+++ /dev/null
-#ifndef SPI_ADIS16220_H_
-#define SPI_ADIS16220_H_
-
-#include <linux/iio/imu/adis.h>
-
-#define ADIS16220_STARTUP_DELAY 220 /* ms */
-
-/* Flash memory write count */
-#define ADIS16220_FLASH_CNT 0x00
-/* Control, acceleration offset adjustment control */
-#define ADIS16220_ACCL_NULL 0x02
-/* Control, AIN1 offset adjustment control */
-#define ADIS16220_AIN1_NULL 0x04
-/* Control, AIN2 offset adjustment control */
-#define ADIS16220_AIN2_NULL 0x06
-/* Output, power supply during capture */
-#define ADIS16220_CAPT_SUPPLY 0x0A
-/* Output, temperature during capture */
-#define ADIS16220_CAPT_TEMP 0x0C
-/* Output, peak acceleration during capture */
-#define ADIS16220_CAPT_PEAKA 0x0E
-/* Output, peak AIN1 level during capture */
-#define ADIS16220_CAPT_PEAK1 0x10
-/* Output, peak AIN2 level during capture */
-#define ADIS16220_CAPT_PEAK2 0x12
-/* Output, capture buffer for acceleration */
-#define ADIS16220_CAPT_BUFA 0x14
-/* Output, capture buffer for AIN1 */
-#define ADIS16220_CAPT_BUF1 0x16
-/* Output, capture buffer for AIN2 */
-#define ADIS16220_CAPT_BUF2 0x18
-/* Control, capture buffer address pointer */
-#define ADIS16220_CAPT_PNTR 0x1A
-/* Control, capture control register */
-#define ADIS16220_CAPT_CTRL 0x1C
-/* Control, capture period (automatic mode) */
-#define ADIS16220_CAPT_PRD 0x1E
-/* Control, Alarm A, acceleration peak threshold */
-#define ADIS16220_ALM_MAGA 0x20
-/* Control, Alarm 1, AIN1 peak threshold */
-#define ADIS16220_ALM_MAG1 0x22
-/* Control, Alarm 2, AIN2 peak threshold */
-#define ADIS16220_ALM_MAG2 0x24
-/* Control, Alarm S, peak threshold */
-#define ADIS16220_ALM_MAGS 0x26
-/* Control, alarm configuration register */
-#define ADIS16220_ALM_CTRL 0x28
-/* Control, general I/O configuration */
-#define ADIS16220_GPIO_CTRL 0x32
-/* Control, self-test control, AIN configuration */
-#define ADIS16220_MSC_CTRL 0x34
-/* Control, digital I/O configuration */
-#define ADIS16220_DIO_CTRL 0x36
-/* Control, filter configuration */
-#define ADIS16220_AVG_CNT 0x38
-/* Status, system status */
-#define ADIS16220_DIAG_STAT 0x3C
-/* Control, system commands */
-#define ADIS16220_GLOB_CMD 0x3E
-/* Status, self-test response */
-#define ADIS16220_ST_DELTA 0x40
-/* Lot Identification Code 1 */
-#define ADIS16220_LOT_ID1 0x52
-/* Lot Identification Code 2 */
-#define ADIS16220_LOT_ID2 0x54
-/* Product identifier; convert to decimal = 16220 */
-#define ADIS16220_PROD_ID 0x56
-/* Serial number */
-#define ADIS16220_SERIAL_NUM 0x58
-
-#define ADIS16220_CAPTURE_SIZE 2048
-
-/* MSC_CTRL */
-#define ADIS16220_MSC_CTRL_SELF_TEST_EN BIT(8)
-#define ADIS16220_MSC_CTRL_POWER_SUP_COM_AIN1 BIT(1)
-#define ADIS16220_MSC_CTRL_POWER_SUP_COM_AIN2 BIT(0)
-
-/* DIO_CTRL */
-#define ADIS16220_MSC_CTRL_DIO2_BUSY_IND (BIT(5) | BIT(4))
-#define ADIS16220_MSC_CTRL_DIO1_BUSY_IND (BIT(3) | BIT(2))
-#define ADIS16220_MSC_CTRL_DIO2_ACT_HIGH BIT(1)
-#define ADIS16220_MSC_CTRL_DIO1_ACT_HIGH BIT(0)
-
-/* DIAG_STAT */
-/* AIN2 sample > ALM_MAG2 */
-#define ADIS16220_DIAG_STAT_ALM_MAG2 BIT(14)
-/* AIN1 sample > ALM_MAG1 */
-#define ADIS16220_DIAG_STAT_ALM_MAG1 BIT(13)
-/* Acceleration sample > ALM_MAGA */
-#define ADIS16220_DIAG_STAT_ALM_MAGA BIT(12)
-/* Error condition programmed into ALM_MAGS[11:0] and ALM_CTRL[5:4] is true */
-#define ADIS16220_DIAG_STAT_ALM_MAGS BIT(11)
-/* |Peak value in AIN2 data capture| > ALM_MAG2 */
-#define ADIS16220_DIAG_STAT_PEAK_AIN2 BIT(10)
-/* |Peak value in AIN1 data capture| > ALM_MAG1 */
-#define ADIS16220_DIAG_STAT_PEAK_AIN1 BIT(9)
-/* |Peak value in acceleration data capture| > ALM_MAGA */
-#define ADIS16220_DIAG_STAT_PEAK_ACCEL BIT(8)
-/* Data ready, capture complete */
-#define ADIS16220_DIAG_STAT_DATA_RDY BIT(7)
-#define ADIS16220_DIAG_STAT_FLASH_CHK BIT(6)
-#define ADIS16220_DIAG_STAT_SELF_TEST BIT(5)
-/* Capture period violation/interruption */
-#define ADIS16220_DIAG_STAT_VIOLATION_BIT 4
-/* SPI communications failure */
-#define ADIS16220_DIAG_STAT_SPI_FAIL_BIT 3
-/* Flash update failure */
-#define ADIS16220_DIAG_STAT_FLASH_UPT_BIT 2
-/* Power supply above 3.625 V */
-#define ADIS16220_DIAG_STAT_POWER_HIGH_BIT 1
-/* Power supply below 3.15 V */
-#define ADIS16220_DIAG_STAT_POWER_LOW_BIT 0
-
-/* GLOB_CMD */
-#define ADIS16220_GLOB_CMD_SW_RESET BIT(7)
-#define ADIS16220_GLOB_CMD_SELF_TEST BIT(2)
-#define ADIS16220_GLOB_CMD_PWR_DOWN BIT(1)
-
-#define ADIS16220_MAX_TX 2048
-#define ADIS16220_MAX_RX 2048
-
-#define ADIS16220_SPI_BURST (u32)(1000 * 1000)
-#define ADIS16220_SPI_FAST (u32)(2000 * 1000)
-
-/**
- * struct adis16220_state - device instance specific data
- * @adis: adis device
- * @tx: transmit buffer
- * @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
- **/
-struct adis16220_state {
- struct adis adis;
-
- struct mutex buf_lock;
- u8 tx[ADIS16220_MAX_TX] ____cacheline_aligned;
- u8 rx[ADIS16220_MAX_RX];
-};
-
-#endif /* SPI_ADIS16220_H_ */
+++ /dev/null
-/*
- * ADIS16220 Programmable Digital Vibration Sensor driver
- *
- * Copyright 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-
-#include "adis16220.h"
-
-static ssize_t adis16220_read_16bit(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct adis16220_state *st = iio_priv(indio_dev);
- ssize_t ret;
- u16 val;
-
- /* Take the iio_dev status lock */
- mutex_lock(&indio_dev->mlock);
- ret = adis_read_reg_16(&st->adis, this_attr->address, &val);
- mutex_unlock(&indio_dev->mlock);
- if (ret)
- return ret;
- return sprintf(buf, "%u\n", val);
-}
-
-static ssize_t adis16220_write_16bit(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- struct adis16220_state *st = iio_priv(indio_dev);
- int ret;
- u16 val;
-
- ret = kstrtou16(buf, 10, &val);
- if (ret)
- goto error_ret;
- ret = adis_write_reg_16(&st->adis, this_attr->address, val);
-
-error_ret:
- return ret ? ret : len;
-}
-
-static int adis16220_capture(struct iio_dev *indio_dev)
-{
- struct adis16220_state *st = iio_priv(indio_dev);
- int ret;
-
- /* initiates a manual data capture */
- ret = adis_write_reg_16(&st->adis, ADIS16220_GLOB_CMD, 0xBF08);
- if (ret)
- dev_err(&indio_dev->dev, "problem beginning capture");
-
- usleep_range(10000, 11000); /* delay for capture to finish */
-
- return ret;
-}
-
-static ssize_t adis16220_write_capture(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t len)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- bool val;
- int ret;
-
- ret = strtobool(buf, &val);
- if (ret)
- return ret;
- if (!val)
- return -EINVAL;
- ret = adis16220_capture(indio_dev);
- if (ret)
- return ret;
-
- return len;
-}
-
-static ssize_t adis16220_capture_buffer_read(struct iio_dev *indio_dev,
- char *buf,
- loff_t off,
- size_t count,
- int addr)
-{
- struct adis16220_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 25,
- }, {
- .tx_buf = st->tx,
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .cs_change = 1,
- .delay_usecs = 25,
- },
- };
- int ret;
- int i;
-
- if (unlikely(!count))
- return count;
-
- if ((off >= ADIS16220_CAPTURE_SIZE) || (count & 1) || (off & 1))
- return -EINVAL;
-
- if (off + count > ADIS16220_CAPTURE_SIZE)
- count = ADIS16220_CAPTURE_SIZE - off;
-
- /* write the begin position of capture buffer */
- ret = adis_write_reg_16(&st->adis,
- ADIS16220_CAPT_PNTR,
- off > 1);
- if (ret)
- return -EIO;
-
- /* read count/2 values from capture buffer */
- mutex_lock(&st->buf_lock);
-
- for (i = 0; i < count; i += 2) {
- st->tx[i] = ADIS_READ_REG(addr);
- st->tx[i + 1] = 0;
- }
- xfers[1].len = count;
-
- ret = spi_sync_transfer(st->adis.spi, xfers, ARRAY_SIZE(xfers));
- if (ret) {
- mutex_unlock(&st->buf_lock);
- return -EIO;
- }
-
- memcpy(buf, st->rx, count);
-
- mutex_unlock(&st->buf_lock);
- return count;
-}
-
-static ssize_t adis16220_accel_bin_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf,
- loff_t off,
- size_t count)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
-
- return adis16220_capture_buffer_read(indio_dev, buf,
- off, count,
- ADIS16220_CAPT_BUFA);
-}
-
-static struct bin_attribute accel_bin = {
- .attr = {
- .name = "accel_bin",
- .mode = S_IRUGO,
- },
- .read = adis16220_accel_bin_read,
- .size = ADIS16220_CAPTURE_SIZE,
-};
-
-static ssize_t adis16220_adc1_bin_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
-
- return adis16220_capture_buffer_read(indio_dev, buf,
- off, count,
- ADIS16220_CAPT_BUF1);
-}
-
-static struct bin_attribute adc1_bin = {
- .attr = {
- .name = "in0_bin",
- .mode = S_IRUGO,
- },
- .read = adis16220_adc1_bin_read,
- .size = ADIS16220_CAPTURE_SIZE,
-};
-
-static ssize_t adis16220_adc2_bin_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- char *buf, loff_t off,
- size_t count)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(kobj_to_dev(kobj));
-
- return adis16220_capture_buffer_read(indio_dev, buf,
- off, count,
- ADIS16220_CAPT_BUF2);
-}
-
-static struct bin_attribute adc2_bin = {
- .attr = {
- .name = "in1_bin",
- .mode = S_IRUGO,
- },
- .read = adis16220_adc2_bin_read,
- .size = ADIS16220_CAPTURE_SIZE,
-};
-
-#define IIO_DEV_ATTR_CAPTURE(_store) \
- IIO_DEVICE_ATTR(capture, S_IWUSR, NULL, _store, 0)
-
-static IIO_DEV_ATTR_CAPTURE(adis16220_write_capture);
-
-#define IIO_DEV_ATTR_CAPTURE_COUNT(_mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(capture_count, _mode, _show, _store, _addr)
-
-static IIO_DEV_ATTR_CAPTURE_COUNT(S_IWUSR | S_IRUGO,
- adis16220_read_16bit,
- adis16220_write_16bit,
- ADIS16220_CAPT_PNTR);
-
-enum adis16220_channel {
- in_supply, in_1, in_2, accel, temp
-};
-
-struct adis16220_address_spec {
- u8 addr;
- u8 bits;
- bool sign;
-};
-
-/* Address / bits / signed */
-static const struct adis16220_address_spec adis16220_addresses[][3] = {
- [in_supply] = { { ADIS16220_CAPT_SUPPLY, 12, 0 }, },
- [in_1] = { { ADIS16220_CAPT_BUF1, 16, 1 },
- { ADIS16220_AIN1_NULL, 16, 1 },
- { ADIS16220_CAPT_PEAK1, 16, 1 }, },
- [in_2] = { { ADIS16220_CAPT_BUF2, 16, 1 },
- { ADIS16220_AIN2_NULL, 16, 1 },
- { ADIS16220_CAPT_PEAK2, 16, 1 }, },
- [accel] = { { ADIS16220_CAPT_BUFA, 16, 1 },
- { ADIS16220_ACCL_NULL, 16, 1 },
- { ADIS16220_CAPT_PEAKA, 16, 1 }, },
- [temp] = { { ADIS16220_CAPT_TEMP, 12, 0 }, }
-};
-
-static int adis16220_read_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int *val, int *val2,
- long mask)
-{
- struct adis16220_state *st = iio_priv(indio_dev);
- const struct adis16220_address_spec *addr;
- int ret = -EINVAL;
- int addrind = 0;
- u16 uval;
- s16 sval;
- u8 bits;
-
- switch (mask) {
- case IIO_CHAN_INFO_RAW:
- addrind = 0;
- break;
- case IIO_CHAN_INFO_OFFSET:
- if (chan->type == IIO_TEMP) {
- *val = 25000 / -470 - 1278; /* 25 C = 1278 */
- return IIO_VAL_INT;
- }
- addrind = 1;
- break;
- case IIO_CHAN_INFO_PEAK:
- addrind = 2;
- break;
- case IIO_CHAN_INFO_SCALE:
- switch (chan->type) {
- case IIO_TEMP:
- *val = -470; /* -0.47 C */
- *val2 = 0;
- return IIO_VAL_INT_PLUS_MICRO;
- case IIO_ACCEL:
- *val2 = IIO_G_TO_M_S_2(19073); /* 19.073 g */
- return IIO_VAL_INT_PLUS_MICRO;
- case IIO_VOLTAGE:
- if (chan->channel == 0) {
- *val = 1;
- *val2 = 220700; /* 1.2207 mV */
- } else {
- /* Should really be dependent on VDD */
- *val2 = 305180; /* 305.18 uV */
- }
- return IIO_VAL_INT_PLUS_MICRO;
- default:
- return -EINVAL;
- }
- default:
- return -EINVAL;
- }
- addr = &adis16220_addresses[chan->address][addrind];
- if (addr->sign) {
- ret = adis_read_reg_16(&st->adis, addr->addr, &sval);
- if (ret)
- return ret;
- bits = addr->bits;
- sval &= (1 << bits) - 1;
- sval = (s16)(sval << (16 - bits)) >> (16 - bits);
- *val = sval;
- return IIO_VAL_INT;
- }
- ret = adis_read_reg_16(&st->adis, addr->addr, &uval);
- if (ret)
- return ret;
- bits = addr->bits;
- uval &= (1 << bits) - 1;
- *val = uval;
- return IIO_VAL_INT;
-}
-
-static const struct iio_chan_spec adis16220_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .extend_name = "supply",
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_SCALE),
- .address = in_supply,
- }, {
- .type = IIO_ACCEL,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_OFFSET) |
- BIT(IIO_CHAN_INFO_SCALE) |
- BIT(IIO_CHAN_INFO_PEAK),
- .address = accel,
- }, {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_OFFSET) |
- BIT(IIO_CHAN_INFO_SCALE),
- .address = temp,
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
- BIT(IIO_CHAN_INFO_OFFSET) |
- BIT(IIO_CHAN_INFO_SCALE),
- .address = in_1,
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 2,
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
- .address = in_2,
- }
-};
-
-static struct attribute *adis16220_attributes[] = {
- &iio_dev_attr_capture.dev_attr.attr,
- &iio_dev_attr_capture_count.dev_attr.attr,
- NULL
-};
-
-static const struct attribute_group adis16220_attribute_group = {
- .attrs = adis16220_attributes,
-};
-
-static const struct iio_info adis16220_info = {
- .attrs = &adis16220_attribute_group,
- .driver_module = THIS_MODULE,
- .read_raw = &adis16220_read_raw,
-};
-
-static const char * const adis16220_status_error_msgs[] = {
- [ADIS16220_DIAG_STAT_VIOLATION_BIT] = "Capture period violation/interruption",
- [ADIS16220_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
- [ADIS16220_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
- [ADIS16220_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
- [ADIS16220_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
-};
-
-static const struct adis_data adis16220_data = {
- .read_delay = 35,
- .write_delay = 35,
- .msc_ctrl_reg = ADIS16220_MSC_CTRL,
- .glob_cmd_reg = ADIS16220_GLOB_CMD,
- .diag_stat_reg = ADIS16220_DIAG_STAT,
-
- .self_test_mask = ADIS16220_MSC_CTRL_SELF_TEST_EN,
- .startup_delay = ADIS16220_STARTUP_DELAY,
-
- .status_error_msgs = adis16220_status_error_msgs,
- .status_error_mask = BIT(ADIS16220_DIAG_STAT_VIOLATION_BIT) |
- BIT(ADIS16220_DIAG_STAT_SPI_FAIL_BIT) |
- BIT(ADIS16220_DIAG_STAT_FLASH_UPT_BIT) |
- BIT(ADIS16220_DIAG_STAT_POWER_HIGH_BIT) |
- BIT(ADIS16220_DIAG_STAT_POWER_LOW_BIT),
-};
-
-static int adis16220_probe(struct spi_device *spi)
-{
- int ret;
- struct adis16220_state *st;
- struct iio_dev *indio_dev;
-
- /* setup the industrialio driver allocated elements */
- indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
- if (!indio_dev)
- return -ENOMEM;
-
- st = iio_priv(indio_dev);
- /* this is only used for removal purposes */
- spi_set_drvdata(spi, indio_dev);
-
- indio_dev->name = spi->dev.driver->name;
- indio_dev->dev.parent = &spi->dev;
- indio_dev->info = &adis16220_info;
- indio_dev->modes = INDIO_DIRECT_MODE;
- indio_dev->channels = adis16220_channels;
- indio_dev->num_channels = ARRAY_SIZE(adis16220_channels);
-
- ret = devm_iio_device_register(&spi->dev, indio_dev);
- if (ret)
- return ret;
-
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &accel_bin);
- if (ret)
- return ret;
-
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &adc1_bin);
- if (ret)
- goto error_rm_accel_bin;
-
- ret = sysfs_create_bin_file(&indio_dev->dev.kobj, &adc2_bin);
- if (ret)
- goto error_rm_adc1_bin;
-
- ret = adis_init(&st->adis, indio_dev, spi, &adis16220_data);
- if (ret)
- goto error_rm_adc2_bin;
- /* Get the device into a sane initial state */
- ret = adis_initial_startup(&st->adis);
- if (ret)
- goto error_rm_adc2_bin;
- return 0;
-
-error_rm_adc2_bin:
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc2_bin);
-error_rm_adc1_bin:
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc1_bin);
-error_rm_accel_bin:
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &accel_bin);
- return ret;
-}
-
-static int adis16220_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
-
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc2_bin);
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &adc1_bin);
- sysfs_remove_bin_file(&indio_dev->dev.kobj, &accel_bin);
-
- return 0;
-}
-
-static struct spi_driver adis16220_driver = {
- .driver = {
- .name = "adis16220",
- },
- .probe = adis16220_probe,
- .remove = adis16220_remove,
-};
-module_spi_driver(adis16220_driver);
-
-MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADIS16220 Digital Vibration Sensor");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:adis16220");
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