V4L/DVB (11521): gspca - m5602-ov9650: Add auto exposure ctrl

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

diff --git a/drivers/media/video/gspca/m5602/m5602_ov9650.c b/drivers/media/video/gspca/m5602/m5602_ov9650.c
index 8d830afcedb3e83eb39384317515669d0698d90f..89fb01c9bc8dba1533ec82e021a52e2e65feb290 100644 (file)
--- a/drivers/media/video/gspca/m5602/m5602_ov9650.c
+++ b/drivers/media/video/gspca/m5602/m5602_ov9650.c
@@ -36,6 +36,8 @@ static int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev,
                                         __s32 val);
 static int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val);
 static int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val);
+static int ov9650_get_auto_exposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int ov9650_set_auto_exposure(struct gspca_dev *gspca_dev, __s32 val);
 
 /* Vertically and horizontally flips the image if matched, needed for machines
    where the sensor is mounted upside down */
@@ -201,7 +203,22 @@ const static struct ctrl ov9650_ctrls[] = {
                },
                .set = ov9650_set_auto_gain,
                .get = ov9650_get_auto_gain
+       },
+#define AUTO_EXPOSURE_IDX 8
+       {
+               {
+                       .id             = V4L2_CID_EXPOSURE_AUTO,
+                       .type           = V4L2_CTRL_TYPE_BOOLEAN,
+                       .name           = "auto exposure",
+                       .minimum        = 0,
+                       .maximum        = 1,
+                       .step           = 1,
+                       .default_value  = 1
+               },
+               .set = ov9650_set_auto_exposure,
+               .get = ov9650_get_auto_exposure
        }
+
 };
 
 static struct v4l2_pix_format ov9650_modes[] = {
@@ -356,13 +373,18 @@ int ov9650_init(struct sd *sd)
        if (err < 0)
                return err;
 
+       err = ov9650_set_auto_exposure(&sd->gspca_dev,
+                               sensor_settings[AUTO_EXPOSURE_IDX]);
+       if (err < 0)
+               return err;
+
        err = ov9650_set_auto_white_balance(&sd->gspca_dev,
                                sensor_settings[AUTO_WHITE_BALANCE_IDX]);
        if (err < 0)
                return err;
 
        err = ov9650_set_auto_gain(&sd->gspca_dev,
-                                   sensor_settings[AUTO_GAIN_CTRL_IDX]);
+                               sensor_settings[AUTO_GAIN_CTRL_IDX]);
        return err;
 }
 
@@ -699,6 +721,36 @@ static int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
        return err;
 }
 
+static int ov9650_get_auto_exposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+       struct sd *sd = (struct sd *) gspca_dev;
+       s32 *sensor_settings = sd->sensor_priv;
+
+       *val = sensor_settings[AUTO_EXPOSURE_IDX];
+       PDEBUG(D_V4L2, "Read auto exposure control %d", *val);
+       return 0;
+}
+
+static int ov9650_set_auto_exposure(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 exposure control to %d", val);
+
+       sensor_settings[AUTO_EXPOSURE_IDX] = val;
+       err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
+       if (err < 0)
+               return err;
+
+       i2c_data = ((i2c_data & 0xfe) | ((val & 0x01) << 0));
+
+       return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
+}
+
 static int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev,
                                         __s32 *val)
 {
@@ -755,9 +807,8 @@ static int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
                return err;
 
        i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
-       err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
 
-       return err;
+       return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
 }
 
 static void ov9650_dump_registers(struct sd *sd)