/* * Pixart PAC7302 library * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li * * V4L2 by Jean-Francois Moine * * Separated from Pixart PAC7311 library by Márton Németh * * 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 */ /* Some documentation about various registers as determined by trial and error. When the register addresses differ between the 7202 and the 7311 the 2 different addresses are written as 7302addr/7311addr, when one of the 2 addresses is a - sign that register description is not valid for the matching IC. Register page 1: Address Description -/0x08 Unknown compressor related, must always be 8 except when not in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 ! -/0x1b Auto white balance related, bit 0 is AWB enable (inverted) bits 345 seem to toggle per color gains on/off (inverted) 0x78 Global control, bit 6 controls the LED (inverted) -/0x80 JPEG compression ratio ? Best not touched Register page 3/4: Address Description 0x02 Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on the 7302, so one of 3, 6, 9, ..., except when between 6 and 12? -/0x0f Master gain 1-245, low value = high gain 0x10/- Master gain 0-31 -/0x10 Another gain 0-15, limited influence (1-2x gain I guess) 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused -/0x27 Seems to toggle various gains on / off, Setting bit 7 seems to completely disable the analog amplification block. Set to 0x68 for max gain, 0x14 for minimal gain. */ #define MODULE_NAME "pac7302" #include "gspca.h" MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li"); MODULE_DESCRIPTION("Pixart PAC7302"); MODULE_LICENSE("GPL"); /* specific webcam descriptor for pac7302 */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ unsigned char brightness; unsigned char contrast; unsigned char colors; unsigned char gain; unsigned char exposure; unsigned char autogain; __u8 hflip; __u8 vflip; u8 sof_read; u8 autogain_ignore_frames; atomic_t avg_lum; }; /* V4L2 controls supported by the driver */ static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val); static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val); static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val); static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val); static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val); static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val); static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val); static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val); static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val); static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val); static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val); static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val); static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val); static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val); static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val); static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val); static struct ctrl sd_ctrls[] = { /* This control is pac7302 only */ { { .id = V4L2_CID_BRIGHTNESS, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Brightness", .minimum = 0, #define BRIGHTNESS_MAX 0x20 .maximum = BRIGHTNESS_MAX, .step = 1, #define BRIGHTNESS_DEF 0x10 .default_value = BRIGHTNESS_DEF, }, .set = sd_setbrightness, .get = sd_getbrightness, }, /* This control is for both the 7302 and the 7311 */ { { .id = V4L2_CID_CONTRAST, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Contrast", .minimum = 0, #define CONTRAST_MAX 255 .maximum = CONTRAST_MAX, .step = 1, #define CONTRAST_DEF 127 .default_value = CONTRAST_DEF, }, .set = sd_setcontrast, .get = sd_getcontrast, }, /* This control is pac7302 only */ { { .id = V4L2_CID_SATURATION, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Saturation", .minimum = 0, #define COLOR_MAX 255 .maximum = COLOR_MAX, .step = 1, #define COLOR_DEF 127 .default_value = COLOR_DEF, }, .set = sd_setcolors, .get = sd_getcolors, }, /* All controls below are for both the 7302 and the 7311 */ { { .id = V4L2_CID_GAIN, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Gain", .minimum = 0, #define GAIN_MAX 255 .maximum = GAIN_MAX, .step = 1, #define GAIN_DEF 127 #define GAIN_KNEE 255 /* Gain seems to cause little noise on the pac73xx */ .default_value = GAIN_DEF, }, .set = sd_setgain, .get = sd_getgain, }, { { .id = V4L2_CID_EXPOSURE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "Exposure", .minimum = 0, #define EXPOSURE_MAX 255 .maximum = EXPOSURE_MAX, .step = 1, #define EXPOSURE_DEF 16 /* 32 ms / 30 fps */ #define EXPOSURE_KNEE 50 /* 100 ms / 10 fps */ .default_value = EXPOSURE_DEF, }, .set = sd_setexposure, .get = sd_getexposure, }, { { .id = V4L2_CID_AUTOGAIN, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Auto Gain", .minimum = 0, .maximum = 1, .step = 1, #define AUTOGAIN_DEF 1 .default_value = AUTOGAIN_DEF, }, .set = sd_setautogain, .get = sd_getautogain, }, { { .id = V4L2_CID_HFLIP, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Mirror", .minimum = 0, .maximum = 1, .step = 1, #define HFLIP_DEF 0 .default_value = HFLIP_DEF, }, .set = sd_sethflip, .get = sd_gethflip, }, { { .id = V4L2_CID_VFLIP, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Vflip", .minimum = 0, .maximum = 1, .step = 1, #define VFLIP_DEF 0 .default_value = VFLIP_DEF, }, .set = sd_setvflip, .get = sd_getvflip, }, }; static const struct v4l2_pix_format vga_mode[] = { {640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE, .bytesperline = 640, .sizeimage = 640 * 480 * 3 / 8 + 590, .colorspace = V4L2_COLORSPACE_JPEG, .priv = 0}, }; #define LOAD_PAGE3 255 #define LOAD_PAGE4 254 #define END_OF_SEQUENCE 0 /* pac 7302 */ static const __u8 init_7302[] = { /* index,value */ 0xff, 0x01, /* page 1 */ 0x78, 0x00, /* deactivate */ 0xff, 0x01, 0x78, 0x40, /* led off */ }; static const __u8 start_7302[] = { /* index, len, [value]* */ 0xff, 1, 0x00, /* page 0 */ 0x00, 12, 0x01, 0x40, 0x40, 0x40, 0x01, 0xe0, 0x02, 0x80, 0x00, 0x00, 0x00, 0x00, 0x0d, 24, 0x03, 0x01, 0x00, 0xb5, 0x07, 0xcb, 0x00, 0x00, 0x07, 0xc8, 0x00, 0xea, 0x07, 0xcf, 0x07, 0xf7, 0x07, 0x7e, 0x01, 0x0b, 0x00, 0x00, 0x00, 0x11, 0x26, 2, 0xaa, 0xaa, 0x2e, 1, 0x31, 0x38, 1, 0x01, 0x3a, 3, 0x14, 0xff, 0x5a, 0x43, 11, 0x00, 0x0a, 0x18, 0x11, 0x01, 0x2c, 0x88, 0x11, 0x00, 0x54, 0x11, 0x55, 1, 0x00, 0x62, 4, 0x10, 0x1e, 0x1e, 0x18, 0x6b, 1, 0x00, 0x6e, 3, 0x08, 0x06, 0x00, 0x72, 3, 0x00, 0xff, 0x00, 0x7d, 23, 0x01, 0x01, 0x58, 0x46, 0x50, 0x3c, 0x50, 0x3c, 0x54, 0x46, 0x54, 0x56, 0x52, 0x50, 0x52, 0x50, 0x56, 0x64, 0xa4, 0x00, 0xda, 0x00, 0x00, 0xa2, 10, 0x22, 0x2c, 0x3c, 0x54, 0x69, 0x7c, 0x9c, 0xb9, 0xd2, 0xeb, 0xaf, 1, 0x02, 0xb5, 2, 0x08, 0x08, 0xb8, 2, 0x08, 0x88, 0xc4, 4, 0xae, 0x01, 0x04, 0x01, 0xcc, 1, 0x00, 0xd1, 11, 0x01, 0x30, 0x49, 0x5e, 0x6f, 0x7f, 0x8e, 0xa9, 0xc1, 0xd7, 0xec, 0xdc, 1, 0x01, 0xff, 1, 0x01, /* page 1 */ 0x12, 3, 0x02, 0x00, 0x01, 0x3e, 2, 0x00, 0x00, 0x76, 5, 0x01, 0x20, 0x40, 0x00, 0xf2, 0x7c, 1, 0x00, 0x7f, 10, 0x4b, 0x0f, 0x01, 0x2c, 0x02, 0x58, 0x03, 0x20, 0x02, 0x00, 0x96, 5, 0x01, 0x10, 0x04, 0x01, 0x04, 0xc8, 14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x07, 0x00, 0x01, 0x07, 0x04, 0x01, 0xd8, 1, 0x01, 0xdb, 2, 0x00, 0x01, 0xde, 7, 0x00, 0x01, 0x04, 0x04, 0x00, 0x00, 0x00, 0xe6, 4, 0x00, 0x00, 0x00, 0x01, 0xeb, 1, 0x00, 0xff, 1, 0x02, /* page 2 */ 0x22, 1, 0x00, 0xff, 1, 0x03, /* page 3 */ 0, LOAD_PAGE3, /* load the page 3 */ 0x11, 1, 0x01, 0xff, 1, 0x02, /* page 2 */ 0x13, 1, 0x00, 0x22, 4, 0x1f, 0xa4, 0xf0, 0x96, 0x27, 2, 0x14, 0x0c, 0x2a, 5, 0xc8, 0x00, 0x18, 0x12, 0x22, 0x64, 8, 0x00, 0x00, 0xf0, 0x01, 0x14, 0x44, 0x44, 0x44, 0x6e, 1, 0x08, 0xff, 1, 0x01, /* page 1 */ 0x78, 1, 0x00, 0, END_OF_SEQUENCE /* end of sequence */ }; #define SKIP 0xaa /* page 3 - the value SKIP says skip the index - see reg_w_page() */ static const __u8 page3_7302[] = { 0x90, 0x40, 0x03, 0x50, 0xc2, 0x01, 0x14, 0x16, 0x14, 0x12, 0x00, 0x00, 0x00, 0x02, 0x33, 0x00, 0x0f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x47, 0x01, 0xb3, 0x01, 0x00, 0x00, 0x08, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x21, 0x00, 0x00, 0x00, 0x54, 0xf4, 0x02, 0x52, 0x54, 0xa4, 0xb8, 0xe0, 0x2a, 0xf6, 0x00, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0xf2, 0x1f, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xc0, 0x10, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0xff, 0x03, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc8, 0xc8, 0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x08, 0x10, 0x24, 0x40, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02, 0x47, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xfa, 0x00, 0x64, 0x5a, 0x28, 0x00, 0x00 }; static int reg_w_buf(struct gspca_dev *gspca_dev, __u8 index, const char *buffer, int len) { int ret; memcpy(gspca_dev->usb_buf, buffer, len); ret = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 1, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, /* value */ index, gspca_dev->usb_buf, len, 500); if (ret < 0) PDEBUG(D_ERR, "reg_w_buf(): " "Failed to write registers to index 0x%x, error %i", index, ret); return ret; } static int reg_w(struct gspca_dev *gspca_dev, __u8 index, __u8 value) { int ret; gspca_dev->usb_buf[0] = value; ret = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, gspca_dev->usb_buf, 1, 500); if (ret < 0) PDEBUG(D_ERR, "reg_w(): " "Failed to write register to index 0x%x, value 0x%x, error %i", index, value, ret); return ret; } static int reg_w_seq(struct gspca_dev *gspca_dev, const __u8 *seq, int len) { int ret = 0; while (--len >= 0) { if (0 <= ret) ret = reg_w(gspca_dev, seq[0], seq[1]); seq += 2; } return ret; } /* load the beginning of a page */ static int reg_w_page(struct gspca_dev *gspca_dev, const __u8 *page, int len) { int index; int ret = 0; for (index = 0; index < len; index++) { if (page[index] == SKIP) /* skip this index */ continue; gspca_dev->usb_buf[0] = page[index]; ret = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0), 0, /* request */ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, index, gspca_dev->usb_buf, 1, 500); if (ret < 0) { PDEBUG(D_ERR, "reg_w_page(): " "Failed to write register to index 0x%x, " "value 0x%x, error %i", index, page[index], ret); break; } } return ret; } /* output a variable sequence */ static int reg_w_var(struct gspca_dev *gspca_dev, const __u8 *seq, const __u8 *page3, unsigned int page3_len, const __u8 *page4, unsigned int page4_len) { int index, len; int ret = 0; for (;;) { index = *seq++; len = *seq++; switch (len) { case END_OF_SEQUENCE: return ret; case LOAD_PAGE4: ret = reg_w_page(gspca_dev, page4, page4_len); break; case LOAD_PAGE3: ret = reg_w_page(gspca_dev, page3, page3_len); break; default: if (len > USB_BUF_SZ) { PDEBUG(D_ERR|D_STREAM, "Incorrect variable sequence"); return -EINVAL; } while (len > 0) { if (len < 8) { ret = reg_w_buf(gspca_dev, index, seq, len); if (ret < 0) return ret; seq += len; break; } ret = reg_w_buf(gspca_dev, index, seq, 8); seq += 8; index += 8; len -= 8; } } if (ret < 0) return ret; } /* not reached */ } /* this function is called at probe time for pac7302 */ 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; cam = &gspca_dev->cam; PDEBUG(D_CONF, "Find Sensor PAC7302"); cam->cam_mode = vga_mode; /* only 640x480 */ cam->nmodes = ARRAY_SIZE(vga_mode); sd->brightness = BRIGHTNESS_DEF; sd->contrast = CONTRAST_DEF; sd->colors = COLOR_DEF; sd->gain = GAIN_DEF; sd->exposure = EXPOSURE_DEF; sd->autogain = AUTOGAIN_DEF; sd->hflip = HFLIP_DEF; sd->vflip = VFLIP_DEF; return 0; } /* This function is used by pac7302 only */ static int setbrightcont(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int i, v; int ret; static const __u8 max[10] = {0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb, 0xd4, 0xec}; static const __u8 delta[10] = {0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17, 0x11, 0x0b}; ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ for (i = 0; i < 10; i++) { v = max[i]; v += (sd->brightness - BRIGHTNESS_MAX) * 150 / BRIGHTNESS_MAX; /* 200 ? */ v -= delta[i] * sd->contrast / CONTRAST_MAX; if (v < 0) v = 0; else if (v > 0xff) v = 0xff; if (0 <= ret) ret = reg_w(gspca_dev, 0xa2 + i, v); } if (0 <= ret) ret = reg_w(gspca_dev, 0xdc, 0x01); return ret; } /* This function is used by pac7302 only */ static int setcolors(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int i, v; int ret; static const int a[9] = {217, -212, 0, -101, 170, -67, -38, -315, 355}; static const int b[9] = {19, 106, 0, 19, 106, 1, 19, 106, 1}; ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ if (0 <= ret) ret = reg_w(gspca_dev, 0x11, 0x01); if (0 <= ret) ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ for (i = 0; i < 9; i++) { v = a[i] * sd->colors / COLOR_MAX + b[i]; if (0 <= ret) ret = reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07); if (0 <= ret) ret = reg_w(gspca_dev, 0x0f + 2 * i + 1, v); } if (0 <= ret) ret = reg_w(gspca_dev, 0xdc, 0x01); PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors); return ret; } static int setgain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret; ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ if (0 <= ret) ret = reg_w(gspca_dev, 0x10, sd->gain >> 3); /* load registers to sensor (Bit 0, auto clear) */ if (0 <= ret) ret = reg_w(gspca_dev, 0x11, 0x01); return ret; } static int setexposure(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret; __u8 reg; /* register 2 of frame 3/4 contains the clock divider configuring the no fps according to the formula: 60 / reg. sd->exposure is the desired exposure time in ms. */ reg = 120 * sd->exposure / 1000; if (reg < 2) reg = 2; else if (reg > 63) reg = 63; /* On the pac7302 reg2 MUST be a multiple of 3, so round it to the nearest multiple of 3, except when between 6 and 12? */ if (reg < 6 || reg > 12) reg = ((reg + 1) / 3) * 3; ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ if (0 <= ret) ret = reg_w(gspca_dev, 0x02, reg); /* load registers to sensor (Bit 0, auto clear) */ if (0 <= ret) ret = reg_w(gspca_dev, 0x11, 0x01); return ret; } static int sethvflip(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret; __u8 data; ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ data = (sd->hflip ? 0x08 : 0x00) | (sd->vflip ? 0x04 : 0x00); if (0 <= ret) ret = reg_w(gspca_dev, 0x21, data); /* load registers to sensor (Bit 0, auto clear) */ if (0 <= ret) ret = reg_w(gspca_dev, 0x11, 0x01); return ret; } /* this function is called at probe and resume time for pac7302 */ static int sd_init(struct gspca_dev *gspca_dev) { return reg_w_seq(gspca_dev, init_7302, sizeof(init_7302)/2); } static int sd_start(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int ret = 0; sd->sof_read = 0; ret = reg_w_var(gspca_dev, start_7302, page3_7302, sizeof(page3_7302), NULL, 0); if (0 <= ret) ret = setbrightcont(gspca_dev); if (0 <= ret) ret = setcolors(gspca_dev); if (0 <= ret) setgain(gspca_dev); if (0 <= ret) setexposure(gspca_dev); if (0 <= ret) sethvflip(gspca_dev); /* only resolution 640x480 is supported for pac7302 */ sd->sof_read = 0; sd->autogain_ignore_frames = 0; atomic_set(&sd->avg_lum, -1); /* start stream */ if (0 <= ret) ret = reg_w(gspca_dev, 0xff, 0x01); if (0 <= ret) ret = reg_w(gspca_dev, 0x78, 0x01); return ret; } static void sd_stopN(struct gspca_dev *gspca_dev) { int ret; /* stop stream */ ret = reg_w(gspca_dev, 0xff, 0x01); if (0 <= ret) ret = reg_w(gspca_dev, 0x78, 0x00); } /* called on streamoff with alt 0 and on disconnect for pac7302 */ static void sd_stop0(struct gspca_dev *gspca_dev) { int ret; if (!gspca_dev->present) return; ret = reg_w(gspca_dev, 0xff, 0x01); if (0 <= ret) ret = reg_w(gspca_dev, 0x78, 0x40); } /* Include pac common sof detection functions */ #include "pac_common.h" static void do_autogain(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; int avg_lum = atomic_read(&sd->avg_lum); int desired_lum, deadzone; if (avg_lum == -1) return; desired_lum = 270 + sd->brightness * 4; /* Hack hack, with the 7202 the first exposure step is pretty large, so if we're about to make the first exposure increase make the deadzone large to avoid oscilating */ if (desired_lum > avg_lum && sd->gain == GAIN_DEF && sd->exposure > EXPOSURE_DEF && sd->exposure < 42) deadzone = 90; else deadzone = 30; if (sd->autogain_ignore_frames > 0) sd->autogain_ignore_frames--; else if (gspca_auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum, deadzone, GAIN_KNEE, EXPOSURE_KNEE)) sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES; } /* JPEG header, part 1 */ static const unsigned char pac_jpeg_header1[] = { 0xff, 0xd8, /* SOI: Start of Image */ 0xff, 0xc0, /* SOF0: Start of Frame (Baseline DCT) */ 0x00, 0x11, /* length = 17 bytes (including this length field) */ 0x08 /* Precision: 8 */ /* 2 bytes is placed here: number of image lines */ /* 2 bytes is placed here: samples per line */ }; /* JPEG header, continued */ static const unsigned char pac_jpeg_header2[] = { 0x03, /* Number of image components: 3 */ 0x01, 0x21, 0x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */ 0x02, 0x11, 0x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */ 0x03, 0x11, 0x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */ 0xff, 0xda, /* SOS: Start Of Scan */ 0x00, 0x0c, /* length = 12 bytes (including this length field) */ 0x03, /* number of components: 3 */ 0x01, 0x00, /* selector 1, table 0x00 */ 0x02, 0x11, /* selector 2, table 0x11 */ 0x03, 0x11, /* selector 3, table 0x11 */ 0x00, 0x3f, /* Spectral selection: 0 .. 63 */ 0x00 /* Successive approximation: 0 */ }; static void pac_start_frame(struct gspca_dev *gspca_dev, struct gspca_frame *frame, __u16 lines, __u16 samples_per_line) { unsigned char tmpbuf[4]; gspca_frame_add(gspca_dev, FIRST_PACKET, frame, pac_jpeg_header1, sizeof(pac_jpeg_header1)); tmpbuf[0] = lines >> 8; tmpbuf[1] = lines & 0xff; tmpbuf[2] = samples_per_line >> 8; tmpbuf[3] = samples_per_line & 0xff; gspca_frame_add(gspca_dev, INTER_PACKET, frame, tmpbuf, sizeof(tmpbuf)); gspca_frame_add(gspca_dev, INTER_PACKET, frame, pac_jpeg_header2, sizeof(pac_jpeg_header2)); } /* this function is run at interrupt level */ 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; unsigned char *sof; sof = pac_find_sof(&sd->sof_read, data, len); if (sof) { int n, lum_offset, footer_length; /* 6 bytes after the FF D9 EOF marker a number of lumination bytes are send corresponding to different parts of the image, the 14th and 15th byte after the EOF seem to correspond to the center of the image */ lum_offset = 61 + sizeof pac_sof_marker; footer_length = 74; /* Finish decoding current frame */ n = (sof - data) - (footer_length + sizeof pac_sof_marker); if (n < 0) { frame->data_end += n; n = 0; } frame = gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, n); if (gspca_dev->last_packet_type != DISCARD_PACKET && frame->data_end[-2] == 0xff && frame->data_end[-1] == 0xd9) frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, NULL, 0); n = sof - data; len -= n; data = sof; /* Get average lumination */ if (gspca_dev->last_packet_type == LAST_PACKET && n >= lum_offset) atomic_set(&sd->avg_lum, data[-lum_offset] + data[-lum_offset + 1]); else atomic_set(&sd->avg_lum, -1); /* Start the new frame with the jpeg header */ /* The PAC7302 has the image rotated 90 degrees */ pac_start_frame(gspca_dev, frame, gspca_dev->width, gspca_dev->height); } gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len); } 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) setbrightcont(gspca_dev); return 0; } static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->brightness; return 0; } 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) { setbrightcont(gspca_dev); } return 0; } static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->contrast; return 0; } static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->colors = val; if (gspca_dev->streaming) setcolors(gspca_dev); return 0; } static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->colors; return 0; } 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; } 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; } static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->autogain = val; /* when switching to autogain set defaults to make sure we are on a valid point of the autogain gain / exposure knee graph, and give this change time to take effect before doing autogain. */ if (sd->autogain) { sd->exposure = EXPOSURE_DEF; sd->gain = GAIN_DEF; if (gspca_dev->streaming) { sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES; setexposure(gspca_dev); setgain(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; } static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->hflip = val; if (gspca_dev->streaming) sethvflip(gspca_dev); return 0; } static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->hflip; return 0; } static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val) { struct sd *sd = (struct sd *) gspca_dev; sd->vflip = val; if (gspca_dev->streaming) sethvflip(gspca_dev); return 0; } static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val) { struct sd *sd = (struct sd *) gspca_dev; *val = sd->vflip; return 0; } /* sub-driver description for pac7302 */ static struct sd_desc sd_desc = { .name = MODULE_NAME, .ctrls = sd_ctrls, .nctrls = ARRAY_SIZE(sd_ctrls), .config = sd_config, .init = sd_init, .start = sd_start, .stopN = sd_stopN, .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, .dq_callback = do_autogain, }; /* -- module initialisation -- */ static __devinitdata struct usb_device_id device_table[] = { {USB_DEVICE(0x06f8, 0x3009)}, {USB_DEVICE(0x093a, 0x2620)}, {USB_DEVICE(0x093a, 0x2621)}, {USB_DEVICE(0x093a, 0x2622)}, {USB_DEVICE(0x093a, 0x2624)}, {USB_DEVICE(0x093a, 0x2626)}, {USB_DEVICE(0x093a, 0x2628)}, {USB_DEVICE(0x093a, 0x2629)}, {USB_DEVICE(0x093a, 0x262a)}, {USB_DEVICE(0x093a, 0x262c)}, {} }; 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, 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) { int ret; ret = usb_register(&sd_driver); if (ret < 0) return ret; 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);