board_name: Null-terminated COMEDI board name.
- * @read_subdevice: Index of the current "read" subdevice (%-1 if none).
- * @write_subdevice: Index of the current "write" subdevice (%-1 if none).
- * @unused: Reserved for future use.
- *
- * This is used with the %COMEDI_DEVINFO ioctl to get basic information about
- * the device.
- */
-struct comedi_devinfo {
- unsigned int version_code;
- unsigned int n_subdevs;
- char driver_name[COMEDI_NAMELEN];
- char board_name[COMEDI_NAMELEN];
- int read_subdevice;
- int write_subdevice;
- int unused[30];
-};
-
-/**
- * struct comedi_devconfig - used to configure a legacy COMEDI device
- * @board_name: Null-terminated string specifying the type of board
- * to configure.
- * @options: An array of integer configuration options.
- *
- * This is used with the %COMEDI_DEVCONFIG ioctl to configure a "legacy" COMEDI
- * device, such as an ISA card. Not all COMEDI drivers support this. Those
- * that do either expect the specified board name to match one of a list of
- * names registered with the COMEDI core, or expect the specified board name
- * to match the COMEDI driver name itself. The configuration options are
- * handled in a driver-specific manner.
- */
-struct comedi_devconfig {
- char board_name[COMEDI_NAMELEN];
- int options[COMEDI_NDEVCONFOPTS];
-};
-
-/**
- * struct comedi_bufconfig - used to set or get buffer size for a subdevice
- * @subdevice: Subdevice index.
- * @flags: Not used.
- * @maximum_size: Maximum allowed buffer size.
- * @size: Buffer size.
- * @unused: Reserved for future use.
- *
- * This is used with the %COMEDI_BUFCONFIG ioctl to get or configure the
- * maximum buffer size and current buffer size for a COMEDI subdevice that
- * supports asynchronous commands. If the subdevice does not support
- * asynchronous commands, @maximum_size and @size are ignored and set to 0.
- *
- * On ioctl input, non-zero values of @maximum_size and @size specify a
- * new maximum size and new current size (in bytes), respectively. These
- * will by rounded up to a multiple of %PAGE_SIZE. Specifying a new maximum
- * size requires admin capabilities.
- *
- * On ioctl output, @maximum_size and @size and set to the current maximum
- * buffer size and current buffer size, respectively.
- */
-struct comedi_bufconfig {
- unsigned int subdevice;
- unsigned int flags;
-
- unsigned int maximum_size;
- unsigned int size;
-
- unsigned int unused[4];
-};
-
-/**
- * struct comedi_bufinfo - used to manipulate buffer position for a subdevice
- * @subdevice: Subdevice index.
- * @bytes_read: Specify amount to advance read position for an
- * asynchronous command in the input ("read") direction.
- * @buf_write_ptr: Current write position (index) within the buffer.
- * @buf_read_ptr: Current read position (index) within the buffer.
- * @buf_write_count: Total amount written, modulo 2^32.
- * @buf_read_count: Total amount read, modulo 2^32.
- * @bytes_written: Specify amount to advance write position for an
- * asynchronous command in the output ("write") direction.
- * @unused: Reserved for future use.
- *
- * This is used with the %COMEDI_BUFINFO ioctl to optionally advance the
- * current read or write position in an asynchronous acquisition data buffer,
- * and to get the current read and write positions in the buffer.
- */
-struct comedi_bufinfo {
- unsigned int subdevice;
- unsigned int bytes_read;
-
- unsigned int buf_write_ptr;
- unsigned int buf_read_ptr;
- unsigned int buf_write_count;
- unsigned int buf_read_count;
-
- unsigned int bytes_written;
-
- unsigned int unused[4];
-};
-
-/* range stuff */
-
-#define __RANGE(a, b) ((((a) & 0xffff) << 16) | ((b) & 0xffff))
-
-#define RANGE_OFFSET(a) (((a) >> 16) & 0xffff)
-#define RANGE_LENGTH(b) ((b) & 0xffff)
-
-#define RF_UNIT(flags) ((flags) & 0xff)
-#define RF_EXTERNAL 0x100
-
-#define UNIT_volt 0
-#define UNIT_mA 1
-#define UNIT_none 2
-
-#define COMEDI_MIN_SPEED 0xffffffffu
-
-/**********************************************************/
-/* everything after this line is ALPHA */
-/**********************************************************/
-
-/*
- * 8254 specific configuration.
- *
- * It supports two config commands:
- *
- * 0 ID: INSN_CONFIG_SET_COUNTER_MODE
- * 1 8254 Mode
- * I8254_MODE0, I8254_MODE1, ..., I8254_MODE5
- * OR'ed with:
- * I8254_BCD, I8254_BINARY
- *
- * 0 ID: INSN_CONFIG_8254_READ_STATUS
- * 1 <-- Status byte returned here.
- * B7 = Output
- * B6 = NULL Count
- * B5 - B0 Current mode.
- */
-
-enum i8254_mode {
- I8254_MODE0 = (0 << 1), /* Interrupt on terminal count */
- I8254_MODE1 = (1 << 1), /* Hardware retriggerable one-shot */
- I8254_MODE2 = (2 << 1), /* Rate generator */
- I8254_MODE3 = (3 << 1), /* Square wave mode */
- I8254_MODE4 = (4 << 1), /* Software triggered strobe */
- /* Hardware triggered strobe (retriggerable) */
- I8254_MODE5 = (5 << 1),
- /* Use binary-coded decimal instead of binary (pretty useless) */
- I8254_BCD = 1,
- I8254_BINARY = 0
-};
-
-/* *** BEGIN GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */
-
-/*
- * Common National Instruments Terminal/Signal names.
- * Some of these have no NI_ prefix as they are useful for non-NI hardware, such
- * as those that utilize the PXI/RTSI trigger lines.
- *
- * NOTE ABOUT THE CHOICE OF NAMES HERE AND THE CAMELSCRIPT:
- * The choice to use CamelScript and the exact names below is for
- * maintainability, clarity, similarity to manufacturer's documentation,
- * _and_ a mitigation for confusion that has plagued the use of these drivers
- * for years!
- *
- * More detail:
- * There have been significant confusions over the past many years for users
- * when trying to understand how to connect to/from signals and terminals on
- * NI hardware using comedi. The major reason for this is that the actual
- * register values were exposed and required to be used by users. Several
- * major reasons exist why this caused major confusion for users:
- * 1) The register values are _NOT_ in user documentation, but rather in
- * arcane locations, such as a few register programming manuals that are
- * increasingly hard to find and the NI MHDDK (comments in example code).
- * There is no one place to find the various valid values of the registers.
- * 2) The register values are _NOT_ completely consistent. There is no way to
- * gain any sense of intuition of which values, or even enums one should use
- * for various registers. There was some attempt in prior use of comedi to
- * name enums such that a user might know which enums should be used for
- * varying purposes, but the end-user had to gain a knowledge of register
- * values to correctly wield this approach.
- * 3) The names for signals and registers found in the various register level
- * programming manuals and vendor-provided documentation are _not_ even
- * close to the same names that are in the end-user documentation.
- *
- * Similar, albeit less, confusion plagued NI's previous version of their own
- * drivers. Earlier than 2003, NI greatly simplified the situation for users
- * by releasing a new API that abstracted the names of signals/terminals to a
- * common and intuitive set of names.
- *
- * The names below mirror the names chosen and well documented by NI. These
- * names are exposed to the user via the comedilib user library. By keeping
- * the names below, in spite of the use of CamelScript, maintenance will be
- * greatly eased and confusion for users _and_ comedi developers will be
- * greatly reduced.
- */
-
-/*
- * Base of abstracted NI names.
- * The first 16 bits of *_arg are reserved for channel selection.
- * Since we only actually need the first 4 or 5 bits for all register values on
- * NI select registers anyways, we'll identify all values >= (1<<15) as being an
- * abstracted NI signal/terminal name.
- * These values are also used/returned by INSN_DEVICE_CONFIG_TEST_ROUTE,
- * INSN_DEVICE_CONFIG_CONNECT_ROUTE, INSN_DEVICE_CONFIG_DISCONNECT_ROUTE,
- * and INSN_DEVICE_CONFIG_GET_ROUTES.
- */
-#define NI_NAMES_BASE 0x8000u
-
-#define _TERM_N(base, n, x) ((base) + ((x) & ((n) - 1)))
-
-/*
- * not necessarily all allowed 64 PFIs are valid--certainly not for all devices
- */
-#define NI_PFI(x) _TERM_N(NI_NAMES_BASE, 64, x)
-/* 8 trigger lines by standard, Some devices cannot talk to all eight. */
-#define TRIGGER_LINE(x) _TERM_N(NI_PFI(-1) + 1, 8, x)
-/* 4 RTSI shared MUXes to route signals to/from TRIGGER_LINES on NI hardware */
-#define NI_RTSI_BRD(x) _TERM_N(TRIGGER_LINE(-1) + 1, 4, x)
-
-/* *** Counter/timer names : 8 counters max *** */
-#define NI_MAX_COUNTERS 8
-#define NI_COUNTER_NAMES_BASE (NI_RTSI_BRD(-1) + 1)
-#define NI_CtrSource(x) _TERM_N(NI_COUNTER_NAMES_BASE, NI_MAX_COUNTERS, x)
-/* Gate, Aux, A,B,Z are all treated, at times as gates */
-#define NI_GATES_NAMES_BASE (NI_CtrSource(-1) + 1)
-#define NI_CtrGate(x) _TERM_N(NI_GATES_NAMES_BASE, NI_MAX_COUNTERS, x)
-#define NI_CtrAux(x) _TERM_N(NI_CtrGate(-1) + 1, NI_MAX_COUNTERS, x)
-#define NI_CtrA(x) _TERM_N(NI_CtrAux(-1) + 1, NI_MAX_COUNTERS, x)
-#define NI_CtrB(x) _TERM_N(NI_CtrA(-1) + 1, NI_MAX_COUNTERS, x)
-#define NI_CtrZ(x) _TERM_N(NI_CtrB(-1) + 1, NI_MAX_COUNTERS, x)
-#define NI_GATES_NAMES_MAX NI_CtrZ(-1)
-#define NI_CtrArmStartTrigger(x) _TERM_N(NI_CtrZ(-1) + 1, NI_MAX_COUNTERS, x)
-#define NI_CtrInternalOutput(x) \
- _TERM_N(NI_CtrArmStartTrigger(-1) + 1, NI_MAX_COUNTERS, x)
-/** external pin(s) labeled conveniently as Ctr<i>Out. */
-#define NI_CtrOut(x) _TERM_N(NI_CtrInternalOutput(-1) + 1, NI_MAX_COUNTERS, x)
-/** For Buffered sampling of ctr -- x series capability. */
-#define NI_CtrSampleClock(x) _TERM_N(NI_CtrOut(-1) + 1, NI_MAX_COUNTERS, x)
-#define NI_COUNTER_NAMES_MAX NI_CtrSampleClock(-1)
-
-enum ni_common_signal_names {
- /* PXI_Star: this is a non-NI-specific signal */
- PXI_Star = NI_COUNTER_NAMES_MAX + 1,
- PXI_Clk10,
- PXIe_Clk100,
- NI_AI_SampleClock,
- NI_AI_SampleClockTimebase,
- NI_AI_StartTrigger,
- NI_AI_ReferenceTrigger,
- NI_AI_ConvertClock,
- NI_AI_ConvertClockTimebase,
- NI_AI_PauseTrigger,
- NI_AI_HoldCompleteEvent,
- NI_AI_HoldComplete,
- NI_AI_ExternalMUXClock,
- NI_AI_STOP, /* pulse signal that occurs when a update is finished(?) */
- NI_AO_SampleClock,
- NI_AO_SampleClockTimebase,
- NI_AO_StartTrigger,
- NI_AO_PauseTrigger,
- NI_DI_SampleClock,
- NI_DI_SampleClockTimebase,
- NI_DI_StartTrigger,
- NI_DI_ReferenceTrigger,
- NI_DI_PauseTrigger,
- NI_DI_InputBufferFull,
- NI_DI_ReadyForStartEvent,
- NI_DI_ReadyForTransferEventBurst,
- NI_DI_ReadyForTransferEventPipelined,
- NI_DO_SampleClock,
- NI_DO_SampleClockTimebase,
- NI_DO_StartTrigger,
- NI_DO_PauseTrigger,
- NI_DO_OutputBufferFull,
- NI_DO_DataActiveEvent,
- NI_DO_ReadyForStartEvent,
- NI_DO_ReadyForTransferEvent,
- NI_MasterTimebase,
- NI_20MHzTimebase,
- NI_80MHzTimebase,
- NI_100MHzTimebase,
- NI_200MHzTimebase,
- NI_100kHzTimebase,
- NI_10MHzRefClock,
- NI_FrequencyOutput,
- NI_ChangeDetectionEvent,
- NI_AnalogComparisonEvent,
- NI_WatchdogExpiredEvent,
- NI_WatchdogExpirationTrigger,
- NI_SCXI_Trig1,
- NI_LogicLow,
- NI_LogicHigh,
- NI_ExternalStrobe,
- NI_PFI_DO,
- NI_CaseGround,
- /* special internal signal used as variable source for RTSI bus: */
- NI_RGOUT0,
-
- /* just a name to make the next more convenient, regardless of above */
- _NI_NAMES_MAX_PLUS_1,
- NI_NUM_NAMES = _NI_NAMES_MAX_PLUS_1 - NI_NAMES_BASE,
-};
-
-/* *** END GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */
-
-#define NI_USUAL_PFI_SELECT(x) (((x) < 10) ? (0x1 + (x)) : (0xb + (x)))
-#define NI_USUAL_RTSI_SELECT(x) (((x) < 7) ? (0xb + (x)) : 0x1b)
-
-/*
- * mode bits for NI general-purpose counters, set with
- * INSN_CONFIG_SET_COUNTER_MODE
- */
-#define NI_GPCT_COUNTING_MODE_SHIFT 16
-#define NI_GPCT_INDEX_PHASE_BITSHIFT 20
-#define NI_GPCT_COUNTING_DIRECTION_SHIFT 24
-enum ni_gpct_mode_bits {
- NI_GPCT_GATE_ON_BOTH_EDGES_BIT = 0x4,
- NI_GPCT_EDGE_GATE_MODE_MASK = 0x18,
- NI_GPCT_EDGE_GATE_STARTS_STOPS_BITS = 0x0,
- NI_GPCT_EDGE_GATE_STOPS_STARTS_BITS = 0x8,
- NI_GPCT_EDGE_GATE_STARTS_BITS = 0x10,
- NI_GPCT_EDGE_GATE_NO_STARTS_NO_STOPS_BITS = 0x18,
- NI_GPCT_STOP_MODE_MASK = 0x60,
- NI_GPCT_STOP_ON_GATE_BITS = 0x00,
- NI_GPCT_STOP_ON_GATE_OR_TC_BITS = 0x20,
- NI_GPCT_STOP_ON_GATE_OR_SECOND_TC_BITS = 0x40,
- NI_GPCT_LOAD_B_SELECT_BIT = 0x80,
- NI_GPCT_OUTPUT_MODE_MASK = 0x300,
- NI_GPCT_OUTPUT_TC_PULSE_BITS = 0x100,
- NI_GPCT_OUTPUT_TC_TOGGLE_BITS = 0x200,
- NI_GPCT_OUTPUT_TC_OR_GATE_TOGGLE_BITS = 0x300,
- NI_GPCT_HARDWARE_DISARM_MASK = 0xc00,
- NI_GPCT_NO_HARDWARE_DISARM_BITS = 0x000,
- NI_GPCT_DISARM_AT_TC_BITS = 0x400,
- NI_GPCT_DISARM_AT_GATE_BITS = 0x800,
- NI_GPCT_DISARM_AT_TC_OR_GATE_BITS = 0xc00,
- NI_GPCT_LOADING_ON_TC_BIT = 0x1000,
- NI_GPCT_LOADING_ON_GATE_BIT = 0x4000,
- NI_GPCT_COUNTING_MODE_MASK = 0x7 << NI_GPCT_COUNTING_MODE_SHIFT,
- NI_GPCT_COUNTING_MODE_NORMAL_BITS =
- 0x0 << NI_GPCT_COUNTING_MODE_SHIFT,
- NI_GPCT_COUNTING_MODE_QUADRATURE_X1_BITS =
- 0x1 << NI_GPCT_COUNTING_MODE_SHIFT,
- NI_GPCT_COUNTING_MODE_QUADRATURE_X2_BITS =
- 0x2 << NI_GPCT_COUNTING_MODE_SHIFT,
- NI_GPCT_COUNTING_MODE_QUADRATURE_X4_BITS =
- 0x3 << NI_GPCT_COUNTING_MODE_SHIFT,
- NI_GPCT_COUNTING_MODE_TWO_PULSE_BITS =
- 0x4 << NI_GPCT_COUNTING_MODE_SHIFT,
- NI_GPCT_COUNTING_MODE_SYNC_SOURCE_BITS =
- 0x6 << NI_GPCT_COUNTING_MODE_SHIFT,
- NI_GPCT_INDEX_PHASE_MASK = 0x3 << NI_GPCT_INDEX_PHASE_BITSHIFT,
- NI_GPCT_INDEX_PHASE_LOW_A_LOW_B_BITS =
- 0x0 << NI_GPCT_INDEX_PHASE_BITSHIFT,
- NI_GPCT_INDEX_PHASE_LOW_A_HIGH_B_BITS =
- 0x1 << NI_GPCT_INDEX_PHASE_BITSHIFT,
- NI_GPCT_INDEX_PHASE_HIGH_A_LOW_B_BITS =
- 0x2 << NI_GPCT_INDEX_PHASE_BITSHIFT,
- NI_GPCT_INDEX_PHASE_HIGH_A_HIGH_B_BITS =
- 0x3 << NI_GPCT_INDEX_PHASE_BITSHIFT,
- NI_GPCT_INDEX_ENABLE_BIT = 0x400000,
- NI_GPCT_COUNTING_DIRECTION_MASK =
- 0x3 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
- NI_GPCT_COUNTING_DIRECTION_DOWN_BITS =
- 0x00 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
- NI_GPCT_COUNTING_DIRECTION_UP_BITS =
- 0x1 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
- NI_GPCT_COUNTING_DIRECTION_HW_UP_DOWN_BITS =
- 0x2 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
- NI_GPCT_COUNTING_DIRECTION_HW_GATE_BITS =
- 0x3 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
- NI_GPCT_RELOAD_SOURCE_MASK = 0xc000000,
- NI_GPCT_RELOAD_SOURCE_FIXED_BITS = 0x0,
- NI_GPCT_RELOAD_SOURCE_SWITCHING_BITS = 0x4000000,
- NI_GPCT_RELOAD_SOURCE_GATE_SELECT_BITS = 0x8000000,
- NI_GPCT_OR_GATE_BIT = 0x10000000,
- NI_GPCT_INVERT_OUTPUT_BIT = 0x20000000
-};
-
-/*
- * Bits for setting a clock source with
- * INSN_CONFIG_SET_CLOCK_SRC when using NI general-purpose counters.
- */
-enum ni_gpct_clock_source_bits {
- NI_GPCT_CLOCK_SRC_SELECT_MASK = 0x3f,
- NI_GPCT_TIMEBASE_1_CLOCK_SRC_BITS = 0x0,
- NI_GPCT_TIMEBASE_2_CLOCK_SRC_BITS = 0x1,
- NI_GPCT_TIMEBASE_3_CLOCK_SRC_BITS = 0x2,
- NI_GPCT_LOGIC_LOW_CLOCK_SRC_BITS = 0x3,
- NI_GPCT_NEXT_GATE_CLOCK_SRC_BITS = 0x4,
- NI_GPCT_NEXT_TC_CLOCK_SRC_BITS = 0x5,
- /* NI 660x-specific */
- NI_GPCT_SOURCE_PIN_i_CLOCK_SRC_BITS = 0x6,
- NI_GPCT_PXI10_CLOCK_SRC_BITS = 0x7,
- NI_GPCT_PXI_STAR_TRIGGER_CLOCK_SRC_BITS = 0x8,
- NI_GPCT_ANALOG_TRIGGER_OUT_CLOCK_SRC_BITS = 0x9,
- NI_GPCT_PRESCALE_MODE_CLOCK_SRC_MASK = 0x30000000,
- NI_GPCT_NO_PRESCALE_CLOCK_SRC_BITS = 0x0,
- /* divide source by 2 */
- NI_GPCT_PRESCALE_X2_CLOCK_SRC_BITS = 0x10000000,
- /* divide source by 8 */
- NI_GPCT_PRESCALE_X8_CLOCK_SRC_BITS = 0x20000000,
- NI_GPCT_INVERT_CLOCK_SRC_BIT = 0x80000000
-};
-
-/* NI 660x-specific */
-#define NI_GPCT_SOURCE_PIN_CLOCK_SRC_BITS(x) (0x10 + (x))
-
-#define NI_GPCT_RTSI_CLOCK_SRC_BITS(x) (0x18 + (x))
-
-/* no pfi on NI 660x */
-#define NI_GPCT_PFI_CLOCK_SRC_BITS(x) (0x20 + (x))
-
-/*
- * Possibilities for setting a gate source with
- * INSN_CONFIG_SET_GATE_SRC when using NI general-purpose counters.
- * May be bitwise-or'd with CR_EDGE or CR_INVERT.
- */
-enum ni_gpct_gate_select {
- /* m-series gates */
- NI_GPCT_TIMESTAMP_MUX_GATE_SELECT = 0x0,
- NI_GPCT_AI_START2_GATE_SELECT = 0x12,
- NI_GPCT_PXI_STAR_TRIGGER_GATE_SELECT = 0x13,
- NI_GPCT_NEXT_OUT_GATE_SELECT = 0x14,
- NI_GPCT_AI_START1_GATE_SELECT = 0x1c,
- NI_GPCT_NEXT_SOURCE_GATE_SELECT = 0x1d,
- NI_GPCT_ANALOG_TRIGGER_OUT_GATE_SELECT = 0x1e,
- NI_GPCT_LOGIC_LOW_GATE_SELECT = 0x1f,
- /* more gates for 660x */
- NI_GPCT_SOURCE_PIN_i_GATE_SELECT = 0x100,
- NI_GPCT_GATE_PIN_i_GATE_SELECT = 0x101,
- /* more gates for 660x "second gate" */
- NI_GPCT_UP_DOWN_PIN_i_GATE_SELECT = 0x201,
- NI_GPCT_SELECTED_GATE_GATE_SELECT = 0x21e,
- /*
- * m-series "second gate" sources are unknown,
- * we should add them here with an offset of 0x300 when
- * known.
- */
- NI_GPCT_DISABLED_GATE_SELECT = 0x8000,
-};
-
-#define NI_GPCT_GATE_PIN_GATE_SELECT(x) (0x102 + (x))
-#define NI_GPCT_RTSI_GATE_SELECT(x) NI_USUAL_RTSI_SELECT(x)
-#define NI_GPCT_PFI_GATE_SELECT(x) NI_USUAL_PFI_SELECT(x)
-#define NI_GPCT_UP_DOWN_PIN_GATE_SELECT(x) (0x202 + (x))
-
-/*
- * Possibilities for setting a source with
- * INSN_CONFIG_SET_OTHER_SRC when using NI general-purpose counters.
- */
-enum ni_gpct_other_index {
- NI_GPCT_SOURCE_ENCODER_A,
- NI_GPCT_SOURCE_ENCODER_B,
- NI_GPCT_SOURCE_ENCODER_Z
-};
-
-enum ni_gpct_other_select {
- /* m-series gates */
- /* Still unknown, probably only need NI_GPCT_PFI_OTHER_SELECT */
- NI_GPCT_DISABLED_OTHER_SELECT = 0x8000,
-};
-
-#define NI_GPCT_PFI_OTHER_SELECT(x) NI_USUAL_PFI_SELECT(x)
-
-/*
- * start sources for ni general-purpose counters for use with
- * INSN_CONFIG_ARM
- */
-enum ni_gpct_arm_source {
- NI_GPCT_ARM_IMMEDIATE = 0x0,
- /*
- * Start both the counter and the adjacent paired counter simultaneously
- */
- NI_GPCT_ARM_PAIRED_IMMEDIATE = 0x1,
- /*
- * If the NI_GPCT_HW_ARM bit is set, we will pass the least significant
- * bits (3 bits for 660x or 5 bits for m-series) through to the
- * hardware. To select a hardware trigger, pass the appropriate select
- * bit, e.g.,
- * NI_GPCT_HW_ARM | NI_GPCT_AI_START1_GATE_SELECT or
- * NI_GPCT_HW_ARM | NI_GPCT_PFI_GATE_SELECT(pfi_number)
- */
- NI_GPCT_HW_ARM = 0x1000,
- NI_GPCT_ARM_UNKNOWN = NI_GPCT_HW_ARM, /* for backward compatibility */
-};
-
-/* digital filtering options for ni 660x for use with INSN_CONFIG_FILTER. */
-enum ni_gpct_filter_select {
- NI_GPCT_FILTER_OFF = 0x0,
- NI_GPCT_FILTER_TIMEBASE_3_SYNC = 0x1,
- NI_GPCT_FILTER_100x_TIMEBASE_1 = 0x2,
- NI_GPCT_FILTER_20x_TIMEBASE_1 = 0x3,
- NI_GPCT_FILTER_10x_TIMEBASE_1 = 0x4,
- NI_GPCT_FILTER_2x_TIMEBASE_1 = 0x5,
- NI_GPCT_FILTER_2x_TIMEBASE_3 = 0x6
-};
-
-/*
- * PFI digital filtering options for ni m-series for use with
- * INSN_CONFIG_FILTER.
- */
-enum ni_pfi_filter_select {
- NI_PFI_FILTER_OFF = 0x0,
- NI_PFI_FILTER_125ns = 0x1,
- NI_PFI_FILTER_6425ns = 0x2,
- NI_PFI_FILTER_2550us = 0x3
-};
-
-/* master clock sources for ni mio boards and INSN_CONFIG_SET_CLOCK_SRC */
-enum ni_mio_clock_source {
- NI_MIO_INTERNAL_CLOCK = 0,
- /*
- * Doesn't work for m-series, use NI_MIO_PLL_RTSI_CLOCK()
- * the NI_MIO_PLL_* sources are m-series only
- */
- NI_MIO_RTSI_CLOCK = 1,
- NI_MIO_PLL_PXI_STAR_TRIGGER_CLOCK = 2,
- NI_MIO_PLL_PXI10_CLOCK = 3,
- NI_MIO_PLL_RTSI0_CLOCK = 4
-};
-
-#define NI_MIO_PLL_RTSI_CLOCK(x) (NI_MIO_PLL_RTSI0_CLOCK + (x))
-
-/*
- * Signals which can be routed to an NI RTSI pin with INSN_CONFIG_SET_ROUTING.
- * The numbers assigned are not arbitrary, they correspond to the bits required
- * to program the board.
- */
-enum ni_rtsi_routing {
- NI_RTSI_OUTPUT_ADR_START1 = 0,
- NI_RTSI_OUTPUT_ADR_START2 = 1,
- NI_RTSI_OUTPUT_SCLKG = 2,
- NI_RTSI_OUTPUT_DACUPDN = 3,
- NI_RTSI_OUTPUT_DA_START1 = 4,
- NI_RTSI_OUTPUT_G_SRC0 = 5,
- NI_RTSI_OUTPUT_G_GATE0 = 6,
- NI_RTSI_OUTPUT_RGOUT0 = 7,
- NI_RTSI_OUTPUT_RTSI_BRD_0 = 8,
- /* Pre-m-series always have RTSI clock on line 7 */
- NI_RTSI_OUTPUT_RTSI_OSC = 12
-};
-
-#define NI_RTSI_OUTPUT_RTSI_BRD(x) (NI_RTSI_OUTPUT_RTSI_BRD_0 + (x))
-
-/*
- * Signals which can be routed to an NI PFI pin on an m-series board with
- * INSN_CONFIG_SET_ROUTING. These numbers are also returned by
- * INSN_CONFIG_GET_ROUTING on pre-m-series boards, even though their routing
- * cannot be changed. The numbers assigned are not arbitrary, they correspond
- * to the bits required to program the board.
- */
-enum ni_pfi_routing {
- NI_PFI_OUTPUT_PFI_DEFAULT = 0,
- NI_PFI_OUTPUT_AI_START1 = 1,
- NI_PFI_OUTPUT_AI_START2 = 2,
- NI_PFI_OUTPUT_AI_CONVERT = 3,
- NI_PFI_OUTPUT_G_SRC1 = 4,
- NI_PFI_OUTPUT_G_GATE1 = 5,
- NI_PFI_OUTPUT_AO_UPDATE_N = 6,
- NI_PFI_OUTPUT_AO_START1 = 7,
- NI_PFI_OUTPUT_AI_START_PULSE = 8,
- NI_PFI_OUTPUT_G_SRC0 = 9,
- NI_PFI_OUTPUT_G_GATE0 = 10,
- NI_PFI_OUTPUT_EXT_STROBE = 11,
- NI_PFI_OUTPUT_AI_EXT_MUX_CLK = 12,
- NI_PFI_OUTPUT_GOUT0 = 13,
- NI_PFI_OUTPUT_GOUT1 = 14,
- NI_PFI_OUTPUT_FREQ_OUT = 15,
- NI_PFI_OUTPUT_PFI_DO = 16,
- NI_PFI_OUTPUT_I_ATRIG = 17,
- NI_PFI_OUTPUT_RTSI0 = 18,
- NI_PFI_OUTPUT_PXI_STAR_TRIGGER_IN = 26,
- NI_PFI_OUTPUT_SCXI_TRIG1 = 27,
- NI_PFI_OUTPUT_DIO_CHANGE_DETECT_RTSI = 28,
- NI_PFI_OUTPUT_CDI_SAMPLE = 29,
- NI_PFI_OUTPUT_CDO_UPDATE = 30
-};
-
-#define NI_PFI_OUTPUT_RTSI(x) (NI_PFI_OUTPUT_RTSI0 + (x))
-
-/*
- * Signals which can be routed to output on a NI PFI pin on a 660x board
- * with INSN_CONFIG_SET_ROUTING. The numbers assigned are
- * not arbitrary, they correspond to the bits required
- * to program the board. Lines 0 to 7 can only be set to
- * NI_660X_PFI_OUTPUT_DIO. Lines 32 to 39 can only be set to
- * NI_660X_PFI_OUTPUT_COUNTER.
- */
-enum ni_660x_pfi_routing {
- NI_660X_PFI_OUTPUT_COUNTER = 1, /* counter */
- NI_660X_PFI_OUTPUT_DIO = 2, /* static digital output */
-};
-
-/*
- * NI External Trigger lines. These values are not arbitrary, but are related
- * to the bits required to program the board (offset by 1 for historical
- * reasons).
- */
-#define NI_EXT_PFI(x) (NI_USUAL_PFI_SELECT(x) - 1)
-#define NI_EXT_RTSI(x) (NI_USUAL_RTSI_SELECT(x) - 1)
-
-/*
- * Clock sources for CDIO subdevice on NI m-series boards. Used as the
- * scan_begin_arg for a comedi_command. These sources may also be bitwise-or'd
- * with CR_INVERT to change polarity.
- */
-enum ni_m_series_cdio_scan_begin_src {
- NI_CDIO_SCAN_BEGIN_SRC_GROUND = 0,
- NI_CDIO_SCAN_BEGIN_SRC_AI_START = 18,
- NI_CDIO_SCAN_BEGIN_SRC_AI_CONVERT = 19,
- NI_CDIO_SCAN_BEGIN_SRC_PXI_STAR_TRIGGER = 20,
- NI_CDIO_SCAN_BEGIN_SRC_G0_OUT = 28,
- NI_CDIO_SCAN_BEGIN_SRC_G1_OUT = 29,
- NI_CDIO_SCAN_BEGIN_SRC_ANALOG_TRIGGER = 30,
- NI_CDIO_SCAN_BEGIN_SRC_AO_UPDATE = 31,
- NI_CDIO_SCAN_BEGIN_SRC_FREQ_OUT = 32,
- NI_CDIO_SCAN_BEGIN_SRC_DIO_CHANGE_DETECT_IRQ = 33
-};
-
-#define NI_CDIO_SCAN_BEGIN_SRC_PFI(x) NI_USUAL_PFI_SELECT(x)
-#define NI_CDIO_SCAN_BEGIN_SRC_RTSI(x) NI_USUAL_RTSI_SELECT(x)
-
-/*
- * scan_begin_src for scan_begin_arg==TRIG_EXT with analog output command on NI
- * boards. These scan begin sources can also be bitwise-or'd with CR_INVERT to
- * change polarity.
- */
-#define NI_AO_SCAN_BEGIN_SRC_PFI(x) NI_USUAL_PFI_SELECT(x)
-#define NI_AO_SCAN_BEGIN_SRC_RTSI(x) NI_USUAL_RTSI_SELECT(x)
-
-/*
- * Bits for setting a clock source with
- * INSN_CONFIG_SET_CLOCK_SRC when using NI frequency output subdevice.
- */
-enum ni_freq_out_clock_source_bits {
- NI_FREQ_OUT_TIMEBASE_1_DIV_2_CLOCK_SRC, /* 10 MHz */
- NI_FREQ_OUT_TIMEBASE_2_CLOCK_SRC /* 100 KHz */
-};
-
-/*
- * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
- * 8254 counter subdevices on Amplicon DIO boards (amplc_dio200 driver).
- */
-enum amplc_dio_clock_source {
- /*
- * Per channel external clock
- * input/output pin (pin is only an
- * input when clock source set to this value,
- * otherwise it is an output)
- */
- AMPLC_DIO_CLK_CLKN,
- AMPLC_DIO_CLK_10MHZ, /* 10 MHz internal clock */
- AMPLC_DIO_CLK_1MHZ, /* 1 MHz internal clock */
- AMPLC_DIO_CLK_100KHZ, /* 100 kHz internal clock */
- AMPLC_DIO_CLK_10KHZ, /* 10 kHz internal clock */
- AMPLC_DIO_CLK_1KHZ, /* 1 kHz internal clock */
- /*
- * Output of preceding counter channel
- * (for channel 0, preceding counter
- * channel is channel 2 on preceding
- * counter subdevice, for first counter
- * subdevice, preceding counter
- * subdevice is the last counter
- * subdevice)
- */
- AMPLC_DIO_CLK_OUTNM1,
- AMPLC_DIO_CLK_EXT, /* per chip external input pin */
- /* the following are "enhanced" clock sources for PCIe models */
- AMPLC_DIO_CLK_VCC, /* clock input HIGH */
- AMPLC_DIO_CLK_GND, /* clock input LOW */
- AMPLC_DIO_CLK_PAT_PRESENT, /* "pattern present" signal */
- AMPLC_DIO_CLK_20MHZ /* 20 MHz internal clock */
-};
-
-/*
- * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
- * timer subdevice on some Amplicon DIO PCIe boards (amplc_dio200 driver).
- */
-enum amplc_dio_ts_clock_src {
- AMPLC_DIO_TS_CLK_1GHZ, /* 1 ns period with 20 ns granularity */
- AMPLC_DIO_TS_CLK_1MHZ, /* 1 us period */
- AMPLC_DIO_TS_CLK_1KHZ /* 1 ms period */
-};
-
-/*
- * Values for setting a gate source with INSN_CONFIG_SET_GATE_SRC for
- * 8254 counter subdevices on Amplicon DIO boards (amplc_dio200 driver).
- */
-enum amplc_dio_gate_source {
- AMPLC_DIO_GAT_VCC, /* internal high logic level */
- AMPLC_DIO_GAT_GND, /* internal low logic level */
- AMPLC_DIO_GAT_GATN, /* per channel external gate input */
- /*
- * negated output of counter channel minus 2
- * (for channels 0 or 1, channel minus 2 is channel 1 or 2 on
- * the preceding counter subdevice, for the first counter subdevice
- * the preceding counter subdevice is the last counter subdevice)
- */
- AMPLC_DIO_GAT_NOUTNM2,
- AMPLC_DIO_GAT_RESERVED4,
- AMPLC_DIO_GAT_RESERVED5,
- AMPLC_DIO_GAT_RESERVED6,
- AMPLC_DIO_GAT_RESERVED7,
- /* the following are "enhanced" gate sources for PCIe models */
- AMPLC_DIO_GAT_NGATN = 6, /* negated per channel gate input */
- /* non-negated output of counter channel minus 2 */
- AMPLC_DIO_GAT_OUTNM2,
- AMPLC_DIO_GAT_PAT_PRESENT, /* "pattern present" signal */
- AMPLC_DIO_GAT_PAT_OCCURRED, /* "pattern occurred" latched */
- AMPLC_DIO_GAT_PAT_GONE, /* "pattern gone away" latched */
- AMPLC_DIO_GAT_NPAT_PRESENT, /* negated "pattern present" */
- AMPLC_DIO_GAT_NPAT_OCCURRED, /* negated "pattern occurred" */
- AMPLC_DIO_GAT_NPAT_GONE /* negated "pattern gone away" */
-};
-
-/*
- * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
- * the counter subdevice on the Kolter Electronic PCI-Counter board
- * (ke_counter driver).
- */
-enum ke_counter_clock_source {
- KE_CLK_20MHZ, /* internal 20MHz (default) */
- KE_CLK_4MHZ, /* internal 4MHz (option) */
- KE_CLK_EXT /* external clock on pin 21 of D-Sub */
-};
-
-#endif /* _COMEDI_H */
#include <linux/vmalloc.h>
#include <linux/slab.h>
-
-#include "comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_internal.h"
#ifdef PAGE_KERNEL_NOCACHE
#include <linux/poll.h>
#include <linux/device.h>
#include <linux/fs.h>
-#include "comedidev.h"
+#include <linux/comedi/comedidev.h>
#include <linux/cdev.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/**
* comedi_to_pci_dev() - Return PCI device attached to COMEDI device
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * comedi_pci.h
- * header file for Comedi PCI drivers
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
- */
-
-#ifndef _COMEDI_PCI_H
-#define _COMEDI_PCI_H
-
-#include <linux/pci.h>
-
-#include "comedidev.h"
-
-/*
- * PCI Vendor IDs not in <linux/pci_ids.h>
- */
-#define PCI_VENDOR_ID_KOLTER 0x1001
-#define PCI_VENDOR_ID_ICP 0x104c
-#define PCI_VENDOR_ID_DT 0x1116
-#define PCI_VENDOR_ID_IOTECH 0x1616
-#define PCI_VENDOR_ID_CONTEC 0x1221
-#define PCI_VENDOR_ID_RTD 0x1435
-#define PCI_VENDOR_ID_HUMUSOFT 0x186c
-
-struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev);
-
-int comedi_pci_enable(struct comedi_device *dev);
-void comedi_pci_disable(struct comedi_device *dev);
-void comedi_pci_detach(struct comedi_device *dev);
-
-int comedi_pci_auto_config(struct pci_dev *pcidev, struct comedi_driver *driver,
- unsigned long context);
-void comedi_pci_auto_unconfig(struct pci_dev *pcidev);
-
-int comedi_pci_driver_register(struct comedi_driver *comedi_driver,
- struct pci_driver *pci_driver);
-void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
- struct pci_driver *pci_driver);
-
-/**
- * module_comedi_pci_driver() - Helper macro for registering a comedi PCI driver
- * @__comedi_driver: comedi_driver struct
- * @__pci_driver: pci_driver struct
- *
- * Helper macro for comedi PCI drivers which do not do anything special
- * in module init/exit. This eliminates a lot of boilerplate. Each
- * module may only use this macro once, and calling it replaces
- * module_init() and module_exit()
- */
-#define module_comedi_pci_driver(__comedi_driver, __pci_driver) \
- module_driver(__comedi_driver, comedi_pci_driver_register, \
- comedi_pci_driver_unregister, &(__pci_driver))
-
-#endif /* _COMEDI_PCI_H */
#include <linux/module.h>
#include <linux/kernel.h>
-
-#include "comedi_pcmcia.h"
+#include <linux/comedi/comedi_pcmcia.h>
/**
* comedi_to_pcmcia_dev() - Return PCMCIA device attached to COMEDI device
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * comedi_pcmcia.h
- * header file for Comedi PCMCIA drivers
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
- */
-
-#ifndef _COMEDI_PCMCIA_H
-#define _COMEDI_PCMCIA_H
-
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ds.h>
-
-#include "comedidev.h"
-
-struct pcmcia_device *comedi_to_pcmcia_dev(struct comedi_device *dev);
-
-int comedi_pcmcia_enable(struct comedi_device *dev,
- int (*conf_check)(struct pcmcia_device *p_dev,
- void *priv_data));
-void comedi_pcmcia_disable(struct comedi_device *dev);
-
-int comedi_pcmcia_auto_config(struct pcmcia_device *link,
- struct comedi_driver *driver);
-void comedi_pcmcia_auto_unconfig(struct pcmcia_device *link);
-
-int comedi_pcmcia_driver_register(struct comedi_driver *comedi_driver,
- struct pcmcia_driver *pcmcia_driver);
-void comedi_pcmcia_driver_unregister(struct comedi_driver *comedi_driver,
- struct pcmcia_driver *pcmcia_driver);
-
-/**
- * module_comedi_pcmcia_driver() - Helper macro for registering a comedi
- * PCMCIA driver
- * @__comedi_driver: comedi_driver struct
- * @__pcmcia_driver: pcmcia_driver struct
- *
- * Helper macro for comedi PCMCIA drivers which do not do anything special
- * in module init/exit. This eliminates a lot of boilerplate. Each
- * module may only use this macro once, and calling it replaces
- * module_init() and module_exit()
- */
-#define module_comedi_pcmcia_driver(__comedi_driver, __pcmcia_driver) \
- module_driver(__comedi_driver, comedi_pcmcia_driver_register, \
- comedi_pcmcia_driver_unregister, &(__pcmcia_driver))
-
-#endif /* _COMEDI_PCMCIA_H */
*/
#include <linux/module.h>
-
-#include "comedi_usb.h"
+#include <linux/comedi/comedi_usb.h>
/**
* comedi_to_usb_interface() - Return USB interface attached to COMEDI device
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/* comedi_usb.h
- * header file for USB Comedi drivers
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
- */
-
-#ifndef _COMEDI_USB_H
-#define _COMEDI_USB_H
-
-#include <linux/usb.h>
-
-#include "comedidev.h"
-
-struct usb_interface *comedi_to_usb_interface(struct comedi_device *dev);
-struct usb_device *comedi_to_usb_dev(struct comedi_device *dev);
-
-int comedi_usb_auto_config(struct usb_interface *intf,
- struct comedi_driver *driver, unsigned long context);
-void comedi_usb_auto_unconfig(struct usb_interface *intf);
-
-int comedi_usb_driver_register(struct comedi_driver *comedi_driver,
- struct usb_driver *usb_driver);
-void comedi_usb_driver_unregister(struct comedi_driver *comedi_driver,
- struct usb_driver *usb_driver);
-
-/**
- * module_comedi_usb_driver() - Helper macro for registering a comedi USB driver
- * @__comedi_driver: comedi_driver struct
- * @__usb_driver: usb_driver struct
- *
- * Helper macro for comedi USB drivers which do not do anything special
- * in module init/exit. This eliminates a lot of boilerplate. Each
- * module may only use this macro once, and calling it replaces
- * module_init() and module_exit()
- */
-#define module_comedi_usb_driver(__comedi_driver, __usb_driver) \
- module_driver(__comedi_driver, comedi_usb_driver_register, \
- comedi_usb_driver_unregister, &(__usb_driver))
-
-#endif /* _COMEDI_USB_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * comedidev.h
- * header file for kernel-only structures, variables, and constants
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
- */
-
-#ifndef _COMEDIDEV_H
-#define _COMEDIDEV_H
-
-#include <linux/dma-mapping.h>
-#include <linux/mutex.h>
-#include <linux/spinlock_types.h>
-#include <linux/rwsem.h>
-#include <linux/kref.h>
-
-#include "comedi.h"
-
-#define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
-#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \
- COMEDI_MINORVERSION, COMEDI_MICROVERSION)
-#define COMEDI_RELEASE VERSION
-
-#define COMEDI_NUM_BOARD_MINORS 0x30
-
-/**
- * struct comedi_subdevice - Working data for a COMEDI subdevice
- * @device: COMEDI device to which this subdevice belongs. (Initialized by
- * comedi_alloc_subdevices().)
- * @index: Index of this subdevice within device's array of subdevices.
- * (Initialized by comedi_alloc_subdevices().)
- * @type: Type of subdevice from &enum comedi_subdevice_type. (Initialized by
- * the low-level driver.)
- * @n_chan: Number of channels the subdevice supports. (Initialized by the
- * low-level driver.)
- * @subdev_flags: Various "SDF" flags indicating aspects of the subdevice to
- * the COMEDI core and user application. (Initialized by the low-level
- * driver.)
- * @len_chanlist: Maximum length of a channel list if the subdevice supports
- * asynchronous acquisition commands. (Optionally initialized by the
- * low-level driver, or changed from 0 to 1 during post-configuration.)
- * @private: Private data pointer which is either set by the low-level driver
- * itself, or by a call to comedi_alloc_spriv() which allocates storage.
- * In the latter case, the storage is automatically freed after the
- * low-level driver's "detach" handler is called for the device.
- * (Initialized by the low-level driver.)
- * @async: Pointer to &struct comedi_async id the subdevice supports
- * asynchronous acquisition commands. (Allocated and initialized during
- * post-configuration if needed.)
- * @lock: Pointer to a file object that performed a %COMEDI_LOCK ioctl on the
- * subdevice. (Initially NULL.)
- * @busy: Pointer to a file object that is performing an asynchronous
- * acquisition command on the subdevice. (Initially NULL.)
- * @runflags: Internal flags for use by COMEDI core, mostly indicating whether
- * an asynchronous acquisition command is running.
- * @spin_lock: Generic spin-lock for use by the COMEDI core and the low-level
- * driver. (Initialized by comedi_alloc_subdevices().)
- * @io_bits: Bit-mask indicating the channel directions for a DIO subdevice
- * with no more than 32 channels. A '1' at a bit position indicates the
- * corresponding channel is configured as an output. (Initialized by the
- * low-level driver for a DIO subdevice. Forced to all-outputs during
- * post-configuration for a digital output subdevice.)
- * @maxdata: If non-zero, this is the maximum raw data value of each channel.
- * If zero, the maximum data value is channel-specific. (Initialized by
- * the low-level driver.)
- * @maxdata_list: If the maximum data value is channel-specific, this points
- * to an array of maximum data values indexed by channel index.
- * (Initialized by the low-level driver.)
- * @range_table: If non-NULL, this points to a COMEDI range table for the
- * subdevice. If NULL, the range table is channel-specific. (Initialized
- * by the low-level driver, will be set to an "invalid" range table during
- * post-configuration if @range_table and @range_table_list are both
- * NULL.)
- * @range_table_list: If the COMEDI range table is channel-specific, this
- * points to an array of pointers to COMEDI range tables indexed by
- * channel number. (Initialized by the low-level driver.)
- * @chanlist: Not used.
- * @insn_read: Optional pointer to a handler for the %INSN_READ instruction.
- * (Initialized by the low-level driver, or set to a default handler
- * during post-configuration.)
- * @insn_write: Optional pointer to a handler for the %INSN_WRITE instruction.
- * (Initialized by the low-level driver, or set to a default handler
- * during post-configuration.)
- * @insn_bits: Optional pointer to a handler for the %INSN_BITS instruction
- * for a digital input, digital output or digital input/output subdevice.
- * (Initialized by the low-level driver, or set to a default handler
- * during post-configuration.)
- * @insn_config: Optional pointer to a handler for the %INSN_CONFIG
- * instruction. (Initialized by the low-level driver, or set to a default
- * handler during post-configuration.)
- * @do_cmd: If the subdevice supports asynchronous acquisition commands, this
- * points to a handler to set it up in hardware. (Initialized by the
- * low-level driver.)
- * @do_cmdtest: If the subdevice supports asynchronous acquisition commands,
- * this points to a handler used to check and possibly tweak a prospective
- * acquisition command without setting it up in hardware. (Initialized by
- * the low-level driver.)
- * @poll: If the subdevice supports asynchronous acquisition commands, this
- * is an optional pointer to a handler for the %COMEDI_POLL ioctl which
- * instructs the low-level driver to synchronize buffers. (Initialized by
- * the low-level driver if needed.)
- * @cancel: If the subdevice supports asynchronous acquisition commands, this
- * points to a handler used to terminate a running command. (Initialized
- * by the low-level driver.)
- * @buf_change: If the subdevice supports asynchronous acquisition commands,
- * this is an optional pointer to a handler that is called when the data
- * buffer for handling asynchronous commands is allocated or reallocated.
- * (Initialized by the low-level driver if needed.)
- * @munge: If the subdevice supports asynchronous acquisition commands and
- * uses DMA to transfer data from the hardware to the acquisition buffer,
- * this points to a function used to "munge" the data values from the
- * hardware into the format expected by COMEDI. (Initialized by the
- * low-level driver if needed.)
- * @async_dma_dir: If the subdevice supports asynchronous acquisition commands
- * and uses DMA to transfer data from the hardware to the acquisition
- * buffer, this sets the DMA direction for the buffer. (initialized to
- * %DMA_NONE by comedi_alloc_subdevices() and changed by the low-level
- * driver if necessary.)
- * @state: Handy bit-mask indicating the output states for a DIO or digital
- * output subdevice with no more than 32 channels. (Initialized by the
- * low-level driver.)
- * @class_dev: If the subdevice supports asynchronous acquisition commands,
- * this points to a sysfs comediX_subdY device where X is the minor device
- * number of the COMEDI device and Y is the subdevice number. The minor
- * device number for the sysfs device is allocated dynamically in the
- * range 48 to 255. This is used to allow the COMEDI device to be opened
- * with a different default read or write subdevice. (Allocated during
- * post-configuration if needed.)
- * @minor: If @class_dev is set, this is its dynamically allocated minor
- * device number. (Set during post-configuration if necessary.)
- * @readback: Optional pointer to memory allocated by
- * comedi_alloc_subdev_readback() used to hold the values written to
- * analog output channels so they can be read back. The storage is
- * automatically freed after the low-level driver's "detach" handler is
- * called for the device. (Initialized by the low-level driver.)
- *
- * This is the main control structure for a COMEDI subdevice. If the subdevice
- * supports asynchronous acquisition commands, additional information is stored
- * in the &struct comedi_async pointed to by @async.
- *
- * Most of the subdevice is initialized by the low-level driver's "attach" or
- * "auto_attach" handlers but parts of it are initialized by
- * comedi_alloc_subdevices(), and other parts are initialized during
- * post-configuration on return from that handler.
- *
- * A low-level driver that sets @insn_bits for a digital input, digital output,
- * or DIO subdevice may leave @insn_read and @insn_write uninitialized, in
- * which case they will be set to a default handler during post-configuration
- * that uses @insn_bits to emulate the %INSN_READ and %INSN_WRITE instructions.
- */
-struct comedi_subdevice {
- struct comedi_device *device;
- int index;
- int type;
- int n_chan;
- int subdev_flags;
- int len_chanlist; /* maximum length of channel/gain list */
-
- void *private;
-
- struct comedi_async *async;
-
- void *lock;
- void *busy;
- unsigned int runflags;
- spinlock_t spin_lock; /* generic spin-lock for COMEDI and drivers */
-
- unsigned int io_bits;
-
- unsigned int maxdata; /* if maxdata==0, use list */
- const unsigned int *maxdata_list; /* list is channel specific */
-
- const struct comedi_lrange *range_table;
- const struct comedi_lrange *const *range_table_list;
-
- unsigned int *chanlist; /* driver-owned chanlist (not used) */
-
- int (*insn_read)(struct comedi_device *dev, struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data);
- int (*insn_write)(struct comedi_device *dev, struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data);
- int (*insn_bits)(struct comedi_device *dev, struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data);
- int (*insn_config)(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data);
-
- int (*do_cmd)(struct comedi_device *dev, struct comedi_subdevice *s);
- int (*do_cmdtest)(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_cmd *cmd);
- int (*poll)(struct comedi_device *dev, struct comedi_subdevice *s);
- int (*cancel)(struct comedi_device *dev, struct comedi_subdevice *s);
-
- /* called when the buffer changes */
- int (*buf_change)(struct comedi_device *dev,
- struct comedi_subdevice *s);
-
- void (*munge)(struct comedi_device *dev, struct comedi_subdevice *s,
- void *data, unsigned int num_bytes,
- unsigned int start_chan_index);
- enum dma_data_direction async_dma_dir;
-
- unsigned int state;
-
- struct device *class_dev;
- int minor;
-
- unsigned int *readback;
-};
-
-/**
- * struct comedi_buf_page - Describe a page of a COMEDI buffer
- * @virt_addr: Kernel address of page.
- * @dma_addr: DMA address of page if in DMA coherent memory.
- */
-struct comedi_buf_page {
- void *virt_addr;
- dma_addr_t dma_addr;
-};
-
-/**
- * struct comedi_buf_map - Describe pages in a COMEDI buffer
- * @dma_hw_dev: Low-level hardware &struct device pointer copied from the
- * COMEDI device's hw_dev member.
- * @page_list: Pointer to array of &struct comedi_buf_page, one for each
- * page in the buffer.
- * @n_pages: Number of pages in the buffer.
- * @dma_dir: DMA direction used to allocate pages of DMA coherent memory,
- * or %DMA_NONE if pages allocated from regular memory.
- * @refcount: &struct kref reference counter used to free the buffer.
- *
- * A COMEDI data buffer is allocated as individual pages, either in
- * conventional memory or DMA coherent memory, depending on the attached,
- * low-level hardware device. (The buffer pages also get mapped into the
- * kernel's contiguous virtual address space pointed to by the 'prealloc_buf'
- * member of &struct comedi_async.)
- *
- * The buffer is normally freed when the COMEDI device is detached from the
- * low-level driver (which may happen due to device removal), but if it happens
- * to be mmapped at the time, the pages cannot be freed until the buffer has
- * been munmapped. That is what the reference counter is for. (The virtual
- * address space pointed by 'prealloc_buf' is freed when the COMEDI device is
- * detached.)
- */
-struct comedi_buf_map {
- struct device *dma_hw_dev;
- struct comedi_buf_page *page_list;
- unsigned int n_pages;
- enum dma_data_direction dma_dir;
- struct kref refcount;
-};
-
-/**
- * struct comedi_async - Control data for asynchronous COMEDI commands
- * @prealloc_buf: Kernel virtual address of allocated acquisition buffer.
- * @prealloc_bufsz: Buffer size (in bytes).
- * @buf_map: Map of buffer pages.
- * @max_bufsize: Maximum allowed buffer size (in bytes).
- * @buf_write_count: "Write completed" count (in bytes, modulo 2**32).
- * @buf_write_alloc_count: "Allocated for writing" count (in bytes,
- * modulo 2**32).
- * @buf_read_count: "Read completed" count (in bytes, modulo 2**32).
- * @buf_read_alloc_count: "Allocated for reading" count (in bytes,
- * modulo 2**32).
- * @buf_write_ptr: Buffer position for writer.
- * @buf_read_ptr: Buffer position for reader.
- * @cur_chan: Current position in chanlist for scan (for those drivers that
- * use it).
- * @scans_done: The number of scans completed.
- * @scan_progress: Amount received or sent for current scan (in bytes).
- * @munge_chan: Current position in chanlist for "munging".
- * @munge_count: "Munge" count (in bytes, modulo 2**32).
- * @munge_ptr: Buffer position for "munging".
- * @events: Bit-vector of events that have occurred.
- * @cmd: Details of comedi command in progress.
- * @wait_head: Task wait queue for file reader or writer.
- * @cb_mask: Bit-vector of events that should wake waiting tasks.
- * @inttrig: Software trigger function for command, or NULL.
- *
- * Note about the ..._count and ..._ptr members:
- *
- * Think of the _Count values being integers of unlimited size, indexing
- * into a buffer of infinite length (though only an advancing portion
- * of the buffer of fixed length prealloc_bufsz is accessible at any
- * time). Then:
- *
- * Buf_Read_Count <= Buf_Read_Alloc_Count <= Munge_Count <=
- * Buf_Write_Count <= Buf_Write_Alloc_Count <=
- * (Buf_Read_Count + prealloc_bufsz)
- *
- * (Those aren't the actual members, apart from prealloc_bufsz.) When the
- * buffer is reset, those _Count values start at 0 and only increase in value,
- * maintaining the above inequalities until the next time the buffer is
- * reset. The buffer is divided into the following regions by the inequalities:
- *
- * [0, Buf_Read_Count):
- * old region no longer accessible
- *
- * [Buf_Read_Count, Buf_Read_Alloc_Count):
- * filled and munged region allocated for reading but not yet read
- *
- * [Buf_Read_Alloc_Count, Munge_Count):
- * filled and munged region not yet allocated for reading
- *
- * [Munge_Count, Buf_Write_Count):
- * filled region not yet munged
- *
- * [Buf_Write_Count, Buf_Write_Alloc_Count):
- * unfilled region allocated for writing but not yet written
- *
- * [Buf_Write_Alloc_Count, Buf_Read_Count + prealloc_bufsz):
- * unfilled region not yet allocated for writing
- *
- * [Buf_Read_Count + prealloc_bufsz, infinity):
- * unfilled region not yet accessible
- *
- * Data needs to be written into the buffer before it can be read out,
- * and may need to be converted (or "munged") between the two
- * operations. Extra unfilled buffer space may need to allocated for
- * writing (advancing Buf_Write_Alloc_Count) before new data is written.
- * After writing new data, the newly filled space needs to be released
- * (advancing Buf_Write_Count). This also results in the new data being
- * "munged" (advancing Munge_Count). Before data is read out of the
- * buffer, extra space may need to be allocated for reading (advancing
- * Buf_Read_Alloc_Count). After the data has been read out, the space
- * needs to be released (advancing Buf_Read_Count).
- *
- * The actual members, buf_read_count, buf_read_alloc_count,
- * munge_count, buf_write_count, and buf_write_alloc_count take the
- * value of the corresponding capitalized _Count values modulo 2^32
- * (UINT_MAX+1). Subtracting a "higher" _count value from a "lower"
- * _count value gives the same answer as subtracting a "higher" _Count
- * value from a lower _Count value because prealloc_bufsz < UINT_MAX+1.
- * The modulo operation is done implicitly.
- *
- * The buf_read_ptr, munge_ptr, and buf_write_ptr members take the value
- * of the corresponding capitalized _Count values modulo prealloc_bufsz.
- * These correspond to byte indices in the physical buffer. The modulo
- * operation is done by subtracting prealloc_bufsz when the value
- * exceeds prealloc_bufsz (assuming prealloc_bufsz plus the increment is
- * less than or equal to UINT_MAX).
- */
-struct comedi_async {
- void *prealloc_buf;
- unsigned int prealloc_bufsz;
- struct comedi_buf_map *buf_map;
- unsigned int max_bufsize;
- unsigned int buf_write_count;
- unsigned int buf_write_alloc_count;
- unsigned int buf_read_count;
- unsigned int buf_read_alloc_count;
- unsigned int buf_write_ptr;
- unsigned int buf_read_ptr;
- unsigned int cur_chan;
- unsigned int scans_done;
- unsigned int scan_progress;
- unsigned int munge_chan;
- unsigned int munge_count;
- unsigned int munge_ptr;
- unsigned int events;
- struct comedi_cmd cmd;
- wait_queue_head_t wait_head;
- unsigned int cb_mask;
- int (*inttrig)(struct comedi_device *dev, struct comedi_subdevice *s,
- unsigned int x);
-};
-
-/**
- * enum comedi_cb - &struct comedi_async callback "events"
- * @COMEDI_CB_EOS: end-of-scan
- * @COMEDI_CB_EOA: end-of-acquisition/output
- * @COMEDI_CB_BLOCK: data has arrived, wakes up read() / write()
- * @COMEDI_CB_EOBUF: DEPRECATED: end of buffer
- * @COMEDI_CB_ERROR: card error during acquisition
- * @COMEDI_CB_OVERFLOW: buffer overflow/underflow
- * @COMEDI_CB_ERROR_MASK: events that indicate an error has occurred
- * @COMEDI_CB_CANCEL_MASK: events that will cancel an async command
- */
-enum comedi_cb {
- COMEDI_CB_EOS = BIT(0),
- COMEDI_CB_EOA = BIT(1),
- COMEDI_CB_BLOCK = BIT(2),
- COMEDI_CB_EOBUF = BIT(3),
- COMEDI_CB_ERROR = BIT(4),
- COMEDI_CB_OVERFLOW = BIT(5),
- /* masks */
- COMEDI_CB_ERROR_MASK = (COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW),
- COMEDI_CB_CANCEL_MASK = (COMEDI_CB_EOA | COMEDI_CB_ERROR_MASK)
-};
-
-/**
- * struct comedi_driver - COMEDI driver registration
- * @driver_name: Name of driver.
- * @module: Owning module.
- * @attach: The optional "attach" handler for manually configured COMEDI
- * devices.
- * @detach: The "detach" handler for deconfiguring COMEDI devices.
- * @auto_attach: The optional "auto_attach" handler for automatically
- * configured COMEDI devices.
- * @num_names: Optional number of "board names" supported.
- * @board_name: Optional pointer to a pointer to a board name. The pointer
- * to a board name is embedded in an element of a driver-defined array
- * of static, read-only board type information.
- * @offset: Optional size of each element of the driver-defined array of
- * static, read-only board type information, i.e. the offset between each
- * pointer to a board name.
- *
- * This is used with comedi_driver_register() and comedi_driver_unregister() to
- * register and unregister a low-level COMEDI driver with the COMEDI core.
- *
- * If @num_names is non-zero, @board_name should be non-NULL, and @offset
- * should be at least sizeof(*board_name). These are used by the handler for
- * the %COMEDI_DEVCONFIG ioctl to match a hardware device and its driver by
- * board name. If @num_names is zero, the %COMEDI_DEVCONFIG ioctl matches a
- * hardware device and its driver by driver name. This is only useful if the
- * @attach handler is set. If @num_names is non-zero, the driver's @attach
- * handler will be called with the COMEDI device structure's board_ptr member
- * pointing to the matched pointer to a board name within the driver's private
- * array of static, read-only board type information.
- *
- * The @detach handler has two roles. If a COMEDI device was successfully
- * configured by the @attach or @auto_attach handler, it is called when the
- * device is being deconfigured (by the %COMEDI_DEVCONFIG ioctl, or due to
- * unloading of the driver, or due to device removal). It is also called when
- * the @attach or @auto_attach handler returns an error. Therefore, the
- * @attach or @auto_attach handlers can defer clean-up on error until the
- * @detach handler is called. If the @attach or @auto_attach handlers free
- * any resources themselves, they must prevent the @detach handler from
- * freeing the same resources. The @detach handler must not assume that all
- * resources requested by the @attach or @auto_attach handler were
- * successfully allocated.
- */
-struct comedi_driver {
- /* private: */
- struct comedi_driver *next; /* Next in list of COMEDI drivers. */
- /* public: */
- const char *driver_name;
- struct module *module;
- int (*attach)(struct comedi_device *dev, struct comedi_devconfig *it);
- void (*detach)(struct comedi_device *dev);
- int (*auto_attach)(struct comedi_device *dev, unsigned long context);
- unsigned int num_names;
- const char *const *board_name;
- int offset;
-};
-
-/**
- * struct comedi_device - Working data for a COMEDI device
- * @use_count: Number of open file objects.
- * @driver: Low-level COMEDI driver attached to this COMEDI device.
- * @pacer: Optional pointer to a dynamically allocated acquisition pacer
- * control. It is freed automatically after the COMEDI device is
- * detached from the low-level driver.
- * @private: Optional pointer to private data allocated by the low-level
- * driver. It is freed automatically after the COMEDI device is
- * detached from the low-level driver.
- * @class_dev: Sysfs comediX device.
- * @minor: Minor device number of COMEDI char device (0-47).
- * @detach_count: Counter incremented every time the COMEDI device is detached.
- * Used for checking a previous attachment is still valid.
- * @hw_dev: Optional pointer to the low-level hardware &struct device. It is
- * required for automatically configured COMEDI devices and optional for
- * COMEDI devices configured by the %COMEDI_DEVCONFIG ioctl, although
- * the bus-specific COMEDI functions only work if it is set correctly.
- * It is also passed to dma_alloc_coherent() for COMEDI subdevices that
- * have their 'async_dma_dir' member set to something other than
- * %DMA_NONE.
- * @board_name: Pointer to a COMEDI board name or a COMEDI driver name. When
- * the low-level driver's "attach" handler is called by the handler for
- * the %COMEDI_DEVCONFIG ioctl, it either points to a matched board name
- * string if the 'num_names' member of the &struct comedi_driver is
- * non-zero, otherwise it points to the low-level driver name string.
- * When the low-lever driver's "auto_attach" handler is called for an
- * automatically configured COMEDI device, it points to the low-level
- * driver name string. The low-level driver is free to change it in its
- * "attach" or "auto_attach" handler if it wishes.
- * @board_ptr: Optional pointer to private, read-only board type information in
- * the low-level driver. If the 'num_names' member of the &struct
- * comedi_driver is non-zero, the handler for the %COMEDI_DEVCONFIG ioctl
- * will point it to a pointer to a matched board name string within the
- * driver's private array of static, read-only board type information when
- * calling the driver's "attach" handler. The low-level driver is free to
- * change it.
- * @attached: Flag indicating that the COMEDI device is attached to a low-level
- * driver.
- * @ioenabled: Flag used to indicate that a PCI device has been enabled and
- * its regions requested.
- * @spinlock: Generic spin-lock for use by the low-level driver.
- * @mutex: Generic mutex for use by the COMEDI core module.
- * @attach_lock: &struct rw_semaphore used to guard against the COMEDI device
- * being detached while an operation is in progress. The down_write()
- * operation is only allowed while @mutex is held and is used when
- * changing @attached and @detach_count and calling the low-level driver's
- * "detach" handler. The down_read() operation is generally used without
- * holding @mutex.
- * @refcount: &struct kref reference counter for freeing COMEDI device.
- * @n_subdevices: Number of COMEDI subdevices allocated by the low-level
- * driver for this device.
- * @subdevices: Dynamically allocated array of COMEDI subdevices.
- * @mmio: Optional pointer to a remapped MMIO region set by the low-level
- * driver.
- * @iobase: Optional base of an I/O port region requested by the low-level
- * driver.
- * @iolen: Length of I/O port region requested at @iobase.
- * @irq: Optional IRQ number requested by the low-level driver.
- * @read_subdev: Optional pointer to a default COMEDI subdevice operated on by
- * the read() file operation. Set by the low-level driver.
- * @write_subdev: Optional pointer to a default COMEDI subdevice operated on by
- * the write() file operation. Set by the low-level driver.
- * @async_queue: Storage for fasync_helper().
- * @open: Optional pointer to a function set by the low-level driver to be
- * called when @use_count changes from 0 to 1.
- * @close: Optional pointer to a function set by the low-level driver to be
- * called when @use_count changed from 1 to 0.
- * @insn_device_config: Optional pointer to a handler for all sub-instructions
- * except %INSN_DEVICE_CONFIG_GET_ROUTES of the %INSN_DEVICE_CONFIG
- * instruction. If this is not initialized by the low-level driver, a
- * default handler will be set during post-configuration.
- * @get_valid_routes: Optional pointer to a handler for the
- * %INSN_DEVICE_CONFIG_GET_ROUTES sub-instruction of the
- * %INSN_DEVICE_CONFIG instruction set. If this is not initialized by the
- * low-level driver, a default handler that copies zero routes back to the
- * user will be used.
- *
- * This is the main control data structure for a COMEDI device (as far as the
- * COMEDI core is concerned). There are two groups of COMEDI devices -
- * "legacy" devices that are configured by the handler for the
- * %COMEDI_DEVCONFIG ioctl, and automatically configured devices resulting
- * from a call to comedi_auto_config() as a result of a bus driver probe in
- * a low-level COMEDI driver. The "legacy" COMEDI devices are allocated
- * during module initialization if the "comedi_num_legacy_minors" module
- * parameter is non-zero and use minor device numbers from 0 to
- * comedi_num_legacy_minors minus one. The automatically configured COMEDI
- * devices are allocated on demand and use minor device numbers from
- * comedi_num_legacy_minors to 47.
- */
-struct comedi_device {
- int use_count;
- struct comedi_driver *driver;
- struct comedi_8254 *pacer;
- void *private;
-
- struct device *class_dev;
- int minor;
- unsigned int detach_count;
- struct device *hw_dev;
-
- const char *board_name;
- const void *board_ptr;
- unsigned int attached:1;
- unsigned int ioenabled:1;
- spinlock_t spinlock; /* generic spin-lock for low-level driver */
- struct mutex mutex; /* generic mutex for COMEDI core */
- struct rw_semaphore attach_lock;
- struct kref refcount;
-
- int n_subdevices;
- struct comedi_subdevice *subdevices;
-
- /* dumb */
- void __iomem *mmio;
- unsigned long iobase;
- unsigned long iolen;
- unsigned int irq;
-
- struct comedi_subdevice *read_subdev;
- struct comedi_subdevice *write_subdev;
-
- struct fasync_struct *async_queue;
-
- int (*open)(struct comedi_device *dev);
- void (*close)(struct comedi_device *dev);
- int (*insn_device_config)(struct comedi_device *dev,
- struct comedi_insn *insn, unsigned int *data);
- unsigned int (*get_valid_routes)(struct comedi_device *dev,
- unsigned int n_pairs,
- unsigned int *pair_data);
-};
-
-/*
- * function prototypes
- */
-
-void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);
-
-struct comedi_device *comedi_dev_get_from_minor(unsigned int minor);
-int comedi_dev_put(struct comedi_device *dev);
-
-bool comedi_is_subdevice_running(struct comedi_subdevice *s);
-
-void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size);
-void comedi_set_spriv_auto_free(struct comedi_subdevice *s);
-
-int comedi_check_chanlist(struct comedi_subdevice *s,
- int n,
- unsigned int *chanlist);
-
-/* range stuff */
-
-#define RANGE(a, b) {(a) * 1e6, (b) * 1e6, 0}
-#define RANGE_ext(a, b) {(a) * 1e6, (b) * 1e6, RF_EXTERNAL}
-#define RANGE_mA(a, b) {(a) * 1e6, (b) * 1e6, UNIT_mA}
-#define RANGE_unitless(a, b) {(a) * 1e6, (b) * 1e6, 0}
-#define BIP_RANGE(a) {-(a) * 1e6, (a) * 1e6, 0}
-#define UNI_RANGE(a) {0, (a) * 1e6, 0}
-
-extern const struct comedi_lrange range_bipolar10;
-extern const struct comedi_lrange range_bipolar5;
-extern const struct comedi_lrange range_bipolar2_5;
-extern const struct comedi_lrange range_unipolar10;
-extern const struct comedi_lrange range_unipolar5;
-extern const struct comedi_lrange range_unipolar2_5;
-extern const struct comedi_lrange range_0_20mA;
-extern const struct comedi_lrange range_4_20mA;
-extern const struct comedi_lrange range_0_32mA;
-extern const struct comedi_lrange range_unknown;
-
-#define range_digital range_unipolar5
-
-/**
- * struct comedi_lrange - Describes a COMEDI range table
- * @length: Number of entries in the range table.
- * @range: Array of &struct comedi_krange, one for each range.
- *
- * Each element of @range[] describes the minimum and maximum physical range
- * and the type of units. Typically, the type of unit is %UNIT_volt
- * (i.e. volts) and the minimum and maximum are in millionths of a volt.
- * There may also be a flag that indicates the minimum and maximum are merely
- * scale factors for an unknown, external reference.
- */
-struct comedi_lrange {
- int length;
- struct comedi_krange range[];
-};
-
-/**
- * comedi_range_is_bipolar() - Test if subdevice range is bipolar
- * @s: COMEDI subdevice.
- * @range: Index of range within a range table.
- *
- * Tests whether a range is bipolar by checking whether its minimum value
- * is negative.
- *
- * Assumes @range is valid. Does not work for subdevices using a
- * channel-specific range table list.
- *
- * Return:
- * %true if the range is bipolar.
- * %false if the range is unipolar.
- */
-static inline bool comedi_range_is_bipolar(struct comedi_subdevice *s,
- unsigned int range)
-{
- return s->range_table->range[range].min < 0;
-}
-
-/**
- * comedi_range_is_unipolar() - Test if subdevice range is unipolar
- * @s: COMEDI subdevice.
- * @range: Index of range within a range table.
- *
- * Tests whether a range is unipolar by checking whether its minimum value
- * is at least 0.
- *
- * Assumes @range is valid. Does not work for subdevices using a
- * channel-specific range table list.
- *
- * Return:
- * %true if the range is unipolar.
- * %false if the range is bipolar.
- */
-static inline bool comedi_range_is_unipolar(struct comedi_subdevice *s,
- unsigned int range)
-{
- return s->range_table->range[range].min >= 0;
-}
-
-/**
- * comedi_range_is_external() - Test if subdevice range is external
- * @s: COMEDI subdevice.
- * @range: Index of range within a range table.
- *
- * Tests whether a range is externally reference by checking whether its
- * %RF_EXTERNAL flag is set.
- *
- * Assumes @range is valid. Does not work for subdevices using a
- * channel-specific range table list.
- *
- * Return:
- * %true if the range is external.
- * %false if the range is internal.
- */
-static inline bool comedi_range_is_external(struct comedi_subdevice *s,
- unsigned int range)
-{
- return !!(s->range_table->range[range].flags & RF_EXTERNAL);
-}
-
-/**
- * comedi_chan_range_is_bipolar() - Test if channel-specific range is bipolar
- * @s: COMEDI subdevice.
- * @chan: The channel number.
- * @range: Index of range within a range table.
- *
- * Tests whether a range is bipolar by checking whether its minimum value
- * is negative.
- *
- * Assumes @chan and @range are valid. Only works for subdevices with a
- * channel-specific range table list.
- *
- * Return:
- * %true if the range is bipolar.
- * %false if the range is unipolar.
- */
-static inline bool comedi_chan_range_is_bipolar(struct comedi_subdevice *s,
- unsigned int chan,
- unsigned int range)
-{
- return s->range_table_list[chan]->range[range].min < 0;
-}
-
-/**
- * comedi_chan_range_is_unipolar() - Test if channel-specific range is unipolar
- * @s: COMEDI subdevice.
- * @chan: The channel number.
- * @range: Index of range within a range table.
- *
- * Tests whether a range is unipolar by checking whether its minimum value
- * is at least 0.
- *
- * Assumes @chan and @range are valid. Only works for subdevices with a
- * channel-specific range table list.
- *
- * Return:
- * %true if the range is unipolar.
- * %false if the range is bipolar.
- */
-static inline bool comedi_chan_range_is_unipolar(struct comedi_subdevice *s,
- unsigned int chan,
- unsigned int range)
-{
- return s->range_table_list[chan]->range[range].min >= 0;
-}
-
-/**
- * comedi_chan_range_is_external() - Test if channel-specific range is external
- * @s: COMEDI subdevice.
- * @chan: The channel number.
- * @range: Index of range within a range table.
- *
- * Tests whether a range is externally reference by checking whether its
- * %RF_EXTERNAL flag is set.
- *
- * Assumes @chan and @range are valid. Only works for subdevices with a
- * channel-specific range table list.
- *
- * Return:
- * %true if the range is bipolar.
- * %false if the range is unipolar.
- */
-static inline bool comedi_chan_range_is_external(struct comedi_subdevice *s,
- unsigned int chan,
- unsigned int range)
-{
- return !!(s->range_table_list[chan]->range[range].flags & RF_EXTERNAL);
-}
-
-/**
- * comedi_offset_munge() - Convert between offset binary and 2's complement
- * @s: COMEDI subdevice.
- * @val: Value to be converted.
- *
- * Toggles the highest bit of a sample value to toggle between offset binary
- * and 2's complement. Assumes that @s->maxdata is a power of 2 minus 1.
- *
- * Return: The converted value.
- */
-static inline unsigned int comedi_offset_munge(struct comedi_subdevice *s,
- unsigned int val)
-{
- return val ^ s->maxdata ^ (s->maxdata >> 1);
-}
-
-/**
- * comedi_bytes_per_sample() - Determine subdevice sample size
- * @s: COMEDI subdevice.
- *
- * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
- * whether the %SDF_LSAMPL subdevice flag is set or not.
- *
- * Return: The subdevice sample size.
- */
-static inline unsigned int comedi_bytes_per_sample(struct comedi_subdevice *s)
-{
- return s->subdev_flags & SDF_LSAMPL ? sizeof(int) : sizeof(short);
-}
-
-/**
- * comedi_sample_shift() - Determine log2 of subdevice sample size
- * @s: COMEDI subdevice.
- *
- * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
- * whether the %SDF_LSAMPL subdevice flag is set or not. The log2 of the
- * sample size will be 2 or 1 and can be used as the right operand of a
- * bit-shift operator to multiply or divide something by the sample size.
- *
- * Return: log2 of the subdevice sample size.
- */
-static inline unsigned int comedi_sample_shift(struct comedi_subdevice *s)
-{
- return s->subdev_flags & SDF_LSAMPL ? 2 : 1;
-}
-
-/**
- * comedi_bytes_to_samples() - Convert a number of bytes to a number of samples
- * @s: COMEDI subdevice.
- * @nbytes: Number of bytes
- *
- * Return: The number of bytes divided by the subdevice sample size.
- */
-static inline unsigned int comedi_bytes_to_samples(struct comedi_subdevice *s,
- unsigned int nbytes)
-{
- return nbytes >> comedi_sample_shift(s);
-}
-
-/**
- * comedi_samples_to_bytes() - Convert a number of samples to a number of bytes
- * @s: COMEDI subdevice.
- * @nsamples: Number of samples.
- *
- * Return: The number of samples multiplied by the subdevice sample size.
- * (Does not check for arithmetic overflow.)
- */
-static inline unsigned int comedi_samples_to_bytes(struct comedi_subdevice *s,
- unsigned int nsamples)
-{
- return nsamples << comedi_sample_shift(s);
-}
-
-/**
- * comedi_check_trigger_src() - Trivially validate a comedi_cmd trigger source
- * @src: Pointer to the trigger source to validate.
- * @flags: Bitmask of valid %TRIG_* for the trigger.
- *
- * This is used in "step 1" of the do_cmdtest functions of comedi drivers
- * to validate the comedi_cmd triggers. The mask of the @src against the
- * @flags allows the userspace comedilib to pass all the comedi_cmd
- * triggers as %TRIG_ANY and get back a bitmask of the valid trigger sources.
- *
- * Return:
- * 0 if trigger sources in *@src are all supported.
- * -EINVAL if any trigger source in *@src is unsupported.
- */
-static inline int comedi_check_trigger_src(unsigned int *src,
- unsigned int flags)
-{
- unsigned int orig_src = *src;
-
- *src = orig_src & flags;
- if (*src == TRIG_INVALID || *src != orig_src)
- return -EINVAL;
- return 0;
-}
-
-/**
- * comedi_check_trigger_is_unique() - Make sure a trigger source is unique
- * @src: The trigger source to check.
- *
- * Return:
- * 0 if no more than one trigger source is set.
- * -EINVAL if more than one trigger source is set.
- */
-static inline int comedi_check_trigger_is_unique(unsigned int src)
-{
- /* this test is true if more than one _src bit is set */
- if ((src & (src - 1)) != 0)
- return -EINVAL;
- return 0;
-}
-
-/**
- * comedi_check_trigger_arg_is() - Trivially validate a trigger argument
- * @arg: Pointer to the trigger arg to validate.
- * @val: The value the argument should be.
- *
- * Forces *@arg to be @val.
- *
- * Return:
- * 0 if *@arg was already @val.
- * -EINVAL if *@arg differed from @val.
- */
-static inline int comedi_check_trigger_arg_is(unsigned int *arg,
- unsigned int val)
-{
- if (*arg != val) {
- *arg = val;
- return -EINVAL;
- }
- return 0;
-}
-
-/**
- * comedi_check_trigger_arg_min() - Trivially validate a trigger argument min
- * @arg: Pointer to the trigger arg to validate.
- * @val: The minimum value the argument should be.
- *
- * Forces *@arg to be at least @val, setting it to @val if necessary.
- *
- * Return:
- * 0 if *@arg was already at least @val.
- * -EINVAL if *@arg was less than @val.
- */
-static inline int comedi_check_trigger_arg_min(unsigned int *arg,
- unsigned int val)
-{
- if (*arg < val) {
- *arg = val;
- return -EINVAL;
- }
- return 0;
-}
-
-/**
- * comedi_check_trigger_arg_max() - Trivially validate a trigger argument max
- * @arg: Pointer to the trigger arg to validate.
- * @val: The maximum value the argument should be.
- *
- * Forces *@arg to be no more than @val, setting it to @val if necessary.
- *
- * Return:
- * 0 if*@arg was already no more than @val.
- * -EINVAL if *@arg was greater than @val.
- */
-static inline int comedi_check_trigger_arg_max(unsigned int *arg,
- unsigned int val)
-{
- if (*arg > val) {
- *arg = val;
- return -EINVAL;
- }
- return 0;
-}
-
-/*
- * Must set dev->hw_dev if you wish to dma directly into comedi's buffer.
- * Also useful for retrieving a previously configured hardware device of
- * known bus type. Set automatically for auto-configured devices.
- * Automatically set to NULL when detaching hardware device.
- */
-int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev);
-
-/**
- * comedi_buf_n_bytes_ready - Determine amount of unread data in buffer
- * @s: COMEDI subdevice.
- *
- * Determines the number of bytes of unread data in the asynchronous
- * acquisition data buffer for a subdevice. The data in question might not
- * have been fully "munged" yet.
- *
- * Returns: The amount of unread data in bytes.
- */
-static inline unsigned int comedi_buf_n_bytes_ready(struct comedi_subdevice *s)
-{
- return s->async->buf_write_count - s->async->buf_read_count;
-}
-
-unsigned int comedi_buf_write_alloc(struct comedi_subdevice *s, unsigned int n);
-unsigned int comedi_buf_write_free(struct comedi_subdevice *s, unsigned int n);
-
-unsigned int comedi_buf_read_n_available(struct comedi_subdevice *s);
-unsigned int comedi_buf_read_alloc(struct comedi_subdevice *s, unsigned int n);
-unsigned int comedi_buf_read_free(struct comedi_subdevice *s, unsigned int n);
-
-unsigned int comedi_buf_write_samples(struct comedi_subdevice *s,
- const void *data, unsigned int nsamples);
-unsigned int comedi_buf_read_samples(struct comedi_subdevice *s,
- void *data, unsigned int nsamples);
-
-/* drivers.c - general comedi driver functions */
-
-#define COMEDI_TIMEOUT_MS 1000
-
-int comedi_timeout(struct comedi_device *dev, struct comedi_subdevice *s,
- struct comedi_insn *insn,
- int (*cb)(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned long context),
- unsigned long context);
-
-unsigned int comedi_handle_events(struct comedi_device *dev,
- struct comedi_subdevice *s);
-
-int comedi_dio_insn_config(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data,
- unsigned int mask);
-unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
- unsigned int *data);
-unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
- struct comedi_cmd *cmd);
-unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s);
-unsigned int comedi_nscans_left(struct comedi_subdevice *s,
- unsigned int nscans);
-unsigned int comedi_nsamples_left(struct comedi_subdevice *s,
- unsigned int nsamples);
-void comedi_inc_scan_progress(struct comedi_subdevice *s,
- unsigned int num_bytes);
-
-void *comedi_alloc_devpriv(struct comedi_device *dev, size_t size);
-int comedi_alloc_subdevices(struct comedi_device *dev, int num_subdevices);
-int comedi_alloc_subdev_readback(struct comedi_subdevice *s);
-
-int comedi_readback_insn_read(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data);
-
-int comedi_load_firmware(struct comedi_device *dev, struct device *hw_dev,
- const char *name,
- int (*cb)(struct comedi_device *dev,
- const u8 *data, size_t size,
- unsigned long context),
- unsigned long context);
-
-int __comedi_request_region(struct comedi_device *dev,
- unsigned long start, unsigned long len);
-int comedi_request_region(struct comedi_device *dev,
- unsigned long start, unsigned long len);
-void comedi_legacy_detach(struct comedi_device *dev);
-
-int comedi_auto_config(struct device *hardware_device,
- struct comedi_driver *driver, unsigned long context);
-void comedi_auto_unconfig(struct device *hardware_device);
-
-int comedi_driver_register(struct comedi_driver *driver);
-void comedi_driver_unregister(struct comedi_driver *driver);
-
-/**
- * module_comedi_driver() - Helper macro for registering a comedi driver
- * @__comedi_driver: comedi_driver struct
- *
- * Helper macro for comedi drivers which do not do anything special in module
- * init/exit. This eliminates a lot of boilerplate. Each module may only use
- * this macro once, and calling it replaces module_init() and module_exit().
- */
-#define module_comedi_driver(__comedi_driver) \
- module_driver(__comedi_driver, comedi_driver_register, \
- comedi_driver_unregister)
-
-#endif /* _COMEDIDEV_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * comedilib.h
- * Header file for kcomedilib
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
- */
-
-#ifndef _LINUX_COMEDILIB_H
-#define _LINUX_COMEDILIB_H
-
-struct comedi_device *comedi_open(const char *path);
-int comedi_close(struct comedi_device *dev);
-int comedi_dio_get_config(struct comedi_device *dev, unsigned int subdev,
- unsigned int chan, unsigned int *io);
-int comedi_dio_config(struct comedi_device *dev, unsigned int subdev,
- unsigned int chan, unsigned int io);
-int comedi_dio_bitfield2(struct comedi_device *dev, unsigned int subdev,
- unsigned int mask, unsigned int *bits,
- unsigned int base_channel);
-int comedi_find_subdevice_by_type(struct comedi_device *dev, int type,
- unsigned int subd);
-int comedi_get_n_channels(struct comedi_device *dev, unsigned int subdevice);
-
-#endif
#include <linux/dma-direction.h>
#include <linux/interrupt.h>
#include <linux/firmware.h>
-
-#include "comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_internal.h"
struct comedi_driver *comedi_drivers;
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "8255.h"
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "amcc_s5933.h"
/*
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "amcc_s5933.h"
#include "z8536.h"
*/
#include <linux/module.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "addi_watchdog.h"
/*
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "addi_tcw.h"
#include "addi_watchdog.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* Register I/O map
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "addi_watchdog.h"
/*
*/
#include <linux/module.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "addi_watchdog.h"
/*
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "amcc_s5933.h"
/*
*/
#include <linux/module.h>
+#include <linux/comedi/comedi_pci.h>
-#include "../comedi_pci.h"
#include "amcc_s5933.h"
/*
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#define CONV_UNIT_NS BIT(0)
#define CONV_UNIT_US BIT(1)
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "addi_tcw.h"
#include "addi_watchdog.h"
#include <linux/module.h>
#include <linux/delay.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI-6208/6216-GL register map
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "plx9052.h"
#include <linux/kernel.h>
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#define PCI8164_AXIS(x) ((x) * 0x08)
#define PCI8164_CMD_MSTS_REG 0x00
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "plx9052.h"
#include "comedi_8254.h"
#include <linux/gfp.h>
#include <linux/interrupt.h>
#include <linux/io.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "amcc_s5933.h"
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/delay.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/* address scheme (page 2.17 of the manual) */
#define ADQ12B_CTREG 0x00
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "comedi_8254.h"
#include "amcc_s5933.h"
#include <linux/module.h>
#include <linux/delay.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI BAR2 Register map (dev->iobase)
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI Bar 2 I/O Register map (dev->iobase)
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI bar 2 Register I/O map (dev->iobase)
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI-1760 Register Map
#include <linux/module.h>
#include <linux/delay.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "8255.h"
#include "comedi_8254.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_8254.h"
#include "8255.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#define AIO_IIRO_16_RELAY_0_7 0x00
#define AIO_IIRO_16_INPUT_0_7 0x01
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "amplc_dio200.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "amplc_dio200.h"
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "amplc_dio200.h"
*/
#include <linux/module.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "amplc_pc236.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "amplc_pc236.h"
#include "8255.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/* PC263 registers */
#define PC263_DO_0_7_REG 0x00
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "comedi_8254.h"
#include "8255.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "amplc_pc236.h"
#include "plx9052.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/* PCI263 registers */
#define PCI263_DO_0_7_REG 0x00
#include <linux/timer.h>
#include <linux/io.h>
#include <linux/pnp.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register I/O map
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
-
-#include "../comedi_pcmcia.h"
+#include <linux/comedi/comedi_pcmcia.h>
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "comedi_8254.h"
#include "8255.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "8255.h"
#include "plx9080.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "8255.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "comedi_8254.h"
#include "plx9052.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "8255.h"
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/io.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_8254.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
-#include "../comedi.h"
-#include "../comedilib.h"
-#include "../comedidev.h"
+#include <linux/comedi.h>
+#include <linux/comedi/comedilib.h>
+#include <linux/comedi/comedidev.h>
struct bonded_device {
struct comedi_device *dev;
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <asm/dma.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register map
*/
#include <linux/module.h>
-#include "../comedidev.h"
-
+#include <linux/comedi/comedidev.h>
#include <asm/div64.h>
-
#include <linux/timer.h>
#include <linux/ktime.h>
#include <linux/jiffies.h>
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* Register map
*/
#include <linux/module.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* The output range is selected by jumpering pins on the I/O connector.
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "8255.h"
#include "plx9080.h"
*/
#include <linux/module.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
#include "comedi_8254.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pcmcia.h"
+#include <linux/comedi/comedi_pcmcia.h>
#include "das08.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "das08.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "das08.h"
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
#include "comedi_8254.h"
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/io.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include <linux/delay.h>
#define DT2801_TIMEOUT 1000
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register I/O map
#include <linux/module.h>
#include <linux/interrupt.h>
-#include "../comedidev.h"
-
+#include <linux/comedi/comedidev.h>
#include <linux/delay.h>
#define DT2814_CSR 0
*/
#include <linux/module.h>
-#include "../comedidev.h"
-
+#include <linux/comedi/comedidev.h>
#include <linux/delay.h>
#define DT2815_DATA 0
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#define DT2817_CR 0
#define DT2817_DATA 1
#include <linux/gfp.h>
#include <linux/interrupt.h>
#include <linux/io.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI BAR0 - dual-ported RAM location definitions (dev->mmio)
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
-
-#include "../comedi_usb.h"
+#include <linux/comedi/comedi_usb.h>
#define DT9812_DIAGS_BOARD_INFO_ADDR 0xFBFF
#define DT9812_MAX_WRITE_CMD_PIPE_SIZE 32
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/mutex.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#define READ_TIMEOUT 50
*/
#include <linux/module.h>
-#include "../comedidev.h"
-
+#include <linux/comedi/comedidev.h>
#include <linux/delay.h>
/*
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "plx9080.h"
#include <linux/module.h>
#include <linux/delay.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#define ICP_MULTI_ADC_CSR 0x00 /* R/W: ADC command/status register */
#define ICP_MULTI_ADC_CSR_ST BIT(0) /* Start ADC */
#include <linux/module.h>
#include <linux/io.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register I/O map
#include <linux/jiffies.h>
#include <linux/slab.h>
#include <linux/timer.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "jr3_pci.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI BAR 0 Register I/O map
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "comedi_8254.h"
#include "plx9052.h"
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "plx9052.h"
#include <linux/module.h>
#include <linux/delay.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/* Registers present in BAR0 memory region */
#define MF624_GPIOC_REG 0x54
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/log2.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "mite.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
-
+#include <linux/comedi/comedidev.h>
#include <linux/delay.h>
/* Offsets of different ports */
*/
#include <linux/module.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register map
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI BAR1 - Register memory map
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
/*
* PCI BAR1 Register Map
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "mite.h"
#include "ni_tio.h"
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#define AO_VALUE_OFFSET 0x00
#define AO_CHAN_OFFSET 0x0c
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/io.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include "comedi_8254.h"
*/
#include <linux/module.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_8254.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-#include "../comedidev.h"
-
+#include <linux/comedi/comedidev.h>
#include <linux/isapnp.h>
#include "ni_stc.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pcmcia.h"
+#include <linux/comedi/comedi_pcmcia.h>
/* daqcard700 registers */
#define DIO_W 0x04 /* WO 8bit */
*/
#include <linux/module.h>
-#include "../comedi_pcmcia.h"
+#include <linux/comedi/comedi_pcmcia.h>
#include "8255.h"
*/
#include <linux/module.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "ni_labpc.h"
#include "ni_labpc_isadma.h"
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/slab.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_8254.h"
#include "8255.h"
*/
#include <linux/module.h>
-
-#include "../comedi_pcmcia.h"
+#include <linux/comedi/comedi_pcmcia.h>
#include "ni_labpc.h"
#include <linux/module.h>
#include <linux/slab.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include "ni_labpc.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "ni_labpc.h"
#include <linux/module.h>
#include <linux/delay.h>
+#include <linux/comedi/comedi_pcmcia.h>
-#include "../comedi_pcmcia.h"
#include "ni_stc.h"
#include "8255.h"
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "mite.h"
#include <linux/module.h>
#include <linux/delay.h>
-
-#include "../comedi_pci.h"
-
+#include <linux/comedi/comedi_pci.h>
#include <asm/byteorder.h>
#include "ni_stc.h"
#include <linux/slab.h>
#include <linux/bsearch.h>
#include <linux/sort.h>
-
-#include "../comedi.h"
+#include <linux/comedi.h>
#include "ni_routes.h"
#include "ni_routing/ni_route_values.h"
#include <linux/bitops.h>
#endif
-#include "../comedi.h"
+#include <linux/comedi.h>
/**
* struct ni_route_set - Set of destinations with a common source.
#ifndef _COMEDI_DRIVERS_NI_ROUTINT_NI_ROUTE_VALUES_H
#define _COMEDI_DRIVERS_NI_ROUTINT_NI_ROUTE_VALUES_H
-#include "../../comedi.h"
+#include <linux/comedi.h>
#include <linux/types.h>
/*
#ifndef _COMEDI_NI_TIO_H
#define _COMEDI_NI_TIO_H
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
enum ni_gpct_register {
NITIO_G0_AUTO_INC,
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
-
-#include "../comedi_usb.h"
+#include <linux/comedi/comedi_usb.h>
#define NI6501_TIMEOUT 1000
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_8254.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#define PCL726_AO_MSB_REG(x) (0x00 + ((x) * 2))
#define PCL726_AO_LSB_REG(x) (0x01 + ((x) * 2))
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register map
#include <linux/gfp.h>
#include <linux/delay.h>
#include <linux/io.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include "comedi_8254.h"
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include "comedi_8254.h"
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_isadma.h"
#include "comedi_8254.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "8255.h"
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
#define PCMAD_STATUS 0
#define PCMAD_LSB 1
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/* AI range is not configurable, it's set by jumpers on the board */
static const struct comedi_lrange pcmda12_ranges = {
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register I/O map
#include <linux/module.h>
#include <linux/interrupt.h>
-
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register I/O map
*/
#include <linux/module.h>
-
-#include "../comedi_pcmcia.h"
+#include <linux/comedi/comedi_pcmcia.h>
/*
* Register I/O map
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "comedi_8254.h"
#include "plx9080.h"
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register map
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register I/O map
*/
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/*
* Register I/O map
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/types.h>
-
-#include "../comedi_pci.h"
+#include <linux/comedi/comedi_pci.h>
#include "s626.h"
/* include files ----------------------------------------------------------- */
#include <linux/module.h>
-#include "../comedidev.h"
+#include <linux/comedi/comedidev.h>
/* Some global definitions: the registers of the DNP ----------------------- */
/* */
#include <linux/input.h>
#include <linux/fcntl.h>
#include <linux/compiler.h>
-
-#include "../comedi_usb.h"
+#include <linux/comedi/comedi_usb.h>
/* constants for firmware upload and download */
#define USBDUX_FIRMWARE "usbdux_firmware.bin"
#include <linux/input.h>
#include <linux/fcntl.h>
#include <linux/compiler.h>
-#include "../comedi_usb.h"
+#include <linux/comedi/comedi_usb.h>
/*
* timeout for the USB-transfer
#include <linux/fcntl.h>
#include <linux/compiler.h>
#include <asm/unaligned.h>
-
-#include "../comedi_usb.h"
+#include <linux/comedi/comedi_usb.h>
/* timeout for the USB-transfer in ms*/
#define BULK_TIMEOUT 1000
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/uaccess.h>
-
-#include "../comedi_usb.h"
+#include <linux/comedi/comedi_usb.h>
enum {
DEVICE_VMK8055,
#include <linux/mm.h>
#include <linux/io.h>
-#include "../comedi.h"
-#include "../comedilib.h"
-#include "../comedidev.h"
+#include <linux/comedi.h>
+#include <linux/comedi/comedidev.h>
+#include <linux/comedi/comedilib.h>
MODULE_AUTHOR("David Schleef <ds@schleef.org>");
MODULE_DESCRIPTION("Comedi kernel library");
* was cool.
*/
-#include "comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_internal.h"
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
*/
#include <linux/uaccess.h>
-#include "comedidev.h"
+#include <linux/comedi/comedidev.h>
#include "comedi_internal.h"
const struct comedi_lrange range_bipolar10 = { 1, {BIP_RANGE(10)} };
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_pci.h
+ * header file for Comedi PCI drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_PCI_H
+#define _COMEDI_PCI_H
+
+#include <linux/pci.h>
+#include <linux/comedi/comedidev.h>
+
+/*
+ * PCI Vendor IDs not in <linux/pci_ids.h>
+ */
+#define PCI_VENDOR_ID_KOLTER 0x1001
+#define PCI_VENDOR_ID_ICP 0x104c
+#define PCI_VENDOR_ID_DT 0x1116
+#define PCI_VENDOR_ID_IOTECH 0x1616
+#define PCI_VENDOR_ID_CONTEC 0x1221
+#define PCI_VENDOR_ID_RTD 0x1435
+#define PCI_VENDOR_ID_HUMUSOFT 0x186c
+
+struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev);
+
+int comedi_pci_enable(struct comedi_device *dev);
+void comedi_pci_disable(struct comedi_device *dev);
+void comedi_pci_detach(struct comedi_device *dev);
+
+int comedi_pci_auto_config(struct pci_dev *pcidev, struct comedi_driver *driver,
+ unsigned long context);
+void comedi_pci_auto_unconfig(struct pci_dev *pcidev);
+
+int comedi_pci_driver_register(struct comedi_driver *comedi_driver,
+ struct pci_driver *pci_driver);
+void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
+ struct pci_driver *pci_driver);
+
+/**
+ * module_comedi_pci_driver() - Helper macro for registering a comedi PCI driver
+ * @__comedi_driver: comedi_driver struct
+ * @__pci_driver: pci_driver struct
+ *
+ * Helper macro for comedi PCI drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_pci_driver(__comedi_driver, __pci_driver) \
+ module_driver(__comedi_driver, comedi_pci_driver_register, \
+ comedi_pci_driver_unregister, &(__pci_driver))
+
+#endif /* _COMEDI_PCI_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_pcmcia.h
+ * header file for Comedi PCMCIA drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_PCMCIA_H
+#define _COMEDI_PCMCIA_H
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <linux/comedi/comedidev.h>
+
+struct pcmcia_device *comedi_to_pcmcia_dev(struct comedi_device *dev);
+
+int comedi_pcmcia_enable(struct comedi_device *dev,
+ int (*conf_check)(struct pcmcia_device *p_dev,
+ void *priv_data));
+void comedi_pcmcia_disable(struct comedi_device *dev);
+
+int comedi_pcmcia_auto_config(struct pcmcia_device *link,
+ struct comedi_driver *driver);
+void comedi_pcmcia_auto_unconfig(struct pcmcia_device *link);
+
+int comedi_pcmcia_driver_register(struct comedi_driver *comedi_driver,
+ struct pcmcia_driver *pcmcia_driver);
+void comedi_pcmcia_driver_unregister(struct comedi_driver *comedi_driver,
+ struct pcmcia_driver *pcmcia_driver);
+
+/**
+ * module_comedi_pcmcia_driver() - Helper macro for registering a comedi
+ * PCMCIA driver
+ * @__comedi_driver: comedi_driver struct
+ * @__pcmcia_driver: pcmcia_driver struct
+ *
+ * Helper macro for comedi PCMCIA drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_pcmcia_driver(__comedi_driver, __pcmcia_driver) \
+ module_driver(__comedi_driver, comedi_pcmcia_driver_register, \
+ comedi_pcmcia_driver_unregister, &(__pcmcia_driver))
+
+#endif /* _COMEDI_PCMCIA_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* comedi_usb.h
+ * header file for USB Comedi drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_USB_H
+#define _COMEDI_USB_H
+
+#include <linux/usb.h>
+#include <linux/comedi/comedidev.h>
+
+struct usb_interface *comedi_to_usb_interface(struct comedi_device *dev);
+struct usb_device *comedi_to_usb_dev(struct comedi_device *dev);
+
+int comedi_usb_auto_config(struct usb_interface *intf,
+ struct comedi_driver *driver, unsigned long context);
+void comedi_usb_auto_unconfig(struct usb_interface *intf);
+
+int comedi_usb_driver_register(struct comedi_driver *comedi_driver,
+ struct usb_driver *usb_driver);
+void comedi_usb_driver_unregister(struct comedi_driver *comedi_driver,
+ struct usb_driver *usb_driver);
+
+/**
+ * module_comedi_usb_driver() - Helper macro for registering a comedi USB driver
+ * @__comedi_driver: comedi_driver struct
+ * @__usb_driver: usb_driver struct
+ *
+ * Helper macro for comedi USB drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_usb_driver(__comedi_driver, __usb_driver) \
+ module_driver(__comedi_driver, comedi_usb_driver_register, \
+ comedi_usb_driver_unregister, &(__usb_driver))
+
+#endif /* _COMEDI_USB_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedidev.h
+ * header file for kernel-only structures, variables, and constants
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDIDEV_H
+#define _COMEDIDEV_H
+
+#include <linux/dma-mapping.h>
+#include <linux/mutex.h>
+#include <linux/spinlock_types.h>
+#include <linux/rwsem.h>
+#include <linux/kref.h>
+#include <linux/comedi.h>
+
+#define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
+#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \
+ COMEDI_MINORVERSION, COMEDI_MICROVERSION)
+#define COMEDI_RELEASE VERSION
+
+#define COMEDI_NUM_BOARD_MINORS 0x30
+
+/**
+ * struct comedi_subdevice - Working data for a COMEDI subdevice
+ * @device: COMEDI device to which this subdevice belongs. (Initialized by
+ * comedi_alloc_subdevices().)
+ * @index: Index of this subdevice within device's array of subdevices.
+ * (Initialized by comedi_alloc_subdevices().)
+ * @type: Type of subdevice from &enum comedi_subdevice_type. (Initialized by
+ * the low-level driver.)
+ * @n_chan: Number of channels the subdevice supports. (Initialized by the
+ * low-level driver.)
+ * @subdev_flags: Various "SDF" flags indicating aspects of the subdevice to
+ * the COMEDI core and user application. (Initialized by the low-level
+ * driver.)
+ * @len_chanlist: Maximum length of a channel list if the subdevice supports
+ * asynchronous acquisition commands. (Optionally initialized by the
+ * low-level driver, or changed from 0 to 1 during post-configuration.)
+ * @private: Private data pointer which is either set by the low-level driver
+ * itself, or by a call to comedi_alloc_spriv() which allocates storage.
+ * In the latter case, the storage is automatically freed after the
+ * low-level driver's "detach" handler is called for the device.
+ * (Initialized by the low-level driver.)
+ * @async: Pointer to &struct comedi_async id the subdevice supports
+ * asynchronous acquisition commands. (Allocated and initialized during
+ * post-configuration if needed.)
+ * @lock: Pointer to a file object that performed a %COMEDI_LOCK ioctl on the
+ * subdevice. (Initially NULL.)
+ * @busy: Pointer to a file object that is performing an asynchronous
+ * acquisition command on the subdevice. (Initially NULL.)
+ * @runflags: Internal flags for use by COMEDI core, mostly indicating whether
+ * an asynchronous acquisition command is running.
+ * @spin_lock: Generic spin-lock for use by the COMEDI core and the low-level
+ * driver. (Initialized by comedi_alloc_subdevices().)
+ * @io_bits: Bit-mask indicating the channel directions for a DIO subdevice
+ * with no more than 32 channels. A '1' at a bit position indicates the
+ * corresponding channel is configured as an output. (Initialized by the
+ * low-level driver for a DIO subdevice. Forced to all-outputs during
+ * post-configuration for a digital output subdevice.)
+ * @maxdata: If non-zero, this is the maximum raw data value of each channel.
+ * If zero, the maximum data value is channel-specific. (Initialized by
+ * the low-level driver.)
+ * @maxdata_list: If the maximum data value is channel-specific, this points
+ * to an array of maximum data values indexed by channel index.
+ * (Initialized by the low-level driver.)
+ * @range_table: If non-NULL, this points to a COMEDI range table for the
+ * subdevice. If NULL, the range table is channel-specific. (Initialized
+ * by the low-level driver, will be set to an "invalid" range table during
+ * post-configuration if @range_table and @range_table_list are both
+ * NULL.)
+ * @range_table_list: If the COMEDI range table is channel-specific, this
+ * points to an array of pointers to COMEDI range tables indexed by
+ * channel number. (Initialized by the low-level driver.)
+ * @chanlist: Not used.
+ * @insn_read: Optional pointer to a handler for the %INSN_READ instruction.
+ * (Initialized by the low-level driver, or set to a default handler
+ * during post-configuration.)
+ * @insn_write: Optional pointer to a handler for the %INSN_WRITE instruction.
+ * (Initialized by the low-level driver, or set to a default handler
+ * during post-configuration.)
+ * @insn_bits: Optional pointer to a handler for the %INSN_BITS instruction
+ * for a digital input, digital output or digital input/output subdevice.
+ * (Initialized by the low-level driver, or set to a default handler
+ * during post-configuration.)
+ * @insn_config: Optional pointer to a handler for the %INSN_CONFIG
+ * instruction. (Initialized by the low-level driver, or set to a default
+ * handler during post-configuration.)
+ * @do_cmd: If the subdevice supports asynchronous acquisition commands, this
+ * points to a handler to set it up in hardware. (Initialized by the
+ * low-level driver.)
+ * @do_cmdtest: If the subdevice supports asynchronous acquisition commands,
+ * this points to a handler used to check and possibly tweak a prospective
+ * acquisition command without setting it up in hardware. (Initialized by
+ * the low-level driver.)
+ * @poll: If the subdevice supports asynchronous acquisition commands, this
+ * is an optional pointer to a handler for the %COMEDI_POLL ioctl which
+ * instructs the low-level driver to synchronize buffers. (Initialized by
+ * the low-level driver if needed.)
+ * @cancel: If the subdevice supports asynchronous acquisition commands, this
+ * points to a handler used to terminate a running command. (Initialized
+ * by the low-level driver.)
+ * @buf_change: If the subdevice supports asynchronous acquisition commands,
+ * this is an optional pointer to a handler that is called when the data
+ * buffer for handling asynchronous commands is allocated or reallocated.
+ * (Initialized by the low-level driver if needed.)
+ * @munge: If the subdevice supports asynchronous acquisition commands and
+ * uses DMA to transfer data from the hardware to the acquisition buffer,
+ * this points to a function used to "munge" the data values from the
+ * hardware into the format expected by COMEDI. (Initialized by the
+ * low-level driver if needed.)
+ * @async_dma_dir: If the subdevice supports asynchronous acquisition commands
+ * and uses DMA to transfer data from the hardware to the acquisition
+ * buffer, this sets the DMA direction for the buffer. (initialized to
+ * %DMA_NONE by comedi_alloc_subdevices() and changed by the low-level
+ * driver if necessary.)
+ * @state: Handy bit-mask indicating the output states for a DIO or digital
+ * output subdevice with no more than 32 channels. (Initialized by the
+ * low-level driver.)
+ * @class_dev: If the subdevice supports asynchronous acquisition commands,
+ * this points to a sysfs comediX_subdY device where X is the minor device
+ * number of the COMEDI device and Y is the subdevice number. The minor
+ * device number for the sysfs device is allocated dynamically in the
+ * range 48 to 255. This is used to allow the COMEDI device to be opened
+ * with a different default read or write subdevice. (Allocated during
+ * post-configuration if needed.)
+ * @minor: If @class_dev is set, this is its dynamically allocated minor
+ * device number. (Set during post-configuration if necessary.)
+ * @readback: Optional pointer to memory allocated by
+ * comedi_alloc_subdev_readback() used to hold the values written to
+ * analog output channels so they can be read back. The storage is
+ * automatically freed after the low-level driver's "detach" handler is
+ * called for the device. (Initialized by the low-level driver.)
+ *
+ * This is the main control structure for a COMEDI subdevice. If the subdevice
+ * supports asynchronous acquisition commands, additional information is stored
+ * in the &struct comedi_async pointed to by @async.
+ *
+ * Most of the subdevice is initialized by the low-level driver's "attach" or
+ * "auto_attach" handlers but parts of it are initialized by
+ * comedi_alloc_subdevices(), and other parts are initialized during
+ * post-configuration on return from that handler.
+ *
+ * A low-level driver that sets @insn_bits for a digital input, digital output,
+ * or DIO subdevice may leave @insn_read and @insn_write uninitialized, in
+ * which case they will be set to a default handler during post-configuration
+ * that uses @insn_bits to emulate the %INSN_READ and %INSN_WRITE instructions.
+ */
+struct comedi_subdevice {
+ struct comedi_device *device;
+ int index;
+ int type;
+ int n_chan;
+ int subdev_flags;
+ int len_chanlist; /* maximum length of channel/gain list */
+
+ void *private;
+
+ struct comedi_async *async;
+
+ void *lock;
+ void *busy;
+ unsigned int runflags;
+ spinlock_t spin_lock; /* generic spin-lock for COMEDI and drivers */
+
+ unsigned int io_bits;
+
+ unsigned int maxdata; /* if maxdata==0, use list */
+ const unsigned int *maxdata_list; /* list is channel specific */
+
+ const struct comedi_lrange *range_table;
+ const struct comedi_lrange *const *range_table_list;
+
+ unsigned int *chanlist; /* driver-owned chanlist (not used) */
+
+ int (*insn_read)(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+ int (*insn_write)(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+ int (*insn_bits)(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+ int (*insn_config)(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data);
+
+ int (*do_cmd)(struct comedi_device *dev, struct comedi_subdevice *s);
+ int (*do_cmdtest)(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_cmd *cmd);
+ int (*poll)(struct comedi_device *dev, struct comedi_subdevice *s);
+ int (*cancel)(struct comedi_device *dev, struct comedi_subdevice *s);
+
+ /* called when the buffer changes */
+ int (*buf_change)(struct comedi_device *dev,
+ struct comedi_subdevice *s);
+
+ void (*munge)(struct comedi_device *dev, struct comedi_subdevice *s,
+ void *data, unsigned int num_bytes,
+ unsigned int start_chan_index);
+ enum dma_data_direction async_dma_dir;
+
+ unsigned int state;
+
+ struct device *class_dev;
+ int minor;
+
+ unsigned int *readback;
+};
+
+/**
+ * struct comedi_buf_page - Describe a page of a COMEDI buffer
+ * @virt_addr: Kernel address of page.
+ * @dma_addr: DMA address of page if in DMA coherent memory.
+ */
+struct comedi_buf_page {
+ void *virt_addr;
+ dma_addr_t dma_addr;
+};
+
+/**
+ * struct comedi_buf_map - Describe pages in a COMEDI buffer
+ * @dma_hw_dev: Low-level hardware &struct device pointer copied from the
+ * COMEDI device's hw_dev member.
+ * @page_list: Pointer to array of &struct comedi_buf_page, one for each
+ * page in the buffer.
+ * @n_pages: Number of pages in the buffer.
+ * @dma_dir: DMA direction used to allocate pages of DMA coherent memory,
+ * or %DMA_NONE if pages allocated from regular memory.
+ * @refcount: &struct kref reference counter used to free the buffer.
+ *
+ * A COMEDI data buffer is allocated as individual pages, either in
+ * conventional memory or DMA coherent memory, depending on the attached,
+ * low-level hardware device. (The buffer pages also get mapped into the
+ * kernel's contiguous virtual address space pointed to by the 'prealloc_buf'
+ * member of &struct comedi_async.)
+ *
+ * The buffer is normally freed when the COMEDI device is detached from the
+ * low-level driver (which may happen due to device removal), but if it happens
+ * to be mmapped at the time, the pages cannot be freed until the buffer has
+ * been munmapped. That is what the reference counter is for. (The virtual
+ * address space pointed by 'prealloc_buf' is freed when the COMEDI device is
+ * detached.)
+ */
+struct comedi_buf_map {
+ struct device *dma_hw_dev;
+ struct comedi_buf_page *page_list;
+ unsigned int n_pages;
+ enum dma_data_direction dma_dir;
+ struct kref refcount;
+};
+
+/**
+ * struct comedi_async - Control data for asynchronous COMEDI commands
+ * @prealloc_buf: Kernel virtual address of allocated acquisition buffer.
+ * @prealloc_bufsz: Buffer size (in bytes).
+ * @buf_map: Map of buffer pages.
+ * @max_bufsize: Maximum allowed buffer size (in bytes).
+ * @buf_write_count: "Write completed" count (in bytes, modulo 2**32).
+ * @buf_write_alloc_count: "Allocated for writing" count (in bytes,
+ * modulo 2**32).
+ * @buf_read_count: "Read completed" count (in bytes, modulo 2**32).
+ * @buf_read_alloc_count: "Allocated for reading" count (in bytes,
+ * modulo 2**32).
+ * @buf_write_ptr: Buffer position for writer.
+ * @buf_read_ptr: Buffer position for reader.
+ * @cur_chan: Current position in chanlist for scan (for those drivers that
+ * use it).
+ * @scans_done: The number of scans completed.
+ * @scan_progress: Amount received or sent for current scan (in bytes).
+ * @munge_chan: Current position in chanlist for "munging".
+ * @munge_count: "Munge" count (in bytes, modulo 2**32).
+ * @munge_ptr: Buffer position for "munging".
+ * @events: Bit-vector of events that have occurred.
+ * @cmd: Details of comedi command in progress.
+ * @wait_head: Task wait queue for file reader or writer.
+ * @cb_mask: Bit-vector of events that should wake waiting tasks.
+ * @inttrig: Software trigger function for command, or NULL.
+ *
+ * Note about the ..._count and ..._ptr members:
+ *
+ * Think of the _Count values being integers of unlimited size, indexing
+ * into a buffer of infinite length (though only an advancing portion
+ * of the buffer of fixed length prealloc_bufsz is accessible at any
+ * time). Then:
+ *
+ * Buf_Read_Count <= Buf_Read_Alloc_Count <= Munge_Count <=
+ * Buf_Write_Count <= Buf_Write_Alloc_Count <=
+ * (Buf_Read_Count + prealloc_bufsz)
+ *
+ * (Those aren't the actual members, apart from prealloc_bufsz.) When the
+ * buffer is reset, those _Count values start at 0 and only increase in value,
+ * maintaining the above inequalities until the next time the buffer is
+ * reset. The buffer is divided into the following regions by the inequalities:
+ *
+ * [0, Buf_Read_Count):
+ * old region no longer accessible
+ *
+ * [Buf_Read_Count, Buf_Read_Alloc_Count):
+ * filled and munged region allocated for reading but not yet read
+ *
+ * [Buf_Read_Alloc_Count, Munge_Count):
+ * filled and munged region not yet allocated for reading
+ *
+ * [Munge_Count, Buf_Write_Count):
+ * filled region not yet munged
+ *
+ * [Buf_Write_Count, Buf_Write_Alloc_Count):
+ * unfilled region allocated for writing but not yet written
+ *
+ * [Buf_Write_Alloc_Count, Buf_Read_Count + prealloc_bufsz):
+ * unfilled region not yet allocated for writing
+ *
+ * [Buf_Read_Count + prealloc_bufsz, infinity):
+ * unfilled region not yet accessible
+ *
+ * Data needs to be written into the buffer before it can be read out,
+ * and may need to be converted (or "munged") between the two
+ * operations. Extra unfilled buffer space may need to allocated for
+ * writing (advancing Buf_Write_Alloc_Count) before new data is written.
+ * After writing new data, the newly filled space needs to be released
+ * (advancing Buf_Write_Count). This also results in the new data being
+ * "munged" (advancing Munge_Count). Before data is read out of the
+ * buffer, extra space may need to be allocated for reading (advancing
+ * Buf_Read_Alloc_Count). After the data has been read out, the space
+ * needs to be released (advancing Buf_Read_Count).
+ *
+ * The actual members, buf_read_count, buf_read_alloc_count,
+ * munge_count, buf_write_count, and buf_write_alloc_count take the
+ * value of the corresponding capitalized _Count values modulo 2^32
+ * (UINT_MAX+1). Subtracting a "higher" _count value from a "lower"
+ * _count value gives the same answer as subtracting a "higher" _Count
+ * value from a lower _Count value because prealloc_bufsz < UINT_MAX+1.
+ * The modulo operation is done implicitly.
+ *
+ * The buf_read_ptr, munge_ptr, and buf_write_ptr members take the value
+ * of the corresponding capitalized _Count values modulo prealloc_bufsz.
+ * These correspond to byte indices in the physical buffer. The modulo
+ * operation is done by subtracting prealloc_bufsz when the value
+ * exceeds prealloc_bufsz (assuming prealloc_bufsz plus the increment is
+ * less than or equal to UINT_MAX).
+ */
+struct comedi_async {
+ void *prealloc_buf;
+ unsigned int prealloc_bufsz;
+ struct comedi_buf_map *buf_map;
+ unsigned int max_bufsize;
+ unsigned int buf_write_count;
+ unsigned int buf_write_alloc_count;
+ unsigned int buf_read_count;
+ unsigned int buf_read_alloc_count;
+ unsigned int buf_write_ptr;
+ unsigned int buf_read_ptr;
+ unsigned int cur_chan;
+ unsigned int scans_done;
+ unsigned int scan_progress;
+ unsigned int munge_chan;
+ unsigned int munge_count;
+ unsigned int munge_ptr;
+ unsigned int events;
+ struct comedi_cmd cmd;
+ wait_queue_head_t wait_head;
+ unsigned int cb_mask;
+ int (*inttrig)(struct comedi_device *dev, struct comedi_subdevice *s,
+ unsigned int x);
+};
+
+/**
+ * enum comedi_cb - &struct comedi_async callback "events"
+ * @COMEDI_CB_EOS: end-of-scan
+ * @COMEDI_CB_EOA: end-of-acquisition/output
+ * @COMEDI_CB_BLOCK: data has arrived, wakes up read() / write()
+ * @COMEDI_CB_EOBUF: DEPRECATED: end of buffer
+ * @COMEDI_CB_ERROR: card error during acquisition
+ * @COMEDI_CB_OVERFLOW: buffer overflow/underflow
+ * @COMEDI_CB_ERROR_MASK: events that indicate an error has occurred
+ * @COMEDI_CB_CANCEL_MASK: events that will cancel an async command
+ */
+enum comedi_cb {
+ COMEDI_CB_EOS = BIT(0),
+ COMEDI_CB_EOA = BIT(1),
+ COMEDI_CB_BLOCK = BIT(2),
+ COMEDI_CB_EOBUF = BIT(3),
+ COMEDI_CB_ERROR = BIT(4),
+ COMEDI_CB_OVERFLOW = BIT(5),
+ /* masks */
+ COMEDI_CB_ERROR_MASK = (COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW),
+ COMEDI_CB_CANCEL_MASK = (COMEDI_CB_EOA | COMEDI_CB_ERROR_MASK)
+};
+
+/**
+ * struct comedi_driver - COMEDI driver registration
+ * @driver_name: Name of driver.
+ * @module: Owning module.
+ * @attach: The optional "attach" handler for manually configured COMEDI
+ * devices.
+ * @detach: The "detach" handler for deconfiguring COMEDI devices.
+ * @auto_attach: The optional "auto_attach" handler for automatically
+ * configured COMEDI devices.
+ * @num_names: Optional number of "board names" supported.
+ * @board_name: Optional pointer to a pointer to a board name. The pointer
+ * to a board name is embedded in an element of a driver-defined array
+ * of static, read-only board type information.
+ * @offset: Optional size of each element of the driver-defined array of
+ * static, read-only board type information, i.e. the offset between each
+ * pointer to a board name.
+ *
+ * This is used with comedi_driver_register() and comedi_driver_unregister() to
+ * register and unregister a low-level COMEDI driver with the COMEDI core.
+ *
+ * If @num_names is non-zero, @board_name should be non-NULL, and @offset
+ * should be at least sizeof(*board_name). These are used by the handler for
+ * the %COMEDI_DEVCONFIG ioctl to match a hardware device and its driver by
+ * board name. If @num_names is zero, the %COMEDI_DEVCONFIG ioctl matches a
+ * hardware device and its driver by driver name. This is only useful if the
+ * @attach handler is set. If @num_names is non-zero, the driver's @attach
+ * handler will be called with the COMEDI device structure's board_ptr member
+ * pointing to the matched pointer to a board name within the driver's private
+ * array of static, read-only board type information.
+ *
+ * The @detach handler has two roles. If a COMEDI device was successfully
+ * configured by the @attach or @auto_attach handler, it is called when the
+ * device is being deconfigured (by the %COMEDI_DEVCONFIG ioctl, or due to
+ * unloading of the driver, or due to device removal). It is also called when
+ * the @attach or @auto_attach handler returns an error. Therefore, the
+ * @attach or @auto_attach handlers can defer clean-up on error until the
+ * @detach handler is called. If the @attach or @auto_attach handlers free
+ * any resources themselves, they must prevent the @detach handler from
+ * freeing the same resources. The @detach handler must not assume that all
+ * resources requested by the @attach or @auto_attach handler were
+ * successfully allocated.
+ */
+struct comedi_driver {
+ /* private: */
+ struct comedi_driver *next; /* Next in list of COMEDI drivers. */
+ /* public: */
+ const char *driver_name;
+ struct module *module;
+ int (*attach)(struct comedi_device *dev, struct comedi_devconfig *it);
+ void (*detach)(struct comedi_device *dev);
+ int (*auto_attach)(struct comedi_device *dev, unsigned long context);
+ unsigned int num_names;
+ const char *const *board_name;
+ int offset;
+};
+
+/**
+ * struct comedi_device - Working data for a COMEDI device
+ * @use_count: Number of open file objects.
+ * @driver: Low-level COMEDI driver attached to this COMEDI device.
+ * @pacer: Optional pointer to a dynamically allocated acquisition pacer
+ * control. It is freed automatically after the COMEDI device is
+ * detached from the low-level driver.
+ * @private: Optional pointer to private data allocated by the low-level
+ * driver. It is freed automatically after the COMEDI device is
+ * detached from the low-level driver.
+ * @class_dev: Sysfs comediX device.
+ * @minor: Minor device number of COMEDI char device (0-47).
+ * @detach_count: Counter incremented every time the COMEDI device is detached.
+ * Used for checking a previous attachment is still valid.
+ * @hw_dev: Optional pointer to the low-level hardware &struct device. It is
+ * required for automatically configured COMEDI devices and optional for
+ * COMEDI devices configured by the %COMEDI_DEVCONFIG ioctl, although
+ * the bus-specific COMEDI functions only work if it is set correctly.
+ * It is also passed to dma_alloc_coherent() for COMEDI subdevices that
+ * have their 'async_dma_dir' member set to something other than
+ * %DMA_NONE.
+ * @board_name: Pointer to a COMEDI board name or a COMEDI driver name. When
+ * the low-level driver's "attach" handler is called by the handler for
+ * the %COMEDI_DEVCONFIG ioctl, it either points to a matched board name
+ * string if the 'num_names' member of the &struct comedi_driver is
+ * non-zero, otherwise it points to the low-level driver name string.
+ * When the low-lever driver's "auto_attach" handler is called for an
+ * automatically configured COMEDI device, it points to the low-level
+ * driver name string. The low-level driver is free to change it in its
+ * "attach" or "auto_attach" handler if it wishes.
+ * @board_ptr: Optional pointer to private, read-only board type information in
+ * the low-level driver. If the 'num_names' member of the &struct
+ * comedi_driver is non-zero, the handler for the %COMEDI_DEVCONFIG ioctl
+ * will point it to a pointer to a matched board name string within the
+ * driver's private array of static, read-only board type information when
+ * calling the driver's "attach" handler. The low-level driver is free to
+ * change it.
+ * @attached: Flag indicating that the COMEDI device is attached to a low-level
+ * driver.
+ * @ioenabled: Flag used to indicate that a PCI device has been enabled and
+ * its regions requested.
+ * @spinlock: Generic spin-lock for use by the low-level driver.
+ * @mutex: Generic mutex for use by the COMEDI core module.
+ * @attach_lock: &struct rw_semaphore used to guard against the COMEDI device
+ * being detached while an operation is in progress. The down_write()
+ * operation is only allowed while @mutex is held and is used when
+ * changing @attached and @detach_count and calling the low-level driver's
+ * "detach" handler. The down_read() operation is generally used without
+ * holding @mutex.
+ * @refcount: &struct kref reference counter for freeing COMEDI device.
+ * @n_subdevices: Number of COMEDI subdevices allocated by the low-level
+ * driver for this device.
+ * @subdevices: Dynamically allocated array of COMEDI subdevices.
+ * @mmio: Optional pointer to a remapped MMIO region set by the low-level
+ * driver.
+ * @iobase: Optional base of an I/O port region requested by the low-level
+ * driver.
+ * @iolen: Length of I/O port region requested at @iobase.
+ * @irq: Optional IRQ number requested by the low-level driver.
+ * @read_subdev: Optional pointer to a default COMEDI subdevice operated on by
+ * the read() file operation. Set by the low-level driver.
+ * @write_subdev: Optional pointer to a default COMEDI subdevice operated on by
+ * the write() file operation. Set by the low-level driver.
+ * @async_queue: Storage for fasync_helper().
+ * @open: Optional pointer to a function set by the low-level driver to be
+ * called when @use_count changes from 0 to 1.
+ * @close: Optional pointer to a function set by the low-level driver to be
+ * called when @use_count changed from 1 to 0.
+ * @insn_device_config: Optional pointer to a handler for all sub-instructions
+ * except %INSN_DEVICE_CONFIG_GET_ROUTES of the %INSN_DEVICE_CONFIG
+ * instruction. If this is not initialized by the low-level driver, a
+ * default handler will be set during post-configuration.
+ * @get_valid_routes: Optional pointer to a handler for the
+ * %INSN_DEVICE_CONFIG_GET_ROUTES sub-instruction of the
+ * %INSN_DEVICE_CONFIG instruction set. If this is not initialized by the
+ * low-level driver, a default handler that copies zero routes back to the
+ * user will be used.
+ *
+ * This is the main control data structure for a COMEDI device (as far as the
+ * COMEDI core is concerned). There are two groups of COMEDI devices -
+ * "legacy" devices that are configured by the handler for the
+ * %COMEDI_DEVCONFIG ioctl, and automatically configured devices resulting
+ * from a call to comedi_auto_config() as a result of a bus driver probe in
+ * a low-level COMEDI driver. The "legacy" COMEDI devices are allocated
+ * during module initialization if the "comedi_num_legacy_minors" module
+ * parameter is non-zero and use minor device numbers from 0 to
+ * comedi_num_legacy_minors minus one. The automatically configured COMEDI
+ * devices are allocated on demand and use minor device numbers from
+ * comedi_num_legacy_minors to 47.
+ */
+struct comedi_device {
+ int use_count;
+ struct comedi_driver *driver;
+ struct comedi_8254 *pacer;
+ void *private;
+
+ struct device *class_dev;
+ int minor;
+ unsigned int detach_count;
+ struct device *hw_dev;
+
+ const char *board_name;
+ const void *board_ptr;
+ unsigned int attached:1;
+ unsigned int ioenabled:1;
+ spinlock_t spinlock; /* generic spin-lock for low-level driver */
+ struct mutex mutex; /* generic mutex for COMEDI core */
+ struct rw_semaphore attach_lock;
+ struct kref refcount;
+
+ int n_subdevices;
+ struct comedi_subdevice *subdevices;
+
+ /* dumb */
+ void __iomem *mmio;
+ unsigned long iobase;
+ unsigned long iolen;
+ unsigned int irq;
+
+ struct comedi_subdevice *read_subdev;
+ struct comedi_subdevice *write_subdev;
+
+ struct fasync_struct *async_queue;
+
+ int (*open)(struct comedi_device *dev);
+ void (*close)(struct comedi_device *dev);
+ int (*insn_device_config)(struct comedi_device *dev,
+ struct comedi_insn *insn, unsigned int *data);
+ unsigned int (*get_valid_routes)(struct comedi_device *dev,
+ unsigned int n_pairs,
+ unsigned int *pair_data);
+};
+
+/*
+ * function prototypes
+ */
+
+void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);
+
+struct comedi_device *comedi_dev_get_from_minor(unsigned int minor);
+int comedi_dev_put(struct comedi_device *dev);
+
+bool comedi_is_subdevice_running(struct comedi_subdevice *s);
+
+void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size);
+void comedi_set_spriv_auto_free(struct comedi_subdevice *s);
+
+int comedi_check_chanlist(struct comedi_subdevice *s,
+ int n,
+ unsigned int *chanlist);
+
+/* range stuff */
+
+#define RANGE(a, b) {(a) * 1e6, (b) * 1e6, 0}
+#define RANGE_ext(a, b) {(a) * 1e6, (b) * 1e6, RF_EXTERNAL}
+#define RANGE_mA(a, b) {(a) * 1e6, (b) * 1e6, UNIT_mA}
+#define RANGE_unitless(a, b) {(a) * 1e6, (b) * 1e6, 0}
+#define BIP_RANGE(a) {-(a) * 1e6, (a) * 1e6, 0}
+#define UNI_RANGE(a) {0, (a) * 1e6, 0}
+
+extern const struct comedi_lrange range_bipolar10;
+extern const struct comedi_lrange range_bipolar5;
+extern const struct comedi_lrange range_bipolar2_5;
+extern const struct comedi_lrange range_unipolar10;
+extern const struct comedi_lrange range_unipolar5;
+extern const struct comedi_lrange range_unipolar2_5;
+extern const struct comedi_lrange range_0_20mA;
+extern const struct comedi_lrange range_4_20mA;
+extern const struct comedi_lrange range_0_32mA;
+extern const struct comedi_lrange range_unknown;
+
+#define range_digital range_unipolar5
+
+/**
+ * struct comedi_lrange - Describes a COMEDI range table
+ * @length: Number of entries in the range table.
+ * @range: Array of &struct comedi_krange, one for each range.
+ *
+ * Each element of @range[] describes the minimum and maximum physical range
+ * and the type of units. Typically, the type of unit is %UNIT_volt
+ * (i.e. volts) and the minimum and maximum are in millionths of a volt.
+ * There may also be a flag that indicates the minimum and maximum are merely
+ * scale factors for an unknown, external reference.
+ */
+struct comedi_lrange {
+ int length;
+ struct comedi_krange range[];
+};
+
+/**
+ * comedi_range_is_bipolar() - Test if subdevice range is bipolar
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is bipolar by checking whether its minimum value
+ * is negative.
+ *
+ * Assumes @range is valid. Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is bipolar.
+ * %false if the range is unipolar.
+ */
+static inline bool comedi_range_is_bipolar(struct comedi_subdevice *s,
+ unsigned int range)
+{
+ return s->range_table->range[range].min < 0;
+}
+
+/**
+ * comedi_range_is_unipolar() - Test if subdevice range is unipolar
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is unipolar by checking whether its minimum value
+ * is at least 0.
+ *
+ * Assumes @range is valid. Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is unipolar.
+ * %false if the range is bipolar.
+ */
+static inline bool comedi_range_is_unipolar(struct comedi_subdevice *s,
+ unsigned int range)
+{
+ return s->range_table->range[range].min >= 0;
+}
+
+/**
+ * comedi_range_is_external() - Test if subdevice range is external
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is externally reference by checking whether its
+ * %RF_EXTERNAL flag is set.
+ *
+ * Assumes @range is valid. Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is external.
+ * %false if the range is internal.
+ */
+static inline bool comedi_range_is_external(struct comedi_subdevice *s,
+ unsigned int range)
+{
+ return !!(s->range_table->range[range].flags & RF_EXTERNAL);
+}
+
+/**
+ * comedi_chan_range_is_bipolar() - Test if channel-specific range is bipolar
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is bipolar by checking whether its minimum value
+ * is negative.
+ *
+ * Assumes @chan and @range are valid. Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is bipolar.
+ * %false if the range is unipolar.
+ */
+static inline bool comedi_chan_range_is_bipolar(struct comedi_subdevice *s,
+ unsigned int chan,
+ unsigned int range)
+{
+ return s->range_table_list[chan]->range[range].min < 0;
+}
+
+/**
+ * comedi_chan_range_is_unipolar() - Test if channel-specific range is unipolar
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is unipolar by checking whether its minimum value
+ * is at least 0.
+ *
+ * Assumes @chan and @range are valid. Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is unipolar.
+ * %false if the range is bipolar.
+ */
+static inline bool comedi_chan_range_is_unipolar(struct comedi_subdevice *s,
+ unsigned int chan,
+ unsigned int range)
+{
+ return s->range_table_list[chan]->range[range].min >= 0;
+}
+
+/**
+ * comedi_chan_range_is_external() - Test if channel-specific range is external
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is externally reference by checking whether its
+ * %RF_EXTERNAL flag is set.
+ *
+ * Assumes @chan and @range are valid. Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ * %true if the range is bipolar.
+ * %false if the range is unipolar.
+ */
+static inline bool comedi_chan_range_is_external(struct comedi_subdevice *s,
+ unsigned int chan,
+ unsigned int range)
+{
+ return !!(s->range_table_list[chan]->range[range].flags & RF_EXTERNAL);
+}
+
+/**
+ * comedi_offset_munge() - Convert between offset binary and 2's complement
+ * @s: COMEDI subdevice.
+ * @val: Value to be converted.
+ *
+ * Toggles the highest bit of a sample value to toggle between offset binary
+ * and 2's complement. Assumes that @s->maxdata is a power of 2 minus 1.
+ *
+ * Return: The converted value.
+ */
+static inline unsigned int comedi_offset_munge(struct comedi_subdevice *s,
+ unsigned int val)
+{
+ return val ^ s->maxdata ^ (s->maxdata >> 1);
+}
+
+/**
+ * comedi_bytes_per_sample() - Determine subdevice sample size
+ * @s: COMEDI subdevice.
+ *
+ * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
+ * whether the %SDF_LSAMPL subdevice flag is set or not.
+ *
+ * Return: The subdevice sample size.
+ */
+static inline unsigned int comedi_bytes_per_sample(struct comedi_subdevice *s)
+{
+ return s->subdev_flags & SDF_LSAMPL ? sizeof(int) : sizeof(short);
+}
+
+/**
+ * comedi_sample_shift() - Determine log2 of subdevice sample size
+ * @s: COMEDI subdevice.
+ *
+ * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
+ * whether the %SDF_LSAMPL subdevice flag is set or not. The log2 of the
+ * sample size will be 2 or 1 and can be used as the right operand of a
+ * bit-shift operator to multiply or divide something by the sample size.
+ *
+ * Return: log2 of the subdevice sample size.
+ */
+static inline unsigned int comedi_sample_shift(struct comedi_subdevice *s)
+{
+ return s->subdev_flags & SDF_LSAMPL ? 2 : 1;
+}
+
+/**
+ * comedi_bytes_to_samples() - Convert a number of bytes to a number of samples
+ * @s: COMEDI subdevice.
+ * @nbytes: Number of bytes
+ *
+ * Return: The number of bytes divided by the subdevice sample size.
+ */
+static inline unsigned int comedi_bytes_to_samples(struct comedi_subdevice *s,
+ unsigned int nbytes)
+{
+ return nbytes >> comedi_sample_shift(s);
+}
+
+/**
+ * comedi_samples_to_bytes() - Convert a number of samples to a number of bytes
+ * @s: COMEDI subdevice.
+ * @nsamples: Number of samples.
+ *
+ * Return: The number of samples multiplied by the subdevice sample size.
+ * (Does not check for arithmetic overflow.)
+ */
+static inline unsigned int comedi_samples_to_bytes(struct comedi_subdevice *s,
+ unsigned int nsamples)
+{
+ return nsamples << comedi_sample_shift(s);
+}
+
+/**
+ * comedi_check_trigger_src() - Trivially validate a comedi_cmd trigger source
+ * @src: Pointer to the trigger source to validate.
+ * @flags: Bitmask of valid %TRIG_* for the trigger.
+ *
+ * This is used in "step 1" of the do_cmdtest functions of comedi drivers
+ * to validate the comedi_cmd triggers. The mask of the @src against the
+ * @flags allows the userspace comedilib to pass all the comedi_cmd
+ * triggers as %TRIG_ANY and get back a bitmask of the valid trigger sources.
+ *
+ * Return:
+ * 0 if trigger sources in *@src are all supported.
+ * -EINVAL if any trigger source in *@src is unsupported.
+ */
+static inline int comedi_check_trigger_src(unsigned int *src,
+ unsigned int flags)
+{
+ unsigned int orig_src = *src;
+
+ *src = orig_src & flags;
+ if (*src == TRIG_INVALID || *src != orig_src)
+ return -EINVAL;
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_is_unique() - Make sure a trigger source is unique
+ * @src: The trigger source to check.
+ *
+ * Return:
+ * 0 if no more than one trigger source is set.
+ * -EINVAL if more than one trigger source is set.
+ */
+static inline int comedi_check_trigger_is_unique(unsigned int src)
+{
+ /* this test is true if more than one _src bit is set */
+ if ((src & (src - 1)) != 0)
+ return -EINVAL;
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_is() - Trivially validate a trigger argument
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The value the argument should be.
+ *
+ * Forces *@arg to be @val.
+ *
+ * Return:
+ * 0 if *@arg was already @val.
+ * -EINVAL if *@arg differed from @val.
+ */
+static inline int comedi_check_trigger_arg_is(unsigned int *arg,
+ unsigned int val)
+{
+ if (*arg != val) {
+ *arg = val;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_min() - Trivially validate a trigger argument min
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The minimum value the argument should be.
+ *
+ * Forces *@arg to be at least @val, setting it to @val if necessary.
+ *
+ * Return:
+ * 0 if *@arg was already at least @val.
+ * -EINVAL if *@arg was less than @val.
+ */
+static inline int comedi_check_trigger_arg_min(unsigned int *arg,
+ unsigned int val)
+{
+ if (*arg < val) {
+ *arg = val;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_max() - Trivially validate a trigger argument max
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The maximum value the argument should be.
+ *
+ * Forces *@arg to be no more than @val, setting it to @val if necessary.
+ *
+ * Return:
+ * 0 if*@arg was already no more than @val.
+ * -EINVAL if *@arg was greater than @val.
+ */
+static inline int comedi_check_trigger_arg_max(unsigned int *arg,
+ unsigned int val)
+{
+ if (*arg > val) {
+ *arg = val;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * Must set dev->hw_dev if you wish to dma directly into comedi's buffer.
+ * Also useful for retrieving a previously configured hardware device of
+ * known bus type. Set automatically for auto-configured devices.
+ * Automatically set to NULL when detaching hardware device.
+ */
+int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev);
+
+/**
+ * comedi_buf_n_bytes_ready - Determine amount of unread data in buffer
+ * @s: COMEDI subdevice.
+ *
+ * Determines the number of bytes of unread data in the asynchronous
+ * acquisition data buffer for a subdevice. The data in question might not
+ * have been fully "munged" yet.
+ *
+ * Returns: The amount of unread data in bytes.
+ */
+static inline unsigned int comedi_buf_n_bytes_ready(struct comedi_subdevice *s)
+{
+ return s->async->buf_write_count - s->async->buf_read_count;
+}
+
+unsigned int comedi_buf_write_alloc(struct comedi_subdevice *s, unsigned int n);
+unsigned int comedi_buf_write_free(struct comedi_subdevice *s, unsigned int n);
+
+unsigned int comedi_buf_read_n_available(struct comedi_subdevice *s);
+unsigned int comedi_buf_read_alloc(struct comedi_subdevice *s, unsigned int n);
+unsigned int comedi_buf_read_free(struct comedi_subdevice *s, unsigned int n);
+
+unsigned int comedi_buf_write_samples(struct comedi_subdevice *s,
+ const void *data, unsigned int nsamples);
+unsigned int comedi_buf_read_samples(struct comedi_subdevice *s,
+ void *data, unsigned int nsamples);
+
+/* drivers.c - general comedi driver functions */
+
+#define COMEDI_TIMEOUT_MS 1000
+
+int comedi_timeout(struct comedi_device *dev, struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ int (*cb)(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned long context),
+ unsigned long context);
+
+unsigned int comedi_handle_events(struct comedi_device *dev,
+ struct comedi_subdevice *s);
+
+int comedi_dio_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data,
+ unsigned int mask);
+unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
+ unsigned int *data);
+unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
+ struct comedi_cmd *cmd);
+unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s);
+unsigned int comedi_nscans_left(struct comedi_subdevice *s,
+ unsigned int nscans);
+unsigned int comedi_nsamples_left(struct comedi_subdevice *s,
+ unsigned int nsamples);
+void comedi_inc_scan_progress(struct comedi_subdevice *s,
+ unsigned int num_bytes);
+
+void *comedi_alloc_devpriv(struct comedi_device *dev, size_t size);
+int comedi_alloc_subdevices(struct comedi_device *dev, int num_subdevices);
+int comedi_alloc_subdev_readback(struct comedi_subdevice *s);
+
+int comedi_readback_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data);
+
+int comedi_load_firmware(struct comedi_device *dev, struct device *hw_dev,
+ const char *name,
+ int (*cb)(struct comedi_device *dev,
+ const u8 *data, size_t size,
+ unsigned long context),
+ unsigned long context);
+
+int __comedi_request_region(struct comedi_device *dev,
+ unsigned long start, unsigned long len);
+int comedi_request_region(struct comedi_device *dev,
+ unsigned long start, unsigned long len);
+void comedi_legacy_detach(struct comedi_device *dev);
+
+int comedi_auto_config(struct device *hardware_device,
+ struct comedi_driver *driver, unsigned long context);
+void comedi_auto_unconfig(struct device *hardware_device);
+
+int comedi_driver_register(struct comedi_driver *driver);
+void comedi_driver_unregister(struct comedi_driver *driver);
+
+/**
+ * module_comedi_driver() - Helper macro for registering a comedi driver
+ * @__comedi_driver: comedi_driver struct
+ *
+ * Helper macro for comedi drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only use
+ * this macro once, and calling it replaces module_init() and module_exit().
+ */
+#define module_comedi_driver(__comedi_driver) \
+ module_driver(__comedi_driver, comedi_driver_register, \
+ comedi_driver_unregister)
+
+#endif /* _COMEDIDEV_H */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedilib.h
+ * Header file for kcomedilib
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _LINUX_COMEDILIB_H
+#define _LINUX_COMEDILIB_H
+
+struct comedi_device *comedi_open(const char *path);
+int comedi_close(struct comedi_device *dev);
+int comedi_dio_get_config(struct comedi_device *dev, unsigned int subdev,
+ unsigned int chan, unsigned int *io);
+int comedi_dio_config(struct comedi_device *dev, unsigned int subdev,
+ unsigned int chan, unsigned int io);
+int comedi_dio_bitfield2(struct comedi_device *dev, unsigned int subdev,
+ unsigned int mask, unsigned int *bits,
+ unsigned int base_channel);
+int comedi_find_subdevice_by_type(struct comedi_device *dev, int type,
+ unsigned int subd);
+int comedi_get_n_channels(struct comedi_device *dev, unsigned int subdevice);
+
+#endif
--- /dev/null
+/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
+/*
+ * comedi.h
+ * header file for COMEDI user API
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_H
+#define _COMEDI_H
+
+#define COMEDI_MAJORVERSION 0
+#define COMEDI_MINORVERSION 7
+#define COMEDI_MICROVERSION 76
+#define VERSION "0.7.76"
+
+/* comedi's major device number */
+#define COMEDI_MAJOR 98
+
+/*
+ * maximum number of minor devices. This can be increased, although
+ * kernel structures are currently statically allocated, thus you
+ * don't want this to be much more than you actually use.
+ */
+#define COMEDI_NDEVICES 16
+
+/* number of config options in the config structure */
+#define COMEDI_NDEVCONFOPTS 32
+
+/*
+ * NOTE: 'comedi_config --init-data' is deprecated
+ *
+ * The following indexes in the config options were used by
+ * comedi_config to pass firmware blobs from user space to the
+ * comedi drivers. The request_firmware() hotplug interface is
+ * now used by all comedi drivers instead.
+ */
+
+/* length of nth chunk of firmware data -*/
+#define COMEDI_DEVCONF_AUX_DATA3_LENGTH 25
+#define COMEDI_DEVCONF_AUX_DATA2_LENGTH 26
+#define COMEDI_DEVCONF_AUX_DATA1_LENGTH 27
+#define COMEDI_DEVCONF_AUX_DATA0_LENGTH 28
+/* most significant 32 bits of pointer address (if needed) */
+#define COMEDI_DEVCONF_AUX_DATA_HI 29
+/* least significant 32 bits of pointer address */
+#define COMEDI_DEVCONF_AUX_DATA_LO 30
+#define COMEDI_DEVCONF_AUX_DATA_LENGTH 31 /* total data length */
+
+/* max length of device and driver names */
+#define COMEDI_NAMELEN 20
+
+/* packs and unpacks a channel/range number */
+
+#define CR_PACK(chan, rng, aref) \
+ ((((aref) & 0x3) << 24) | (((rng) & 0xff) << 16) | (chan))
+#define CR_PACK_FLAGS(chan, range, aref, flags) \
+ (CR_PACK(chan, range, aref) | ((flags) & CR_FLAGS_MASK))
+
+#define CR_CHAN(a) ((a) & 0xffff)
+#define CR_RANGE(a) (((a) >> 16) & 0xff)
+#define CR_AREF(a) (((a) >> 24) & 0x03)
+
+#define CR_FLAGS_MASK 0xfc000000
+#define CR_ALT_FILTER 0x04000000
+#define CR_DITHER CR_ALT_FILTER
+#define CR_DEGLITCH CR_ALT_FILTER
+#define CR_ALT_SOURCE 0x08000000
+#define CR_EDGE 0x40000000
+#define CR_INVERT 0x80000000
+
+#define AREF_GROUND 0x00 /* analog ref = analog ground */
+#define AREF_COMMON 0x01 /* analog ref = analog common */
+#define AREF_DIFF 0x02 /* analog ref = differential */
+#define AREF_OTHER 0x03 /* analog ref = other (undefined) */
+
+/* counters -- these are arbitrary values */
+#define GPCT_RESET 0x0001
+#define GPCT_SET_SOURCE 0x0002
+#define GPCT_SET_GATE 0x0004
+#define GPCT_SET_DIRECTION 0x0008
+#define GPCT_SET_OPERATION 0x0010
+#define GPCT_ARM 0x0020
+#define GPCT_DISARM 0x0040
+#define GPCT_GET_INT_CLK_FRQ 0x0080
+
+#define GPCT_INT_CLOCK 0x0001
+#define GPCT_EXT_PIN 0x0002
+#define GPCT_NO_GATE 0x0004
+#define GPCT_UP 0x0008
+#define GPCT_DOWN 0x0010
+#define GPCT_HWUD 0x0020
+#define GPCT_SIMPLE_EVENT 0x0040
+#define GPCT_SINGLE_PERIOD 0x0080
+#define GPCT_SINGLE_PW 0x0100
+#define GPCT_CONT_PULSE_OUT 0x0200
+#define GPCT_SINGLE_PULSE_OUT 0x0400
+
+/* instructions */
+
+#define INSN_MASK_WRITE 0x8000000
+#define INSN_MASK_READ 0x4000000
+#define INSN_MASK_SPECIAL 0x2000000
+
+#define INSN_READ (0 | INSN_MASK_READ)
+#define INSN_WRITE (1 | INSN_MASK_WRITE)
+#define INSN_BITS (2 | INSN_MASK_READ | INSN_MASK_WRITE)
+#define INSN_CONFIG (3 | INSN_MASK_READ | INSN_MASK_WRITE)
+#define INSN_DEVICE_CONFIG (INSN_CONFIG | INSN_MASK_SPECIAL)
+#define INSN_GTOD (4 | INSN_MASK_READ | INSN_MASK_SPECIAL)
+#define INSN_WAIT (5 | INSN_MASK_WRITE | INSN_MASK_SPECIAL)
+#define INSN_INTTRIG (6 | INSN_MASK_WRITE | INSN_MASK_SPECIAL)
+
+/* command flags */
+/* These flags are used in comedi_cmd structures */
+
+#define CMDF_BOGUS 0x00000001 /* do the motions */
+
+/* try to use a real-time interrupt while performing command */
+#define CMDF_PRIORITY 0x00000008
+
+/* wake up on end-of-scan events */
+#define CMDF_WAKE_EOS 0x00000020
+
+#define CMDF_WRITE 0x00000040
+
+#define CMDF_RAWDATA 0x00000080
+
+/* timer rounding definitions */
+#define CMDF_ROUND_MASK 0x00030000
+#define CMDF_ROUND_NEAREST 0x00000000
+#define CMDF_ROUND_DOWN 0x00010000
+#define CMDF_ROUND_UP 0x00020000
+#define CMDF_ROUND_UP_NEXT 0x00030000
+
+#define COMEDI_EV_START 0x00040000
+#define COMEDI_EV_SCAN_BEGIN 0x00080000
+#define COMEDI_EV_CONVERT 0x00100000
+#define COMEDI_EV_SCAN_END 0x00200000
+#define COMEDI_EV_STOP 0x00400000
+
+/* compatibility definitions */
+#define TRIG_BOGUS CMDF_BOGUS
+#define TRIG_RT CMDF_PRIORITY
+#define TRIG_WAKE_EOS CMDF_WAKE_EOS
+#define TRIG_WRITE CMDF_WRITE
+#define TRIG_ROUND_MASK CMDF_ROUND_MASK
+#define TRIG_ROUND_NEAREST CMDF_ROUND_NEAREST
+#define TRIG_ROUND_DOWN CMDF_ROUND_DOWN
+#define TRIG_ROUND_UP CMDF_ROUND_UP
+#define TRIG_ROUND_UP_NEXT CMDF_ROUND_UP_NEXT
+
+/* trigger sources */
+
+#define TRIG_ANY 0xffffffff
+#define TRIG_INVALID 0x00000000
+
+#define TRIG_NONE 0x00000001 /* never trigger */
+#define TRIG_NOW 0x00000002 /* trigger now + N ns */
+#define TRIG_FOLLOW 0x00000004 /* trigger on next lower level trig */
+#define TRIG_TIME 0x00000008 /* trigger at time N ns */
+#define TRIG_TIMER 0x00000010 /* trigger at rate N ns */
+#define TRIG_COUNT 0x00000020 /* trigger when count reaches N */
+#define TRIG_EXT 0x00000040 /* trigger on external signal N */
+#define TRIG_INT 0x00000080 /* trigger on comedi-internal signal N */
+#define TRIG_OTHER 0x00000100 /* driver defined */
+
+/* subdevice flags */
+
+#define SDF_BUSY 0x0001 /* device is busy */
+#define SDF_BUSY_OWNER 0x0002 /* device is busy with your job */
+#define SDF_LOCKED 0x0004 /* subdevice is locked */
+#define SDF_LOCK_OWNER 0x0008 /* you own lock */
+#define SDF_MAXDATA 0x0010 /* maxdata depends on channel */
+#define SDF_FLAGS 0x0020 /* flags depend on channel */
+#define SDF_RANGETYPE 0x0040 /* range type depends on channel */
+#define SDF_PWM_COUNTER 0x0080 /* PWM can automatically switch off */
+#define SDF_PWM_HBRIDGE 0x0100 /* PWM is signed (H-bridge) */
+#define SDF_CMD 0x1000 /* can do commands (deprecated) */
+#define SDF_SOFT_CALIBRATED 0x2000 /* subdevice uses software calibration */
+#define SDF_CMD_WRITE 0x4000 /* can do output commands */
+#define SDF_CMD_READ 0x8000 /* can do input commands */
+
+/* subdevice can be read (e.g. analog input) */
+#define SDF_READABLE 0x00010000
+/* subdevice can be written (e.g. analog output) */
+#define SDF_WRITABLE 0x00020000
+#define SDF_WRITEABLE SDF_WRITABLE /* spelling error in API */
+/* subdevice does not have externally visible lines */
+#define SDF_INTERNAL 0x00040000
+#define SDF_GROUND 0x00100000 /* can do aref=ground */
+#define SDF_COMMON 0x00200000 /* can do aref=common */
+#define SDF_DIFF 0x00400000 /* can do aref=diff */
+#define SDF_OTHER 0x00800000 /* can do aref=other */
+#define SDF_DITHER 0x01000000 /* can do dithering */
+#define SDF_DEGLITCH 0x02000000 /* can do deglitching */
+#define SDF_MMAP 0x04000000 /* can do mmap() */
+#define SDF_RUNNING 0x08000000 /* subdevice is acquiring data */
+#define SDF_LSAMPL 0x10000000 /* subdevice uses 32-bit samples */
+#define SDF_PACKED 0x20000000 /* subdevice can do packed DIO */
+
+/* subdevice types */
+
+/**
+ * enum comedi_subdevice_type - COMEDI subdevice types
+ * @COMEDI_SUBD_UNUSED: Unused subdevice.
+ * @COMEDI_SUBD_AI: Analog input.
+ * @COMEDI_SUBD_AO: Analog output.
+ * @COMEDI_SUBD_DI: Digital input.
+ * @COMEDI_SUBD_DO: Digital output.
+ * @COMEDI_SUBD_DIO: Digital input/output.
+ * @COMEDI_SUBD_COUNTER: Counter.
+ * @COMEDI_SUBD_TIMER: Timer.
+ * @COMEDI_SUBD_MEMORY: Memory, EEPROM, DPRAM.
+ * @COMEDI_SUBD_CALIB: Calibration DACs.
+ * @COMEDI_SUBD_PROC: Processor, DSP.
+ * @COMEDI_SUBD_SERIAL: Serial I/O.
+ * @COMEDI_SUBD_PWM: Pulse-Width Modulation output.
+ */
+enum comedi_subdevice_type {
+ COMEDI_SUBD_UNUSED,
+ COMEDI_SUBD_AI,
+ COMEDI_SUBD_AO,
+ COMEDI_SUBD_DI,
+ COMEDI_SUBD_DO,
+ COMEDI_SUBD_DIO,
+ COMEDI_SUBD_COUNTER,
+ COMEDI_SUBD_TIMER,
+ COMEDI_SUBD_MEMORY,
+ COMEDI_SUBD_CALIB,
+ COMEDI_SUBD_PROC,
+ COMEDI_SUBD_SERIAL,
+ COMEDI_SUBD_PWM
+};
+
+/* configuration instructions */
+
+/**
+ * enum comedi_io_direction - COMEDI I/O directions
+ * @COMEDI_INPUT: Input.
+ * @COMEDI_OUTPUT: Output.
+ * @COMEDI_OPENDRAIN: Open-drain (or open-collector) output.
+ *
+ * These are used by the %INSN_CONFIG_DIO_QUERY configuration instruction to
+ * report a direction. They may also be used in other places where a direction
+ * needs to be specified.
+ */
+enum comedi_io_direction {
+ COMEDI_INPUT = 0,
+ COMEDI_OUTPUT = 1,
+ COMEDI_OPENDRAIN = 2
+};
+
+/**
+ * enum configuration_ids - COMEDI configuration instruction codes
+ * @INSN_CONFIG_DIO_INPUT: Configure digital I/O as input.
+ * @INSN_CONFIG_DIO_OUTPUT: Configure digital I/O as output.
+ * @INSN_CONFIG_DIO_OPENDRAIN: Configure digital I/O as open-drain (or open
+ * collector) output.
+ * @INSN_CONFIG_ANALOG_TRIG: Configure analog trigger.
+ * @INSN_CONFIG_ALT_SOURCE: Configure alternate input source.
+ * @INSN_CONFIG_DIGITAL_TRIG: Configure digital trigger.
+ * @INSN_CONFIG_BLOCK_SIZE: Configure block size for DMA transfers.
+ * @INSN_CONFIG_TIMER_1: Configure divisor for external clock.
+ * @INSN_CONFIG_FILTER: Configure a filter.
+ * @INSN_CONFIG_CHANGE_NOTIFY: Configure change notification for digital
+ * inputs. (New drivers should use
+ * %INSN_CONFIG_DIGITAL_TRIG instead.)
+ * @INSN_CONFIG_SERIAL_CLOCK: Configure clock for serial I/O.
+ * @INSN_CONFIG_BIDIRECTIONAL_DATA: Send and receive byte over serial I/O.
+ * @INSN_CONFIG_DIO_QUERY: Query direction of digital I/O channel.
+ * @INSN_CONFIG_PWM_OUTPUT: Configure pulse-width modulator output.
+ * @INSN_CONFIG_GET_PWM_OUTPUT: Get pulse-width modulator output configuration.
+ * @INSN_CONFIG_ARM: Arm a subdevice or channel.
+ * @INSN_CONFIG_DISARM: Disarm a subdevice or channel.
+ * @INSN_CONFIG_GET_COUNTER_STATUS: Get counter status.
+ * @INSN_CONFIG_RESET: Reset a subdevice or channel.
+ * @INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR: Configure counter/timer as
+ * single pulse generator.
+ * @INSN_CONFIG_GPCT_PULSE_TRAIN_GENERATOR: Configure counter/timer as
+ * pulse train generator.
+ * @INSN_CONFIG_GPCT_QUADRATURE_ENCODER: Configure counter as a quadrature
+ * encoder.
+ * @INSN_CONFIG_SET_GATE_SRC: Set counter/timer gate source.
+ * @INSN_CONFIG_GET_GATE_SRC: Get counter/timer gate source.
+ * @INSN_CONFIG_SET_CLOCK_SRC: Set counter/timer master clock source.
+ * @INSN_CONFIG_GET_CLOCK_SRC: Get counter/timer master clock source.
+ * @INSN_CONFIG_SET_OTHER_SRC: Set counter/timer "other" source.
+ * @INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE: Get size (in bytes) of subdevice's
+ * on-board FIFOs used during streaming
+ * input/output.
+ * @INSN_CONFIG_SET_COUNTER_MODE: Set counter/timer mode.
+ * @INSN_CONFIG_8254_SET_MODE: (Deprecated) Same as
+ * %INSN_CONFIG_SET_COUNTER_MODE.
+ * @INSN_CONFIG_8254_READ_STATUS: Read status of 8254 counter channel.
+ * @INSN_CONFIG_SET_ROUTING: Set routing for a channel.
+ * @INSN_CONFIG_GET_ROUTING: Get routing for a channel.
+ * @INSN_CONFIG_PWM_SET_PERIOD: Set PWM period in nanoseconds.
+ * @INSN_CONFIG_PWM_GET_PERIOD: Get PWM period in nanoseconds.
+ * @INSN_CONFIG_GET_PWM_STATUS: Get PWM status.
+ * @INSN_CONFIG_PWM_SET_H_BRIDGE: Set PWM H bridge duty cycle and polarity for
+ * a relay simultaneously.
+ * @INSN_CONFIG_PWM_GET_H_BRIDGE: Get PWM H bridge duty cycle and polarity.
+ * @INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS: Get the hardware timing restraints,
+ * regardless of trigger sources.
+ */
+enum configuration_ids {
+ INSN_CONFIG_DIO_INPUT = COMEDI_INPUT,
+ INSN_CONFIG_DIO_OUTPUT = COMEDI_OUTPUT,
+ INSN_CONFIG_DIO_OPENDRAIN = COMEDI_OPENDRAIN,
+ INSN_CONFIG_ANALOG_TRIG = 16,
+/* INSN_CONFIG_WAVEFORM = 17, */
+/* INSN_CONFIG_TRIG = 18, */
+/* INSN_CONFIG_COUNTER = 19, */
+ INSN_CONFIG_ALT_SOURCE = 20,
+ INSN_CONFIG_DIGITAL_TRIG = 21,
+ INSN_CONFIG_BLOCK_SIZE = 22,
+ INSN_CONFIG_TIMER_1 = 23,
+ INSN_CONFIG_FILTER = 24,
+ INSN_CONFIG_CHANGE_NOTIFY = 25,
+
+ INSN_CONFIG_SERIAL_CLOCK = 26, /*ALPHA*/
+ INSN_CONFIG_BIDIRECTIONAL_DATA = 27,
+ INSN_CONFIG_DIO_QUERY = 28,
+ INSN_CONFIG_PWM_OUTPUT = 29,
+ INSN_CONFIG_GET_PWM_OUTPUT = 30,
+ INSN_CONFIG_ARM = 31,
+ INSN_CONFIG_DISARM = 32,
+ INSN_CONFIG_GET_COUNTER_STATUS = 33,
+ INSN_CONFIG_RESET = 34,
+ INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR = 1001,
+ INSN_CONFIG_GPCT_PULSE_TRAIN_GENERATOR = 1002,
+ INSN_CONFIG_GPCT_QUADRATURE_ENCODER = 1003,
+ INSN_CONFIG_SET_GATE_SRC = 2001,
+ INSN_CONFIG_GET_GATE_SRC = 2002,
+ INSN_CONFIG_SET_CLOCK_SRC = 2003,
+ INSN_CONFIG_GET_CLOCK_SRC = 2004,
+ INSN_CONFIG_SET_OTHER_SRC = 2005,
+ INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE = 2006,
+ INSN_CONFIG_SET_COUNTER_MODE = 4097,
+ INSN_CONFIG_8254_SET_MODE = INSN_CONFIG_SET_COUNTER_MODE,
+ INSN_CONFIG_8254_READ_STATUS = 4098,
+ INSN_CONFIG_SET_ROUTING = 4099,
+ INSN_CONFIG_GET_ROUTING = 4109,
+ INSN_CONFIG_PWM_SET_PERIOD = 5000,
+ INSN_CONFIG_PWM_GET_PERIOD = 5001,
+ INSN_CONFIG_GET_PWM_STATUS = 5002,
+ INSN_CONFIG_PWM_SET_H_BRIDGE = 5003,
+ INSN_CONFIG_PWM_GET_H_BRIDGE = 5004,
+ INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS = 5005,
+};
+
+/**
+ * enum device_configuration_ids - COMEDI configuration instruction codes global
+ * to an entire device.
+ * @INSN_DEVICE_CONFIG_TEST_ROUTE: Validate the possibility of a
+ * globally-named route
+ * @INSN_DEVICE_CONFIG_CONNECT_ROUTE: Connect a globally-named route
+ * @INSN_DEVICE_CONFIG_DISCONNECT_ROUTE:Disconnect a globally-named route
+ * @INSN_DEVICE_CONFIG_GET_ROUTES: Get a list of all globally-named routes
+ * that are valid for a particular device.
+ */
+enum device_config_route_ids {
+ INSN_DEVICE_CONFIG_TEST_ROUTE = 0,
+ INSN_DEVICE_CONFIG_CONNECT_ROUTE = 1,
+ INSN_DEVICE_CONFIG_DISCONNECT_ROUTE = 2,
+ INSN_DEVICE_CONFIG_GET_ROUTES = 3,
+};
+
+/**
+ * enum comedi_digital_trig_op - operations for configuring a digital trigger
+ * @COMEDI_DIGITAL_TRIG_DISABLE: Return digital trigger to its default,
+ * inactive, unconfigured state.
+ * @COMEDI_DIGITAL_TRIG_ENABLE_EDGES: Set rising and/or falling edge inputs
+ * that each can fire the trigger.
+ * @COMEDI_DIGITAL_TRIG_ENABLE_LEVELS: Set a combination of high and/or low
+ * level inputs that can fire the trigger.
+ *
+ * These are used with the %INSN_CONFIG_DIGITAL_TRIG configuration instruction.
+ * The data for the configuration instruction is as follows...
+ *
+ * data[%0] = %INSN_CONFIG_DIGITAL_TRIG
+ *
+ * data[%1] = trigger ID
+ *
+ * data[%2] = configuration operation
+ *
+ * data[%3] = configuration parameter 1
+ *
+ * data[%4] = configuration parameter 2
+ *
+ * data[%5] = configuration parameter 3
+ *
+ * The trigger ID (data[%1]) is used to differentiate multiple digital triggers
+ * belonging to the same subdevice. The configuration operation (data[%2]) is
+ * one of the enum comedi_digital_trig_op values. The configuration
+ * parameters (data[%3], data[%4], and data[%5]) depend on the operation; they
+ * are not used with %COMEDI_DIGITAL_TRIG_DISABLE.
+ *
+ * For %COMEDI_DIGITAL_TRIG_ENABLE_EDGES and %COMEDI_DIGITAL_TRIG_ENABLE_LEVELS,
+ * configuration parameter 1 (data[%3]) contains a "left-shift" value that
+ * specifies the input corresponding to bit 0 of configuration parameters 2
+ * and 3. This is useful if the trigger has more than 32 inputs.
+ *
+ * For %COMEDI_DIGITAL_TRIG_ENABLE_EDGES, configuration parameter 2 (data[%4])
+ * specifies which of up to 32 inputs have rising-edge sensitivity, and
+ * configuration parameter 3 (data[%5]) specifies which of up to 32 inputs
+ * have falling-edge sensitivity that can fire the trigger.
+ *
+ * For %COMEDI_DIGITAL_TRIG_ENABLE_LEVELS, configuration parameter 2 (data[%4])
+ * specifies which of up to 32 inputs must be at a high level, and
+ * configuration parameter 3 (data[%5]) specifies which of up to 32 inputs
+ * must be at a low level for the trigger to fire.
+ *
+ * Some sequences of %INSN_CONFIG_DIGITAL_TRIG instructions may have a (partly)
+ * accumulative effect, depending on the low-level driver. This is useful
+ * when setting up a trigger that has more than 32 inputs, or has a combination
+ * of edge- and level-triggered inputs.
+ */
+enum comedi_digital_trig_op {
+ COMEDI_DIGITAL_TRIG_DISABLE = 0,
+ COMEDI_DIGITAL_TRIG_ENABLE_EDGES = 1,
+ COMEDI_DIGITAL_TRIG_ENABLE_LEVELS = 2
+};
+
+/**
+ * enum comedi_support_level - support level for a COMEDI feature
+ * @COMEDI_UNKNOWN_SUPPORT: Unspecified support for feature.
+ * @COMEDI_SUPPORTED: Feature is supported.
+ * @COMEDI_UNSUPPORTED: Feature is unsupported.
+ */
+enum comedi_support_level {
+ COMEDI_UNKNOWN_SUPPORT = 0,
+ COMEDI_SUPPORTED,
+ COMEDI_UNSUPPORTED
+};
+
+/**
+ * enum comedi_counter_status_flags - counter status bits
+ * @COMEDI_COUNTER_ARMED: Counter is armed.
+ * @COMEDI_COUNTER_COUNTING: Counter is counting.
+ * @COMEDI_COUNTER_TERMINAL_COUNT: Counter reached terminal count.
+ *
+ * These bitwise values are used by the %INSN_CONFIG_GET_COUNTER_STATUS
+ * configuration instruction to report the status of a counter.
+ */
+enum comedi_counter_status_flags {
+ COMEDI_COUNTER_ARMED = 0x1,
+ COMEDI_COUNTER_COUNTING = 0x2,
+ COMEDI_COUNTER_TERMINAL_COUNT = 0x4,
+};
+
+/* ioctls */
+
+#define CIO 'd'
+#define COMEDI_DEVCONFIG _IOW(CIO, 0, struct comedi_devconfig)
+#define COMEDI_DEVINFO _IOR(CIO, 1, struct comedi_devinfo)
+#define COMEDI_SUBDINFO _IOR(CIO, 2, struct comedi_subdinfo)
+#define COMEDI_CHANINFO _IOR(CIO, 3, struct comedi_chaninfo)
+/* _IOWR(CIO, 4, ...) is reserved */
+#define COMEDI_LOCK _IO(CIO, 5)
+#define COMEDI_UNLOCK _IO(CIO, 6)
+#define COMEDI_CANCEL _IO(CIO, 7)
+#define COMEDI_RANGEINFO _IOR(CIO, 8, struct comedi_rangeinfo)
+#define COMEDI_CMD _IOR(CIO, 9, struct comedi_cmd)
+#define COMEDI_CMDTEST _IOR(CIO, 10, struct comedi_cmd)
+#define COMEDI_INSNLIST _IOR(CIO, 11, struct comedi_insnlist)
+#define COMEDI_INSN _IOR(CIO, 12, struct comedi_insn)
+#define COMEDI_BUFCONFIG _IOR(CIO, 13, struct comedi_bufconfig)
+#define COMEDI_BUFINFO _IOWR(CIO, 14, struct comedi_bufinfo)
+#define COMEDI_POLL _IO(CIO, 15)
+#define COMEDI_SETRSUBD _IO(CIO, 16)
+#define COMEDI_SETWSUBD _IO(CIO, 17)
+
+/* structures */
+
+/**
+ * struct comedi_insn - COMEDI instruction
+ * @insn: COMEDI instruction type (%INSN_xxx).
+ * @n: Length of @data[].
+ * @data: Pointer to data array operated on by the instruction.
+ * @subdev: Subdevice index.
+ * @chanspec: A packed "chanspec" value consisting of channel number,
+ * analog range index, analog reference type, and flags.
+ * @unused: Reserved for future use.
+ *
+ * This is used with the %COMEDI_INSN ioctl, and indirectly with the
+ * %COMEDI_INSNLIST ioctl.
+ */
+struct comedi_insn {
+ unsigned int insn;
+ unsigned int n;
+ unsigned int __user *data;
+ unsigned int subdev;
+ unsigned int chanspec;
+ unsigned int unused[3];
+};
+
+/**
+ * struct comedi_insnlist - list of COMEDI instructions
+ * @n_insns: Number of COMEDI instructions.
+ * @insns: Pointer to array COMEDI instructions.
+ *
+ * This is used with the %COMEDI_INSNLIST ioctl.
+ */
+struct comedi_insnlist {
+ unsigned int n_insns;
+ struct comedi_insn __user *insns;
+};
+
+/**
+ * struct comedi_cmd - COMEDI asynchronous acquisition command details
+ * @subdev: Subdevice index.
+ * @flags: Command flags (%CMDF_xxx).
+ * @start_src: "Start acquisition" trigger source (%TRIG_xxx).
+ * @start_arg: "Start acquisition" trigger argument.
+ * @scan_begin_src: "Scan begin" trigger source.
+ * @scan_begin_arg: "Scan begin" trigger argument.
+ * @convert_src: "Convert" trigger source.
+ * @convert_arg: "Convert" trigger argument.
+ * @scan_end_src: "Scan end" trigger source.
+ * @scan_end_arg: "Scan end" trigger argument.
+ * @stop_src: "Stop acquisition" trigger source.
+ * @stop_arg: "Stop acquisition" trigger argument.
+ * @chanlist: Pointer to array of "chanspec" values, containing a
+ * sequence of channel numbers packed with analog range
+ * index, etc.
+ * @chanlist_len: Number of channels in sequence.
+ * @data: Pointer to miscellaneous set-up data (not used).
+ * @data_len: Length of miscellaneous set-up data.
+ *
+ * This is used with the %COMEDI_CMD or %COMEDI_CMDTEST ioctl to set-up
+ * or validate an asynchronous acquisition command. The ioctl may modify
+ * the &struct comedi_cmd and copy it back to the caller.
+ *
+ * Optional command @flags values that can be ORed together...
+ *
+ * %CMDF_BOGUS - makes %COMEDI_CMD ioctl return error %EAGAIN instead of
+ * starting the command.
+ *
+ * %CMDF_PRIORITY - requests "hard real-time" processing (which is not
+ * supported in this version of COMEDI).
+ *
+ * %CMDF_WAKE_EOS - requests the command makes data available for reading
+ * after every "scan" period.
+ *
+ * %CMDF_WRITE - marks the command as being in the "write" (to device)
+ * direction. This does not need to be specified by the caller unless the
+ * subdevice supports commands in either direction.
+ *
+ * %CMDF_RAWDATA - prevents the command from "munging" the data between the
+ * COMEDI sample format and the raw hardware sample format.
+ *
+ * %CMDF_ROUND_NEAREST - requests timing periods to be rounded to nearest
+ * supported values.
+ *
+ * %CMDF_ROUND_DOWN - requests timing periods to be rounded down to supported
+ * values (frequencies rounded up).
+ *
+ * %CMDF_ROUND_UP - requests timing periods to be rounded up to supported
+ * values (frequencies rounded down).
+ *
+ * Trigger source values for @start_src, @scan_begin_src, @convert_src,
+ * @scan_end_src, and @stop_src...
+ *
+ * %TRIG_ANY - "all ones" value used to test which trigger sources are
+ * supported.
+ *
+ * %TRIG_INVALID - "all zeroes" value used to indicate that all requested
+ * trigger sources are invalid.
+ *
+ * %TRIG_NONE - never trigger (often used as a @stop_src value).
+ *
+ * %TRIG_NOW - trigger after '_arg' nanoseconds.
+ *
+ * %TRIG_FOLLOW - trigger follows another event.
+ *
+ * %TRIG_TIMER - trigger every '_arg' nanoseconds.
+ *
+ * %TRIG_COUNT - trigger when count '_arg' is reached.
+ *
+ * %TRIG_EXT - trigger on external signal specified by '_arg'.
+ *
+ * %TRIG_INT - trigger on internal, software trigger specified by '_arg'.
+ *
+ * %TRIG_OTHER - trigger on other, driver-defined signal specified by '_arg'.
+ */
+struct comedi_cmd {
+ unsigned int subdev;
+ unsigned int flags;
+
+ unsigned int start_src;
+ unsigned int start_arg;
+
+ unsigned int scan_begin_src;
+ unsigned int scan_begin_arg;
+
+ unsigned int convert_src;
+ unsigned int convert_arg;
+
+ unsigned int scan_end_src;
+ unsigned int scan_end_arg;
+
+ unsigned int stop_src;
+ unsigned int stop_arg;
+
+ unsigned int *chanlist;
+ unsigned int chanlist_len;
+
+ short __user *data;
+ unsigned int data_len;
+};
+
+/**
+ * struct comedi_chaninfo - used to retrieve per-channel information
+ * @subdev: Subdevice index.
+ * @maxdata_list: Optional pointer to per-channel maximum data values.
+ * @flaglist: Optional pointer to per-channel flags.
+ * @rangelist: Optional pointer to per-channel range types.
+ * @unused: Reserved for future use.
+ *
+ * This is used with the %COMEDI_CHANINFO ioctl to get per-channel information
+ * for the subdevice. Use of this requires knowledge of the number of channels
+ * and subdevice flags obtained using the %COMEDI_SUBDINFO ioctl.
+ *
+ * The @maxdata_list member must be %NULL unless the %SDF_MAXDATA subdevice
+ * flag is set. The @flaglist member must be %NULL unless the %SDF_FLAGS
+ * subdevice flag is set. The @rangelist member must be %NULL unless the
+ * %SDF_RANGETYPE subdevice flag is set. Otherwise, the arrays they point to
+ * must be at least as long as the number of channels.
+ */
+struct comedi_chaninfo {
+ unsigned int subdev;
+ unsigned int __user *maxdata_list;
+ unsigned int __user *flaglist;
+ unsigned int __user *rangelist;
+ unsigned int unused[4];
+};
+
+/**
+ * struct comedi_rangeinfo - used to retrieve the range table for a channel
+ * @range_type: Encodes subdevice index (bits 27:24), channel index
+ * (bits 23:16) and range table length (bits 15:0).
+ * @range_ptr: Pointer to array of @struct comedi_krange to be filled
+ * in with the range table for the channel or subdevice.
+ *
+ * This is used with the %COMEDI_RANGEINFO ioctl to retrieve the range table
+ * for a specific channel (if the subdevice has the %SDF_RANGETYPE flag set to
+ * indicate that the range table depends on the channel), or for the subdevice
+ * as a whole (if the %SDF_RANGETYPE flag is clear, indicating the range table
+ * is shared by all channels).
+ *
+ * The @range_type value is an input to the ioctl and comes from a previous
+ * use of the %COMEDI_SUBDINFO ioctl (if the %SDF_RANGETYPE flag is clear),
+ * or the %COMEDI_CHANINFO ioctl (if the %SDF_RANGETYPE flag is set).
+ */
+struct comedi_rangeinfo {
+ unsigned int range_type;
+ void __user *range_ptr;
+};
+
+/**
+ * struct comedi_krange - describes a range in a range table
+ * @min: Minimum value in millionths (1e-6) of a unit.
+ * @max: Maximum value in millionths (1e-6) of a unit.
+ * @flags: Indicates the units (in bits 7:0) OR'ed with optional flags.
+ *
+ * A range table is associated with a single channel, or with all channels in a
+ * subdevice, and a list of one or more ranges. A %struct comedi_krange
+ * describes the physical range of units for one of those ranges. Sample
+ * values in COMEDI are unsigned from %0 up to some 'maxdata' value. The
+ * mapping from sample values to physical units is assumed to be nomimally
+ * linear (for the purpose of describing the range), with sample value %0
+ * mapping to @min, and the 'maxdata' sample value mapping to @max.
+ *
+ * The currently defined units are %UNIT_volt (%0), %UNIT_mA (%1), and
+ * %UNIT_none (%2). The @min and @max values are the physical range multiplied
+ * by 1e6, so a @max value of %1000000 (with %UNIT_volt) represents a maximal
+ * value of 1 volt.
+ *
+ * The only defined flag value is %RF_EXTERNAL (%0x100), indicating that the
+ * range needs to be multiplied by an external reference.
+ */
+struct comedi_krange {
+ int min;
+ int max;
+ unsigned int flags;
+};
+
+/**
+ * struct comedi_subdinfo - used to retrieve information about a subdevice
+ * @type: Type of subdevice from &enum comedi_subdevice_type.
+ * @n_chan: Number of channels the subdevice supports.
+ * @subd_flags: A mixture of static and dynamic flags describing
+ * aspects of the subdevice and its current state.
+ * @timer_type: Timer type. Always set to %5 ("nanosecond timer").
+ * @len_chanlist: Maximum length of a channel list if the subdevice
+ * supports asynchronous acquisition commands.
+ * @maxdata: Maximum sample value for all channels if the
+ * %SDF_MAXDATA subdevice flag is clear.
+ * @flags: Channel flags for all channels if the %SDF_FLAGS
+ * subdevice flag is clear.
+ * @range_type: The range type for all channels if the %SDF_RANGETYPE
+ * subdevice flag is clear. Encodes the subdevice index
+ * (bits 27:24), a dummy channel index %0 (bits 23:16),
+ * and the range table length (bits 15:0).
+ * @settling_time_0: Not used.
+ * @insn_bits_support: Set to %COMEDI_SUPPORTED if the subdevice supports the
+ * %INSN_BITS instruction, or to %COMEDI_UNSUPPORTED if it
+ * does not.
+ * @unused: Reserved for future use.
+ *
+ * This is used with the %COMEDI_SUBDINFO ioctl which copies an array of
+ * &struct comedi_subdinfo back to user space, with one element per subdevice.
+ * Use of this requires knowledge of the number of subdevices obtained from
+ * the %COMEDI_DEVINFO ioctl.
+ *
+ * These are the @subd_flags values that may be ORed together...
+ *
+ * %SDF_BUSY - the subdevice is busy processing an asynchronous command or a
+ * synchronous instruction.
+ *
+ * %SDF_BUSY_OWNER - the subdevice is busy processing an asynchronous
+ * acquisition command started on the current file object (the file object
+ * issuing the %COMEDI_SUBDINFO ioctl).
+ *
+ * %SDF_LOCKED - the subdevice is locked by a %COMEDI_LOCK ioctl.
+ *
+ * %SDF_LOCK_OWNER - the subdevice is locked by a %COMEDI_LOCK ioctl from the
+ * current file object.
+ *
+ * %SDF_MAXDATA - maximum sample values are channel-specific.
+ *
+ * %SDF_FLAGS - channel flags are channel-specific.
+ *
+ * %SDF_RANGETYPE - range types are channel-specific.
+ *
+ * %SDF_PWM_COUNTER - PWM can switch off automatically.
+ *
+ * %SDF_PWM_HBRIDGE - or PWM is signed (H-bridge).
+ *
+ * %SDF_CMD - the subdevice supports asynchronous commands.
+ *
+ * %SDF_SOFT_CALIBRATED - the subdevice uses software calibration.
+ *
+ * %SDF_CMD_WRITE - the subdevice supports asynchronous commands in the output
+ * ("write") direction.
+ *
+ * %SDF_CMD_READ - the subdevice supports asynchronous commands in the input
+ * ("read") direction.
+ *
+ * %SDF_READABLE - the subdevice is readable (e.g. analog input).
+ *
+ * %SDF_WRITABLE (aliased as %SDF_WRITEABLE) - the subdevice is writable (e.g.
+ * analog output).
+ *
+ * %SDF_INTERNAL - the subdevice has no externally visible lines.
+ *
+ * %SDF_GROUND - the subdevice can use ground as an analog reference.
+ *
+ * %SDF_COMMON - the subdevice can use a common analog reference.
+ *
+ * %SDF_DIFF - the subdevice can use differential inputs (or outputs).
+ *
+ * %SDF_OTHER - the subdevice can use some other analog reference.
+ *
+ * %SDF_DITHER - the subdevice can do dithering.
+ *
+ * %SDF_DEGLITCH - the subdevice can do deglitching.
+ *
+ * %SDF_MMAP - this is never set.
+ *
+ * %SDF_RUNNING - an asynchronous command is still running.
+ *
+ * %SDF_LSAMPL - the subdevice uses "long" (32-bit) samples (for asynchronous
+ * command data).
+ *
+ * %SDF_PACKED - the subdevice packs several DIO samples into a single sample
+ * (for asynchronous command data).
+ *
+ * No "channel flags" (@flags) values are currently defined.
+ */
+struct comedi_subdinfo {
+ unsigned int type;
+ unsigned int n_chan;
+ unsigned int subd_flags;
+ unsigned int timer_type;
+ unsigned int len_chanlist;
+ unsigned int maxdata;
+ unsigned int flags;
+ unsigned int range_type;
+ unsigned int settling_time_0;
+ unsigned int insn_bits_support;
+ unsigned int unused[8];
+};
+
+/**
+ * struct comedi_devinfo - used to retrieve information about a COMEDI device
+ * @version_code: COMEDI version code.
+ * @n_subdevs: Number of subdevices the device has.
+ * @driver_name: Null-terminated COMEDI driver name.
+ * @board_name: Null-terminated COMEDI board name.
+ * @read_subdevice: Index of the current "read" subdevice (%-1 if none).
+ * @write_subdevice: Index of the current "write" subdevice (%-1 if none).
+ * @unused: Reserved for future use.
+ *
+ * This is used with the %COMEDI_DEVINFO ioctl to get basic information about
+ * the device.
+ */
+struct comedi_devinfo {
+ unsigned int version_code;
+ unsigned int n_subdevs;
+ char driver_name[COMEDI_NAMELEN];
+ char board_name[COMEDI_NAMELEN];
+ int read_subdevice;
+ int write_subdevice;
+ int unused[30];
+};
+
+/**
+ * struct comedi_devconfig - used to configure a legacy COMEDI device
+ * @board_name: Null-terminated string specifying the type of board
+ * to configure.
+ * @options: An array of integer configuration options.
+ *
+ * This is used with the %COMEDI_DEVCONFIG ioctl to configure a "legacy" COMEDI
+ * device, such as an ISA card. Not all COMEDI drivers support this. Those
+ * that do either expect the specified board name to match one of a list of
+ * names registered with the COMEDI core, or expect the specified board name
+ * to match the COMEDI driver name itself. The configuration options are
+ * handled in a driver-specific manner.
+ */
+struct comedi_devconfig {
+ char board_name[COMEDI_NAMELEN];
+ int options[COMEDI_NDEVCONFOPTS];
+};
+
+/**
+ * struct comedi_bufconfig - used to set or get buffer size for a subdevice
+ * @subdevice: Subdevice index.
+ * @flags: Not used.
+ * @maximum_size: Maximum allowed buffer size.
+ * @size: Buffer size.
+ * @unused: Reserved for future use.
+ *
+ * This is used with the %COMEDI_BUFCONFIG ioctl to get or configure the
+ * maximum buffer size and current buffer size for a COMEDI subdevice that
+ * supports asynchronous commands. If the subdevice does not support
+ * asynchronous commands, @maximum_size and @size are ignored and set to 0.
+ *
+ * On ioctl input, non-zero values of @maximum_size and @size specify a
+ * new maximum size and new current size (in bytes), respectively. These
+ * will by rounded up to a multiple of %PAGE_SIZE. Specifying a new maximum
+ * size requires admin capabilities.
+ *
+ * On ioctl output, @maximum_size and @size and set to the current maximum
+ * buffer size and current buffer size, respectively.
+ */
+struct comedi_bufconfig {
+ unsigned int subdevice;
+ unsigned int flags;
+
+ unsigned int maximum_size;
+ unsigned int size;
+
+ unsigned int unused[4];
+};
+
+/**
+ * struct comedi_bufinfo - used to manipulate buffer position for a subdevice
+ * @subdevice: Subdevice index.
+ * @bytes_read: Specify amount to advance read position for an
+ * asynchronous command in the input ("read") direction.
+ * @buf_write_ptr: Current write position (index) within the buffer.
+ * @buf_read_ptr: Current read position (index) within the buffer.
+ * @buf_write_count: Total amount written, modulo 2^32.
+ * @buf_read_count: Total amount read, modulo 2^32.
+ * @bytes_written: Specify amount to advance write position for an
+ * asynchronous command in the output ("write") direction.
+ * @unused: Reserved for future use.
+ *
+ * This is used with the %COMEDI_BUFINFO ioctl to optionally advance the
+ * current read or write position in an asynchronous acquisition data buffer,
+ * and to get the current read and write positions in the buffer.
+ */
+struct comedi_bufinfo {
+ unsigned int subdevice;
+ unsigned int bytes_read;
+
+ unsigned int buf_write_ptr;
+ unsigned int buf_read_ptr;
+ unsigned int buf_write_count;
+ unsigned int buf_read_count;
+
+ unsigned int bytes_written;
+
+ unsigned int unused[4];
+};
+
+/* range stuff */
+
+#define __RANGE(a, b) ((((a) & 0xffff) << 16) | ((b) & 0xffff))
+
+#define RANGE_OFFSET(a) (((a) >> 16) & 0xffff)
+#define RANGE_LENGTH(b) ((b) & 0xffff)
+
+#define RF_UNIT(flags) ((flags) & 0xff)
+#define RF_EXTERNAL 0x100
+
+#define UNIT_volt 0
+#define UNIT_mA 1
+#define UNIT_none 2
+
+#define COMEDI_MIN_SPEED 0xffffffffu
+
+/**********************************************************/
+/* everything after this line is ALPHA */
+/**********************************************************/
+
+/*
+ * 8254 specific configuration.
+ *
+ * It supports two config commands:
+ *
+ * 0 ID: INSN_CONFIG_SET_COUNTER_MODE
+ * 1 8254 Mode
+ * I8254_MODE0, I8254_MODE1, ..., I8254_MODE5
+ * OR'ed with:
+ * I8254_BCD, I8254_BINARY
+ *
+ * 0 ID: INSN_CONFIG_8254_READ_STATUS
+ * 1 <-- Status byte returned here.
+ * B7 = Output
+ * B6 = NULL Count
+ * B5 - B0 Current mode.
+ */
+
+enum i8254_mode {
+ I8254_MODE0 = (0 << 1), /* Interrupt on terminal count */
+ I8254_MODE1 = (1 << 1), /* Hardware retriggerable one-shot */
+ I8254_MODE2 = (2 << 1), /* Rate generator */
+ I8254_MODE3 = (3 << 1), /* Square wave mode */
+ I8254_MODE4 = (4 << 1), /* Software triggered strobe */
+ /* Hardware triggered strobe (retriggerable) */
+ I8254_MODE5 = (5 << 1),
+ /* Use binary-coded decimal instead of binary (pretty useless) */
+ I8254_BCD = 1,
+ I8254_BINARY = 0
+};
+
+/* *** BEGIN GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */
+
+/*
+ * Common National Instruments Terminal/Signal names.
+ * Some of these have no NI_ prefix as they are useful for non-NI hardware, such
+ * as those that utilize the PXI/RTSI trigger lines.
+ *
+ * NOTE ABOUT THE CHOICE OF NAMES HERE AND THE CAMELSCRIPT:
+ * The choice to use CamelScript and the exact names below is for
+ * maintainability, clarity, similarity to manufacturer's documentation,
+ * _and_ a mitigation for confusion that has plagued the use of these drivers
+ * for years!
+ *
+ * More detail:
+ * There have been significant confusions over the past many years for users
+ * when trying to understand how to connect to/from signals and terminals on
+ * NI hardware using comedi. The major reason for this is that the actual
+ * register values were exposed and required to be used by users. Several
+ * major reasons exist why this caused major confusion for users:
+ * 1) The register values are _NOT_ in user documentation, but rather in
+ * arcane locations, such as a few register programming manuals that are
+ * increasingly hard to find and the NI MHDDK (comments in example code).
+ * There is no one place to find the various valid values of the registers.
+ * 2) The register values are _NOT_ completely consistent. There is no way to
+ * gain any sense of intuition of which values, or even enums one should use
+ * for various registers. There was some attempt in prior use of comedi to
+ * name enums such that a user might know which enums should be used for
+ * varying purposes, but the end-user had to gain a knowledge of register
+ * values to correctly wield this approach.
+ * 3) The names for signals and registers found in the various register level
+ * programming manuals and vendor-provided documentation are _not_ even
+ * close to the same names that are in the end-user documentation.
+ *
+ * Similar, albeit less, confusion plagued NI's previous version of their own
+ * drivers. Earlier than 2003, NI greatly simplified the situation for users
+ * by releasing a new API that abstracted the names of signals/terminals to a
+ * common and intuitive set of names.
+ *
+ * The names below mirror the names chosen and well documented by NI. These
+ * names are exposed to the user via the comedilib user library. By keeping
+ * the names below, in spite of the use of CamelScript, maintenance will be
+ * greatly eased and confusion for users _and_ comedi developers will be
+ * greatly reduced.
+ */
+
+/*
+ * Base of abstracted NI names.
+ * The first 16 bits of *_arg are reserved for channel selection.
+ * Since we only actually need the first 4 or 5 bits for all register values on
+ * NI select registers anyways, we'll identify all values >= (1<<15) as being an
+ * abstracted NI signal/terminal name.
+ * These values are also used/returned by INSN_DEVICE_CONFIG_TEST_ROUTE,
+ * INSN_DEVICE_CONFIG_CONNECT_ROUTE, INSN_DEVICE_CONFIG_DISCONNECT_ROUTE,
+ * and INSN_DEVICE_CONFIG_GET_ROUTES.
+ */
+#define NI_NAMES_BASE 0x8000u
+
+#define _TERM_N(base, n, x) ((base) + ((x) & ((n) - 1)))
+
+/*
+ * not necessarily all allowed 64 PFIs are valid--certainly not for all devices
+ */
+#define NI_PFI(x) _TERM_N(NI_NAMES_BASE, 64, x)
+/* 8 trigger lines by standard, Some devices cannot talk to all eight. */
+#define TRIGGER_LINE(x) _TERM_N(NI_PFI(-1) + 1, 8, x)
+/* 4 RTSI shared MUXes to route signals to/from TRIGGER_LINES on NI hardware */
+#define NI_RTSI_BRD(x) _TERM_N(TRIGGER_LINE(-1) + 1, 4, x)
+
+/* *** Counter/timer names : 8 counters max *** */
+#define NI_MAX_COUNTERS 8
+#define NI_COUNTER_NAMES_BASE (NI_RTSI_BRD(-1) + 1)
+#define NI_CtrSource(x) _TERM_N(NI_COUNTER_NAMES_BASE, NI_MAX_COUNTERS, x)
+/* Gate, Aux, A,B,Z are all treated, at times as gates */
+#define NI_GATES_NAMES_BASE (NI_CtrSource(-1) + 1)
+#define NI_CtrGate(x) _TERM_N(NI_GATES_NAMES_BASE, NI_MAX_COUNTERS, x)
+#define NI_CtrAux(x) _TERM_N(NI_CtrGate(-1) + 1, NI_MAX_COUNTERS, x)
+#define NI_CtrA(x) _TERM_N(NI_CtrAux(-1) + 1, NI_MAX_COUNTERS, x)
+#define NI_CtrB(x) _TERM_N(NI_CtrA(-1) + 1, NI_MAX_COUNTERS, x)
+#define NI_CtrZ(x) _TERM_N(NI_CtrB(-1) + 1, NI_MAX_COUNTERS, x)
+#define NI_GATES_NAMES_MAX NI_CtrZ(-1)
+#define NI_CtrArmStartTrigger(x) _TERM_N(NI_CtrZ(-1) + 1, NI_MAX_COUNTERS, x)
+#define NI_CtrInternalOutput(x) \
+ _TERM_N(NI_CtrArmStartTrigger(-1) + 1, NI_MAX_COUNTERS, x)
+/** external pin(s) labeled conveniently as Ctr<i>Out. */
+#define NI_CtrOut(x) _TERM_N(NI_CtrInternalOutput(-1) + 1, NI_MAX_COUNTERS, x)
+/** For Buffered sampling of ctr -- x series capability. */
+#define NI_CtrSampleClock(x) _TERM_N(NI_CtrOut(-1) + 1, NI_MAX_COUNTERS, x)
+#define NI_COUNTER_NAMES_MAX NI_CtrSampleClock(-1)
+
+enum ni_common_signal_names {
+ /* PXI_Star: this is a non-NI-specific signal */
+ PXI_Star = NI_COUNTER_NAMES_MAX + 1,
+ PXI_Clk10,
+ PXIe_Clk100,
+ NI_AI_SampleClock,
+ NI_AI_SampleClockTimebase,
+ NI_AI_StartTrigger,
+ NI_AI_ReferenceTrigger,
+ NI_AI_ConvertClock,
+ NI_AI_ConvertClockTimebase,
+ NI_AI_PauseTrigger,
+ NI_AI_HoldCompleteEvent,
+ NI_AI_HoldComplete,
+ NI_AI_ExternalMUXClock,
+ NI_AI_STOP, /* pulse signal that occurs when a update is finished(?) */
+ NI_AO_SampleClock,
+ NI_AO_SampleClockTimebase,
+ NI_AO_StartTrigger,
+ NI_AO_PauseTrigger,
+ NI_DI_SampleClock,
+ NI_DI_SampleClockTimebase,
+ NI_DI_StartTrigger,
+ NI_DI_ReferenceTrigger,
+ NI_DI_PauseTrigger,
+ NI_DI_InputBufferFull,
+ NI_DI_ReadyForStartEvent,
+ NI_DI_ReadyForTransferEventBurst,
+ NI_DI_ReadyForTransferEventPipelined,
+ NI_DO_SampleClock,
+ NI_DO_SampleClockTimebase,
+ NI_DO_StartTrigger,
+ NI_DO_PauseTrigger,
+ NI_DO_OutputBufferFull,
+ NI_DO_DataActiveEvent,
+ NI_DO_ReadyForStartEvent,
+ NI_DO_ReadyForTransferEvent,
+ NI_MasterTimebase,
+ NI_20MHzTimebase,
+ NI_80MHzTimebase,
+ NI_100MHzTimebase,
+ NI_200MHzTimebase,
+ NI_100kHzTimebase,
+ NI_10MHzRefClock,
+ NI_FrequencyOutput,
+ NI_ChangeDetectionEvent,
+ NI_AnalogComparisonEvent,
+ NI_WatchdogExpiredEvent,
+ NI_WatchdogExpirationTrigger,
+ NI_SCXI_Trig1,
+ NI_LogicLow,
+ NI_LogicHigh,
+ NI_ExternalStrobe,
+ NI_PFI_DO,
+ NI_CaseGround,
+ /* special internal signal used as variable source for RTSI bus: */
+ NI_RGOUT0,
+
+ /* just a name to make the next more convenient, regardless of above */
+ _NI_NAMES_MAX_PLUS_1,
+ NI_NUM_NAMES = _NI_NAMES_MAX_PLUS_1 - NI_NAMES_BASE,
+};
+
+/* *** END GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */
+
+#define NI_USUAL_PFI_SELECT(x) (((x) < 10) ? (0x1 + (x)) : (0xb + (x)))
+#define NI_USUAL_RTSI_SELECT(x) (((x) < 7) ? (0xb + (x)) : 0x1b)
+
+/*
+ * mode bits for NI general-purpose counters, set with
+ * INSN_CONFIG_SET_COUNTER_MODE
+ */
+#define NI_GPCT_COUNTING_MODE_SHIFT 16
+#define NI_GPCT_INDEX_PHASE_BITSHIFT 20
+#define NI_GPCT_COUNTING_DIRECTION_SHIFT 24
+enum ni_gpct_mode_bits {
+ NI_GPCT_GATE_ON_BOTH_EDGES_BIT = 0x4,
+ NI_GPCT_EDGE_GATE_MODE_MASK = 0x18,
+ NI_GPCT_EDGE_GATE_STARTS_STOPS_BITS = 0x0,
+ NI_GPCT_EDGE_GATE_STOPS_STARTS_BITS = 0x8,
+ NI_GPCT_EDGE_GATE_STARTS_BITS = 0x10,
+ NI_GPCT_EDGE_GATE_NO_STARTS_NO_STOPS_BITS = 0x18,
+ NI_GPCT_STOP_MODE_MASK = 0x60,
+ NI_GPCT_STOP_ON_GATE_BITS = 0x00,
+ NI_GPCT_STOP_ON_GATE_OR_TC_BITS = 0x20,
+ NI_GPCT_STOP_ON_GATE_OR_SECOND_TC_BITS = 0x40,
+ NI_GPCT_LOAD_B_SELECT_BIT = 0x80,
+ NI_GPCT_OUTPUT_MODE_MASK = 0x300,
+ NI_GPCT_OUTPUT_TC_PULSE_BITS = 0x100,
+ NI_GPCT_OUTPUT_TC_TOGGLE_BITS = 0x200,
+ NI_GPCT_OUTPUT_TC_OR_GATE_TOGGLE_BITS = 0x300,
+ NI_GPCT_HARDWARE_DISARM_MASK = 0xc00,
+ NI_GPCT_NO_HARDWARE_DISARM_BITS = 0x000,
+ NI_GPCT_DISARM_AT_TC_BITS = 0x400,
+ NI_GPCT_DISARM_AT_GATE_BITS = 0x800,
+ NI_GPCT_DISARM_AT_TC_OR_GATE_BITS = 0xc00,
+ NI_GPCT_LOADING_ON_TC_BIT = 0x1000,
+ NI_GPCT_LOADING_ON_GATE_BIT = 0x4000,
+ NI_GPCT_COUNTING_MODE_MASK = 0x7 << NI_GPCT_COUNTING_MODE_SHIFT,
+ NI_GPCT_COUNTING_MODE_NORMAL_BITS =
+ 0x0 << NI_GPCT_COUNTING_MODE_SHIFT,
+ NI_GPCT_COUNTING_MODE_QUADRATURE_X1_BITS =
+ 0x1 << NI_GPCT_COUNTING_MODE_SHIFT,
+ NI_GPCT_COUNTING_MODE_QUADRATURE_X2_BITS =
+ 0x2 << NI_GPCT_COUNTING_MODE_SHIFT,
+ NI_GPCT_COUNTING_MODE_QUADRATURE_X4_BITS =
+ 0x3 << NI_GPCT_COUNTING_MODE_SHIFT,
+ NI_GPCT_COUNTING_MODE_TWO_PULSE_BITS =
+ 0x4 << NI_GPCT_COUNTING_MODE_SHIFT,
+ NI_GPCT_COUNTING_MODE_SYNC_SOURCE_BITS =
+ 0x6 << NI_GPCT_COUNTING_MODE_SHIFT,
+ NI_GPCT_INDEX_PHASE_MASK = 0x3 << NI_GPCT_INDEX_PHASE_BITSHIFT,
+ NI_GPCT_INDEX_PHASE_LOW_A_LOW_B_BITS =
+ 0x0 << NI_GPCT_INDEX_PHASE_BITSHIFT,
+ NI_GPCT_INDEX_PHASE_LOW_A_HIGH_B_BITS =
+ 0x1 << NI_GPCT_INDEX_PHASE_BITSHIFT,
+ NI_GPCT_INDEX_PHASE_HIGH_A_LOW_B_BITS =
+ 0x2 << NI_GPCT_INDEX_PHASE_BITSHIFT,
+ NI_GPCT_INDEX_PHASE_HIGH_A_HIGH_B_BITS =
+ 0x3 << NI_GPCT_INDEX_PHASE_BITSHIFT,
+ NI_GPCT_INDEX_ENABLE_BIT = 0x400000,
+ NI_GPCT_COUNTING_DIRECTION_MASK =
+ 0x3 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
+ NI_GPCT_COUNTING_DIRECTION_DOWN_BITS =
+ 0x00 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
+ NI_GPCT_COUNTING_DIRECTION_UP_BITS =
+ 0x1 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
+ NI_GPCT_COUNTING_DIRECTION_HW_UP_DOWN_BITS =
+ 0x2 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
+ NI_GPCT_COUNTING_DIRECTION_HW_GATE_BITS =
+ 0x3 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
+ NI_GPCT_RELOAD_SOURCE_MASK = 0xc000000,
+ NI_GPCT_RELOAD_SOURCE_FIXED_BITS = 0x0,
+ NI_GPCT_RELOAD_SOURCE_SWITCHING_BITS = 0x4000000,
+ NI_GPCT_RELOAD_SOURCE_GATE_SELECT_BITS = 0x8000000,
+ NI_GPCT_OR_GATE_BIT = 0x10000000,
+ NI_GPCT_INVERT_OUTPUT_BIT = 0x20000000
+};
+
+/*
+ * Bits for setting a clock source with
+ * INSN_CONFIG_SET_CLOCK_SRC when using NI general-purpose counters.
+ */
+enum ni_gpct_clock_source_bits {
+ NI_GPCT_CLOCK_SRC_SELECT_MASK = 0x3f,
+ NI_GPCT_TIMEBASE_1_CLOCK_SRC_BITS = 0x0,
+ NI_GPCT_TIMEBASE_2_CLOCK_SRC_BITS = 0x1,
+ NI_GPCT_TIMEBASE_3_CLOCK_SRC_BITS = 0x2,
+ NI_GPCT_LOGIC_LOW_CLOCK_SRC_BITS = 0x3,
+ NI_GPCT_NEXT_GATE_CLOCK_SRC_BITS = 0x4,
+ NI_GPCT_NEXT_TC_CLOCK_SRC_BITS = 0x5,
+ /* NI 660x-specific */
+ NI_GPCT_SOURCE_PIN_i_CLOCK_SRC_BITS = 0x6,
+ NI_GPCT_PXI10_CLOCK_SRC_BITS = 0x7,
+ NI_GPCT_PXI_STAR_TRIGGER_CLOCK_SRC_BITS = 0x8,
+ NI_GPCT_ANALOG_TRIGGER_OUT_CLOCK_SRC_BITS = 0x9,
+ NI_GPCT_PRESCALE_MODE_CLOCK_SRC_MASK = 0x30000000,
+ NI_GPCT_NO_PRESCALE_CLOCK_SRC_BITS = 0x0,
+ /* divide source by 2 */
+ NI_GPCT_PRESCALE_X2_CLOCK_SRC_BITS = 0x10000000,
+ /* divide source by 8 */
+ NI_GPCT_PRESCALE_X8_CLOCK_SRC_BITS = 0x20000000,
+ NI_GPCT_INVERT_CLOCK_SRC_BIT = 0x80000000
+};
+
+/* NI 660x-specific */
+#define NI_GPCT_SOURCE_PIN_CLOCK_SRC_BITS(x) (0x10 + (x))
+
+#define NI_GPCT_RTSI_CLOCK_SRC_BITS(x) (0x18 + (x))
+
+/* no pfi on NI 660x */
+#define NI_GPCT_PFI_CLOCK_SRC_BITS(x) (0x20 + (x))
+
+/*
+ * Possibilities for setting a gate source with
+ * INSN_CONFIG_SET_GATE_SRC when using NI general-purpose counters.
+ * May be bitwise-or'd with CR_EDGE or CR_INVERT.
+ */
+enum ni_gpct_gate_select {
+ /* m-series gates */
+ NI_GPCT_TIMESTAMP_MUX_GATE_SELECT = 0x0,
+ NI_GPCT_AI_START2_GATE_SELECT = 0x12,
+ NI_GPCT_PXI_STAR_TRIGGER_GATE_SELECT = 0x13,
+ NI_GPCT_NEXT_OUT_GATE_SELECT = 0x14,
+ NI_GPCT_AI_START1_GATE_SELECT = 0x1c,
+ NI_GPCT_NEXT_SOURCE_GATE_SELECT = 0x1d,
+ NI_GPCT_ANALOG_TRIGGER_OUT_GATE_SELECT = 0x1e,
+ NI_GPCT_LOGIC_LOW_GATE_SELECT = 0x1f,
+ /* more gates for 660x */
+ NI_GPCT_SOURCE_PIN_i_GATE_SELECT = 0x100,
+ NI_GPCT_GATE_PIN_i_GATE_SELECT = 0x101,
+ /* more gates for 660x "second gate" */
+ NI_GPCT_UP_DOWN_PIN_i_GATE_SELECT = 0x201,
+ NI_GPCT_SELECTED_GATE_GATE_SELECT = 0x21e,
+ /*
+ * m-series "second gate" sources are unknown,
+ * we should add them here with an offset of 0x300 when
+ * known.
+ */
+ NI_GPCT_DISABLED_GATE_SELECT = 0x8000,
+};
+
+#define NI_GPCT_GATE_PIN_GATE_SELECT(x) (0x102 + (x))
+#define NI_GPCT_RTSI_GATE_SELECT(x) NI_USUAL_RTSI_SELECT(x)
+#define NI_GPCT_PFI_GATE_SELECT(x) NI_USUAL_PFI_SELECT(x)
+#define NI_GPCT_UP_DOWN_PIN_GATE_SELECT(x) (0x202 + (x))
+
+/*
+ * Possibilities for setting a source with
+ * INSN_CONFIG_SET_OTHER_SRC when using NI general-purpose counters.
+ */
+enum ni_gpct_other_index {
+ NI_GPCT_SOURCE_ENCODER_A,
+ NI_GPCT_SOURCE_ENCODER_B,
+ NI_GPCT_SOURCE_ENCODER_Z
+};
+
+enum ni_gpct_other_select {
+ /* m-series gates */
+ /* Still unknown, probably only need NI_GPCT_PFI_OTHER_SELECT */
+ NI_GPCT_DISABLED_OTHER_SELECT = 0x8000,
+};
+
+#define NI_GPCT_PFI_OTHER_SELECT(x) NI_USUAL_PFI_SELECT(x)
+
+/*
+ * start sources for ni general-purpose counters for use with
+ * INSN_CONFIG_ARM
+ */
+enum ni_gpct_arm_source {
+ NI_GPCT_ARM_IMMEDIATE = 0x0,
+ /*
+ * Start both the counter and the adjacent paired counter simultaneously
+ */
+ NI_GPCT_ARM_PAIRED_IMMEDIATE = 0x1,
+ /*
+ * If the NI_GPCT_HW_ARM bit is set, we will pass the least significant
+ * bits (3 bits for 660x or 5 bits for m-series) through to the
+ * hardware. To select a hardware trigger, pass the appropriate select
+ * bit, e.g.,
+ * NI_GPCT_HW_ARM | NI_GPCT_AI_START1_GATE_SELECT or
+ * NI_GPCT_HW_ARM | NI_GPCT_PFI_GATE_SELECT(pfi_number)
+ */
+ NI_GPCT_HW_ARM = 0x1000,
+ NI_GPCT_ARM_UNKNOWN = NI_GPCT_HW_ARM, /* for backward compatibility */
+};
+
+/* digital filtering options for ni 660x for use with INSN_CONFIG_FILTER. */
+enum ni_gpct_filter_select {
+ NI_GPCT_FILTER_OFF = 0x0,
+ NI_GPCT_FILTER_TIMEBASE_3_SYNC = 0x1,
+ NI_GPCT_FILTER_100x_TIMEBASE_1 = 0x2,
+ NI_GPCT_FILTER_20x_TIMEBASE_1 = 0x3,
+ NI_GPCT_FILTER_10x_TIMEBASE_1 = 0x4,
+ NI_GPCT_FILTER_2x_TIMEBASE_1 = 0x5,
+ NI_GPCT_FILTER_2x_TIMEBASE_3 = 0x6
+};
+
+/*
+ * PFI digital filtering options for ni m-series for use with
+ * INSN_CONFIG_FILTER.
+ */
+enum ni_pfi_filter_select {
+ NI_PFI_FILTER_OFF = 0x0,
+ NI_PFI_FILTER_125ns = 0x1,
+ NI_PFI_FILTER_6425ns = 0x2,
+ NI_PFI_FILTER_2550us = 0x3
+};
+
+/* master clock sources for ni mio boards and INSN_CONFIG_SET_CLOCK_SRC */
+enum ni_mio_clock_source {
+ NI_MIO_INTERNAL_CLOCK = 0,
+ /*
+ * Doesn't work for m-series, use NI_MIO_PLL_RTSI_CLOCK()
+ * the NI_MIO_PLL_* sources are m-series only
+ */
+ NI_MIO_RTSI_CLOCK = 1,
+ NI_MIO_PLL_PXI_STAR_TRIGGER_CLOCK = 2,
+ NI_MIO_PLL_PXI10_CLOCK = 3,
+ NI_MIO_PLL_RTSI0_CLOCK = 4
+};
+
+#define NI_MIO_PLL_RTSI_CLOCK(x) (NI_MIO_PLL_RTSI0_CLOCK + (x))
+
+/*
+ * Signals which can be routed to an NI RTSI pin with INSN_CONFIG_SET_ROUTING.
+ * The numbers assigned are not arbitrary, they correspond to the bits required
+ * to program the board.
+ */
+enum ni_rtsi_routing {
+ NI_RTSI_OUTPUT_ADR_START1 = 0,
+ NI_RTSI_OUTPUT_ADR_START2 = 1,
+ NI_RTSI_OUTPUT_SCLKG = 2,
+ NI_RTSI_OUTPUT_DACUPDN = 3,
+ NI_RTSI_OUTPUT_DA_START1 = 4,
+ NI_RTSI_OUTPUT_G_SRC0 = 5,
+ NI_RTSI_OUTPUT_G_GATE0 = 6,
+ NI_RTSI_OUTPUT_RGOUT0 = 7,
+ NI_RTSI_OUTPUT_RTSI_BRD_0 = 8,
+ /* Pre-m-series always have RTSI clock on line 7 */
+ NI_RTSI_OUTPUT_RTSI_OSC = 12
+};
+
+#define NI_RTSI_OUTPUT_RTSI_BRD(x) (NI_RTSI_OUTPUT_RTSI_BRD_0 + (x))
+
+/*
+ * Signals which can be routed to an NI PFI pin on an m-series board with
+ * INSN_CONFIG_SET_ROUTING. These numbers are also returned by
+ * INSN_CONFIG_GET_ROUTING on pre-m-series boards, even though their routing
+ * cannot be changed. The numbers assigned are not arbitrary, they correspond
+ * to the bits required to program the board.
+ */
+enum ni_pfi_routing {
+ NI_PFI_OUTPUT_PFI_DEFAULT = 0,
+ NI_PFI_OUTPUT_AI_START1 = 1,
+ NI_PFI_OUTPUT_AI_START2 = 2,
+ NI_PFI_OUTPUT_AI_CONVERT = 3,
+ NI_PFI_OUTPUT_G_SRC1 = 4,
+ NI_PFI_OUTPUT_G_GATE1 = 5,
+ NI_PFI_OUTPUT_AO_UPDATE_N = 6,
+ NI_PFI_OUTPUT_AO_START1 = 7,
+ NI_PFI_OUTPUT_AI_START_PULSE = 8,
+ NI_PFI_OUTPUT_G_SRC0 = 9,
+ NI_PFI_OUTPUT_G_GATE0 = 10,
+ NI_PFI_OUTPUT_EXT_STROBE = 11,
+ NI_PFI_OUTPUT_AI_EXT_MUX_CLK = 12,
+ NI_PFI_OUTPUT_GOUT0 = 13,
+ NI_PFI_OUTPUT_GOUT1 = 14,
+ NI_PFI_OUTPUT_FREQ_OUT = 15,
+ NI_PFI_OUTPUT_PFI_DO = 16,
+ NI_PFI_OUTPUT_I_ATRIG = 17,
+ NI_PFI_OUTPUT_RTSI0 = 18,
+ NI_PFI_OUTPUT_PXI_STAR_TRIGGER_IN = 26,
+ NI_PFI_OUTPUT_SCXI_TRIG1 = 27,
+ NI_PFI_OUTPUT_DIO_CHANGE_DETECT_RTSI = 28,
+ NI_PFI_OUTPUT_CDI_SAMPLE = 29,
+ NI_PFI_OUTPUT_CDO_UPDATE = 30
+};
+
+#define NI_PFI_OUTPUT_RTSI(x) (NI_PFI_OUTPUT_RTSI0 + (x))
+
+/*
+ * Signals which can be routed to output on a NI PFI pin on a 660x board
+ * with INSN_CONFIG_SET_ROUTING. The numbers assigned are
+ * not arbitrary, they correspond to the bits required
+ * to program the board. Lines 0 to 7 can only be set to
+ * NI_660X_PFI_OUTPUT_DIO. Lines 32 to 39 can only be set to
+ * NI_660X_PFI_OUTPUT_COUNTER.
+ */
+enum ni_660x_pfi_routing {
+ NI_660X_PFI_OUTPUT_COUNTER = 1, /* counter */
+ NI_660X_PFI_OUTPUT_DIO = 2, /* static digital output */
+};
+
+/*
+ * NI External Trigger lines. These values are not arbitrary, but are related
+ * to the bits required to program the board (offset by 1 for historical
+ * reasons).
+ */
+#define NI_EXT_PFI(x) (NI_USUAL_PFI_SELECT(x) - 1)
+#define NI_EXT_RTSI(x) (NI_USUAL_RTSI_SELECT(x) - 1)
+
+/*
+ * Clock sources for CDIO subdevice on NI m-series boards. Used as the
+ * scan_begin_arg for a comedi_command. These sources may also be bitwise-or'd
+ * with CR_INVERT to change polarity.
+ */
+enum ni_m_series_cdio_scan_begin_src {
+ NI_CDIO_SCAN_BEGIN_SRC_GROUND = 0,
+ NI_CDIO_SCAN_BEGIN_SRC_AI_START = 18,
+ NI_CDIO_SCAN_BEGIN_SRC_AI_CONVERT = 19,
+ NI_CDIO_SCAN_BEGIN_SRC_PXI_STAR_TRIGGER = 20,
+ NI_CDIO_SCAN_BEGIN_SRC_G0_OUT = 28,
+ NI_CDIO_SCAN_BEGIN_SRC_G1_OUT = 29,
+ NI_CDIO_SCAN_BEGIN_SRC_ANALOG_TRIGGER = 30,
+ NI_CDIO_SCAN_BEGIN_SRC_AO_UPDATE = 31,
+ NI_CDIO_SCAN_BEGIN_SRC_FREQ_OUT = 32,
+ NI_CDIO_SCAN_BEGIN_SRC_DIO_CHANGE_DETECT_IRQ = 33
+};
+
+#define NI_CDIO_SCAN_BEGIN_SRC_PFI(x) NI_USUAL_PFI_SELECT(x)
+#define NI_CDIO_SCAN_BEGIN_SRC_RTSI(x) NI_USUAL_RTSI_SELECT(x)
+
+/*
+ * scan_begin_src for scan_begin_arg==TRIG_EXT with analog output command on NI
+ * boards. These scan begin sources can also be bitwise-or'd with CR_INVERT to
+ * change polarity.
+ */
+#define NI_AO_SCAN_BEGIN_SRC_PFI(x) NI_USUAL_PFI_SELECT(x)
+#define NI_AO_SCAN_BEGIN_SRC_RTSI(x) NI_USUAL_RTSI_SELECT(x)
+
+/*
+ * Bits for setting a clock source with
+ * INSN_CONFIG_SET_CLOCK_SRC when using NI frequency output subdevice.
+ */
+enum ni_freq_out_clock_source_bits {
+ NI_FREQ_OUT_TIMEBASE_1_DIV_2_CLOCK_SRC, /* 10 MHz */
+ NI_FREQ_OUT_TIMEBASE_2_CLOCK_SRC /* 100 KHz */
+};
+
+/*
+ * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
+ * 8254 counter subdevices on Amplicon DIO boards (amplc_dio200 driver).
+ */
+enum amplc_dio_clock_source {
+ /*
+ * Per channel external clock
+ * input/output pin (pin is only an
+ * input when clock source set to this value,
+ * otherwise it is an output)
+ */
+ AMPLC_DIO_CLK_CLKN,
+ AMPLC_DIO_CLK_10MHZ, /* 10 MHz internal clock */
+ AMPLC_DIO_CLK_1MHZ, /* 1 MHz internal clock */
+ AMPLC_DIO_CLK_100KHZ, /* 100 kHz internal clock */
+ AMPLC_DIO_CLK_10KHZ, /* 10 kHz internal clock */
+ AMPLC_DIO_CLK_1KHZ, /* 1 kHz internal clock */
+ /*
+ * Output of preceding counter channel
+ * (for channel 0, preceding counter
+ * channel is channel 2 on preceding
+ * counter subdevice, for first counter
+ * subdevice, preceding counter
+ * subdevice is the last counter
+ * subdevice)
+ */
+ AMPLC_DIO_CLK_OUTNM1,
+ AMPLC_DIO_CLK_EXT, /* per chip external input pin */
+ /* the following are "enhanced" clock sources for PCIe models */
+ AMPLC_DIO_CLK_VCC, /* clock input HIGH */
+ AMPLC_DIO_CLK_GND, /* clock input LOW */
+ AMPLC_DIO_CLK_PAT_PRESENT, /* "pattern present" signal */
+ AMPLC_DIO_CLK_20MHZ /* 20 MHz internal clock */
+};
+
+/*
+ * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
+ * timer subdevice on some Amplicon DIO PCIe boards (amplc_dio200 driver).
+ */
+enum amplc_dio_ts_clock_src {
+ AMPLC_DIO_TS_CLK_1GHZ, /* 1 ns period with 20 ns granularity */
+ AMPLC_DIO_TS_CLK_1MHZ, /* 1 us period */
+ AMPLC_DIO_TS_CLK_1KHZ /* 1 ms period */
+};
+
+/*
+ * Values for setting a gate source with INSN_CONFIG_SET_GATE_SRC for
+ * 8254 counter subdevices on Amplicon DIO boards (amplc_dio200 driver).
+ */
+enum amplc_dio_gate_source {
+ AMPLC_DIO_GAT_VCC, /* internal high logic level */
+ AMPLC_DIO_GAT_GND, /* internal low logic level */
+ AMPLC_DIO_GAT_GATN, /* per channel external gate input */
+ /*
+ * negated output of counter channel minus 2
+ * (for channels 0 or 1, channel minus 2 is channel 1 or 2 on
+ * the preceding counter subdevice, for the first counter subdevice
+ * the preceding counter subdevice is the last counter subdevice)
+ */
+ AMPLC_DIO_GAT_NOUTNM2,
+ AMPLC_DIO_GAT_RESERVED4,
+ AMPLC_DIO_GAT_RESERVED5,
+ AMPLC_DIO_GAT_RESERVED6,
+ AMPLC_DIO_GAT_RESERVED7,
+ /* the following are "enhanced" gate sources for PCIe models */
+ AMPLC_DIO_GAT_NGATN = 6, /* negated per channel gate input */
+ /* non-negated output of counter channel minus 2 */
+ AMPLC_DIO_GAT_OUTNM2,
+ AMPLC_DIO_GAT_PAT_PRESENT, /* "pattern present" signal */
+ AMPLC_DIO_GAT_PAT_OCCURRED, /* "pattern occurred" latched */
+ AMPLC_DIO_GAT_PAT_GONE, /* "pattern gone away" latched */
+ AMPLC_DIO_GAT_NPAT_PRESENT, /* negated "pattern present" */
+ AMPLC_DIO_GAT_NPAT_OCCURRED, /* negated "pattern occurred" */
+ AMPLC_DIO_GAT_NPAT_GONE /* negated "pattern gone away" */
+};
+
+/*
+ * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
+ * the counter subdevice on the Kolter Electronic PCI-Counter board
+ * (ke_counter driver).
+ */
+enum ke_counter_clock_source {
+ KE_CLK_20MHZ, /* internal 20MHz (default) */
+ KE_CLK_4MHZ, /* internal 4MHz (option) */
+ KE_CLK_EXT /* external clock on pin 21 of D-Sub */
+};
+
+#endif /* _COMEDI_H */
projects / linux.git / commitdiff