X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmedia%2Fvideo%2Fgspca%2Fpac7311.c;h=d4be51843286dccc0f5af80502e96ca89e42eb19;hb=0cb60efd03ed82d02f44a14594714367e59e8abc;hp=4cc9379ee4110647c5389d88714bdb95941f616c;hpb=6a709749228c5f76f128c69c16f39a52d639bd96;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/media/video/gspca/pac7311.c b/drivers/media/video/gspca/pac7311.c
index 4cc9379ee41..d4be5184328 100644
--- a/drivers/media/video/gspca/pac7311.c
+++ b/drivers/media/video/gspca/pac7311.c
@@ -19,10 +19,39 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
+/* Some documentation about various registers as determined by trial and error.
+   When the register addresses differ between the 7202 and the 7311 the 2
+   different addresses are written as 7302addr/7311addr, when one of the 2
+   addresses is a - sign that register description is not valid for the
+   matching IC.
+
+   Register page 1:
+
+   Address	Description
+   -/0x08	Unknown compressor related, must always be 8 except when not
+		in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !
+   -/0x1b	Auto white balance related, bit 0 is AWB enable (inverted)
+		bits 345 seem to toggle per color gains on/off (inverted)
+   0x78		Global control, bit 6 controls the LED (inverted)
+   -/0x80	JPEG compression ratio ? Best not touched
+
+   Register page 3/4:
+
+   Address	Description
+   0x02		Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on
+		the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
+   -/0x0f	Master gain 1-245, low value = high gain
+   0x10/-	Master gain 0-31
+   -/0x10	Another gain 0-15, limited influence (1-2x gain I guess)
+   0x21		Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
+   -/0x27	Seems to toggle various gains on / off, Setting bit 7 seems to
+		completely disable the analog amplification block. Set to 0x68
+		for max gain, 0x14 for minimal gain.
+*/
+
 #define MODULE_NAME "pac7311"
 
 #include "gspca.h"
-#include "jpeg.h"
 
 MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
 MODULE_DESCRIPTION("Pixart PAC7311");
@@ -32,25 +61,23 @@ MODULE_LICENSE("GPL");
 struct sd {
 	struct gspca_dev gspca_dev;		/* !! must be the first item */
 
-	int lum_sum;
-	atomic_t avg_lum;
-	atomic_t do_gain;
-
 	unsigned char brightness;
 	unsigned char contrast;
 	unsigned char colors;
+	unsigned char gain;
+	unsigned char exposure;
 	unsigned char autogain;
 	__u8 hflip;
 	__u8 vflip;
-	__u8 qindex;
-
-	char tosof;	/* number of bytes before next start of frame */
-	signed char ag_cnt;
-#define AG_CNT_START 13
 
 	__u8 sensor;
 #define SENSOR_PAC7302 0
 #define SENSOR_PAC7311 1
+
+	u8 sof_read;
+	u8 autogain_ignore_frames;
+
+	atomic_t avg_lum;
 };
 
 /* V4L2 controls supported by the driver */
@@ -66,8 +93,14 @@ static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
 
 static struct ctrl sd_ctrls[] = {
+/* This control is pac7302 only */
+#define BRIGHTNESS_IDX 0
 	{
 	    {
 		.id      = V4L2_CID_BRIGHTNESS,
@@ -83,6 +116,7 @@ static struct ctrl sd_ctrls[] = {
 	    .set = sd_setbrightness,
 	    .get = sd_getbrightness,
 	},
+/* This control is for both the 7302 and the 7311 */
 	{
 	    {
 		.id      = V4L2_CID_CONTRAST,
@@ -92,12 +126,14 @@ static struct ctrl sd_ctrls[] = {
 #define CONTRAST_MAX 255
 		.maximum = CONTRAST_MAX,
 		.step    = 1,
-#define CONTRAST_DEF 60
+#define CONTRAST_DEF 127
 		.default_value = CONTRAST_DEF,
 	    },
 	    .set = sd_setcontrast,
 	    .get = sd_getcontrast,
 	},
+/* This control is pac7302 only */
+#define SATURATION_IDX 2
 	{
 	    {
 		.id      = V4L2_CID_SATURATION,
@@ -113,6 +149,39 @@ static struct ctrl sd_ctrls[] = {
 	    .set = sd_setcolors,
 	    .get = sd_getcolors,
 	},
+/* All controls below are for both the 7302 and the 7311 */
+	{
+	    {
+		.id      = V4L2_CID_GAIN,
+		.type    = V4L2_CTRL_TYPE_INTEGER,
+		.name    = "Gain",
+		.minimum = 0,
+#define GAIN_MAX 255
+		.maximum = GAIN_MAX,
+		.step    = 1,
+#define GAIN_DEF 127
+#define GAIN_KNEE 255 /* Gain seems to cause little noise on the pac73xx */
+		.default_value = GAIN_DEF,
+	    },
+	    .set = sd_setgain,
+	    .get = sd_getgain,
+	},
+	{
+	    {
+		.id      = V4L2_CID_EXPOSURE,
+		.type    = V4L2_CTRL_TYPE_INTEGER,
+		.name    = "Exposure",
+		.minimum = 0,
+#define EXPOSURE_MAX 255
+		.maximum = EXPOSURE_MAX,
+		.step    = 1,
+#define EXPOSURE_DEF  16 /*  32 ms / 30 fps */
+#define EXPOSURE_KNEE 50 /* 100 ms / 10 fps */
+		.default_value = EXPOSURE_DEF,
+	    },
+	    .set = sd_setexposure,
+	    .get = sd_getexposure,
+	},
 	{
 	    {
 		.id      = V4L2_CID_AUTOGAIN,
@@ -127,7 +196,6 @@ static struct ctrl sd_ctrls[] = {
 	    .set = sd_setautogain,
 	    .get = sd_getautogain,
 	},
-/* next controls work with pac7302 only */
 	{
 	    {
 		.id      = V4L2_CID_HFLIP,
@@ -177,7 +245,7 @@ static struct v4l2_pix_format vga_mode[] = {
 };
 
 /* pac 7302 */
-static const __u8 probe_7302[] = {
+static const __u8 init_7302[] = {
 /*	index,value */
 	0xff, 0x01,		/* page 1 */
 	0x78, 0x00,		/* deactivate */
@@ -243,7 +311,7 @@ static const __u8 start_7302[] = {
 	0x2a, 5,	0xc8, 0x00, 0x18, 0x12, 0x22,
 	0x64, 8,	0x00, 0x00, 0xf0, 0x01, 0x14, 0x44, 0x44, 0x44,
 	0x6e, 1,	0x08,
-	0xff, 1,	0x03,		/* page 1 */
+	0xff, 1,	0x01,		/* page 1 */
 	0x78, 1,	0x00,
 	0, 0				/* end of sequence */
 };
@@ -273,10 +341,10 @@ static const __u8 page3_7302[] = {
 };
 
 /* pac 7311 */
-static const __u8 probe_7311[] = {
-	0x78, 0x40,	/* Bit_0=start stream, Bit_7=LED */
-	0x78, 0x40,	/* Bit_0=start stream, Bit_7=LED */
-	0x78, 0x44,	/* Bit_0=start stream, Bit_7=LED */
+static const __u8 init_7311[] = {
+	0x78, 0x40,	/* Bit_0=start stream, Bit_6=LED */
+	0x78, 0x40,	/* Bit_0=start stream, Bit_6=LED */
+	0x78, 0x44,	/* Bit_0=start stream, Bit_6=LED */
 	0xff, 0x04,
 	0x27, 0x80,
 	0x28, 0xca,
@@ -321,7 +389,7 @@ static const __u8 page4_7311[] = {
 	0x09, 0x00, 0xaa, 0xaa, 0x07, 0x00, 0x00, 0x62,
 	0x08, 0xaa, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
 	0x00, 0x00, 0x00, 0x03, 0xa0, 0x01, 0xf4, 0xaa,
-	0xaa, 0x00, 0x08, 0xaa, 0x03, 0xaa, 0x00, 0x01,
+	0xaa, 0x00, 0x08, 0xaa, 0x03, 0xaa, 0x00, 0x68,
 	0xca, 0x10, 0x06, 0x78, 0x00, 0x00, 0x00, 0x00,
 	0x23, 0x28, 0x04, 0x11, 0x00, 0x00
 };
@@ -340,18 +408,6 @@ static void reg_w_buf(struct gspca_dev *gspca_dev,
 			500);
 }
 
-static __u8 reg_r(struct gspca_dev *gspca_dev,
-			     __u8 index)
-{
-	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, 1,
-			500);
-	return gspca_dev->usb_buf[0];
-}
 
 static void reg_w(struct gspca_dev *gspca_dev,
 		  __u8 index,
@@ -362,7 +418,7 @@ static void reg_w(struct gspca_dev *gspca_dev,
 			usb_sndctrlpipe(gspca_dev->dev, 0),
 			0,			/* request */
 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			value, index, gspca_dev->usb_buf, 1,
+			0, index, gspca_dev->usb_buf, 1,
 			500);
 }
 
@@ -413,7 +469,7 @@ static void reg_w_var(struct gspca_dev *gspca_dev,
 			reg_w_page(gspca_dev, page3_7302, sizeof page3_7302);
 			break;
 		default:
-			if (len > 32) {
+			if (len > 64) {
 				PDEBUG(D_ERR|D_STREAM,
 					"Incorrect variable sequence");
 				return;
@@ -447,30 +503,28 @@ static int sd_config(struct gspca_dev *gspca_dev,
 	sd->sensor = id->driver_info;
 	if (sd->sensor == SENSOR_PAC7302) {
 		PDEBUG(D_CONF, "Find Sensor PAC7302");
-		reg_w_seq(gspca_dev, probe_7302, sizeof probe_7302);
-
 		cam->cam_mode = &vga_mode[2];	/* only 640x480 */
 		cam->nmodes = 1;
 	} else {
 		PDEBUG(D_CONF, "Find Sensor PAC7311");
-		reg_w_seq(gspca_dev, probe_7302, sizeof probe_7302);
-
 		cam->cam_mode = vga_mode;
 		cam->nmodes = ARRAY_SIZE(vga_mode);
+		gspca_dev->ctrl_dis = (1 << BRIGHTNESS_IDX)
+				| (1 << SATURATION_IDX);
 	}
 
 	sd->brightness = BRIGHTNESS_DEF;
 	sd->contrast = CONTRAST_DEF;
 	sd->colors = COLOR_DEF;
+	sd->gain = GAIN_DEF;
+	sd->exposure = EXPOSURE_DEF;
 	sd->autogain = AUTOGAIN_DEF;
 	sd->hflip = HFLIP_DEF;
 	sd->vflip = VFLIP_DEF;
-	sd->qindex = 3;
-	sd->ag_cnt = -1;
 	return 0;
 }
 
-/* rev 12a only */
+/* This function is used by pac7302 only */
 static void setbrightcont(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
@@ -497,98 +551,127 @@ static void setbrightcont(struct gspca_dev *gspca_dev)
 	reg_w(gspca_dev, 0xdc, 0x01);
 }
 
-static void setbrightness(struct gspca_dev *gspca_dev)
+/* This function is used by pac7311 only */
+static void setcontrast(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
-	int brightness;
 
-	if (sd->sensor == SENSOR_PAC7302) {
-		setbrightcont(gspca_dev);
-		return;
-	}
-/*jfm: inverted?*/
-	brightness = BRIGHTNESS_MAX - sd->brightness;
 	reg_w(gspca_dev, 0xff, 0x04);
-	reg_w(gspca_dev, 0x0e, 0x00);
-	reg_w(gspca_dev, 0x0f, brightness);
+	reg_w(gspca_dev, 0x10, sd->contrast >> 4);
 	/* load registers to sensor (Bit 0, auto clear) */
 	reg_w(gspca_dev, 0x11, 0x01);
-	PDEBUG(D_CONF|D_STREAM, "brightness: %i", brightness);
 }
 
-static void setcontrast(struct gspca_dev *gspca_dev)
+/* 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};
 
-	if (sd->sensor == SENSOR_PAC7302) {
-		setbrightcont(gspca_dev);
-		return;
-	}
-	reg_w(gspca_dev, 0xff, 0x01);
-	reg_w(gspca_dev, 0x10, sd->contrast);
-	/* load registers to sensor (Bit 0, auto clear) */
+	reg_w(gspca_dev, 0xff, 0x03);	/* page 3 */
 	reg_w(gspca_dev, 0x11, 0x01);
+	reg_w(gspca_dev, 0xff, 0x00);	/* page 0 */
+	reg_w(gspca_dev, 0xff, 0x00);	/* page 0 */
+	for (i = 0; i < 9; i++) {
+		v = a[i] * sd->colors / 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);
+	PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors);
 }
 
-static void setcolors(struct gspca_dev *gspca_dev)
+static void setgain(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 
 	if (sd->sensor == SENSOR_PAC7302) {
-		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 */
-		reg_w(gspca_dev, 0xff, 0x00);	/* page 0 */
-		for (i = 0; i < 9; i++) {
-			v = a[i] * sd->colors / 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);
-		return;
+		reg_w(gspca_dev, 0xff, 0x03);		/* page 3 */
+		reg_w(gspca_dev, 0x10, sd->gain >> 3);
+	} else {
+		int gain = GAIN_MAX - sd->gain;
+		if (gain < 1)
+			gain = 1;
+		else if (gain > 245)
+			gain = 245;
+		reg_w(gspca_dev, 0xff, 0x04);		/* page 4 */
+		reg_w(gspca_dev, 0x0e, 0x00);
+		reg_w(gspca_dev, 0x0f, gain);
 	}
-	reg_w(gspca_dev, 0xff, 0x01);
-	reg_w(gspca_dev, 0x80, sd->colors);
 	/* load registers to sensor (Bit 0, auto clear) */
 	reg_w(gspca_dev, 0x11, 0x01);
-	PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors);
 }
 
-static void setautogain(struct gspca_dev *gspca_dev)
+static void setexposure(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
+	__u8 reg;
 
-	if (sd->autogain) {
-		sd->lum_sum = 0;
-		sd->ag_cnt = AG_CNT_START;
+	/* register 2 of frame 3/4 contains the clock divider configuring the
+	   no fps according to the formula: 60 / reg. sd->exposure is the
+	   desired exposure time in ms. */
+	reg = 120 * sd->exposure / 1000;
+	if (reg < 2)
+		reg = 2;
+	else if (reg > 63)
+		reg = 63;
+
+	if (sd->sensor == SENSOR_PAC7302) {
+		/* On the pac7302 reg2 MUST be a multiple of 3, so round it to
+		   the nearest multiple of 3, except when between 6 and 12? */
+		if (reg < 6 || reg > 12)
+			reg = ((reg + 1) / 3) * 3;
+		reg_w(gspca_dev, 0xff, 0x03);		/* page 3 */
+		reg_w(gspca_dev, 0x02, reg);
 	} else {
-		sd->ag_cnt = -1;
+		reg_w(gspca_dev, 0xff, 0x04);		/* page 4 */
+		reg_w(gspca_dev, 0x02, reg);
+		/* Page 1 register 8 must always be 0x08 except when not in
+		   640x480 mode and Page3/4 reg 2 <= 3 then it must be 9 */
+		reg_w(gspca_dev, 0xff, 0x01);
+		if (gspca_dev->cam.cam_mode[(int)gspca_dev->curr_mode].priv &&
+				reg <= 3)
+			reg_w(gspca_dev, 0x08, 0x09);
+		else
+			reg_w(gspca_dev, 0x08, 0x08);
 	}
+	/* load registers to sensor (Bit 0, auto clear) */
+	reg_w(gspca_dev, 0x11, 0x01);
 }
 
-/* this function is used by pac7302 only */
 static void sethvflip(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 	__u8 data;
 
-	reg_w(gspca_dev, 0xff, 0x03);		/* page 3 */
-	data = (sd->hflip ? 0x00 : 0x08)
-		| (sd->vflip ? 0x04 : 0x00);
+	if (sd->sensor == SENSOR_PAC7302) {
+		reg_w(gspca_dev, 0xff, 0x03);		/* page 3 */
+		data = (sd->hflip ? 0x08 : 0x00)
+			| (sd->vflip ? 0x04 : 0x00);
+	} else {
+		reg_w(gspca_dev, 0xff, 0x04);		/* page 4 */
+		data = (sd->hflip ? 0x04 : 0x00)
+			| (sd->vflip ? 0x08 : 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 open time */
-static int sd_open(struct gspca_dev *gspca_dev)
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
 {
-	reg_w(gspca_dev, 0x78, 0x44);	/* Turn on LED */
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	if (sd->sensor == SENSOR_PAC7302)
+		reg_w_seq(gspca_dev, init_7302, sizeof init_7302);
+	else
+		reg_w_seq(gspca_dev, init_7311, sizeof init_7311);
+
 	return 0;
 }
 
@@ -596,60 +679,51 @@ static void sd_start(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 
-	sd->tosof = 0;
+	sd->sof_read = 0;
 
-	if (sd->sensor == SENSOR_PAC7302)
+	if (sd->sensor == SENSOR_PAC7302) {
 		reg_w_var(gspca_dev, start_7302);
-	else
+		setbrightcont(gspca_dev);
+		setcolors(gspca_dev);
+	} else {
 		reg_w_var(gspca_dev, start_7311);
-
-	setcontrast(gspca_dev);
-	setbrightness(gspca_dev);
-	setcolors(gspca_dev);
-	setautogain(gspca_dev);
+		setcontrast(gspca_dev);
+	}
+	setgain(gspca_dev);
+	setexposure(gspca_dev);
+	sethvflip(gspca_dev);
 
 	/* set correct resolution */
 	switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 	case 2:					/* 160x120 pac7311 */
-		reg_w(gspca_dev, 0xff, 0x04);
-		reg_w(gspca_dev, 0x02, 0x03);
 		reg_w(gspca_dev, 0xff, 0x01);
-		reg_w(gspca_dev, 0x08, 0x09);
 		reg_w(gspca_dev, 0x17, 0x20);
-		reg_w(gspca_dev, 0x1b, 0x00);
 		reg_w(gspca_dev, 0x87, 0x10);
 		break;
 	case 1:					/* 320x240 pac7311 */
-		reg_w(gspca_dev, 0xff, 0x04);
-		reg_w(gspca_dev, 0x02, 0x07);
 		reg_w(gspca_dev, 0xff, 0x01);
-		reg_w(gspca_dev, 0x08, 0x09);
 		reg_w(gspca_dev, 0x17, 0x30);
 		reg_w(gspca_dev, 0x87, 0x11);
 		break;
 	case 0:					/* 640x480 */
 		if (sd->sensor == SENSOR_PAC7302)
 			break;
-		reg_w(gspca_dev, 0xff, 0x04);
-		reg_w(gspca_dev, 0x02, 0x07);
 		reg_w(gspca_dev, 0xff, 0x01);
-		reg_w(gspca_dev, 0x08, 0x08);
 		reg_w(gspca_dev, 0x17, 0x00);
 		reg_w(gspca_dev, 0x87, 0x12);
 		break;
 	}
 
+	sd->sof_read = 0;
+	sd->autogain_ignore_frames = 0;
+	atomic_set(&sd->avg_lum, -1);
+
 	/* start stream */
 	reg_w(gspca_dev, 0xff, 0x01);
-	if (sd->sensor == SENSOR_PAC7302) {
-		sethvflip(gspca_dev);
-		reg_w(gspca_dev, 0x78, 0x01);
-		reg_w(gspca_dev, 0xff, 0x01);
+	if (sd->sensor == SENSOR_PAC7302)
 		reg_w(gspca_dev, 0x78, 0x01);
-	} else {
-		reg_w(gspca_dev, 0x78, 0x44);
-		reg_w(gspca_dev, 0x78, 0x45);
-	}
+	else
+		reg_w(gspca_dev, 0x78, 0x05);
 }
 
 static void sd_stopN(struct gspca_dev *gspca_dev)
@@ -657,6 +731,7 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	struct sd *sd = (struct sd *) gspca_dev;
 
 	if (sd->sensor == SENSOR_PAC7302) {
+		reg_w(gspca_dev, 0xff, 0x01);
 		reg_w(gspca_dev, 0x78, 0x00);
 		reg_w(gspca_dev, 0x78, 0x00);
 		return;
@@ -668,9 +743,9 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 	reg_w(gspca_dev, 0x2a, 0x0e);
 	reg_w(gspca_dev, 0xff, 0x01);
 	reg_w(gspca_dev, 0x3e, 0x20);
-	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
-	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
-	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_7=LED */
+	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
+	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
+	reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
 }
 
 static void sd_stop0(struct gspca_dev *gspca_dev)
@@ -683,49 +758,51 @@ 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)
-{
-}
+/* Include pac common sof detection functions */
+#include "pac_common.h"
 
 static void do_autogain(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
-	int luma;
-	int luma_mean = 128;
-	int luma_delta = 20;
-	__u8 spring = 5;
-	int Gbright;
+	int avg_lum = atomic_read(&sd->avg_lum);
+	int desired_lum, deadzone;
 
-	if (!atomic_read(&sd->do_gain))
+	if (avg_lum == -1)
 		return;
-	atomic_set(&sd->do_gain, 0);
-
-	luma = atomic_read(&sd->avg_lum);
-	Gbright = reg_r(gspca_dev, 0x02);
-	PDEBUG(D_FRAM, "luma mean %d", luma);
-	if (luma < luma_mean - luma_delta ||
-	    luma > luma_mean + luma_delta) {
-		Gbright += (luma_mean - luma) >> spring;
-		if (Gbright > 0x1a)
-			Gbright = 0x1a;
-		else if (Gbright < 4)
-			Gbright = 4;
-		PDEBUG(D_FRAM, "gbright %d", Gbright);
-		if (sd->sensor == SENSOR_PAC7302) {
-			reg_w(gspca_dev, 0xff, 0x03);
-			reg_w(gspca_dev, 0x10, Gbright);
-			/* load registers to sensor (Bit 0, auto clear) */
-			reg_w(gspca_dev, 0x11, 0x01);
-		} else {
-			reg_w(gspca_dev, 0xff, 0x04);
-			reg_w(gspca_dev, 0x0f, Gbright);
-			/* load registers to sensor (Bit 0, auto clear) */
-			reg_w(gspca_dev, 0x11, 0x01);
-		}
+
+	if (sd->sensor == SENSOR_PAC7302) {
+		desired_lum = 270 + sd->brightness * 4;
+		/* Hack hack, with the 7202 the first exposure step is
+		   pretty large, so if we're about to make the first
+		   exposure increase make the deadzone large to avoid
+		   oscilating */
+		if (desired_lum > avg_lum && sd->gain == GAIN_DEF &&
+				sd->exposure > EXPOSURE_DEF &&
+				sd->exposure < 42)
+			deadzone = 90;
+		else
+			deadzone = 30;
+	} else {
+		desired_lum = 200;
+		deadzone = 20;
 	}
+
+	if (sd->autogain_ignore_frames > 0)
+		sd->autogain_ignore_frames--;
+	else if (gspca_auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum,
+			deadzone, GAIN_KNEE, EXPOSURE_KNEE))
+		sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
 }
 
+static const unsigned char pac7311_jpeg_header1[] = {
+  0xff, 0xd8, 0xff, 0xc0, 0x00, 0x11, 0x08
+};
+
+static const unsigned char pac7311_jpeg_header2[] = {
+  0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xda,
+  0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00
+};
+
 /* this function is run at interrupt level */
 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 			struct gspca_frame *frame,	/* target */
@@ -733,58 +810,71 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 			int len)			/* iso packet length */
 {
 	struct sd *sd = (struct sd *) gspca_dev;
-	int i;
-
-#define INTER_FRAME 0x53	/* eof + inter frame + sof */
-#define LUM_OFFSET 0x1e		/* reverse offset / start of frame */
-
-	/*
-	 * inside a frame, there may be:
-	 *	escaped ff ('ff 00')
-	 *	sequences'ff ff ff xx' to remove
-	 *	end of frame ('ff d9')
-	 * at the end of frame, there are:
-	 *	ff d9			end of frame
-	 *	0x33 bytes
-	 *	one byte luminosity
-	 *	0x16 bytes
-	 *	ff ff 00 ff 96 62 44	start of frame
-	 */
-
-	if (sd->tosof != 0) {	/* if outside a frame */
-
-		/* get the luminosity and go to the start of frame */
-		data += sd->tosof;
-		len -= sd->tosof;
-		if (sd->tosof > LUM_OFFSET)
-			sd->lum_sum += data[-LUM_OFFSET];
-		sd->tosof = 0;
-		jpeg_put_header(gspca_dev, frame, sd->qindex, 0x21);
-	}
+	unsigned char *sof;
 
-	for (i = 0; i < len; i++) {
-		if (data[i] != 0xff)
-			continue;
-		switch (data[i + 1]) {
-		case 0xd9:		/* 'ff d9' end of frame */
-			frame = gspca_frame_add(gspca_dev,
-						LAST_PACKET,
-						frame, data, i + 2);
-			data += i + INTER_FRAME;
-			len -= i + INTER_FRAME;
-			i = 0;
-			if (len > -LUM_OFFSET)
-				sd->lum_sum += data[-LUM_OFFSET];
-			if (len < 0) {
-				sd->tosof = -len;
-				break;
-			}
-			jpeg_put_header(gspca_dev, frame, sd->qindex, 0x21);
-			break;
+	sof = pac_find_sof(gspca_dev, data, len);
+	if (sof) {
+		unsigned char tmpbuf[4];
+		int n, lum_offset, footer_length;
+
+		if (sd->sensor == SENSOR_PAC7302) {
+		  /* 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;
+		} else {
+		  lum_offset = 24 + sizeof pac_sof_marker;
+		  footer_length = 26;
+		}
+
+		/* Finish decoding current frame */
+		n = (sof - data) - (footer_length + sizeof pac_sof_marker);
+		if (n < 0) {
+			frame->data_end += n;
+			n = 0;
+		}
+		frame = gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+					data, n);
+		if (gspca_dev->last_packet_type != DISCARD_PACKET &&
+				frame->data_end[-2] == 0xff &&
+				frame->data_end[-1] == 0xd9)
+			frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
+						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]);
+		else
+			atomic_set(&sd->avg_lum, -1);
+
+		/* Start the new frame with the jpeg header */
+		gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
+			pac7311_jpeg_header1, sizeof(pac7311_jpeg_header1));
+		if (sd->sensor == SENSOR_PAC7302) {
+			/* The PAC7302 has the image rotated 90 degrees */
+			tmpbuf[0] = gspca_dev->width >> 8;
+			tmpbuf[1] = gspca_dev->width & 0xff;
+			tmpbuf[2] = gspca_dev->height >> 8;
+			tmpbuf[3] = gspca_dev->height & 0xff;
+		} else {
+			tmpbuf[0] = gspca_dev->height >> 8;
+			tmpbuf[1] = gspca_dev->height & 0xff;
+			tmpbuf[2] = gspca_dev->width >> 8;
+			tmpbuf[3] = gspca_dev->width & 0xff;
 		}
+		gspca_frame_add(gspca_dev, INTER_PACKET, frame, tmpbuf, 4);
+		gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+			pac7311_jpeg_header2, sizeof(pac7311_jpeg_header2));
 	}
-	gspca_frame_add(gspca_dev, INTER_PACKET,
-			frame, data, i);
+	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
 }
 
 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
@@ -793,7 +883,7 @@ static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
 
 	sd->brightness = val;
 	if (gspca_dev->streaming)
-		setbrightness(gspca_dev);
+		setbrightcont(gspca_dev);
 	return 0;
 }
 
@@ -810,8 +900,12 @@ 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);
+	if (gspca_dev->streaming) {
+		if (sd->sensor == SENSOR_PAC7302)
+			setbrightcont(gspca_dev);
+		else
+			setcontrast(gspca_dev);
+	}
 	return 0;
 }
 
@@ -841,13 +935,62 @@ static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
 	return 0;
 }
 
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	sd->gain = val;
+	if (gspca_dev->streaming)
+		setgain(gspca_dev);
+	return 0;
+}
+
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	*val = sd->gain;
+	return 0;
+}
+
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	sd->exposure = val;
+	if (gspca_dev->streaming)
+		setexposure(gspca_dev);
+	return 0;
+}
+
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	*val = sd->exposure;
+	return 0;
+}
+
 static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 
 	sd->autogain = val;
-	if (gspca_dev->streaming)
-		setautogain(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->autogain) {
+		sd->exposure = EXPOSURE_DEF;
+		sd->gain = GAIN_DEF;
+		if (gspca_dev->streaming) {
+			sd->autogain_ignore_frames =
+				PAC_AUTOGAIN_IGNORE_FRAMES;
+			setexposure(gspca_dev);
+			setgain(gspca_dev);
+		}
+	}
+
 	return 0;
 }
 
@@ -901,11 +1044,10 @@ static struct sd_desc sd_desc = {
 	.ctrls = sd_ctrls,
 	.nctrls = ARRAY_SIZE(sd_ctrls),
 	.config = sd_config,
-	.open = sd_open,
+	.init = sd_init,
 	.start = sd_start,
 	.stopN = sd_stopN,
 	.stop0 = sd_stop0,
-	.close = sd_close,
 	.pkt_scan = sd_pkt_scan,
 	.dq_callback = do_autogain,
 };
@@ -919,6 +1061,8 @@ static __devinitdata struct usb_device_id device_table[] = {
 	{USB_DEVICE(0x093a, 0x260e), .driver_info = SENSOR_PAC7311},
 	{USB_DEVICE(0x093a, 0x260f), .driver_info = SENSOR_PAC7311},
 	{USB_DEVICE(0x093a, 0x2621), .driver_info = SENSOR_PAC7302},
+	{USB_DEVICE(0x093a, 0x2624), .driver_info = SENSOR_PAC7302},
+	{USB_DEVICE(0x093a, 0x2626), .driver_info = SENSOR_PAC7302},
 	{}
 };
 MODULE_DEVICE_TABLE(usb, device_table);