V4L/DVB (10073): mt9m111: Add automatic white balance control
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
index b0e6046..2ab1e0f 100644
--- a/drivers/media/video/mt9m111.c
+++ b/drivers/media/video/mt9m111.c
@@ -90,7 +90,7 @@
#define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
#define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
-
+#define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
#define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
#define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
@@ -163,6 +163,7 @@
unsigned int swap_rgb_red_blue:1;
unsigned int swap_yuv_y_chromas:1;
unsigned int swap_yuv_cb_cr:1;
+ unsigned int autowhitebalance:1;
};
static int reg_page_map_set(struct i2c_client *client, const u16 reg)
@@ -702,6 +703,23 @@
return ret;
}
+
+static int mt9m111_set_autowhitebalance(struct soc_camera_device *icd, int on)
+{
+ struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
+ int ret;
+
+ if (on)
+ ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
+ else
+ ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
+
+ if (!ret)
+ mt9m111->autowhitebalance = on;
+
+ return ret;
+}
+
static int mt9m111_get_control(struct soc_camera_device *icd,
struct v4l2_control *ctrl)
{
@@ -738,6 +756,9 @@
case V4L2_CID_EXPOSURE_AUTO:
ctrl->value = mt9m111->autoexposure;
break;
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ ctrl->value = mt9m111->autowhitebalance;
+ break;
}
return 0;
}
@@ -771,6 +792,9 @@
case V4L2_CID_EXPOSURE_AUTO:
ret = mt9m111_set_autoexposure(icd, ctrl->value);
break;
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ ret = mt9m111_set_autowhitebalance(icd, ctrl->value);
+ break;
default:
ret = -EINVAL;
}
@@ -789,6 +813,7 @@
mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
mt9m111_set_global_gain(icd, icd->gain);
mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
+ mt9m111_set_autowhitebalance(icd, mt9m111->autowhitebalance);
return 0;
}
@@ -883,6 +908,7 @@
goto eisis;
mt9m111->autoexposure = 1;
+ mt9m111->autowhitebalance = 1;
mt9m111->swap_rgb_even_odd = 1;
mt9m111->swap_rgb_red_blue = 1;