582 lines
15 KiB
C
582 lines
15 KiB
C
/*
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* Pixart PAC207BCA library
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*
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* Copyright (C) 2008 Hans de Goede <hdgoede@redhat.com>
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* Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
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* Copyleft (C) 2005 Michel Xhaard mxhaard@magic.fr
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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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* (at your option) 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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*/
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#define MODULE_NAME "pac207"
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#include "gspca.h"
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MODULE_AUTHOR("Hans de Goede <hdgoede@redhat.com>");
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MODULE_DESCRIPTION("Pixart PAC207");
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MODULE_LICENSE("GPL");
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#define PAC207_CTRL_TIMEOUT 100 /* ms */
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#define PAC207_BRIGHTNESS_MIN 0
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#define PAC207_BRIGHTNESS_MAX 255
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#define PAC207_BRIGHTNESS_DEFAULT 4 /* power on default: 4 */
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/* An exposure value of 4 also works (3 does not) but then we need to lower
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the compression balance setting when in 352x288 mode, otherwise the usb
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bandwidth is not enough and packets get dropped resulting in corrupt
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frames. The problem with this is that when the compression balance gets
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lowered below 0x80, the pac207 starts using a different compression
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algorithm for some lines, these lines get prefixed with a 0x2dd2 prefix
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and currently we do not know how to decompress these lines, so for now
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we use a minimum exposure value of 5 */
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#define PAC207_EXPOSURE_MIN 5
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#define PAC207_EXPOSURE_MAX 26
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#define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 ?? */
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#define PAC207_EXPOSURE_KNEE 11 /* 4 = 30 fps, 11 = 8, 15 = 6 */
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#define PAC207_GAIN_MIN 0
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#define PAC207_GAIN_MAX 31
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#define PAC207_GAIN_DEFAULT 9 /* power on default: 9 */
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#define PAC207_GAIN_KNEE 20
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#define PAC207_AUTOGAIN_DEADZONE 30
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/* specific webcam descriptor */
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struct sd {
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struct gspca_dev gspca_dev; /* !! must be the first item */
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u8 mode;
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u8 brightness;
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u8 exposure;
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u8 autogain;
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u8 gain;
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u8 sof_read;
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u8 header_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_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getbrightness(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 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_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 struct ctrl sd_ctrls[] = {
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#define SD_BRIGHTNESS 0
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{
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{
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.id = V4L2_CID_BRIGHTNESS,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Brightness",
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.minimum = PAC207_BRIGHTNESS_MIN,
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.maximum = PAC207_BRIGHTNESS_MAX,
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.step = 1,
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.default_value = PAC207_BRIGHTNESS_DEFAULT,
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.flags = 0,
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},
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.set = sd_setbrightness,
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.get = sd_getbrightness,
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},
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#define SD_EXPOSURE 1
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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 = PAC207_EXPOSURE_MIN,
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.maximum = PAC207_EXPOSURE_MAX,
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.step = 1,
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.default_value = PAC207_EXPOSURE_DEFAULT,
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.flags = 0,
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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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#define SD_AUTOGAIN 2
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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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.flags = 0,
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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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#define SD_GAIN 3
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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 = PAC207_GAIN_MIN,
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.maximum = PAC207_GAIN_MAX,
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.step = 1,
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.default_value = PAC207_GAIN_DEFAULT,
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.flags = 0,
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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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static const struct v4l2_pix_format sif_mode[] = {
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{176, 144, V4L2_PIX_FMT_PAC207, V4L2_FIELD_NONE,
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.bytesperline = 176,
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.sizeimage = (176 + 2) * 144,
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/* uncompressed, add 2 bytes / line for line header */
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 1},
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{352, 288, V4L2_PIX_FMT_PAC207, V4L2_FIELD_NONE,
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.bytesperline = 352,
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/* compressed, but only when needed (not compressed
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when the framerate is low) */
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.sizeimage = (352 + 2) * 288,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 0},
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};
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static const __u8 pac207_sensor_init[][8] = {
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{0x10, 0x12, 0x0d, 0x12, 0x0c, 0x01, 0x29, 0xf0},
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{0x00, 0x64, 0x64, 0x64, 0x04, 0x10, 0xf0, 0x30},
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{0x00, 0x00, 0x00, 0x70, 0xa0, 0xf8, 0x00, 0x00},
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{0x00, 0x00, 0x32, 0x00, 0x96, 0x00, 0xa2, 0x02},
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{0x32, 0x00, 0x96, 0x00, 0xA2, 0x02, 0xaf, 0x00},
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};
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/* 48 reg_72 Rate Control end BalSize_4a =0x36 */
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static const __u8 PacReg72[] = { 0x00, 0x00, 0x36, 0x00 };
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static int pac207_write_regs(struct gspca_dev *gspca_dev, u16 index,
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const u8 *buffer, u16 length)
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{
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struct usb_device *udev = gspca_dev->dev;
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int err;
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memcpy(gspca_dev->usb_buf, buffer, length);
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
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0x00, index,
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gspca_dev->usb_buf, length, PAC207_CTRL_TIMEOUT);
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if (err < 0)
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PDEBUG(D_ERR,
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"Failed to write registers to index 0x%04X, error %d)",
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index, err);
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return err;
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}
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static int pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value)
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{
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struct usb_device *udev = gspca_dev->dev;
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int err;
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
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value, index, NULL, 0, PAC207_CTRL_TIMEOUT);
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if (err)
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PDEBUG(D_ERR, "Failed to write a register (index 0x%04X,"
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" value 0x%02X, error %d)", index, value, err);
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return err;
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}
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static int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index)
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{
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struct usb_device *udev = gspca_dev->dev;
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int res;
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res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
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0x00, index,
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gspca_dev->usb_buf, 1, PAC207_CTRL_TIMEOUT);
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if (res < 0) {
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PDEBUG(D_ERR,
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"Failed to read a register (index 0x%04X, error %d)",
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index, res);
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return res;
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}
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return gspca_dev->usb_buf[0];
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}
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/* this function is called at probe time */
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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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u8 idreg[2];
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idreg[0] = pac207_read_reg(gspca_dev, 0x0000);
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idreg[1] = pac207_read_reg(gspca_dev, 0x0001);
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idreg[0] = ((idreg[0] & 0x0F) << 4) | ((idreg[1] & 0xf0) >> 4);
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idreg[1] = idreg[1] & 0x0f;
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PDEBUG(D_PROBE, "Pixart Sensor ID 0x%02X Chips ID 0x%02X",
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idreg[0], idreg[1]);
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if (idreg[0] != 0x27) {
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PDEBUG(D_PROBE, "Error invalid sensor ID!");
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return -ENODEV;
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}
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PDEBUG(D_PROBE,
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"Pixart PAC207BCA Image Processor and Control Chip detected"
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" (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct);
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cam = &gspca_dev->cam;
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cam->cam_mode = sif_mode;
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cam->nmodes = ARRAY_SIZE(sif_mode);
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sd->brightness = PAC207_BRIGHTNESS_DEFAULT;
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sd->exposure = PAC207_EXPOSURE_DEFAULT;
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sd->gain = PAC207_GAIN_DEFAULT;
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sd->autogain = AUTOGAIN_DEF;
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return 0;
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}
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/* this function is called at probe and resume time */
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static int sd_init(struct gspca_dev *gspca_dev)
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{
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pac207_write_reg(gspca_dev, 0x41, 0x00);
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/* Bit_0=Image Format,
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* Bit_1=LED,
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* Bit_2=Compression test mode enable */
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pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
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pac207_write_reg(gspca_dev, 0x11, 0x30); /* Analog Bias */
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return 0;
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}
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/* -- start the camera -- */
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static int sd_start(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 mode;
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pac207_write_reg(gspca_dev, 0x0f, 0x10); /* Power control (Bit 6-0) */
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pac207_write_regs(gspca_dev, 0x0002, pac207_sensor_init[0], 8);
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pac207_write_regs(gspca_dev, 0x000a, pac207_sensor_init[1], 8);
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pac207_write_regs(gspca_dev, 0x0012, pac207_sensor_init[2], 8);
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pac207_write_regs(gspca_dev, 0x0040, pac207_sensor_init[3], 8);
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pac207_write_regs(gspca_dev, 0x0042, pac207_sensor_init[4], 8);
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pac207_write_regs(gspca_dev, 0x0048, PacReg72, 4);
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/* Compression Balance */
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if (gspca_dev->width == 176)
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pac207_write_reg(gspca_dev, 0x4a, 0xff);
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else
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pac207_write_reg(gspca_dev, 0x4a, 0x88);
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pac207_write_reg(gspca_dev, 0x4b, 0x00); /* Sram test value */
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pac207_write_reg(gspca_dev, 0x08, sd->brightness);
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/* PGA global gain (Bit 4-0) */
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pac207_write_reg(gspca_dev, 0x0e, sd->gain);
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pac207_write_reg(gspca_dev, 0x02, sd->exposure); /* PXCK = 12MHz /n */
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mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */
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if (gspca_dev->width == 176) { /* 176x144 */
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mode |= 0x01;
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PDEBUG(D_STREAM, "pac207_start mode 176x144");
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} else { /* 352x288 */
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PDEBUG(D_STREAM, "pac207_start mode 352x288");
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}
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pac207_write_reg(gspca_dev, 0x41, mode);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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msleep(10);
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pac207_write_reg(gspca_dev, 0x40, 0x01); /* Start ISO pipe */
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sd->sof_read = 0;
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sd->autogain_ignore_frames = 0;
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atomic_set(&sd->avg_lum, -1);
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return 0;
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}
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static void sd_stopN(struct gspca_dev *gspca_dev)
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{
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pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */
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pac207_write_reg(gspca_dev, 0x41, 0x00); /* Turn of LED */
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pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
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}
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/* Include pac common sof detection functions */
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#include "pac_common.h"
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static void pac207_do_auto_gain(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 avg_lum = atomic_read(&sd->avg_lum);
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if (avg_lum == -1)
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return;
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if (sd->autogain_ignore_frames > 0)
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sd->autogain_ignore_frames--;
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else if (gspca_auto_gain_n_exposure(gspca_dev, avg_lum,
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100 + sd->brightness / 2, PAC207_AUTOGAIN_DEADZONE,
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PAC207_GAIN_KNEE, PAC207_EXPOSURE_KNEE))
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sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
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}
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static void sd_pkt_scan(struct gspca_dev *gspca_dev,
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struct gspca_frame *frame,
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__u8 *data,
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int len)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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unsigned char *sof;
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sof = pac_find_sof(gspca_dev, data, len);
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if (sof) {
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int n;
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/* finish decoding current frame */
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n = sof - data;
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if (n > sizeof pac_sof_marker)
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n -= sizeof pac_sof_marker;
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else
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n = 0;
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frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
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data, n);
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sd->header_read = 0;
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gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0);
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len -= sof - data;
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data = sof;
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}
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if (sd->header_read < 11) {
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int needed;
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/* get average lumination from frame header (byte 5) */
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if (sd->header_read < 5) {
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needed = 5 - sd->header_read;
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if (len >= needed)
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atomic_set(&sd->avg_lum, data[needed - 1]);
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}
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/* skip the rest of the header */
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needed = 11 - sd->header_read;
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if (len <= needed) {
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sd->header_read += len;
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return;
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}
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data += needed;
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len -= needed;
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sd->header_read = 11;
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}
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gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
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}
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static void setbrightness(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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pac207_write_reg(gspca_dev, 0x08, sd->brightness);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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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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pac207_write_reg(gspca_dev, 0x02, sd->exposure);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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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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pac207_write_reg(gspca_dev, 0x0e, sd->gain);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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}
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static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->brightness = val;
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if (gspca_dev->streaming)
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setbrightness(gspca_dev);
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return 0;
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}
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static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->brightness;
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return 0;
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}
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static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->exposure = val;
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if (gspca_dev->streaming)
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setexposure(gspca_dev);
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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_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_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 = PAC207_EXPOSURE_DEFAULT;
|
|
sd->gain = PAC207_GAIN_DEFAULT;
|
|
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;
|
|
}
|
|
|
|
/* sub-driver description */
|
|
static const 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,
|
|
.dq_callback = pac207_do_auto_gain,
|
|
.pkt_scan = sd_pkt_scan,
|
|
};
|
|
|
|
/* -- module initialisation -- */
|
|
static const __devinitdata struct usb_device_id device_table[] = {
|
|
{USB_DEVICE(0x041e, 0x4028)},
|
|
{USB_DEVICE(0x093a, 0x2460)},
|
|
{USB_DEVICE(0x093a, 0x2461)},
|
|
{USB_DEVICE(0x093a, 0x2463)},
|
|
{USB_DEVICE(0x093a, 0x2464)},
|
|
{USB_DEVICE(0x093a, 0x2468)},
|
|
{USB_DEVICE(0x093a, 0x2470)},
|
|
{USB_DEVICE(0x093a, 0x2471)},
|
|
{USB_DEVICE(0x093a, 0x2472)},
|
|
{USB_DEVICE(0x093a, 0x2476)},
|
|
{USB_DEVICE(0x145f, 0x013a)},
|
|
{USB_DEVICE(0x2001, 0xf115)},
|
|
{}
|
|
};
|
|
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);
|