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-rw-r--r--drivers/media/video/gspca/m5602/m5602_ov7660.c51
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/media/video/gspca/m5602/m5602_ov7660.c b/drivers/media/video/gspca/m5602/m5602_ov7660.c
index 7d2af089ee9..855c058d5df 100644
--- a/drivers/media/video/gspca/m5602/m5602_ov7660.c
+++ b/drivers/media/video/gspca/m5602/m5602_ov7660.c
@@ -28,6 +28,8 @@ static int ov7660_get_auto_white_balance(struct gspca_dev *gspca_dev,
__s32 *val);
static int ov7660_set_auto_white_balance(struct gspca_dev *gspca_dev,
__s32 val);
+static int ov7660_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val);
+static int ov7660_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val);
const static struct ctrl ov7660_ctrls[] = {
@@ -90,7 +92,20 @@ const static struct ctrl ov7660_ctrls[] = {
.set = ov7660_set_auto_white_balance,
.get = ov7660_get_auto_white_balance
},
-
+#define AUTO_GAIN_CTRL_IDX 5
+ {
+ {
+ .id = V4L2_CID_AUTOGAIN,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "auto gain control",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1
+ },
+ .set = ov7660_set_auto_gain,
+ .get = ov7660_get_auto_gain
+ },
};
static struct v4l2_pix_format ov7660_modes[] = {
@@ -207,6 +222,11 @@ int ov7660_init(struct sd *sd)
if (err < 0)
return err;
+ err = ov7660_set_auto_gain(&sd->gspca_dev,
+ sensor_settings[AUTO_GAIN_CTRL_IDX]);
+ if (err < 0)
+ return err;
+
err = ov7660_set_blue_gain(&sd->gspca_dev,
sensor_settings[BLUE_BALANCE_IDX]);
if (err < 0)
@@ -342,6 +362,35 @@ static int ov7660_set_auto_white_balance(struct gspca_dev *gspca_dev,
return err;
}
+static int ov7660_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[AUTO_GAIN_CTRL_IDX];
+ PDEBUG(D_V4L2, "Read auto gain control %d", *val);
+ return 0;
+}
+
+static int ov7660_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 i2c_data;
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ PDEBUG(D_V4L2, "Set auto gain control to %d", val);
+
+ sensor_settings[AUTO_GAIN_CTRL_IDX] = val;
+ err = m5602_read_sensor(sd, OV7660_COM8, &i2c_data, 1);
+ if (err < 0)
+ return err;
+
+ i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
+
+ return m5602_write_sensor(sd, OV7660_COM8, &i2c_data, 1);
+}
+
static void ov7660_dump_registers(struct sd *sd)
{
int address;