mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 05:02:12 +00:00
ac399cd313
The autogain was always active. Signed-off-by: Jean-François Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
972 lines
26 KiB
C
972 lines
26 KiB
C
/*
|
|
* Pixart PAC7302 driver
|
|
*
|
|
* Copyright (C) 2008-2012 Jean-Francois Moine <http://moinejf.free.fr>
|
|
* Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
|
|
*
|
|
* Separated from Pixart PAC7311 library by Márton Németh
|
|
* Camera button input handling by Márton Németh <nm127@freemail.hu>
|
|
* Copyright (C) 2009-2010 Márton Németh <nm127@freemail.hu>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/* Some documentation about various registers as determined by trial and error.
|
|
|
|
Register page 1:
|
|
|
|
Address Description
|
|
0x78 Global control, bit 6 controls the LED (inverted)
|
|
|
|
Register page 3:
|
|
|
|
Address Description
|
|
0x02 Clock divider 3-63, fps = 90 / val. Must be a multiple of 3 on
|
|
the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
|
|
0x03 Variable framerate ctrl reg2==3: 0 -> ~30 fps, 255 -> ~22fps
|
|
0x04 Another var framerate ctrl reg2==3, reg3==0: 0 -> ~30 fps,
|
|
63 -> ~27 fps, the 2 msb's must always be 1 !!
|
|
0x05 Another var framerate ctrl reg2==3, reg3==0, reg4==0xc0:
|
|
1 -> ~30 fps, 2 -> ~20 fps
|
|
0x0e Exposure bits 0-7, 0-448, 0 = use full frame time
|
|
0x0f Exposure bit 8, 0-448, 448 = no exposure at all
|
|
0x10 Master gain 0-31
|
|
0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
|
|
|
|
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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/input.h>
|
|
#include <media/v4l2-chip-ident.h>
|
|
#include "gspca.h"
|
|
/* Include pac common sof detection functions */
|
|
#include "pac_common.h"
|
|
|
|
MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>, "
|
|
"Thomas Kaiser thomas@kaiser-linux.li");
|
|
MODULE_DESCRIPTION("Pixart PAC7302");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
enum e_ctrl {
|
|
BRIGHTNESS,
|
|
CONTRAST,
|
|
COLORS,
|
|
WHITE_BALANCE,
|
|
RED_BALANCE,
|
|
BLUE_BALANCE,
|
|
GAIN,
|
|
AUTOGAIN,
|
|
EXPOSURE,
|
|
VFLIP,
|
|
HFLIP,
|
|
NCTRLS /* number of controls */
|
|
};
|
|
|
|
/* specific webcam descriptor for pac7302 */
|
|
struct sd {
|
|
struct gspca_dev gspca_dev; /* !! must be the first item */
|
|
|
|
struct gspca_ctrl ctrls[NCTRLS];
|
|
|
|
u8 flags;
|
|
#define FL_HFLIP 0x01 /* mirrored by default */
|
|
#define FL_VFLIP 0x02 /* vertical flipped by default */
|
|
|
|
u8 sof_read;
|
|
s8 autogain_ignore_frames;
|
|
|
|
atomic_t avg_lum;
|
|
};
|
|
|
|
/* V4L2 controls supported by the driver */
|
|
static void setbrightcont(struct gspca_dev *gspca_dev);
|
|
static void setcolors(struct gspca_dev *gspca_dev);
|
|
static void setwhitebalance(struct gspca_dev *gspca_dev);
|
|
static void setredbalance(struct gspca_dev *gspca_dev);
|
|
static void setbluebalance(struct gspca_dev *gspca_dev);
|
|
static void setgain(struct gspca_dev *gspca_dev);
|
|
static void setexposure(struct gspca_dev *gspca_dev);
|
|
static void setautogain(struct gspca_dev *gspca_dev);
|
|
static void sethvflip(struct gspca_dev *gspca_dev);
|
|
|
|
static const struct ctrl sd_ctrls[] = {
|
|
[BRIGHTNESS] = {
|
|
{
|
|
.id = V4L2_CID_BRIGHTNESS,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Brightness",
|
|
.minimum = 0,
|
|
#define BRIGHTNESS_MAX 0x20
|
|
.maximum = BRIGHTNESS_MAX,
|
|
.step = 1,
|
|
.default_value = 0x10,
|
|
},
|
|
.set_control = setbrightcont
|
|
},
|
|
[CONTRAST] = {
|
|
{
|
|
.id = V4L2_CID_CONTRAST,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Contrast",
|
|
.minimum = 0,
|
|
#define CONTRAST_MAX 255
|
|
.maximum = CONTRAST_MAX,
|
|
.step = 1,
|
|
.default_value = 127,
|
|
},
|
|
.set_control = setbrightcont
|
|
},
|
|
[COLORS] = {
|
|
{
|
|
.id = V4L2_CID_SATURATION,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Saturation",
|
|
.minimum = 0,
|
|
#define COLOR_MAX 255
|
|
.maximum = COLOR_MAX,
|
|
.step = 1,
|
|
.default_value = 127
|
|
},
|
|
.set_control = setcolors
|
|
},
|
|
[WHITE_BALANCE] = {
|
|
{
|
|
.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "White Balance",
|
|
.minimum = 0,
|
|
.maximum = 255,
|
|
.step = 1,
|
|
.default_value = 4,
|
|
},
|
|
.set_control = setwhitebalance
|
|
},
|
|
[RED_BALANCE] = {
|
|
{
|
|
.id = V4L2_CID_RED_BALANCE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Red",
|
|
.minimum = 0,
|
|
.maximum = 3,
|
|
.step = 1,
|
|
.default_value = 1,
|
|
},
|
|
.set_control = setredbalance
|
|
},
|
|
[BLUE_BALANCE] = {
|
|
{
|
|
.id = V4L2_CID_BLUE_BALANCE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Blue",
|
|
.minimum = 0,
|
|
.maximum = 3,
|
|
.step = 1,
|
|
.default_value = 1,
|
|
},
|
|
.set_control = setbluebalance
|
|
},
|
|
[GAIN] = {
|
|
{
|
|
.id = V4L2_CID_GAIN,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Gain",
|
|
.minimum = 0,
|
|
.maximum = 255,
|
|
.step = 1,
|
|
#define GAIN_DEF 127
|
|
#define GAIN_KNEE 255 /* Gain seems to cause little noise on the pac73xx */
|
|
.default_value = GAIN_DEF,
|
|
},
|
|
.set_control = setgain
|
|
},
|
|
[EXPOSURE] = {
|
|
{
|
|
.id = V4L2_CID_EXPOSURE,
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.name = "Exposure",
|
|
.minimum = 0,
|
|
.maximum = 1023,
|
|
.step = 1,
|
|
#define EXPOSURE_DEF 66 /* 33 ms / 30 fps */
|
|
#define EXPOSURE_KNEE 133 /* 66 ms / 15 fps */
|
|
.default_value = EXPOSURE_DEF,
|
|
},
|
|
.set_control = setexposure
|
|
},
|
|
[AUTOGAIN] = {
|
|
{
|
|
.id = V4L2_CID_AUTOGAIN,
|
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
|
.name = "Auto Gain",
|
|
.minimum = 0,
|
|
.maximum = 1,
|
|
.step = 1,
|
|
#define AUTOGAIN_DEF 1
|
|
.default_value = AUTOGAIN_DEF,
|
|
},
|
|
.set_control = setautogain,
|
|
},
|
|
[HFLIP] = {
|
|
{
|
|
.id = V4L2_CID_HFLIP,
|
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
|
.name = "Mirror",
|
|
.minimum = 0,
|
|
.maximum = 1,
|
|
.step = 1,
|
|
.default_value = 0,
|
|
},
|
|
.set_control = sethvflip,
|
|
},
|
|
[VFLIP] = {
|
|
{
|
|
.id = V4L2_CID_VFLIP,
|
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
|
.name = "Vflip",
|
|
.minimum = 0,
|
|
.maximum = 1,
|
|
.step = 1,
|
|
.default_value = 0,
|
|
},
|
|
.set_control = sethvflip
|
|
},
|
|
};
|
|
|
|
static const struct v4l2_pix_format vga_mode[] = {
|
|
{640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
|
|
.bytesperline = 640,
|
|
.sizeimage = 640 * 480 * 3 / 8 + 590,
|
|
.colorspace = V4L2_COLORSPACE_JPEG,
|
|
},
|
|
};
|
|
|
|
#define LOAD_PAGE3 255
|
|
#define END_OF_SEQUENCE 0
|
|
|
|
/* 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, 0x00, 0xc0, 0x01, 0x14, 0x16,
|
|
0x14, 0x12, 0x00, 0x00, 0x00, 0x02, 0x33, 0x00,
|
|
0x0f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x47, 0x01, 0xb3, 0x01, 0x00,
|
|
0x00, 0x08, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x21,
|
|
0x00, 0x00, 0x00, 0x54, 0xf4, 0x02, 0x52, 0x54,
|
|
0xa4, 0xb8, 0xe0, 0x2a, 0xf6, 0x00, 0x00, 0x00,
|
|
0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0xfc, 0x00, 0xf2, 0x1f, 0x04, 0x00, 0x00,
|
|
SKIP, 0x00, 0x00, 0xc0, 0xc0, 0x10, 0x00, 0x00,
|
|
0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x40, 0xff, 0x03, 0x19, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc8, 0xc8,
|
|
0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50,
|
|
0x08, 0x10, 0x24, 0x40, 0x00, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x02, 0x47, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x02, 0xfa, 0x00, 0x64, 0x5a, 0x28, 0x00,
|
|
0x00
|
|
};
|
|
|
|
static void reg_w_buf(struct gspca_dev *gspca_dev,
|
|
u8 index,
|
|
const u8 *buffer, int len)
|
|
{
|
|
int ret;
|
|
|
|
if (gspca_dev->usb_err < 0)
|
|
return;
|
|
memcpy(gspca_dev->usb_buf, buffer, len);
|
|
ret = usb_control_msg(gspca_dev->dev,
|
|
usb_sndctrlpipe(gspca_dev->dev, 0),
|
|
0, /* request */
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, /* value */
|
|
index, gspca_dev->usb_buf, len,
|
|
500);
|
|
if (ret < 0) {
|
|
pr_err("reg_w_buf failed i: %02x error %d\n",
|
|
index, ret);
|
|
gspca_dev->usb_err = ret;
|
|
}
|
|
}
|
|
|
|
|
|
static void reg_w(struct gspca_dev *gspca_dev,
|
|
u8 index,
|
|
u8 value)
|
|
{
|
|
int ret;
|
|
|
|
if (gspca_dev->usb_err < 0)
|
|
return;
|
|
gspca_dev->usb_buf[0] = value;
|
|
ret = usb_control_msg(gspca_dev->dev,
|
|
usb_sndctrlpipe(gspca_dev->dev, 0),
|
|
0, /* request */
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, index, gspca_dev->usb_buf, 1,
|
|
500);
|
|
if (ret < 0) {
|
|
pr_err("reg_w() failed i: %02x v: %02x error %d\n",
|
|
index, value, ret);
|
|
gspca_dev->usb_err = ret;
|
|
}
|
|
}
|
|
|
|
static void reg_w_seq(struct gspca_dev *gspca_dev,
|
|
const u8 *seq, int len)
|
|
{
|
|
while (--len >= 0) {
|
|
reg_w(gspca_dev, seq[0], seq[1]);
|
|
seq += 2;
|
|
}
|
|
}
|
|
|
|
/* load the beginning of a page */
|
|
static void reg_w_page(struct gspca_dev *gspca_dev,
|
|
const u8 *page, int len)
|
|
{
|
|
int index;
|
|
int ret = 0;
|
|
|
|
if (gspca_dev->usb_err < 0)
|
|
return;
|
|
for (index = 0; index < len; index++) {
|
|
if (page[index] == SKIP) /* skip this index */
|
|
continue;
|
|
gspca_dev->usb_buf[0] = page[index];
|
|
ret = usb_control_msg(gspca_dev->dev,
|
|
usb_sndctrlpipe(gspca_dev->dev, 0),
|
|
0, /* request */
|
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
|
|
0, index, gspca_dev->usb_buf, 1,
|
|
500);
|
|
if (ret < 0) {
|
|
pr_err("reg_w_page() failed i: %02x v: %02x error %d\n",
|
|
index, page[index], ret);
|
|
gspca_dev->usb_err = ret;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* output a variable sequence */
|
|
static void reg_w_var(struct gspca_dev *gspca_dev,
|
|
const u8 *seq,
|
|
const u8 *page3, unsigned int page3_len)
|
|
{
|
|
int index, len;
|
|
|
|
for (;;) {
|
|
index = *seq++;
|
|
len = *seq++;
|
|
switch (len) {
|
|
case END_OF_SEQUENCE:
|
|
return;
|
|
case LOAD_PAGE3:
|
|
reg_w_page(gspca_dev, page3, page3_len);
|
|
break;
|
|
default:
|
|
#ifdef GSPCA_DEBUG
|
|
if (len > USB_BUF_SZ) {
|
|
PDEBUG(D_ERR|D_STREAM,
|
|
"Incorrect variable sequence");
|
|
return;
|
|
}
|
|
#endif
|
|
while (len > 0) {
|
|
if (len < 8) {
|
|
reg_w_buf(gspca_dev,
|
|
index, seq, len);
|
|
seq += len;
|
|
break;
|
|
}
|
|
reg_w_buf(gspca_dev, index, seq, 8);
|
|
seq += 8;
|
|
index += 8;
|
|
len -= 8;
|
|
}
|
|
}
|
|
}
|
|
/* not reached */
|
|
}
|
|
|
|
/* this function is called at probe time for pac7302 */
|
|
static int sd_config(struct gspca_dev *gspca_dev,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
struct cam *cam;
|
|
|
|
cam = &gspca_dev->cam;
|
|
|
|
cam->cam_mode = vga_mode; /* only 640x480 */
|
|
cam->nmodes = ARRAY_SIZE(vga_mode);
|
|
|
|
gspca_dev->cam.ctrls = sd->ctrls;
|
|
|
|
sd->flags = id->driver_info;
|
|
return 0;
|
|
}
|
|
|
|
/* This function is used by pac7302 only */
|
|
static void setbrightcont(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
int i, v;
|
|
static const u8 max[10] =
|
|
{0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb,
|
|
0xd4, 0xec};
|
|
static const u8 delta[10] =
|
|
{0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17,
|
|
0x11, 0x0b};
|
|
|
|
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
|
|
for (i = 0; i < 10; i++) {
|
|
v = max[i];
|
|
v += (sd->ctrls[BRIGHTNESS].val - BRIGHTNESS_MAX)
|
|
* 150 / BRIGHTNESS_MAX; /* 200 ? */
|
|
v -= delta[i] * sd->ctrls[CONTRAST].val / CONTRAST_MAX;
|
|
if (v < 0)
|
|
v = 0;
|
|
else if (v > 0xff)
|
|
v = 0xff;
|
|
reg_w(gspca_dev, 0xa2 + i, v);
|
|
}
|
|
reg_w(gspca_dev, 0xdc, 0x01);
|
|
}
|
|
|
|
/* This function is used by pac7302 only */
|
|
static void setcolors(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
int i, v;
|
|
static const int a[9] =
|
|
{217, -212, 0, -101, 170, -67, -38, -315, 355};
|
|
static const int b[9] =
|
|
{19, 106, 0, 19, 106, 1, 19, 106, 1};
|
|
|
|
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
|
|
reg_w(gspca_dev, 0x11, 0x01);
|
|
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
|
|
for (i = 0; i < 9; i++) {
|
|
v = a[i] * sd->ctrls[COLORS].val / COLOR_MAX + b[i];
|
|
reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
|
|
reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
|
|
}
|
|
reg_w(gspca_dev, 0xdc, 0x01);
|
|
}
|
|
|
|
static void setwhitebalance(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
|
|
reg_w(gspca_dev, 0xc6, sd->ctrls[WHITE_BALANCE].val);
|
|
|
|
reg_w(gspca_dev, 0xdc, 0x01);
|
|
}
|
|
|
|
static void setredbalance(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
|
|
reg_w(gspca_dev, 0xc5, sd->ctrls[RED_BALANCE].val);
|
|
|
|
reg_w(gspca_dev, 0xdc, 0x01);
|
|
}
|
|
|
|
static void setbluebalance(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
|
|
reg_w(gspca_dev, 0xc7, sd->ctrls[BLUE_BALANCE].val);
|
|
|
|
reg_w(gspca_dev, 0xdc, 0x01);
|
|
}
|
|
|
|
static void setgain(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
|
|
reg_w(gspca_dev, 0x10, sd->ctrls[GAIN].val >> 3);
|
|
|
|
/* load registers to sensor (Bit 0, auto clear) */
|
|
reg_w(gspca_dev, 0x11, 0x01);
|
|
}
|
|
|
|
static void setexposure(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
u8 clockdiv;
|
|
u16 exposure;
|
|
|
|
/* register 2 of frame 3 contains the clock divider configuring the
|
|
no fps according to the formula: 90 / reg. sd->exposure is the
|
|
desired exposure time in 0.5 ms. */
|
|
clockdiv = (90 * sd->ctrls[EXPOSURE].val + 1999) / 2000;
|
|
|
|
/* Note clockdiv = 3 also works, but when running at 30 fps, depending
|
|
on the scene being recorded, the camera switches to another
|
|
quantization table for certain JPEG blocks, and we don't know how
|
|
to decompress these blocks. So we cap the framerate at 15 fps */
|
|
if (clockdiv < 6)
|
|
clockdiv = 6;
|
|
else if (clockdiv > 63)
|
|
clockdiv = 63;
|
|
|
|
/* reg2 MUST be a multiple of 3, except when between 6 and 12?
|
|
Always round up, otherwise we cannot get the desired frametime
|
|
using the partial frame time exposure control */
|
|
if (clockdiv < 6 || clockdiv > 12)
|
|
clockdiv = ((clockdiv + 2) / 3) * 3;
|
|
|
|
/* frame exposure time in ms = 1000 * clockdiv / 90 ->
|
|
exposure = (sd->exposure / 2) * 448 / (1000 * clockdiv / 90) */
|
|
exposure = (sd->ctrls[EXPOSURE].val * 45 * 448) / (1000 * clockdiv);
|
|
/* 0 = use full frametime, 448 = no exposure, reverse it */
|
|
exposure = 448 - exposure;
|
|
|
|
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
|
|
reg_w(gspca_dev, 0x02, clockdiv);
|
|
reg_w(gspca_dev, 0x0e, exposure & 0xff);
|
|
reg_w(gspca_dev, 0x0f, exposure >> 8);
|
|
|
|
/* load registers to sensor (Bit 0, auto clear) */
|
|
reg_w(gspca_dev, 0x11, 0x01);
|
|
}
|
|
|
|
static void setautogain(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
/* when switching to autogain set defaults to make sure
|
|
we are on a valid point of the autogain gain /
|
|
exposure knee graph, and give this change time to
|
|
take effect before doing autogain. */
|
|
if (sd->ctrls[AUTOGAIN].val) {
|
|
sd->ctrls[EXPOSURE].val = EXPOSURE_DEF;
|
|
sd->ctrls[GAIN].val = GAIN_DEF;
|
|
sd->autogain_ignore_frames =
|
|
PAC_AUTOGAIN_IGNORE_FRAMES;
|
|
} else {
|
|
sd->autogain_ignore_frames = -1;
|
|
}
|
|
setexposure(gspca_dev);
|
|
setgain(gspca_dev);
|
|
}
|
|
|
|
static void sethvflip(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
u8 data, hflip, vflip;
|
|
|
|
hflip = sd->ctrls[HFLIP].val;
|
|
if (sd->flags & FL_HFLIP)
|
|
hflip = !hflip;
|
|
vflip = sd->ctrls[VFLIP].val;
|
|
if (sd->flags & FL_VFLIP)
|
|
vflip = !vflip;
|
|
|
|
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
|
|
data = (hflip ? 0x08 : 0x00) | (vflip ? 0x04 : 0x00);
|
|
reg_w(gspca_dev, 0x21, data);
|
|
|
|
/* load registers to sensor (Bit 0, auto clear) */
|
|
reg_w(gspca_dev, 0x11, 0x01);
|
|
}
|
|
|
|
/* this function is called at probe and resume time for pac7302 */
|
|
static int sd_init(struct gspca_dev *gspca_dev)
|
|
{
|
|
reg_w_seq(gspca_dev, init_7302, sizeof(init_7302)/2);
|
|
return gspca_dev->usb_err;
|
|
}
|
|
|
|
static int sd_start(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
reg_w_var(gspca_dev, start_7302,
|
|
page3_7302, sizeof(page3_7302));
|
|
setbrightcont(gspca_dev);
|
|
setcolors(gspca_dev);
|
|
setwhitebalance(gspca_dev);
|
|
setredbalance(gspca_dev);
|
|
setbluebalance(gspca_dev);
|
|
setautogain(gspca_dev);
|
|
sethvflip(gspca_dev);
|
|
|
|
/* only resolution 640x480 is supported for pac7302 */
|
|
|
|
sd->sof_read = 0;
|
|
atomic_set(&sd->avg_lum, 270 + sd->ctrls[BRIGHTNESS].val);
|
|
|
|
/* start stream */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x78, 0x01);
|
|
|
|
return gspca_dev->usb_err;
|
|
}
|
|
|
|
static void sd_stopN(struct gspca_dev *gspca_dev)
|
|
{
|
|
|
|
/* stop stream */
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x78, 0x00);
|
|
}
|
|
|
|
/* called on streamoff with alt 0 and on disconnect for pac7302 */
|
|
static void sd_stop0(struct gspca_dev *gspca_dev)
|
|
{
|
|
if (!gspca_dev->present)
|
|
return;
|
|
reg_w(gspca_dev, 0xff, 0x01);
|
|
reg_w(gspca_dev, 0x78, 0x40);
|
|
}
|
|
|
|
/* !! coarse_grained_expo_autogain is not used !! */
|
|
#define exp_too_low_cnt flags
|
|
#define exp_too_high_cnt sof_read
|
|
#include "autogain_functions.h"
|
|
|
|
static void do_autogain(struct gspca_dev *gspca_dev)
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
int avg_lum = atomic_read(&sd->avg_lum);
|
|
int desired_lum;
|
|
const int deadzone = 30;
|
|
|
|
if (sd->autogain_ignore_frames < 0)
|
|
return;
|
|
|
|
if (sd->autogain_ignore_frames > 0) {
|
|
sd->autogain_ignore_frames--;
|
|
} else {
|
|
desired_lum = 270 + sd->ctrls[BRIGHTNESS].val;
|
|
|
|
auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum,
|
|
deadzone, GAIN_KNEE, EXPOSURE_KNEE);
|
|
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
|
|
}
|
|
}
|
|
|
|
/* JPEG header */
|
|
static const u8 jpeg_header[] = {
|
|
0xff, 0xd8, /* SOI: Start of Image */
|
|
|
|
0xff, 0xc0, /* SOF0: Start of Frame (Baseline DCT) */
|
|
0x00, 0x11, /* length = 17 bytes (including this length field) */
|
|
0x08, /* Precision: 8 */
|
|
0x02, 0x80, /* height = 640 (image rotated) */
|
|
0x01, 0xe0, /* width = 480 */
|
|
0x03, /* Number of image components: 3 */
|
|
0x01, 0x21, 0x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */
|
|
0x02, 0x11, 0x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */
|
|
0x03, 0x11, 0x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */
|
|
|
|
0xff, 0xda, /* SOS: Start Of Scan */
|
|
0x00, 0x0c, /* length = 12 bytes (including this length field) */
|
|
0x03, /* number of components: 3 */
|
|
0x01, 0x00, /* selector 1, table 0x00 */
|
|
0x02, 0x11, /* selector 2, table 0x11 */
|
|
0x03, 0x11, /* selector 3, table 0x11 */
|
|
0x00, 0x3f, /* Spectral selection: 0 .. 63 */
|
|
0x00 /* Successive approximation: 0 */
|
|
};
|
|
|
|
/* this function is run at interrupt level */
|
|
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
|
|
u8 *data, /* isoc packet */
|
|
int len) /* iso packet length */
|
|
{
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
u8 *image;
|
|
u8 *sof;
|
|
|
|
sof = pac_find_sof(&sd->sof_read, data, len);
|
|
if (sof) {
|
|
int n, lum_offset, footer_length;
|
|
|
|
/* 6 bytes after the FF D9 EOF marker a number of lumination
|
|
bytes are send corresponding to different parts of the
|
|
image, the 14th and 15th byte after the EOF seem to
|
|
correspond to the center of the image */
|
|
lum_offset = 61 + sizeof pac_sof_marker;
|
|
footer_length = 74;
|
|
|
|
/* Finish decoding current frame */
|
|
n = (sof - data) - (footer_length + sizeof pac_sof_marker);
|
|
if (n < 0) {
|
|
gspca_dev->image_len += n;
|
|
n = 0;
|
|
} else {
|
|
gspca_frame_add(gspca_dev, INTER_PACKET, data, n);
|
|
}
|
|
|
|
image = gspca_dev->image;
|
|
if (image != NULL
|
|
&& image[gspca_dev->image_len - 2] == 0xff
|
|
&& image[gspca_dev->image_len - 1] == 0xd9)
|
|
gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
|
|
|
|
n = sof - data;
|
|
len -= n;
|
|
data = sof;
|
|
|
|
/* Get average lumination */
|
|
if (gspca_dev->last_packet_type == LAST_PACKET &&
|
|
n >= lum_offset)
|
|
atomic_set(&sd->avg_lum, data[-lum_offset] +
|
|
data[-lum_offset + 1]);
|
|
|
|
/* Start the new frame with the jpeg header */
|
|
/* The PAC7302 has the image rotated 90 degrees */
|
|
gspca_frame_add(gspca_dev, FIRST_PACKET,
|
|
jpeg_header, sizeof jpeg_header);
|
|
}
|
|
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int sd_dbg_s_register(struct gspca_dev *gspca_dev,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
u8 index;
|
|
u8 value;
|
|
|
|
/* reg->reg: bit0..15: reserved for register index (wIndex is 16bit
|
|
long on the USB bus)
|
|
*/
|
|
if (reg->match.type == V4L2_CHIP_MATCH_HOST &&
|
|
reg->match.addr == 0 &&
|
|
(reg->reg < 0x000000ff) &&
|
|
(reg->val <= 0x000000ff)
|
|
) {
|
|
/* Currently writing to page 0 is only supported. */
|
|
/* reg_w() only supports 8bit index */
|
|
index = reg->reg;
|
|
value = reg->val;
|
|
|
|
/* Note that there shall be no access to other page
|
|
by any other function between the page swith and
|
|
the actual register write */
|
|
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
|
|
reg_w(gspca_dev, index, value);
|
|
|
|
reg_w(gspca_dev, 0xdc, 0x01);
|
|
}
|
|
return gspca_dev->usb_err;
|
|
}
|
|
|
|
static int sd_chip_ident(struct gspca_dev *gspca_dev,
|
|
struct v4l2_dbg_chip_ident *chip)
|
|
{
|
|
int ret = -EINVAL;
|
|
|
|
if (chip->match.type == V4L2_CHIP_MATCH_HOST &&
|
|
chip->match.addr == 0) {
|
|
chip->revision = 0;
|
|
chip->ident = V4L2_IDENT_UNKNOWN;
|
|
ret = 0;
|
|
}
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
|
|
static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
|
|
u8 *data, /* interrupt packet data */
|
|
int len) /* interrput packet length */
|
|
{
|
|
int ret = -EINVAL;
|
|
u8 data0, data1;
|
|
|
|
if (len == 2) {
|
|
data0 = data[0];
|
|
data1 = data[1];
|
|
if ((data0 == 0x00 && data1 == 0x11) ||
|
|
(data0 == 0x22 && data1 == 0x33) ||
|
|
(data0 == 0x44 && data1 == 0x55) ||
|
|
(data0 == 0x66 && data1 == 0x77) ||
|
|
(data0 == 0x88 && data1 == 0x99) ||
|
|
(data0 == 0xaa && data1 == 0xbb) ||
|
|
(data0 == 0xcc && data1 == 0xdd) ||
|
|
(data0 == 0xee && data1 == 0xff)) {
|
|
input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
|
|
input_sync(gspca_dev->input_dev);
|
|
input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
|
|
input_sync(gspca_dev->input_dev);
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
/* sub-driver description for pac7302 */
|
|
static const struct sd_desc sd_desc = {
|
|
.name = KBUILD_MODNAME,
|
|
.ctrls = sd_ctrls,
|
|
.nctrls = ARRAY_SIZE(sd_ctrls),
|
|
.config = sd_config,
|
|
.init = sd_init,
|
|
.start = sd_start,
|
|
.stopN = sd_stopN,
|
|
.stop0 = sd_stop0,
|
|
.pkt_scan = sd_pkt_scan,
|
|
.dq_callback = do_autogain,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.set_register = sd_dbg_s_register,
|
|
.get_chip_ident = sd_chip_ident,
|
|
#endif
|
|
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
|
|
.int_pkt_scan = sd_int_pkt_scan,
|
|
#endif
|
|
};
|
|
|
|
/* -- module initialisation -- */
|
|
static const struct usb_device_id device_table[] = {
|
|
{USB_DEVICE(0x06f8, 0x3009)},
|
|
{USB_DEVICE(0x06f8, 0x301b)},
|
|
{USB_DEVICE(0x093a, 0x2620)},
|
|
{USB_DEVICE(0x093a, 0x2621)},
|
|
{USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP},
|
|
{USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP},
|
|
{USB_DEVICE(0x093a, 0x2625)},
|
|
{USB_DEVICE(0x093a, 0x2626)},
|
|
{USB_DEVICE(0x093a, 0x2628)},
|
|
{USB_DEVICE(0x093a, 0x2629), .driver_info = FL_VFLIP},
|
|
{USB_DEVICE(0x093a, 0x262a)},
|
|
{USB_DEVICE(0x093a, 0x262c)},
|
|
{USB_DEVICE(0x145f, 0x013c)},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(usb, device_table);
|
|
|
|
/* -- device connect -- */
|
|
static int sd_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
|
|
THIS_MODULE);
|
|
}
|
|
|
|
static struct usb_driver sd_driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.id_table = device_table,
|
|
.probe = sd_probe,
|
|
.disconnect = gspca_disconnect,
|
|
#ifdef CONFIG_PM
|
|
.suspend = gspca_suspend,
|
|
.resume = gspca_resume,
|
|
#endif
|
|
};
|
|
|
|
module_usb_driver(sd_driver);
|