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739570bb21
linux/drivers/media/video/gspca/spca561.c
Jean-Francois Moine 739570bb21 V4L/DVB (8352): gspca: Buffers for USB exchanges cannot be in the stack. 
gspca:    Protect dq_callback() against simultaneous USB exchanges.
          Temporary buffer for USB exchanges added in the device struct.
(all)     Use a temporary buffer for all USB exchanges.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20 07:26:14 -03:00

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/*
* Sunplus spca561 subdriver
*
* Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr
*
* V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
*
* 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
*/
#define MODULE_NAME "spca561"
#include "gspca.h"
#define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 7)
static const char version[] = "2.1.7";
MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("GSPCA/SPCA561 USB Camera Driver");
MODULE_LICENSE("GPL");
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
unsigned short contrast;
__u8 brightness;
__u8 autogain;
__u8 chip_revision;
signed char ag_cnt;
#define AG_CNT_START 13
};
/* 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_setautogain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
static struct ctrl sd_ctrls[] = {
#define SD_BRIGHTNESS 0
{
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 0,
.maximum = 63,
.step = 1,
.default_value = 32,
},
.set = sd_setbrightness,
.get = sd_getbrightness,
},
#define SD_CONTRAST 1
{
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 0x3fff,
.step = 1,
.default_value = 0x2000,
},
.set = sd_setcontrast,
.get = sd_getcontrast,
},
#define SD_AUTOGAIN 2
{
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Gain",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 1,
},
.set = sd_setautogain,
.get = sd_getautogain,
},
};
static struct v4l2_pix_format sif_mode[] = {
{160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
.bytesperline = 160,
.sizeimage = 160 * 120,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 3},
{176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
.bytesperline = 176,
.sizeimage = 176 * 144,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 2},
{320, 240, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
.bytesperline = 320,
.sizeimage = 320 * 240 * 4 / 8,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 1},
{352, 288, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
.bytesperline = 352,
.sizeimage = 352 * 288 * 4 / 8,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0},
};
/*
* Initialization data
* I'm not very sure how to split initialization from open data
* chunks. For now, we'll consider everything as initialization
*/
/* Frame packet header offsets for the spca561 */
#define SPCA561_OFFSET_SNAP 1
#define SPCA561_OFFSET_TYPE 2
#define SPCA561_OFFSET_COMPRESS 3
#define SPCA561_OFFSET_FRAMSEQ 4
#define SPCA561_OFFSET_GPIO 5
#define SPCA561_OFFSET_USBBUFF 6
#define SPCA561_OFFSET_WIN2GRAVE 7
#define SPCA561_OFFSET_WIN2RAVE 8
#define SPCA561_OFFSET_WIN2BAVE 9
#define SPCA561_OFFSET_WIN2GBAVE 10
#define SPCA561_OFFSET_WIN1GRAVE 11
#define SPCA561_OFFSET_WIN1RAVE 12
#define SPCA561_OFFSET_WIN1BAVE 13
#define SPCA561_OFFSET_WIN1GBAVE 14
#define SPCA561_OFFSET_FREQ 15
#define SPCA561_OFFSET_VSYNC 16
#define SPCA561_OFFSET_DATA 1
#define SPCA561_INDEX_I2C_BASE 0x8800
#define SPCA561_SNAPBIT 0x20
#define SPCA561_SNAPCTRL 0x40
enum {
Rev072A = 0,
Rev012A,
};
static void reg_w_val(struct usb_device *dev, __u16 index, __u16 value)
{
int ret;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0, /* request */
USB_TYPE_VENDOR | USB_RECIP_DEVICE,
value, index, NULL, 0, 500);
PDEBUG(D_USBO, "reg write: 0x%02x:0x%02x", index, value);
if (ret < 0)
PDEBUG(D_ERR, "reg write: error %d", ret);
}
static void write_vector(struct gspca_dev *gspca_dev,
const __u16 data[][2])
{
struct usb_device *dev = gspca_dev->dev;
int i;
i = 0;
while (data[i][1] != 0) {
reg_w_val(dev, data[i][1], data[i][0]);
i++;
}
}
/* read 'len' bytes to gspca_dev->usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
__u16 index, __u16 length)
{
usb_control_msg(gspca_dev->dev,
usb_rcvctrlpipe(gspca_dev->dev, 0),
0, /* request */
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, length, 500);
}
static void reg_w_buf(struct gspca_dev *gspca_dev,
__u16 index, const __u8 *buffer, __u16 len)
{
memcpy(gspca_dev->usb_buf, buffer, len);
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);
}
static void i2c_init(struct gspca_dev *gspca_dev, __u8 mode)
{
reg_w_val(gspca_dev->dev, 0x92, 0x8804);
reg_w_val(gspca_dev->dev, mode, 0x8802);
}
static void i2c_write(struct gspca_dev *gspca_dev, __u16 valeur, __u16 reg)
{
int retry = 60;
__u8 DataLow;
__u8 DataHight;
DataLow = valeur;
DataHight = valeur >> 8;
reg_w_val(gspca_dev->dev, reg, 0x8801);
reg_w_val(gspca_dev->dev, DataLow, 0x8805);
reg_w_val(gspca_dev->dev, DataHight, 0x8800);
while (retry--) {
reg_r(gspca_dev, 0x8803, 1);
if (!gspca_dev->usb_buf[0])
break;
}
}
static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode)
{
int retry = 60;
__u8 value;
__u8 vallsb;
reg_w_val(gspca_dev->dev, 0x92, 0x8804);
reg_w_val(gspca_dev->dev, reg, 0x8801);
reg_w_val(gspca_dev->dev, (mode | 0x01), 0x8802);
while (retry--) {
reg_r(gspca_dev, 0x8803, 1);
if (!gspca_dev->usb_buf)
break;
}
if (retry == 0)
return -1;
reg_r(gspca_dev, 0x8800, 1);
value = gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8805, 1);
vallsb = gspca_dev->usb_buf[0];
return ((int) value << 8) | vallsb;
}
static const __u16 spca561_init_data[][2] = {
{0x0000, 0x8114}, /* Software GPIO output data */
{0x0001, 0x8114}, /* Software GPIO output data */
{0x0000, 0x8112}, /* Some kind of reset */
{0x0003, 0x8701}, /* PCLK clock delay adjustment */
{0x0001, 0x8703}, /* HSYNC from cmos inverted */
{0x0011, 0x8118}, /* Enable and conf sensor */
{0x0001, 0x8118}, /* Conf sensor */
{0x0092, 0x8804}, /* I know nothing about these */
{0x0010, 0x8802}, /* 0x88xx registers, so I won't */
/***************/
{0x000d, 0x8805}, /* sensor default setting */
{0x0001, 0x8801}, /* 1 <- 0x0d */
{0x0000, 0x8800},
{0x0018, 0x8805},
{0x0002, 0x8801}, /* 2 <- 0x18 */
{0x0000, 0x8800},
{0x0065, 0x8805},
{0x0004, 0x8801}, /* 4 <- 0x01 0x65 */
{0x0001, 0x8800},
{0x0021, 0x8805},
{0x0005, 0x8801}, /* 5 <- 0x21 */
{0x0000, 0x8800},
{0x00aa, 0x8805},
{0x0007, 0x8801}, /* 7 <- 0xaa */
{0x0000, 0x8800},
{0x0004, 0x8805},
{0x0020, 0x8801}, /* 0x20 <- 0x15 0x04 */
{0x0015, 0x8800},
{0x0002, 0x8805},
{0x0039, 0x8801}, /* 0x39 <- 0x02 */
{0x0000, 0x8800},
{0x0010, 0x8805},
{0x0035, 0x8801}, /* 0x35 <- 0x10 */
{0x0000, 0x8800},
{0x0049, 0x8805},
{0x0009, 0x8801}, /* 0x09 <- 0x10 0x49 */
{0x0010, 0x8800},
{0x000b, 0x8805},
{0x0028, 0x8801}, /* 0x28 <- 0x0b */
{0x0000, 0x8800},
{0x000f, 0x8805},
{0x003b, 0x8801}, /* 0x3b <- 0x0f */
{0x0000, 0x8800},
{0x0000, 0x8805},
{0x003c, 0x8801}, /* 0x3c <- 0x00 */
{0x0000, 0x8800},
/***************/
{0x0018, 0x8601}, /* Pixel/line selection for color separation */
{0x0000, 0x8602}, /* Optical black level for user setting */
{0x0060, 0x8604}, /* Optical black horizontal offset */
{0x0002, 0x8605}, /* Optical black vertical offset */
{0x0000, 0x8603}, /* Non-automatic optical black level */
{0x0002, 0x865b}, /* Horizontal offset for valid pixels */
{0x0000, 0x865f}, /* Vertical valid pixels window (x2) */
{0x00b0, 0x865d}, /* Horizontal valid pixels window (x2) */
{0x0090, 0x865e}, /* Vertical valid lines window (x2) */
{0x00e0, 0x8406}, /* Memory buffer threshold */
{0x0000, 0x8660}, /* Compensation memory stuff */
{0x0002, 0x8201}, /* Output address for r/w serial EEPROM */
{0x0008, 0x8200}, /* Clear valid bit for serial EEPROM */
{0x0001, 0x8200}, /* OprMode to be executed by hardware */
{0x0007, 0x8201}, /* Output address for r/w serial EEPROM */
{0x0008, 0x8200}, /* Clear valid bit for serial EEPROM */
{0x0001, 0x8200}, /* OprMode to be executed by hardware */
{0x0010, 0x8660}, /* Compensation memory stuff */
{0x0018, 0x8660}, /* Compensation memory stuff */
{0x0004, 0x8611}, /* R offset for white balance */
{0x0004, 0x8612}, /* Gr offset for white balance */
{0x0007, 0x8613}, /* B offset for white balance */
{0x0000, 0x8614}, /* Gb offset for white balance */
{0x008c, 0x8651}, /* R gain for white balance */
{0x008c, 0x8652}, /* Gr gain for white balance */
{0x00b5, 0x8653}, /* B gain for white balance */
{0x008c, 0x8654}, /* Gb gain for white balance */
{0x0002, 0x8502}, /* Maximum average bit rate stuff */
{0x0011, 0x8802},
{0x0087, 0x8700}, /* Set master clock (96Mhz????) */
{0x0081, 0x8702}, /* Master clock output enable */
{0x0000, 0x8500}, /* Set image type (352x288 no compression) */
/* Originally was 0x0010 (352x288 compression) */
{0x0002, 0x865b}, /* Horizontal offset for valid pixels */
{0x0003, 0x865c}, /* Vertical offset for valid lines */
/***************//* sensor active */
{0x0003, 0x8801}, /* 0x03 <- 0x01 0x21 //289 */
{0x0021, 0x8805},
{0x0001, 0x8800},
{0x0004, 0x8801}, /* 0x04 <- 0x01 0x65 //357 */
{0x0065, 0x8805},
{0x0001, 0x8800},
{0x0005, 0x8801}, /* 0x05 <- 0x2f */
{0x002f, 0x8805},
{0x0000, 0x8800},
{0x0006, 0x8801}, /* 0x06 <- 0 */
{0x0000, 0x8805},
{0x0000, 0x8800},
{0x000a, 0x8801}, /* 0x0a <- 2 */
{0x0002, 0x8805},
{0x0000, 0x8800},
{0x0009, 0x8801}, /* 0x09 <- 0x1061 */
{0x0061, 0x8805},
{0x0010, 0x8800},
{0x0035, 0x8801}, /* 0x35 <-0x14 */
{0x0014, 0x8805},
{0x0000, 0x8800},
{0x0030, 0x8112}, /* ISO and drop packet enable */
{0x0000, 0x8112}, /* Some kind of reset ???? */
{0x0009, 0x8118}, /* Enable sensor and set standby */
{0x0000, 0x8114}, /* Software GPIO output data */
{0x0000, 0x8114}, /* Software GPIO output data */
{0x0001, 0x8114}, /* Software GPIO output data */
{0x0000, 0x8112}, /* Some kind of reset ??? */
{0x0003, 0x8701},
{0x0001, 0x8703},
{0x0011, 0x8118},
{0x0001, 0x8118},
/***************/
{0x0092, 0x8804},
{0x0010, 0x8802},
{0x000d, 0x8805},
{0x0001, 0x8801},
{0x0000, 0x8800},
{0x0018, 0x8805},
{0x0002, 0x8801},
{0x0000, 0x8800},
{0x0065, 0x8805},
{0x0004, 0x8801},
{0x0001, 0x8800},
{0x0021, 0x8805},
{0x0005, 0x8801},
{0x0000, 0x8800},
{0x00aa, 0x8805},
{0x0007, 0x8801}, /* mode 0xaa */
{0x0000, 0x8800},
{0x0004, 0x8805},
{0x0020, 0x8801},
{0x0015, 0x8800}, /* mode 0x0415 */
{0x0002, 0x8805},
{0x0039, 0x8801},
{0x0000, 0x8800},
{0x0010, 0x8805},
{0x0035, 0x8801},
{0x0000, 0x8800},
{0x0049, 0x8805},
{0x0009, 0x8801},
{0x0010, 0x8800},
{0x000b, 0x8805},
{0x0028, 0x8801},
{0x0000, 0x8800},
{0x000f, 0x8805},
{0x003b, 0x8801},
{0x0000, 0x8800},
{0x0000, 0x8805},
{0x003c, 0x8801},
{0x0000, 0x8800},
{0x0002, 0x8502},
{0x0039, 0x8801},
{0x0000, 0x8805},
{0x0000, 0x8800},
{0x0087, 0x8700}, /* overwrite by start */
{0x0081, 0x8702},
{0x0000, 0x8500},
/* {0x0010, 0x8500}, -- Previous line was this */
{0x0002, 0x865b},
{0x0003, 0x865c},
/***************/
{0x0003, 0x8801}, /* 0x121-> 289 */
{0x0021, 0x8805},
{0x0001, 0x8800},
{0x0004, 0x8801}, /* 0x165 -> 357 */
{0x0065, 0x8805},
{0x0001, 0x8800},
{0x0005, 0x8801}, /* 0x2f //blanking control colonne */
{0x002f, 0x8805},
{0x0000, 0x8800},
{0x0006, 0x8801}, /* 0x00 //blanking mode row */
{0x0000, 0x8805},
{0x0000, 0x8800},
{0x000a, 0x8801}, /* 0x01 //0x02 */
{0x0001, 0x8805},
{0x0000, 0x8800},
{0x0009, 0x8801}, /* 0x1061 - setexposure times && pixel clock
* 0001 0 | 000 0110 0001 */
{0x0061, 0x8805}, /* 61 31 */
{0x0008, 0x8800}, /* 08 */
{0x0035, 0x8801}, /* 0x14 - set gain general */
{0x001f, 0x8805}, /* 0x14 */
{0x0000, 0x8800},
{0x0030, 0x8112},
{}
};
static void sensor_reset(struct gspca_dev *gspca_dev)
{
reg_w_val(gspca_dev->dev, 0x8631, 0xc8);
reg_w_val(gspca_dev->dev, 0x8634, 0xc8);
reg_w_val(gspca_dev->dev, 0x8112, 0x00);
reg_w_val(gspca_dev->dev, 0x8114, 0x00);
reg_w_val(gspca_dev->dev, 0x8118, 0x21);
i2c_init(gspca_dev, 0x14);
i2c_write(gspca_dev, 1, 0x0d);
i2c_write(gspca_dev, 0, 0x0d);
}
/******************** QC Express etch2 stuff ********************/
static const __u16 Pb100_1map8300[][2] = {
/* reg, value */
{0x8320, 0x3304},
{0x8303, 0x0125}, /* image area */
{0x8304, 0x0169},
{0x8328, 0x000b},
{0x833c, 0x0001},
{0x832f, 0x0419},
{0x8307, 0x00aa},
{0x8301, 0x0003},
{0x8302, 0x000e},
{}
};
static const __u16 Pb100_2map8300[][2] = {
/* reg, value */
{0x8339, 0x0000},
{0x8307, 0x00aa},
{}
};
static const __u16 spca561_161rev12A_data1[][2] = {
{0x21, 0x8118},
{0x01, 0x8114},
{0x00, 0x8112},
{0x92, 0x8804},
{0x04, 0x8802}, /* windows uses 08 */
{}
};
static const __u16 spca561_161rev12A_data2[][2] = {
{0x21, 0x8118},
{0x10, 0x8500},
{0x07, 0x8601},
{0x07, 0x8602},
{0x04, 0x8501},
{0x21, 0x8118},
{0x07, 0x8201}, /* windows uses 02 */
{0x08, 0x8200},
{0x01, 0x8200},
{0x00, 0x8114},
{0x01, 0x8114}, /* windows uses 00 */
{0x90, 0x8604},
{0x00, 0x8605},
{0xb0, 0x8603},
/* sensor gains */
{0x00, 0x8610}, /* *red */
{0x00, 0x8611}, /* 3f *green */
{0x00, 0x8612}, /* green *blue */
{0x00, 0x8613}, /* blue *green */
{0x35, 0x8614}, /* green *red */
{0x35, 0x8615}, /* 40 *green */
{0x35, 0x8616}, /* 7a *blue */
{0x35, 0x8617}, /* 40 *green */
{0x0c, 0x8620}, /* 0c */
{0xc8, 0x8631}, /* c8 */
{0xc8, 0x8634}, /* c8 */
{0x23, 0x8635}, /* 23 */
{0x1f, 0x8636}, /* 1f */
{0xdd, 0x8637}, /* dd */
{0xe1, 0x8638}, /* e1 */
{0x1d, 0x8639}, /* 1d */
{0x21, 0x863a}, /* 21 */
{0xe3, 0x863b}, /* e3 */
{0xdf, 0x863c}, /* df */
{0xf0, 0x8505},
{0x32, 0x850a},
{}
};
static void sensor_mapwrite(struct gspca_dev *gspca_dev,
const __u16 sensormap[][2])
{
int i = 0;
__u8 usbval[2];
while (sensormap[i][0]) {
usbval[0] = sensormap[i][1];
usbval[1] = sensormap[i][1] >> 8;
reg_w_buf(gspca_dev, sensormap[i][0], usbval, 2);
i++;
}
}
static void init_161rev12A(struct gspca_dev *gspca_dev)
{
sensor_reset(gspca_dev);
write_vector(gspca_dev, spca561_161rev12A_data1);
sensor_mapwrite(gspca_dev, Pb100_1map8300);
write_vector(gspca_dev, spca561_161rev12A_data2);
sensor_mapwrite(gspca_dev, Pb100_2map8300);
}
/* this function is called at probe time */
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;
__u16 vendor, product;
__u8 data1, data2;
/* Read frm global register the USB product and vendor IDs, just to
* prove that we can communicate with the device. This works, which
* confirms at we are communicating properly and that the device
* is a 561. */
reg_r(gspca_dev, 0x8104, 1);
data1 = gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8105, 1);
data2 = gspca_dev->usb_buf[0];
vendor = (data2 << 8) | data1;
reg_r(gspca_dev, 0x8106, 1);
data1 = gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8107, 1);
data2 = gspca_dev->usb_buf[0];
product = (data2 << 8) | data1;
if (vendor != id->idVendor || product != id->idProduct) {
PDEBUG(D_PROBE, "Bad vendor / product from device");
return -EINVAL;
}
switch (product) {
case 0x0928:
case 0x0929:
case 0x092a:
case 0x092b:
case 0x092c:
case 0x092d:
case 0x092e:
case 0x092f:
case 0x403b:
sd->chip_revision = Rev012A;
break;
default:
/* case 0x0561:
case 0x0815: * ?? in spca508.c
case 0x401a:
case 0x7004:
case 0x7e50:
case 0xa001:
case 0xcdee: */
sd->chip_revision = Rev072A;
break;
}
cam = &gspca_dev->cam;
cam->dev_name = (char *) id->driver_info;
cam->epaddr = 0x01;
gspca_dev->nbalt = 7 + 1; /* choose alternate 7 first */
cam->cam_mode = sif_mode;
cam->nmodes = sizeof sif_mode / sizeof sif_mode[0];
sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
sd->autogain = sd_ctrls[SD_AUTOGAIN].qctrl.default_value;
return 0;
}
/* this function is called at open time */
static int sd_open(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
switch (sd->chip_revision) {
case Rev072A:
PDEBUG(D_STREAM, "Chip revision id: 072a");
write_vector(gspca_dev, spca561_init_data);
break;
default:
/* case Rev012A: */
PDEBUG(D_STREAM, "Chip revision id: 012a");
init_161rev12A(gspca_dev);
break;
}
return 0;
}
static void setcontrast(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
struct usb_device *dev = gspca_dev->dev;
__u8 lowb;
int expotimes;
switch (sd->chip_revision) {
case Rev072A:
lowb = sd->contrast >> 8;
reg_w_val(dev, lowb, 0x8651);
reg_w_val(dev, lowb, 0x8652);
reg_w_val(dev, lowb, 0x8653);
reg_w_val(dev, lowb, 0x8654);
break;
case Rev012A: {
__u8 Reg8391[] =
{ 0x00, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00 };
/* Write camera sensor settings */
expotimes = (sd->contrast >> 5) & 0x07ff;
Reg8391[0] = expotimes & 0xff; /* exposure */
Reg8391[1] = 0x18 | (expotimes >> 8);
Reg8391[2] = sd->brightness; /* gain */
reg_w_buf(gspca_dev, 0x8391, Reg8391, 8);
reg_w_buf(gspca_dev, 0x8390, Reg8391, 8);
break;
}
}
}
static void sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
struct usb_device *dev = gspca_dev->dev;
int Clck;
__u8 Reg8307[] = { 0xaa, 0x00 };
int mode;
mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
switch (sd->chip_revision) {
case Rev072A:
switch (mode) {
default:
/* case 0:
case 1: */
Clck = 0x25;
break;
case 2:
Clck = 0x22;
break;
case 3:
Clck = 0x21;
break;
}
reg_w_val(dev, 0x8500, mode); /* mode */
reg_w_val(dev, 0x8700, Clck); /* 0x27 clock */
reg_w_val(dev, 0x8112, 0x10 | 0x20);
break;
default:
/* case Rev012A: */
switch (mode) {
case 0:
case 1:
Clck = 0x8a;
break;
case 2:
Clck = 0x85;
break;
default:
Clck = 0x83;
break;
}
if (mode <= 1) {
/* Use compression on 320x240 and above */
reg_w_val(dev, 0x8500, 0x10 | mode);
} else {
/* I couldn't get the compression to work below 320x240
* Fortunately at these resolutions the bandwidth
* is sufficient to push raw frames at ~20fps */
reg_w_val(dev, 0x8500, mode);
} /* -- qq@kuku.eu.org */
reg_w_buf(gspca_dev, 0x8307, Reg8307, 2);
reg_w_val(gspca_dev->dev, 0x8700, Clck);
/* 0x8f 0x85 0x27 clock */
reg_w_val(gspca_dev->dev, 0x8112, 0x1e | 0x20);
reg_w_val(gspca_dev->dev, 0x850b, 0x03);
setcontrast(gspca_dev);
break;
}
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
reg_w_val(gspca_dev->dev, 0x8112, 0x20);
}
static void sd_stop0(struct gspca_dev *gspca_dev)
{
}
/* this function is called at close time */
static void sd_close(struct gspca_dev *gspca_dev)
{
reg_w_val(gspca_dev->dev, 0x8114, 0);
}
static void setautogain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int expotimes = 0;
int pixelclk = 0;
int gainG = 0;
__u8 R, Gr, Gb, B;
int y;
__u8 luma_mean = 110;
__u8 luma_delta = 20;
__u8 spring = 4;
switch (sd->chip_revision) {
case Rev072A:
reg_r(gspca_dev, 0x8621, 1);
Gr = gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8622, 1);
R = gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8623, 1);
B = gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8624, 1);
Gb = gspca_dev->usb_buf[0];
y = (77 * R + 75 * (Gr + Gb) + 29 * B) >> 8;
/* u= (128*B-(43*(Gr+Gb+R))) >> 8; */
/* v= (128*R-(53*(Gr+Gb))-21*B) >> 8; */
/* PDEBUG(D_CONF,"reading Y %d U %d V %d ",y,u,v); */
if (y < luma_mean - luma_delta ||
y > luma_mean + luma_delta) {
expotimes = i2c_read(gspca_dev, 0x09, 0x10);
pixelclk = 0x0800;
expotimes = expotimes & 0x07ff;
/* PDEBUG(D_PACK,
"Exposition Times 0x%03X Clock 0x%04X ",
expotimes,pixelclk); */
gainG = i2c_read(gspca_dev, 0x35, 0x10);
/* PDEBUG(D_PACK,
"reading Gain register %d", gainG); */
expotimes += (luma_mean - y) >> spring;
gainG += (luma_mean - y) / 50;
/* PDEBUG(D_PACK,
"compute expotimes %d gain %d",
expotimes,gainG); */
if (gainG > 0x3f)
gainG = 0x3f;
else if (gainG < 4)
gainG = 3;
i2c_write(gspca_dev, gainG, 0x35);
if (expotimes >= 0x0256)
expotimes = 0x0256;
else if (expotimes < 4)
expotimes = 3;
i2c_write(gspca_dev, expotimes | pixelclk, 0x09);
}
break;
case Rev012A:
/* sensor registers is access and memory mapped to 0x8300 */
/* readind all 0x83xx block the sensor */
/*
* The data from the header seem wrong where is the luma
* and chroma mean value
* at the moment set exposure in contrast set
*/
break;
}
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
__u8 *data, /* isoc packet */
int len) /* iso packet length */
{
struct sd *sd = (struct sd *) gspca_dev;
switch (data[0]) {
case 0: /* start of frame */
frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
data, 0);
if (sd->ag_cnt >= 0) {
if (--sd->ag_cnt < 0) {
sd->ag_cnt = AG_CNT_START;
setautogain(gspca_dev);
}
}
data += SPCA561_OFFSET_DATA;
len -= SPCA561_OFFSET_DATA;
if (data[1] & 0x10) {
/* compressed bayer */
gspca_frame_add(gspca_dev, FIRST_PACKET,
frame, data, len);
} else {
/* raw bayer (with a header, which we skip) */
data += 20;
len -= 20;
gspca_frame_add(gspca_dev, FIRST_PACKET,
frame, data, len);
}
return;
case 0xff: /* drop */
/* gspca_dev->last_packet_type = DISCARD_PACKET; */
return;
}
data++;
len--;
gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}
static void setbrightness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
__u8 value;
switch (sd->chip_revision) {
case Rev072A:
value = sd->brightness;
reg_w_val(gspca_dev->dev, value, 0x8611);
reg_w_val(gspca_dev->dev, value, 0x8612);
reg_w_val(gspca_dev->dev, value, 0x8613);
reg_w_val(gspca_dev->dev, value, 0x8614);
break;
default:
/* case Rev012A: */
setcontrast(gspca_dev);
break;
}
}
static void getbrightness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
__u16 tot;
switch (sd->chip_revision) {
case Rev072A:
tot = 0;
reg_r(gspca_dev, 0x8611, 1);
tot += gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8612, 1);
tot += gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8613, 1);
tot += gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8614, 1);
tot += gspca_dev->usb_buf[0];
sd->brightness = tot >> 2;
break;
default:
/* case Rev012A: */
/* no way to read sensor settings */
break;
}
}
static void getcontrast(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
__u16 tot;
switch (sd->chip_revision) {
case Rev072A:
tot = 0;
reg_r(gspca_dev, 0x8651, 1);
tot += gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8652, 1);
tot += gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8653, 1);
tot += gspca_dev->usb_buf[0];
reg_r(gspca_dev, 0x8654, 1);
tot += gspca_dev->usb_buf[0];
sd->contrast = tot << 6;
break;
default:
/* case Rev012A: */
/* no way to read sensor settings */
break;
}
PDEBUG(D_CONF, "get contrast %d", sd->contrast);
}
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)
setbrightness(gspca_dev);
return 0;
}
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
getbrightness(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)
setcontrast(gspca_dev);
return 0;
}
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
getcontrast(gspca_dev);
*val = sd->contrast;
return 0;
}
static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->autogain = val;
if (val)
sd->ag_cnt = AG_CNT_START;
else
sd->ag_cnt = -1;
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,
.open = sd_open,
.start = sd_start,
.stopN = sd_stopN,
.stop0 = sd_stop0,
.close = sd_close,
.pkt_scan = sd_pkt_scan,
};
/* -- module initialisation -- */
#define DVNM(name) .driver_info = (kernel_ulong_t) name
static const __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x041e, 0x401a), DVNM("Creative Webcam Vista (PD1100)")},
{USB_DEVICE(0x041e, 0x403b), DVNM("Creative Webcam Vista (VF0010)")},
{USB_DEVICE(0x0458, 0x7004), DVNM("Genius VideoCAM Express V2")},
{USB_DEVICE(0x046d, 0x0928), DVNM("Logitech QC Express Etch2")},
{USB_DEVICE(0x046d, 0x0929), DVNM("Labtec Webcam Elch2")},
{USB_DEVICE(0x046d, 0x092a), DVNM("Logitech QC for Notebook")},
{USB_DEVICE(0x046d, 0x092b), DVNM("Labtec Webcam Plus")},
{USB_DEVICE(0x046d, 0x092c), DVNM("Logitech QC chat Elch2")},
{USB_DEVICE(0x046d, 0x092d), DVNM("Logitech QC Elch2")},
{USB_DEVICE(0x046d, 0x092e), DVNM("Logitech QC Elch2")},
{USB_DEVICE(0x046d, 0x092f), DVNM("Logitech QC Elch2")},
{USB_DEVICE(0x04fc, 0x0561), DVNM("Flexcam 100")},
{USB_DEVICE(0x060b, 0xa001), DVNM("Maxell Compact Pc PM3")},
{USB_DEVICE(0x10fd, 0x7e50), DVNM("FlyCam Usb 100")},
{USB_DEVICE(0xabcd, 0xcdee), DVNM("Petcam")},
{}
};
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,
};
/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
if (usb_register(&sd_driver) < 0)
return -1;
PDEBUG(D_PROBE, "v%s registered", version);
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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