/* * Sunplus spca561 subdriver * * Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr * * V4L2 by Jean-Francois Moine * * 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 */ #define MODULE_NAME "spca561" #include "gspca.h" MODULE_AUTHOR("Michel Xhaard "); MODULE_DESCRIPTION("GSPCA/SPCA561 USB Camera Driver"); MODULE_LICENSE("GPL"); /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ __u16 contrast; /* rev72a only */ #define CONTRAST_MIN 0x0000 #define CONTRAST_DEF 0x2000 #define CONTRAST_MAX 0x3fff __u16 exposure; /* rev12a only */ #define EXPOSURE_MIN 1 #define EXPOSURE_DEF 200 #define EXPOSURE_MAX (4095 - 900) /* see set_exposure */ __u8 brightness; /* rev72a only */ #define BRIGHTNESS_MIN 0 #define BRIGHTNESS_DEF 32 #define BRIGHTNESS_MAX 63 __u8 white; /* rev12a only */ #define WHITE_MIN 1 #define WHITE_DEF 0x40 #define WHITE_MAX 0x7f __u8 autogain; #define AUTOGAIN_MIN 0 #define AUTOGAIN_DEF 1 #define AUTOGAIN_MAX 1 __u8 gain; /* rev12a only */ #define GAIN_MIN 0x0 #define GAIN_DEF 0x24 #define GAIN_MAX 0x24 #define EXPO12A_DEF 3 __u8 expo12a; /* expo/gain? for rev 12a */ __u8 chip_revision; #define Rev012A 0 #define Rev072A 1 signed char ag_cnt; #define AG_CNT_START 13 }; static struct v4l2_pix_format sif_012a_mode[] = { {160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 3}, {176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {320, 240, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240 * 4 / 8, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {352, 288, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288 * 4 / 8, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; static struct v4l2_pix_format sif_072a_mode[] = { {160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 160, .sizeimage = 160 * 120, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 3}, {176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 176, .sizeimage = 176 * 144, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 2}, {320, 240, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 320, .sizeimage = 320 * 240, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 1}, {352, 288, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE, .bytesperline = 352, .sizeimage = 352 * 288, .colorspace = V4L2_COLORSPACE_SRGB, .priv = 0}, }; /* * Initialization data * I'm not very sure how to split initialization from open data * chunks. For now, we'll consider everything as initialization */ /* Frame packet header offsets for the spca561 */ #define SPCA561_OFFSET_SNAP 1 #define SPCA561_OFFSET_TYPE 2 #define SPCA561_OFFSET_COMPRESS 3 #define SPCA561_OFFSET_FRAMSEQ 4 #define SPCA561_OFFSET_GPIO 5 #define SPCA561_OFFSET_USBBUFF 6 #define SPCA561_OFFSET_WIN2GRAVE 7 #define SPCA561_OFFSET_WIN2RAVE 8 #define SPCA561_OFFSET_WIN2BAVE 9 #define SPCA561_OFFSET_WIN2GBAVE 10 #define SPCA561_OFFSET_WIN1GRAVE 11 #define SPCA561_OFFSET_WIN1RAVE 12 #define SPCA561_OFFSET_WIN1BAVE 13 #define SPCA561_OFFSET_WIN1GBAVE 14 #define SPCA561_OFFSET_FREQ 15 #define SPCA561_OFFSET_VSYNC 16 #define SPCA561_OFFSET_DATA 1 #define SPCA561_INDEX_I2C_BASE 0x8800 #define SPCA561_SNAPBIT 0x20 #define SPCA561_SNAPCTRL 0x40 static void reg_w_val(struct usb_device *dev, __u16 index, __u8 value) { int ret; ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, NULL, 0, 500); PDEBUG(D_USBO, "reg write: 0x%02x:0x%02x", index, value); if (ret < 0) PDEBUG(D_ERR, "reg write: error %d", ret); } static void write_vector(struct gspca_dev *gspca_dev, const __u16 data[][2]) { struct usb_device *dev = gspca_dev->dev; int i; i = 0; while (data[i][1] != 0) { reg_w_val(dev, data[i][1], data[i][0]); i++; } } /* read 'len' bytes to gspca_dev->usb_buf */ static void reg_r(struct gspca_dev *gspca_dev, __u16 index, __u16 length) { usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, /* value */ index, gspca_dev->usb_buf, length, 500); } static void reg_w_buf(struct gspca_dev *gspca_dev, __u16 index, const __u8 *buffer, __u16 len) { memcpy(gspca_dev->usb_buf, buffer, len); usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, /* value */ index, gspca_dev->usb_buf, len, 500); } static void i2c_write(struct gspca_dev *gspca_dev, __u16 valeur, __u16 reg) { int retry = 60; __u8 DataLow; __u8 DataHight; DataLow = valeur; DataHight = valeur >> 8; reg_w_val(gspca_dev->dev, 0x8801, reg); reg_w_val(gspca_dev->dev, 0x8805, DataLow); reg_w_val(gspca_dev->dev, 0x8800, DataHight); while (retry--) { reg_r(gspca_dev, 0x8803, 1); if (!gspca_dev->usb_buf[0]) break; } } static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode) { int retry = 60; __u8 value; __u8 vallsb; reg_w_val(gspca_dev->dev, 0x8804, 0x92); reg_w_val(gspca_dev->dev, 0x8801, reg); reg_w_val(gspca_dev->dev, 0x8802, (mode | 0x01)); do { reg_r(gspca_dev, 0x8803, 1); if (!gspca_dev->usb_buf[0]) break; } while (--retry); if (retry == 0) return -1; reg_r(gspca_dev, 0x8800, 1); value = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8805, 1); vallsb = gspca_dev->usb_buf[0]; return ((int) value << 8) | vallsb; } static const __u16 spca561_init_data[][2] = { {0x0000, 0x8114}, /* Software GPIO output data */ {0x0001, 0x8114}, /* Software GPIO output data */ {0x0000, 0x8112}, /* Some kind of reset */ {0x0003, 0x8701}, /* PCLK clock delay adjustment */ {0x0001, 0x8703}, /* HSYNC from cmos inverted */ {0x0011, 0x8118}, /* Enable and conf sensor */ {0x0001, 0x8118}, /* Conf sensor */ {0x0092, 0x8804}, /* I know nothing about these */ {0x0010, 0x8802}, /* 0x88xx registers, so I won't */ /***************/ {0x000d, 0x8805}, /* sensor default setting */ {0x0001, 0x8801}, /* 1 <- 0x0d */ {0x0000, 0x8800}, {0x0018, 0x8805}, {0x0002, 0x8801}, /* 2 <- 0x18 */ {0x0000, 0x8800}, {0x0065, 0x8805}, {0x0004, 0x8801}, /* 4 <- 0x01 0x65 */ {0x0001, 0x8800}, {0x0021, 0x8805}, {0x0005, 0x8801}, /* 5 <- 0x21 */ {0x0000, 0x8800}, {0x00aa, 0x8805}, {0x0007, 0x8801}, /* 7 <- 0xaa */ {0x0000, 0x8800}, {0x0004, 0x8805}, {0x0020, 0x8801}, /* 0x20 <- 0x15 0x04 */ {0x0015, 0x8800}, {0x0002, 0x8805}, {0x0039, 0x8801}, /* 0x39 <- 0x02 */ {0x0000, 0x8800}, {0x0010, 0x8805}, {0x0035, 0x8801}, /* 0x35 <- 0x10 */ {0x0000, 0x8800}, {0x0049, 0x8805}, {0x0009, 0x8801}, /* 0x09 <- 0x10 0x49 */ {0x0010, 0x8800}, {0x000b, 0x8805}, {0x0028, 0x8801}, /* 0x28 <- 0x0b */ {0x0000, 0x8800}, {0x000f, 0x8805}, {0x003b, 0x8801}, /* 0x3b <- 0x0f */ {0x0000, 0x8800}, {0x0000, 0x8805}, {0x003c, 0x8801}, /* 0x3c <- 0x00 */ {0x0000, 0x8800}, /***************/ {0x0018, 0x8601}, /* Pixel/line selection for color separation */ {0x0000, 0x8602}, /* Optical black level for user setting */ {0x0060, 0x8604}, /* Optical black horizontal offset */ {0x0002, 0x8605}, /* Optical black vertical offset */ {0x0000, 0x8603}, /* Non-automatic optical black level */ {0x0002, 0x865b}, /* Horizontal offset for valid pixels */ {0x0000, 0x865f}, /* Vertical valid pixels window (x2) */ {0x00b0, 0x865d}, /* Horizontal valid pixels window (x2) */ {0x0090, 0x865e}, /* Vertical valid lines window (x2) */ {0x00e0, 0x8406}, /* Memory buffer threshold */ {0x0000, 0x8660}, /* Compensation memory stuff */ {0x0002, 0x8201}, /* Output address for r/w serial EEPROM */ {0x0008, 0x8200}, /* Clear valid bit for serial EEPROM */ {0x0001, 0x8200}, /* OprMode to be executed by hardware */ {0x0007, 0x8201}, /* Output address for r/w serial EEPROM */ {0x0008, 0x8200}, /* Clear valid bit for serial EEPROM */ {0x0001, 0x8200}, /* OprMode to be executed by hardware */ {0x0010, 0x8660}, /* Compensation memory stuff */ {0x0018, 0x8660}, /* Compensation memory stuff */ {0x0004, 0x8611}, /* R offset for white balance */ {0x0004, 0x8612}, /* Gr offset for white balance */ {0x0007, 0x8613}, /* B offset for white balance */ {0x0000, 0x8614}, /* Gb offset for white balance */ {0x008c, 0x8651}, /* R gain for white balance */ {0x008c, 0x8652}, /* Gr gain for white balance */ {0x00b5, 0x8653}, /* B gain for white balance */ {0x008c, 0x8654}, /* Gb gain for white balance */ {0x0002, 0x8502}, /* Maximum average bit rate stuff */ {0x0011, 0x8802}, {0x0087, 0x8700}, /* Set master clock (96Mhz????) */ {0x0081, 0x8702}, /* Master clock output enable */ {0x0000, 0x8500}, /* Set image type (352x288 no compression) */ /* Originally was 0x0010 (352x288 compression) */ {0x0002, 0x865b}, /* Horizontal offset for valid pixels */ {0x0003, 0x865c}, /* Vertical offset for valid lines */ /***************//* sensor active */ {0x0003, 0x8801}, /* 0x03 <- 0x01 0x21 //289 */ {0x0021, 0x8805}, {0x0001, 0x8800}, {0x0004, 0x8801}, /* 0x04 <- 0x01 0x65 //357 */ {0x0065, 0x8805}, {0x0001, 0x8800}, {0x0005, 0x8801}, /* 0x05 <- 0x2f */ {0x002f, 0x8805}, {0x0000, 0x8800}, {0x0006, 0x8801}, /* 0x06 <- 0 */ {0x0000, 0x8805}, {0x0000, 0x8800}, {0x000a, 0x8801}, /* 0x0a <- 2 */ {0x0002, 0x8805}, {0x0000, 0x8800}, {0x0009, 0x8801}, /* 0x09 <- 0x1061 */ {0x0061, 0x8805}, {0x0010, 0x8800}, {0x0035, 0x8801}, /* 0x35 <-0x14 */ {0x0014, 0x8805}, {0x0000, 0x8800}, {0x0030, 0x8112}, /* ISO and drop packet enable */ {0x0000, 0x8112}, /* Some kind of reset ???? */ {0x0009, 0x8118}, /* Enable sensor and set standby */ {0x0000, 0x8114}, /* Software GPIO output data */ {0x0000, 0x8114}, /* Software GPIO output data */ {0x0001, 0x8114}, /* Software GPIO output data */ {0x0000, 0x8112}, /* Some kind of reset ??? */ {0x0003, 0x8701}, {0x0001, 0x8703}, {0x0011, 0x8118}, {0x0001, 0x8118}, /***************/ {0x0092, 0x8804}, {0x0010, 0x8802}, {0x000d, 0x8805}, {0x0001, 0x8801}, {0x0000, 0x8800}, {0x0018, 0x8805}, {0x0002, 0x8801}, {0x0000, 0x8800}, {0x0065, 0x8805}, {0x0004, 0x8801}, {0x0001, 0x8800}, {0x0021, 0x8805}, {0x0005, 0x8801}, {0x0000, 0x8800}, {0x00aa, 0x8805}, {0x0007, 0x8801}, /* mode 0xaa */ {0x0000, 0x8800}, {0x0004, 0x8805}, {0x0020, 0x8801}, {0x0015, 0x8800}, /* mode 0x0415 */ {0x0002, 0x8805}, {0x0039, 0x8801}, {0x0000, 0x8800}, {0x0010, 0x8805}, {0x0035, 0x8801}, {0x0000, 0x8800}, {0x0049, 0x8805}, {0x0009, 0x8801}, {0x0010, 0x8800}, {0x000b, 0x8805}, {0x0028, 0x8801}, {0x0000, 0x8800}, {0x000f, 0x8805}, {0x003b, 0x8801}, {0x0000, 0x8800}, {0x0000, 0x8805}, {0x003c, 0x8801}, {0x0000, 0x8800}, {0x0002, 0x8502}, {0x0039, 0x8801}, {0x0000, 0x8805}, {0x0000, 0x8800}, {0x0087, 0x8700}, /* overwrite by start */ {0x0081, 0x8702}, {0x0000, 0x8500}, /* {0x0010, 0x8500}, -- Previous line was this */ {0x0002, 0x865b}, {0x0003, 0x865c}, /***************/ {0x0003, 0x8801}, /* 0x121-> 289 */ {0x0021, 0x8805}, {0x0001, 0x8800}, {0x0004, 0x8801}, /* 0x165 -> 357 */ {0x0065, 0x8805}, {0x0001, 0x8800}, {0x0005, 0x8801}, /* 0x2f //blanking control colonne */ {0x002f, 0x8805}, {0x0000, 0x8800}, {0x0006, 0x8801}, /* 0x00 //blanking mode row */ {0x0000, 0x8805}, {0x0000, 0x8800}, {0x000a, 0x8801}, /* 0x01 //0x02 */ {0x0001, 0x8805}, {0x0000, 0x8800}, {0x0009, 0x8801}, /* 0x1061 - setexposure times && pixel clock * 0001 0 | 000 0110 0001 */ {0x0061, 0x8805}, /* 61 31 */ {0x0008, 0x8800}, /* 08 */ {0x0035, 0x8801}, /* 0x14 - set gain general */ {0x001f, 0x8805}, /* 0x14 */ {0x0000, 0x8800}, {0x000e, 0x8112}, /* white balance - was 30 */ {} }; /******************** QC Express etch2 stuff ********************/ static const __u16 Pb100_1map8300[][2] = { /* reg, value */ {0x8320, 0x3304}, {0x8303, 0x0125}, /* image area */ {0x8304, 0x0169}, {0x8328, 0x000b}, {0x833c, 0x0001}, /*fixme: win:07*/ {0x832f, 0x1904}, /*fixme: was 0419*/ {0x8307, 0x00aa}, {0x8301, 0x0003}, {0x8302, 0x000e}, {} }; static const __u16 Pb100_2map8300[][2] = { /* reg, value */ {0x8339, 0x0000}, {0x8307, 0x00aa}, {} }; static const __u16 spca561_161rev12A_data1[][2] = { {0x29, 0x8118}, /* white balance - was 21 */ {0x08, 0x8114}, /* white balance - was 01 */ {0x0e, 0x8112}, /* white balance - was 00 */ {0x00, 0x8102}, /* white balance - new */ {0x92, 0x8804}, {0x04, 0x8802}, /* windows uses 08 */ {} }; static const __u16 spca561_161rev12A_data2[][2] = { {0x21, 0x8118}, {0x10, 0x8500}, {0x07, 0x8601}, {0x07, 0x8602}, {0x04, 0x8501}, {0x21, 0x8118}, {0x07, 0x8201}, /* windows uses 02 */ {0x08, 0x8200}, {0x01, 0x8200}, {0x00, 0x8114}, {0x01, 0x8114}, /* windows uses 00 */ {0x90, 0x8604}, {0x00, 0x8605}, {0xb0, 0x8603}, /* sensor gains */ {0x07, 0x8601}, /* white balance - new */ {0x07, 0x8602}, /* white balance - new */ {0x00, 0x8610}, /* *red */ {0x00, 0x8611}, /* 3f *green */ {0x00, 0x8612}, /* green *blue */ {0x00, 0x8613}, /* blue *green */ {0x43, 0x8614}, /* green *red - white balance - was 0x35 */ {0x40, 0x8615}, /* 40 *green - white balance - was 0x35 */ {0x71, 0x8616}, /* 7a *blue - white balance - was 0x35 */ {0x40, 0x8617}, /* 40 *green - white balance - was 0x35 */ {0x0c, 0x8620}, /* 0c */ {0xc8, 0x8631}, /* c8 */ {0xc8, 0x8634}, /* c8 */ {0x23, 0x8635}, /* 23 */ {0x1f, 0x8636}, /* 1f */ {0xdd, 0x8637}, /* dd */ {0xe1, 0x8638}, /* e1 */ {0x1d, 0x8639}, /* 1d */ {0x21, 0x863a}, /* 21 */ {0xe3, 0x863b}, /* e3 */ {0xdf, 0x863c}, /* df */ {0xf0, 0x8505}, {0x32, 0x850a}, /* {0x99, 0x8700}, * - white balance - new (removed) */ {} }; static void sensor_mapwrite(struct gspca_dev *gspca_dev, const __u16 sensormap[][2]) { int i = 0; __u8 usbval[2]; while (sensormap[i][0]) { usbval[0] = sensormap[i][1]; usbval[1] = sensormap[i][1] >> 8; reg_w_buf(gspca_dev, sensormap[i][0], usbval, 2); i++; } } static void init_161rev12A(struct gspca_dev *gspca_dev) { /* sensor_reset(gspca_dev); (not in win) */ write_vector(gspca_dev, spca561_161rev12A_data1); sensor_mapwrite(gspca_dev, Pb100_1map8300); /*fixme: should be in sd_start*/ write_vector(gspca_dev, spca561_161rev12A_data2); sensor_mapwrite(gspca_dev, Pb100_2map8300); } /* this function is called at probe time */ static int sd_config(struct gspca_dev *gspca_dev, const struct usb_device_id *id) { struct sd *sd = (struct sd *) gspca_dev; struct cam *cam; __u16 vendor, product; __u8 data1, data2; /* Read frm global register the USB product and vendor IDs, just to * prove that we can communicate with the device. This works, which * confirms at we are communicating properly and that the device * is a 561. */ reg_r(gspca_dev, 0x8104, 1); data1 = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8105, 1); data2 = gspca_dev->usb_buf[0]; vendor = (data2 << 8) | data1; reg_r(gspca_dev, 0x8106, 1); data1 = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8107, 1); data2 = gspca_dev->usb_buf[0]; product = (data2 << 8) | data1; if (vendor != id->idVendor || product != id->idProduct) { PDEBUG(D_PROBE, "Bad vendor / product from device"); return -EINVAL; } cam = &gspca_dev->cam; cam->epaddr = 0x01; gspca_dev->nbalt = 7 + 1; /* choose alternate 7 first */ sd->chip_revision = id->driver_info; if (sd->chip_revision == Rev012A) { cam->cam_mode = sif_012a_mode; cam->nmodes = ARRAY_SIZE(sif_012a_mode); } else { cam->cam_mode = sif_072a_mode; cam->nmodes = ARRAY_SIZE(sif_072a_mode); } sd->brightness = BRIGHTNESS_DEF; sd->contrast = CONTRAST_DEF; sd->white = WHITE_DEF; sd->exposure = EXPOSURE_DEF; sd->autogain = AUTOGAIN_DEF; sd->gain = GAIN_DEF; sd->expo12a = EXPO12A_DEF; return 0; } /* this function is called at probe and resume time */ static int sd_init_12a(struct gspca_dev *gspca_dev) { PDEBUG(D_STREAM, "Chip revision: 012a"); init_161rev12A(gspca_dev); return 0; } static int sd_init_72a(struct gspca_dev *gspca_dev) { PDEBUG(D_STREAM, "Chip revision: 072a"); write_vector(gspca_dev, spca561_init_data); return 0; } static void setcontrast(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; struct usb_device *dev = gspca_dev->dev; __u8 lowb; switch (sd->chip_revision) { case Rev072A: lowb = sd->contrast >> 8; reg_w_val(dev, 0x8651, lowb); reg_w_val(dev, 0x8652, lowb); reg_w_val(dev, 0x8653, lowb); reg_w_val(dev, 0x8654, lowb); break; default: { /* case Rev012A: { */ static const __u8 Reg8391[] = { 0x92, 0x30, 0x20, 0x00, 0x0c, 0x00, 0x00, 0x00 }; reg_w_buf(gspca_dev, 0x8391, Reg8391, 8); reg_w_buf(gspca_dev, 0x8390, Reg8391, 8); break; } } } /* rev12a only */ static void setwhite(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; __u16 white; __u8 reg8614, reg8616; white = sd->white; /* try to emulate MS-win as possible */ reg8616 = 0x90 - white * 5 / 8; reg_w_val(gspca_dev->dev, 0x8616, reg8616); reg8614 = 0x20 + white * 3 / 8; reg_w_val(gspca_dev->dev, 0x8614, reg8614); } /* rev 12a only */ static void setexposure(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int expo; int clock_divider; __u8 data[2]; /* Register 0x8309 controls exposure for the spca561, the basic exposure setting goes from 1-2047, where 1 is completely dark and 2047 is very bright. It not only influences exposure but also the framerate (to allow for longer exposure) from 1 - 300 it only raises the exposure time then from 300 - 600 it halves the framerate to be able to further raise the exposure time and for every 300 more it halves the framerate again. This allows for a maximum exposure time of circa 0.2 - 0.25 seconds (30 / (2000/3000) fps). Sometimes this is not enough, the 1-2047 uses bits 0-10, bits 11-12 configure a divider for the base framerate which us used at the exposure setting of 1-300. These bits configure the base framerate according to the following formula: fps = 60 / (value + 2) */ if (sd->exposure < 2048) { expo = sd->exposure; clock_divider = 0; } else { /* Add 900 to make the 0 setting of the second part of the exposure equal to the 2047 setting of the first part. */ expo = (sd->exposure - 2048) + 900; clock_divider = 3; } expo |= clock_divider << 11; data[0] = expo; data[1] = expo >> 8; reg_w_buf(gspca_dev, 0x8309, data, 2); } /* rev 12a only */ static void setgain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; __u8 data[2]; data[0] = sd->gain; data[1] = 0; reg_w_buf(gspca_dev, 0x8335, data, 2); } static void setautogain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (sd->autogain) sd->ag_cnt = AG_CNT_START; else sd->ag_cnt = -1; } static int sd_start_12a(struct gspca_dev *gspca_dev) { struct usb_device *dev = gspca_dev->dev; int Clck = 0x8a; /* lower 0x8X values lead to fps > 30 */ __u8 Reg8307[] = { 0xaa, 0x00 }; int mode; mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv; if (mode <= 1) { /* Use compression on 320x240 and above */ reg_w_val(dev, 0x8500, 0x10 | mode); } else { /* I couldn't get the compression to work below 320x240 * Fortunately at these resolutions the bandwidth * is sufficient to push raw frames at ~20fps */ reg_w_val(dev, 0x8500, mode); } /* -- qq@kuku.eu.org */ reg_w_buf(gspca_dev, 0x8307, Reg8307, 2); reg_w_val(gspca_dev->dev, 0x8700, Clck); /* 0x8f 0x85 0x27 clock */ reg_w_val(gspca_dev->dev, 0x8112, 0x1e | 0x20); reg_w_val(gspca_dev->dev, 0x850b, 0x03); setcontrast(gspca_dev); setwhite(gspca_dev); setautogain(gspca_dev); setexposure(gspca_dev); return 0; } static int sd_start_72a(struct gspca_dev *gspca_dev) { struct usb_device *dev = gspca_dev->dev; int Clck; int mode; mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv; switch (mode) { default: /* case 0: case 1: */ Clck = 0x25; break; case 2: Clck = 0x22; break; case 3: Clck = 0x21; break; } reg_w_val(dev, 0x8500, mode); /* mode */ reg_w_val(dev, 0x8700, Clck); /* 0x27 clock */ reg_w_val(dev, 0x8112, 0x10 | 0x20); setautogain(gspca_dev); return 0; } static void sd_stopN(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (sd->chip_revision == Rev012A) { reg_w_val(gspca_dev->dev, 0x8112, 0x0e); } else { reg_w_val(gspca_dev->dev, 0x8112, 0x20); /* reg_w_val(gspca_dev->dev, 0x8102, 0x00); ?? */ } } static void sd_stop0(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; if (sd->chip_revision == Rev012A) { reg_w_val(gspca_dev->dev, 0x8118, 0x29); reg_w_val(gspca_dev->dev, 0x8114, 0x08); } /* reg_w_val(gspca_dev->dev, 0x8114, 0); */ } static void do_autogain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int expotimes; int pixelclk; int gainG; __u8 R, Gr, Gb, B; int y; __u8 luma_mean = 110; __u8 luma_delta = 20; __u8 spring = 4; __u8 reg8339[2]; if (sd->ag_cnt < 0) return; if (--sd->ag_cnt >= 0) return; sd->ag_cnt = AG_CNT_START; switch (sd->chip_revision) { case Rev072A: reg_r(gspca_dev, 0x8621, 1); Gr = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8622, 1); R = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8623, 1); B = gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8624, 1); Gb = gspca_dev->usb_buf[0]; y = (77 * R + 75 * (Gr + Gb) + 29 * B) >> 8; /* u= (128*B-(43*(Gr+Gb+R))) >> 8; */ /* v= (128*R-(53*(Gr+Gb))-21*B) >> 8; */ /* PDEBUG(D_CONF,"reading Y %d U %d V %d ",y,u,v); */ if (y < luma_mean - luma_delta || y > luma_mean + luma_delta) { expotimes = i2c_read(gspca_dev, 0x09, 0x10); pixelclk = 0x0800; expotimes = expotimes & 0x07ff; /* PDEBUG(D_PACK, "Exposition Times 0x%03X Clock 0x%04X ", expotimes,pixelclk); */ gainG = i2c_read(gspca_dev, 0x35, 0x10); /* PDEBUG(D_PACK, "reading Gain register %d", gainG); */ expotimes += (luma_mean - y) >> spring; gainG += (luma_mean - y) / 50; /* PDEBUG(D_PACK, "compute expotimes %d gain %d", expotimes,gainG); */ if (gainG > 0x3f) gainG = 0x3f; else if (gainG < 4) gainG = 3; i2c_write(gspca_dev, gainG, 0x35); if (expotimes >= 0x0256) expotimes = 0x0256; else if (expotimes < 4) expotimes = 3; i2c_write(gspca_dev, expotimes | pixelclk, 0x09); } break; case Rev012A: reg_r(gspca_dev, 0x8330, 2); if (gspca_dev->usb_buf[1] > 0x08) { reg8339[0] = ++sd->expo12a; reg8339[1] = 0; reg_w_buf(gspca_dev, 0x8339, reg8339, 2); } else if (gspca_dev->usb_buf[1] < 0x02) { reg8339[0] = --sd->expo12a; reg8339[1] = 0; reg_w_buf(gspca_dev, 0x8339, reg8339, 2); } break; } } static void sd_pkt_scan(struct gspca_dev *gspca_dev, struct gspca_frame *frame, /* target */ __u8 *data, /* isoc packet */ int len) /* iso packet length */ { struct sd *sd = (struct sd *) gspca_dev; switch (data[0]) { case 0: /* start of frame */ frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, data, 0); data += SPCA561_OFFSET_DATA; len -= SPCA561_OFFSET_DATA; if (data[1] & 0x10) { /* compressed bayer */ gspca_frame_add(gspca_dev, FIRST_PACKET, frame, data, len); } else { /* raw bayer (with a header, which we skip) */ if (sd->chip_revision == Rev012A) { data += 20; len -= 20; } else { data += 16; len -= 16; } gspca_frame_add(gspca_dev, FIRST_PACKET, frame, data, len); } return; case 0xff: /* drop */ /* gspca_dev->last_packet_type = DISCARD_PACKET; */ return; } data++; len--; gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len); } /* rev 72a only */ static void setbrightness(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; __u8 value; value = sd->brightness; reg_w_val(gspca_dev->dev, 0x8611, value); reg_w_val(gspca_dev->dev, 0x8612, value); reg_w_val(gspca_dev->dev, 0x8613, value); reg_w_val(gspca_dev->dev, 0x8614, value); } static void getbrightness(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; __u16 tot; tot = 0; reg_r(gspca_dev, 0x8611, 1); tot += gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8612, 1); tot += gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8613, 1); tot += gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8614, 1); tot += gspca_dev->usb_buf[0]; sd->brightness = tot >> 2; } /* rev72a only */ static void getcontrast(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; __u16 tot; tot = 0; reg_r(gspca_dev, 0x8651, 1); tot += gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8652, 1); tot += gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8653, 1); tot += gspca_dev->usb_buf[0]; reg_r(gspca_dev, 0x8654, 1); tot += gspca_dev->usb_buf[0]; sd->contrast = tot << 6; PDEBUG(D_CONF, "get contrast %d", sd->contrast); } /* rev 72a only */ static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->brightness = val; if (gspca_dev->streaming) setbrightness(gspca_dev); return 0; } static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; getbrightness(gspca_dev); *val = sd->brightness; return 0; } /* rev 72a only */ static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->contrast = val; if (gspca_dev->streaming) setcontrast(gspca_dev); return 0; } static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; getcontrast(gspca_dev); *val = sd->contrast; return 0; } static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->autogain = val; if (gspca_dev->streaming) setautogain(gspca_dev); return 0; } static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->autogain; return 0; } /* rev12a only */ static int sd_setwhite(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->white = val; if (gspca_dev->streaming) setwhite(gspca_dev); return 0; } static int sd_getwhite(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->white; return 0; } /* rev12a only */ static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->exposure = val; if (gspca_dev->streaming) setexposure(gspca_dev); return 0; } static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->exposure; return 0; } /* rev12a only */ static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->gain = val; if (gspca_dev->streaming) setgain(gspca_dev); return 0; } static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->gain; return 0; } /* control tables */ static struct ctrl sd_ctrls_12a[] = { { { .id = V4L2_CID_DO_WHITE_BALANCE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "White Balance", .minimum = WHITE_MIN, .maximum = WHITE_MAX, .step = 1, .default_value = WHITE_DEF, }, .set = sd_setwhite, .get = sd_getwhite, }, { { .id = V4L2_CID_EXPOSURE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Exposure", .minimum = EXPOSURE_MIN, .maximum = EXPOSURE_MAX, .step = 1, .default_value = EXPOSURE_DEF, }, .set = sd_setexposure, .get = sd_getexposure, }, { { .id = V4L2_CID_AUTOGAIN, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Auto Gain", .minimum = AUTOGAIN_MIN, .maximum = AUTOGAIN_MAX, .step = 1, .default_value = AUTOGAIN_DEF, }, .set = sd_setautogain, .get = sd_getautogain, }, { { .id = V4L2_CID_GAIN, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Gain", .minimum = GAIN_MIN, .maximum = GAIN_MAX, .step = 1, .default_value = GAIN_DEF, }, .set = sd_setgain, .get = sd_getgain, }, }; static struct ctrl sd_ctrls_72a[] = { { { .id = V4L2_CID_BRIGHTNESS, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Brightness", .minimum = BRIGHTNESS_MIN, .maximum = BRIGHTNESS_MAX, .step = 1, .default_value = BRIGHTNESS_DEF, }, .set = sd_setbrightness, .get = sd_getbrightness, }, { { .id = V4L2_CID_CONTRAST, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Contrast", .minimum = CONTRAST_MIN, .maximum = CONTRAST_MAX, .step = 1, .default_value = CONTRAST_DEF, }, .set = sd_setcontrast, .get = sd_getcontrast, }, { { .id = V4L2_CID_AUTOGAIN, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Auto Gain", .minimum = AUTOGAIN_MIN, .maximum = AUTOGAIN_MAX, .step = 1, .default_value = AUTOGAIN_DEF, }, .set = sd_setautogain, .get = sd_getautogain, }, }; /* sub-driver description */ static const struct sd_desc sd_desc_12a = { .name = MODULE_NAME, .ctrls = sd_ctrls_12a, .nctrls = ARRAY_SIZE(sd_ctrls_12a), .config = sd_config, .init = sd_init_12a, .start = sd_start_12a, .stopN = sd_stopN, .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, /* .dq_callback = do_autogain, * fixme */ }; static const struct sd_desc sd_desc_72a = { .name = MODULE_NAME, .ctrls = sd_ctrls_72a, .nctrls = ARRAY_SIZE(sd_ctrls_72a), .config = sd_config, .init = sd_init_72a, .start = sd_start_72a, .stopN = sd_stopN, .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, .dq_callback = do_autogain, }; static const struct sd_desc *sd_desc[2] = { &sd_desc_12a, &sd_desc_72a }; /* -- module initialisation -- */ static const __devinitdata struct usb_device_id device_table[] = { {USB_DEVICE(0x041e, 0x401a), .driver_info = Rev072A}, {USB_DEVICE(0x041e, 0x403b), .driver_info = Rev012A}, {USB_DEVICE(0x0458, 0x7004), .driver_info = Rev072A}, {USB_DEVICE(0x046d, 0x0928), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x0929), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092a), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092b), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092c), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092d), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092e), .driver_info = Rev012A}, {USB_DEVICE(0x046d, 0x092f), .driver_info = Rev012A}, {USB_DEVICE(0x04fc, 0x0561), .driver_info = Rev072A}, {USB_DEVICE(0x060b, 0xa001), .driver_info = Rev072A}, {USB_DEVICE(0x10fd, 0x7e50), .driver_info = Rev072A}, {USB_DEVICE(0xabcd, 0xcdee), .driver_info = Rev072A}, {} }; MODULE_DEVICE_TABLE(usb, device_table); /* -- device connect -- */ static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id) { return gspca_dev_probe(intf, id, sd_desc[id->driver_info], sizeof(struct sd), THIS_MODULE); } static struct usb_driver sd_driver = { .name = MODULE_NAME, .id_table = device_table, .probe = sd_probe, .disconnect = gspca_disconnect, #ifdef CONFIG_PM .suspend = gspca_suspend, .resume = gspca_resume, #endif }; /* -- module insert / remove -- */ static int __init sd_mod_init(void) { if (usb_register(&sd_driver) < 0) return -1; PDEBUG(D_PROBE, "registered"); return 0; } static void __exit sd_mod_exit(void) { usb_deregister(&sd_driver); PDEBUG(D_PROBE, "deregistered"); } module_init(sd_mod_init); module_exit(sd_mod_exit);