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V4L/DVB (11470): gspca - m5602-mt9m111: Implement an auto white balancing control

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Signed-off-by: Erik Andr?n <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Erik Andr?n 2009-01-09 14:03:27 -03:00 committed by Mauro Carvalho Chehab
parent 320aaab872
commit b154044a02
1 changed files with 50 additions and 0 deletions
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50
drivers/media/video/gspca/m5602/m5602_mt9m111.c
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@ -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;