gspca - m5602-ov9650: Synthesize modesetting.

From: Erik Andr?n <erik.andren@gmail.com>

Previously all resolution setting was done with precalculated tables.
When the image is vflipped we need to adjust the alignment which would
require another table. Now we can adjust the parameters on the fly instead.

Priority: normal

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>

3 files changed, 76 insertions, 128 deletions

diff --git a/linux/drivers/media/video/gspca/m5602/m5602_core.c b/linux/drivers/media/video/gspca/m5602/m5602_core.c
index bae7aa6f0..0d84a12d5 100644
--- a/linux/drivers/media/video/gspca/m5602/m5602_core.c
+++ b/linux/drivers/media/video/gspca/m5602/m5602_core.c
@@ -51,7 +51,7 @@ int m5602_read_bridge(struct sd *sd, u8 address, u8 *i2c_data)
 	       address, *i2c_data);
 
 	/* usb_control_msg(...) returns the number of bytes sent upon success,
-	mask that and return zero upon success instead*/
+	mask that and return zero instead*/
 	return (err < 0) ? err : 0;
 }
 
@@ -76,7 +76,7 @@ int m5602_write_bridge(struct sd *sd, u8 address, u8 i2c_data)
 				4, M5602_URB_MSG_TIMEOUT);
 
 	/* usb_control_msg(...) returns the number of bytes sent upon success,
-	   mask that and return zero upon success instead */
+	   mask that and return zero instead */
 	return (err < 0) ? err : 0;
 }
 
diff --git a/linux/drivers/media/video/gspca/m5602/m5602_ov9650.c b/linux/drivers/media/video/gspca/m5602/m5602_ov9650.c
index e882385dd..dbcf61ad0 100644
--- a/linux/drivers/media/video/gspca/m5602/m5602_ov9650.c
+++ b/linux/drivers/media/video/gspca/m5602/m5602_ov9650.c
@@ -182,7 +182,7 @@ static struct v4l2_pix_format ov9650_modes[] = {
 			176 * 144,
 		.bytesperline = 176,
 		.colorspace = V4L2_COLORSPACE_SRGB,
-		.priv = 0
+		.priv = 9
 	}, {
 		320,
 		240,
@@ -192,7 +192,7 @@ static struct v4l2_pix_format ov9650_modes[] = {
 			320 * 240,
 		.bytesperline = 320,
 		.colorspace = V4L2_COLORSPACE_SRGB,
-		.priv = 0
+		.priv = 8
 	}, {
 		352,
 		288,
@@ -202,7 +202,7 @@ static struct v4l2_pix_format ov9650_modes[] = {
 			352 * 288,
 		.bytesperline = 352,
 		.colorspace = V4L2_COLORSPACE_SRGB,
-		.priv = 0
+		.priv = 9
 	}, {
 		640,
 		480,
@@ -212,7 +212,7 @@ static struct v4l2_pix_format ov9650_modes[] = {
 			640 * 480,
 		.bytesperline = 640,
 		.colorspace = V4L2_COLORSPACE_SRGB,
-		.priv = 0
+		.priv = 9
 	}
 };
 
@@ -297,13 +297,22 @@ int ov9650_init(struct sd *sd)
 
 int ov9650_start(struct sd *sd)
 {
+	u8 data;
 	int i, err = 0;
 	struct cam *cam = &sd->gspca_dev.cam;
+	int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
+	int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
+	int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
+	int hor_offs = OV9650_LEFT_OFFSET;
+
+	if (width <= 320)
+		hor_offs /= 2;
 
 	err = ov9650_init(sd);
 	if (err < 0)
 		return err;
 
+	/* Synthesize the vsync/hsync setup */
 	for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) {
 		if (res_init_ov9650[i][0] == BRIDGE)
 			err = m5602_write_bridge(sd, res_init_ov9650[i][1],
@@ -317,70 +326,87 @@ int ov9650_start(struct sd *sd)
 	if (err < 0)
 		return err;
 
-	switch (cam->cam_mode[sd->gspca_dev.curr_mode].width) {
+	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, ((ver_offs >> 8) & 0xff));
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
+	if (err < 0)
+		return err;
+
+	for (i = 0; i < 2 && !err; i++) {
+		err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
+	}
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (hor_offs >> 8) & 0xff);
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, hor_offs & 0xff);
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, ((width + hor_offs) >> 8) & 0xff);
+	if (err < 0)
+		return err;
+
+	err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, ((width + hor_offs) & 0xff));
+	if (err < 0)
+		return err;
+
+	switch (width) {
 	case 640:
 		PDEBUG(D_V4L2, "Configuring camera for VGA mode");
 
-		for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
-			if (VGA_ov9650[i][0] == SENSOR) {
-				u8 data = VGA_ov9650[i][2];
+		data = OV9650_VGA_SELECT | OV9650_RGB_SELECT |
+		       OV9650_RAW_RGB_SELECT;
+
+		err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
 
-				err = m5602_write_sensor(sd,
-					VGA_ov9650[i][1], &data, 1);
-			} else {
-				err = m5602_write_bridge(sd, VGA_ov9650[i][1],
-						VGA_ov9650[i][2]);
-			}
-		}
 		break;
 
 	case 352:
 		PDEBUG(D_V4L2, "Configuring camera for CIF mode");
 
-		for (i = 0; i < ARRAY_SIZE(CIF_ov9650) && !err; i++) {
-			if (CIF_ov9650[i][0] == SENSOR) {
-				u8 data = CIF_ov9650[i][2];
+		data = OV9650_CIF_SELECT | OV9650_RGB_SELECT |
+				OV9650_RAW_RGB_SELECT;
+
+		err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
 
-				err = m5602_write_sensor(sd,
-					CIF_ov9650[i][1], &data, 1);
-			} else {
-				err = m5602_write_bridge(sd, CIF_ov9650[i][1],
-						CIF_ov9650[i][2]);
-			}
-		}
 		break;
 
 	case 320:
 		PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
 
-		for (i = 0; i < ARRAY_SIZE(QVGA_ov9650) && !err; i++) {
-			if (QVGA_ov9650[i][0] == SENSOR) {
-				u8 data = QVGA_ov9650[i][2];
+		data = OV9650_QVGA_SELECT | OV9650_RGB_SELECT |
+				OV9650_RAW_RGB_SELECT;
+
+		err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
 
-				err = m5602_write_sensor(sd,
-					QVGA_ov9650[i][1], &data, 1);
-			} else {
-				err = m5602_write_bridge(sd, QVGA_ov9650[i][1],
-						QVGA_ov9650[i][2]);
-			}
-		}
 		break;
 
 	case 176:
 		PDEBUG(D_V4L2, "Configuring camera for QCIF mode");
 
-		for (i = 0; i < ARRAY_SIZE(QCIF_ov9650) && !err; i++) {
-			if (QCIF_ov9650[i][0] == SENSOR) {
-				u8 data = QCIF_ov9650[i][2];
-				err = m5602_write_sensor(sd,
-					QCIF_ov9650[i][1], &data, 1);
-			} else {
-				err = m5602_write_bridge(sd, QCIF_ov9650[i][1],
-						QCIF_ov9650[i][2]);
-			}
-		}
-		break;
+		data = OV9650_QCIF_SELECT | OV9650_RGB_SELECT |
+			OV9650_RAW_RGB_SELECT;
 
+		err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
+		break;
 	}
 	return err;
 }
diff --git a/linux/drivers/media/video/gspca/m5602/m5602_ov9650.h b/linux/drivers/media/video/gspca/m5602/m5602_ov9650.h
index ca0e42ee0..cc39d76e5 100644
--- a/linux/drivers/media/video/gspca/m5602/m5602_ov9650.h
+++ b/linux/drivers/media/video/gspca/m5602/m5602_ov9650.h
@@ -120,6 +120,8 @@
 #define OV9650_SOFT_SLEEP		(1 << 4)
 #define OV9650_OUTPUT_DRIVE_2X		(1 << 0)
 
+#define OV9650_LEFT_OFFSET		0x62
+
 #define GAIN_DEFAULT			0x14
 #define RED_GAIN_DEFAULT		0x70
 #define BLUE_GAIN_DEFAULT		0x20
@@ -335,84 +337,4 @@ static const unsigned char res_init_ov9650[][3] =
 	{BRIDGE, M5602_XB_SIG_INI, 0x01}
 };
 
-static const unsigned char VGA_ov9650[][3] =
-{
-	/* Moves the view window in a vertical orientation */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x09},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x01},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0xe0}, /* 480 */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x62}, /* 98 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x02}, /* 640 + 98 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0xe2},
-
-	{SENSOR, OV9650_COM7, OV9650_VGA_SELECT |
-			      OV9650_RGB_SELECT |
-			      OV9650_RAW_RGB_SELECT},
-};
-
-static const unsigned char CIF_ov9650[][3] =
-{
-	/* Moves the view window in a vertical orientation */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x09},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x01},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x20}, /* 288 */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x62}, /* 98 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x01}, /* 352 + 98 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0xc2},
-
-	{SENSOR, OV9650_COM7, OV9650_CIF_SELECT |
-			      OV9650_RGB_SELECT |
-			      OV9650_RAW_RGB_SELECT},
-};
-
-static const unsigned char QVGA_ov9650[][3] =
-{
-	/* Moves the view window in a vertical orientation */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x08},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0xf0}, /* 240 */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x31}, /* 50 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x01}, /* 320 + 50 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x71},
-
-	{SENSOR, OV9650_COM7, OV9650_QVGA_SELECT |
-			      OV9650_RGB_SELECT |
-			      OV9650_RAW_RGB_SELECT},
-};
-
-static const unsigned char QCIF_ov9650[][3] =
-{
-	/* Moves the view window in a vertical orientation */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x09},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x90}, /* 144 */
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_VSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x00},
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x31}, /* 48 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0x00}, /* 176 + 49 */
-	{BRIDGE, M5602_XB_HSYNC_PARA, 0xe1},
-
-	{SENSOR, OV9650_COM7, OV9650_QCIF_SELECT |
-			      OV9650_RGB_SELECT |
-			      OV9650_RAW_RGB_SELECT},
-};
-
 #endif