| /* |
| * Pixart PAC7302 driver |
| * |
| * Copyright (C) 2008-2012 Jean-Francois Moine <http://moinejf.free.fr> |
| * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li |
| * |
| * Separated from Pixart PAC7311 library by Márton Németh |
| * Camera button input handling by Márton Németh <nm127@freemail.hu> |
| * Copyright (C) 2009-2010 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. |
| * |
| * Register page 1: |
| * |
| * Address Description |
| * 0x78 Global control, bit 6 controls the LED (inverted) |
| * 0x80 Compression balance, 2 interesting settings: |
| * 0x0f Default |
| * 0x50 Values >= this switch the camera to a lower compression, |
| * using the same table for both luminance and chrominance. |
| * This gives a sharper picture. Only usable when running |
| * at < 15 fps! Note currently the driver does not use this |
| * as the quality gain is small and the generated JPG-s are |
| * only understood by v4l-utils >= 0.8.9 |
| * |
| * Register page 3: |
| * |
| * Address Description |
| * 0x02 Clock divider 3-63, fps = 90 / val. Must be a multiple of 3 on |
| * the 7302, so one of 3, 6, 9, ..., except when between 6 and 12? |
| * 0x03 Variable framerate ctrl reg2==3: 0 -> ~30 fps, 255 -> ~22fps |
| * 0x04 Another var framerate ctrl reg2==3, reg3==0: 0 -> ~30 fps, |
| * 63 -> ~27 fps, the 2 msb's must always be 1 !! |
| * 0x05 Another var framerate ctrl reg2==3, reg3==0, reg4==0xc0: |
| * 1 -> ~30 fps, 2 -> ~20 fps |
| * 0x0e Exposure bits 0-7, 0-448, 0 = use full frame time |
| * 0x0f Exposure bit 8, 0-448, 448 = no exposure at all |
| * 0x10 Gain 0-31 |
| * 0x12 Another gain 0-31, unlike 0x10 this one seems to start with an |
| * amplification value of 1 rather then 0 at its lowest setting |
| * 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused |
| * 0x80 Another framerate control, best left at 1, moving it from 1 to |
| * 2 causes the framerate to become 3/4th of what it was, and |
| * also seems to cause pixel averaging, resulting in an effective |
| * resolution of 320x240 and thus a much blockier image |
| * |
| * The registers are accessed in the following functions: |
| * |
| * Page | Register | Function |
| * -----+------------+--------------------------------------------------- |
| * 0 | 0x0f..0x20 | setcolors() |
| * 0 | 0xa2..0xab | setbrightcont() |
| * 0 | 0xc5 | setredbalance() |
| * 0 | 0xc6 | setwhitebalance() |
| * 0 | 0xc7 | setbluebalance() |
| * 0 | 0xdc | setbrightcont(), setcolors() |
| * 3 | 0x02 | setexposure() |
| * 3 | 0x10, 0x12 | setgain() |
| * 3 | 0x11 | setcolors(), setgain(), setexposure(), sethvflip() |
| * 3 | 0x21 | sethvflip() |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/input.h> |
| #include <media/v4l2-chip-ident.h> |
| #include "gspca.h" |
| /* Include pac common sof detection functions */ |
| #include "pac_common.h" |
| |
| MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>, " |
| "Thomas Kaiser thomas@kaiser-linux.li"); |
| MODULE_DESCRIPTION("Pixart PAC7302"); |
| MODULE_LICENSE("GPL"); |
| |
| enum e_ctrl { |
| BRIGHTNESS, |
| CONTRAST, |
| COLORS, |
| WHITE_BALANCE, |
| RED_BALANCE, |
| BLUE_BALANCE, |
| GAIN, |
| AUTOGAIN, |
| EXPOSURE, |
| VFLIP, |
| HFLIP, |
| NCTRLS /* number of controls */ |
| }; |
| |
| struct sd { |
| struct gspca_dev gspca_dev; /* !! must be the first item */ |
| |
| struct gspca_ctrl ctrls[NCTRLS]; |
| |
| u8 flags; |
| #define FL_HFLIP 0x01 /* mirrored by default */ |
| #define FL_VFLIP 0x02 /* vertical flipped by default */ |
| |
| u8 sof_read; |
| s8 autogain_ignore_frames; |
| |
| atomic_t avg_lum; |
| }; |
| |
| /* V4L2 controls supported by the driver */ |
| static void setbrightcont(struct gspca_dev *gspca_dev); |
| static void setcolors(struct gspca_dev *gspca_dev); |
| static void setwhitebalance(struct gspca_dev *gspca_dev); |
| static void setredbalance(struct gspca_dev *gspca_dev); |
| static void setbluebalance(struct gspca_dev *gspca_dev); |
| static void setgain(struct gspca_dev *gspca_dev); |
| static void setexposure(struct gspca_dev *gspca_dev); |
| static void setautogain(struct gspca_dev *gspca_dev); |
| static void sethvflip(struct gspca_dev *gspca_dev); |
| |
| static const struct ctrl sd_ctrls[] = { |
| [BRIGHTNESS] = { |
| { |
| .id = V4L2_CID_BRIGHTNESS, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Brightness", |
| .minimum = 0, |
| #define BRIGHTNESS_MAX 0x20 |
| .maximum = BRIGHTNESS_MAX, |
| .step = 1, |
| .default_value = 0x10, |
| }, |
| .set_control = setbrightcont |
| }, |
| [CONTRAST] = { |
| { |
| .id = V4L2_CID_CONTRAST, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Contrast", |
| .minimum = 0, |
| #define CONTRAST_MAX 255 |
| .maximum = CONTRAST_MAX, |
| .step = 1, |
| .default_value = 127, |
| }, |
| .set_control = setbrightcont |
| }, |
| [COLORS] = { |
| { |
| .id = V4L2_CID_SATURATION, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Saturation", |
| .minimum = 0, |
| #define COLOR_MAX 255 |
| .maximum = COLOR_MAX, |
| .step = 1, |
| .default_value = 127 |
| }, |
| .set_control = setcolors |
| }, |
| [WHITE_BALANCE] = { |
| { |
| .id = V4L2_CID_WHITE_BALANCE_TEMPERATURE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "White Balance", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| .default_value = 4, |
| }, |
| .set_control = setwhitebalance |
| }, |
| [RED_BALANCE] = { |
| { |
| .id = V4L2_CID_RED_BALANCE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Red", |
| .minimum = 0, |
| .maximum = 3, |
| .step = 1, |
| .default_value = 1, |
| }, |
| .set_control = setredbalance |
| }, |
| [BLUE_BALANCE] = { |
| { |
| .id = V4L2_CID_BLUE_BALANCE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Blue", |
| .minimum = 0, |
| .maximum = 3, |
| .step = 1, |
| .default_value = 1, |
| }, |
| .set_control = setbluebalance |
| }, |
| [GAIN] = { |
| { |
| .id = V4L2_CID_GAIN, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Gain", |
| .minimum = 0, |
| .maximum = 62, |
| .step = 1, |
| #define GAIN_DEF 15 |
| #define GAIN_KNEE 46 |
| .default_value = GAIN_DEF, |
| }, |
| .set_control = setgain |
| }, |
| [EXPOSURE] = { |
| { |
| .id = V4L2_CID_EXPOSURE, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Exposure", |
| .minimum = 0, |
| .maximum = 1023, |
| .step = 1, |
| #define EXPOSURE_DEF 66 /* 33 ms / 30 fps */ |
| #define EXPOSURE_KNEE 133 /* 66 ms / 15 fps */ |
| .default_value = EXPOSURE_DEF, |
| }, |
| .set_control = setexposure |
| }, |
| [AUTOGAIN] = { |
| { |
| .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_control = setautogain, |
| }, |
| [HFLIP] = { |
| { |
| .id = V4L2_CID_HFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Mirror", |
| .minimum = 0, |
| .maximum = 1, |
| .step = 1, |
| .default_value = 0, |
| }, |
| .set_control = sethvflip, |
| }, |
| [VFLIP] = { |
| { |
| .id = V4L2_CID_VFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Vflip", |
| .minimum = 0, |
| .maximum = 1, |
| .step = 1, |
| .default_value = 0, |
| }, |
| .set_control = sethvflip |
| }, |
| }; |
| |
| 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, |
| }, |
| }; |
| |
| #define LOAD_PAGE3 255 |
| #define END_OF_SEQUENCE 0 |
| |
| 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, 0x00, 0xc0, 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, |
| SKIP, 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 u8 *buffer, int len) |
| { |
| int ret; |
| |
| if (gspca_dev->usb_err < 0) |
| return; |
| memcpy(gspca_dev->usb_buf, buffer, len); |
| 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, /* value */ |
| index, gspca_dev->usb_buf, len, |
| 500); |
| if (ret < 0) { |
| pr_err("reg_w_buf failed i: %02x error %d\n", |
| index, ret); |
| gspca_dev->usb_err = ret; |
| } |
| } |
| |
| |
| static void reg_w(struct gspca_dev *gspca_dev, |
| u8 index, |
| u8 value) |
| { |
| int ret; |
| |
| if (gspca_dev->usb_err < 0) |
| return; |
| 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) { |
| pr_err("reg_w() failed i: %02x v: %02x error %d\n", |
| index, value, ret); |
| gspca_dev->usb_err = ret; |
| } |
| } |
| |
| 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; |
| int ret = 0; |
| |
| if (gspca_dev->usb_err < 0) |
| return; |
| 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) { |
| pr_err("reg_w_page() failed i: %02x v: %02x error %d\n", |
| index, page[index], ret); |
| gspca_dev->usb_err = ret; |
| break; |
| } |
| } |
| } |
| |
| /* output a variable sequence */ |
| static void reg_w_var(struct gspca_dev *gspca_dev, |
| const u8 *seq, |
| const u8 *page3, unsigned int page3_len) |
| { |
| int index, len; |
| |
| for (;;) { |
| index = *seq++; |
| len = *seq++; |
| switch (len) { |
| case END_OF_SEQUENCE: |
| return; |
| case LOAD_PAGE3: |
| reg_w_page(gspca_dev, page3, page3_len); |
| break; |
| default: |
| #ifdef GSPCA_DEBUG |
| if (len > USB_BUF_SZ) { |
| PDEBUG(D_ERR|D_STREAM, |
| "Incorrect variable sequence"); |
| return; |
| } |
| #endif |
| 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; |
| |
| cam->cam_mode = vga_mode; /* only 640x480 */ |
| cam->nmodes = ARRAY_SIZE(vga_mode); |
| |
| gspca_dev->cam.ctrls = sd->ctrls; |
| |
| sd->flags = id->driver_info; |
| return 0; |
| } |
| |
| 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->ctrls[BRIGHTNESS].val - BRIGHTNESS_MAX) |
| * 150 / BRIGHTNESS_MAX; /* 200 ? */ |
| v -= delta[i] * sd->ctrls[CONTRAST].val / 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); |
| } |
| |
| 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->ctrls[COLORS].val / 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); |
| } |
| |
| static void setwhitebalance(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ |
| reg_w(gspca_dev, 0xc6, sd->ctrls[WHITE_BALANCE].val); |
| |
| reg_w(gspca_dev, 0xdc, 0x01); |
| } |
| |
| static void setredbalance(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ |
| reg_w(gspca_dev, 0xc5, sd->ctrls[RED_BALANCE].val); |
| |
| reg_w(gspca_dev, 0xdc, 0x01); |
| } |
| |
| static void setbluebalance(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ |
| reg_w(gspca_dev, 0xc7, sd->ctrls[BLUE_BALANCE].val); |
| |
| reg_w(gspca_dev, 0xdc, 0x01); |
| } |
| |
| static void setgain(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 reg10, reg12; |
| |
| if (sd->ctrls[GAIN].val < 32) { |
| reg10 = sd->ctrls[GAIN].val; |
| reg12 = 0; |
| } else { |
| reg10 = 31; |
| reg12 = sd->ctrls[GAIN].val - 31; |
| } |
| |
| reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ |
| reg_w(gspca_dev, 0x10, reg10); |
| reg_w(gspca_dev, 0x12, reg12); |
| |
| /* 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 clockdiv; |
| u16 exposure; |
| |
| /* |
| * Register 2 of frame 3 contains the clock divider configuring the |
| * no fps according to the formula: 90 / reg. sd->exposure is the |
| * desired exposure time in 0.5 ms. |
| */ |
| clockdiv = (90 * sd->ctrls[EXPOSURE].val + 1999) / 2000; |
| |
| /* |
| * Note clockdiv = 3 also works, but when running at 30 fps, depending |
| * on the scene being recorded, the camera switches to another |
| * quantization table for certain JPEG blocks, and we don't know how |
| * to decompress these blocks. So we cap the framerate at 15 fps. |
| */ |
| if (clockdiv < 6) |
| clockdiv = 6; |
| else if (clockdiv > 63) |
| clockdiv = 63; |
| |
| /* |
| * Register 2 MUST be a multiple of 3, except when between 6 and 12? |
| * Always round up, otherwise we cannot get the desired frametime |
| * using the partial frame time exposure control. |
| */ |
| if (clockdiv < 6 || clockdiv > 12) |
| clockdiv = ((clockdiv + 2) / 3) * 3; |
| |
| /* |
| * frame exposure time in ms = 1000 * clockdiv / 90 -> |
| * exposure = (sd->exposure / 2) * 448 / (1000 * clockdiv / 90) |
| */ |
| exposure = (sd->ctrls[EXPOSURE].val * 45 * 448) / (1000 * clockdiv); |
| /* 0 = use full frametime, 448 = no exposure, reverse it */ |
| exposure = 448 - exposure; |
| |
| reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ |
| reg_w(gspca_dev, 0x02, clockdiv); |
| reg_w(gspca_dev, 0x0e, exposure & 0xff); |
| reg_w(gspca_dev, 0x0f, exposure >> 8); |
| |
| /* load registers to sensor (Bit 0, auto clear) */ |
| reg_w(gspca_dev, 0x11, 0x01); |
| } |
| |
| static void setautogain(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| /* |
| * 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->ctrls[AUTOGAIN].val) { |
| sd->ctrls[EXPOSURE].val = EXPOSURE_DEF; |
| sd->ctrls[GAIN].val = GAIN_DEF; |
| sd->autogain_ignore_frames = |
| PAC_AUTOGAIN_IGNORE_FRAMES; |
| } else { |
| sd->autogain_ignore_frames = -1; |
| } |
| setexposure(gspca_dev); |
| setgain(gspca_dev); |
| } |
| |
| static void sethvflip(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 data, hflip, vflip; |
| |
| hflip = sd->ctrls[HFLIP].val; |
| if (sd->flags & FL_HFLIP) |
| hflip = !hflip; |
| vflip = sd->ctrls[VFLIP].val; |
| if (sd->flags & FL_VFLIP) |
| vflip = !vflip; |
| |
| reg_w(gspca_dev, 0xff, 0x03); /* page 3 */ |
| data = (hflip ? 0x08 : 0x00) | (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)/2); |
| return gspca_dev->usb_err; |
| } |
| |
| static int sd_start(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| reg_w_var(gspca_dev, start_7302, |
| page3_7302, sizeof(page3_7302)); |
| setbrightcont(gspca_dev); |
| setcolors(gspca_dev); |
| setwhitebalance(gspca_dev); |
| setredbalance(gspca_dev); |
| setbluebalance(gspca_dev); |
| setautogain(gspca_dev); |
| sethvflip(gspca_dev); |
| |
| sd->sof_read = 0; |
| atomic_set(&sd->avg_lum, 270 + sd->ctrls[BRIGHTNESS].val); |
| |
| /* start stream */ |
| reg_w(gspca_dev, 0xff, 0x01); |
| reg_w(gspca_dev, 0x78, 0x01); |
| |
| return gspca_dev->usb_err; |
| } |
| |
| static void sd_stopN(struct gspca_dev *gspca_dev) |
| { |
| |
| /* stop stream */ |
| reg_w(gspca_dev, 0xff, 0x01); |
| 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); |
| } |
| |
| #define WANT_REGULAR_AUTOGAIN |
| #include "autogain_functions.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; |
| const int deadzone = 30; |
| |
| if (sd->autogain_ignore_frames < 0) |
| return; |
| |
| if (sd->autogain_ignore_frames > 0) { |
| sd->autogain_ignore_frames--; |
| } else { |
| desired_lum = 270 + sd->ctrls[BRIGHTNESS].val; |
| |
| 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 */ |
| static const u8 jpeg_header[] = { |
| 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 */ |
| 0x02, 0x80, /* height = 640 (image rotated) */ |
| 0x01, 0xe0, /* width = 480 */ |
| 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 */ |
| }; |
| |
| /* this function is run at interrupt level */ |
| static void sd_pkt_scan(struct gspca_dev *gspca_dev, |
| u8 *data, /* isoc packet */ |
| int len) /* iso packet length */ |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 *image; |
| u8 *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) { |
| gspca_dev->image_len += n; |
| n = 0; |
| } else { |
| gspca_frame_add(gspca_dev, INTER_PACKET, data, n); |
| } |
| |
| image = gspca_dev->image; |
| if (image != NULL |
| && image[gspca_dev->image_len - 2] == 0xff |
| && image[gspca_dev->image_len - 1] == 0xd9) |
| gspca_frame_add(gspca_dev, LAST_PACKET, 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]); |
| |
| /* Start the new frame with the jpeg header */ |
| /* The PAC7302 has the image rotated 90 degrees */ |
| gspca_frame_add(gspca_dev, FIRST_PACKET, |
| jpeg_header, sizeof jpeg_header); |
| } |
| gspca_frame_add(gspca_dev, INTER_PACKET, data, len); |
| } |
| |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| static int sd_dbg_s_register(struct gspca_dev *gspca_dev, |
| struct v4l2_dbg_register *reg) |
| { |
| u8 index; |
| u8 value; |
| |
| /* |
| * reg->reg: bit0..15: reserved for register index (wIndex is 16bit |
| * long on the USB bus) |
| */ |
| if (reg->match.type == V4L2_CHIP_MATCH_HOST && |
| reg->match.addr == 0 && |
| (reg->reg < 0x000000ff) && |
| (reg->val <= 0x000000ff) |
| ) { |
| /* Currently writing to page 0 is only supported. */ |
| /* reg_w() only supports 8bit index */ |
| index = reg->reg; |
| value = reg->val; |
| |
| /* |
| * Note that there shall be no access to other page |
| * by any other function between the page switch and |
| * the actual register write. |
| */ |
| reg_w(gspca_dev, 0xff, 0x00); /* page 0 */ |
| reg_w(gspca_dev, index, value); |
| |
| reg_w(gspca_dev, 0xdc, 0x01); |
| } |
| return gspca_dev->usb_err; |
| } |
| |
| static int sd_chip_ident(struct gspca_dev *gspca_dev, |
| struct v4l2_dbg_chip_ident *chip) |
| { |
| int ret = -EINVAL; |
| |
| if (chip->match.type == V4L2_CHIP_MATCH_HOST && |
| chip->match.addr == 0) { |
| chip->revision = 0; |
| chip->ident = V4L2_IDENT_UNKNOWN; |
| ret = 0; |
| } |
| return ret; |
| } |
| #endif |
| |
| #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
| static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, |
| u8 *data, /* interrupt packet data */ |
| int len) /* interrput packet length */ |
| { |
| int ret = -EINVAL; |
| u8 data0, data1; |
| |
| if (len == 2) { |
| data0 = data[0]; |
| data1 = data[1]; |
| if ((data0 == 0x00 && data1 == 0x11) || |
| (data0 == 0x22 && data1 == 0x33) || |
| (data0 == 0x44 && data1 == 0x55) || |
| (data0 == 0x66 && data1 == 0x77) || |
| (data0 == 0x88 && data1 == 0x99) || |
| (data0 == 0xaa && data1 == 0xbb) || |
| (data0 == 0xcc && data1 == 0xdd) || |
| (data0 == 0xee && data1 == 0xff)) { |
| input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1); |
| input_sync(gspca_dev->input_dev); |
| input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0); |
| input_sync(gspca_dev->input_dev); |
| ret = 0; |
| } |
| } |
| |
| return ret; |
| } |
| #endif |
| |
| /* sub-driver description for pac7302 */ |
| static const struct sd_desc sd_desc = { |
| .name = KBUILD_MODNAME, |
| .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, |
| #ifdef CONFIG_VIDEO_ADV_DEBUG |
| .set_register = sd_dbg_s_register, |
| .get_chip_ident = sd_chip_ident, |
| #endif |
| #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
| .int_pkt_scan = sd_int_pkt_scan, |
| #endif |
| }; |
| |
| /* -- module initialisation -- */ |
| static const struct usb_device_id device_table[] = { |
| {USB_DEVICE(0x06f8, 0x3009)}, |
| {USB_DEVICE(0x06f8, 0x301b)}, |
| {USB_DEVICE(0x093a, 0x2620)}, |
| {USB_DEVICE(0x093a, 0x2621)}, |
| {USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP}, |
| {USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP}, |
| {USB_DEVICE(0x093a, 0x2625)}, |
| {USB_DEVICE(0x093a, 0x2626)}, |
| {USB_DEVICE(0x093a, 0x2627), .driver_info = FL_VFLIP}, |
| {USB_DEVICE(0x093a, 0x2628)}, |
| {USB_DEVICE(0x093a, 0x2629), .driver_info = FL_VFLIP}, |
| {USB_DEVICE(0x093a, 0x262a)}, |
| {USB_DEVICE(0x093a, 0x262c)}, |
| {USB_DEVICE(0x145f, 0x013c)}, |
| {} |
| }; |
| 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 = KBUILD_MODNAME, |
| .id_table = device_table, |
| .probe = sd_probe, |
| .disconnect = gspca_disconnect, |
| #ifdef CONFIG_PM |
| .suspend = gspca_suspend, |
| .resume = gspca_resume, |
| #endif |
| }; |
| |
| module_usb_driver(sd_driver); |
