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| author | Erik Andrén <erik.andren@gmail.com> | 2009-06-20 08:01:27 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-09-19 00:16:53 -0300 |
| commit | f1f59fe60e38c4c56b8acba9690cd08d86d2ac0e (patch) | |
| tree | 330be9016456d76354e0542732c8a72290b2ec95 /drivers/media/video/gspca/m5602/m5602_ov7660.c | |
| parent | a94e2f2cb91678f106fb31e6fa58b7af451a42e9 (diff) | |
| download | lwn-f1f59fe60e38c4c56b8acba9690cd08d86d2ac0e.tar.gz lwn-f1f59fe60e38c4c56b8acba9690cd08d86d2ac0e.zip | |
V4L/DVB (12980): gspca - m5602-ov7660: Create auto white balance ctrl
Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/gspca/m5602/m5602_ov7660.c')
| -rw-r--r-- | drivers/media/video/gspca/m5602/m5602_ov7660.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/m5602/m5602_ov7660.c b/drivers/media/video/gspca/m5602/m5602_ov7660.c index 9d0cf2ccd1fe..00f8365db1a1 100644 --- a/drivers/media/video/gspca/m5602/m5602_ov7660.c +++ b/drivers/media/video/gspca/m5602/m5602_ov7660.c @@ -24,6 +24,11 @@ static int ov7660_get_blue_gain(struct gspca_dev *gspca_dev, __s32 *val); static int ov7660_set_blue_gain(struct gspca_dev *gspca_dev, __s32 val); static int ov7660_get_red_gain(struct gspca_dev *gspca_dev, __s32 *val); static int ov7660_set_red_gain(struct gspca_dev *gspca_dev, __s32 val); +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); + const static struct ctrl ov7660_ctrls[] = { #define GAIN_IDX 1 @@ -71,6 +76,21 @@ const static struct ctrl ov7660_ctrls[] = { .set = ov7660_set_red_gain, .get = ov7660_get_red_gain }, +#define AUTO_WHITE_BALANCE_IDX 4 + { + { + .id = V4L2_CID_AUTO_WHITE_BALANCE, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "auto white balance", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 1 + }, + .set = ov7660_set_auto_white_balance, + .get = ov7660_get_auto_white_balance + }, + }; static struct v4l2_pix_format ov7660_modes[] = { @@ -182,6 +202,9 @@ int ov7660_init(struct sd *sd) if (err < 0) return err; + err = ov7660_set_auto_white_balance(&sd->gspca_dev, + sensor_settings[AUTO_WHITE_BALANCE_IDX]); + return err; } @@ -278,6 +301,37 @@ static int ov7660_set_red_gain(struct gspca_dev *gspca_dev, __s32 val) return err; } +static int ov7660_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]; + return 0; +} + +static int ov7660_set_auto_white_balance(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 white balance to %d", val); + + sensor_settings[AUTO_WHITE_BALANCE_IDX] = val; + err = m5602_read_sensor(sd, OV7660_COM8, &i2c_data, 1); + if (err < 0) + return err; + + i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1)); + err = m5602_write_sensor(sd, OV7660_COM8, &i2c_data, 1); + + return err; +} + static void ov7660_dump_registers(struct sd *sd) { int address; |