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authorErik Andrén <erik.andren@gmail.com>2009-06-20 20:58:41 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-09-19 07:17:38 +0400
commit7c7ddf1638a45923ab053d1f7818c6d123148b4b (patch)
tree4c3987e1d91f734f8c3591d4b254e717ca425e23
parent456ebe4e92063b92d2672da272bfc7ac70bd8bdd (diff)
downloadlinux-7c7ddf1638a45923ab053d1f7818c6d123148b4b.tar.xz
V4L/DVB (12983): gspca - m5602-ov7660: Add auto exposure ctrl
Signed-off-by: Erik Andrén <erik.andren@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/video/gspca/m5602/m5602_ov7660.c52
1 files changed, 51 insertions, 1 deletions
diff --git a/drivers/media/video/gspca/m5602/m5602_ov7660.c b/drivers/media/video/gspca/m5602/m5602_ov7660.c
index 855c058d5df3..80c64caac353 100644
--- a/drivers/media/video/gspca/m5602/m5602_ov7660.c
+++ b/drivers/media/video/gspca/m5602/m5602_ov7660.c
@@ -30,7 +30,8 @@ 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);
-
+static int ov7660_get_auto_exposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int ov7660_set_auto_exposure(struct gspca_dev *gspca_dev, __s32 val);
const static struct ctrl ov7660_ctrls[] = {
#define GAIN_IDX 1
@@ -106,6 +107,20 @@ const static struct ctrl ov7660_ctrls[] = {
.set = ov7660_set_auto_gain,
.get = ov7660_get_auto_gain
},
+#define AUTO_EXPOSURE_IDX 6
+ {
+ {
+ .id = V4L2_CID_EXPOSURE_AUTO,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "auto exposure",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1
+ },
+ .set = ov7660_set_auto_exposure,
+ .get = ov7660_get_auto_exposure
+ }
};
static struct v4l2_pix_format ov7660_modes[] = {
@@ -227,6 +242,11 @@ int ov7660_init(struct sd *sd)
if (err < 0)
return err;
+ err = ov7660_set_auto_exposure(&sd->gspca_dev,
+ sensor_settings[AUTO_EXPOSURE_IDX]);
+ if (err < 0)
+ return err;
+
err = ov7660_set_blue_gain(&sd->gspca_dev,
sensor_settings[BLUE_BALANCE_IDX]);
if (err < 0)
@@ -391,6 +411,36 @@ static int ov7660_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
return m5602_write_sensor(sd, OV7660_COM8, &i2c_data, 1);
}
+static int ov7660_get_auto_exposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[AUTO_EXPOSURE_IDX];
+ PDEBUG(D_V4L2, "Read auto exposure control %d", *val);
+ return 0;
+}
+
+static int ov7660_set_auto_exposure(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 exposure control to %d", val);
+
+ sensor_settings[AUTO_EXPOSURE_IDX] = val;
+ err = m5602_read_sensor(sd, OV7660_COM8, &i2c_data, 1);
+ if (err < 0)
+ return err;
+
+ i2c_data = ((i2c_data & 0xfe) | ((val & 0x01) << 0));
+
+ return m5602_write_sensor(sd, OV7660_COM8, &i2c_data, 1);
+}
+
static void ov7660_dump_registers(struct sd *sd)
{
int address;