linux-kernel - Re: [PATCH] media: vimc: implement basic v4l2-ctrls

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Date:   Wed, 22 Aug 2018 08:30:14 +0200
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Guilherme Gallo <gagallo7@...il.com>,
        lkcamp@...ts.libreplanetbr.org, helen.koike@...labora.com,
        mchehab@...nel.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: vimc: implement basic v4l2-ctrls

Hi Guilherme,

Thank you for your patch. It looks good, but can you add support for V4L2_CID_SATURATION
as well? The TPG supports that as well, so there is no reason to leave that out.

Thank you!

	Hans

On 08/22/2018 03:22 AM, Guilherme Gallo wrote:
> Implement brightness, contrast and hue controls in vimc-sensor
> 
> Signed-off-by: Guilherme Alcarde Gallo <gagallo7@...il.com>
> ---
>  drivers/media/platform/vimc/vimc-sensor.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
> index 605e2a2d5dd5..ecc82cd60900 100644
> --- a/drivers/media/platform/vimc/vimc-sensor.c
> +++ b/drivers/media/platform/vimc/vimc-sensor.c
> @@ -316,6 +316,15 @@ static int vimc_sen_s_ctrl(struct v4l2_ctrl *ctrl)
>  	case V4L2_CID_VFLIP:
>  		tpg_s_vflip(&vsen->tpg, ctrl->val);
>  		break;
> +	case V4L2_CID_BRIGHTNESS:
> +		tpg_s_brightness(&vsen->tpg, ctrl->val);
> +		break;
> +	case V4L2_CID_CONTRAST:
> +		tpg_s_contrast(&vsen->tpg, ctrl->val);
> +		break;
> +	case V4L2_CID_HUE:
> +		tpg_s_hue(&vsen->tpg, ctrl->val);
> +		break;
>  	default:
>  		return -EINVAL;
>  	}
> @@ -377,6 +386,12 @@ static int vimc_sen_comp_bind(struct device *comp, struct device *master,
>  			  V4L2_CID_VFLIP, 0, 1, 1, 0);
>  	v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
>  			  V4L2_CID_HFLIP, 0, 1, 1, 0);
> +	v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
> +			  V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
> +	v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
> +			  V4L2_CID_CONTRAST, 0, 255, 1, 128);
> +	v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
> +			  V4L2_CID_HUE, 0, 255, 1, 128);
>  	vsen->sd.ctrl_handler = &vsen->hdl;
>  	if (vsen->hdl.error) {
>  		ret = vsen->hdl.error;
>