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linux/drivers/media/video/gspca/pac7302.c

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/*
* Pixart PAC7302 library
* Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
*
* V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
*
* Separated from Pixart PAC7311 library by Márton Németh <nm127@freemail.hu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Some documentation about various registers as determined by trial and error.
When the register addresses differ between the 7202 and the 7311 the 2
different addresses are written as 7302addr/7311addr, when one of the 2
addresses is a - sign that register description is not valid for the
matching IC.
Register page 1:
Address Description
-/0x08 Unknown compressor related, must always be 8 except when not
in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !
-/0x1b Auto white balance related, bit 0 is AWB enable (inverted)
bits 345 seem to toggle per color gains on/off (inverted)
0x78 Global control, bit 6 controls the LED (inverted)
-/0x80 JPEG compression ratio ? Best not touched
Register page 3/4:
Address Description
0x02 Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on
the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
-/0x0f Master gain 1-245, low value = high gain
0x10/- Master gain 0-31
-/0x10 Another gain 0-15, limited influence (1-2x gain I guess)
0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
-/0x27 Seems to toggle various gains on / off, Setting bit 7 seems to
completely disable the analog amplification block. Set to 0x68
for max gain, 0x14 for minimal gain.
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 | setgain()
3 | 0x11 | setcolors(), setgain(), setexposure(), sethvflip()
3 | 0x21 | sethvflip()
*/
#define MODULE_NAME "pac7302"
#include <media/v4l2-chip-ident.h>
#include "gspca.h"
MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
MODULE_DESCRIPTION("Pixart PAC7302");
MODULE_LICENSE("GPL");
/* specific webcam descriptor for pac7302 */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
unsigned char brightness;
unsigned char contrast;
unsigned char colors;
unsigned char white_balance;
unsigned char red_balance;
unsigned char blue_balance;
unsigned char gain;
unsigned char exposure;
unsigned char autogain;
__u8 hflip;
__u8 vflip;
u8 flags;
#define FL_HFLIP 0x01 /* mirrored by default */
#define FL_VFLIP 0x02 /* vertical flipped by default */
u8 sof_read;
u8 autogain_ignore_frames;
atomic_t avg_lum;
};
/* V4L2 controls supported by the driver */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setwhitebalance(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getwhitebalance(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setredbalance(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getredbalance(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setbluebalance(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbluebalance(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
static struct ctrl sd_ctrls[] = {
/* This control is pac7302 only */
{
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
#define BRIGHTNESS_MAX 0x20
.maximum = BRIGHTNESS_MAX,
.step = 1,
#define BRIGHTNESS_DEF 0x10
.default_value = BRIGHTNESS_DEF,
},
.set = sd_setbrightness,
.get = sd_getbrightness,
},
/* This control is for both the 7302 and the 7311 */
{
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
#define CONTRAST_MAX 255
.maximum = CONTRAST_MAX,
.step = 1,
#define CONTRAST_DEF 127
.default_value = CONTRAST_DEF,
},
.set = sd_setcontrast,
.get = sd_getcontrast,
},
/* This control is pac7302 only */
{
{
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Saturation",
.minimum = 0,
#define COLOR_MAX 255
.maximum = COLOR_MAX,
.step = 1,
#define COLOR_DEF 127
.default_value = COLOR_DEF,
},
.set = sd_setcolors,
.get = sd_getcolors,
},
{
{
.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "White Balance",
.minimum = 0,
.maximum = 255,
.step = 1,
#define WHITEBALANCE_DEF 4
.default_value = WHITEBALANCE_DEF,
},
.set = sd_setwhitebalance,
.get = sd_getwhitebalance,
},
{
{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Red",
.minimum = 0,
.maximum = 3,
.step = 1,
#define REDBALANCE_DEF 1
.default_value = REDBALANCE_DEF,
},
.set = sd_setredbalance,
.get = sd_getredbalance,
},
{
{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Blue",
.minimum = 0,
.maximum = 3,
.step = 1,
#define BLUEBALANCE_DEF 1
.default_value = BLUEBALANCE_DEF,
},
.set = sd_setbluebalance,
.get = sd_getbluebalance,
},
/* All controls below are for both the 7302 and the 7311 */
{
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = 0,
#define GAIN_MAX 255
.maximum = GAIN_MAX,
.step = 1,
#define GAIN_DEF 127
#define GAIN_KNEE 255 /* Gain seems to cause little noise on the pac73xx */
.default_value = GAIN_DEF,
},
.set = sd_setgain,
.get = sd_getgain,
},
{
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
.minimum = 0,
#define EXPOSURE_MAX 255
.maximum = EXPOSURE_MAX,
.step = 1,
#define EXPOSURE_DEF 16 /* 32 ms / 30 fps */
#define EXPOSURE_KNEE 50 /* 100 ms / 10 fps */
.default_value = EXPOSURE_DEF,
},
.set = sd_setexposure,
.get = sd_getexposure,
},
{
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Gain",
.minimum = 0,
.maximum = 1,
.step = 1,
#define AUTOGAIN_DEF 1
.default_value = AUTOGAIN_DEF,
},
.set = sd_setautogain,
.get = sd_getautogain,
},
{
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mirror",
.minimum = 0,
.maximum = 1,
.step = 1,
#define HFLIP_DEF 0
.default_value = HFLIP_DEF,
},
.set = sd_sethflip,
.get = sd_gethflip,
},
{
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Vflip",
.minimum = 0,
.maximum = 1,
.step = 1,
#define VFLIP_DEF 0
.default_value = VFLIP_DEF,
},
.set = sd_setvflip,
.get = sd_getvflip,
},
};
static const struct v4l2_pix_format vga_mode[] = {
{640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
.priv = 0},
};
#define LOAD_PAGE3 255
#define LOAD_PAGE4 254
#define END_OF_SEQUENCE 0
/* pac 7302 */
static const __u8 init_7302[] = {
/* index,value */
0xff, 0x01, /* page 1 */
0x78, 0x00, /* deactivate */
0xff, 0x01,
0x78, 0x40, /* led off */
};
static const __u8 start_7302[] = {
/* index, len, [value]* */
0xff, 1, 0x00, /* page 0 */
0x00, 12, 0x01, 0x40, 0x40, 0x40, 0x01, 0xe0, 0x02, 0x80,
0x00, 0x00, 0x00, 0x00,
0x0d, 24, 0x03, 0x01, 0x00, 0xb5, 0x07, 0xcb, 0x00, 0x00,
0x07, 0xc8, 0x00, 0xea, 0x07, 0xcf, 0x07, 0xf7,
0x07, 0x7e, 0x01, 0x0b, 0x00, 0x00, 0x00, 0x11,
0x26, 2, 0xaa, 0xaa,
0x2e, 1, 0x31,
0x38, 1, 0x01,
0x3a, 3, 0x14, 0xff, 0x5a,
0x43, 11, 0x00, 0x0a, 0x18, 0x11, 0x01, 0x2c, 0x88, 0x11,
0x00, 0x54, 0x11,
0x55, 1, 0x00,
0x62, 4, 0x10, 0x1e, 0x1e, 0x18,
0x6b, 1, 0x00,
0x6e, 3, 0x08, 0x06, 0x00,
0x72, 3, 0x00, 0xff, 0x00,
0x7d, 23, 0x01, 0x01, 0x58, 0x46, 0x50, 0x3c, 0x50, 0x3c,
0x54, 0x46, 0x54, 0x56, 0x52, 0x50, 0x52, 0x50,
0x56, 0x64, 0xa4, 0x00, 0xda, 0x00, 0x00,
0xa2, 10, 0x22, 0x2c, 0x3c, 0x54, 0x69, 0x7c, 0x9c, 0xb9,
0xd2, 0xeb,
0xaf, 1, 0x02,
0xb5, 2, 0x08, 0x08,
0xb8, 2, 0x08, 0x88,
0xc4, 4, 0xae, 0x01, 0x04, 0x01,
0xcc, 1, 0x00,
0xd1, 11, 0x01, 0x30, 0x49, 0x5e, 0x6f, 0x7f, 0x8e, 0xa9,
0xc1, 0xd7, 0xec,
0xdc, 1, 0x01,
0xff, 1, 0x01, /* page 1 */
0x12, 3, 0x02, 0x00, 0x01,
0x3e, 2, 0x00, 0x00,
0x76, 5, 0x01, 0x20, 0x40, 0x00, 0xf2,
0x7c, 1, 0x00,
0x7f, 10, 0x4b, 0x0f, 0x01, 0x2c, 0x02, 0x58, 0x03, 0x20,
0x02, 0x00,
0x96, 5, 0x01, 0x10, 0x04, 0x01, 0x04,
0xc8, 14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00,
0x07, 0x00, 0x01, 0x07, 0x04, 0x01,
0xd8, 1, 0x01,
0xdb, 2, 0x00, 0x01,
0xde, 7, 0x00, 0x01, 0x04, 0x04, 0x00, 0x00, 0x00,
0xe6, 4, 0x00, 0x00, 0x00, 0x01,
0xeb, 1, 0x00,
0xff, 1, 0x02, /* page 2 */
0x22, 1, 0x00,
0xff, 1, 0x03, /* page 3 */
0, LOAD_PAGE3, /* load the page 3 */
0x11, 1, 0x01,
0xff, 1, 0x02, /* page 2 */
0x13, 1, 0x00,
0x22, 4, 0x1f, 0xa4, 0xf0, 0x96,
0x27, 2, 0x14, 0x0c,
0x2a, 5, 0xc8, 0x00, 0x18, 0x12, 0x22,
0x64, 8, 0x00, 0x00, 0xf0, 0x01, 0x14, 0x44, 0x44, 0x44,
0x6e, 1, 0x08,
0xff, 1, 0x01, /* page 1 */
0x78, 1, 0x00,
0, END_OF_SEQUENCE /* end of sequence */
};
#define SKIP 0xaa
/* page 3 - the value SKIP says skip the index - see reg_w_page() */
static const __u8 page3_7302[] = {
0x90, 0x40, 0x03, 0x50, 0xc2, 0x01, 0x14, 0x16,
0x14, 0x12, 0x00, 0x00, 0x00, 0x02, 0x33, 0x00,
0x0f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x47, 0x01, 0xb3, 0x01, 0x00,
0x00, 0x08, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x21,
0x00, 0x00, 0x00, 0x54, 0xf4, 0x02, 0x52, 0x54,
0xa4, 0xb8, 0xe0, 0x2a, 0xf6, 0x00, 0x00, 0x00,
0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0xfc, 0x00, 0xf2, 0x1f, 0x04, 0x00, 0x00,
0x00, 0x00, 0x00, 0xc0, 0xc0, 0x10, 0x00, 0x00,
0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x40, 0xff, 0x03, 0x19, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc8, 0xc8,
0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50,
0x08, 0x10, 0x24, 0x40, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x02, 0x47, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x02, 0xfa, 0x00, 0x64, 0x5a, 0x28, 0x00,
0x00
};
static int reg_w_buf(struct gspca_dev *gspca_dev,
__u8 index,
const char *buffer, int len)
{
int ret;
memcpy(gspca_dev->usb_buf, buffer, len);
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
1, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, len,
500);
if (ret < 0)
PDEBUG(D_ERR, "reg_w_buf(): "
"Failed to write registers to index 0x%x, error %i",
index, ret);
return ret;
}
static int reg_w(struct gspca_dev *gspca_dev,
__u8 index,
__u8 value)
{
int ret;
gspca_dev->usb_buf[0] = value;
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
0, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, gspca_dev->usb_buf, 1,
500);
if (ret < 0)
PDEBUG(D_ERR, "reg_w(): "
"Failed to write register to index 0x%x, value 0x%x, error %i",
index, value, ret);
return ret;
}
static int reg_w_seq(struct gspca_dev *gspca_dev,
const __u8 *seq, int len)
{
int ret = 0;
while (--len >= 0) {
if (0 <= ret)
ret = reg_w(gspca_dev, seq[0], seq[1]);
seq += 2;
}
return ret;
}
/* load the beginning of a page */
static int reg_w_page(struct gspca_dev *gspca_dev,
const __u8 *page, int len)
{
int index;
int ret = 0;
for (index = 0; index < len; index++) {
if (page[index] == SKIP) /* skip this index */
continue;
gspca_dev->usb_buf[0] = page[index];
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
0, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, gspca_dev->usb_buf, 1,
500);
if (ret < 0) {
PDEBUG(D_ERR, "reg_w_page(): "
"Failed to write register to index 0x%x, "
"value 0x%x, error %i",
index, page[index], ret);
break;
}
}
return ret;
}
/* output a variable sequence */
static int reg_w_var(struct gspca_dev *gspca_dev,
const __u8 *seq,
const __u8 *page3, unsigned int page3_len,
const __u8 *page4, unsigned int page4_len)
{
int index, len;
int ret = 0;
for (;;) {
index = *seq++;
len = *seq++;
switch (len) {
case END_OF_SEQUENCE:
return ret;
case LOAD_PAGE4:
ret = reg_w_page(gspca_dev, page4, page4_len);
break;
case LOAD_PAGE3:
ret = reg_w_page(gspca_dev, page3, page3_len);
break;
default:
if (len > USB_BUF_SZ) {
PDEBUG(D_ERR|D_STREAM,
"Incorrect variable sequence");
return -EINVAL;
}
while (len > 0) {
if (len < 8) {
ret = reg_w_buf(gspca_dev,
index, seq, len);
if (ret < 0)
return ret;
seq += len;
break;
}
ret = reg_w_buf(gspca_dev, index, seq, 8);
seq += 8;
index += 8;
len -= 8;
}
}
if (ret < 0)
return ret;
}
/* not reached */
}
/* this function is called at probe time for pac7302 */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (struct sd *) gspca_dev;
struct cam *cam;
cam = &gspca_dev->cam;
PDEBUG(D_CONF, "Find Sensor PAC7302");
cam->cam_mode = vga_mode; /* only 640x480 */
cam->nmodes = ARRAY_SIZE(vga_mode);
sd->brightness = BRIGHTNESS_DEF;
sd->contrast = CONTRAST_DEF;
sd->colors = COLOR_DEF;
sd->white_balance = WHITEBALANCE_DEF;
sd->red_balance = REDBALANCE_DEF;
sd->blue_balance = BLUEBALANCE_DEF;
sd->gain = GAIN_DEF;
sd->exposure = EXPOSURE_DEF;
sd->autogain = AUTOGAIN_DEF;
sd->hflip = HFLIP_DEF;
sd->vflip = VFLIP_DEF;
sd->flags = id->driver_info;
return 0;
}
/* This function is used by pac7302 only */
static int setbrightcont(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int i, v;
int ret;
static const __u8 max[10] =
{0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb,
0xd4, 0xec};
static const __u8 delta[10] =
{0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17,
0x11, 0x0b};
ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
for (i = 0; i < 10; i++) {
v = max[i];
v += (sd->brightness - BRIGHTNESS_MAX)
* 150 / BRIGHTNESS_MAX; /* 200 ? */
v -= delta[i] * sd->contrast / CONTRAST_MAX;
if (v < 0)
v = 0;
else if (v > 0xff)
v = 0xff;
if (0 <= ret)
ret = reg_w(gspca_dev, 0xa2 + i, v);
}
if (0 <= ret)
ret = reg_w(gspca_dev, 0xdc, 0x01);
return ret;
}
/* This function is used by pac7302 only */
static int setcolors(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int i, v;
int ret;
static const int a[9] =
{217, -212, 0, -101, 170, -67, -38, -315, 355};
static const int b[9] =
{19, 106, 0, 19, 106, 1, 19, 106, 1};
ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
if (0 <= ret)
ret = reg_w(gspca_dev, 0x11, 0x01);
if (0 <= ret)
ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
for (i = 0; i < 9; i++) {
v = a[i] * sd->colors / COLOR_MAX + b[i];
if (0 <= ret)
ret = reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
if (0 <= ret)
ret = reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
}
if (0 <= ret)
ret = reg_w(gspca_dev, 0xdc, 0x01);
PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors);
return ret;
}
static int setwhitebalance(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret;
ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
if (0 <= ret)
ret = reg_w(gspca_dev, 0xc6, sd->white_balance);
if (0 <= ret)
ret = reg_w(gspca_dev, 0xdc, 0x01);
PDEBUG(D_CONF|D_STREAM, "white_balance: %i", sd->white_balance);
return ret;
}
static int setredbalance(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret;
ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
if (0 <= ret)
ret = reg_w(gspca_dev, 0xc5, sd->red_balance);
if (0 <= ret)
ret = reg_w(gspca_dev, 0xdc, 0x01);
PDEBUG(D_CONF|D_STREAM, "red_balance: %i", sd->red_balance);
return ret;
}
static int setbluebalance(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret;
ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
if (0 <= ret)
ret = reg_w(gspca_dev, 0xc7, sd->blue_balance);
if (0 <= ret)
ret = reg_w(gspca_dev, 0xdc, 0x01);
PDEBUG(D_CONF|D_STREAM, "blue_balance: %i", sd->blue_balance);
return ret;
}
static int setgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret;
ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
if (0 <= ret)
ret = reg_w(gspca_dev, 0x10, sd->gain >> 3);
/* load registers to sensor (Bit 0, auto clear) */
if (0 <= ret)
ret = reg_w(gspca_dev, 0x11, 0x01);
return ret;
}
static int setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret;
__u8 reg;
/* register 2 of frame 3/4 contains the clock divider configuring the
no fps according to the formula: 60 / reg. sd->exposure is the
desired exposure time in ms. */
reg = 120 * sd->exposure / 1000;
if (reg < 2)
reg = 2;
else if (reg > 63)
reg = 63;
/* On the pac7302 reg2 MUST be a multiple of 3, so round it to
the nearest multiple of 3, except when between 6 and 12? */
if (reg < 6 || reg > 12)
reg = ((reg + 1) / 3) * 3;
ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
if (0 <= ret)
ret = reg_w(gspca_dev, 0x02, reg);
/* load registers to sensor (Bit 0, auto clear) */
if (0 <= ret)
ret = reg_w(gspca_dev, 0x11, 0x01);
return ret;
}
static int sethvflip(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret;
u8 data, hflip, vflip;
hflip = sd->hflip;
if (sd->flags & FL_HFLIP)
hflip = !hflip;
vflip = sd->vflip;
if (sd->flags & FL_VFLIP)
vflip = !vflip;
ret = reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
data = (hflip ? 0x08 : 0x00) | (vflip ? 0x04 : 0x00);
if (0 <= ret)
ret = reg_w(gspca_dev, 0x21, data);
/* load registers to sensor (Bit 0, auto clear) */
if (0 <= ret)
ret = reg_w(gspca_dev, 0x11, 0x01);
return ret;
}
/* this function is called at probe and resume time for pac7302 */
static int sd_init(struct gspca_dev *gspca_dev)
{
return reg_w_seq(gspca_dev, init_7302, sizeof(init_7302)/2);
}
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret = 0;
sd->sof_read = 0;
ret = reg_w_var(gspca_dev, start_7302,
page3_7302, sizeof(page3_7302),
NULL, 0);
if (0 <= ret)
ret = setbrightcont(gspca_dev);
if (0 <= ret)
ret = setcolors(gspca_dev);
if (0 <= ret)
ret = setwhitebalance(gspca_dev);
if (0 <= ret)
ret = setredbalance(gspca_dev);
if (0 <= ret)
ret = setbluebalance(gspca_dev);
if (0 <= ret)
ret = setgain(gspca_dev);
if (0 <= ret)
ret = setexposure(gspca_dev);
if (0 <= ret)
ret = sethvflip(gspca_dev);
/* only resolution 640x480 is supported for pac7302 */
sd->sof_read = 0;
sd->autogain_ignore_frames = 0;
atomic_set(&sd->avg_lum, -1);
/* start stream */
if (0 <= ret)
ret = reg_w(gspca_dev, 0xff, 0x01);
if (0 <= ret)
ret = reg_w(gspca_dev, 0x78, 0x01);
return ret;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
int ret;
/* stop stream */
ret = reg_w(gspca_dev, 0xff, 0x01);
if (0 <= ret)
ret = reg_w(gspca_dev, 0x78, 0x00);
}
/* called on streamoff with alt 0 and on disconnect for pac7302 */
static void sd_stop0(struct gspca_dev *gspca_dev)
{
int ret;
if (!gspca_dev->present)
return;
ret = reg_w(gspca_dev, 0xff, 0x01);
if (0 <= ret)
ret = reg_w(gspca_dev, 0x78, 0x40);
}
/* Include pac common sof detection functions */
#include "pac_common.h"
static void do_autogain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int avg_lum = atomic_read(&sd->avg_lum);
int desired_lum, deadzone;
if (avg_lum == -1)
return;
desired_lum = 270 + sd->brightness * 4;
/* Hack hack, with the 7202 the first exposure step is
pretty large, so if we're about to make the first
exposure increase make the deadzone large to avoid
oscilating */
if (desired_lum > avg_lum && sd->gain == GAIN_DEF &&
sd->exposure > EXPOSURE_DEF &&
sd->exposure < 42)
deadzone = 90;
else
deadzone = 30;
if (sd->autogain_ignore_frames > 0)
sd->autogain_ignore_frames--;
else if (gspca_auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum,
deadzone, GAIN_KNEE, EXPOSURE_KNEE))
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
}
/* JPEG header, part 1 */
static const unsigned char pac_jpeg_header1[] = {
0xff, 0xd8, /* SOI: Start of Image */
0xff, 0xc0, /* SOF0: Start of Frame (Baseline DCT) */
0x00, 0x11, /* length = 17 bytes (including this length field) */
0x08 /* Precision: 8 */
/* 2 bytes is placed here: number of image lines */
/* 2 bytes is placed here: samples per line */
};
/* JPEG header, continued */
static const unsigned char pac_jpeg_header2[] = {
0x03, /* Number of image components: 3 */
0x01, 0x21, 0x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */
0x02, 0x11, 0x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */
0x03, 0x11, 0x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */
0xff, 0xda, /* SOS: Start Of Scan */
0x00, 0x0c, /* length = 12 bytes (including this length field) */
0x03, /* number of components: 3 */
0x01, 0x00, /* selector 1, table 0x00 */
0x02, 0x11, /* selector 2, table 0x11 */
0x03, 0x11, /* selector 3, table 0x11 */
0x00, 0x3f, /* Spectral selection: 0 .. 63 */
0x00 /* Successive approximation: 0 */
};
static void pac_start_frame(struct gspca_dev *gspca_dev,
struct gspca_frame *frame,
__u16 lines, __u16 samples_per_line)
{
unsigned char tmpbuf[4];
gspca_frame_add(gspca_dev, FIRST_PACKET,
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,
tmpbuf, sizeof(tmpbuf));
gspca_frame_add(gspca_dev, INTER_PACKET,
pac_jpeg_header2, sizeof(pac_jpeg_header2));
}
/* 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;
struct gspca_frame *frame;
unsigned char *sof;
sof = pac_find_sof(&sd->sof_read, data, len);
if (sof) {
int n, lum_offset, footer_length;
frame = gspca_get_i_frame(gspca_dev);
if (frame == NULL) {
gspca_dev->last_packet_type = DISCARD_PACKET;
return;
}
/* 6 bytes after the FF D9 EOF marker a number of lumination
bytes are send corresponding to different parts of the
image, the 14th and 15th byte after the EOF seem to
correspond to the center of the image */
lum_offset = 61 + sizeof pac_sof_marker;
footer_length = 74;
/* Finish decoding current frame */
n = (sof - data) - (footer_length + sizeof pac_sof_marker);
if (n < 0) {
frame->data_end += n;
n = 0;
}
gspca_frame_add(gspca_dev, INTER_PACKET,
data, n);
if (gspca_dev->last_packet_type != DISCARD_PACKET &&
frame->data_end[-2] == 0xff &&
frame->data_end[-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]);
else
atomic_set(&sd->avg_lum, -1);
/* Start the new frame with the jpeg header */
/* The PAC7302 has the image rotated 90 degrees */
pac_start_frame(gspca_dev, frame,
gspca_dev->width, gspca_dev->height);
}
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->brightness = val;
if (gspca_dev->streaming)
setbrightcont(gspca_dev);
return 0;
}
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->brightness;
return 0;
}
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->contrast = val;
if (gspca_dev->streaming) {
setbrightcont(gspca_dev);
}
return 0;
}
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->contrast;
return 0;
}
static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->colors = val;
if (gspca_dev->streaming)
setcolors(gspca_dev);
return 0;
}
static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->colors;
return 0;
}
static int sd_setwhitebalance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret = 0;
sd->white_balance = val;
if (gspca_dev->streaming)
ret = setwhitebalance(gspca_dev);
if (0 <= ret)
ret = 0;
return ret;
}
static int sd_getwhitebalance(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->white_balance;
return 0;
}
static int sd_setredbalance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret = 0;
sd->red_balance = val;
if (gspca_dev->streaming)
ret = setredbalance(gspca_dev);
if (0 <= ret)
ret = 0;
return ret;
}
static int sd_getredbalance(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->red_balance;
return 0;
}
static int sd_setbluebalance(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
int ret = 0;
sd->blue_balance = val;
if (gspca_dev->streaming)
ret = setbluebalance(gspca_dev);
if (0 <= ret)
ret = 0;
return ret;
}
static int sd_getbluebalance(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->blue_balance;
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;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int sd_dbg_s_register(struct gspca_dev *gspca_dev,
struct v4l2_dbg_register *reg)
{
int ret = -EINVAL;
__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 & 0x000000ff;
value = reg->val & 0x000000ff;
/* Note that there shall be no access to other page
by any other function between the page swith and
the actual register write */
ret = reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
if (0 <= ret)
ret = reg_w(gspca_dev, index, value);
if (0 <= ret)
ret = reg_w(gspca_dev, 0xdc, 0x01);
}
return ret;
}
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
/* sub-driver description for pac7302 */
static struct sd_desc sd_desc = {
.name = MODULE_NAME,
.ctrls = sd_ctrls,
.nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
.stop0 = sd_stop0,
.pkt_scan = sd_pkt_scan,
.dq_callback = do_autogain,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.set_register = sd_dbg_s_register,
.get_chip_ident = sd_chip_ident,
#endif
};
/* -- module initialisation -- */
static __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x06f8, 0x3009)},
{USB_DEVICE(0x093a, 0x2620)},
{USB_DEVICE(0x093a, 0x2621)},
{USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2626)},
{USB_DEVICE(0x093a, 0x2628)},
{USB_DEVICE(0x093a, 0x2629), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x262a)},
{USB_DEVICE(0x093a, 0x262c)},
{}
};
MODULE_DEVICE_TABLE(usb, device_table);
/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
THIS_MODULE);
}
static struct usb_driver sd_driver = {
.name = MODULE_NAME,
.id_table = device_table,
.probe = sd_probe,
.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
.suspend = gspca_suspend,
.resume = gspca_resume,
#endif
};
/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
int ret;
ret = usb_register(&sd_driver);
if (ret < 0)
return ret;
PDEBUG(D_PROBE, "registered");
return 0;
}
static void __exit sd_mod_exit(void)
{
usb_deregister(&sd_driver);
PDEBUG(D_PROBE, "deregistered");
}
module_init(sd_mod_init);
module_exit(sd_mod_exit);
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