Hi Maxime,

Thank you for the patch.

On Monday, 16 April 2018 15:36:51 EEST Maxime Ripard wrote:
> From: Mylène Josserand <mylene.josser...@bootlin.com>
> 
> 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.josser...@bootlin.com>
> Signed-off-by: Maxime Ripard <maxime.rip...@bootlin.com>
> ---
>  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 a33e45f8e2b0..28122341fc35 100644
> --- a/drivers/media/i2c/ov5640.c
> +++ b/drivers/media/i2c/ov5640.c
> @@ -189,6 +189,7 @@ 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;
> @@ -2163,6 +2164,21 @@ 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)

To stay consistent with the other functions, I propose calling this 
ov5640_set_ctrl_light_freq().

Apart from that,

Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>

> +{
> +     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);
> @@ -2234,6 +2250,9 @@ 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;
> @@ -2298,6 +2317,11 @@ 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;

-- 
Regards,

Laurent Pinchart



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