--- /dev/null
+/* 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 */
+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;
+}
+
+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_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_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;
+}
+
--- /dev/null
+/*
+ * 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/kref.h>
+
+#include <linux/usb.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <linux/vmalloc.h>
+
+#include "stk-webcam.h"
+
+
+static int hflip = 1;
+module_param(hflip, bool, 0444);
+MODULE_PARM_DESC(hflip, "Horizontal image flip (mirror). Defaults to 1");
+
+static int vflip = 1;
+module_param(vflip, bool, 0444);
+MODULE_PARM_DESC(vflip, "Vertical image flip. Defaults to 1");
+
+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);
+
+void stk_camera_cleanup(struct kref *kref)
+{
+ struct stk_camera *dev = to_stk_camera(kref);
+
+ STK_INFO("Syntek USB2.0 Camera release resources"
+ " video device /dev/video%d\n", dev->vdev.minor);
+ video_unregister_device(&dev->vdev);
+ dev->vdev.priv = NULL;
+
+ if (dev->sio_bufs != NULL || dev->isobufs != NULL)
+ STK_ERROR("We are leaking memory\n");
+ usb_put_intf(dev->interface);
+ kfree(dev);
+}
+
+
+/*
+ * 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;
+}
+
+/* sysfs functions */
+/*FIXME cleanup this */
+
+static ssize_t show_brightness(struct device *class,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(class);
+ struct stk_camera *dev = vdev_to_camera(vdev);
+
+ return sprintf(buf, "%X\n", dev->vsettings.brightness);
+}
+
+static ssize_t store_brightness(struct device *class,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ char *endp;
+ unsigned long value;
+ int ret;
+
+ struct video_device *vdev = to_video_device(class);
+ struct stk_camera *dev = vdev_to_camera(vdev);
+
+ value = simple_strtoul(buf, &endp, 16);
+
+ dev->vsettings.brightness = (int) value;
+
+ ret = stk_sensor_set_brightness(dev, value >> 8);
+ if (ret)
+ return ret;
+ else
+ return count;
+}
+
+static ssize_t show_hflip(struct device *class,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(class);
+ struct stk_camera *dev = vdev_to_camera(vdev);
+
+ return sprintf(buf, "%d\n", dev->vsettings.hflip);
+}
+
+static ssize_t store_hflip(struct device *class,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(class);
+ struct stk_camera *dev = vdev_to_camera(vdev);
+
+ if (strncmp(buf, "1", 1) == 0)
+ dev->vsettings.hflip = 1;
+ else if (strncmp(buf, "0", 1) == 0)
+ dev->vsettings.hflip = 0;
+ else
+ return -EINVAL;
+
+ return strlen(buf);
+}
+
+static ssize_t show_vflip(struct device *class,
+ struct device_attribute *attr, char *buf)
+{
+ struct video_device *vdev = to_video_device(class);
+ struct stk_camera *dev = vdev_to_camera(vdev);
+
+ return sprintf(buf, "%d\n", dev->vsettings.vflip);
+}
+
+static ssize_t store_vflip(struct device *class,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct video_device *vdev = to_video_device(class);
+ struct stk_camera *dev = vdev_to_camera(vdev);
+
+ if (strncmp(buf, "1", 1) == 0)
+ dev->vsettings.vflip = 1;
+ else if (strncmp(buf, "0", 1) == 0)
+ dev->vsettings.vflip = 0;
+ else
+ return -EINVAL;
+
+ return strlen(buf);
+}
+
+static DEVICE_ATTR(brightness, S_IRUGO | S_IWUGO,
+ show_brightness, store_brightness);
+static DEVICE_ATTR(hflip, S_IRUGO | S_IWUGO, show_hflip, store_hflip);
+static DEVICE_ATTR(vflip, S_IRUGO | S_IWUGO, show_vflip, store_vflip);
+
+static int stk_create_sysfs_files(struct video_device *vdev)
+{
+ int ret;
+
+ ret = video_device_create_file(vdev, &dev_attr_brightness);
+ ret += video_device_create_file(vdev, &dev_attr_hflip);
+ ret += video_device_create_file(vdev, &dev_attr_vflip);
+ return ret;
+}
+
+static void stk_remove_sysfs_files(struct video_device *vdev)
+{
+ video_device_remove_file(vdev, &dev_attr_brightness);
+ video_device_remove_file(vdev, &dev_attr_hflip);
+ video_device_remove_file(vdev, &dev_attr_vflip);
+}
+
+
+/* *********************************************** */
+/*
+ * 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) {
+ list_move_tail(dev->sio_avail.next,
+ &dev->sio_full);
+ wake_up(&dev->wait_frame);
+ if (list_empty(&dev->sio_avail)) {
+ (void) (printk_ratelimit() &&
+ STK_ERROR("No buffer available\n"));
+ goto resubmit;
+ }
+ 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 = kzalloc(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))
+ 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.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++) {
+ if (dev->sio_bufs[i].buffer != NULL)
+ 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 inode *inode, struct file *fp)
+{
+ struct stk_camera *dev;
+ struct video_device *vdev;
+
+ vdev = video_devdata(fp);
+ dev = vdev_to_camera(vdev);
+
+ if (dev == NULL || !is_present(dev))
+ return -ENXIO;
+ fp->private_data = vdev;
+ kref_get(&dev->kref);
+
+ return 0;
+}
+
+static int v4l_stk_release(struct inode *inode, struct file *fp)
+{
+ struct stk_camera *dev;
+ struct video_device *vdev;
+
+ vdev = video_devdata(fp);
+ if (vdev == NULL) {
+ STK_ERROR("v4l_release called w/o video devdata\n");
+ return -EFAULT;
+ }
+ dev = vdev_to_camera(vdev);
+ if (dev == NULL) {
+ STK_ERROR("v4l_release called on removed device\n");
+ return -ENODEV;
+ }
+
+ if (dev->owner != fp) {
+ kref_put(&dev->kref, stk_camera_cleanup);
+ return 0;
+ }
+
+ stk_stop_stream(dev);
+
+ stk_free_buffers(dev);
+
+ dev->owner = NULL;
+
+ kref_put(&dev->kref, stk_camera_cleanup);
+
+ return 0;
+}
+
+static ssize_t v4l_stk_read(struct file *fp, char __user *buf,
+ size_t count, loff_t *f_pos)
+{
+ int i;
+ int ret;
+ unsigned long flags;
+ struct stk_camera *dev;
+ struct video_device *vdev;
+ struct stk_sio_buffer *sbuf;
+
+ vdev = video_devdata(fp);
+ if (vdev == NULL)
+ return -EFAULT;
+ dev = vdev_to_camera(vdev);
+
+ if (dev == NULL)
+ return -EIO;
+
+ if (!is_present(dev))
+ return -EIO;
+ if (dev->owner && 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;
+ 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 unsigned int v4l_stk_poll(struct file *fp, poll_table *wait)
+{
+ struct stk_camera *dev;
+ struct video_device *vdev;
+
+ vdev = video_devdata(fp);
+
+ if (vdev == NULL)
+ return -EFAULT;
+
+ dev = vdev_to_camera(vdev);
+ if (dev == NULL)
+ return -ENODEV;
+
+ poll_wait(fp, &dev->wait_frame, wait);
+
+ if (!is_present(dev))
+ return POLLERR;
+
+ if (!list_empty(&dev->sio_full))
+ return (POLLIN | POLLRDNORM);
+
+ return 0;
+}
+
+
+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 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;
+ struct video_device *vdev;
+ struct stk_sio_buffer *sbuf = NULL;
+
+ if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
+ return -EINVAL;
+
+ vdev = video_devdata(fp);
+ dev = vdev_to_camera(vdev);
+
+ 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)
+{
+ strcpy(cap->driver, "stk");
+ strcpy(cap->card, "stk");
+ cap->version = DRIVER_VERSION_NUM;
+
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
+ | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
+ 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)
+{
+ if (i != 0)
+ return -EINVAL;
+ else
+ return 0;
+}
+
+/* from vivi.c */
+static int stk_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
+{
+ return 0;
+}
+
+/* List of all V4Lv2 controls supported by the driver */
+static struct v4l2_queryctrl stk_controls[] = {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+ .maximum = 0xffff,
+ .step = 0x0100,
+ .default_value = 0x6000,
+ },
+ /*TODO: get more controls to work */
+};
+
+static int stk_vidioc_queryctrl(struct file *filp,
+ void *priv, struct v4l2_queryctrl *c)
+{
+ int i;
+ int nbr;
+ nbr = ARRAY_SIZE(stk_controls);
+
+ for (i = 0; i < nbr; i++) {
+ if (stk_controls[i].id == c->id) {
+ memcpy(c, &stk_controls[i],
+ sizeof(struct v4l2_queryctrl));
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+static int stk_vidioc_g_ctrl(struct file *filp,
+ void *priv, struct v4l2_control *c)
+{
+ struct stk_camera *dev = priv;
+ switch (c->id) {
+ case V4L2_CID_BRIGHTNESS:
+ c->value = dev->vsettings.brightness;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int stk_vidioc_s_ctrl(struct file *filp,
+ void *priv, struct v4l2_control *c)
+{
+ struct stk_camera *dev = priv;
+ switch (c->id) {
+ case V4L2_CID_BRIGHTNESS:
+ dev->vsettings.brightness = c->value;
+ return stk_sensor_set_brightness(dev, c->value >> 8);
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+
+static int stk_vidioc_enum_fmt_cap(struct file *filp,
+ void *priv, struct v4l2_fmtdesc *fmtd)
+{
+ fmtd->flags = 0;
+
+ 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;
+ 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_cap(struct file *filp,
+ void *priv, struct v4l2_format *f)
+{
+ struct v4l2_pix_format *pix_format = &f->fmt.pix;
+ struct stk_camera *dev = priv;
+ 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->priv = 0;
+ 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_vidioc_try_fmt_cap(struct file *filp,
+ void *priv, struct v4l2_format *fmtd)
+{
+ 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_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;
+ fmtd->fmt.pix.priv = i - 1;
+ } else {
+ fmtd->fmt.pix.height = stk_sizes[i].h;
+ fmtd->fmt.pix.width = stk_sizes[i].w;
+ fmtd->fmt.pix.priv = 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_s_fmt_cap(struct file *filp,
+ void *priv, struct v4l2_format *fmtd)
+{
+ int ret;
+ struct stk_camera *dev = priv;
+
+ if (dev == NULL)
+ return -ENODEV;
+ if (!is_present(dev))
+ return -ENODEV;
+ if (is_streaming(dev))
+ return -EBUSY;
+ if (dev->owner && dev->owner != filp)
+ return -EBUSY;
+ dev->owner = filp;
+ ret = stk_vidioc_try_fmt_cap(filp, priv, fmtd);
+ 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[fmtd->fmt.pix.priv].m;
+
+ stk_initialise(dev);
+ /* 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,
+ (fmtd->fmt.pix.bytesperline >> 8) & 0xff);
+ stk_camera_write_reg(dev, 0x0114,
+ fmtd->fmt.pix.bytesperline & 0xff);
+ stk_camera_write_reg(dev, 0x0117,
+ (fmtd->fmt.pix.height >> 8) & 0xff);
+ stk_camera_write_reg(dev, 0x0116,
+ fmtd->fmt.pix.height & 0xff);
+ return stk_sensor_configure(dev);
+}
+
+static int stk_vidioc_reqbufs(struct file *filp,
+ void *priv, struct v4l2_requestbuffers *rb)
+{
+ struct stk_camera *dev = priv;
+
+ if (dev == NULL)
+ return -ENODEV;
+ if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (rb->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+ if (is_streaming(dev)
+ || (dev->owner && dev->owner != filp))
+ return -EBUSY;
+ 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)
+{
+ int index;
+ struct stk_camera *dev = priv;
+ struct stk_sio_buffer *sbuf;
+
+ if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ index = buf->index;
+
+ if (index < 0 || 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 = priv;
+ struct stk_sio_buffer *sbuf;
+ unsigned long flags;
+ if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ if (buf->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+
+ if (buf->index < 0 || 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 = priv;
+ struct stk_sio_buffer *sbuf;
+ unsigned long flags;
+ int ret;
+
+ if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE
+ || !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;
+ do_gettimeofday(&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 = priv;
+ 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 = priv;
+ 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)
+{
+ if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ sp->parm.capture.capability = 0;
+ sp->parm.capture.capturemode = 0;
+ /*FIXME This is not correct */
+ sp->parm.capture.timeperframe.numerator = 1;
+ sp->parm.capture.timeperframe.denominator = 30;
+ sp->parm.capture.readbuffers = 2;
+ sp->parm.capture.extendedmode = 0;
+ return 0;
+}
+
+static struct 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,
+ .ioctl = video_ioctl2,
+ .llseek = no_llseek
+};
+
+static void stk_v4l_dev_release(struct video_device *vd)
+{
+}
+
+static struct video_device stk_v4l_data = {
+ .name = "stkwebcam",
+ .type = VFL_TYPE_GRABBER,
+ .type2 = VID_TYPE_CAPTURE,
+ .minor = -1,
+ .tvnorms = V4L2_STD_UNKNOWN,
+ .current_norm = V4L2_STD_UNKNOWN,
+ .fops = &v4l_stk_fops,
+ .release = stk_v4l_dev_release,
+
+ .vidioc_querycap = stk_vidioc_querycap,
+ .vidioc_enum_fmt_cap = stk_vidioc_enum_fmt_cap,
+ .vidioc_try_fmt_cap = stk_vidioc_try_fmt_cap,
+ .vidioc_s_fmt_cap = stk_vidioc_s_fmt_cap,
+ .vidioc_g_fmt_cap = stk_vidioc_g_fmt_cap,
+ .vidioc_enum_input = stk_vidioc_enum_input,
+ .vidioc_s_input = stk_vidioc_s_input,
+ .vidioc_g_input = stk_vidioc_g_input,
+ .vidioc_s_std = stk_vidioc_s_std,
+ .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_queryctrl = stk_vidioc_queryctrl,
+ .vidioc_g_ctrl = stk_vidioc_g_ctrl,
+ .vidioc_s_ctrl = stk_vidioc_s_ctrl,
+ .vidioc_g_parm = stk_vidioc_g_parm,
+};
+
+
+static int stk_register_video_device(struct stk_camera *dev)
+{
+ int err;
+
+ dev->vdev = stk_v4l_data;
+ dev->vdev.debug = debug;
+ dev->vdev.dev = &dev->interface->dev;
+ dev->vdev.priv = 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 video device"
+ " /dev/video%d\n", dev->vdev.minor);
+ return err;
+}
+
+
+/* USB Stuff */
+
+static int stk_camera_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ int i;
+ int err;
+
+ 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;
+ }
+
+ kref_init(&dev->kref);
+ spin_lock_init(&dev->spinlock);
+ init_waitqueue_head(&dev->wait_frame);
+
+ dev->udev = udev;
+ dev->interface = interface;
+ usb_get_intf(interface);
+
+ dev->vsettings.vflip = vflip;
+ dev->vsettings.hflip = hflip;
+ 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
+ && ((endpoint->bEndpointAddress
+ & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
+ && ((endpoint->bmAttributes
+ & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_ISOC)) {
+ /* we found an isoc in endpoint */
+ dev->isoc_ep = (endpoint->bEndpointAddress & 0xF);
+ break;
+ }
+ }
+ if (!dev->isoc_ep) {
+ STK_ERROR("Could not find isoc-in endpoint");
+ kref_put(&dev->kref, stk_camera_cleanup);
+ return -ENODEV;
+ }
+ dev->vsettings.brightness = 0x7fff;
+ 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) {
+ kref_put(&dev->kref, stk_camera_cleanup);
+ return err;
+ }
+
+ stk_create_sysfs_files(&dev->vdev);
+
+ return 0;
+}
+
+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_remove_sysfs_files(&dev->vdev);
+
+ kref_put(&dev->kref, stk_camera_cleanup);
+}
+
+static struct usb_driver stk_camera_driver = {
+ .name = "stkwebcam",
+ .probe = stk_camera_probe,
+ .disconnect = stk_camera_disconnect,
+ .id_table = stkwebcam_table,
+};
+
+
+static int __init stk_camera_init(void)
+{
+ int result;
+
+ result = usb_register(&stk_camera_driver);
+ if (result)
+ STK_ERROR("usb_register failed ! Error number %d\n", result);
+
+
+ return result;
+}
+
+static void __exit stk_camera_exit(void)
+{
+ usb_deregister(&stk_camera_driver);
+}
+
+module_init(stk_camera_init);
+module_exit(stk_camera_exit);
+
+
projects / linux-2.6 / commitdiff