[media] V4L: Add an extended camera white balance control

This patch adds V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE control which is
an extended version of the V4L2_CID_AUTO_WHITE_BALANCE control,
including white balance presets. The following presets are defined:

 - V4L2_WHITE_BALANCE_INCANDESCENT,
 - V4L2_WHITE_BALANCE_FLUORESCENT,
 - V4L2_WHITE_BALANCE_FLUORESCENT_H,
 - V4L2_WHITE_BALANCE_HORIZON,
 - V4L2_WHITE_BALANCE_DAYLIGHT,
 - V4L2_WHITE_BALANCE_FLASH,
 - V4L2_WHITE_BALANCE_CLOUDY,
 - V4L2_WHITE_BALANCE_SHADE.

Signed-off-by: HeungJun Kim <riverful.kim@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index dfd209816df6..85c4e8f1090f 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1709,6 +1709,20 @@ enum  v4l2_exposure_auto_type {
 
 #define V4L2_CID_AUTO_EXPOSURE_BIAS             (V4L2_CID_CAMERA_CLASS_BASE+19)
 
+#define V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE    (V4L2_CID_CAMERA_CLASS_BASE+20)
+enum v4l2_auto_n_preset_white_balance {
+        V4L2_WHITE_BALANCE_MANUAL               = 0,
+        V4L2_WHITE_BALANCE_AUTO                 = 1,
+        V4L2_WHITE_BALANCE_INCANDESCENT         = 2,
+        V4L2_WHITE_BALANCE_FLUORESCENT          = 3,
+        V4L2_WHITE_BALANCE_FLUORESCENT_H        = 4,
+        V4L2_WHITE_BALANCE_HORIZON              = 5,
+        V4L2_WHITE_BALANCE_DAYLIGHT             = 6,
+        V4L2_WHITE_BALANCE_FLASH                = 7,
+        V4L2_WHITE_BALANCE_CLOUDY               = 8,
+        V4L2_WHITE_BALANCE_SHADE                = 9,
+};
+
 /* FM Modulator class control IDs */
 #define V4L2_CID_FM_TX_CLASS_BASE               (V4L2_CTRL_CLASS_FM_TX | 0x900)
 #define V4L2_CID_FM_TX_CLASS                    (V4L2_CTRL_CLASS_FM_TX | 1)