From: Mylène Josserand <mylene.josserand@xxxxxxxxxxx>
Add the light frequency control to be able to set the frequency
to manual (50Hz or 60Hz) or auto.
Signed-off-by: Mylène Josserand <mylene.josserand@xxxxxxxxxxx>
Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>
---
drivers/media/i2c/ov5640.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index f5e867d47ab8..e6a23eb55c1d 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -186,6 +186,7 @@ struct ov5640_ctrls {
};
struct v4l2_ctrl *auto_focus;
struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *light_freq;
struct v4l2_ctrl *saturation;
struct v4l2_ctrl *contrast;
struct v4l2_ctrl *hue;
@@ -2102,6 +2103,21 @@ static int ov5640_set_ctrl_focus(struct ov5640_dev *sensor, int value)
BIT(1), value ? BIT(1) : 0);
}
+static int ov5640_set_ctl_light_freq(struct ov5640_dev *sensor, int value)
+{
+ int ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7),
+ (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ?
+ 0: BIT(7));
+ if (ret)
+ return ret;
+
+ return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2),
+ (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ?
+ BIT(2): 0);
+}
+
static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
@@ -2173,6 +2189,9 @@ static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_FOCUS_AUTO:
ret = ov5640_set_ctrl_focus(sensor, ctrl->val);
break;
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ ret = ov5640_set_ctl_light_freq(sensor, ctrl->val);
+ break;
default:
ret = -EINVAL;
break;
@@ -2237,6 +2256,11 @@ static int ov5640_init_controls(struct ov5640_dev *sensor)
ctrls->auto_focus = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_AUTO,
0, 1, 1, 0);
+ ctrls->light_freq =
+ v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_POWER_LINE_FREQUENCY,
+ V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
+ V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
if (hdl->error) {
ret = hdl->error;
--
2.14.3
