diff options
Diffstat (limited to 'kernel/drivers/media/usb/stkwebcam')
| -rw-r--r-- | kernel/drivers/media/usb/stkwebcam/Kconfig | 13 | ||||
| -rw-r--r-- | kernel/drivers/media/usb/stkwebcam/Makefile | 4 | ||||
| -rw-r--r-- | kernel/drivers/media/usb/stkwebcam/stk-sensor.c | 595 | ||||
| -rw-r--r-- | kernel/drivers/media/usb/stkwebcam/stk-webcam.c | 1436 | ||||
| -rw-r--r-- | kernel/drivers/media/usb/stkwebcam/stk-webcam.h | 140 |
5 files changed, 2188 insertions, 0 deletions
diff --git a/kernel/drivers/media/usb/stkwebcam/Kconfig b/kernel/drivers/media/usb/stkwebcam/Kconfig new file mode 100644 index 000000000..a6a00aa4f --- /dev/null +++ b/kernel/drivers/media/usb/stkwebcam/Kconfig @@ -0,0 +1,13 @@ +config USB_STKWEBCAM + tristate "USB Syntek DC1125 Camera support" + depends on VIDEO_V4L2 + ---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/> + + To compile this driver as a module, choose M here: the + module will be called stkwebcam. + diff --git a/kernel/drivers/media/usb/stkwebcam/Makefile b/kernel/drivers/media/usb/stkwebcam/Makefile new file mode 100644 index 000000000..20ef8a4b9 --- /dev/null +++ b/kernel/drivers/media/usb/stkwebcam/Makefile @@ -0,0 +1,4 @@ +stkwebcam-objs := stk-webcam.o stk-sensor.o + +obj-$(CONFIG_USB_STKWEBCAM) += stkwebcam.o + diff --git a/kernel/drivers/media/usb/stkwebcam/stk-sensor.c b/kernel/drivers/media/usb/stkwebcam/stk-sensor.c new file mode 100644 index 000000000..e546b014d --- /dev/null +++ b/kernel/drivers/media/usb/stkwebcam/stk-sensor.c @@ -0,0 +1,595 @@ +/* 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 + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/* 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 */ + +#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; + int 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) + STK_ERROR("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; + int 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) + STK_ERROR("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 = (u8) 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)) { + STK_ERROR("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)) { + STK_ERROR("Strange error reading sensor ID\n"); + return -ENODEV; + } + if (idh != 0x7f || idl != 0xa2) { + STK_ERROR("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)) { + STK_ERROR("Could not read sensor model\n"); + return -ENODEV; + } + stk_sensor_write_regvals(dev, ov_initvals); + msleep(10); + STK_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: STK_ERROR("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: STK_ERROR("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)) + STK_ERROR("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)) + STK_ERROR("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; +} + diff --git a/kernel/drivers/media/usb/stkwebcam/stk-webcam.c b/kernel/drivers/media/usb/stkwebcam/stk-webcam.c new file mode 100644 index 000000000..c21c4c004 --- /dev/null +++ b/kernel/drivers/media/usb/stkwebcam/stk-webcam.c @@ -0,0 +1,1436 @@ +/* + * 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 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#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 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") + } + }, + {} +}; + + +/* + * 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, int *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, + (u8 *) value, + sizeof(u8), + 500); + if (ret < 0) + return ret; + else + return 0; +} + +static int stk_start_stream(struct stk_camera *dev) +{ + int value; + int i, ret; + int value_116, value_117; + + if (!is_present(dev)) + return -ENODEV; + if (!is_memallocd(dev) || !is_initialised(dev)) { + STK_ERROR("FIXME: Buffers are not allocated\n"); + return -EFAULT; + } + ret = usb_set_interface(dev->udev, 0, 5); + + if (ret < 0) + STK_ERROR("usb_set_interface failed !\n"); + if (stk_sensor_wakeup(dev)) + STK_ERROR("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) +{ + int 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)) + STK_ERROR("usb_set_interface failed !\n"); + if (stk_sensor_sleep(dev)) + STK_ERROR("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) { + STK_ERROR("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) { + STK_ERROR("isoc_handler: urb->status == %d\n", urb->status); + goto resubmit; + } + + if (list_empty(&dev->sio_avail)) { + /*FIXME Stop streaming after a while */ + (void) (printk_ratelimit() && + STK_ERROR("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) + STK_ERROR("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) { + (void) (printk_ratelimit() && + STK_ERROR("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) { + (void) (printk_ratelimit() && + STK_ERROR("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) { + STK_ERROR("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) + STK_ERROR("isobufs already allocated. Bad\n"); + else + dev->isobufs = kcalloc(MAX_ISO_BUFS, sizeof(*dev->isobufs), + GFP_KERNEL); + if (dev->isobufs == NULL) { + STK_ERROR("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) { + STK_ERROR("Failed to allocate iso buffer %d\n", + i); + goto isobufs_out; + } + dev->isobufs[i].data = kbuf; + } else + STK_ERROR("isobuf data already allocated\n"); + if (dev->isobufs[i].urb == NULL) { + urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); + if (urb == NULL) { + STK_ERROR("Failed to allocate URB %d\n", i); + goto isobufs_out; + } + dev->isobufs[i].urb = urb; + } else { + STK_ERROR("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) + STK_ERROR("sio_bufs already allocated\n"); + else { + dev->sio_bufs = kzalloc(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; + } + + if (is_present(dev)) + 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); + STK_ERROR("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 unsigned int v4l_stk_poll(struct file *fp, poll_table *wait) +{ + struct stk_camera *dev = video_drvdata(fp); + unsigned res = v4l2_ctrl_poll(fp, wait); + + poll_wait(fp, &dev->wait_frame, wait); + + if (!is_present(dev)) + return POLLERR; + + if (!list_empty(&dev->sio_full)) + return res | POLLIN | POLLRDNORM; + + 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); + + strcpy(cap->driver, "stk"); + strcpy(cap->card, "stk"); + usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); + + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE + | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int stk_vidioc_enum_input(struct file *filp, + void *priv, struct v4l2_input *input) +{ + if (input->index != 0) + return -EINVAL; + + strcpy(input->name, "Syntek USB Camera"); + 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; + strcpy(fmtd->description, "r5g6b5"); + break; + case 1: + fmtd->pixelformat = V4L2_PIX_FMT_RGB565X; + strcpy(fmtd->description, "r5g6b5BE"); + break; + case 2: + fmtd->pixelformat = V4L2_PIX_FMT_UYVY; + strcpy(fmtd->description, "yuv4:2:2"); + break; + case 3: + fmtd->pixelformat = V4L2_PIX_FMT_SBGGR8; + strcpy(fmtd->description, "Raw bayer"); + break; + case 4: + fmtd->pixelformat = V4L2_PIX_FMT_YUYV; + strcpy(fmtd->description, "yuv4:2:2"); + 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)) { + STK_ERROR("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)) { + STK_ERROR("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 heigth 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_get_timestamp(&sbuf->v4lbuf.timestamp); + + *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 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) + STK_ERROR("We are leaking memory\n"); + usb_put_intf(dev->interface); + kfree(dev); +} + +static 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; + video_set_drvdata(&dev->vdev, dev); + err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1); + if (err) + STK_ERROR("v4l registration failed\n"); + else + STK_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) { + STK_ERROR("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 = 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) { + STK_ERROR("Could not find isoc-in endpoint"); + err = -ENODEV; + goto error; + } + 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; + + return 0; + +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); + + STK_INFO("Syntek USB2.0 Camera release resources device %s\n", + video_device_node_name(&dev->vdev)); + + video_unregister_device(&dev->vdev); + v4l2_ctrl_handler_free(&dev->hdl); + v4l2_device_unregister(&dev->v4l2_dev); +} + +#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); diff --git a/kernel/drivers/media/usb/stkwebcam/stk-webcam.h b/kernel/drivers/media/usb/stkwebcam/stk-webcam.h new file mode 100644 index 000000000..9bbfa3d9b --- /dev/null +++ b/kernel/drivers/media/usb/stkwebcam/stk-webcam.h @@ -0,0 +1,140 @@ +/* + * stk-webcam.h : Driver for Syntek 1125 USB webcam controller + * + * Copyright (C) 2006 Nicolas VIVIEN + * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#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) + + +#define PREFIX "stkwebcam: " +#define STK_INFO(str, args...) printk(KERN_INFO PREFIX str, ##args) +#define STK_ERROR(str, args...) printk(KERN_ERR PREFIX str, ##args) +#define STK_WARNING(str, args...) printk(KERN_WARNING PREFIX str, ##args) + +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; +}; + +#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, int *); + +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 |