source "drivers/staging/media/rkvdec/Kconfig"
-source "drivers/staging/media/stkwebcam/Kconfig"
-
source "drivers/staging/media/sunxi/Kconfig"
source "drivers/staging/media/tegra-video/Kconfig"
+menuconfig STAGING_MEDIA_DEPRECATED
+ bool "Media staging drivers (DEPRECATED)"
+ default n
+ help
+ This option enables deprecated media drivers that are
+ scheduled for future removal from the kernel.
+
+ If you wish to work on these drivers to prevent their removal,
+ then contact the linux-media@vger.kernel.org mailing list.
+
+ If in doubt, say N here.
+
+if STAGING_MEDIA_DEPRECATED
+source "drivers/staging/media/deprecated/stkwebcam/Kconfig"
+endif
+
endif
obj-$(CONFIG_VIDEO_MESON_VDEC) += meson/vdec/
obj-$(CONFIG_VIDEO_OMAP4) += omap4iss/
obj-$(CONFIG_VIDEO_ROCKCHIP_VDEC) += rkvdec/
-obj-$(CONFIG_VIDEO_STKWEBCAM) += stkwebcam/
+obj-$(CONFIG_VIDEO_STKWEBCAM) += deprecated/stkwebcam/
obj-$(CONFIG_VIDEO_SUNXI) += sunxi/
obj-$(CONFIG_VIDEO_TEGRA) += tegra-video/
obj-$(CONFIG_VIDEO_HANTRO) += hantro/
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_STKWEBCAM
+ tristate "USB Syntek DC1125 Camera support (DEPRECATED)"
+ depends on VIDEO_DEV
+ depends on USB
+ help
+ Say Y here if you want to use this type of camera.
+ Supported devices are typically found in some Asus laptops,
+ with USB id 174f:a311 and 05e1:0501. Other Syntek cameras
+ may be supported by the stk11xx driver, from which this is
+ derived, see <http://sourceforge.net/projects/syntekdriver/>
+
+ This driver is deprecated and is scheduled for removal by
+ the end of 2022. See the TODO file for more information.
+
+ To compile this driver as a module, choose M here: the
+ module will be called stkwebcam.
+
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+stkwebcam-objs := stk-webcam.o stk-sensor.o
+
+obj-$(CONFIG_VIDEO_STKWEBCAM) += stkwebcam.o
+
--- /dev/null
+This is a very old driver for very old hardware (specifically
+laptops that use this sensor). In addition according to reports
+the picture quality is quite bad.
+
+This is also one of the few drivers still not using the vb2
+framework (or even the old videobuf framework!), so this driver
+is now deprecated with the intent of removing it altogether by
+the end of 2022.
+
+In order to keep this driver it has to be converted to vb2.
+If someone is interested in doing this work, then contact the
+linux-media mailinglist (https://linuxtv.org/lists.php).
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* stk-sensor.c: Driver for ov96xx sensor (used in some Syntek webcams)
+ *
+ * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
+ *
+ * Some parts derived from ov7670.c:
+ * Copyright 2006 One Laptop Per Child Association, Inc. Written
+ * by Jonathan Corbet with substantial inspiration from Mark
+ * McClelland's ovcamchip code.
+ *
+ * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
+ *
+ * This file may be distributed under the terms of the GNU General
+ */
+
+/* Controlling the sensor via the STK1125 vendor specific control interface:
+ * The camera uses an OmniVision sensor and the stk1125 provides an
+ * SCCB(i2c)-USB bridge which let us program the sensor.
+ * In my case the sensor id is 0x9652, it can be read from sensor's register
+ * 0x0A and 0x0B as follows:
+ * - read register #R:
+ * output #R to index 0x0208
+ * output 0x0070 to index 0x0200
+ * input 1 byte from index 0x0201 (some kind of status register)
+ * until its value is 0x01
+ * input 1 byte from index 0x0209. This is the value of #R
+ * - write value V to register #R
+ * output #R to index 0x0204
+ * output V to index 0x0205
+ * output 0x0005 to index 0x0200
+ * input 1 byte from index 0x0201 until its value becomes 0x04
+ */
+
+/* It seems the i2c bus is controlled with these registers */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "stk-webcam.h"
+
+#define STK_IIC_BASE (0x0200)
+# define STK_IIC_OP (STK_IIC_BASE)
+# define STK_IIC_OP_TX (0x05)
+# define STK_IIC_OP_RX (0x70)
+# define STK_IIC_STAT (STK_IIC_BASE+1)
+# define STK_IIC_STAT_TX_OK (0x04)
+# define STK_IIC_STAT_RX_OK (0x01)
+/* I don't know what does this register.
+ * when it is 0x00 or 0x01, we cannot talk to the sensor,
+ * other values work */
+# define STK_IIC_ENABLE (STK_IIC_BASE+2)
+# define STK_IIC_ENABLE_NO (0x00)
+/* This is what the driver writes in windows */
+# define STK_IIC_ENABLE_YES (0x1e)
+/*
+ * Address of the slave. Seems like the binary driver look for the
+ * sensor in multiple places, attempting a reset sequence.
+ * We only know about the ov9650
+ */
+# define STK_IIC_ADDR (STK_IIC_BASE+3)
+# define STK_IIC_TX_INDEX (STK_IIC_BASE+4)
+# define STK_IIC_TX_VALUE (STK_IIC_BASE+5)
+# define STK_IIC_RX_INDEX (STK_IIC_BASE+8)
+# define STK_IIC_RX_VALUE (STK_IIC_BASE+9)
+
+#define MAX_RETRIES (50)
+
+#define SENSOR_ADDRESS (0x60)
+
+/* From ov7670.c (These registers aren't fully accurate) */
+
+/* Registers */
+#define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */
+#define REG_BLUE 0x01 /* blue gain */
+#define REG_RED 0x02 /* red gain */
+#define REG_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */
+#define REG_COM1 0x04 /* Control 1 */
+#define COM1_CCIR656 0x40 /* CCIR656 enable */
+#define COM1_QFMT 0x20 /* QVGA/QCIF format */
+#define COM1_SKIP_0 0x00 /* Do not skip any row */
+#define COM1_SKIP_2 0x04 /* Skip 2 rows of 4 */
+#define COM1_SKIP_3 0x08 /* Skip 3 rows of 4 */
+#define REG_BAVE 0x05 /* U/B Average level */
+#define REG_GbAVE 0x06 /* Y/Gb Average level */
+#define REG_AECHH 0x07 /* AEC MS 5 bits */
+#define REG_RAVE 0x08 /* V/R Average level */
+#define REG_COM2 0x09 /* Control 2 */
+#define COM2_SSLEEP 0x10 /* Soft sleep mode */
+#define REG_PID 0x0a /* Product ID MSB */
+#define REG_VER 0x0b /* Product ID LSB */
+#define REG_COM3 0x0c /* Control 3 */
+#define COM3_SWAP 0x40 /* Byte swap */
+#define COM3_SCALEEN 0x08 /* Enable scaling */
+#define COM3_DCWEN 0x04 /* Enable downsamp/crop/window */
+#define REG_COM4 0x0d /* Control 4 */
+#define REG_COM5 0x0e /* All "reserved" */
+#define REG_COM6 0x0f /* Control 6 */
+#define REG_AECH 0x10 /* More bits of AEC value */
+#define REG_CLKRC 0x11 /* Clock control */
+#define CLK_PLL 0x80 /* Enable internal PLL */
+#define CLK_EXT 0x40 /* Use external clock directly */
+#define CLK_SCALE 0x3f /* Mask for internal clock scale */
+#define REG_COM7 0x12 /* Control 7 */
+#define COM7_RESET 0x80 /* Register reset */
+#define COM7_FMT_MASK 0x38
+#define COM7_FMT_SXGA 0x00
+#define COM7_FMT_VGA 0x40
+#define COM7_FMT_CIF 0x20 /* CIF format */
+#define COM7_FMT_QVGA 0x10 /* QVGA format */
+#define COM7_FMT_QCIF 0x08 /* QCIF format */
+#define COM7_RGB 0x04 /* bits 0 and 2 - RGB format */
+#define COM7_YUV 0x00 /* YUV */
+#define COM7_BAYER 0x01 /* Bayer format */
+#define COM7_PBAYER 0x05 /* "Processed bayer" */
+#define REG_COM8 0x13 /* Control 8 */
+#define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */
+#define COM8_AECSTEP 0x40 /* Unlimited AEC step size */
+#define COM8_BFILT 0x20 /* Band filter enable */
+#define COM8_AGC 0x04 /* Auto gain enable */
+#define COM8_AWB 0x02 /* White balance enable */
+#define COM8_AEC 0x01 /* Auto exposure enable */
+#define REG_COM9 0x14 /* Control 9 - gain ceiling */
+#define REG_COM10 0x15 /* Control 10 */
+#define COM10_HSYNC 0x40 /* HSYNC instead of HREF */
+#define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */
+#define COM10_HREF_REV 0x08 /* Reverse HREF */
+#define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */
+#define COM10_VS_NEG 0x02 /* VSYNC negative */
+#define COM10_HS_NEG 0x01 /* HSYNC negative */
+#define REG_HSTART 0x17 /* Horiz start high bits */
+#define REG_HSTOP 0x18 /* Horiz stop high bits */
+#define REG_VSTART 0x19 /* Vert start high bits */
+#define REG_VSTOP 0x1a /* Vert stop high bits */
+#define REG_PSHFT 0x1b /* Pixel delay after HREF */
+#define REG_MIDH 0x1c /* Manuf. ID high */
+#define REG_MIDL 0x1d /* Manuf. ID low */
+#define REG_MVFP 0x1e /* Mirror / vflip */
+#define MVFP_MIRROR 0x20 /* Mirror image */
+#define MVFP_FLIP 0x10 /* Vertical flip */
+
+#define REG_AEW 0x24 /* AGC upper limit */
+#define REG_AEB 0x25 /* AGC lower limit */
+#define REG_VPT 0x26 /* AGC/AEC fast mode op region */
+#define REG_ADVFL 0x2d /* Insert dummy lines (LSB) */
+#define REG_ADVFH 0x2e /* Insert dummy lines (MSB) */
+#define REG_HSYST 0x30 /* HSYNC rising edge delay */
+#define REG_HSYEN 0x31 /* HSYNC falling edge delay */
+#define REG_HREF 0x32 /* HREF pieces */
+#define REG_TSLB 0x3a /* lots of stuff */
+#define TSLB_YLAST 0x04 /* UYVY or VYUY - see com13 */
+#define TSLB_BYTEORD 0x08 /* swap bytes in 16bit mode? */
+#define REG_COM11 0x3b /* Control 11 */
+#define COM11_NIGHT 0x80 /* NIght mode enable */
+#define COM11_NMFR 0x60 /* Two bit NM frame rate */
+#define COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */
+#define COM11_50HZ 0x08 /* Manual 50Hz select */
+#define COM11_EXP 0x02
+#define REG_COM12 0x3c /* Control 12 */
+#define COM12_HREF 0x80 /* HREF always */
+#define REG_COM13 0x3d /* Control 13 */
+#define COM13_GAMMA 0x80 /* Gamma enable */
+#define COM13_UVSAT 0x40 /* UV saturation auto adjustment */
+#define COM13_CMATRIX 0x10 /* Enable color matrix for RGB or YUV */
+#define COM13_UVSWAP 0x01 /* V before U - w/TSLB */
+#define REG_COM14 0x3e /* Control 14 */
+#define COM14_DCWEN 0x10 /* DCW/PCLK-scale enable */
+#define REG_EDGE 0x3f /* Edge enhancement factor */
+#define REG_COM15 0x40 /* Control 15 */
+#define COM15_R10F0 0x00 /* Data range 10 to F0 */
+#define COM15_R01FE 0x80 /* 01 to FE */
+#define COM15_R00FF 0xc0 /* 00 to FF */
+#define COM15_RGB565 0x10 /* RGB565 output */
+#define COM15_RGBFIXME 0x20 /* FIXME */
+#define COM15_RGB555 0x30 /* RGB555 output */
+#define REG_COM16 0x41 /* Control 16 */
+#define COM16_AWBGAIN 0x08 /* AWB gain enable */
+#define REG_COM17 0x42 /* Control 17 */
+#define COM17_AECWIN 0xc0 /* AEC window - must match COM4 */
+#define COM17_CBAR 0x08 /* DSP Color bar */
+
+/*
+ * This matrix defines how the colors are generated, must be
+ * tweaked to adjust hue and saturation.
+ *
+ * Order: v-red, v-green, v-blue, u-red, u-green, u-blue
+ *
+ * They are nine-bit signed quantities, with the sign bit
+ * stored in 0x58. Sign for v-red is bit 0, and up from there.
+ */
+#define REG_CMATRIX_BASE 0x4f
+#define CMATRIX_LEN 6
+#define REG_CMATRIX_SIGN 0x58
+
+
+#define REG_BRIGHT 0x55 /* Brightness */
+#define REG_CONTRAS 0x56 /* Contrast control */
+
+#define REG_GFIX 0x69 /* Fix gain control */
+
+#define REG_RGB444 0x8c /* RGB 444 control */
+#define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */
+#define R444_RGBX 0x01 /* Empty nibble at end */
+
+#define REG_HAECC1 0x9f /* Hist AEC/AGC control 1 */
+#define REG_HAECC2 0xa0 /* Hist AEC/AGC control 2 */
+
+#define REG_BD50MAX 0xa5 /* 50hz banding step limit */
+#define REG_HAECC3 0xa6 /* Hist AEC/AGC control 3 */
+#define REG_HAECC4 0xa7 /* Hist AEC/AGC control 4 */
+#define REG_HAECC5 0xa8 /* Hist AEC/AGC control 5 */
+#define REG_HAECC6 0xa9 /* Hist AEC/AGC control 6 */
+#define REG_HAECC7 0xaa /* Hist AEC/AGC control 7 */
+#define REG_BD60MAX 0xab /* 60hz banding step limit */
+
+
+
+
+/* Returns 0 if OK */
+static int stk_sensor_outb(struct stk_camera *dev, u8 reg, u8 val)
+{
+ int i = 0;
+ u8 tmpval = 0;
+
+ if (stk_camera_write_reg(dev, STK_IIC_TX_INDEX, reg))
+ return 1;
+ if (stk_camera_write_reg(dev, STK_IIC_TX_VALUE, val))
+ return 1;
+ if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_TX))
+ return 1;
+ do {
+ if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval))
+ return 1;
+ i++;
+ } while (tmpval == 0 && i < MAX_RETRIES);
+ if (tmpval != STK_IIC_STAT_TX_OK) {
+ if (tmpval)
+ pr_err("stk_sensor_outb failed, status=0x%02x\n",
+ tmpval);
+ return 1;
+ } else
+ return 0;
+}
+
+static int stk_sensor_inb(struct stk_camera *dev, u8 reg, u8 *val)
+{
+ int i = 0;
+ u8 tmpval = 0;
+
+ if (stk_camera_write_reg(dev, STK_IIC_RX_INDEX, reg))
+ return 1;
+ if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_RX))
+ return 1;
+ do {
+ if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval))
+ return 1;
+ i++;
+ } while (tmpval == 0 && i < MAX_RETRIES);
+ if (tmpval != STK_IIC_STAT_RX_OK) {
+ if (tmpval)
+ pr_err("stk_sensor_inb failed, status=0x%02x\n",
+ tmpval);
+ return 1;
+ }
+
+ if (stk_camera_read_reg(dev, STK_IIC_RX_VALUE, &tmpval))
+ return 1;
+
+ *val = tmpval;
+ return 0;
+}
+
+static int stk_sensor_write_regvals(struct stk_camera *dev,
+ struct regval *rv)
+{
+ int ret;
+ if (rv == NULL)
+ return 0;
+ while (rv->reg != 0xff || rv->val != 0xff) {
+ ret = stk_sensor_outb(dev, rv->reg, rv->val);
+ if (ret != 0)
+ return ret;
+ rv++;
+ }
+ return 0;
+}
+
+int stk_sensor_sleep(struct stk_camera *dev)
+{
+ u8 tmp;
+ return stk_sensor_inb(dev, REG_COM2, &tmp)
+ || stk_sensor_outb(dev, REG_COM2, tmp|COM2_SSLEEP);
+}
+
+int stk_sensor_wakeup(struct stk_camera *dev)
+{
+ u8 tmp;
+ return stk_sensor_inb(dev, REG_COM2, &tmp)
+ || stk_sensor_outb(dev, REG_COM2, tmp&~COM2_SSLEEP);
+}
+
+static struct regval ov_initvals[] = {
+ {REG_CLKRC, CLK_PLL},
+ {REG_COM11, 0x01},
+ {0x6a, 0x7d},
+ {REG_AECH, 0x40},
+ {REG_GAIN, 0x00},
+ {REG_BLUE, 0x80},
+ {REG_RED, 0x80},
+ /* Do not enable fast AEC for now */
+ /*{REG_COM8, COM8_FASTAEC|COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC},*/
+ {REG_COM8, COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC},
+ {0x39, 0x50}, {0x38, 0x93},
+ {0x37, 0x00}, {0x35, 0x81},
+ {REG_COM5, 0x20},
+ {REG_COM1, 0x00},
+ {REG_COM3, 0x00},
+ {REG_COM4, 0x00},
+ {REG_PSHFT, 0x00},
+ {0x16, 0x07},
+ {0x33, 0xe2}, {0x34, 0xbf},
+ {REG_COM16, 0x00},
+ {0x96, 0x04},
+ /* Gamma curve values */
+/* { 0x7a, 0x20 }, { 0x7b, 0x10 },
+ { 0x7c, 0x1e }, { 0x7d, 0x35 },
+ { 0x7e, 0x5a }, { 0x7f, 0x69 },
+ { 0x80, 0x76 }, { 0x81, 0x80 },
+ { 0x82, 0x88 }, { 0x83, 0x8f },
+ { 0x84, 0x96 }, { 0x85, 0xa3 },
+ { 0x86, 0xaf }, { 0x87, 0xc4 },
+ { 0x88, 0xd7 }, { 0x89, 0xe8 },
+*/
+ {REG_GFIX, 0x40},
+ {0x8e, 0x00},
+ {REG_COM12, 0x73},
+ {0x8f, 0xdf}, {0x8b, 0x06},
+ {0x8c, 0x20},
+ {0x94, 0x88}, {0x95, 0x88},
+/* {REG_COM15, 0xc1}, TODO */
+ {0x29, 0x3f},
+ {REG_COM6, 0x42},
+ {REG_BD50MAX, 0x80},
+ {REG_HAECC6, 0xb8}, {REG_HAECC7, 0x92},
+ {REG_BD60MAX, 0x0a},
+ {0x90, 0x00}, {0x91, 0x00},
+ {REG_HAECC1, 0x00}, {REG_HAECC2, 0x00},
+ {REG_AEW, 0x68}, {REG_AEB, 0x5c},
+ {REG_VPT, 0xc3},
+ {REG_COM9, 0x2e},
+ {0x2a, 0x00}, {0x2b, 0x00},
+
+ {0xff, 0xff}, /* END MARKER */
+};
+
+/* Probe the I2C bus and initialise the sensor chip */
+int stk_sensor_init(struct stk_camera *dev)
+{
+ u8 idl = 0;
+ u8 idh = 0;
+
+ if (stk_camera_write_reg(dev, STK_IIC_ENABLE, STK_IIC_ENABLE_YES)
+ || stk_camera_write_reg(dev, STK_IIC_ADDR, SENSOR_ADDRESS)
+ || stk_sensor_outb(dev, REG_COM7, COM7_RESET)) {
+ pr_err("Sensor resetting failed\n");
+ return -ENODEV;
+ }
+ msleep(10);
+ /* Read the manufacturer ID: ov = 0x7FA2 */
+ if (stk_sensor_inb(dev, REG_MIDH, &idh)
+ || stk_sensor_inb(dev, REG_MIDL, &idl)) {
+ pr_err("Strange error reading sensor ID\n");
+ return -ENODEV;
+ }
+ if (idh != 0x7f || idl != 0xa2) {
+ pr_err("Huh? you don't have a sensor from ovt\n");
+ return -ENODEV;
+ }
+ if (stk_sensor_inb(dev, REG_PID, &idh)
+ || stk_sensor_inb(dev, REG_VER, &idl)) {
+ pr_err("Could not read sensor model\n");
+ return -ENODEV;
+ }
+ stk_sensor_write_regvals(dev, ov_initvals);
+ msleep(10);
+ pr_info("OmniVision sensor detected, id %02X%02X at address %x\n",
+ idh, idl, SENSOR_ADDRESS);
+ return 0;
+}
+
+/* V4L2_PIX_FMT_UYVY */
+static struct regval ov_fmt_uyvy[] = {
+ {REG_TSLB, TSLB_YLAST|0x08 },
+ { 0x4f, 0x80 }, /* "matrix coefficient 1" */
+ { 0x50, 0x80 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x22 }, /* "matrix coefficient 4" */
+ { 0x53, 0x5e }, /* "matrix coefficient 5" */
+ { 0x54, 0x80 }, /* "matrix coefficient 6" */
+ {REG_COM13, COM13_UVSAT|COM13_CMATRIX},
+ {REG_COM15, COM15_R00FF },
+ {0xff, 0xff}, /* END MARKER */
+};
+/* V4L2_PIX_FMT_YUYV */
+static struct regval ov_fmt_yuyv[] = {
+ {REG_TSLB, 0 },
+ { 0x4f, 0x80 }, /* "matrix coefficient 1" */
+ { 0x50, 0x80 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x22 }, /* "matrix coefficient 4" */
+ { 0x53, 0x5e }, /* "matrix coefficient 5" */
+ { 0x54, 0x80 }, /* "matrix coefficient 6" */
+ {REG_COM13, COM13_UVSAT|COM13_CMATRIX},
+ {REG_COM15, COM15_R00FF },
+ {0xff, 0xff}, /* END MARKER */
+};
+
+/* V4L2_PIX_FMT_RGB565X rrrrrggg gggbbbbb */
+static struct regval ov_fmt_rgbr[] = {
+ { REG_RGB444, 0 }, /* No RGB444 please */
+ {REG_TSLB, 0x00},
+ { REG_COM1, 0x0 },
+ { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */
+ { 0x4f, 0xb3 }, /* "matrix coefficient 1" */
+ { 0x50, 0xb3 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x3d }, /* "matrix coefficient 4" */
+ { 0x53, 0xa7 }, /* "matrix coefficient 5" */
+ { 0x54, 0xe4 }, /* "matrix coefficient 6" */
+ { REG_COM13, COM13_GAMMA },
+ { REG_COM15, COM15_RGB565|COM15_R00FF },
+ { 0xff, 0xff },
+};
+
+/* V4L2_PIX_FMT_RGB565 gggbbbbb rrrrrggg */
+static struct regval ov_fmt_rgbp[] = {
+ { REG_RGB444, 0 }, /* No RGB444 please */
+ {REG_TSLB, TSLB_BYTEORD },
+ { REG_COM1, 0x0 },
+ { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */
+ { 0x4f, 0xb3 }, /* "matrix coefficient 1" */
+ { 0x50, 0xb3 }, /* "matrix coefficient 2" */
+ { 0x51, 0 }, /* vb */
+ { 0x52, 0x3d }, /* "matrix coefficient 4" */
+ { 0x53, 0xa7 }, /* "matrix coefficient 5" */
+ { 0x54, 0xe4 }, /* "matrix coefficient 6" */
+ { REG_COM13, COM13_GAMMA },
+ { REG_COM15, COM15_RGB565|COM15_R00FF },
+ { 0xff, 0xff },
+};
+
+/* V4L2_PIX_FMT_SRGGB8 */
+static struct regval ov_fmt_bayer[] = {
+ /* This changes color order */
+ {REG_TSLB, 0x40}, /* BGGR */
+ /* {REG_TSLB, 0x08}, */ /* BGGR with vertical image flipping */
+ {REG_COM15, COM15_R00FF },
+ {0xff, 0xff}, /* END MARKER */
+};
+/*
+ * Store a set of start/stop values into the camera.
+ */
+static int stk_sensor_set_hw(struct stk_camera *dev,
+ int hstart, int hstop, int vstart, int vstop)
+{
+ int ret;
+ unsigned char v;
+/*
+ * Horizontal: 11 bits, top 8 live in hstart and hstop. Bottom 3 of
+ * hstart are in href[2:0], bottom 3 of hstop in href[5:3]. There is
+ * a mystery "edge offset" value in the top two bits of href.
+ */
+ ret = stk_sensor_outb(dev, REG_HSTART, (hstart >> 3) & 0xff);
+ ret += stk_sensor_outb(dev, REG_HSTOP, (hstop >> 3) & 0xff);
+ ret += stk_sensor_inb(dev, REG_HREF, &v);
+ v = (v & 0xc0) | ((hstop & 0x7) << 3) | (hstart & 0x7);
+ msleep(10);
+ ret += stk_sensor_outb(dev, REG_HREF, v);
+/*
+ * Vertical: similar arrangement (note: this is different from ov7670.c)
+ */
+ ret += stk_sensor_outb(dev, REG_VSTART, (vstart >> 3) & 0xff);
+ ret += stk_sensor_outb(dev, REG_VSTOP, (vstop >> 3) & 0xff);
+ ret += stk_sensor_inb(dev, REG_VREF, &v);
+ v = (v & 0xc0) | ((vstop & 0x7) << 3) | (vstart & 0x7);
+ msleep(10);
+ ret += stk_sensor_outb(dev, REG_VREF, v);
+ return ret;
+}
+
+
+int stk_sensor_configure(struct stk_camera *dev)
+{
+ int com7;
+ /*
+ * We setup the sensor to output dummy lines in low-res modes,
+ * so we don't get absurdly hight framerates.
+ */
+ unsigned dummylines;
+ int flip;
+ struct regval *rv;
+
+ switch (dev->vsettings.mode) {
+ case MODE_QCIF: com7 = COM7_FMT_QCIF;
+ dummylines = 604;
+ break;
+ case MODE_QVGA: com7 = COM7_FMT_QVGA;
+ dummylines = 267;
+ break;
+ case MODE_CIF: com7 = COM7_FMT_CIF;
+ dummylines = 412;
+ break;
+ case MODE_VGA: com7 = COM7_FMT_VGA;
+ dummylines = 11;
+ break;
+ case MODE_SXGA: com7 = COM7_FMT_SXGA;
+ dummylines = 0;
+ break;
+ default:
+ pr_err("Unsupported mode %d\n", dev->vsettings.mode);
+ return -EFAULT;
+ }
+ switch (dev->vsettings.palette) {
+ case V4L2_PIX_FMT_UYVY:
+ com7 |= COM7_YUV;
+ rv = ov_fmt_uyvy;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ com7 |= COM7_YUV;
+ rv = ov_fmt_yuyv;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ com7 |= COM7_RGB;
+ rv = ov_fmt_rgbp;
+ break;
+ case V4L2_PIX_FMT_RGB565X:
+ com7 |= COM7_RGB;
+ rv = ov_fmt_rgbr;
+ break;
+ case V4L2_PIX_FMT_SBGGR8:
+ com7 |= COM7_PBAYER;
+ rv = ov_fmt_bayer;
+ break;
+ default:
+ pr_err("Unsupported colorspace\n");
+ return -EFAULT;
+ }
+ /*FIXME sometimes the sensor go to a bad state
+ stk_sensor_write_regvals(dev, ov_initvals); */
+ stk_sensor_outb(dev, REG_COM7, com7);
+ msleep(50);
+ stk_sensor_write_regvals(dev, rv);
+ flip = (dev->vsettings.vflip?MVFP_FLIP:0)
+ | (dev->vsettings.hflip?MVFP_MIRROR:0);
+ stk_sensor_outb(dev, REG_MVFP, flip);
+ if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8
+ && !dev->vsettings.vflip)
+ stk_sensor_outb(dev, REG_TSLB, 0x08);
+ stk_sensor_outb(dev, REG_ADVFH, dummylines >> 8);
+ stk_sensor_outb(dev, REG_ADVFL, dummylines & 0xff);
+ msleep(50);
+ switch (dev->vsettings.mode) {
+ case MODE_VGA:
+ if (stk_sensor_set_hw(dev, 302, 1582, 6, 486))
+ pr_err("stk_sensor_set_hw failed (VGA)\n");
+ break;
+ case MODE_SXGA:
+ case MODE_CIF:
+ case MODE_QVGA:
+ case MODE_QCIF:
+ /*FIXME These settings seem ignored by the sensor
+ if (stk_sensor_set_hw(dev, 220, 1500, 10, 1034))
+ pr_err("stk_sensor_set_hw failed (SXGA)\n");
+ */
+ break;
+ }
+ msleep(10);
+ return 0;
+}
+
+int stk_sensor_set_brightness(struct stk_camera *dev, int br)
+{
+ if (br < 0 || br > 0xff)
+ return -EINVAL;
+ stk_sensor_outb(dev, REG_AEB, max(0x00, br - 6));
+ stk_sensor_outb(dev, REG_AEW, min(0xff, br + 6));
+ return 0;
+}
+
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * stk-webcam.c : Driver for Syntek 1125 USB webcam controller
+ *
+ * Copyright (C) 2006 Nicolas VIVIEN
+ * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
+ *
+ * Some parts are inspired from cafe_ccic.c
+ * Copyright 2006-2007 Jonathan Corbet
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+#include <linux/dmi.h>
+#include <linux/usb.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-event.h>
+
+#include "stk-webcam.h"
+
+
+static int hflip = -1;
+module_param(hflip, int, 0444);
+MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 0");
+
+static int vflip = -1;
+module_param(vflip, int, 0444);
+MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 0");
+
+static int debug;
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0");
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN");
+MODULE_DESCRIPTION("Syntek DC1125 webcam driver");
+
+/* Some cameras have audio interfaces, we aren't interested in those */
+static const struct usb_device_id stkwebcam_table[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) },
+ { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) },
+ { }
+};
+MODULE_DEVICE_TABLE(usb, stkwebcam_table);
+
+/*
+ * The stk webcam laptop module is mounted upside down in some laptops :(
+ *
+ * Some background information (thanks to Hans de Goede for providing this):
+ *
+ * 1) Once upon a time the stkwebcam driver was written
+ *
+ * 2) The webcam in question was used mostly in Asus laptop models, including
+ * the laptop of the original author of the driver, and in these models, in
+ * typical Asus fashion (see the long long list for uvc cams inside v4l-utils),
+ * they mounted the webcam-module the wrong way up. So the hflip and vflip
+ * module options were given a default value of 1 (the correct value for
+ * upside down mounted models)
+ *
+ * 3) Years later I got a bug report from a user with a laptop with stkwebcam,
+ * where the module was actually mounted the right way up, and thus showed
+ * upside down under Linux. So now I was facing the choice of 2 options:
+ *
+ * a) Add a not-upside-down list to stkwebcam, which overrules the default.
+ *
+ * b) Do it like all the other drivers do, and make the default right for
+ * cams mounted the proper way and add an upside-down model list, with
+ * models where we need to flip-by-default.
+ *
+ * Despite knowing that going b) would cause a period of pain where we were
+ * building the table I opted to go for option b), since a) is just too ugly,
+ * and worse different from how every other driver does it leading to
+ * confusion in the long run. This change was made in kernel 3.6.
+ *
+ * So for any user report about upside-down images since kernel 3.6 ask them
+ * to provide the output of 'sudo dmidecode' so the laptop can be added in
+ * the table below.
+ */
+static const struct dmi_system_id stk_upside_down_dmi_table[] = {
+ {
+ .ident = "ASUS G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "G1")
+ }
+ }, {
+ .ident = "ASUS F3JC",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "F3JC")
+ }
+ },
+ {
+ .ident = "T12Rg-H",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HCL Infosystems Limited"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "T12Rg-H")
+ }
+ },
+ {
+ .ident = "ASUS A6VM",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "A6VM")
+ }
+ },
+ {
+ .ident = "ASUS A6JC",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "A6JC")
+ }
+ },
+ {}
+};
+
+
+/*
+ * Basic stuff
+ */
+int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value)
+{
+ struct usb_device *udev = dev->udev;
+ int ret;
+
+ ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ 0x01,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ value,
+ index,
+ NULL,
+ 0,
+ 500);
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+int stk_camera_read_reg(struct stk_camera *dev, u16 index, u8 *value)
+{
+ struct usb_device *udev = dev->udev;
+ int ret;
+
+ ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+ 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0x00,
+ index,
+ &dev->read_reg_scratch,
+ sizeof(u8),
+ 500);
+ if (ret >= 0)
+ *value = dev->read_reg_scratch;
+
+ if (ret < 0)
+ return ret;
+ else
+ return 0;
+}
+
+static int stk_start_stream(struct stk_camera *dev)
+{
+ u8 value;
+ int i, ret;
+ u8 value_116, value_117;
+
+
+ if (!is_present(dev))
+ return -ENODEV;
+ if (!is_memallocd(dev) || !is_initialised(dev)) {
+ pr_err("FIXME: Buffers are not allocated\n");
+ return -EFAULT;
+ }
+ ret = usb_set_interface(dev->udev, 0, 5);
+
+ if (ret < 0)
+ pr_err("usb_set_interface failed !\n");
+ if (stk_sensor_wakeup(dev))
+ pr_err("error awaking the sensor\n");
+
+ stk_camera_read_reg(dev, 0x0116, &value_116);
+ stk_camera_read_reg(dev, 0x0117, &value_117);
+
+ stk_camera_write_reg(dev, 0x0116, 0x0000);
+ stk_camera_write_reg(dev, 0x0117, 0x0000);
+
+ stk_camera_read_reg(dev, 0x0100, &value);
+ stk_camera_write_reg(dev, 0x0100, value | 0x80);
+
+ stk_camera_write_reg(dev, 0x0116, value_116);
+ stk_camera_write_reg(dev, 0x0117, value_117);
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (dev->isobufs[i].urb) {
+ ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL);
+ atomic_inc(&dev->urbs_used);
+ if (ret)
+ return ret;
+ }
+ }
+ set_streaming(dev);
+ return 0;
+}
+
+static int stk_stop_stream(struct stk_camera *dev)
+{
+ u8 value;
+ int i;
+ if (is_present(dev)) {
+ stk_camera_read_reg(dev, 0x0100, &value);
+ stk_camera_write_reg(dev, 0x0100, value & ~0x80);
+ if (dev->isobufs != NULL) {
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (dev->isobufs[i].urb)
+ usb_kill_urb(dev->isobufs[i].urb);
+ }
+ }
+ unset_streaming(dev);
+
+ if (usb_set_interface(dev->udev, 0, 0))
+ pr_err("usb_set_interface failed !\n");
+ if (stk_sensor_sleep(dev))
+ pr_err("error suspending the sensor\n");
+ }
+ return 0;
+}
+
+/*
+ * This seems to be the shortest init sequence we
+ * must do in order to find the sensor
+ * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor
+ * is also reset. Maybe powers down it?
+ * Rest of values don't make a difference
+ */
+
+static struct regval stk1125_initvals[] = {
+ /*TODO: What means this sequence? */
+ {0x0000, 0x24},
+ {0x0100, 0x21},
+ {0x0002, 0x68},
+ {0x0003, 0x80},
+ {0x0005, 0x00},
+ {0x0007, 0x03},
+ {0x000d, 0x00},
+ {0x000f, 0x02},
+ {0x0300, 0x12},
+ {0x0350, 0x41},
+ {0x0351, 0x00},
+ {0x0352, 0x00},
+ {0x0353, 0x00},
+ {0x0018, 0x10},
+ {0x0019, 0x00},
+ {0x001b, 0x0e},
+ {0x001c, 0x46},
+ {0x0300, 0x80},
+ {0x001a, 0x04},
+ {0x0110, 0x00},
+ {0x0111, 0x00},
+ {0x0112, 0x00},
+ {0x0113, 0x00},
+
+ {0xffff, 0xff},
+};
+
+
+static int stk_initialise(struct stk_camera *dev)
+{
+ struct regval *rv;
+ int ret;
+ if (!is_present(dev))
+ return -ENODEV;
+ if (is_initialised(dev))
+ return 0;
+ rv = stk1125_initvals;
+ while (rv->reg != 0xffff) {
+ ret = stk_camera_write_reg(dev, rv->reg, rv->val);
+ if (ret)
+ return ret;
+ rv++;
+ }
+ if (stk_sensor_init(dev) == 0) {
+ set_initialised(dev);
+ return 0;
+ } else
+ return -1;
+}
+
+/* *********************************************** */
+/*
+ * This function is called as an URB transfert is complete (Isochronous pipe).
+ * So, the traitement is done in interrupt time, so it has be fast, not crash,
+ * and not stall. Neat.
+ */
+static void stk_isoc_handler(struct urb *urb)
+{
+ int i;
+ int ret;
+ int framelen;
+ unsigned long flags;
+
+ unsigned char *fill = NULL;
+ unsigned char *iso_buf = NULL;
+
+ struct stk_camera *dev;
+ struct stk_sio_buffer *fb;
+
+ dev = (struct stk_camera *) urb->context;
+
+ if (dev == NULL) {
+ pr_err("isoc_handler called with NULL device !\n");
+ return;
+ }
+
+ if (urb->status == -ENOENT || urb->status == -ECONNRESET
+ || urb->status == -ESHUTDOWN) {
+ atomic_dec(&dev->urbs_used);
+ return;
+ }
+
+ spin_lock_irqsave(&dev->spinlock, flags);
+
+ if (urb->status != -EINPROGRESS && urb->status != 0) {
+ pr_err("isoc_handler: urb->status == %d\n", urb->status);
+ goto resubmit;
+ }
+
+ if (list_empty(&dev->sio_avail)) {
+ /*FIXME Stop streaming after a while */
+ pr_err_ratelimited("isoc_handler without available buffer!\n");
+ goto resubmit;
+ }
+ fb = list_first_entry(&dev->sio_avail,
+ struct stk_sio_buffer, list);
+ fill = fb->buffer + fb->v4lbuf.bytesused;
+
+ for (i = 0; i < urb->number_of_packets; i++) {
+ if (urb->iso_frame_desc[i].status != 0) {
+ if (urb->iso_frame_desc[i].status != -EXDEV)
+ pr_err("Frame %d has error %d\n",
+ i, urb->iso_frame_desc[i].status);
+ continue;
+ }
+ framelen = urb->iso_frame_desc[i].actual_length;
+ iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
+
+ if (framelen <= 4)
+ continue; /* no data */
+
+ /*
+ * we found something informational from there
+ * the isoc frames have to type of headers
+ * type1: 00 xx 00 00 or 20 xx 00 00
+ * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00
+ * xx is a sequencer which has never been seen over 0x3f
+ * imho data written down looks like bayer, i see similarities
+ * after every 640 bytes
+ */
+ if (*iso_buf & 0x80) {
+ framelen -= 8;
+ iso_buf += 8;
+ /* This marks a new frame */
+ if (fb->v4lbuf.bytesused != 0
+ && fb->v4lbuf.bytesused != dev->frame_size) {
+ pr_err_ratelimited("frame %d, bytesused=%d, skipping\n",
+ i, fb->v4lbuf.bytesused);
+ fb->v4lbuf.bytesused = 0;
+ fill = fb->buffer;
+ } else if (fb->v4lbuf.bytesused == dev->frame_size) {
+ if (list_is_singular(&dev->sio_avail)) {
+ /* Always reuse the last buffer */
+ fb->v4lbuf.bytesused = 0;
+ fill = fb->buffer;
+ } else {
+ list_move_tail(dev->sio_avail.next,
+ &dev->sio_full);
+ wake_up(&dev->wait_frame);
+ fb = list_first_entry(&dev->sio_avail,
+ struct stk_sio_buffer, list);
+ fb->v4lbuf.bytesused = 0;
+ fill = fb->buffer;
+ }
+ }
+ } else {
+ framelen -= 4;
+ iso_buf += 4;
+ }
+
+ /* Our buffer is full !!! */
+ if (framelen + fb->v4lbuf.bytesused > dev->frame_size) {
+ pr_err_ratelimited("Frame buffer overflow, lost sync\n");
+ /*FIXME Do something here? */
+ continue;
+ }
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ memcpy(fill, iso_buf, framelen);
+ spin_lock_irqsave(&dev->spinlock, flags);
+ fill += framelen;
+
+ /* New size of our buffer */
+ fb->v4lbuf.bytesused += framelen;
+ }
+
+resubmit:
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ urb->dev = dev->udev;
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret != 0) {
+ pr_err("Error (%d) re-submitting urb in stk_isoc_handler\n",
+ ret);
+ }
+}
+
+/* -------------------------------------------- */
+
+static int stk_prepare_iso(struct stk_camera *dev)
+{
+ void *kbuf;
+ int i, j;
+ struct urb *urb;
+ struct usb_device *udev;
+
+ if (dev == NULL)
+ return -ENXIO;
+ udev = dev->udev;
+
+ if (dev->isobufs)
+ pr_err("isobufs already allocated. Bad\n");
+ else
+ dev->isobufs = kcalloc(MAX_ISO_BUFS, sizeof(*dev->isobufs),
+ GFP_KERNEL);
+ if (dev->isobufs == NULL) {
+ pr_err("Unable to allocate iso buffers\n");
+ return -ENOMEM;
+ }
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ if (dev->isobufs[i].data == NULL) {
+ kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
+ if (kbuf == NULL) {
+ pr_err("Failed to allocate iso buffer %d\n", i);
+ goto isobufs_out;
+ }
+ dev->isobufs[i].data = kbuf;
+ } else
+ pr_err("isobuf data already allocated\n");
+ if (dev->isobufs[i].urb == NULL) {
+ urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
+ if (urb == NULL)
+ goto isobufs_out;
+ dev->isobufs[i].urb = urb;
+ } else {
+ pr_err("Killing URB\n");
+ usb_kill_urb(dev->isobufs[i].urb);
+ urb = dev->isobufs[i].urb;
+ }
+ urb->interval = 1;
+ urb->dev = udev;
+ urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep);
+ urb->transfer_flags = URB_ISO_ASAP;
+ urb->transfer_buffer = dev->isobufs[i].data;
+ urb->transfer_buffer_length = ISO_BUFFER_SIZE;
+ urb->complete = stk_isoc_handler;
+ urb->context = dev;
+ urb->start_frame = 0;
+ urb->number_of_packets = ISO_FRAMES_PER_DESC;
+
+ for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
+ urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
+ urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE;
+ }
+ }
+ set_memallocd(dev);
+ return 0;
+
+isobufs_out:
+ for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++)
+ kfree(dev->isobufs[i].data);
+ for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++)
+ usb_free_urb(dev->isobufs[i].urb);
+ kfree(dev->isobufs);
+ dev->isobufs = NULL;
+ return -ENOMEM;
+}
+
+static void stk_clean_iso(struct stk_camera *dev)
+{
+ int i;
+
+ if (dev == NULL || dev->isobufs == NULL)
+ return;
+
+ for (i = 0; i < MAX_ISO_BUFS; i++) {
+ struct urb *urb;
+
+ urb = dev->isobufs[i].urb;
+ if (urb) {
+ if (atomic_read(&dev->urbs_used) && is_present(dev))
+ usb_kill_urb(urb);
+ usb_free_urb(urb);
+ }
+ kfree(dev->isobufs[i].data);
+ }
+ kfree(dev->isobufs);
+ dev->isobufs = NULL;
+ unset_memallocd(dev);
+}
+
+static int stk_setup_siobuf(struct stk_camera *dev, int index)
+{
+ struct stk_sio_buffer *buf = dev->sio_bufs + index;
+ INIT_LIST_HEAD(&buf->list);
+ buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size);
+ buf->buffer = vmalloc_user(buf->v4lbuf.length);
+ if (buf->buffer == NULL)
+ return -ENOMEM;
+ buf->mapcount = 0;
+ buf->dev = dev;
+ buf->v4lbuf.index = index;
+ buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf->v4lbuf.flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ buf->v4lbuf.field = V4L2_FIELD_NONE;
+ buf->v4lbuf.memory = V4L2_MEMORY_MMAP;
+ buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length;
+ return 0;
+}
+
+static int stk_free_sio_buffers(struct stk_camera *dev)
+{
+ int i;
+ int nbufs;
+ unsigned long flags;
+ if (dev->n_sbufs == 0 || dev->sio_bufs == NULL)
+ return 0;
+ /*
+ * If any buffers are mapped, we cannot free them at all.
+ */
+ for (i = 0; i < dev->n_sbufs; i++) {
+ if (dev->sio_bufs[i].mapcount > 0)
+ return -EBUSY;
+ }
+ /*
+ * OK, let's do it.
+ */
+ spin_lock_irqsave(&dev->spinlock, flags);
+ INIT_LIST_HEAD(&dev->sio_avail);
+ INIT_LIST_HEAD(&dev->sio_full);
+ nbufs = dev->n_sbufs;
+ dev->n_sbufs = 0;
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ for (i = 0; i < nbufs; i++)
+ vfree(dev->sio_bufs[i].buffer);
+ kfree(dev->sio_bufs);
+ dev->sio_bufs = NULL;
+ return 0;
+}
+
+static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs)
+{
+ int i;
+ if (dev->sio_bufs != NULL)
+ pr_err("sio_bufs already allocated\n");
+ else {
+ dev->sio_bufs = kcalloc(n_sbufs,
+ sizeof(struct stk_sio_buffer),
+ GFP_KERNEL);
+ if (dev->sio_bufs == NULL)
+ return -ENOMEM;
+ for (i = 0; i < n_sbufs; i++) {
+ if (stk_setup_siobuf(dev, i))
+ return (dev->n_sbufs > 1 ? 0 : -ENOMEM);
+ dev->n_sbufs = i+1;
+ }
+ }
+ return 0;
+}
+
+static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs)
+{
+ int err;
+ err = stk_prepare_iso(dev);
+ if (err) {
+ stk_clean_iso(dev);
+ return err;
+ }
+ err = stk_prepare_sio_buffers(dev, n_sbufs);
+ if (err) {
+ stk_free_sio_buffers(dev);
+ return err;
+ }
+ return 0;
+}
+
+static void stk_free_buffers(struct stk_camera *dev)
+{
+ stk_clean_iso(dev);
+ stk_free_sio_buffers(dev);
+}
+/* -------------------------------------------- */
+
+/* v4l file operations */
+
+static int v4l_stk_open(struct file *fp)
+{
+ struct stk_camera *dev = video_drvdata(fp);
+ int err;
+
+ if (dev == NULL || !is_present(dev))
+ return -ENXIO;
+
+ if (mutex_lock_interruptible(&dev->lock))
+ return -ERESTARTSYS;
+ if (!dev->first_init)
+ stk_camera_write_reg(dev, 0x0, 0x24);
+ else
+ dev->first_init = 0;
+
+ err = v4l2_fh_open(fp);
+ if (!err)
+ usb_autopm_get_interface(dev->interface);
+ mutex_unlock(&dev->lock);
+ return err;
+}
+
+static int v4l_stk_release(struct file *fp)
+{
+ struct stk_camera *dev = video_drvdata(fp);
+
+ mutex_lock(&dev->lock);
+ if (dev->owner == fp) {
+ stk_stop_stream(dev);
+ stk_free_buffers(dev);
+ stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */
+ unset_initialised(dev);
+ dev->owner = NULL;
+ }
+
+ usb_autopm_put_interface(dev->interface);
+ mutex_unlock(&dev->lock);
+ return v4l2_fh_release(fp);
+}
+
+static ssize_t stk_read(struct file *fp, char __user *buf,
+ size_t count, loff_t *f_pos)
+{
+ int i;
+ int ret;
+ unsigned long flags;
+ struct stk_sio_buffer *sbuf;
+ struct stk_camera *dev = video_drvdata(fp);
+
+ if (!is_present(dev))
+ return -EIO;
+ if (dev->owner && (!dev->reading || dev->owner != fp))
+ return -EBUSY;
+ dev->owner = fp;
+ if (!is_streaming(dev)) {
+ if (stk_initialise(dev)
+ || stk_allocate_buffers(dev, 3)
+ || stk_start_stream(dev))
+ return -ENOMEM;
+ dev->reading = 1;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ for (i = 0; i < dev->n_sbufs; i++) {
+ list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail);
+ dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED;
+ }
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ }
+ if (*f_pos == 0) {
+ if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
+ return -EWOULDBLOCK;
+ ret = wait_event_interruptible(dev->wait_frame,
+ !list_empty(&dev->sio_full) || !is_present(dev));
+ if (ret)
+ return ret;
+ if (!is_present(dev))
+ return -EIO;
+ }
+ if (count + *f_pos > dev->frame_size)
+ count = dev->frame_size - *f_pos;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ if (list_empty(&dev->sio_full)) {
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ pr_err("BUG: No siobufs ready\n");
+ return 0;
+ }
+ sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+
+ if (copy_to_user(buf, sbuf->buffer + *f_pos, count))
+ return -EFAULT;
+
+ *f_pos += count;
+
+ if (*f_pos >= dev->frame_size) {
+ *f_pos = 0;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ list_move_tail(&sbuf->list, &dev->sio_avail);
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ }
+ return count;
+}
+
+static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
+ size_t count, loff_t *f_pos)
+{
+ struct stk_camera *dev = video_drvdata(fp);
+ int ret;
+
+ if (mutex_lock_interruptible(&dev->lock))
+ return -ERESTARTSYS;
+ ret = stk_read(fp, buf, count, f_pos);
+ mutex_unlock(&dev->lock);
+ return ret;
+}
+
+static __poll_t v4l_stk_poll(struct file *fp, poll_table *wait)
+{
+ struct stk_camera *dev = video_drvdata(fp);
+ __poll_t res = v4l2_ctrl_poll(fp, wait);
+
+ poll_wait(fp, &dev->wait_frame, wait);
+
+ if (!is_present(dev))
+ return EPOLLERR;
+
+ if (!list_empty(&dev->sio_full))
+ return res | EPOLLIN | EPOLLRDNORM;
+
+ return res;
+}
+
+
+static void stk_v4l_vm_open(struct vm_area_struct *vma)
+{
+ struct stk_sio_buffer *sbuf = vma->vm_private_data;
+ sbuf->mapcount++;
+}
+static void stk_v4l_vm_close(struct vm_area_struct *vma)
+{
+ struct stk_sio_buffer *sbuf = vma->vm_private_data;
+ sbuf->mapcount--;
+ if (sbuf->mapcount == 0)
+ sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED;
+}
+static const struct vm_operations_struct stk_v4l_vm_ops = {
+ .open = stk_v4l_vm_open,
+ .close = stk_v4l_vm_close
+};
+
+static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma)
+{
+ unsigned int i;
+ int ret;
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+ struct stk_camera *dev = video_drvdata(fp);
+ struct stk_sio_buffer *sbuf = NULL;
+
+ if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
+ return -EINVAL;
+
+ for (i = 0; i < dev->n_sbufs; i++) {
+ if (dev->sio_bufs[i].v4lbuf.m.offset == offset) {
+ sbuf = dev->sio_bufs + i;
+ break;
+ }
+ }
+ if (sbuf == NULL)
+ return -EINVAL;
+ ret = remap_vmalloc_range(vma, sbuf->buffer, 0);
+ if (ret)
+ return ret;
+ vma->vm_flags |= VM_DONTEXPAND;
+ vma->vm_private_data = sbuf;
+ vma->vm_ops = &stk_v4l_vm_ops;
+ sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED;
+ stk_v4l_vm_open(vma);
+ return 0;
+}
+
+/* v4l ioctl handlers */
+
+static int stk_vidioc_querycap(struct file *filp,
+ void *priv, struct v4l2_capability *cap)
+{
+ struct stk_camera *dev = video_drvdata(filp);
+
+ strscpy(cap->driver, "stk", sizeof(cap->driver));
+ strscpy(cap->card, "stk", sizeof(cap->card));
+ usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
+ return 0;
+}
+
+static int stk_vidioc_enum_input(struct file *filp,
+ void *priv, struct v4l2_input *input)
+{
+ if (input->index != 0)
+ return -EINVAL;
+
+ strscpy(input->name, "Syntek USB Camera", sizeof(input->name));
+ input->type = V4L2_INPUT_TYPE_CAMERA;
+ return 0;
+}
+
+
+static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
+{
+ *i = 0;
+ return 0;
+}
+
+static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
+{
+ return i ? -EINVAL : 0;
+}
+
+static int stk_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct stk_camera *dev =
+ container_of(ctrl->handler, struct stk_camera, hdl);
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ return stk_sensor_set_brightness(dev, ctrl->val);
+ case V4L2_CID_HFLIP:
+ if (dmi_check_system(stk_upside_down_dmi_table))
+ dev->vsettings.hflip = !ctrl->val;
+ else
+ dev->vsettings.hflip = ctrl->val;
+ return 0;
+ case V4L2_CID_VFLIP:
+ if (dmi_check_system(stk_upside_down_dmi_table))
+ dev->vsettings.vflip = !ctrl->val;
+ else
+ dev->vsettings.vflip = ctrl->val;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+
+static int stk_vidioc_enum_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_fmtdesc *fmtd)
+{
+ switch (fmtd->index) {
+ case 0:
+ fmtd->pixelformat = V4L2_PIX_FMT_RGB565;
+ break;
+ case 1:
+ fmtd->pixelformat = V4L2_PIX_FMT_RGB565X;
+ break;
+ case 2:
+ fmtd->pixelformat = V4L2_PIX_FMT_UYVY;
+ break;
+ case 3:
+ fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8;
+ break;
+ case 4:
+ fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static struct stk_size {
+ unsigned w;
+ unsigned h;
+ enum stk_mode m;
+} stk_sizes[] = {
+ { .w = 1280, .h = 1024, .m = MODE_SXGA, },
+ { .w = 640, .h = 480, .m = MODE_VGA, },
+ { .w = 352, .h = 288, .m = MODE_CIF, },
+ { .w = 320, .h = 240, .m = MODE_QVGA, },
+ { .w = 176, .h = 144, .m = MODE_QCIF, },
+};
+
+static int stk_vidioc_g_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_format *f)
+{
+ struct v4l2_pix_format *pix_format = &f->fmt.pix;
+ struct stk_camera *dev = video_drvdata(filp);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(stk_sizes) &&
+ stk_sizes[i].m != dev->vsettings.mode; i++)
+ ;
+ if (i == ARRAY_SIZE(stk_sizes)) {
+ pr_err("ERROR: mode invalid\n");
+ return -EINVAL;
+ }
+ pix_format->width = stk_sizes[i].w;
+ pix_format->height = stk_sizes[i].h;
+ pix_format->field = V4L2_FIELD_NONE;
+ pix_format->colorspace = V4L2_COLORSPACE_SRGB;
+ pix_format->pixelformat = dev->vsettings.palette;
+ if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
+ pix_format->bytesperline = pix_format->width;
+ else
+ pix_format->bytesperline = 2 * pix_format->width;
+ pix_format->sizeimage = pix_format->bytesperline
+ * pix_format->height;
+ return 0;
+}
+
+static int stk_try_fmt_vid_cap(struct file *filp,
+ struct v4l2_format *fmtd, int *idx)
+{
+ int i;
+ switch (fmtd->fmt.pix.pixelformat) {
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB565X:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_SBGGR8:
+ break;
+ default:
+ return -EINVAL;
+ }
+ for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) {
+ if (fmtd->fmt.pix.width > stk_sizes[i].w)
+ break;
+ }
+ if (i == ARRAY_SIZE(stk_sizes)
+ || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w)
+ < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) {
+ fmtd->fmt.pix.height = stk_sizes[i-1].h;
+ fmtd->fmt.pix.width = stk_sizes[i-1].w;
+ if (idx)
+ *idx = i - 1;
+ } else {
+ fmtd->fmt.pix.height = stk_sizes[i].h;
+ fmtd->fmt.pix.width = stk_sizes[i].w;
+ if (idx)
+ *idx = i;
+ }
+
+ fmtd->fmt.pix.field = V4L2_FIELD_NONE;
+ fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
+ if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8)
+ fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width;
+ else
+ fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width;
+ fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline
+ * fmtd->fmt.pix.height;
+ return 0;
+}
+
+static int stk_vidioc_try_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_format *fmtd)
+{
+ return stk_try_fmt_vid_cap(filp, fmtd, NULL);
+}
+
+static int stk_setup_format(struct stk_camera *dev)
+{
+ int i = 0;
+ int depth;
+ if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
+ depth = 1;
+ else
+ depth = 2;
+ while (i < ARRAY_SIZE(stk_sizes) &&
+ stk_sizes[i].m != dev->vsettings.mode)
+ i++;
+ if (i == ARRAY_SIZE(stk_sizes)) {
+ pr_err("Something is broken in %s\n", __func__);
+ return -EFAULT;
+ }
+ /* This registers controls some timings, not sure of what. */
+ stk_camera_write_reg(dev, 0x001b, 0x0e);
+ if (dev->vsettings.mode == MODE_SXGA)
+ stk_camera_write_reg(dev, 0x001c, 0x0e);
+ else
+ stk_camera_write_reg(dev, 0x001c, 0x46);
+ /*
+ * Registers 0x0115 0x0114 are the size of each line (bytes),
+ * regs 0x0117 0x0116 are the height of the image.
+ */
+ stk_camera_write_reg(dev, 0x0115,
+ ((stk_sizes[i].w * depth) >> 8) & 0xff);
+ stk_camera_write_reg(dev, 0x0114,
+ (stk_sizes[i].w * depth) & 0xff);
+ stk_camera_write_reg(dev, 0x0117,
+ (stk_sizes[i].h >> 8) & 0xff);
+ stk_camera_write_reg(dev, 0x0116,
+ stk_sizes[i].h & 0xff);
+ return stk_sensor_configure(dev);
+}
+
+static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
+ void *priv, struct v4l2_format *fmtd)
+{
+ int ret;
+ int idx;
+ struct stk_camera *dev = video_drvdata(filp);
+
+ if (dev == NULL)
+ return -ENODEV;
+ if (!is_present(dev))
+ return -ENODEV;
+ if (is_streaming(dev))
+ return -EBUSY;
+ if (dev->owner)
+ return -EBUSY;
+ ret = stk_try_fmt_vid_cap(filp, fmtd, &idx);
+ if (ret)
+ return ret;
+
+ dev->vsettings.palette = fmtd->fmt.pix.pixelformat;
+ stk_free_buffers(dev);
+ dev->frame_size = fmtd->fmt.pix.sizeimage;
+ dev->vsettings.mode = stk_sizes[idx].m;
+
+ stk_initialise(dev);
+ return stk_setup_format(dev);
+}
+
+static int stk_vidioc_reqbufs(struct file *filp,
+ void *priv, struct v4l2_requestbuffers *rb)
+{
+ struct stk_camera *dev = video_drvdata(filp);
+
+ if (dev == NULL)
+ return -ENODEV;
+ if (rb->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+ if (is_streaming(dev)
+ || (dev->owner && dev->owner != filp))
+ return -EBUSY;
+ stk_free_buffers(dev);
+ if (rb->count == 0) {
+ stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */
+ unset_initialised(dev);
+ dev->owner = NULL;
+ return 0;
+ }
+ dev->owner = filp;
+
+ /*FIXME If they ask for zero, we must stop streaming and free */
+ if (rb->count < 3)
+ rb->count = 3;
+ /* Arbitrary limit */
+ else if (rb->count > 5)
+ rb->count = 5;
+
+ stk_allocate_buffers(dev, rb->count);
+ rb->count = dev->n_sbufs;
+ return 0;
+}
+
+static int stk_vidioc_querybuf(struct file *filp,
+ void *priv, struct v4l2_buffer *buf)
+{
+ struct stk_camera *dev = video_drvdata(filp);
+ struct stk_sio_buffer *sbuf;
+
+ if (buf->index >= dev->n_sbufs)
+ return -EINVAL;
+ sbuf = dev->sio_bufs + buf->index;
+ *buf = sbuf->v4lbuf;
+ return 0;
+}
+
+static int stk_vidioc_qbuf(struct file *filp,
+ void *priv, struct v4l2_buffer *buf)
+{
+ struct stk_camera *dev = video_drvdata(filp);
+ struct stk_sio_buffer *sbuf;
+ unsigned long flags;
+
+ if (buf->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+
+ if (buf->index >= dev->n_sbufs)
+ return -EINVAL;
+ sbuf = dev->sio_bufs + buf->index;
+ if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED)
+ return 0;
+ sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED;
+ sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE;
+ spin_lock_irqsave(&dev->spinlock, flags);
+ list_add_tail(&sbuf->list, &dev->sio_avail);
+ *buf = sbuf->v4lbuf;
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ return 0;
+}
+
+static int stk_vidioc_dqbuf(struct file *filp,
+ void *priv, struct v4l2_buffer *buf)
+{
+ struct stk_camera *dev = video_drvdata(filp);
+ struct stk_sio_buffer *sbuf;
+ unsigned long flags;
+ int ret;
+
+ if (!is_streaming(dev))
+ return -EINVAL;
+
+ if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
+ return -EWOULDBLOCK;
+ ret = wait_event_interruptible(dev->wait_frame,
+ !list_empty(&dev->sio_full) || !is_present(dev));
+ if (ret)
+ return ret;
+ if (!is_present(dev))
+ return -EIO;
+
+ spin_lock_irqsave(&dev->spinlock, flags);
+ sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
+ list_del_init(&sbuf->list);
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED;
+ sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE;
+ sbuf->v4lbuf.sequence = ++dev->sequence;
+ v4l2_buffer_set_timestamp(&sbuf->v4lbuf, ktime_get_ns());
+
+ *buf = sbuf->v4lbuf;
+ return 0;
+}
+
+static int stk_vidioc_streamon(struct file *filp,
+ void *priv, enum v4l2_buf_type type)
+{
+ struct stk_camera *dev = video_drvdata(filp);
+ if (is_streaming(dev))
+ return 0;
+ if (dev->sio_bufs == NULL)
+ return -EINVAL;
+ dev->sequence = 0;
+ return stk_start_stream(dev);
+}
+
+static int stk_vidioc_streamoff(struct file *filp,
+ void *priv, enum v4l2_buf_type type)
+{
+ struct stk_camera *dev = video_drvdata(filp);
+ unsigned long flags;
+ int i;
+ stk_stop_stream(dev);
+ spin_lock_irqsave(&dev->spinlock, flags);
+ INIT_LIST_HEAD(&dev->sio_avail);
+ INIT_LIST_HEAD(&dev->sio_full);
+ for (i = 0; i < dev->n_sbufs; i++) {
+ INIT_LIST_HEAD(&dev->sio_bufs[i].list);
+ dev->sio_bufs[i].v4lbuf.flags = 0;
+ }
+ spin_unlock_irqrestore(&dev->spinlock, flags);
+ return 0;
+}
+
+
+static int stk_vidioc_g_parm(struct file *filp,
+ void *priv, struct v4l2_streamparm *sp)
+{
+ /*FIXME This is not correct */
+ sp->parm.capture.timeperframe.numerator = 1;
+ sp->parm.capture.timeperframe.denominator = 30;
+ sp->parm.capture.readbuffers = 2;
+ return 0;
+}
+
+static int stk_vidioc_enum_framesizes(struct file *filp,
+ void *priv, struct v4l2_frmsizeenum *frms)
+{
+ if (frms->index >= ARRAY_SIZE(stk_sizes))
+ return -EINVAL;
+ switch (frms->pixel_format) {
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB565X:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_SBGGR8:
+ frms->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ frms->discrete.width = stk_sizes[frms->index].w;
+ frms->discrete.height = stk_sizes[frms->index].h;
+ return 0;
+ default: return -EINVAL;
+ }
+}
+
+static const struct v4l2_ctrl_ops stk_ctrl_ops = {
+ .s_ctrl = stk_s_ctrl,
+};
+
+static const struct v4l2_file_operations v4l_stk_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l_stk_open,
+ .release = v4l_stk_release,
+ .read = v4l_stk_read,
+ .poll = v4l_stk_poll,
+ .mmap = v4l_stk_mmap,
+ .unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
+ .vidioc_querycap = stk_vidioc_querycap,
+ .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap,
+ .vidioc_enum_input = stk_vidioc_enum_input,
+ .vidioc_s_input = stk_vidioc_s_input,
+ .vidioc_g_input = stk_vidioc_g_input,
+ .vidioc_reqbufs = stk_vidioc_reqbufs,
+ .vidioc_querybuf = stk_vidioc_querybuf,
+ .vidioc_qbuf = stk_vidioc_qbuf,
+ .vidioc_dqbuf = stk_vidioc_dqbuf,
+ .vidioc_streamon = stk_vidioc_streamon,
+ .vidioc_streamoff = stk_vidioc_streamoff,
+ .vidioc_g_parm = stk_vidioc_g_parm,
+ .vidioc_enum_framesizes = stk_vidioc_enum_framesizes,
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static void stk_v4l_dev_release(struct video_device *vd)
+{
+ struct stk_camera *dev = vdev_to_camera(vd);
+
+ if (dev->sio_bufs != NULL || dev->isobufs != NULL)
+ pr_err("We are leaking memory\n");
+ usb_put_intf(dev->interface);
+ usb_put_dev(dev->udev);
+
+ v4l2_ctrl_handler_free(&dev->hdl);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ kfree(dev);
+}
+
+static const struct video_device stk_v4l_data = {
+ .name = "stkwebcam",
+ .fops = &v4l_stk_fops,
+ .ioctl_ops = &v4l_stk_ioctl_ops,
+ .release = stk_v4l_dev_release,
+};
+
+
+static int stk_register_video_device(struct stk_camera *dev)
+{
+ int err;
+
+ dev->vdev = stk_v4l_data;
+ dev->vdev.lock = &dev->lock;
+ dev->vdev.v4l2_dev = &dev->v4l2_dev;
+ dev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
+ V4L2_CAP_STREAMING;
+ video_set_drvdata(&dev->vdev, dev);
+ err = video_register_device(&dev->vdev, VFL_TYPE_VIDEO, -1);
+ if (err)
+ pr_err("v4l registration failed\n");
+ else
+ pr_info("Syntek USB2.0 Camera is now controlling device %s\n",
+ video_device_node_name(&dev->vdev));
+ return err;
+}
+
+
+/* USB Stuff */
+
+static int stk_camera_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct v4l2_ctrl_handler *hdl;
+ int err = 0;
+ int i;
+
+ struct stk_camera *dev = NULL;
+ struct usb_device *udev = interface_to_usbdev(interface);
+ struct usb_host_interface *iface_desc;
+ struct usb_endpoint_descriptor *endpoint;
+
+ dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL);
+ if (dev == NULL) {
+ pr_err("Out of memory !\n");
+ return -ENOMEM;
+ }
+ err = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
+ if (err < 0) {
+ dev_err(&udev->dev, "couldn't register v4l2_device\n");
+ kfree(dev);
+ return err;
+ }
+ hdl = &dev->hdl;
+ v4l2_ctrl_handler_init(hdl, 3);
+ v4l2_ctrl_new_std(hdl, &stk_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 0xff, 0x1, 0x60);
+ v4l2_ctrl_new_std(hdl, &stk_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 1);
+ v4l2_ctrl_new_std(hdl, &stk_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 1);
+ if (hdl->error) {
+ err = hdl->error;
+ dev_err(&udev->dev, "couldn't register control\n");
+ goto error;
+ }
+ dev->v4l2_dev.ctrl_handler = hdl;
+
+ spin_lock_init(&dev->spinlock);
+ mutex_init(&dev->lock);
+ init_waitqueue_head(&dev->wait_frame);
+ dev->first_init = 1; /* webcam LED management */
+
+ dev->udev = usb_get_dev(udev);
+ dev->interface = interface;
+ usb_get_intf(interface);
+
+ if (hflip != -1)
+ dev->vsettings.hflip = hflip;
+ else if (dmi_check_system(stk_upside_down_dmi_table))
+ dev->vsettings.hflip = 1;
+ else
+ dev->vsettings.hflip = 0;
+ if (vflip != -1)
+ dev->vsettings.vflip = vflip;
+ else if (dmi_check_system(stk_upside_down_dmi_table))
+ dev->vsettings.vflip = 1;
+ else
+ dev->vsettings.vflip = 0;
+ dev->n_sbufs = 0;
+ set_present(dev);
+
+ /* Set up the endpoint information
+ * use only the first isoc-in endpoint
+ * for the current alternate setting */
+ iface_desc = interface->cur_altsetting;
+
+ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+ endpoint = &iface_desc->endpoint[i].desc;
+
+ if (!dev->isoc_ep
+ && usb_endpoint_is_isoc_in(endpoint)) {
+ /* we found an isoc in endpoint */
+ dev->isoc_ep = usb_endpoint_num(endpoint);
+ break;
+ }
+ }
+ if (!dev->isoc_ep) {
+ pr_err("Could not find isoc-in endpoint\n");
+ err = -ENODEV;
+ goto error_put;
+ }
+ dev->vsettings.palette = V4L2_PIX_FMT_RGB565;
+ dev->vsettings.mode = MODE_VGA;
+ dev->frame_size = 640 * 480 * 2;
+
+ INIT_LIST_HEAD(&dev->sio_avail);
+ INIT_LIST_HEAD(&dev->sio_full);
+
+ usb_set_intfdata(interface, dev);
+
+ err = stk_register_video_device(dev);
+ if (err)
+ goto error_put;
+
+ return 0;
+
+error_put:
+ usb_put_intf(interface);
+ usb_put_dev(dev->udev);
+error:
+ v4l2_ctrl_handler_free(hdl);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ kfree(dev);
+ return err;
+}
+
+static void stk_camera_disconnect(struct usb_interface *interface)
+{
+ struct stk_camera *dev = usb_get_intfdata(interface);
+
+ usb_set_intfdata(interface, NULL);
+ unset_present(dev);
+
+ wake_up_interruptible(&dev->wait_frame);
+
+ pr_info("Syntek USB2.0 Camera release resources device %s\n",
+ video_device_node_name(&dev->vdev));
+
+ video_unregister_device(&dev->vdev);
+}
+
+#ifdef CONFIG_PM
+static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct stk_camera *dev = usb_get_intfdata(intf);
+ if (is_streaming(dev)) {
+ stk_stop_stream(dev);
+ /* yes, this is ugly */
+ set_streaming(dev);
+ }
+ return 0;
+}
+
+static int stk_camera_resume(struct usb_interface *intf)
+{
+ struct stk_camera *dev = usb_get_intfdata(intf);
+ if (!is_initialised(dev))
+ return 0;
+ unset_initialised(dev);
+ stk_initialise(dev);
+ stk_camera_write_reg(dev, 0x0, 0x49);
+ stk_setup_format(dev);
+ if (is_streaming(dev))
+ stk_start_stream(dev);
+ return 0;
+}
+#endif
+
+static struct usb_driver stk_camera_driver = {
+ .name = "stkwebcam",
+ .probe = stk_camera_probe,
+ .disconnect = stk_camera_disconnect,
+ .id_table = stkwebcam_table,
+#ifdef CONFIG_PM
+ .suspend = stk_camera_suspend,
+ .resume = stk_camera_resume,
+#endif
+};
+
+module_usb_driver(stk_camera_driver);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * stk-webcam.h : Driver for Syntek 1125 USB webcam controller
+ *
+ * Copyright (C) 2006 Nicolas VIVIEN
+ * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
+ */
+
+#ifndef STKWEBCAM_H
+#define STKWEBCAM_H
+
+#include <linux/usb.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-common.h>
+
+#define DRIVER_VERSION "v0.0.1"
+#define DRIVER_VERSION_NUM 0x000001
+
+#define MAX_ISO_BUFS 3
+#define ISO_FRAMES_PER_DESC 16
+#define ISO_MAX_FRAME_SIZE 3 * 1024
+#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
+
+struct stk_iso_buf {
+ void *data;
+ int length;
+ int read;
+ struct urb *urb;
+};
+
+/* Streaming IO buffers */
+struct stk_sio_buffer {
+ struct v4l2_buffer v4lbuf;
+ char *buffer;
+ int mapcount;
+ struct stk_camera *dev;
+ struct list_head list;
+};
+
+enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF};
+
+struct stk_video {
+ enum stk_mode mode;
+ __u32 palette;
+ int hflip;
+ int vflip;
+};
+
+enum stk_status {
+ S_PRESENT = 1,
+ S_INITIALISED = 2,
+ S_MEMALLOCD = 4,
+ S_STREAMING = 8,
+};
+#define is_present(dev) ((dev)->status & S_PRESENT)
+#define is_initialised(dev) ((dev)->status & S_INITIALISED)
+#define is_streaming(dev) ((dev)->status & S_STREAMING)
+#define is_memallocd(dev) ((dev)->status & S_MEMALLOCD)
+#define set_present(dev) ((dev)->status = S_PRESENT)
+#define unset_present(dev) ((dev)->status &= \
+ ~(S_PRESENT|S_INITIALISED|S_STREAMING))
+#define set_initialised(dev) ((dev)->status |= S_INITIALISED)
+#define unset_initialised(dev) ((dev)->status &= ~S_INITIALISED)
+#define set_memallocd(dev) ((dev)->status |= S_MEMALLOCD)
+#define unset_memallocd(dev) ((dev)->status &= ~S_MEMALLOCD)
+#define set_streaming(dev) ((dev)->status |= S_STREAMING)
+#define unset_streaming(dev) ((dev)->status &= ~S_STREAMING)
+
+struct regval {
+ unsigned reg;
+ unsigned val;
+};
+
+struct stk_camera {
+ struct v4l2_device v4l2_dev;
+ struct v4l2_ctrl_handler hdl;
+ struct video_device vdev;
+ struct usb_device *udev;
+ struct usb_interface *interface;
+ int webcam_model;
+ struct file *owner;
+ struct mutex lock;
+ int first_init;
+
+ u8 isoc_ep;
+
+ /* Not sure if this is right */
+ atomic_t urbs_used;
+
+ struct stk_video vsettings;
+
+ enum stk_status status;
+
+ spinlock_t spinlock;
+ wait_queue_head_t wait_frame;
+
+ struct stk_iso_buf *isobufs;
+
+ int frame_size;
+ /* Streaming buffers */
+ int reading;
+ unsigned int n_sbufs;
+ struct stk_sio_buffer *sio_bufs;
+ struct list_head sio_avail;
+ struct list_head sio_full;
+ unsigned sequence;
+
+ u8 read_reg_scratch;
+};
+
+#define vdev_to_camera(d) container_of(d, struct stk_camera, vdev)
+
+int stk_camera_write_reg(struct stk_camera *, u16, u8);
+int stk_camera_read_reg(struct stk_camera *, u16, u8 *);
+
+int stk_sensor_init(struct stk_camera *);
+int stk_sensor_configure(struct stk_camera *);
+int stk_sensor_sleep(struct stk_camera *dev);
+int stk_sensor_wakeup(struct stk_camera *dev);
+int stk_sensor_set_brightness(struct stk_camera *dev, int br);
+
+#endif
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0-only
-config VIDEO_STKWEBCAM
- tristate "USB Syntek DC1125 Camera support (DEPRECATED)"
- depends on VIDEO_DEV
- depends on USB
- help
- Say Y here if you want to use this type of camera.
- Supported devices are typically found in some Asus laptops,
- with USB id 174f:a311 and 05e1:0501. Other Syntek cameras
- may be supported by the stk11xx driver, from which this is
- derived, see <http://sourceforge.net/projects/syntekdriver/>
-
- This driver is deprecated and is scheduled for removal by
- the end of 2022. See the TODO file for more information.
-
- To compile this driver as a module, choose M here: the
- module will be called stkwebcam.
-
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0-only
-stkwebcam-objs := stk-webcam.o stk-sensor.o
-
-obj-$(CONFIG_VIDEO_STKWEBCAM) += stkwebcam.o
-
+++ /dev/null
-This is a very old driver for very old hardware (specifically
-laptops that use this sensor). In addition according to reports
-the picture quality is quite bad.
-
-This is also one of the few drivers still not using the vb2
-framework (or even the old videobuf framework!), so this driver
-is now deprecated with the intent of removing it altogether by
-the end of 2022.
-
-In order to keep this driver it has to be converted to vb2.
-If someone is interested in doing this work, then contact the
-linux-media mailinglist (https://linuxtv.org/lists.php).
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/* stk-sensor.c: Driver for ov96xx sensor (used in some Syntek webcams)
- *
- * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
- *
- * Some parts derived from ov7670.c:
- * Copyright 2006 One Laptop Per Child Association, Inc. Written
- * by Jonathan Corbet with substantial inspiration from Mark
- * McClelland's ovcamchip code.
- *
- * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
- *
- * This file may be distributed under the terms of the GNU General
- */
-
-/* Controlling the sensor via the STK1125 vendor specific control interface:
- * The camera uses an OmniVision sensor and the stk1125 provides an
- * SCCB(i2c)-USB bridge which let us program the sensor.
- * In my case the sensor id is 0x9652, it can be read from sensor's register
- * 0x0A and 0x0B as follows:
- * - read register #R:
- * output #R to index 0x0208
- * output 0x0070 to index 0x0200
- * input 1 byte from index 0x0201 (some kind of status register)
- * until its value is 0x01
- * input 1 byte from index 0x0209. This is the value of #R
- * - write value V to register #R
- * output #R to index 0x0204
- * output V to index 0x0205
- * output 0x0005 to index 0x0200
- * input 1 byte from index 0x0201 until its value becomes 0x04
- */
-
-/* It seems the i2c bus is controlled with these registers */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include "stk-webcam.h"
-
-#define STK_IIC_BASE (0x0200)
-# define STK_IIC_OP (STK_IIC_BASE)
-# define STK_IIC_OP_TX (0x05)
-# define STK_IIC_OP_RX (0x70)
-# define STK_IIC_STAT (STK_IIC_BASE+1)
-# define STK_IIC_STAT_TX_OK (0x04)
-# define STK_IIC_STAT_RX_OK (0x01)
-/* I don't know what does this register.
- * when it is 0x00 or 0x01, we cannot talk to the sensor,
- * other values work */
-# define STK_IIC_ENABLE (STK_IIC_BASE+2)
-# define STK_IIC_ENABLE_NO (0x00)
-/* This is what the driver writes in windows */
-# define STK_IIC_ENABLE_YES (0x1e)
-/*
- * Address of the slave. Seems like the binary driver look for the
- * sensor in multiple places, attempting a reset sequence.
- * We only know about the ov9650
- */
-# define STK_IIC_ADDR (STK_IIC_BASE+3)
-# define STK_IIC_TX_INDEX (STK_IIC_BASE+4)
-# define STK_IIC_TX_VALUE (STK_IIC_BASE+5)
-# define STK_IIC_RX_INDEX (STK_IIC_BASE+8)
-# define STK_IIC_RX_VALUE (STK_IIC_BASE+9)
-
-#define MAX_RETRIES (50)
-
-#define SENSOR_ADDRESS (0x60)
-
-/* From ov7670.c (These registers aren't fully accurate) */
-
-/* Registers */
-#define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */
-#define REG_BLUE 0x01 /* blue gain */
-#define REG_RED 0x02 /* red gain */
-#define REG_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */
-#define REG_COM1 0x04 /* Control 1 */
-#define COM1_CCIR656 0x40 /* CCIR656 enable */
-#define COM1_QFMT 0x20 /* QVGA/QCIF format */
-#define COM1_SKIP_0 0x00 /* Do not skip any row */
-#define COM1_SKIP_2 0x04 /* Skip 2 rows of 4 */
-#define COM1_SKIP_3 0x08 /* Skip 3 rows of 4 */
-#define REG_BAVE 0x05 /* U/B Average level */
-#define REG_GbAVE 0x06 /* Y/Gb Average level */
-#define REG_AECHH 0x07 /* AEC MS 5 bits */
-#define REG_RAVE 0x08 /* V/R Average level */
-#define REG_COM2 0x09 /* Control 2 */
-#define COM2_SSLEEP 0x10 /* Soft sleep mode */
-#define REG_PID 0x0a /* Product ID MSB */
-#define REG_VER 0x0b /* Product ID LSB */
-#define REG_COM3 0x0c /* Control 3 */
-#define COM3_SWAP 0x40 /* Byte swap */
-#define COM3_SCALEEN 0x08 /* Enable scaling */
-#define COM3_DCWEN 0x04 /* Enable downsamp/crop/window */
-#define REG_COM4 0x0d /* Control 4 */
-#define REG_COM5 0x0e /* All "reserved" */
-#define REG_COM6 0x0f /* Control 6 */
-#define REG_AECH 0x10 /* More bits of AEC value */
-#define REG_CLKRC 0x11 /* Clock control */
-#define CLK_PLL 0x80 /* Enable internal PLL */
-#define CLK_EXT 0x40 /* Use external clock directly */
-#define CLK_SCALE 0x3f /* Mask for internal clock scale */
-#define REG_COM7 0x12 /* Control 7 */
-#define COM7_RESET 0x80 /* Register reset */
-#define COM7_FMT_MASK 0x38
-#define COM7_FMT_SXGA 0x00
-#define COM7_FMT_VGA 0x40
-#define COM7_FMT_CIF 0x20 /* CIF format */
-#define COM7_FMT_QVGA 0x10 /* QVGA format */
-#define COM7_FMT_QCIF 0x08 /* QCIF format */
-#define COM7_RGB 0x04 /* bits 0 and 2 - RGB format */
-#define COM7_YUV 0x00 /* YUV */
-#define COM7_BAYER 0x01 /* Bayer format */
-#define COM7_PBAYER 0x05 /* "Processed bayer" */
-#define REG_COM8 0x13 /* Control 8 */
-#define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */
-#define COM8_AECSTEP 0x40 /* Unlimited AEC step size */
-#define COM8_BFILT 0x20 /* Band filter enable */
-#define COM8_AGC 0x04 /* Auto gain enable */
-#define COM8_AWB 0x02 /* White balance enable */
-#define COM8_AEC 0x01 /* Auto exposure enable */
-#define REG_COM9 0x14 /* Control 9 - gain ceiling */
-#define REG_COM10 0x15 /* Control 10 */
-#define COM10_HSYNC 0x40 /* HSYNC instead of HREF */
-#define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */
-#define COM10_HREF_REV 0x08 /* Reverse HREF */
-#define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */
-#define COM10_VS_NEG 0x02 /* VSYNC negative */
-#define COM10_HS_NEG 0x01 /* HSYNC negative */
-#define REG_HSTART 0x17 /* Horiz start high bits */
-#define REG_HSTOP 0x18 /* Horiz stop high bits */
-#define REG_VSTART 0x19 /* Vert start high bits */
-#define REG_VSTOP 0x1a /* Vert stop high bits */
-#define REG_PSHFT 0x1b /* Pixel delay after HREF */
-#define REG_MIDH 0x1c /* Manuf. ID high */
-#define REG_MIDL 0x1d /* Manuf. ID low */
-#define REG_MVFP 0x1e /* Mirror / vflip */
-#define MVFP_MIRROR 0x20 /* Mirror image */
-#define MVFP_FLIP 0x10 /* Vertical flip */
-
-#define REG_AEW 0x24 /* AGC upper limit */
-#define REG_AEB 0x25 /* AGC lower limit */
-#define REG_VPT 0x26 /* AGC/AEC fast mode op region */
-#define REG_ADVFL 0x2d /* Insert dummy lines (LSB) */
-#define REG_ADVFH 0x2e /* Insert dummy lines (MSB) */
-#define REG_HSYST 0x30 /* HSYNC rising edge delay */
-#define REG_HSYEN 0x31 /* HSYNC falling edge delay */
-#define REG_HREF 0x32 /* HREF pieces */
-#define REG_TSLB 0x3a /* lots of stuff */
-#define TSLB_YLAST 0x04 /* UYVY or VYUY - see com13 */
-#define TSLB_BYTEORD 0x08 /* swap bytes in 16bit mode? */
-#define REG_COM11 0x3b /* Control 11 */
-#define COM11_NIGHT 0x80 /* NIght mode enable */
-#define COM11_NMFR 0x60 /* Two bit NM frame rate */
-#define COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */
-#define COM11_50HZ 0x08 /* Manual 50Hz select */
-#define COM11_EXP 0x02
-#define REG_COM12 0x3c /* Control 12 */
-#define COM12_HREF 0x80 /* HREF always */
-#define REG_COM13 0x3d /* Control 13 */
-#define COM13_GAMMA 0x80 /* Gamma enable */
-#define COM13_UVSAT 0x40 /* UV saturation auto adjustment */
-#define COM13_CMATRIX 0x10 /* Enable color matrix for RGB or YUV */
-#define COM13_UVSWAP 0x01 /* V before U - w/TSLB */
-#define REG_COM14 0x3e /* Control 14 */
-#define COM14_DCWEN 0x10 /* DCW/PCLK-scale enable */
-#define REG_EDGE 0x3f /* Edge enhancement factor */
-#define REG_COM15 0x40 /* Control 15 */
-#define COM15_R10F0 0x00 /* Data range 10 to F0 */
-#define COM15_R01FE 0x80 /* 01 to FE */
-#define COM15_R00FF 0xc0 /* 00 to FF */
-#define COM15_RGB565 0x10 /* RGB565 output */
-#define COM15_RGBFIXME 0x20 /* FIXME */
-#define COM15_RGB555 0x30 /* RGB555 output */
-#define REG_COM16 0x41 /* Control 16 */
-#define COM16_AWBGAIN 0x08 /* AWB gain enable */
-#define REG_COM17 0x42 /* Control 17 */
-#define COM17_AECWIN 0xc0 /* AEC window - must match COM4 */
-#define COM17_CBAR 0x08 /* DSP Color bar */
-
-/*
- * This matrix defines how the colors are generated, must be
- * tweaked to adjust hue and saturation.
- *
- * Order: v-red, v-green, v-blue, u-red, u-green, u-blue
- *
- * They are nine-bit signed quantities, with the sign bit
- * stored in 0x58. Sign for v-red is bit 0, and up from there.
- */
-#define REG_CMATRIX_BASE 0x4f
-#define CMATRIX_LEN 6
-#define REG_CMATRIX_SIGN 0x58
-
-
-#define REG_BRIGHT 0x55 /* Brightness */
-#define REG_CONTRAS 0x56 /* Contrast control */
-
-#define REG_GFIX 0x69 /* Fix gain control */
-
-#define REG_RGB444 0x8c /* RGB 444 control */
-#define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */
-#define R444_RGBX 0x01 /* Empty nibble at end */
-
-#define REG_HAECC1 0x9f /* Hist AEC/AGC control 1 */
-#define REG_HAECC2 0xa0 /* Hist AEC/AGC control 2 */
-
-#define REG_BD50MAX 0xa5 /* 50hz banding step limit */
-#define REG_HAECC3 0xa6 /* Hist AEC/AGC control 3 */
-#define REG_HAECC4 0xa7 /* Hist AEC/AGC control 4 */
-#define REG_HAECC5 0xa8 /* Hist AEC/AGC control 5 */
-#define REG_HAECC6 0xa9 /* Hist AEC/AGC control 6 */
-#define REG_HAECC7 0xaa /* Hist AEC/AGC control 7 */
-#define REG_BD60MAX 0xab /* 60hz banding step limit */
-
-
-
-
-/* Returns 0 if OK */
-static int stk_sensor_outb(struct stk_camera *dev, u8 reg, u8 val)
-{
- int i = 0;
- u8 tmpval = 0;
-
- if (stk_camera_write_reg(dev, STK_IIC_TX_INDEX, reg))
- return 1;
- if (stk_camera_write_reg(dev, STK_IIC_TX_VALUE, val))
- return 1;
- if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_TX))
- return 1;
- do {
- if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval))
- return 1;
- i++;
- } while (tmpval == 0 && i < MAX_RETRIES);
- if (tmpval != STK_IIC_STAT_TX_OK) {
- if (tmpval)
- pr_err("stk_sensor_outb failed, status=0x%02x\n",
- tmpval);
- return 1;
- } else
- return 0;
-}
-
-static int stk_sensor_inb(struct stk_camera *dev, u8 reg, u8 *val)
-{
- int i = 0;
- u8 tmpval = 0;
-
- if (stk_camera_write_reg(dev, STK_IIC_RX_INDEX, reg))
- return 1;
- if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_RX))
- return 1;
- do {
- if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval))
- return 1;
- i++;
- } while (tmpval == 0 && i < MAX_RETRIES);
- if (tmpval != STK_IIC_STAT_RX_OK) {
- if (tmpval)
- pr_err("stk_sensor_inb failed, status=0x%02x\n",
- tmpval);
- return 1;
- }
-
- if (stk_camera_read_reg(dev, STK_IIC_RX_VALUE, &tmpval))
- return 1;
-
- *val = tmpval;
- return 0;
-}
-
-static int stk_sensor_write_regvals(struct stk_camera *dev,
- struct regval *rv)
-{
- int ret;
- if (rv == NULL)
- return 0;
- while (rv->reg != 0xff || rv->val != 0xff) {
- ret = stk_sensor_outb(dev, rv->reg, rv->val);
- if (ret != 0)
- return ret;
- rv++;
- }
- return 0;
-}
-
-int stk_sensor_sleep(struct stk_camera *dev)
-{
- u8 tmp;
- return stk_sensor_inb(dev, REG_COM2, &tmp)
- || stk_sensor_outb(dev, REG_COM2, tmp|COM2_SSLEEP);
-}
-
-int stk_sensor_wakeup(struct stk_camera *dev)
-{
- u8 tmp;
- return stk_sensor_inb(dev, REG_COM2, &tmp)
- || stk_sensor_outb(dev, REG_COM2, tmp&~COM2_SSLEEP);
-}
-
-static struct regval ov_initvals[] = {
- {REG_CLKRC, CLK_PLL},
- {REG_COM11, 0x01},
- {0x6a, 0x7d},
- {REG_AECH, 0x40},
- {REG_GAIN, 0x00},
- {REG_BLUE, 0x80},
- {REG_RED, 0x80},
- /* Do not enable fast AEC for now */
- /*{REG_COM8, COM8_FASTAEC|COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC},*/
- {REG_COM8, COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC},
- {0x39, 0x50}, {0x38, 0x93},
- {0x37, 0x00}, {0x35, 0x81},
- {REG_COM5, 0x20},
- {REG_COM1, 0x00},
- {REG_COM3, 0x00},
- {REG_COM4, 0x00},
- {REG_PSHFT, 0x00},
- {0x16, 0x07},
- {0x33, 0xe2}, {0x34, 0xbf},
- {REG_COM16, 0x00},
- {0x96, 0x04},
- /* Gamma curve values */
-/* { 0x7a, 0x20 }, { 0x7b, 0x10 },
- { 0x7c, 0x1e }, { 0x7d, 0x35 },
- { 0x7e, 0x5a }, { 0x7f, 0x69 },
- { 0x80, 0x76 }, { 0x81, 0x80 },
- { 0x82, 0x88 }, { 0x83, 0x8f },
- { 0x84, 0x96 }, { 0x85, 0xa3 },
- { 0x86, 0xaf }, { 0x87, 0xc4 },
- { 0x88, 0xd7 }, { 0x89, 0xe8 },
-*/
- {REG_GFIX, 0x40},
- {0x8e, 0x00},
- {REG_COM12, 0x73},
- {0x8f, 0xdf}, {0x8b, 0x06},
- {0x8c, 0x20},
- {0x94, 0x88}, {0x95, 0x88},
-/* {REG_COM15, 0xc1}, TODO */
- {0x29, 0x3f},
- {REG_COM6, 0x42},
- {REG_BD50MAX, 0x80},
- {REG_HAECC6, 0xb8}, {REG_HAECC7, 0x92},
- {REG_BD60MAX, 0x0a},
- {0x90, 0x00}, {0x91, 0x00},
- {REG_HAECC1, 0x00}, {REG_HAECC2, 0x00},
- {REG_AEW, 0x68}, {REG_AEB, 0x5c},
- {REG_VPT, 0xc3},
- {REG_COM9, 0x2e},
- {0x2a, 0x00}, {0x2b, 0x00},
-
- {0xff, 0xff}, /* END MARKER */
-};
-
-/* Probe the I2C bus and initialise the sensor chip */
-int stk_sensor_init(struct stk_camera *dev)
-{
- u8 idl = 0;
- u8 idh = 0;
-
- if (stk_camera_write_reg(dev, STK_IIC_ENABLE, STK_IIC_ENABLE_YES)
- || stk_camera_write_reg(dev, STK_IIC_ADDR, SENSOR_ADDRESS)
- || stk_sensor_outb(dev, REG_COM7, COM7_RESET)) {
- pr_err("Sensor resetting failed\n");
- return -ENODEV;
- }
- msleep(10);
- /* Read the manufacturer ID: ov = 0x7FA2 */
- if (stk_sensor_inb(dev, REG_MIDH, &idh)
- || stk_sensor_inb(dev, REG_MIDL, &idl)) {
- pr_err("Strange error reading sensor ID\n");
- return -ENODEV;
- }
- if (idh != 0x7f || idl != 0xa2) {
- pr_err("Huh? you don't have a sensor from ovt\n");
- return -ENODEV;
- }
- if (stk_sensor_inb(dev, REG_PID, &idh)
- || stk_sensor_inb(dev, REG_VER, &idl)) {
- pr_err("Could not read sensor model\n");
- return -ENODEV;
- }
- stk_sensor_write_regvals(dev, ov_initvals);
- msleep(10);
- pr_info("OmniVision sensor detected, id %02X%02X at address %x\n",
- idh, idl, SENSOR_ADDRESS);
- return 0;
-}
-
-/* V4L2_PIX_FMT_UYVY */
-static struct regval ov_fmt_uyvy[] = {
- {REG_TSLB, TSLB_YLAST|0x08 },
- { 0x4f, 0x80 }, /* "matrix coefficient 1" */
- { 0x50, 0x80 }, /* "matrix coefficient 2" */
- { 0x51, 0 }, /* vb */
- { 0x52, 0x22 }, /* "matrix coefficient 4" */
- { 0x53, 0x5e }, /* "matrix coefficient 5" */
- { 0x54, 0x80 }, /* "matrix coefficient 6" */
- {REG_COM13, COM13_UVSAT|COM13_CMATRIX},
- {REG_COM15, COM15_R00FF },
- {0xff, 0xff}, /* END MARKER */
-};
-/* V4L2_PIX_FMT_YUYV */
-static struct regval ov_fmt_yuyv[] = {
- {REG_TSLB, 0 },
- { 0x4f, 0x80 }, /* "matrix coefficient 1" */
- { 0x50, 0x80 }, /* "matrix coefficient 2" */
- { 0x51, 0 }, /* vb */
- { 0x52, 0x22 }, /* "matrix coefficient 4" */
- { 0x53, 0x5e }, /* "matrix coefficient 5" */
- { 0x54, 0x80 }, /* "matrix coefficient 6" */
- {REG_COM13, COM13_UVSAT|COM13_CMATRIX},
- {REG_COM15, COM15_R00FF },
- {0xff, 0xff}, /* END MARKER */
-};
-
-/* V4L2_PIX_FMT_RGB565X rrrrrggg gggbbbbb */
-static struct regval ov_fmt_rgbr[] = {
- { REG_RGB444, 0 }, /* No RGB444 please */
- {REG_TSLB, 0x00},
- { REG_COM1, 0x0 },
- { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */
- { 0x4f, 0xb3 }, /* "matrix coefficient 1" */
- { 0x50, 0xb3 }, /* "matrix coefficient 2" */
- { 0x51, 0 }, /* vb */
- { 0x52, 0x3d }, /* "matrix coefficient 4" */
- { 0x53, 0xa7 }, /* "matrix coefficient 5" */
- { 0x54, 0xe4 }, /* "matrix coefficient 6" */
- { REG_COM13, COM13_GAMMA },
- { REG_COM15, COM15_RGB565|COM15_R00FF },
- { 0xff, 0xff },
-};
-
-/* V4L2_PIX_FMT_RGB565 gggbbbbb rrrrrggg */
-static struct regval ov_fmt_rgbp[] = {
- { REG_RGB444, 0 }, /* No RGB444 please */
- {REG_TSLB, TSLB_BYTEORD },
- { REG_COM1, 0x0 },
- { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */
- { 0x4f, 0xb3 }, /* "matrix coefficient 1" */
- { 0x50, 0xb3 }, /* "matrix coefficient 2" */
- { 0x51, 0 }, /* vb */
- { 0x52, 0x3d }, /* "matrix coefficient 4" */
- { 0x53, 0xa7 }, /* "matrix coefficient 5" */
- { 0x54, 0xe4 }, /* "matrix coefficient 6" */
- { REG_COM13, COM13_GAMMA },
- { REG_COM15, COM15_RGB565|COM15_R00FF },
- { 0xff, 0xff },
-};
-
-/* V4L2_PIX_FMT_SRGGB8 */
-static struct regval ov_fmt_bayer[] = {
- /* This changes color order */
- {REG_TSLB, 0x40}, /* BGGR */
- /* {REG_TSLB, 0x08}, */ /* BGGR with vertical image flipping */
- {REG_COM15, COM15_R00FF },
- {0xff, 0xff}, /* END MARKER */
-};
-/*
- * Store a set of start/stop values into the camera.
- */
-static int stk_sensor_set_hw(struct stk_camera *dev,
- int hstart, int hstop, int vstart, int vstop)
-{
- int ret;
- unsigned char v;
-/*
- * Horizontal: 11 bits, top 8 live in hstart and hstop. Bottom 3 of
- * hstart are in href[2:0], bottom 3 of hstop in href[5:3]. There is
- * a mystery "edge offset" value in the top two bits of href.
- */
- ret = stk_sensor_outb(dev, REG_HSTART, (hstart >> 3) & 0xff);
- ret += stk_sensor_outb(dev, REG_HSTOP, (hstop >> 3) & 0xff);
- ret += stk_sensor_inb(dev, REG_HREF, &v);
- v = (v & 0xc0) | ((hstop & 0x7) << 3) | (hstart & 0x7);
- msleep(10);
- ret += stk_sensor_outb(dev, REG_HREF, v);
-/*
- * Vertical: similar arrangement (note: this is different from ov7670.c)
- */
- ret += stk_sensor_outb(dev, REG_VSTART, (vstart >> 3) & 0xff);
- ret += stk_sensor_outb(dev, REG_VSTOP, (vstop >> 3) & 0xff);
- ret += stk_sensor_inb(dev, REG_VREF, &v);
- v = (v & 0xc0) | ((vstop & 0x7) << 3) | (vstart & 0x7);
- msleep(10);
- ret += stk_sensor_outb(dev, REG_VREF, v);
- return ret;
-}
-
-
-int stk_sensor_configure(struct stk_camera *dev)
-{
- int com7;
- /*
- * We setup the sensor to output dummy lines in low-res modes,
- * so we don't get absurdly hight framerates.
- */
- unsigned dummylines;
- int flip;
- struct regval *rv;
-
- switch (dev->vsettings.mode) {
- case MODE_QCIF: com7 = COM7_FMT_QCIF;
- dummylines = 604;
- break;
- case MODE_QVGA: com7 = COM7_FMT_QVGA;
- dummylines = 267;
- break;
- case MODE_CIF: com7 = COM7_FMT_CIF;
- dummylines = 412;
- break;
- case MODE_VGA: com7 = COM7_FMT_VGA;
- dummylines = 11;
- break;
- case MODE_SXGA: com7 = COM7_FMT_SXGA;
- dummylines = 0;
- break;
- default:
- pr_err("Unsupported mode %d\n", dev->vsettings.mode);
- return -EFAULT;
- }
- switch (dev->vsettings.palette) {
- case V4L2_PIX_FMT_UYVY:
- com7 |= COM7_YUV;
- rv = ov_fmt_uyvy;
- break;
- case V4L2_PIX_FMT_YUYV:
- com7 |= COM7_YUV;
- rv = ov_fmt_yuyv;
- break;
- case V4L2_PIX_FMT_RGB565:
- com7 |= COM7_RGB;
- rv = ov_fmt_rgbp;
- break;
- case V4L2_PIX_FMT_RGB565X:
- com7 |= COM7_RGB;
- rv = ov_fmt_rgbr;
- break;
- case V4L2_PIX_FMT_SBGGR8:
- com7 |= COM7_PBAYER;
- rv = ov_fmt_bayer;
- break;
- default:
- pr_err("Unsupported colorspace\n");
- return -EFAULT;
- }
- /*FIXME sometimes the sensor go to a bad state
- stk_sensor_write_regvals(dev, ov_initvals); */
- stk_sensor_outb(dev, REG_COM7, com7);
- msleep(50);
- stk_sensor_write_regvals(dev, rv);
- flip = (dev->vsettings.vflip?MVFP_FLIP:0)
- | (dev->vsettings.hflip?MVFP_MIRROR:0);
- stk_sensor_outb(dev, REG_MVFP, flip);
- if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8
- && !dev->vsettings.vflip)
- stk_sensor_outb(dev, REG_TSLB, 0x08);
- stk_sensor_outb(dev, REG_ADVFH, dummylines >> 8);
- stk_sensor_outb(dev, REG_ADVFL, dummylines & 0xff);
- msleep(50);
- switch (dev->vsettings.mode) {
- case MODE_VGA:
- if (stk_sensor_set_hw(dev, 302, 1582, 6, 486))
- pr_err("stk_sensor_set_hw failed (VGA)\n");
- break;
- case MODE_SXGA:
- case MODE_CIF:
- case MODE_QVGA:
- case MODE_QCIF:
- /*FIXME These settings seem ignored by the sensor
- if (stk_sensor_set_hw(dev, 220, 1500, 10, 1034))
- pr_err("stk_sensor_set_hw failed (SXGA)\n");
- */
- break;
- }
- msleep(10);
- return 0;
-}
-
-int stk_sensor_set_brightness(struct stk_camera *dev, int br)
-{
- if (br < 0 || br > 0xff)
- return -EINVAL;
- stk_sensor_outb(dev, REG_AEB, max(0x00, br - 6));
- stk_sensor_outb(dev, REG_AEW, min(0xff, br + 6));
- return 0;
-}
-
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * stk-webcam.c : Driver for Syntek 1125 USB webcam controller
- *
- * Copyright (C) 2006 Nicolas VIVIEN
- * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
- *
- * Some parts are inspired from cafe_ccic.c
- * Copyright 2006-2007 Jonathan Corbet
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-
-#include <linux/dmi.h>
-#include <linux/usb.h>
-#include <linux/mm.h>
-#include <linux/vmalloc.h>
-#include <linux/videodev2.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-event.h>
-
-#include "stk-webcam.h"
-
-
-static int hflip = -1;
-module_param(hflip, int, 0444);
-MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 0");
-
-static int vflip = -1;
-module_param(vflip, int, 0444);
-MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 0");
-
-static int debug;
-module_param(debug, int, 0444);
-MODULE_PARM_DESC(debug, "Debug v4l ioctls. Defaults to 0");
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jaime Velasco Juan <jsagarribay@gmail.com> and Nicolas VIVIEN");
-MODULE_DESCRIPTION("Syntek DC1125 webcam driver");
-
-/* Some cameras have audio interfaces, we aren't interested in those */
-static const struct usb_device_id stkwebcam_table[] = {
- { USB_DEVICE_AND_INTERFACE_INFO(0x174f, 0xa311, 0xff, 0xff, 0xff) },
- { USB_DEVICE_AND_INTERFACE_INFO(0x05e1, 0x0501, 0xff, 0xff, 0xff) },
- { }
-};
-MODULE_DEVICE_TABLE(usb, stkwebcam_table);
-
-/*
- * The stk webcam laptop module is mounted upside down in some laptops :(
- *
- * Some background information (thanks to Hans de Goede for providing this):
- *
- * 1) Once upon a time the stkwebcam driver was written
- *
- * 2) The webcam in question was used mostly in Asus laptop models, including
- * the laptop of the original author of the driver, and in these models, in
- * typical Asus fashion (see the long long list for uvc cams inside v4l-utils),
- * they mounted the webcam-module the wrong way up. So the hflip and vflip
- * module options were given a default value of 1 (the correct value for
- * upside down mounted models)
- *
- * 3) Years later I got a bug report from a user with a laptop with stkwebcam,
- * where the module was actually mounted the right way up, and thus showed
- * upside down under Linux. So now I was facing the choice of 2 options:
- *
- * a) Add a not-upside-down list to stkwebcam, which overrules the default.
- *
- * b) Do it like all the other drivers do, and make the default right for
- * cams mounted the proper way and add an upside-down model list, with
- * models where we need to flip-by-default.
- *
- * Despite knowing that going b) would cause a period of pain where we were
- * building the table I opted to go for option b), since a) is just too ugly,
- * and worse different from how every other driver does it leading to
- * confusion in the long run. This change was made in kernel 3.6.
- *
- * So for any user report about upside-down images since kernel 3.6 ask them
- * to provide the output of 'sudo dmidecode' so the laptop can be added in
- * the table below.
- */
-static const struct dmi_system_id stk_upside_down_dmi_table[] = {
- {
- .ident = "ASUS G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "G1")
- }
- }, {
- .ident = "ASUS F3JC",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "F3JC")
- }
- },
- {
- .ident = "T12Rg-H",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HCL Infosystems Limited"),
- DMI_MATCH(DMI_PRODUCT_NAME, "T12Rg-H")
- }
- },
- {
- .ident = "ASUS A6VM",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "A6VM")
- }
- },
- {
- .ident = "ASUS A6JC",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "A6JC")
- }
- },
- {}
-};
-
-
-/*
- * Basic stuff
- */
-int stk_camera_write_reg(struct stk_camera *dev, u16 index, u8 value)
-{
- struct usb_device *udev = dev->udev;
- int ret;
-
- ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
- 0x01,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- value,
- index,
- NULL,
- 0,
- 500);
- if (ret < 0)
- return ret;
- else
- return 0;
-}
-
-int stk_camera_read_reg(struct stk_camera *dev, u16 index, u8 *value)
-{
- struct usb_device *udev = dev->udev;
- int ret;
-
- ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
- 0x00,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0x00,
- index,
- &dev->read_reg_scratch,
- sizeof(u8),
- 500);
- if (ret >= 0)
- *value = dev->read_reg_scratch;
-
- if (ret < 0)
- return ret;
- else
- return 0;
-}
-
-static int stk_start_stream(struct stk_camera *dev)
-{
- u8 value;
- int i, ret;
- u8 value_116, value_117;
-
-
- if (!is_present(dev))
- return -ENODEV;
- if (!is_memallocd(dev) || !is_initialised(dev)) {
- pr_err("FIXME: Buffers are not allocated\n");
- return -EFAULT;
- }
- ret = usb_set_interface(dev->udev, 0, 5);
-
- if (ret < 0)
- pr_err("usb_set_interface failed !\n");
- if (stk_sensor_wakeup(dev))
- pr_err("error awaking the sensor\n");
-
- stk_camera_read_reg(dev, 0x0116, &value_116);
- stk_camera_read_reg(dev, 0x0117, &value_117);
-
- stk_camera_write_reg(dev, 0x0116, 0x0000);
- stk_camera_write_reg(dev, 0x0117, 0x0000);
-
- stk_camera_read_reg(dev, 0x0100, &value);
- stk_camera_write_reg(dev, 0x0100, value | 0x80);
-
- stk_camera_write_reg(dev, 0x0116, value_116);
- stk_camera_write_reg(dev, 0x0117, value_117);
- for (i = 0; i < MAX_ISO_BUFS; i++) {
- if (dev->isobufs[i].urb) {
- ret = usb_submit_urb(dev->isobufs[i].urb, GFP_KERNEL);
- atomic_inc(&dev->urbs_used);
- if (ret)
- return ret;
- }
- }
- set_streaming(dev);
- return 0;
-}
-
-static int stk_stop_stream(struct stk_camera *dev)
-{
- u8 value;
- int i;
- if (is_present(dev)) {
- stk_camera_read_reg(dev, 0x0100, &value);
- stk_camera_write_reg(dev, 0x0100, value & ~0x80);
- if (dev->isobufs != NULL) {
- for (i = 0; i < MAX_ISO_BUFS; i++) {
- if (dev->isobufs[i].urb)
- usb_kill_urb(dev->isobufs[i].urb);
- }
- }
- unset_streaming(dev);
-
- if (usb_set_interface(dev->udev, 0, 0))
- pr_err("usb_set_interface failed !\n");
- if (stk_sensor_sleep(dev))
- pr_err("error suspending the sensor\n");
- }
- return 0;
-}
-
-/*
- * This seems to be the shortest init sequence we
- * must do in order to find the sensor
- * Bit 5 of reg. 0x0000 here is important, when reset to 0 the sensor
- * is also reset. Maybe powers down it?
- * Rest of values don't make a difference
- */
-
-static struct regval stk1125_initvals[] = {
- /*TODO: What means this sequence? */
- {0x0000, 0x24},
- {0x0100, 0x21},
- {0x0002, 0x68},
- {0x0003, 0x80},
- {0x0005, 0x00},
- {0x0007, 0x03},
- {0x000d, 0x00},
- {0x000f, 0x02},
- {0x0300, 0x12},
- {0x0350, 0x41},
- {0x0351, 0x00},
- {0x0352, 0x00},
- {0x0353, 0x00},
- {0x0018, 0x10},
- {0x0019, 0x00},
- {0x001b, 0x0e},
- {0x001c, 0x46},
- {0x0300, 0x80},
- {0x001a, 0x04},
- {0x0110, 0x00},
- {0x0111, 0x00},
- {0x0112, 0x00},
- {0x0113, 0x00},
-
- {0xffff, 0xff},
-};
-
-
-static int stk_initialise(struct stk_camera *dev)
-{
- struct regval *rv;
- int ret;
- if (!is_present(dev))
- return -ENODEV;
- if (is_initialised(dev))
- return 0;
- rv = stk1125_initvals;
- while (rv->reg != 0xffff) {
- ret = stk_camera_write_reg(dev, rv->reg, rv->val);
- if (ret)
- return ret;
- rv++;
- }
- if (stk_sensor_init(dev) == 0) {
- set_initialised(dev);
- return 0;
- } else
- return -1;
-}
-
-/* *********************************************** */
-/*
- * This function is called as an URB transfert is complete (Isochronous pipe).
- * So, the traitement is done in interrupt time, so it has be fast, not crash,
- * and not stall. Neat.
- */
-static void stk_isoc_handler(struct urb *urb)
-{
- int i;
- int ret;
- int framelen;
- unsigned long flags;
-
- unsigned char *fill = NULL;
- unsigned char *iso_buf = NULL;
-
- struct stk_camera *dev;
- struct stk_sio_buffer *fb;
-
- dev = (struct stk_camera *) urb->context;
-
- if (dev == NULL) {
- pr_err("isoc_handler called with NULL device !\n");
- return;
- }
-
- if (urb->status == -ENOENT || urb->status == -ECONNRESET
- || urb->status == -ESHUTDOWN) {
- atomic_dec(&dev->urbs_used);
- return;
- }
-
- spin_lock_irqsave(&dev->spinlock, flags);
-
- if (urb->status != -EINPROGRESS && urb->status != 0) {
- pr_err("isoc_handler: urb->status == %d\n", urb->status);
- goto resubmit;
- }
-
- if (list_empty(&dev->sio_avail)) {
- /*FIXME Stop streaming after a while */
- pr_err_ratelimited("isoc_handler without available buffer!\n");
- goto resubmit;
- }
- fb = list_first_entry(&dev->sio_avail,
- struct stk_sio_buffer, list);
- fill = fb->buffer + fb->v4lbuf.bytesused;
-
- for (i = 0; i < urb->number_of_packets; i++) {
- if (urb->iso_frame_desc[i].status != 0) {
- if (urb->iso_frame_desc[i].status != -EXDEV)
- pr_err("Frame %d has error %d\n",
- i, urb->iso_frame_desc[i].status);
- continue;
- }
- framelen = urb->iso_frame_desc[i].actual_length;
- iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
-
- if (framelen <= 4)
- continue; /* no data */
-
- /*
- * we found something informational from there
- * the isoc frames have to type of headers
- * type1: 00 xx 00 00 or 20 xx 00 00
- * type2: 80 xx 00 00 00 00 00 00 or a0 xx 00 00 00 00 00 00
- * xx is a sequencer which has never been seen over 0x3f
- * imho data written down looks like bayer, i see similarities
- * after every 640 bytes
- */
- if (*iso_buf & 0x80) {
- framelen -= 8;
- iso_buf += 8;
- /* This marks a new frame */
- if (fb->v4lbuf.bytesused != 0
- && fb->v4lbuf.bytesused != dev->frame_size) {
- pr_err_ratelimited("frame %d, bytesused=%d, skipping\n",
- i, fb->v4lbuf.bytesused);
- fb->v4lbuf.bytesused = 0;
- fill = fb->buffer;
- } else if (fb->v4lbuf.bytesused == dev->frame_size) {
- if (list_is_singular(&dev->sio_avail)) {
- /* Always reuse the last buffer */
- fb->v4lbuf.bytesused = 0;
- fill = fb->buffer;
- } else {
- list_move_tail(dev->sio_avail.next,
- &dev->sio_full);
- wake_up(&dev->wait_frame);
- fb = list_first_entry(&dev->sio_avail,
- struct stk_sio_buffer, list);
- fb->v4lbuf.bytesused = 0;
- fill = fb->buffer;
- }
- }
- } else {
- framelen -= 4;
- iso_buf += 4;
- }
-
- /* Our buffer is full !!! */
- if (framelen + fb->v4lbuf.bytesused > dev->frame_size) {
- pr_err_ratelimited("Frame buffer overflow, lost sync\n");
- /*FIXME Do something here? */
- continue;
- }
- spin_unlock_irqrestore(&dev->spinlock, flags);
- memcpy(fill, iso_buf, framelen);
- spin_lock_irqsave(&dev->spinlock, flags);
- fill += framelen;
-
- /* New size of our buffer */
- fb->v4lbuf.bytesused += framelen;
- }
-
-resubmit:
- spin_unlock_irqrestore(&dev->spinlock, flags);
- urb->dev = dev->udev;
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret != 0) {
- pr_err("Error (%d) re-submitting urb in stk_isoc_handler\n",
- ret);
- }
-}
-
-/* -------------------------------------------- */
-
-static int stk_prepare_iso(struct stk_camera *dev)
-{
- void *kbuf;
- int i, j;
- struct urb *urb;
- struct usb_device *udev;
-
- if (dev == NULL)
- return -ENXIO;
- udev = dev->udev;
-
- if (dev->isobufs)
- pr_err("isobufs already allocated. Bad\n");
- else
- dev->isobufs = kcalloc(MAX_ISO_BUFS, sizeof(*dev->isobufs),
- GFP_KERNEL);
- if (dev->isobufs == NULL) {
- pr_err("Unable to allocate iso buffers\n");
- return -ENOMEM;
- }
- for (i = 0; i < MAX_ISO_BUFS; i++) {
- if (dev->isobufs[i].data == NULL) {
- kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL);
- if (kbuf == NULL) {
- pr_err("Failed to allocate iso buffer %d\n", i);
- goto isobufs_out;
- }
- dev->isobufs[i].data = kbuf;
- } else
- pr_err("isobuf data already allocated\n");
- if (dev->isobufs[i].urb == NULL) {
- urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
- if (urb == NULL)
- goto isobufs_out;
- dev->isobufs[i].urb = urb;
- } else {
- pr_err("Killing URB\n");
- usb_kill_urb(dev->isobufs[i].urb);
- urb = dev->isobufs[i].urb;
- }
- urb->interval = 1;
- urb->dev = udev;
- urb->pipe = usb_rcvisocpipe(udev, dev->isoc_ep);
- urb->transfer_flags = URB_ISO_ASAP;
- urb->transfer_buffer = dev->isobufs[i].data;
- urb->transfer_buffer_length = ISO_BUFFER_SIZE;
- urb->complete = stk_isoc_handler;
- urb->context = dev;
- urb->start_frame = 0;
- urb->number_of_packets = ISO_FRAMES_PER_DESC;
-
- for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
- urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
- urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE;
- }
- }
- set_memallocd(dev);
- return 0;
-
-isobufs_out:
- for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].data; i++)
- kfree(dev->isobufs[i].data);
- for (i = 0; i < MAX_ISO_BUFS && dev->isobufs[i].urb; i++)
- usb_free_urb(dev->isobufs[i].urb);
- kfree(dev->isobufs);
- dev->isobufs = NULL;
- return -ENOMEM;
-}
-
-static void stk_clean_iso(struct stk_camera *dev)
-{
- int i;
-
- if (dev == NULL || dev->isobufs == NULL)
- return;
-
- for (i = 0; i < MAX_ISO_BUFS; i++) {
- struct urb *urb;
-
- urb = dev->isobufs[i].urb;
- if (urb) {
- if (atomic_read(&dev->urbs_used) && is_present(dev))
- usb_kill_urb(urb);
- usb_free_urb(urb);
- }
- kfree(dev->isobufs[i].data);
- }
- kfree(dev->isobufs);
- dev->isobufs = NULL;
- unset_memallocd(dev);
-}
-
-static int stk_setup_siobuf(struct stk_camera *dev, int index)
-{
- struct stk_sio_buffer *buf = dev->sio_bufs + index;
- INIT_LIST_HEAD(&buf->list);
- buf->v4lbuf.length = PAGE_ALIGN(dev->frame_size);
- buf->buffer = vmalloc_user(buf->v4lbuf.length);
- if (buf->buffer == NULL)
- return -ENOMEM;
- buf->mapcount = 0;
- buf->dev = dev;
- buf->v4lbuf.index = index;
- buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- buf->v4lbuf.flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- buf->v4lbuf.field = V4L2_FIELD_NONE;
- buf->v4lbuf.memory = V4L2_MEMORY_MMAP;
- buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length;
- return 0;
-}
-
-static int stk_free_sio_buffers(struct stk_camera *dev)
-{
- int i;
- int nbufs;
- unsigned long flags;
- if (dev->n_sbufs == 0 || dev->sio_bufs == NULL)
- return 0;
- /*
- * If any buffers are mapped, we cannot free them at all.
- */
- for (i = 0; i < dev->n_sbufs; i++) {
- if (dev->sio_bufs[i].mapcount > 0)
- return -EBUSY;
- }
- /*
- * OK, let's do it.
- */
- spin_lock_irqsave(&dev->spinlock, flags);
- INIT_LIST_HEAD(&dev->sio_avail);
- INIT_LIST_HEAD(&dev->sio_full);
- nbufs = dev->n_sbufs;
- dev->n_sbufs = 0;
- spin_unlock_irqrestore(&dev->spinlock, flags);
- for (i = 0; i < nbufs; i++)
- vfree(dev->sio_bufs[i].buffer);
- kfree(dev->sio_bufs);
- dev->sio_bufs = NULL;
- return 0;
-}
-
-static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs)
-{
- int i;
- if (dev->sio_bufs != NULL)
- pr_err("sio_bufs already allocated\n");
- else {
- dev->sio_bufs = kcalloc(n_sbufs,
- sizeof(struct stk_sio_buffer),
- GFP_KERNEL);
- if (dev->sio_bufs == NULL)
- return -ENOMEM;
- for (i = 0; i < n_sbufs; i++) {
- if (stk_setup_siobuf(dev, i))
- return (dev->n_sbufs > 1 ? 0 : -ENOMEM);
- dev->n_sbufs = i+1;
- }
- }
- return 0;
-}
-
-static int stk_allocate_buffers(struct stk_camera *dev, unsigned n_sbufs)
-{
- int err;
- err = stk_prepare_iso(dev);
- if (err) {
- stk_clean_iso(dev);
- return err;
- }
- err = stk_prepare_sio_buffers(dev, n_sbufs);
- if (err) {
- stk_free_sio_buffers(dev);
- return err;
- }
- return 0;
-}
-
-static void stk_free_buffers(struct stk_camera *dev)
-{
- stk_clean_iso(dev);
- stk_free_sio_buffers(dev);
-}
-/* -------------------------------------------- */
-
-/* v4l file operations */
-
-static int v4l_stk_open(struct file *fp)
-{
- struct stk_camera *dev = video_drvdata(fp);
- int err;
-
- if (dev == NULL || !is_present(dev))
- return -ENXIO;
-
- if (mutex_lock_interruptible(&dev->lock))
- return -ERESTARTSYS;
- if (!dev->first_init)
- stk_camera_write_reg(dev, 0x0, 0x24);
- else
- dev->first_init = 0;
-
- err = v4l2_fh_open(fp);
- if (!err)
- usb_autopm_get_interface(dev->interface);
- mutex_unlock(&dev->lock);
- return err;
-}
-
-static int v4l_stk_release(struct file *fp)
-{
- struct stk_camera *dev = video_drvdata(fp);
-
- mutex_lock(&dev->lock);
- if (dev->owner == fp) {
- stk_stop_stream(dev);
- stk_free_buffers(dev);
- stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */
- unset_initialised(dev);
- dev->owner = NULL;
- }
-
- usb_autopm_put_interface(dev->interface);
- mutex_unlock(&dev->lock);
- return v4l2_fh_release(fp);
-}
-
-static ssize_t stk_read(struct file *fp, char __user *buf,
- size_t count, loff_t *f_pos)
-{
- int i;
- int ret;
- unsigned long flags;
- struct stk_sio_buffer *sbuf;
- struct stk_camera *dev = video_drvdata(fp);
-
- if (!is_present(dev))
- return -EIO;
- if (dev->owner && (!dev->reading || dev->owner != fp))
- return -EBUSY;
- dev->owner = fp;
- if (!is_streaming(dev)) {
- if (stk_initialise(dev)
- || stk_allocate_buffers(dev, 3)
- || stk_start_stream(dev))
- return -ENOMEM;
- dev->reading = 1;
- spin_lock_irqsave(&dev->spinlock, flags);
- for (i = 0; i < dev->n_sbufs; i++) {
- list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail);
- dev->sio_bufs[i].v4lbuf.flags = V4L2_BUF_FLAG_QUEUED;
- }
- spin_unlock_irqrestore(&dev->spinlock, flags);
- }
- if (*f_pos == 0) {
- if (fp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
- return -EWOULDBLOCK;
- ret = wait_event_interruptible(dev->wait_frame,
- !list_empty(&dev->sio_full) || !is_present(dev));
- if (ret)
- return ret;
- if (!is_present(dev))
- return -EIO;
- }
- if (count + *f_pos > dev->frame_size)
- count = dev->frame_size - *f_pos;
- spin_lock_irqsave(&dev->spinlock, flags);
- if (list_empty(&dev->sio_full)) {
- spin_unlock_irqrestore(&dev->spinlock, flags);
- pr_err("BUG: No siobufs ready\n");
- return 0;
- }
- sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
- spin_unlock_irqrestore(&dev->spinlock, flags);
-
- if (copy_to_user(buf, sbuf->buffer + *f_pos, count))
- return -EFAULT;
-
- *f_pos += count;
-
- if (*f_pos >= dev->frame_size) {
- *f_pos = 0;
- spin_lock_irqsave(&dev->spinlock, flags);
- list_move_tail(&sbuf->list, &dev->sio_avail);
- spin_unlock_irqrestore(&dev->spinlock, flags);
- }
- return count;
-}
-
-static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
- size_t count, loff_t *f_pos)
-{
- struct stk_camera *dev = video_drvdata(fp);
- int ret;
-
- if (mutex_lock_interruptible(&dev->lock))
- return -ERESTARTSYS;
- ret = stk_read(fp, buf, count, f_pos);
- mutex_unlock(&dev->lock);
- return ret;
-}
-
-static __poll_t v4l_stk_poll(struct file *fp, poll_table *wait)
-{
- struct stk_camera *dev = video_drvdata(fp);
- __poll_t res = v4l2_ctrl_poll(fp, wait);
-
- poll_wait(fp, &dev->wait_frame, wait);
-
- if (!is_present(dev))
- return EPOLLERR;
-
- if (!list_empty(&dev->sio_full))
- return res | EPOLLIN | EPOLLRDNORM;
-
- return res;
-}
-
-
-static void stk_v4l_vm_open(struct vm_area_struct *vma)
-{
- struct stk_sio_buffer *sbuf = vma->vm_private_data;
- sbuf->mapcount++;
-}
-static void stk_v4l_vm_close(struct vm_area_struct *vma)
-{
- struct stk_sio_buffer *sbuf = vma->vm_private_data;
- sbuf->mapcount--;
- if (sbuf->mapcount == 0)
- sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED;
-}
-static const struct vm_operations_struct stk_v4l_vm_ops = {
- .open = stk_v4l_vm_open,
- .close = stk_v4l_vm_close
-};
-
-static int v4l_stk_mmap(struct file *fp, struct vm_area_struct *vma)
-{
- unsigned int i;
- int ret;
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
- struct stk_camera *dev = video_drvdata(fp);
- struct stk_sio_buffer *sbuf = NULL;
-
- if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
- return -EINVAL;
-
- for (i = 0; i < dev->n_sbufs; i++) {
- if (dev->sio_bufs[i].v4lbuf.m.offset == offset) {
- sbuf = dev->sio_bufs + i;
- break;
- }
- }
- if (sbuf == NULL)
- return -EINVAL;
- ret = remap_vmalloc_range(vma, sbuf->buffer, 0);
- if (ret)
- return ret;
- vma->vm_flags |= VM_DONTEXPAND;
- vma->vm_private_data = sbuf;
- vma->vm_ops = &stk_v4l_vm_ops;
- sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED;
- stk_v4l_vm_open(vma);
- return 0;
-}
-
-/* v4l ioctl handlers */
-
-static int stk_vidioc_querycap(struct file *filp,
- void *priv, struct v4l2_capability *cap)
-{
- struct stk_camera *dev = video_drvdata(filp);
-
- strscpy(cap->driver, "stk", sizeof(cap->driver));
- strscpy(cap->card, "stk", sizeof(cap->card));
- usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
- return 0;
-}
-
-static int stk_vidioc_enum_input(struct file *filp,
- void *priv, struct v4l2_input *input)
-{
- if (input->index != 0)
- return -EINVAL;
-
- strscpy(input->name, "Syntek USB Camera", sizeof(input->name));
- input->type = V4L2_INPUT_TYPE_CAMERA;
- return 0;
-}
-
-
-static int stk_vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
-{
- *i = 0;
- return 0;
-}
-
-static int stk_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
-{
- return i ? -EINVAL : 0;
-}
-
-static int stk_s_ctrl(struct v4l2_ctrl *ctrl)
-{
- struct stk_camera *dev =
- container_of(ctrl->handler, struct stk_camera, hdl);
-
- switch (ctrl->id) {
- case V4L2_CID_BRIGHTNESS:
- return stk_sensor_set_brightness(dev, ctrl->val);
- case V4L2_CID_HFLIP:
- if (dmi_check_system(stk_upside_down_dmi_table))
- dev->vsettings.hflip = !ctrl->val;
- else
- dev->vsettings.hflip = ctrl->val;
- return 0;
- case V4L2_CID_VFLIP:
- if (dmi_check_system(stk_upside_down_dmi_table))
- dev->vsettings.vflip = !ctrl->val;
- else
- dev->vsettings.vflip = ctrl->val;
- return 0;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-
-static int stk_vidioc_enum_fmt_vid_cap(struct file *filp,
- void *priv, struct v4l2_fmtdesc *fmtd)
-{
- switch (fmtd->index) {
- case 0:
- fmtd->pixelformat = V4L2_PIX_FMT_RGB565;
- break;
- case 1:
- fmtd->pixelformat = V4L2_PIX_FMT_RGB565X;
- break;
- case 2:
- fmtd->pixelformat = V4L2_PIX_FMT_UYVY;
- break;
- case 3:
- fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8;
- break;
- case 4:
- fmtd->pixelformat = V4L2_PIX_FMT_YUYV;
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static struct stk_size {
- unsigned w;
- unsigned h;
- enum stk_mode m;
-} stk_sizes[] = {
- { .w = 1280, .h = 1024, .m = MODE_SXGA, },
- { .w = 640, .h = 480, .m = MODE_VGA, },
- { .w = 352, .h = 288, .m = MODE_CIF, },
- { .w = 320, .h = 240, .m = MODE_QVGA, },
- { .w = 176, .h = 144, .m = MODE_QCIF, },
-};
-
-static int stk_vidioc_g_fmt_vid_cap(struct file *filp,
- void *priv, struct v4l2_format *f)
-{
- struct v4l2_pix_format *pix_format = &f->fmt.pix;
- struct stk_camera *dev = video_drvdata(filp);
- int i;
-
- for (i = 0; i < ARRAY_SIZE(stk_sizes) &&
- stk_sizes[i].m != dev->vsettings.mode; i++)
- ;
- if (i == ARRAY_SIZE(stk_sizes)) {
- pr_err("ERROR: mode invalid\n");
- return -EINVAL;
- }
- pix_format->width = stk_sizes[i].w;
- pix_format->height = stk_sizes[i].h;
- pix_format->field = V4L2_FIELD_NONE;
- pix_format->colorspace = V4L2_COLORSPACE_SRGB;
- pix_format->pixelformat = dev->vsettings.palette;
- if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
- pix_format->bytesperline = pix_format->width;
- else
- pix_format->bytesperline = 2 * pix_format->width;
- pix_format->sizeimage = pix_format->bytesperline
- * pix_format->height;
- return 0;
-}
-
-static int stk_try_fmt_vid_cap(struct file *filp,
- struct v4l2_format *fmtd, int *idx)
-{
- int i;
- switch (fmtd->fmt.pix.pixelformat) {
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_RGB565X:
- case V4L2_PIX_FMT_UYVY:
- case V4L2_PIX_FMT_YUYV:
- case V4L2_PIX_FMT_SBGGR8:
- break;
- default:
- return -EINVAL;
- }
- for (i = 1; i < ARRAY_SIZE(stk_sizes); i++) {
- if (fmtd->fmt.pix.width > stk_sizes[i].w)
- break;
- }
- if (i == ARRAY_SIZE(stk_sizes)
- || (abs(fmtd->fmt.pix.width - stk_sizes[i-1].w)
- < abs(fmtd->fmt.pix.width - stk_sizes[i].w))) {
- fmtd->fmt.pix.height = stk_sizes[i-1].h;
- fmtd->fmt.pix.width = stk_sizes[i-1].w;
- if (idx)
- *idx = i - 1;
- } else {
- fmtd->fmt.pix.height = stk_sizes[i].h;
- fmtd->fmt.pix.width = stk_sizes[i].w;
- if (idx)
- *idx = i;
- }
-
- fmtd->fmt.pix.field = V4L2_FIELD_NONE;
- fmtd->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
- if (fmtd->fmt.pix.pixelformat == V4L2_PIX_FMT_SBGGR8)
- fmtd->fmt.pix.bytesperline = fmtd->fmt.pix.width;
- else
- fmtd->fmt.pix.bytesperline = 2 * fmtd->fmt.pix.width;
- fmtd->fmt.pix.sizeimage = fmtd->fmt.pix.bytesperline
- * fmtd->fmt.pix.height;
- return 0;
-}
-
-static int stk_vidioc_try_fmt_vid_cap(struct file *filp,
- void *priv, struct v4l2_format *fmtd)
-{
- return stk_try_fmt_vid_cap(filp, fmtd, NULL);
-}
-
-static int stk_setup_format(struct stk_camera *dev)
-{
- int i = 0;
- int depth;
- if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8)
- depth = 1;
- else
- depth = 2;
- while (i < ARRAY_SIZE(stk_sizes) &&
- stk_sizes[i].m != dev->vsettings.mode)
- i++;
- if (i == ARRAY_SIZE(stk_sizes)) {
- pr_err("Something is broken in %s\n", __func__);
- return -EFAULT;
- }
- /* This registers controls some timings, not sure of what. */
- stk_camera_write_reg(dev, 0x001b, 0x0e);
- if (dev->vsettings.mode == MODE_SXGA)
- stk_camera_write_reg(dev, 0x001c, 0x0e);
- else
- stk_camera_write_reg(dev, 0x001c, 0x46);
- /*
- * Registers 0x0115 0x0114 are the size of each line (bytes),
- * regs 0x0117 0x0116 are the height of the image.
- */
- stk_camera_write_reg(dev, 0x0115,
- ((stk_sizes[i].w * depth) >> 8) & 0xff);
- stk_camera_write_reg(dev, 0x0114,
- (stk_sizes[i].w * depth) & 0xff);
- stk_camera_write_reg(dev, 0x0117,
- (stk_sizes[i].h >> 8) & 0xff);
- stk_camera_write_reg(dev, 0x0116,
- stk_sizes[i].h & 0xff);
- return stk_sensor_configure(dev);
-}
-
-static int stk_vidioc_s_fmt_vid_cap(struct file *filp,
- void *priv, struct v4l2_format *fmtd)
-{
- int ret;
- int idx;
- struct stk_camera *dev = video_drvdata(filp);
-
- if (dev == NULL)
- return -ENODEV;
- if (!is_present(dev))
- return -ENODEV;
- if (is_streaming(dev))
- return -EBUSY;
- if (dev->owner)
- return -EBUSY;
- ret = stk_try_fmt_vid_cap(filp, fmtd, &idx);
- if (ret)
- return ret;
-
- dev->vsettings.palette = fmtd->fmt.pix.pixelformat;
- stk_free_buffers(dev);
- dev->frame_size = fmtd->fmt.pix.sizeimage;
- dev->vsettings.mode = stk_sizes[idx].m;
-
- stk_initialise(dev);
- return stk_setup_format(dev);
-}
-
-static int stk_vidioc_reqbufs(struct file *filp,
- void *priv, struct v4l2_requestbuffers *rb)
-{
- struct stk_camera *dev = video_drvdata(filp);
-
- if (dev == NULL)
- return -ENODEV;
- if (rb->memory != V4L2_MEMORY_MMAP)
- return -EINVAL;
- if (is_streaming(dev)
- || (dev->owner && dev->owner != filp))
- return -EBUSY;
- stk_free_buffers(dev);
- if (rb->count == 0) {
- stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */
- unset_initialised(dev);
- dev->owner = NULL;
- return 0;
- }
- dev->owner = filp;
-
- /*FIXME If they ask for zero, we must stop streaming and free */
- if (rb->count < 3)
- rb->count = 3;
- /* Arbitrary limit */
- else if (rb->count > 5)
- rb->count = 5;
-
- stk_allocate_buffers(dev, rb->count);
- rb->count = dev->n_sbufs;
- return 0;
-}
-
-static int stk_vidioc_querybuf(struct file *filp,
- void *priv, struct v4l2_buffer *buf)
-{
- struct stk_camera *dev = video_drvdata(filp);
- struct stk_sio_buffer *sbuf;
-
- if (buf->index >= dev->n_sbufs)
- return -EINVAL;
- sbuf = dev->sio_bufs + buf->index;
- *buf = sbuf->v4lbuf;
- return 0;
-}
-
-static int stk_vidioc_qbuf(struct file *filp,
- void *priv, struct v4l2_buffer *buf)
-{
- struct stk_camera *dev = video_drvdata(filp);
- struct stk_sio_buffer *sbuf;
- unsigned long flags;
-
- if (buf->memory != V4L2_MEMORY_MMAP)
- return -EINVAL;
-
- if (buf->index >= dev->n_sbufs)
- return -EINVAL;
- sbuf = dev->sio_bufs + buf->index;
- if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED)
- return 0;
- sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED;
- sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE;
- spin_lock_irqsave(&dev->spinlock, flags);
- list_add_tail(&sbuf->list, &dev->sio_avail);
- *buf = sbuf->v4lbuf;
- spin_unlock_irqrestore(&dev->spinlock, flags);
- return 0;
-}
-
-static int stk_vidioc_dqbuf(struct file *filp,
- void *priv, struct v4l2_buffer *buf)
-{
- struct stk_camera *dev = video_drvdata(filp);
- struct stk_sio_buffer *sbuf;
- unsigned long flags;
- int ret;
-
- if (!is_streaming(dev))
- return -EINVAL;
-
- if (filp->f_flags & O_NONBLOCK && list_empty(&dev->sio_full))
- return -EWOULDBLOCK;
- ret = wait_event_interruptible(dev->wait_frame,
- !list_empty(&dev->sio_full) || !is_present(dev));
- if (ret)
- return ret;
- if (!is_present(dev))
- return -EIO;
-
- spin_lock_irqsave(&dev->spinlock, flags);
- sbuf = list_first_entry(&dev->sio_full, struct stk_sio_buffer, list);
- list_del_init(&sbuf->list);
- spin_unlock_irqrestore(&dev->spinlock, flags);
- sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED;
- sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE;
- sbuf->v4lbuf.sequence = ++dev->sequence;
- v4l2_buffer_set_timestamp(&sbuf->v4lbuf, ktime_get_ns());
-
- *buf = sbuf->v4lbuf;
- return 0;
-}
-
-static int stk_vidioc_streamon(struct file *filp,
- void *priv, enum v4l2_buf_type type)
-{
- struct stk_camera *dev = video_drvdata(filp);
- if (is_streaming(dev))
- return 0;
- if (dev->sio_bufs == NULL)
- return -EINVAL;
- dev->sequence = 0;
- return stk_start_stream(dev);
-}
-
-static int stk_vidioc_streamoff(struct file *filp,
- void *priv, enum v4l2_buf_type type)
-{
- struct stk_camera *dev = video_drvdata(filp);
- unsigned long flags;
- int i;
- stk_stop_stream(dev);
- spin_lock_irqsave(&dev->spinlock, flags);
- INIT_LIST_HEAD(&dev->sio_avail);
- INIT_LIST_HEAD(&dev->sio_full);
- for (i = 0; i < dev->n_sbufs; i++) {
- INIT_LIST_HEAD(&dev->sio_bufs[i].list);
- dev->sio_bufs[i].v4lbuf.flags = 0;
- }
- spin_unlock_irqrestore(&dev->spinlock, flags);
- return 0;
-}
-
-
-static int stk_vidioc_g_parm(struct file *filp,
- void *priv, struct v4l2_streamparm *sp)
-{
- /*FIXME This is not correct */
- sp->parm.capture.timeperframe.numerator = 1;
- sp->parm.capture.timeperframe.denominator = 30;
- sp->parm.capture.readbuffers = 2;
- return 0;
-}
-
-static int stk_vidioc_enum_framesizes(struct file *filp,
- void *priv, struct v4l2_frmsizeenum *frms)
-{
- if (frms->index >= ARRAY_SIZE(stk_sizes))
- return -EINVAL;
- switch (frms->pixel_format) {
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_RGB565X:
- case V4L2_PIX_FMT_UYVY:
- case V4L2_PIX_FMT_YUYV:
- case V4L2_PIX_FMT_SBGGR8:
- frms->type = V4L2_FRMSIZE_TYPE_DISCRETE;
- frms->discrete.width = stk_sizes[frms->index].w;
- frms->discrete.height = stk_sizes[frms->index].h;
- return 0;
- default: return -EINVAL;
- }
-}
-
-static const struct v4l2_ctrl_ops stk_ctrl_ops = {
- .s_ctrl = stk_s_ctrl,
-};
-
-static const struct v4l2_file_operations v4l_stk_fops = {
- .owner = THIS_MODULE,
- .open = v4l_stk_open,
- .release = v4l_stk_release,
- .read = v4l_stk_read,
- .poll = v4l_stk_poll,
- .mmap = v4l_stk_mmap,
- .unlocked_ioctl = video_ioctl2,
-};
-
-static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
- .vidioc_querycap = stk_vidioc_querycap,
- .vidioc_enum_fmt_vid_cap = stk_vidioc_enum_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = stk_vidioc_try_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = stk_vidioc_s_fmt_vid_cap,
- .vidioc_g_fmt_vid_cap = stk_vidioc_g_fmt_vid_cap,
- .vidioc_enum_input = stk_vidioc_enum_input,
- .vidioc_s_input = stk_vidioc_s_input,
- .vidioc_g_input = stk_vidioc_g_input,
- .vidioc_reqbufs = stk_vidioc_reqbufs,
- .vidioc_querybuf = stk_vidioc_querybuf,
- .vidioc_qbuf = stk_vidioc_qbuf,
- .vidioc_dqbuf = stk_vidioc_dqbuf,
- .vidioc_streamon = stk_vidioc_streamon,
- .vidioc_streamoff = stk_vidioc_streamoff,
- .vidioc_g_parm = stk_vidioc_g_parm,
- .vidioc_enum_framesizes = stk_vidioc_enum_framesizes,
- .vidioc_log_status = v4l2_ctrl_log_status,
- .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
- .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-};
-
-static void stk_v4l_dev_release(struct video_device *vd)
-{
- struct stk_camera *dev = vdev_to_camera(vd);
-
- if (dev->sio_bufs != NULL || dev->isobufs != NULL)
- pr_err("We are leaking memory\n");
- usb_put_intf(dev->interface);
- usb_put_dev(dev->udev);
-
- v4l2_ctrl_handler_free(&dev->hdl);
- v4l2_device_unregister(&dev->v4l2_dev);
- kfree(dev);
-}
-
-static const struct video_device stk_v4l_data = {
- .name = "stkwebcam",
- .fops = &v4l_stk_fops,
- .ioctl_ops = &v4l_stk_ioctl_ops,
- .release = stk_v4l_dev_release,
-};
-
-
-static int stk_register_video_device(struct stk_camera *dev)
-{
- int err;
-
- dev->vdev = stk_v4l_data;
- dev->vdev.lock = &dev->lock;
- dev->vdev.v4l2_dev = &dev->v4l2_dev;
- dev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
- V4L2_CAP_STREAMING;
- video_set_drvdata(&dev->vdev, dev);
- err = video_register_device(&dev->vdev, VFL_TYPE_VIDEO, -1);
- if (err)
- pr_err("v4l registration failed\n");
- else
- pr_info("Syntek USB2.0 Camera is now controlling device %s\n",
- video_device_node_name(&dev->vdev));
- return err;
-}
-
-
-/* USB Stuff */
-
-static int stk_camera_probe(struct usb_interface *interface,
- const struct usb_device_id *id)
-{
- struct v4l2_ctrl_handler *hdl;
- int err = 0;
- int i;
-
- struct stk_camera *dev = NULL;
- struct usb_device *udev = interface_to_usbdev(interface);
- struct usb_host_interface *iface_desc;
- struct usb_endpoint_descriptor *endpoint;
-
- dev = kzalloc(sizeof(struct stk_camera), GFP_KERNEL);
- if (dev == NULL) {
- pr_err("Out of memory !\n");
- return -ENOMEM;
- }
- err = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
- if (err < 0) {
- dev_err(&udev->dev, "couldn't register v4l2_device\n");
- kfree(dev);
- return err;
- }
- hdl = &dev->hdl;
- v4l2_ctrl_handler_init(hdl, 3);
- v4l2_ctrl_new_std(hdl, &stk_ctrl_ops,
- V4L2_CID_BRIGHTNESS, 0, 0xff, 0x1, 0x60);
- v4l2_ctrl_new_std(hdl, &stk_ctrl_ops,
- V4L2_CID_HFLIP, 0, 1, 1, 1);
- v4l2_ctrl_new_std(hdl, &stk_ctrl_ops,
- V4L2_CID_VFLIP, 0, 1, 1, 1);
- if (hdl->error) {
- err = hdl->error;
- dev_err(&udev->dev, "couldn't register control\n");
- goto error;
- }
- dev->v4l2_dev.ctrl_handler = hdl;
-
- spin_lock_init(&dev->spinlock);
- mutex_init(&dev->lock);
- init_waitqueue_head(&dev->wait_frame);
- dev->first_init = 1; /* webcam LED management */
-
- dev->udev = usb_get_dev(udev);
- dev->interface = interface;
- usb_get_intf(interface);
-
- if (hflip != -1)
- dev->vsettings.hflip = hflip;
- else if (dmi_check_system(stk_upside_down_dmi_table))
- dev->vsettings.hflip = 1;
- else
- dev->vsettings.hflip = 0;
- if (vflip != -1)
- dev->vsettings.vflip = vflip;
- else if (dmi_check_system(stk_upside_down_dmi_table))
- dev->vsettings.vflip = 1;
- else
- dev->vsettings.vflip = 0;
- dev->n_sbufs = 0;
- set_present(dev);
-
- /* Set up the endpoint information
- * use only the first isoc-in endpoint
- * for the current alternate setting */
- iface_desc = interface->cur_altsetting;
-
- for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
- endpoint = &iface_desc->endpoint[i].desc;
-
- if (!dev->isoc_ep
- && usb_endpoint_is_isoc_in(endpoint)) {
- /* we found an isoc in endpoint */
- dev->isoc_ep = usb_endpoint_num(endpoint);
- break;
- }
- }
- if (!dev->isoc_ep) {
- pr_err("Could not find isoc-in endpoint\n");
- err = -ENODEV;
- goto error_put;
- }
- dev->vsettings.palette = V4L2_PIX_FMT_RGB565;
- dev->vsettings.mode = MODE_VGA;
- dev->frame_size = 640 * 480 * 2;
-
- INIT_LIST_HEAD(&dev->sio_avail);
- INIT_LIST_HEAD(&dev->sio_full);
-
- usb_set_intfdata(interface, dev);
-
- err = stk_register_video_device(dev);
- if (err)
- goto error_put;
-
- return 0;
-
-error_put:
- usb_put_intf(interface);
- usb_put_dev(dev->udev);
-error:
- v4l2_ctrl_handler_free(hdl);
- v4l2_device_unregister(&dev->v4l2_dev);
- kfree(dev);
- return err;
-}
-
-static void stk_camera_disconnect(struct usb_interface *interface)
-{
- struct stk_camera *dev = usb_get_intfdata(interface);
-
- usb_set_intfdata(interface, NULL);
- unset_present(dev);
-
- wake_up_interruptible(&dev->wait_frame);
-
- pr_info("Syntek USB2.0 Camera release resources device %s\n",
- video_device_node_name(&dev->vdev));
-
- video_unregister_device(&dev->vdev);
-}
-
-#ifdef CONFIG_PM
-static int stk_camera_suspend(struct usb_interface *intf, pm_message_t message)
-{
- struct stk_camera *dev = usb_get_intfdata(intf);
- if (is_streaming(dev)) {
- stk_stop_stream(dev);
- /* yes, this is ugly */
- set_streaming(dev);
- }
- return 0;
-}
-
-static int stk_camera_resume(struct usb_interface *intf)
-{
- struct stk_camera *dev = usb_get_intfdata(intf);
- if (!is_initialised(dev))
- return 0;
- unset_initialised(dev);
- stk_initialise(dev);
- stk_camera_write_reg(dev, 0x0, 0x49);
- stk_setup_format(dev);
- if (is_streaming(dev))
- stk_start_stream(dev);
- return 0;
-}
-#endif
-
-static struct usb_driver stk_camera_driver = {
- .name = "stkwebcam",
- .probe = stk_camera_probe,
- .disconnect = stk_camera_disconnect,
- .id_table = stkwebcam_table,
-#ifdef CONFIG_PM
- .suspend = stk_camera_suspend,
- .resume = stk_camera_resume,
-#endif
-};
-
-module_usb_driver(stk_camera_driver);
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * stk-webcam.h : Driver for Syntek 1125 USB webcam controller
- *
- * Copyright (C) 2006 Nicolas VIVIEN
- * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
- */
-
-#ifndef STKWEBCAM_H
-#define STKWEBCAM_H
-
-#include <linux/usb.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-common.h>
-
-#define DRIVER_VERSION "v0.0.1"
-#define DRIVER_VERSION_NUM 0x000001
-
-#define MAX_ISO_BUFS 3
-#define ISO_FRAMES_PER_DESC 16
-#define ISO_MAX_FRAME_SIZE 3 * 1024
-#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
-
-struct stk_iso_buf {
- void *data;
- int length;
- int read;
- struct urb *urb;
-};
-
-/* Streaming IO buffers */
-struct stk_sio_buffer {
- struct v4l2_buffer v4lbuf;
- char *buffer;
- int mapcount;
- struct stk_camera *dev;
- struct list_head list;
-};
-
-enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF};
-
-struct stk_video {
- enum stk_mode mode;
- __u32 palette;
- int hflip;
- int vflip;
-};
-
-enum stk_status {
- S_PRESENT = 1,
- S_INITIALISED = 2,
- S_MEMALLOCD = 4,
- S_STREAMING = 8,
-};
-#define is_present(dev) ((dev)->status & S_PRESENT)
-#define is_initialised(dev) ((dev)->status & S_INITIALISED)
-#define is_streaming(dev) ((dev)->status & S_STREAMING)
-#define is_memallocd(dev) ((dev)->status & S_MEMALLOCD)
-#define set_present(dev) ((dev)->status = S_PRESENT)
-#define unset_present(dev) ((dev)->status &= \
- ~(S_PRESENT|S_INITIALISED|S_STREAMING))
-#define set_initialised(dev) ((dev)->status |= S_INITIALISED)
-#define unset_initialised(dev) ((dev)->status &= ~S_INITIALISED)
-#define set_memallocd(dev) ((dev)->status |= S_MEMALLOCD)
-#define unset_memallocd(dev) ((dev)->status &= ~S_MEMALLOCD)
-#define set_streaming(dev) ((dev)->status |= S_STREAMING)
-#define unset_streaming(dev) ((dev)->status &= ~S_STREAMING)
-
-struct regval {
- unsigned reg;
- unsigned val;
-};
-
-struct stk_camera {
- struct v4l2_device v4l2_dev;
- struct v4l2_ctrl_handler hdl;
- struct video_device vdev;
- struct usb_device *udev;
- struct usb_interface *interface;
- int webcam_model;
- struct file *owner;
- struct mutex lock;
- int first_init;
-
- u8 isoc_ep;
-
- /* Not sure if this is right */
- atomic_t urbs_used;
-
- struct stk_video vsettings;
-
- enum stk_status status;
-
- spinlock_t spinlock;
- wait_queue_head_t wait_frame;
-
- struct stk_iso_buf *isobufs;
-
- int frame_size;
- /* Streaming buffers */
- int reading;
- unsigned int n_sbufs;
- struct stk_sio_buffer *sio_bufs;
- struct list_head sio_avail;
- struct list_head sio_full;
- unsigned sequence;
-
- u8 read_reg_scratch;
-};
-
-#define vdev_to_camera(d) container_of(d, struct stk_camera, vdev)
-
-int stk_camera_write_reg(struct stk_camera *, u16, u8);
-int stk_camera_read_reg(struct stk_camera *, u16, u8 *);
-
-int stk_sensor_init(struct stk_camera *);
-int stk_sensor_configure(struct stk_camera *);
-int stk_sensor_sleep(struct stk_camera *dev);
-int stk_sensor_wakeup(struct stk_camera *dev);
-int stk_sensor_set_brightness(struct stk_camera *dev, int br);
-
-#endif
projects / linux.git / commitdiff