V4L/DVB (11530): gspca - m5602-s5k4aa: Add brightness v4l2 ctrl

Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/m5602/m5602_s5k4aa.c

@@ -28,6 +28,8 @@ static int s5k4aa_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
 static int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val);
 static int s5k4aa_get_noise(struct gspca_dev *gspca_dev, __s32 *val);
 static int s5k4aa_set_noise(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k4aa_get_brightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_brightness(struct gspca_dev *gspca_dev, __s32 val);
 
 static
     const
@@ -113,7 +115,7 @@ const static struct ctrl s5k4aa_ctrls[] = {
 			.minimum	= 0,
 			.maximum	= 127,
 			.step		= 1,
-			.default_value	= DEFAULT_GAIN_2,
+			.default_value	= S5K4AA_DEFAULT_GAIN,
 			.flags		= V4L2_CTRL_FLAG_SLIDER
 		},
 		.set = s5k4aa_set_gain,
@@ -148,6 +150,21 @@ const static struct ctrl s5k4aa_ctrls[] = {
 			.set = s5k4aa_set_noise,
 			.get = s5k4aa_get_noise
 	},
+#define BRIGHTNESS_IDX 5
+	{
+		{
+			.id		= V4L2_CID_BRIGHTNESS,
+			.type		= V4L2_CTRL_TYPE_INTEGER,
+			.name		= "Brightness",
+			.minimum	= 0,
+			.maximum	= 0x1f,
+			.step		= 1,
+			.default_value	= S5K4AA_DEFAULT_BRIGHTNESS,
+		},
+			.set = s5k4aa_set_brightness,
+			.get = s5k4aa_get_brightness
+	},
+
 };
 
 static void s5k4aa_dump_registers(struct sd *sd);
@@ -320,6 +337,11 @@ int s5k4aa_init(struct sd *sd)
 	if (err < 0)
 		return err;
 
+	err = s5k4aa_set_brightness(&sd->gspca_dev,
+				     sensor_settings[BRIGHTNESS_IDX]);
+	if (err < 0)
+		return err;
+
 	err = s5k4aa_set_noise(&sd->gspca_dev, sensor_settings[NOISE_SUPP_IDX]);
 	if (err < 0)
 		return err;
@@ -508,9 +530,37 @@ static int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 		return err;
 
 	data = val & 0xff;
-	err = m5602_write_sensor(sd, S5K4AA_GAIN_2, &data, 1);
+	err = m5602_write_sensor(sd, S5K4AA_GAIN, &data, 1);
+
+	return err;
+}
+
+static int s5k4aa_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	s32 *sensor_settings = sd->sensor_priv;
+
+	*val = sensor_settings[BRIGHTNESS_IDX];
+	PDEBUG(D_V4L2, "Read brightness %d", *val);
+	return 0;
+}
+
+static int s5k4aa_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
+{
+	struct sd *sd = (struct sd *) gspca_dev;
+	s32 *sensor_settings = sd->sensor_priv;
+	u8 data = S5K4AA_PAGE_MAP_2;
+	int err;
+
+	sensor_settings[BRIGHTNESS_IDX] = val;
 
+	PDEBUG(D_V4L2, "Set brightness to %d", val);
+	err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+	if (err < 0)
 		return err;
+
+	data = val & 0xff;
+	return m5602_write_sensor(sd, S5K4AA_BRIGHTNESS, &data, 1);
 }
 
 static int s5k4aa_get_noise(struct gspca_dev *gspca_dev, __s32 *val)

drivers/media/video/gspca/m5602/m5602_s5k4aa.h

@@ -47,8 +47,8 @@
 #define S5K4AA_H_BLANK_LO__		0x1e
 #define S5K4AA_EXPOSURE_HI		0x17
 #define S5K4AA_EXPOSURE_LO		0x18
-#define S5K4AA_GAIN_1			0x1f /* (digital?) gain : 5 bits */
-#define S5K4AA_GAIN_2			0x20 /* (analogue?) gain : 7 bits */
+#define S5K4AA_BRIGHTNESS		0x1f /* (digital?) gain : 5 bits */
+#define S5K4AA_GAIN			0x20 /* (analogue?) gain : 7 bits */
 #define S5K4AA_NOISE_SUPP		0x37
 
 #define S5K4AA_RM_ROW_SKIP_4X		0x08
@@ -58,7 +58,8 @@
 #define S5K4AA_RM_H_FLIP		0x40
 #define S5K4AA_RM_V_FLIP		0x80
 
-#define DEFAULT_GAIN_2			0x5f
+#define S5K4AA_DEFAULT_GAIN		0x5f
+#define S5K4AA_DEFAULT_BRIGHTNESS	0x10
 
 /*****************************************************************************/
 
@@ -303,7 +304,6 @@ static const unsigned char VGA_s5k4aa[][4] =
 	{SENSOR, 0x12, 0xc3, 0x00},
 	{SENSOR, S5K4AA_PAGE_MAP, 0x02, 0x00},
 	{SENSOR, 0x02, 0x0e, 0x00},
-	{SENSOR, S5K4AA_GAIN_1, 0x10, 0x00},
 };
 
 #endif