diff options
Diffstat (limited to 'drivers/media/usb/stkwebcam/stk-sensor.c')
| -rw-r--r-- | drivers/media/usb/stkwebcam/stk-sensor.c | 595 |
1 files changed, 595 insertions, 0 deletions
diff --git a/drivers/media/usb/stkwebcam/stk-sensor.c b/drivers/media/usb/stkwebcam/stk-sensor.c new file mode 100644 index 000000000000..e546b014d7ad --- /dev/null +++ b/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; +} + |
