diff options
Diffstat (limited to 'drivers/media/video/gspca/pac7302.c')
| -rw-r--r-- | drivers/media/video/gspca/pac7302.c | 962 |
1 files changed, 962 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/pac7302.c b/drivers/media/video/gspca/pac7302.c new file mode 100644 index 000000000000..228b414709f7 --- /dev/null +++ b/drivers/media/video/gspca/pac7302.c @@ -0,0 +1,962 @@ +/* + * Pixart PAC7302 library + * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li + * + * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> + * + * Separated from Pixart PAC7311 library by Márton Németh <nm127@freemail.hu> + * + * 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 void reg_w_buf(struct gspca_dev *gspca_dev, + __u8 index, + const char *buffer, int len) +{ + memcpy(gspca_dev->usb_buf, buffer, len); + 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); +} + + +static void reg_w(struct gspca_dev *gspca_dev, + __u8 index, + __u8 value) +{ + gspca_dev->usb_buf[0] = value; + 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); +} + +static void reg_w_seq(struct gspca_dev *gspca_dev, + const __u8 *seq, int len) +{ + while (--len >= 0) { + reg_w(gspca_dev, seq[0], seq[1]); + seq += 2; + } +} + +/* load the beginning of a page */ +static void reg_w_page(struct gspca_dev *gspca_dev, + const __u8 *page, int len) +{ + int index; + + for (index = 0; index < len; index++) { + if (page[index] == SKIP) /* skip this index */ + continue; + gspca_dev->usb_buf[0] = page[index]; + 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); + } +} + +/* output a variable sequence */ +static void 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; + + for (;;) { + index = *seq++; + len = *seq++; + switch (len) { + case END_OF_SEQUENCE: + return; + case LOAD_PAGE4: + reg_w_page(gspca_dev, page4, page4_len); + break; + case LOAD_PAGE3: + reg_w_page(gspca_dev, page3, page3_len); + break; + default: + if (len > USB_BUF_SZ) { + PDEBUG(D_ERR|D_STREAM, + "Incorrect variable sequence"); + return; + } + while (len > 0) { + if (len < 8) { + reg_w_buf(gspca_dev, index, seq, len); + seq += len; + break; + } + reg_w_buf(gspca_dev, index, seq, 8); + seq += 8; + index += 8; + len -= 8; + } + } + } + /* 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 void setbrightcont(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + int i, v; + 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}; + + 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; + reg_w(gspca_dev, 0xa2 + i, v); + } + reg_w(gspca_dev, 0xdc, 0x01); +} + +/* This function is used by pac7302 only */ +static void setcolors(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + int i, v; + 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}; + + reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ + reg_w(gspca_dev, 0x11, 0x01); + reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ + for (i = 0; i < 9; i++) { + v = a[i] * sd->colors / COLOR_MAX + b[i]; + reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07); + reg_w(gspca_dev, 0x0f + 2 * i + 1, v); + } + reg_w(gspca_dev, 0xdc, 0x01); + PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors); +} + +static void setgain(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + + reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ + reg_w(gspca_dev, 0x10, sd->gain >> 3); + + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); +} + +static void setexposure(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + __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; + reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ + reg_w(gspca_dev, 0x02, reg); + + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); +} + +static void sethvflip(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + __u8 data; + + reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ + data = (sd->hflip ? 0x08 : 0x00) | (sd->vflip ? 0x04 : 0x00); + reg_w(gspca_dev, 0x21, data); + /* load registers to sensor (Bit 0, auto clear) */ + reg_w(gspca_dev, 0x11, 0x01); +} + +/* this function is called at probe and resume time for pac7302 */ +static int sd_init(struct gspca_dev *gspca_dev) +{ + reg_w_seq(gspca_dev, init_7302, sizeof init_7302); + + return 0; +} + +static int sd_start(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + + sd->sof_read = 0; + + reg_w_var(gspca_dev, start_7302, + page3_7302, sizeof(page3_7302), + NULL, 0); + setbrightcont(gspca_dev); + setcolors(gspca_dev); + setgain(gspca_dev); + setexposure(gspca_dev); + 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 */ + reg_w(gspca_dev, 0xff, 0x01); + reg_w(gspca_dev, 0x78, 0x01); + + return 0; +} + +static void sd_stopN(struct gspca_dev *gspca_dev) +{ + reg_w(gspca_dev, 0xff, 0x01); + reg_w(gspca_dev, 0x78, 0x00); + 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) +{ + if (!gspca_dev->present) + return; + reg_w(gspca_dev, 0xff, 0x01); + 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); |