1 files changed, 47 insertions, 1 deletions

diff --git a/drivers/media/video/gspca/m5602/m5602_mt9m111.c b/drivers/media/video/gspca/m5602/m5602_mt9m111.c
index c1ff4770e3a..8bdd29c7d8f 100644
--- a/drivers/media/video/gspca/m5602/m5602_mt9m111.c
+++ b/drivers/media/video/gspca/m5602/m5602_mt9m111.c
@@ -30,6 +30,8 @@ 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 int mt9m111_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val);
+static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val);
 
 static struct v4l2_pix_format mt9m111_modes[] = {
         {
@@ -117,7 +119,21 @@ const static struct ctrl mt9m111_ctrls[] = {
                 .set = mt9m111_set_green_balance,
                 .get = mt9m111_get_green_balance
         },
-
+#define BLUE_BALANCE_IDX 5
+        {
+                {
+                        .id             = V4L2_CID_BLUE_BALANCE,
+                        .type           = V4L2_CTRL_TYPE_INTEGER,
+                        .name           = "blue balance",
+                        .minimum        = 0x00,
+                        .maximum        = 0x7ff,
+                        .step           = 0x1,
+                        .default_value  = MT9M111_BLUE_GAIN_DEFAULT,
+                        .flags          = V4L2_CTRL_FLAG_SLIDER
+                },
+                .set = mt9m111_set_blue_balance,
+                .get = mt9m111_get_blue_balance
+        },
 };
 
 static void mt9m111_dump_registers(struct sd *sd);
@@ -219,6 +235,11 @@ int mt9m111_init(struct sd *sd)
         if (err < 0)
                 return err;
 
+        err = mt9m111_set_blue_balance(&sd->gspca_dev,
+                                         sensor_settings[BLUE_BALANCE_IDX]);
+        if (err < 0)
+                return err;
+
         return mt9m111_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
 }
 
@@ -415,6 +436,31 @@ static int mt9m111_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val)
         return 0;
 }
 
+static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
+{
+        u8 data[2];
+        struct sd *sd = (struct sd *) gspca_dev;
+        s32 *sensor_settings = sd->sensor_priv;
+
+        sensor_settings[BLUE_BALANCE_IDX] = val;
+        data[0] = (val & 0xff);
+        data[1] = (val & 0xff00) >> 8;
+
+        PDEBUG(D_V4L2, "Set blue balance %d", val);
+
+        return m5602_write_sensor(sd, MT9M111_SC_BLUE_GAIN,
+                                  data, 2);
+}
+
+static int mt9m111_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
+{
+        struct sd *sd = (struct sd *) gspca_dev;
+        s32 *sensor_settings = sd->sensor_priv;
+
+        *val = sensor_settings[BLUE_BALANCE_IDX];
+        PDEBUG(D_V4L2, "Read blue balance %d", *val);
+        return 0;
+}
 
 static void mt9m111_dump_registers(struct sd *sd)
 {