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linux-sg2042/drivers/media/video/gspca/pac7302.c

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/*
* Pixart PAC7302 driver
*
* Copyright (C) 2008-2012 Jean-Francois Moine <http://moinejf.free.fr>
* Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
*
* Separated from Pixart PAC7311 library by Márton Németh
* Camera button input handling by Márton Németh <nm127@freemail.hu>
* Copyright (C) 2009-2010 Márton Németh <nm127@freemail.hu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Some documentation about various registers as determined by trial and error.
*
* Register page 1:
*
* Address Description
* 0x78 Global control, bit 6 controls the LED (inverted)
* 0x80 Compression balance, 2 interesting settings:
* 0x0f Default
* 0x50 Values >= this switch the camera to a lower compression,
* using the same table for both luminance and chrominance.
* This gives a sharper picture. Only usable when running
* at < 15 fps! Note currently the driver does not use this
* as the quality gain is small and the generated JPG-s are
* only understood by v4l-utils >= 0.8.9
*
* Register page 3:
*
* Address Description
* 0x02 Clock divider 3-63, fps = 90 / val. Must be a multiple of 3 on
* the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
* 0x03 Variable framerate ctrl reg2==3: 0 -> ~30 fps, 255 -> ~22fps
* 0x04 Another var framerate ctrl reg2==3, reg3==0: 0 -> ~30 fps,
* 63 -> ~27 fps, the 2 msb's must always be 1 !!
* 0x05 Another var framerate ctrl reg2==3, reg3==0, reg4==0xc0:
* 1 -> ~30 fps, 2 -> ~20 fps
* 0x0e Exposure bits 0-7, 0-448, 0 = use full frame time
* 0x0f Exposure bit 8, 0-448, 448 = no exposure at all
* 0x10 Gain 0-31
* 0x12 Another gain 0-31, unlike 0x10 this one seems to start with an
* amplification value of 1 rather then 0 at its lowest setting
* 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
* 0x80 Another framerate control, best left at 1, moving it from 1 to
* 2 causes the framerate to become 3/4th of what it was, and
* also seems to cause pixel averaging, resulting in an effective
* resolution of 320x240 and thus a much blockier image
*
* The registers are accessed in the following functions:
*
* Page | Register | Function
* -----+------------+---------------------------------------------------
* 0 | 0x0f..0x20 | setcolors()
* 0 | 0xa2..0xab | setbrightcont()
* 0 | 0xc5 | setredbalance()
* 0 | 0xc6 | setwhitebalance()
* 0 | 0xc7 | setbluebalance()
* 0 | 0xdc | setbrightcont(), setcolors()
* 3 | 0x02 | setexposure()
* 3 | 0x10, 0x12 | setgain()
* 3 | 0x11 | setcolors(), setgain(), setexposure(), sethvflip()
* 3 | 0x21 | sethvflip()
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/input.h>
#include <media/v4l2-chip-ident.h>
#include "gspca.h"
/* Include pac common sof detection functions */
#include "pac_common.h"
MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>, "
"Thomas Kaiser thomas@kaiser-linux.li");
MODULE_DESCRIPTION("Pixart PAC7302");
MODULE_LICENSE("GPL");
enum e_ctrl {
BRIGHTNESS,
CONTRAST,
COLORS,
WHITE_BALANCE,
RED_BALANCE,
BLUE_BALANCE,
GAIN,
AUTOGAIN,
EXPOSURE,
VFLIP,
HFLIP,
NCTRLS /* number of controls */
};
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
struct gspca_ctrl ctrls[NCTRLS];
u8 flags;
#define FL_HFLIP 0x01 /* mirrored by default */
#define FL_VFLIP 0x02 /* vertical flipped by default */
u8 sof_read;
s8 autogain_ignore_frames;
atomic_t avg_lum;
};
/* V4L2 controls supported by the driver */
static void setbrightcont(struct gspca_dev *gspca_dev);
static void setcolors(struct gspca_dev *gspca_dev);
static void setwhitebalance(struct gspca_dev *gspca_dev);
static void setredbalance(struct gspca_dev *gspca_dev);
static void setbluebalance(struct gspca_dev *gspca_dev);
static void setgain(struct gspca_dev *gspca_dev);
static void setexposure(struct gspca_dev *gspca_dev);
static void setautogain(struct gspca_dev *gspca_dev);
static void sethvflip(struct gspca_dev *gspca_dev);
static const struct ctrl sd_ctrls[] = {
[BRIGHTNESS] = {
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
#define BRIGHTNESS_MAX 0x20
.maximum = BRIGHTNESS_MAX,
.step = 1,
.default_value = 0x10,
},
.set_control = setbrightcont
},
[CONTRAST] = {
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
#define CONTRAST_MAX 255
.maximum = CONTRAST_MAX,
.step = 1,
.default_value = 127,
},
.set_control = setbrightcont
},
[COLORS] = {
{
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Saturation",
.minimum = 0,
#define COLOR_MAX 255
.maximum = COLOR_MAX,
.step = 1,
.default_value = 127
},
.set_control = setcolors
},
[WHITE_BALANCE] = {
{
.id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "White Balance",
.minimum = 0,
.maximum = 255,
.step = 1,
.default_value = 4,
},
.set_control = setwhitebalance
},
[RED_BALANCE] = {
{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Red",
.minimum = 0,
.maximum = 3,
.step = 1,
.default_value = 1,
},
.set_control = setredbalance
},
[BLUE_BALANCE] = {
{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Blue",
.minimum = 0,
.maximum = 3,
.step = 1,
.default_value = 1,
},
.set_control = setbluebalance
},
[GAIN] = {
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = 0,
.maximum = 62,
.step = 1,
#define GAIN_DEF 15
#define GAIN_KNEE 46
.default_value = GAIN_DEF,
},
.set_control = setgain
},
[EXPOSURE] = {
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
.minimum = 0,
.maximum = 1023,
.step = 1,
#define EXPOSURE_DEF 66 /* 33 ms / 30 fps */
#define EXPOSURE_KNEE 133 /* 66 ms / 15 fps */
.default_value = EXPOSURE_DEF,
},
.set_control = setexposure
},
[AUTOGAIN] = {
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Gain",
.minimum = 0,
.maximum = 1,
.step = 1,
#define AUTOGAIN_DEF 1
.default_value = AUTOGAIN_DEF,
},
.set_control = setautogain,
},
[HFLIP] = {
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mirror",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
.set_control = sethvflip,
},
[VFLIP] = {
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Vflip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
.set_control = sethvflip
},
};
static const struct v4l2_pix_format vga_mode[] = {
{640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 640,
.sizeimage = 640 * 480 * 3 / 8 + 590,
.colorspace = V4L2_COLORSPACE_JPEG,
},
};
#define LOAD_PAGE3 255
#define END_OF_SEQUENCE 0
static const u8 init_7302[] = {
/* index,value */
0xff, 0x01, /* page 1 */
0x78, 0x00, /* deactivate */
0xff, 0x01,
0x78, 0x40, /* led off */
};
static const u8 start_7302[] = {
/* index, len, [value]* */
0xff, 1, 0x00, /* page 0 */
0x00, 12, 0x01, 0x40, 0x40, 0x40, 0x01, 0xe0, 0x02, 0x80,
0x00, 0x00, 0x00, 0x00,
0x0d, 24, 0x03, 0x01, 0x00, 0xb5, 0x07, 0xcb, 0x00, 0x00,
0x07, 0xc8, 0x00, 0xea, 0x07, 0xcf, 0x07, 0xf7,
0x07, 0x7e, 0x01, 0x0b, 0x00, 0x00, 0x00, 0x11,
0x26, 2, 0xaa, 0xaa,
0x2e, 1, 0x31,
0x38, 1, 0x01,
0x3a, 3, 0x14, 0xff, 0x5a,
0x43, 11, 0x00, 0x0a, 0x18, 0x11, 0x01, 0x2c, 0x88, 0x11,
0x00, 0x54, 0x11,
0x55, 1, 0x00,
0x62, 4, 0x10, 0x1e, 0x1e, 0x18,
0x6b, 1, 0x00,
0x6e, 3, 0x08, 0x06, 0x00,
0x72, 3, 0x00, 0xff, 0x00,
0x7d, 23, 0x01, 0x01, 0x58, 0x46, 0x50, 0x3c, 0x50, 0x3c,
0x54, 0x46, 0x54, 0x56, 0x52, 0x50, 0x52, 0x50,
0x56, 0x64, 0xa4, 0x00, 0xda, 0x00, 0x00,
0xa2, 10, 0x22, 0x2c, 0x3c, 0x54, 0x69, 0x7c, 0x9c, 0xb9,
0xd2, 0xeb,
0xaf, 1, 0x02,
0xb5, 2, 0x08, 0x08,
0xb8, 2, 0x08, 0x88,
0xc4, 4, 0xae, 0x01, 0x04, 0x01,
0xcc, 1, 0x00,
0xd1, 11, 0x01, 0x30, 0x49, 0x5e, 0x6f, 0x7f, 0x8e, 0xa9,
0xc1, 0xd7, 0xec,
0xdc, 1, 0x01,
0xff, 1, 0x01, /* page 1 */
0x12, 3, 0x02, 0x00, 0x01,
0x3e, 2, 0x00, 0x00,
0x76, 5, 0x01, 0x20, 0x40, 0x00, 0xf2,
0x7c, 1, 0x00,
0x7f, 10, 0x4b, 0x0f, 0x01, 0x2c, 0x02, 0x58, 0x03, 0x20,
0x02, 0x00,
0x96, 5, 0x01, 0x10, 0x04, 0x01, 0x04,
0xc8, 14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00,
0x07, 0x00, 0x01, 0x07, 0x04, 0x01,
0xd8, 1, 0x01,
0xdb, 2, 0x00, 0x01,
0xde, 7, 0x00, 0x01, 0x04, 0x04, 0x00, 0x00, 0x00,
0xe6, 4, 0x00, 0x00, 0x00, 0x01,
0xeb, 1, 0x00,
0xff, 1, 0x02, /* page 2 */
0x22, 1, 0x00,
0xff, 1, 0x03, /* page 3 */
0, LOAD_PAGE3, /* load the page 3 */
0x11, 1, 0x01,
0xff, 1, 0x02, /* page 2 */
0x13, 1, 0x00,
0x22, 4, 0x1f, 0xa4, 0xf0, 0x96,
0x27, 2, 0x14, 0x0c,
0x2a, 5, 0xc8, 0x00, 0x18, 0x12, 0x22,
0x64, 8, 0x00, 0x00, 0xf0, 0x01, 0x14, 0x44, 0x44, 0x44,
0x6e, 1, 0x08,
0xff, 1, 0x01, /* page 1 */
0x78, 1, 0x00,
0, END_OF_SEQUENCE /* end of sequence */
};
#define SKIP 0xaa
/* page 3 - the value SKIP says skip the index - see reg_w_page() */
static const u8 page3_7302[] = {
0x90, 0x40, 0x03, 0x00, 0xc0, 0x01, 0x14, 0x16,
0x14, 0x12, 0x00, 0x00, 0x00, 0x02, 0x33, 0x00,
0x0f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x47, 0x01, 0xb3, 0x01, 0x00,
0x00, 0x08, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x21,
0x00, 0x00, 0x00, 0x54, 0xf4, 0x02, 0x52, 0x54,
0xa4, 0xb8, 0xe0, 0x2a, 0xf6, 0x00, 0x00, 0x00,
0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0xfc, 0x00, 0xf2, 0x1f, 0x04, 0x00, 0x00,
SKIP, 0x00, 0x00, 0xc0, 0xc0, 0x10, 0x00, 0x00,
0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x40, 0xff, 0x03, 0x19, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc8, 0xc8,
0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50,
0x08, 0x10, 0x24, 0x40, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x02, 0x47, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x02, 0xfa, 0x00, 0x64, 0x5a, 0x28, 0x00,
0x00
};
static void reg_w_buf(struct gspca_dev *gspca_dev,
u8 index,
const u8 *buffer, int len)
{
int ret;
if (gspca_dev->usb_err < 0)
return;
memcpy(gspca_dev->usb_buf, buffer, len);
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
0, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, len,
500);
if (ret < 0) {
pr_err("reg_w_buf failed i: %02x error %d\n",
index, ret);
gspca_dev->usb_err = ret;
}
}
static void reg_w(struct gspca_dev *gspca_dev,
u8 index,
u8 value)
{
int ret;
if (gspca_dev->usb_err < 0)
return;
gspca_dev->usb_buf[0] = value;
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
0, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, gspca_dev->usb_buf, 1,
500);
if (ret < 0) {
pr_err("reg_w() failed i: %02x v: %02x error %d\n",
index, value, ret);
gspca_dev->usb_err = ret;
}
}
static void reg_w_seq(struct gspca_dev *gspca_dev,
const u8 *seq, int len)
{
while (--len >= 0) {
reg_w(gspca_dev, seq[0], seq[1]);
seq += 2;
}
}
/* load the beginning of a page */
static void reg_w_page(struct gspca_dev *gspca_dev,
const u8 *page, int len)
{
int index;
int ret = 0;
if (gspca_dev->usb_err < 0)
return;
for (index = 0; index < len; index++) {
if (page[index] == SKIP) /* skip this index */
continue;
gspca_dev->usb_buf[0] = page[index];
ret = usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
0, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, gspca_dev->usb_buf, 1,
500);
if (ret < 0) {
pr_err("reg_w_page() failed i: %02x v: %02x error %d\n",
index, page[index], ret);
gspca_dev->usb_err = ret;
break;
}
}
}
/* output a variable sequence */
static void reg_w_var(struct gspca_dev *gspca_dev,
const u8 *seq,
const u8 *page3, unsigned int page3_len)
{
int index, len;
for (;;) {
index = *seq++;
len = *seq++;
switch (len) {
case END_OF_SEQUENCE:
return;
case LOAD_PAGE3:
reg_w_page(gspca_dev, page3, page3_len);
break;
default:
#ifdef GSPCA_DEBUG
if (len > USB_BUF_SZ) {
PDEBUG(D_ERR|D_STREAM,
"Incorrect variable sequence");
return;
}
#endif
while (len > 0) {
if (len < 8) {
reg_w_buf(gspca_dev,
index, seq, len);
seq += len;
break;
}
reg_w_buf(gspca_dev, index, seq, 8);
seq += 8;
index += 8;
len -= 8;
}
}
}
/* not reached */
}
/* this function is called at probe time for pac7302 */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
struct sd *sd = (struct sd *) gspca_dev;
struct cam *cam;
cam = &gspca_dev->cam;
cam->cam_mode = vga_mode; /* only 640x480 */
cam->nmodes = ARRAY_SIZE(vga_mode);
gspca_dev->cam.ctrls = sd->ctrls;
sd->flags = id->driver_info;
return 0;
}
static void setbrightcont(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int i, v;
static const u8 max[10] =
{0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb,
0xd4, 0xec};
static const u8 delta[10] =
{0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17,
0x11, 0x0b};
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
for (i = 0; i < 10; i++) {
v = max[i];
v += (sd->ctrls[BRIGHTNESS].val - BRIGHTNESS_MAX)
* 150 / BRIGHTNESS_MAX; /* 200 ? */
v -= delta[i] * sd->ctrls[CONTRAST].val / CONTRAST_MAX;
if (v < 0)
v = 0;
else if (v > 0xff)
v = 0xff;
reg_w(gspca_dev, 0xa2 + i, v);
}
reg_w(gspca_dev, 0xdc, 0x01);
}
static void setcolors(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int i, v;
static const int a[9] =
{217, -212, 0, -101, 170, -67, -38, -315, 355};
static const int b[9] =
{19, 106, 0, 19, 106, 1, 19, 106, 1};
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
reg_w(gspca_dev, 0x11, 0x01);
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
for (i = 0; i < 9; i++) {
v = a[i] * sd->ctrls[COLORS].val / COLOR_MAX + b[i];
reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
}
reg_w(gspca_dev, 0xdc, 0x01);
}
static void setwhitebalance(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
reg_w(gspca_dev, 0xc6, sd->ctrls[WHITE_BALANCE].val);
reg_w(gspca_dev, 0xdc, 0x01);
}
static void setredbalance(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
reg_w(gspca_dev, 0xc5, sd->ctrls[RED_BALANCE].val);
reg_w(gspca_dev, 0xdc, 0x01);
}
static void setbluebalance(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
reg_w(gspca_dev, 0xc7, sd->ctrls[BLUE_BALANCE].val);
reg_w(gspca_dev, 0xdc, 0x01);
}
static void setgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 reg10, reg12;
if (sd->ctrls[GAIN].val < 32) {
reg10 = sd->ctrls[GAIN].val;
reg12 = 0;
} else {
reg10 = 31;
reg12 = sd->ctrls[GAIN].val - 31;
}
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
reg_w(gspca_dev, 0x10, reg10);
reg_w(gspca_dev, 0x12, reg12);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
}
static void setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 clockdiv;
u16 exposure;
/*
* Register 2 of frame 3 contains the clock divider configuring the
* no fps according to the formula: 90 / reg. sd->exposure is the
* desired exposure time in 0.5 ms.
*/
clockdiv = (90 * sd->ctrls[EXPOSURE].val + 1999) / 2000;
/*
* Note clockdiv = 3 also works, but when running at 30 fps, depending
* on the scene being recorded, the camera switches to another
* quantization table for certain JPEG blocks, and we don't know how
* to decompress these blocks. So we cap the framerate at 15 fps.
*/
if (clockdiv < 6)
clockdiv = 6;
else if (clockdiv > 63)
clockdiv = 63;
/*
* Register 2 MUST be a multiple of 3, except when between 6 and 12?
* Always round up, otherwise we cannot get the desired frametime
* using the partial frame time exposure control.
*/
if (clockdiv < 6 || clockdiv > 12)
clockdiv = ((clockdiv + 2) / 3) * 3;
/*
* frame exposure time in ms = 1000 * clockdiv / 90 ->
* exposure = (sd->exposure / 2) * 448 / (1000 * clockdiv / 90)
*/
exposure = (sd->ctrls[EXPOSURE].val * 45 * 448) / (1000 * clockdiv);
/* 0 = use full frametime, 448 = no exposure, reverse it */
exposure = 448 - exposure;
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
reg_w(gspca_dev, 0x02, clockdiv);
reg_w(gspca_dev, 0x0e, exposure & 0xff);
reg_w(gspca_dev, 0x0f, exposure >> 8);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
}
static void setautogain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
/*
* When switching to autogain set defaults to make sure
* we are on a valid point of the autogain gain /
* exposure knee graph, and give this change time to
* take effect before doing autogain.
*/
if (sd->ctrls[AUTOGAIN].val) {
sd->ctrls[EXPOSURE].val = EXPOSURE_DEF;
sd->ctrls[GAIN].val = GAIN_DEF;
sd->autogain_ignore_frames =
PAC_AUTOGAIN_IGNORE_FRAMES;
} else {
sd->autogain_ignore_frames = -1;
}
setexposure(gspca_dev);
setgain(gspca_dev);
}
static void sethvflip(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 data, hflip, vflip;
hflip = sd->ctrls[HFLIP].val;
if (sd->flags & FL_HFLIP)
hflip = !hflip;
vflip = sd->ctrls[VFLIP].val;
if (sd->flags & FL_VFLIP)
vflip = !vflip;
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
data = (hflip ? 0x08 : 0x00) | (vflip ? 0x04 : 0x00);
reg_w(gspca_dev, 0x21, data);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
}
/* this function is called at probe and resume time for pac7302 */
static int sd_init(struct gspca_dev *gspca_dev)
{
reg_w_seq(gspca_dev, init_7302, sizeof(init_7302)/2);
return gspca_dev->usb_err;
}
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w_var(gspca_dev, start_7302,
page3_7302, sizeof(page3_7302));
setbrightcont(gspca_dev);
setcolors(gspca_dev);
setwhitebalance(gspca_dev);
setredbalance(gspca_dev);
setbluebalance(gspca_dev);
setautogain(gspca_dev);
sethvflip(gspca_dev);
sd->sof_read = 0;
atomic_set(&sd->avg_lum, 270 + sd->ctrls[BRIGHTNESS].val);
/* start stream */
reg_w(gspca_dev, 0xff, 0x01);
reg_w(gspca_dev, 0x78, 0x01);
return gspca_dev->usb_err;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
/* stop stream */
reg_w(gspca_dev, 0xff, 0x01);
reg_w(gspca_dev, 0x78, 0x00);
}
/* called on streamoff with alt 0 and on disconnect for pac7302 */
static void sd_stop0(struct gspca_dev *gspca_dev)
{
if (!gspca_dev->present)
return;
reg_w(gspca_dev, 0xff, 0x01);
reg_w(gspca_dev, 0x78, 0x40);
}
#define WANT_REGULAR_AUTOGAIN
#include "autogain_functions.h"
static void do_autogain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int avg_lum = atomic_read(&sd->avg_lum);
int desired_lum;
const int deadzone = 30;
if (sd->autogain_ignore_frames < 0)
return;
if (sd->autogain_ignore_frames > 0) {
sd->autogain_ignore_frames--;
} else {
desired_lum = 270 + sd->ctrls[BRIGHTNESS].val;
auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum,
deadzone, GAIN_KNEE, EXPOSURE_KNEE);
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
}
}
/* JPEG header */
static const u8 jpeg_header[] = {
0xff, 0xd8, /* SOI: Start of Image */
0xff, 0xc0, /* SOF0: Start of Frame (Baseline DCT) */
0x00, 0x11, /* length = 17 bytes (including this length field) */
0x08, /* Precision: 8 */
0x02, 0x80, /* height = 640 (image rotated) */
0x01, 0xe0, /* width = 480 */
0x03, /* Number of image components: 3 */
0x01, 0x21, 0x00, /* ID=1, Subsampling 1x1, Quantization table: 0 */
0x02, 0x11, 0x01, /* ID=2, Subsampling 2x1, Quantization table: 1 */
0x03, 0x11, 0x01, /* ID=3, Subsampling 2x1, Quantization table: 1 */
0xff, 0xda, /* SOS: Start Of Scan */
0x00, 0x0c, /* length = 12 bytes (including this length field) */
0x03, /* number of components: 3 */
0x01, 0x00, /* selector 1, table 0x00 */
0x02, 0x11, /* selector 2, table 0x11 */
0x03, 0x11, /* selector 3, table 0x11 */
0x00, 0x3f, /* Spectral selection: 0 .. 63 */
0x00 /* Successive approximation: 0 */
};
/* this function is run at interrupt level */
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, /* isoc packet */
int len) /* iso packet length */
{
struct sd *sd = (struct sd *) gspca_dev;
u8 *image;
u8 *sof;
sof = pac_find_sof(&sd->sof_read, data, len);
if (sof) {
int n, lum_offset, footer_length;
/*
* 6 bytes after the FF D9 EOF marker a number of lumination
* bytes are send corresponding to different parts of the
* image, the 14th and 15th byte after the EOF seem to
* correspond to the center of the image.
*/
lum_offset = 61 + sizeof pac_sof_marker;
footer_length = 74;
/* Finish decoding current frame */
n = (sof - data) - (footer_length + sizeof pac_sof_marker);
if (n < 0) {
gspca_dev->image_len += n;
n = 0;
} else {
gspca_frame_add(gspca_dev, INTER_PACKET, data, n);
}
image = gspca_dev->image;
if (image != NULL
&& image[gspca_dev->image_len - 2] == 0xff
&& image[gspca_dev->image_len - 1] == 0xd9)
gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
n = sof - data;
len -= n;
data = sof;
/* Get average lumination */
if (gspca_dev->last_packet_type == LAST_PACKET &&
n >= lum_offset)
atomic_set(&sd->avg_lum, data[-lum_offset] +
data[-lum_offset + 1]);
/* Start the new frame with the jpeg header */
/* The PAC7302 has the image rotated 90 degrees */
gspca_frame_add(gspca_dev, FIRST_PACKET,
jpeg_header, sizeof jpeg_header);
}
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int sd_dbg_s_register(struct gspca_dev *gspca_dev,
struct v4l2_dbg_register *reg)
{
u8 index;
u8 value;
/*
* reg->reg: bit0..15: reserved for register index (wIndex is 16bit
* long on the USB bus)
*/
if (reg->match.type == V4L2_CHIP_MATCH_HOST &&
reg->match.addr == 0 &&
(reg->reg < 0x000000ff) &&
(reg->val <= 0x000000ff)
) {
/* Currently writing to page 0 is only supported. */
/* reg_w() only supports 8bit index */
index = reg->reg;
value = reg->val;
/*
* Note that there shall be no access to other page
* by any other function between the page switch and
* the actual register write.
*/
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
reg_w(gspca_dev, index, value);
reg_w(gspca_dev, 0xdc, 0x01);
}
return gspca_dev->usb_err;
}
static int sd_chip_ident(struct gspca_dev *gspca_dev,
struct v4l2_dbg_chip_ident *chip)
{
int ret = -EINVAL;
if (chip->match.type == V4L2_CHIP_MATCH_HOST &&
chip->match.addr == 0) {
chip->revision = 0;
chip->ident = V4L2_IDENT_UNKNOWN;
ret = 0;
}
return ret;
}
#endif
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, /* interrupt packet data */
int len) /* interrput packet length */
{
int ret = -EINVAL;
u8 data0, data1;
if (len == 2) {
data0 = data[0];
data1 = data[1];
if ((data0 == 0x00 && data1 == 0x11) ||
(data0 == 0x22 && data1 == 0x33) ||
(data0 == 0x44 && data1 == 0x55) ||
(data0 == 0x66 && data1 == 0x77) ||
(data0 == 0x88 && data1 == 0x99) ||
(data0 == 0xaa && data1 == 0xbb) ||
(data0 == 0xcc && data1 == 0xdd) ||
(data0 == 0xee && data1 == 0xff)) {
input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
input_sync(gspca_dev->input_dev);
input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
input_sync(gspca_dev->input_dev);
ret = 0;
}
}
return ret;
}
#endif
/* sub-driver description for pac7302 */
static const struct sd_desc sd_desc = {
.name = KBUILD_MODNAME,
.ctrls = sd_ctrls,
.nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
.stop0 = sd_stop0,
.pkt_scan = sd_pkt_scan,
.dq_callback = do_autogain,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.set_register = sd_dbg_s_register,
.get_chip_ident = sd_chip_ident,
#endif
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
.int_pkt_scan = sd_int_pkt_scan,
#endif
};
/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
{USB_DEVICE(0x06f8, 0x3009)},
{USB_DEVICE(0x06f8, 0x301b)},
{USB_DEVICE(0x093a, 0x2620)},
{USB_DEVICE(0x093a, 0x2621)},
{USB_DEVICE(0x093a, 0x2622), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2624), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2625)},
{USB_DEVICE(0x093a, 0x2626)},
{USB_DEVICE(0x093a, 0x2627), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x2628)},
{USB_DEVICE(0x093a, 0x2629), .driver_info = FL_VFLIP},
{USB_DEVICE(0x093a, 0x262a)},
{USB_DEVICE(0x093a, 0x262c)},
{USB_DEVICE(0x145f, 0x013c)},
{}
};
MODULE_DEVICE_TABLE(usb, device_table);
/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
THIS_MODULE);
}
static struct usb_driver sd_driver = {
.name = KBUILD_MODNAME,
.id_table = device_table,
.probe = sd_probe,
.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
.suspend = gspca_suspend,
.resume = gspca_resume,
#endif
};
module_usb_driver(sd_driver);
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