4f7309e278
The function usb_control_msg() can return error any time so at least warn the user if an error happens. No message is printed in case of normal operation. Signed-off-by: Marton Nemeth <nm127@freemail.hu> Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
848 lines
22 KiB
C
848 lines
22 KiB
C
/*
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* Pixart PAC7311 library
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* Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
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*
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* V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Some documentation about various registers as determined by trial and error.
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When the register addresses differ between the 7202 and the 7311 the 2
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different addresses are written as 7302addr/7311addr, when one of the 2
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addresses is a - sign that register description is not valid for the
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matching IC.
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Register page 1:
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Address Description
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-/0x08 Unknown compressor related, must always be 8 except when not
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in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !
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-/0x1b Auto white balance related, bit 0 is AWB enable (inverted)
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bits 345 seem to toggle per color gains on/off (inverted)
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0x78 Global control, bit 6 controls the LED (inverted)
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-/0x80 JPEG compression ratio ? Best not touched
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Register page 3/4:
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Address Description
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0x02 Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on
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the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
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-/0x0f Master gain 1-245, low value = high gain
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0x10/- Master gain 0-31
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-/0x10 Another gain 0-15, limited influence (1-2x gain I guess)
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0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
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-/0x27 Seems to toggle various gains on / off, Setting bit 7 seems to
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completely disable the analog amplification block. Set to 0x68
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for max gain, 0x14 for minimal gain.
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*/
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#define MODULE_NAME "pac7311"
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#include "gspca.h"
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MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
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MODULE_DESCRIPTION("Pixart PAC7311");
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MODULE_LICENSE("GPL");
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/* specific webcam descriptor for pac7311 */
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struct sd {
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struct gspca_dev gspca_dev; /* !! must be the first item */
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unsigned char contrast;
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unsigned char gain;
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unsigned char exposure;
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unsigned char autogain;
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__u8 hflip;
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__u8 vflip;
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u8 sof_read;
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u8 autogain_ignore_frames;
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atomic_t avg_lum;
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};
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/* V4L2 controls supported by the driver */
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static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
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static struct ctrl sd_ctrls[] = {
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/* This control is for both the 7302 and the 7311 */
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{
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{
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.id = V4L2_CID_CONTRAST,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Contrast",
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.minimum = 0,
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#define CONTRAST_MAX 255
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.maximum = CONTRAST_MAX,
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.step = 1,
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#define CONTRAST_DEF 127
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.default_value = CONTRAST_DEF,
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},
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.set = sd_setcontrast,
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.get = sd_getcontrast,
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},
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/* All controls below are for both the 7302 and the 7311 */
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{
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{
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.id = V4L2_CID_GAIN,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Gain",
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.minimum = 0,
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#define GAIN_MAX 255
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.maximum = GAIN_MAX,
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.step = 1,
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#define GAIN_DEF 127
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#define GAIN_KNEE 255 /* Gain seems to cause little noise on the pac73xx */
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.default_value = GAIN_DEF,
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},
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.set = sd_setgain,
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.get = sd_getgain,
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},
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{
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{
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.id = V4L2_CID_EXPOSURE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Exposure",
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.minimum = 0,
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#define EXPOSURE_MAX 255
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.maximum = EXPOSURE_MAX,
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.step = 1,
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#define EXPOSURE_DEF 16 /* 32 ms / 30 fps */
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#define EXPOSURE_KNEE 50 /* 100 ms / 10 fps */
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.default_value = EXPOSURE_DEF,
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},
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.set = sd_setexposure,
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.get = sd_getexposure,
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},
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{
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{
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.id = V4L2_CID_AUTOGAIN,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Auto Gain",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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#define AUTOGAIN_DEF 1
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.default_value = AUTOGAIN_DEF,
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},
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.set = sd_setautogain,
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.get = sd_getautogain,
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},
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{
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{
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.id = V4L2_CID_HFLIP,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Mirror",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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#define HFLIP_DEF 0
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.default_value = HFLIP_DEF,
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},
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.set = sd_sethflip,
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.get = sd_gethflip,
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},
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{
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{
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.id = V4L2_CID_VFLIP,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Vflip",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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#define VFLIP_DEF 0
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.default_value = VFLIP_DEF,
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},
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.set = sd_setvflip,
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.get = sd_getvflip,
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},
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};
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static const struct v4l2_pix_format vga_mode[] = {
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{160, 120, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
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.bytesperline = 160,
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.sizeimage = 160 * 120 * 3 / 8 + 590,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.priv = 2},
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{320, 240, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
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.bytesperline = 320,
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.sizeimage = 320 * 240 * 3 / 8 + 590,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.priv = 1},
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{640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
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.bytesperline = 640,
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.sizeimage = 640 * 480 * 3 / 8 + 590,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.priv = 0},
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};
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#define LOAD_PAGE3 255
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#define LOAD_PAGE4 254
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#define END_OF_SEQUENCE 0
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/* pac 7311 */
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static const __u8 init_7311[] = {
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0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */
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0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */
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0x78, 0x44, /* Bit_0=start stream, Bit_6=LED */
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0xff, 0x04,
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0x27, 0x80,
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0x28, 0xca,
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0x29, 0x53,
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0x2a, 0x0e,
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0xff, 0x01,
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0x3e, 0x20,
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};
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static const __u8 start_7311[] = {
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/* index, len, [value]* */
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0xff, 1, 0x01, /* page 1 */
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0x02, 43, 0x48, 0x0a, 0x40, 0x08, 0x00, 0x00, 0x08, 0x00,
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0x06, 0xff, 0x11, 0xff, 0x5a, 0x30, 0x90, 0x4c,
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0x00, 0x07, 0x00, 0x0a, 0x10, 0x00, 0xa0, 0x10,
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0x02, 0x00, 0x00, 0x00, 0x00, 0x0b, 0x01, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00,
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0x3e, 42, 0x00, 0x00, 0x78, 0x52, 0x4a, 0x52, 0x78, 0x6e,
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0x48, 0x46, 0x48, 0x6e, 0x5f, 0x49, 0x42, 0x49,
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0x5f, 0x5f, 0x49, 0x42, 0x49, 0x5f, 0x6e, 0x48,
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0x46, 0x48, 0x6e, 0x78, 0x52, 0x4a, 0x52, 0x78,
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0x00, 0x00, 0x09, 0x1b, 0x34, 0x49, 0x5c, 0x9b,
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0xd0, 0xff,
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0x78, 6, 0x44, 0x00, 0xf2, 0x01, 0x01, 0x80,
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0x7f, 18, 0x2a, 0x1c, 0x00, 0xc8, 0x02, 0x58, 0x03, 0x84,
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0x12, 0x00, 0x1a, 0x04, 0x08, 0x0c, 0x10, 0x14,
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0x18, 0x20,
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0x96, 3, 0x01, 0x08, 0x04,
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0xa0, 4, 0x44, 0x44, 0x44, 0x04,
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0xf0, 13, 0x01, 0x00, 0x00, 0x00, 0x22, 0x00, 0x20, 0x00,
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0x3f, 0x00, 0x0a, 0x01, 0x00,
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0xff, 1, 0x04, /* page 4 */
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0, LOAD_PAGE4, /* load the page 4 */
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0x11, 1, 0x01,
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0, END_OF_SEQUENCE /* end of sequence */
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};
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#define SKIP 0xaa
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/* page 4 - the value SKIP says skip the index - see reg_w_page() */
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static const __u8 page4_7311[] = {
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SKIP, SKIP, 0x04, 0x54, 0x07, 0x2b, 0x09, 0x0f,
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0x09, 0x00, SKIP, SKIP, 0x07, 0x00, 0x00, 0x62,
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0x08, SKIP, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x03, 0xa0, 0x01, 0xf4, SKIP,
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SKIP, 0x00, 0x08, SKIP, 0x03, SKIP, 0x00, 0x68,
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0xca, 0x10, 0x06, 0x78, 0x00, 0x00, 0x00, 0x00,
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0x23, 0x28, 0x04, 0x11, 0x00, 0x00
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};
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static void reg_w_buf(struct gspca_dev *gspca_dev,
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__u8 index,
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const char *buffer, int len)
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{
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int ret;
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memcpy(gspca_dev->usb_buf, buffer, len);
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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1, /* request */
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, /* value */
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index, gspca_dev->usb_buf, len,
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500);
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if (ret < 0)
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PDEBUG(D_ERR, "reg_w_buf(): "
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"Failed to write registers to index 0x%x, error %i",
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index, ret);
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}
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static void reg_w(struct gspca_dev *gspca_dev,
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__u8 index,
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__u8 value)
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{
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int ret;
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gspca_dev->usb_buf[0] = value;
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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0, /* request */
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, index, gspca_dev->usb_buf, 1,
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500);
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if (ret < 0)
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PDEBUG(D_ERR, "reg_w(): "
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"Failed to write register to index 0x%x, value 0x%x, error %i",
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index, value, ret);
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}
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static void reg_w_seq(struct gspca_dev *gspca_dev,
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const __u8 *seq, int len)
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{
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while (--len >= 0) {
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reg_w(gspca_dev, seq[0], seq[1]);
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seq += 2;
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}
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}
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/* load the beginning of a page */
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static void reg_w_page(struct gspca_dev *gspca_dev,
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const __u8 *page, int len)
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{
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int index;
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int ret;
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for (index = 0; index < len; index++) {
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if (page[index] == SKIP) /* skip this index */
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continue;
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gspca_dev->usb_buf[0] = page[index];
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ret = usb_control_msg(gspca_dev->dev,
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usb_sndctrlpipe(gspca_dev->dev, 0),
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0, /* request */
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, index, gspca_dev->usb_buf, 1,
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500);
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if (ret < 0)
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PDEBUG(D_ERR, "reg_w_page(): "
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"Failed to write register to index 0x%x, "
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"value 0x%x, error %i",
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index, page[index], ret);
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}
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}
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/* output a variable sequence */
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static void reg_w_var(struct gspca_dev *gspca_dev,
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const __u8 *seq,
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const __u8 *page3, unsigned int page3_len,
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const __u8 *page4, unsigned int page4_len)
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{
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int index, len;
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for (;;) {
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index = *seq++;
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len = *seq++;
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switch (len) {
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case END_OF_SEQUENCE:
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return;
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case LOAD_PAGE4:
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reg_w_page(gspca_dev, page4, page4_len);
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break;
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case LOAD_PAGE3:
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reg_w_page(gspca_dev, page3, page3_len);
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break;
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default:
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if (len > USB_BUF_SZ) {
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PDEBUG(D_ERR|D_STREAM,
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"Incorrect variable sequence");
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return;
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}
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while (len > 0) {
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if (len < 8) {
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reg_w_buf(gspca_dev, index, seq, len);
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seq += len;
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break;
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}
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reg_w_buf(gspca_dev, index, seq, 8);
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seq += 8;
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index += 8;
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len -= 8;
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}
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}
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}
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/* not reached */
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}
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/* this function is called at probe time for pac7311 */
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static int sd_config(struct gspca_dev *gspca_dev,
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const struct usb_device_id *id)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct cam *cam;
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cam = &gspca_dev->cam;
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PDEBUG(D_CONF, "Find Sensor PAC7311");
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cam->cam_mode = vga_mode;
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cam->nmodes = ARRAY_SIZE(vga_mode);
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sd->contrast = CONTRAST_DEF;
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sd->gain = GAIN_DEF;
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sd->exposure = EXPOSURE_DEF;
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sd->autogain = AUTOGAIN_DEF;
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sd->hflip = HFLIP_DEF;
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sd->vflip = VFLIP_DEF;
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return 0;
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}
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/* This function is used by pac7311 only */
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static void setcontrast(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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reg_w(gspca_dev, 0xff, 0x04);
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reg_w(gspca_dev, 0x10, sd->contrast >> 4);
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/* load registers to sensor (Bit 0, auto clear) */
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reg_w(gspca_dev, 0x11, 0x01);
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}
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static void setgain(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int gain = GAIN_MAX - sd->gain;
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if (gain < 1)
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gain = 1;
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else if (gain > 245)
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gain = 245;
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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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reg_w(gspca_dev, 0x0e, 0x00);
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reg_w(gspca_dev, 0x0f, gain);
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/* load registers to sensor (Bit 0, auto clear) */
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reg_w(gspca_dev, 0x11, 0x01);
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}
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static void setexposure(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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__u8 reg;
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/* register 2 of frame 3/4 contains the clock divider configuring the
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no fps according to the formula: 60 / reg. sd->exposure is the
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desired exposure time in ms. */
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reg = 120 * sd->exposure / 1000;
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if (reg < 2)
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reg = 2;
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else if (reg > 63)
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reg = 63;
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reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
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reg_w(gspca_dev, 0x02, reg);
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/* Page 1 register 8 must always be 0x08 except when not in
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640x480 mode and Page3/4 reg 2 <= 3 then it must be 9 */
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reg_w(gspca_dev, 0xff, 0x01);
|
|
if (gspca_dev->cam.cam_mode[(int)gspca_dev->curr_mode].priv &&
|
|
reg <= 3)
|
|
reg_w(gspca_dev, 0x08, 0x09);
|
|
else
|
|
reg_w(gspca_dev, 0x08, 0x08);
|
|
|
|
/* 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, 0x04); /* page 4 */
|
|
data = (sd->hflip ? 0x04 : 0x00) | (sd->vflip ? 0x08 : 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 pac7311 */
|
|
static int sd_init(struct gspca_dev *gspca_dev)
|
|
{
|
|
reg_w_seq(gspca_dev, init_7311, sizeof init_7311);
|
|
|
|
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_7311,
|
|
NULL, 0,
|
|
page4_7311, sizeof(page4_7311));
|
|
setcontrast(gspca_dev);
|
|
setgain(gspca_dev);
|
|
setexposure(gspca_dev);
|
|
sethvflip(gspca_dev);
|
|
|
|
/* set correct resolution */
|
|
switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
|
|
case 2: /* 160x120 pac7311 */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x17, 0x20);
|
|
reg_w(gspca_dev, 0x87, 0x10);
|
|
break;
|
|
case 1: /* 320x240 pac7311 */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x17, 0x30);
|
|
reg_w(gspca_dev, 0x87, 0x11);
|
|
break;
|
|
case 0: /* 640x480 */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x17, 0x00);
|
|
reg_w(gspca_dev, 0x87, 0x12);
|
|
break;
|
|
}
|
|
|
|
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, 0x05);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void sd_stopN(struct gspca_dev *gspca_dev)
|
|
{
|
|
reg_w(gspca_dev, 0xff, 0x04);
|
|
reg_w(gspca_dev, 0x27, 0x80);
|
|
reg_w(gspca_dev, 0x28, 0xca);
|
|
reg_w(gspca_dev, 0x29, 0x53);
|
|
reg_w(gspca_dev, 0x2a, 0x0e);
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x3e, 0x20);
|
|
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
|
|
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
|
|
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
|
|
}
|
|
|
|
/* called on streamoff with alt 0 and on disconnect for 7311 */
|
|
static void sd_stop0(struct gspca_dev *gspca_dev)
|
|
{
|
|
}
|
|
|
|
/* 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 = 200;
|
|
deadzone = 20;
|
|
|
|
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 = 24 + sizeof pac_sof_marker;
|
|
footer_length = 26;
|
|
|
|
/* 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 */
|
|
pac_start_frame(gspca_dev, frame,
|
|
gspca_dev->height, gspca_dev->width);
|
|
}
|
|
gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
|
|
}
|
|
|
|
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;
|
|
|
|
*val = sd->contrast;
|
|
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 pac7311 */
|
|
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(0x093a, 0x2600)},
|
|
{USB_DEVICE(0x093a, 0x2601)},
|
|
{USB_DEVICE(0x093a, 0x2603)},
|
|
{USB_DEVICE(0x093a, 0x2608)},
|
|
{USB_DEVICE(0x093a, 0x260e)},
|
|
{USB_DEVICE(0x093a, 0x260f)},
|
|
{}
|
|
};
|
|
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);
|