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V4L/DVB (12982): gspca - m5602-ov7660: Add auto gain ctrl

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Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Erik Andrén 2009-06-20 09:29:00 -03:00 committed by Mauro Carvalho Chehab
parent 36e64d5cec
commit 456ebe4e92
1 changed files with 50 additions and 1 deletions
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51
drivers/media/video/gspca/m5602/m5602_ov7660.c
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@ -28,6 +28,8 @@ static int ov7660_get_auto_white_balance(struct gspca_dev *gspca_dev,
__s32 *val);
static int ov7660_set_auto_white_balance(struct gspca_dev *gspca_dev,
__s32 val);
static int ov7660_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val);
static int ov7660_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val);
const static struct ctrl ov7660_ctrls[] = {
@ -90,7 +92,20 @@ const static struct ctrl ov7660_ctrls[] = {
.set = ov7660_set_auto_white_balance,
.get = ov7660_get_auto_white_balance
},
#define AUTO_GAIN_CTRL_IDX 5
{
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "auto gain control",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 1
},
.set = ov7660_set_auto_gain,
.get = ov7660_get_auto_gain
},
};
static struct v4l2_pix_format ov7660_modes[] = {
@ -207,6 +222,11 @@ int ov7660_init(struct sd *sd)
if (err < 0)
return err;
err = ov7660_set_auto_gain(&sd->gspca_dev,
sensor_settings[AUTO_GAIN_CTRL_IDX]);
if (err < 0)
return err;
err = ov7660_set_blue_gain(&sd->gspca_dev,
sensor_settings[BLUE_BALANCE_IDX]);
if (err < 0)
@ -342,6 +362,35 @@ static int ov7660_set_auto_white_balance(struct gspca_dev *gspca_dev,
return err;
}
static int ov7660_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[AUTO_GAIN_CTRL_IDX];
PDEBUG(D_V4L2, "Read auto gain control %d", *val);
return 0;
}
static int ov7660_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
u8 i2c_data;
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
PDEBUG(D_V4L2, "Set auto gain control to %d", val);
sensor_settings[AUTO_GAIN_CTRL_IDX] = val;
err = m5602_read_sensor(sd, OV7660_COM8, &i2c_data, 1);
if (err < 0)
return err;
i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
return m5602_write_sensor(sd, OV7660_COM8, &i2c_data, 1);
}
static void ov7660_dump_registers(struct sd *sd)
{
int address;