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linux/drivers/media/video/gspca/tv8532.c
Jean-Francois Moine 2e0903b001 V4L/DVB (9552): gspca: Simplify the ISOC packet scanning in tv8532. 
This patch
- makes unuseful the temporary buffers
- and also fixes the bad colors problem.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-29 17:53:29 -02:00

587 lines
17 KiB
C
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/*
* Quickcam cameras initialization data
*
* 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 "tv8532"
#include "gspca.h"
MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("TV8532 USB Camera Driver");
MODULE_LICENSE("GPL");
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
__u16 brightness;
__u16 contrast;
__u8 packet;
};
/* 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 struct ctrl sd_ctrls[] = {
#define SD_BRIGHTNESS 0
{
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
.minimum = 1,
.maximum = 0x2ff,
.step = 1,
.default_value = 0x18f,
},
.set = sd_setbrightness,
.get = sd_getbrightness,
},
#define SD_CONTRAST 1
{
{
.id = V4L2_CID_CONTRAST,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 0xffff,
.step = 1,
.default_value = 0x7fff,
},
.set = sd_setcontrast,
.get = sd_getcontrast,
},
};
static struct v4l2_pix_format sif_mode[] = {
{176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
.bytesperline = 176,
.sizeimage = 176 * 144,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 1},
{352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
.bytesperline = 352,
.sizeimage = 352 * 288,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0},
};
/*
* Initialization data: this is the first set-up data written to the
* device (before the open data).
*/
#define TESTCLK 0x10 /* reg 0x2c -> 0x12 //10 */
#define TESTCOMP 0x90 /* reg 0x28 -> 0x80 */
#define TESTLINE 0x81 /* reg 0x29 -> 0x81 */
#define QCIFLINE 0x41 /* reg 0x29 -> 0x81 */
#define TESTPTL 0x14 /* reg 0x2D -> 0x14 */
#define TESTPTH 0x01 /* reg 0x2E -> 0x01 */
#define TESTPTBL 0x12 /* reg 0x2F -> 0x0a */
#define TESTPTBH 0x01 /* reg 0x30 -> 0x01 */
#define ADWIDTHL 0xe8 /* reg 0x0c -> 0xe8 */
#define ADWIDTHH 0x03 /* reg 0x0d -> 0x03 */
#define ADHEIGHL 0x90 /* reg 0x0e -> 0x91 //93 */
#define ADHEIGHH 0x01 /* reg 0x0f -> 0x01 */
#define EXPOL 0x8f /* reg 0x1c -> 0x8f */
#define EXPOH 0x01 /* reg 0x1d -> 0x01 */
#define ADCBEGINL 0x44 /* reg 0x10 -> 0x46 //47 */
#define ADCBEGINH 0x00 /* reg 0x11 -> 0x00 */
#define ADRBEGINL 0x0a /* reg 0x14 -> 0x0b //0x0c */
#define ADRBEGINH 0x00 /* reg 0x15 -> 0x00 */
#define TV8532_CMD_UPDATE 0x84
#define TV8532_EEprom_Add 0x03
#define TV8532_EEprom_DataL 0x04
#define TV8532_EEprom_DataM 0x05
#define TV8532_EEprom_DataH 0x06
#define TV8532_EEprom_TableLength 0x07
#define TV8532_EEprom_Write 0x08
#define TV8532_PART_CTRL 0x00
#define TV8532_CTRL 0x01
#define TV8532_CMD_EEprom_Open 0x30
#define TV8532_CMD_EEprom_Close 0x29
#define TV8532_UDP_UPDATE 0x31
#define TV8532_GPIO 0x39
#define TV8532_GPIO_OE 0x3B
#define TV8532_REQ_RegWrite 0x02
#define TV8532_REQ_RegRead 0x03
#define TV8532_ADWIDTH_L 0x0C
#define TV8532_ADWIDTH_H 0x0D
#define TV8532_ADHEIGHT_L 0x0E
#define TV8532_ADHEIGHT_H 0x0F
#define TV8532_EXPOSURE 0x1C
#define TV8532_QUANT_COMP 0x28
#define TV8532_MODE_PACKET 0x29
#define TV8532_SETCLK 0x2C
#define TV8532_POINT_L 0x2D
#define TV8532_POINT_H 0x2E
#define TV8532_POINTB_L 0x2F
#define TV8532_POINTB_H 0x30
#define TV8532_BUDGET_L 0x2A
#define TV8532_BUDGET_H 0x2B
#define TV8532_VID_L 0x34
#define TV8532_VID_H 0x35
#define TV8532_PID_L 0x36
#define TV8532_PID_H 0x37
#define TV8532_DeviceID 0x83
#define TV8532_AD_SLOPE 0x91
#define TV8532_AD_BITCTRL 0x94
#define TV8532_AD_COLBEGIN_L 0x10
#define TV8532_AD_COLBEGIN_H 0x11
#define TV8532_AD_ROWBEGIN_L 0x14
#define TV8532_AD_ROWBEGIN_H 0x15
static const __u32 tv_8532_eeprom_data[] = {
/* add dataL dataM dataH */
0x00010001, 0x01018011, 0x02050014, 0x0305001c,
0x040d001e, 0x0505001f, 0x06050519, 0x0705011b,
0x0805091e, 0x090d892e, 0x0a05892f, 0x0b050dd9,
0x0c0509f1, 0
};
static int reg_r(struct gspca_dev *gspca_dev,
__u16 index)
{
usb_control_msg(gspca_dev->dev,
usb_rcvctrlpipe(gspca_dev->dev, 0),
TV8532_REQ_RegRead,
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, 1,
500);
return gspca_dev->usb_buf[0];
}
/* write 1 byte */
static void reg_w_1(struct gspca_dev *gspca_dev,
__u16 index, __u8 value)
{
gspca_dev->usb_buf[0] = value;
usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
TV8532_REQ_RegWrite,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, 1, 500);
}
/* write 2 bytes */
static void reg_w_2(struct gspca_dev *gspca_dev,
__u16 index, __u8 val1, __u8 val2)
{
gspca_dev->usb_buf[0] = val1;
gspca_dev->usb_buf[1] = val2;
usb_control_msg(gspca_dev->dev,
usb_sndctrlpipe(gspca_dev->dev, 0),
TV8532_REQ_RegWrite,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, /* value */
index, gspca_dev->usb_buf, 2, 500);
}
static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
{
int i = 0;
__u8 reg, data0, data1, data2;
reg_w_1(gspca_dev, TV8532_GPIO, 0xb0);
reg_w_1(gspca_dev, TV8532_CTRL, TV8532_CMD_EEprom_Open);
/* msleep(1); */
while (tv_8532_eeprom_data[i]) {
reg = (tv_8532_eeprom_data[i] & 0xff000000) >> 24;
reg_w_1(gspca_dev, TV8532_EEprom_Add, reg);
/* msleep(1); */
data0 = (tv_8532_eeprom_data[i] & 0x000000ff);
reg_w_1(gspca_dev, TV8532_EEprom_DataL, data0);
/* msleep(1); */
data1 = (tv_8532_eeprom_data[i] & 0x0000ff00) >> 8;
reg_w_1(gspca_dev, TV8532_EEprom_DataM, data1);
/* msleep(1); */
data2 = (tv_8532_eeprom_data[i] & 0x00ff0000) >> 16;
reg_w_1(gspca_dev, TV8532_EEprom_DataH, data2);
/* msleep(1); */
reg_w_1(gspca_dev, TV8532_EEprom_Write, 0);
/* msleep(10); */
i++;
}
reg_w_1(gspca_dev, TV8532_EEprom_TableLength, i);
/* msleep(1); */
reg_w_1(gspca_dev, TV8532_CTRL, TV8532_CMD_EEprom_Close);
msleep(10);
}
/* 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;
tv_8532WriteEEprom(gspca_dev);
cam = &gspca_dev->cam;
cam->epaddr = 1;
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;
return 0;
}
static void tv_8532ReadRegisters(struct gspca_dev *gspca_dev)
{
__u8 data;
data = reg_r(gspca_dev, 0x0001);
PDEBUG(D_USBI, "register 0x01-> %x", data);
data = reg_r(gspca_dev, 0x0002);
PDEBUG(D_USBI, "register 0x02-> %x", data);
reg_r(gspca_dev, TV8532_ADWIDTH_L);
reg_r(gspca_dev, TV8532_ADWIDTH_H);
reg_r(gspca_dev, TV8532_QUANT_COMP);
reg_r(gspca_dev, TV8532_MODE_PACKET);
reg_r(gspca_dev, TV8532_SETCLK);
reg_r(gspca_dev, TV8532_POINT_L);
reg_r(gspca_dev, TV8532_POINT_H);
reg_r(gspca_dev, TV8532_POINTB_L);
reg_r(gspca_dev, TV8532_POINTB_H);
reg_r(gspca_dev, TV8532_BUDGET_L);
reg_r(gspca_dev, TV8532_BUDGET_H);
reg_r(gspca_dev, TV8532_VID_L);
reg_r(gspca_dev, TV8532_VID_H);
reg_r(gspca_dev, TV8532_PID_L);
reg_r(gspca_dev, TV8532_PID_H);
reg_r(gspca_dev, TV8532_DeviceID);
reg_r(gspca_dev, TV8532_AD_COLBEGIN_L);
reg_r(gspca_dev, TV8532_AD_COLBEGIN_H);
reg_r(gspca_dev, TV8532_AD_ROWBEGIN_L);
reg_r(gspca_dev, TV8532_AD_ROWBEGIN_H);
}
static void tv_8532_setReg(struct gspca_dev *gspca_dev)
{
reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_L,
ADCBEGINL); /* 0x10 */
reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_H,
ADCBEGINH); /* also digital gain */
reg_w_1(gspca_dev, TV8532_PART_CTRL,
TV8532_CMD_UPDATE); /* 0x00<-0x84 */
reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0a);
/******************************************************/
reg_w_1(gspca_dev, TV8532_ADHEIGHT_L, ADHEIGHL); /* 0e */
reg_w_1(gspca_dev, TV8532_ADHEIGHT_H, ADHEIGHH); /* 0f */
reg_w_2(gspca_dev, TV8532_EXPOSURE,
EXPOL, EXPOH); /* 350d 0x014c; 1c */
reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_L,
ADCBEGINL); /* 0x10 */
reg_w_1(gspca_dev, TV8532_AD_COLBEGIN_H,
ADCBEGINH); /* also digital gain */
reg_w_1(gspca_dev, TV8532_AD_ROWBEGIN_L,
ADRBEGINL); /* 0x14 */
reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x00); /* 0x91 */
reg_w_1(gspca_dev, TV8532_AD_BITCTRL, 0x02); /* 0x94 */
reg_w_1(gspca_dev, TV8532_CTRL,
TV8532_CMD_EEprom_Close); /* 0x01 */
reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x00); /* 0x91 */
reg_w_1(gspca_dev, TV8532_PART_CTRL,
TV8532_CMD_UPDATE); /* 0x00<-0x84 */
}
static void tv_8532_PollReg(struct gspca_dev *gspca_dev)
{
int i;
/* strange polling from tgc */
for (i = 0; i < 10; i++) {
reg_w_1(gspca_dev, TV8532_SETCLK,
TESTCLK); /* 0x48; //0x08; 0x2c */
reg_w_1(gspca_dev, TV8532_PART_CTRL, TV8532_CMD_UPDATE);
reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x01); /* 0x31 */
}
}
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x32);
reg_w_1(gspca_dev, TV8532_AD_BITCTRL, 0x00);
tv_8532ReadRegisters(gspca_dev);
reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
reg_w_2(gspca_dev, TV8532_ADHEIGHT_L, ADHEIGHL,
ADHEIGHH); /* 401d 0x0169; 0e */
reg_w_2(gspca_dev, TV8532_EXPOSURE, EXPOL,
EXPOH); /* 350d 0x014c; 1c */
reg_w_1(gspca_dev, TV8532_ADWIDTH_L, ADWIDTHL); /* 0x20; 0x0c */
reg_w_1(gspca_dev, TV8532_ADWIDTH_H, ADWIDTHH); /* 0x0d */
/*******************************************************************/
reg_w_1(gspca_dev, TV8532_QUANT_COMP,
TESTCOMP); /* 0x72 compressed mode 0x28 */
reg_w_1(gspca_dev, TV8532_MODE_PACKET,
TESTLINE); /* 0x84; // CIF | 4 packet 0x29 */
/************************************************/
reg_w_1(gspca_dev, TV8532_SETCLK,
TESTCLK); /* 0x48; //0x08; 0x2c */
reg_w_1(gspca_dev, TV8532_POINT_L,
TESTPTL); /* 0x38; 0x2d */
reg_w_1(gspca_dev, TV8532_POINT_H,
TESTPTH); /* 0x04; 0x2e */
reg_w_1(gspca_dev, TV8532_POINTB_L,
TESTPTBL); /* 0x04; 0x2f */
reg_w_1(gspca_dev, TV8532_POINTB_H,
TESTPTBH); /* 0x04; 0x30 */
reg_w_1(gspca_dev, TV8532_PART_CTRL,
TV8532_CMD_UPDATE); /* 0x00<-0x84 */
/*************************************************/
reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x01); /* 0x31 */
msleep(200);
reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x00); /* 0x31 */
/*************************************************/
tv_8532_setReg(gspca_dev);
/*************************************************/
reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
/*************************************************/
tv_8532_setReg(gspca_dev);
/*************************************************/
tv_8532_PollReg(gspca_dev);
return 0;
}
static void setbrightness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int brightness = sd->brightness;
reg_w_2(gspca_dev, TV8532_EXPOSURE,
brightness >> 8, brightness); /* 1c */
reg_w_1(gspca_dev, TV8532_PART_CTRL, TV8532_CMD_UPDATE);
}
/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
reg_w_1(gspca_dev, TV8532_AD_SLOPE, 0x32);
reg_w_1(gspca_dev, TV8532_AD_BITCTRL, 0x00);
tv_8532ReadRegisters(gspca_dev);
reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
reg_w_2(gspca_dev, TV8532_ADHEIGHT_L,
ADHEIGHL, ADHEIGHH); /* 401d 0x0169; 0e */
/* reg_w_2(gspca_dev, TV8532_EXPOSURE,
EXPOL, EXPOH); * 350d 0x014c; 1c */
setbrightness(gspca_dev);
reg_w_1(gspca_dev, TV8532_ADWIDTH_L, ADWIDTHL); /* 0x20; 0x0c */
reg_w_1(gspca_dev, TV8532_ADWIDTH_H, ADWIDTHH); /* 0x0d */
/************************************************/
reg_w_1(gspca_dev, TV8532_QUANT_COMP,
TESTCOMP); /* 0x72 compressed mode 0x28 */
if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
/* 176x144 */
reg_w_1(gspca_dev, TV8532_MODE_PACKET,
QCIFLINE); /* 0x84; // CIF | 4 packet 0x29 */
} else {
/* 352x288 */
reg_w_1(gspca_dev, TV8532_MODE_PACKET,
TESTLINE); /* 0x84; // CIF | 4 packet 0x29 */
}
/************************************************/
reg_w_1(gspca_dev, TV8532_SETCLK,
TESTCLK); /* 0x48; //0x08; 0x2c */
reg_w_1(gspca_dev, TV8532_POINT_L,
TESTPTL); /* 0x38; 0x2d */
reg_w_1(gspca_dev, TV8532_POINT_H,
TESTPTH); /* 0x04; 0x2e */
reg_w_1(gspca_dev, TV8532_POINTB_L,
TESTPTBL); /* 0x04; 0x2f */
reg_w_1(gspca_dev, TV8532_POINTB_H,
TESTPTBH); /* 0x04; 0x30 */
reg_w_1(gspca_dev, TV8532_PART_CTRL,
TV8532_CMD_UPDATE); /* 0x00<-0x84 */
/************************************************/
reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x01); /* 0x31 */
msleep(200);
reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x00); /* 0x31 */
/************************************************/
tv_8532_setReg(gspca_dev);
/************************************************/
reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
/************************************************/
tv_8532_setReg(gspca_dev);
/************************************************/
tv_8532_PollReg(gspca_dev);
reg_w_1(gspca_dev, TV8532_UDP_UPDATE, 0x00); /* 0x31 */
gspca_dev->empty_packet = 0; /* check the empty packets */
sd->packet = 0; /* ignore the first packets */
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
reg_w_1(gspca_dev, TV8532_GPIO_OE, 0x0b);
}
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;
int packet_type0, packet_type1;
packet_type0 = packet_type1 = INTER_PACKET;
if (gspca_dev->empty_packet) {
gspca_dev->empty_packet = 0;
sd->packet = gspca_dev->height / 2;
packet_type0 = FIRST_PACKET;
} else if (sd->packet == 0)
return; /* 2 more lines in 352x288 ! */
sd->packet--;
if (sd->packet == 0)
packet_type1 = LAST_PACKET;
/* each packet contains:
* - header 2 bytes
* - RG line
* - 4 bytes
* - GB line
* - 4 bytes
*/
gspca_frame_add(gspca_dev, packet_type0,
frame, data + 2, gspca_dev->width);
gspca_frame_add(gspca_dev, packet_type1,
frame, data + gspca_dev->width + 6, gspca_dev->width);
}
static void setcontrast(struct gspca_dev *gspca_dev)
{
}
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;
*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;
*val = sd->contrast;
return 0;
}
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
.ctrls = sd_ctrls,
.nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,
};
/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
{USB_DEVICE(0x046d, 0x0920)},
{USB_DEVICE(0x046d, 0x0921)},
{USB_DEVICE(0x0545, 0x808b)},
{USB_DEVICE(0x0545, 0x8333)},
{USB_DEVICE(0x0923, 0x010f)},
{}
};
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)
{
if (usb_register(&sd_driver) < 0)
return -1;
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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