V4L/DVB (8157): gspca: all subdrivers

- remaning subdrivers added
- remove the decoding helper and some specific frame decodings

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 709 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/tv8532.c b/drivers/media/video/gspca/tv8532.c
new file mode 100644
index 00000000000..6218441ba1f
--- /dev/null
+++ b/drivers/media/video/gspca/tv8532.c
@@ -0,0 +1,709 @@
+/*
+ * 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"
+
+#define DRIVER_VERSION_NUMBER	KERNEL_VERSION(2, 1, 0)
+static const char version[] = "2.1.0";
+
+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 */
+
+	int buflen;			/* current length of tmpbuf */
+	__u8 tmpbuf[352 * 288 + 10 * 288];	/* no protection... */
+	__u8 tmpbuf2[352 * 288];		/* no protection... */
+
+	unsigned short brightness;
+	unsigned short contrast;
+
+	char packet;
+	char synchro;
+};
+
+/* 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 cam_mode sif_mode[] = {
+	{V4L2_PIX_FMT_SBGGR8, 176, 144, 1},
+	{V4L2_PIX_FMT_SBGGR8, 352, 288, 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 __u32 tv_8532_eeprom_data[] = {
+/*	add		dataL	   dataM	dataH */
+	0x00010001, 0x01018011, 0x02050014, 0x0305001c,
+	0x040d001e, 0x0505001f, 0x06050519, 0x0705011b,
+	0x0805091e, 0x090d892e, 0x0a05892f, 0x0b050dd9,
+	0x0c0509f1, 0
+};
+
+static void reg_r(struct usb_device *dev,
+		  __u16 index, __u8 *buffer)
+{
+	usb_control_msg(dev,
+			usb_rcvctrlpipe(dev, 0),
+			TV8532_REQ_RegRead,
+			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			0,	/* value */
+			index, buffer, sizeof(__u8),
+			500);
+}
+
+static void reg_w(struct usb_device *dev,
+		  __u16 index, __u8 *buffer, __u16 length)
+{
+	usb_control_msg(dev,
+			usb_sndctrlpipe(dev, 0),
+			TV8532_REQ_RegWrite,
+			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			0,	/* value */
+			index, buffer, length, 500);
+}
+
+static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
+{
+	int i = 0;
+	__u8 reg, data0, data1, data2, datacmd;
+	struct usb_device *dev = gspca_dev->dev;
+
+	datacmd = 0xb0;;
+	reg_w(dev, TV8532_GPIO, &datacmd, 1);
+	datacmd = TV8532_CMD_EEprom_Open;
+	reg_w(dev, TV8532_CTRL, &datacmd,
+			1);
+/*	msleep(1); */
+	while (tv_8532_eeprom_data[i]) {
+		reg = (tv_8532_eeprom_data[i] & 0xff000000) >> 24;
+		reg_w(dev, TV8532_EEprom_Add, &reg, 1);
+		/* msleep(1); */
+		data0 = (tv_8532_eeprom_data[i] & 0x000000ff);
+		reg_w(dev, TV8532_EEprom_DataL, &data0, 1);
+		/* msleep(1); */
+		data1 = (tv_8532_eeprom_data[i] & 0x0000FF00) >> 8;
+		reg_w(dev, TV8532_EEprom_DataM, &data1, 1);
+		/* msleep(1); */
+		data2 = (tv_8532_eeprom_data[i] & 0x00FF0000) >> 16;
+		reg_w(dev, TV8532_EEprom_DataH, &data2, 1);
+		/* msleep(1); */
+		datacmd = 0;
+		reg_w(dev, TV8532_EEprom_Write, &datacmd, 1);
+		/* msleep(10); */
+		i++;
+	}
+	datacmd = i;
+	reg_w(dev, TV8532_EEprom_TableLength, &datacmd, 1);
+/*	msleep(1); */
+	datacmd = TV8532_CMD_EEprom_Close;
+	reg_w(dev, TV8532_CTRL, &datacmd, 1);
+	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->dev_name = (char *) id->driver_info;
+	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)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	__u8 data = 0;
+/*	__u16 vid, pid; */
+
+	reg_r(dev, 0x0001, &data);
+	PDEBUG(D_USBI, "register 0x01-> %x", data);
+	reg_r(dev, 0x0002, &data);
+	PDEBUG(D_USBI, "register 0x02-> %x", data);
+	reg_r(dev, TV8532_ADWIDTH_L, &data);
+	reg_r(dev, TV8532_ADWIDTH_H, &data);
+	reg_r(dev, TV8532_QUANT_COMP, &data);
+	reg_r(dev, TV8532_MODE_PACKET, &data);
+	reg_r(dev, TV8532_SETCLK, &data);
+	reg_r(dev, TV8532_POINT_L, &data);
+	reg_r(dev, TV8532_POINT_H, &data);
+	reg_r(dev, TV8532_POINTB_L, &data);
+	reg_r(dev, TV8532_POINTB_H, &data);
+	reg_r(dev, TV8532_BUDGET_L, &data);
+	reg_r(dev, TV8532_BUDGET_H, &data);
+	reg_r(dev, TV8532_VID_L, &data);
+	reg_r(dev, TV8532_VID_H, &data);
+	reg_r(dev, TV8532_PID_L, &data);
+	reg_r(dev, TV8532_PID_H, &data);
+	reg_r(dev, TV8532_DeviceID, &data);
+	reg_r(dev, TV8532_AD_COLBEGIN_L, &data);
+	reg_r(dev, TV8532_AD_COLBEGIN_H, &data);
+	reg_r(dev, TV8532_AD_ROWBEGIN_L, &data);
+	reg_r(dev, TV8532_AD_ROWBEGIN_H, &data);
+}
+
+static void tv_8532_setReg(struct gspca_dev *gspca_dev)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	__u8 data = 0;
+	__u8 value[2] = { 0, 0 };
+
+	data = ADCBEGINL;
+	reg_w(dev, TV8532_AD_COLBEGIN_L, &data, 1);	/* 0x10 */
+	data = ADCBEGINH;	/* also digital gain */
+	reg_w(dev, TV8532_AD_COLBEGIN_H, &data, 1);
+	data = TV8532_CMD_UPDATE;
+	reg_w(dev, TV8532_PART_CTRL, &data, 1);	/* 0x00<-0x84 */
+
+	data = 0x0a;
+	reg_w(dev, TV8532_GPIO_OE, &data, 1);
+	/******************************************************/
+	data = ADHEIGHL;
+	reg_w(dev, TV8532_ADHEIGHT_L, &data, 1);	/* 0e */
+	data = ADHEIGHH;
+	reg_w(dev, TV8532_ADHEIGHT_H, &data, 1);	/* 0f */
+	value[0] = EXPOL;
+	value[1] = EXPOH;	/* 350d 0x014c; */
+	reg_w(dev, TV8532_EXPOSURE, value, 2);	/* 1c */
+	data = ADCBEGINL;
+	reg_w(dev, TV8532_AD_COLBEGIN_L, &data, 1);	/* 0x10 */
+	data = ADCBEGINH;	/* also digital gain */
+	reg_w(dev, TV8532_AD_COLBEGIN_H, &data, 1);
+	data = ADRBEGINL;
+	reg_w(dev, TV8532_AD_ROWBEGIN_L, &data, 1);	/* 0x14 */
+
+	data = 0x00;
+	reg_w(dev, TV8532_AD_SLOPE, &data, 1);	/* 0x91 */
+	data = 0x02;
+	reg_w(dev, TV8532_AD_BITCTRL, &data, 1);	/* 0x94 */
+
+
+	data = TV8532_CMD_EEprom_Close;
+	reg_w(dev, TV8532_CTRL, &data, 1);	/* 0x01 */
+
+	data = 0x00;
+	reg_w(dev, TV8532_AD_SLOPE, &data, 1);	/* 0x91 */
+	data = TV8532_CMD_UPDATE;
+	reg_w(dev, TV8532_PART_CTRL, &data, 1);	/* 0x00<-0x84 */
+}
+
+static void tv_8532_PollReg(struct gspca_dev *gspca_dev)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	__u8 data = 0;
+	int i;
+
+	/* strange polling from tgc */
+	for (i = 0; i < 10; i++) {
+		data = TESTCLK;	/* 0x48; //0x08; */
+		reg_w(dev, TV8532_SETCLK, &data, 1);	/* 0x2c */
+		data = TV8532_CMD_UPDATE;
+		reg_w(dev, TV8532_PART_CTRL, &data, 1);
+		data = 0x01;
+		reg_w(dev, TV8532_UDP_UPDATE, &data, 1);	/* 0x31 */
+	}
+}
+
+/* this function is called at open time */
+static int sd_open(struct gspca_dev *gspca_dev)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	__u8 data = 0;
+	__u8 dataStart = 0;
+	__u8 value[2] = { 0, 0 };
+
+	data = 0x32;
+	reg_w(dev, TV8532_AD_SLOPE, &data, 1);
+	data = 0;
+	reg_w(dev, TV8532_AD_BITCTRL, &data, 1);
+	tv_8532ReadRegisters(gspca_dev);
+	data = 0x0b;
+	reg_w(dev, TV8532_GPIO_OE, &data, 1);
+	value[0] = ADHEIGHL;
+	value[1] = ADHEIGHH;	/* 401d 0x0169; */
+	reg_w(dev, TV8532_ADHEIGHT_L, value, 2);	/* 0e */
+	value[0] = EXPOL;
+	value[1] = EXPOH;	/* 350d 0x014c; */
+	reg_w(dev, TV8532_EXPOSURE, value, 2);	/* 1c */
+	data = ADWIDTHL;	/* 0x20; */
+	reg_w(dev, TV8532_ADWIDTH_L, &data, 1);	/* 0x0c */
+	data = ADWIDTHH;
+	reg_w(dev, TV8532_ADWIDTH_H, &data, 1);	/* 0x0d */
+
+	/*******************************************************************/
+	data = TESTCOMP;	/* 0x72 compressed mode */
+	reg_w(dev, TV8532_QUANT_COMP, &data, 1);	/* 0x28 */
+	data = TESTLINE;	/* 0x84; // CIF | 4 packet */
+	reg_w(dev, TV8532_MODE_PACKET, &data, 1);	/* 0x29 */
+
+	/************************************************/
+	data = TESTCLK;		/* 0x48; //0x08; */
+	reg_w(dev, TV8532_SETCLK, &data, 1);	/* 0x2c */
+	data = TESTPTL;		/* 0x38; */
+	reg_w(dev, TV8532_POINT_L, &data, 1);	/* 0x2d */
+	data = TESTPTH;		/* 0x04; */
+	reg_w(dev, TV8532_POINT_H, &data, 1);	/* 0x2e */
+	dataStart = TESTPTBL;	/* 0x04; */
+	reg_w(dev, TV8532_POINTB_L, &dataStart, 1);	/* 0x2f */
+	data = TESTPTBH;	/* 0x04; */
+	reg_w(dev, TV8532_POINTB_H, &data, 1);	/* 0x30 */
+	data = TV8532_CMD_UPDATE;
+	reg_w(dev, TV8532_PART_CTRL, &data, 1);	/* 0x00<-0x84 */
+	/*************************************************/
+	data = 0x01;
+	reg_w(dev, TV8532_UDP_UPDATE, &data, 1);	/* 0x31 */
+	msleep(200);
+	data = 0x00;
+	reg_w(dev, TV8532_UDP_UPDATE, &data, 1);	/* 0x31 */
+	/*************************************************/
+	tv_8532_setReg(gspca_dev);
+	/*************************************************/
+	data = 0x0b;
+	reg_w(dev, TV8532_GPIO_OE, &data,
+			1);
+	/*************************************************/
+	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;
+	__u8 value[2];
+	__u8 data;
+	int brightness = sd->brightness;
+
+	value[1] = (brightness >> 8) & 0xff;
+	value[0] = (brightness) & 0xff;
+	reg_w(gspca_dev->dev, TV8532_EXPOSURE, value, 2);	/* 1c */
+	data = TV8532_CMD_UPDATE;
+	reg_w(gspca_dev->dev, TV8532_PART_CTRL, &data, 1);
+}
+
+/* -- start the camera -- */
+static void sd_start(struct gspca_dev *gspca_dev)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	__u8 data = 0;
+	__u8 dataStart = 0;
+	__u8 value[2];
+
+	data = 0x32;
+	reg_w(dev, TV8532_AD_SLOPE, &data, 1);
+	data = 0;
+	reg_w(dev, TV8532_AD_BITCTRL, &data, 1);
+	tv_8532ReadRegisters(gspca_dev);
+	data = 0x0b;
+	reg_w(dev, TV8532_GPIO_OE, &data, 1);
+	value[0] = ADHEIGHL;
+	value[1] = ADHEIGHH;	/* 401d 0x0169; */
+	reg_w(dev, TV8532_ADHEIGHT_L, value, 2);	/* 0e */
+/*	value[0] = EXPOL; value[1] =EXPOH; 		 * 350d 0x014c; */
+/*	reg_w(dev,TV8532_REQ_RegWrite,0,TV8532_EXPOSURE,value,2);  * 1c */
+	setbrightness(gspca_dev);
+
+	data = ADWIDTHL;	/* 0x20; */
+	reg_w(dev, TV8532_ADWIDTH_L, &data, 1);	/* 0x0c */
+	data = ADWIDTHH;
+	reg_w(dev, TV8532_ADWIDTH_H, &data, 1);	/* 0x0d */
+
+	/************************************************/
+	data = TESTCOMP;	/* 0x72 compressed mode */
+	reg_w(dev, TV8532_QUANT_COMP, &data, 1);	/* 0x28 */
+	if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].mode) {
+		/* 176x144 */
+		data = QCIFLINE;	/* 0x84; // CIF | 4 packet */
+		reg_w(dev, TV8532_MODE_PACKET, &data, 1);	/* 0x29 */
+	} else {
+		/* 352x288 */
+		data = TESTLINE;	/* 0x84; // CIF | 4 packet */
+		reg_w(dev, TV8532_MODE_PACKET, &data, 1);	/* 0x29 */
+	}
+	/************************************************/
+	data = TESTCLK;		/* 0x48; //0x08; */
+	reg_w(dev, TV8532_SETCLK, &data, 1);	/* 0x2c */
+	data = TESTPTL;		/* 0x38; */
+	reg_w(dev, TV8532_POINT_L, &data, 1);	/* 0x2d */
+	data = TESTPTH;		/* 0x04; */
+	reg_w(dev, TV8532_POINT_H, &data, 1);	/* 0x2e */
+	dataStart = TESTPTBL;	/* 0x04; */
+	reg_w(dev, TV8532_POINTB_L, &dataStart, 1);	/* 0x2f */
+	data = TESTPTBH;	/* 0x04; */
+	reg_w(dev, TV8532_POINTB_H, &data, 1);	/* 0x30 */
+	data = TV8532_CMD_UPDATE;
+	reg_w(dev, TV8532_PART_CTRL, &data, 1);	/* 0x00<-0x84 */
+	/************************************************/
+	data = 0x01;
+	reg_w(dev, TV8532_UDP_UPDATE, &data, 1);	/* 0x31 */
+	msleep(200);
+	data = 0x00;
+	reg_w(dev, TV8532_UDP_UPDATE, &data, 1);	/* 0x31 */
+	/************************************************/
+	tv_8532_setReg(gspca_dev);
+	/************************************************/
+	data = 0x0b;
+	reg_w(dev, TV8532_GPIO_OE, &data, 1);
+	/************************************************/
+	tv_8532_setReg(gspca_dev);
+	/************************************************/
+	tv_8532_PollReg(gspca_dev);
+	data = 0x00;
+	reg_w(dev, TV8532_UDP_UPDATE, &data, 1);	/* 0x31 */
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+	struct usb_device *dev = gspca_dev->dev;
+	__u8 data;
+
+	data = 0x0b;
+	reg_w(dev, TV8532_GPIO_OE, &data, 1);
+}
+
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+}
+
+static void sd_close(struct gspca_dev *gspca_dev)
+{
+}
+
+static void tv8532_preprocess(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+/* we should received a whole frame with header and EOL marker
+ * in gspca_dev->tmpbuf and return a GBRG pattern in gspca_dev->tmpbuf2
+ * sequence 2bytes header the Alternate pixels bayer GB 4 bytes
+ * Alternate pixels bayer RG 4 bytes EOL */
+	int width = gspca_dev->width;
+	int height = gspca_dev->height;
+	unsigned char *dst = sd->tmpbuf2;
+	unsigned char *data = sd->tmpbuf;
+	int i;
+
+	/* precompute where is the good bayer line */
+	if (((data[3] + data[width + 7]) >> 1)
+	    + (data[4] >> 2)
+	    + (data[width + 6] >> 1) >= ((data[2] + data[width + 6]) >> 1)
+	    + (data[3] >> 2)
+	    + (data[width + 5] >> 1))
+		data += 3;
+	else
+		data += 2;
+	for (i = 0; i < height / 2; i++) {
+		memcpy(dst, data, width);
+		data += width + 3;
+		dst += width;
+		memcpy(dst, data, width);
+		data += width + 7;
+		dst += width;
+	}
+}
+
+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;
+
+	if (data[0] != 0x80) {
+		sd->packet++;
+		if (sd->buflen + len > sizeof sd->tmpbuf) {
+			if (gspca_dev->last_packet_type != DISCARD_PACKET) {
+				PDEBUG(D_PACK, "buffer overflow");
+				gspca_dev->last_packet_type = DISCARD_PACKET;
+			}
+			return;
+		}
+		memcpy(&sd->tmpbuf[sd->buflen], data, len);
+		sd->buflen += len;
+		return;
+	}
+
+	/* here we detect 0x80 */
+	/* counter is limited so we need few header for a frame :) */
+
+	/* header 0x80 0x80 0x80 0x80 0x80 */
+	/* packet  00   63  127  145  00   */
+	/* sof     0     1   1    0    0   */
+
+	/* update sequence */
+	if (sd->packet == 63 || sd->packet == 127)
+		sd->synchro = 1;
+
+	/* is there a frame start ? */
+	if (sd->packet >= (gspca_dev->height >> 1) - 1) {
+		PDEBUG(D_PACK, "SOF > %d packet %d", sd->synchro,
+		       sd->packet);
+		if (!sd->synchro) {	/* start of frame */
+			if (gspca_dev->last_packet_type == FIRST_PACKET) {
+				tv8532_preprocess(gspca_dev);
+				frame = gspca_frame_add(gspca_dev,
+							LAST_PACKET,
+							frame, sd->tmpbuf2,
+							gspca_dev->width *
+							    gspca_dev->width);
+			}
+			gspca_frame_add(gspca_dev, FIRST_PACKET,
+					frame, data, 0);
+			memcpy(sd->tmpbuf, data, len);
+			sd->buflen = len;
+			sd->packet = 0;
+			return;
+		}
+		if (gspca_dev->last_packet_type != DISCARD_PACKET) {
+			PDEBUG(D_PACK,
+			       "Warning wrong TV8532 frame detection %d",
+			       sd->packet);
+			gspca_dev->last_packet_type = DISCARD_PACKET;
+		}
+		return;
+	}
+
+	if (!sd->synchro) {
+		/* Drop packet frame corrupt */
+		PDEBUG(D_PACK, "DROP SOF %d packet %d",
+		       sd->synchro, sd->packet);
+		sd->packet = 0;
+		gspca_dev->last_packet_type = DISCARD_PACKET;
+		return;
+	}
+	sd->synchro = 1;
+	sd->packet++;
+	memcpy(&sd->tmpbuf[sd->buflen], data, len);
+	sd->buflen += len;
+}
+
+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 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 __devinitdata struct usb_device_id device_table[] = {
+	{USB_DEVICE(0x046d, 0x0920), DVNM("QC Express")},
+	{USB_DEVICE(0x046d, 0x0921), DVNM("Labtec Webcam")},
+	{USB_DEVICE(0x0545, 0x808b), DVNM("Veo Stingray")},
+	{USB_DEVICE(0x0545, 0x8333), DVNM("Veo Stingray")},
+	{USB_DEVICE(0x0923, 0x010f), DVNM("ICM532 cams")},
+	{}
+};
+
+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);