V4L/DVB (11524): gspca - m5602-mt9m111: Add green balance 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_mt9m111.c b/drivers/media/video/gspca/m5602/m5602_mt9m111.c
index 37a7fc8..c1ff477 100644 (file)
--- a/drivers/media/video/gspca/m5602/m5602_mt9m111.c
+++ b/drivers/media/video/gspca/m5602/m5602_mt9m111.c
@@ -28,7 +28,8 @@ static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,
                                         __s32 val);
 static int mt9m111_get_auto_white_balance(struct gspca_dev *gspca_dev,
                                          __s32 *val);
-
+static int mt9m111_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val);
+static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val);
 
 static struct v4l2_pix_format mt9m111_modes[] = {
        {
@@ -100,7 +101,23 @@ const static struct ctrl mt9m111_ctrls[] = {
                },
                .set = mt9m111_set_auto_white_balance,
                .get = mt9m111_get_auto_white_balance
-       }
+       },
+#define GREEN_BALANCE_IDX 4
+       {
+               {
+                       .id             = M5602_V4L2_CID_GREEN_BALANCE,
+                       .type           = V4L2_CTRL_TYPE_INTEGER,
+                       .name           = "green balance",
+                       .minimum        = 0x00,
+                       .maximum        = 0x7ff,
+                       .step           = 0x1,
+                       .default_value  = MT9M111_GREEN_GAIN_DEFAULT,
+                       .flags          = V4L2_CTRL_FLAG_SLIDER
+               },
+               .set = mt9m111_set_green_balance,
+               .get = mt9m111_get_green_balance
+       },
+
 };
 
 static void mt9m111_dump_registers(struct sd *sd);
@@ -197,9 +214,12 @@ int mt9m111_init(struct sd *sd)
        if (err < 0)
                return err;
 
-       err = mt9m111_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
+       err = mt9m111_set_green_balance(&sd->gspca_dev,
+                                        sensor_settings[GREEN_BALANCE_IDX]);
+       if (err < 0)
+               return err;
 
-       return err;
+       return mt9m111_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
 }
 
 void mt9m111_disconnect(struct sd *sd)
@@ -364,6 +384,38 @@ static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
        return err;
 }
 
+static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
+{
+       int err;
+       u8 data[2];
+       struct sd *sd = (struct sd *) gspca_dev;
+       s32 *sensor_settings = sd->sensor_priv;
+
+       sensor_settings[GREEN_BALANCE_IDX] = val;
+       data[0] = (val & 0xff);
+       data[1] = (val & 0xff00) >> 8;
+
+       PDEBUG(D_V4L2, "Set green balance %d", val);
+       err = m5602_write_sensor(sd, MT9M111_SC_GREEN_1_GAIN,
+                                data, 2);
+       if (err < 0)
+               return err;
+
+       return m5602_write_sensor(sd, MT9M111_SC_GREEN_2_GAIN,
+                                 data, 2);
+}
+
+static int mt9m111_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+       struct sd *sd = (struct sd *) gspca_dev;
+       s32 *sensor_settings = sd->sensor_priv;
+
+       *val = sensor_settings[GREEN_BALANCE_IDX];
+       PDEBUG(D_V4L2, "Read green balance %d", *val);
+       return 0;
+}
+
+
 static void mt9m111_dump_registers(struct sd *sd)
 {
        u8 address, value[2] = {0x00, 0x00};

diff --git a/drivers/media/video/gspca/m5602/m5602_mt9m111.h b/drivers/media/video/gspca/m5602/m5602_mt9m111.h
index d0fe02c..2d39e12 100644 (file)
--- a/drivers/media/video/gspca/m5602/m5602_mt9m111.h
+++ b/drivers/media/video/gspca/m5602/m5602_mt9m111.h
@@ -93,6 +93,7 @@
 
 #define INITIAL_MAX_GAIN                       64
 #define DEFAULT_GAIN                           283
+#define MT9M111_GREEN_GAIN_DEFAULT             0x20
 
 /*****************************************************************************/