Commit b154044a authored by Erik Andr?n's avatar Erik Andr?n Committed by Mauro Carvalho Chehab
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V4L/DVB (11470): gspca - m5602-mt9m111: Implement an auto white balancing control 



Signed-off-by: default avatarErik Andr?n <erik.andren@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 320aaab8

drivers/media/video/gspca/m5602/m5602_mt9m111.c

+50 −0
Original line number Diff line number Diff line
@@ -24,6 +24,11 @@ static int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val); 
static int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val);

static int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val);

static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val);

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 struct v4l2_pix_format mt9m111_modes[] = {

	{
@@ -81,6 +86,20 @@ const static struct ctrl mt9m111_ctrls[] = { 
		},

		.set = mt9m111_set_gain,

		.get = mt9m111_get_gain

	},

#define AUTO_WHITE_BALANCE_IDX 3

	{

		{

			.id             = V4L2_CID_AUTO_WHITE_BALANCE,

			.type           = V4L2_CTRL_TYPE_BOOLEAN,

			.name           = "auto white balance",

			.minimum        = 0,

			.maximum        = 1,

			.step           = 1,

			.default_value  = 0,

		},

		.set = mt9m111_set_auto_white_balance,

		.get = mt9m111_get_auto_white_balance

	}

};
@@ -273,6 +292,37 @@ static int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val) 
	return 0;

}



static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,

					  __s32 val)

{

	struct sd *sd = (struct sd *) gspca_dev;

	s32 *sensor_settings = sd->sensor_priv;

	int err;

	u8 data[2];



	err = m5602_read_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);

	if (err < 0)

		return err;



	sensor_settings[AUTO_WHITE_BALANCE_IDX] = val & 0x01;

	data[0] = ((data[0] & 0xfd) | ((val & 0x01) << 1));



	err = m5602_write_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);



	PDEBUG(D_V4L2, "Set auto white balance %d", val);

	return err;

}



static int mt9m111_get_auto_white_balance(struct gspca_dev *gspca_dev,

					  __s32 *val) {

	struct sd *sd = (struct sd *) gspca_dev;

	s32 *sensor_settings = sd->sensor_priv;



	*val = sensor_settings[AUTO_WHITE_BALANCE_IDX];

	PDEBUG(D_V4L2, "Read auto white balance %d", *val);

	return 0;

}



static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)

{

	int err, tmp;