linux-kernel - Re: [PATCH v6 4/4] drm/rockchip: Implement CRC debugfs API

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Date:   Mon, 6 Mar 2017 08:55:27 +0800
From:   Mark yao <mark.yao@...k-chips.com>
To:     Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        linux-kernel@...r.kernel.org
Cc:     Ville Syrjälä <ville.syrjala@...ux.intel.com>,
        Sean Paul <seanpaul@...omium.org>,
        Thierry Reding <thierry.reding@...il.com>,
        intel-gfx-trybot@...ts.freedesktop.org,
        Emil Velikov <emil.l.velikov@...il.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        dri-devel@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org,
        David Airlie <airlied@...ux.ie>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 4/4] drm/rockchip: Implement CRC debugfs API

On 2017年03月03日 21:39, Tomeu Vizoso wrote:
> Implement the .set_crc_source() callback and call the DP helpers
> accordingly to start and stop CRC capture.
>
> This is only done if this CRTC is currently using the eDP connector.
>
> v3: Remove superfluous check on rockchip_crtc_state->output_type
>
> v6: Remove superfluous variable
>
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
> ---

looks good for me

Acked-by: Mark Yao <mark.yao@...k-chips.com>

>   drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 41 +++++++++++++++++++++++++++++
>   1 file changed, 41 insertions(+)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index 94d7b7327ff7..17ab16c4b922 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -19,6 +19,7 @@
>   #include <drm/drm_crtc_helper.h>
>   #include <drm/drm_flip_work.h>
>   #include <drm/drm_plane_helper.h>
> +#include <drm/bridge/analogix_dp.h>
>   
>   #include <linux/kernel.h>
>   #include <linux/module.h>
> @@ -1111,6 +1112,45 @@ static void vop_crtc_destroy_state(struct drm_crtc *crtc,
>   	kfree(s);
>   }
>   
> +static struct drm_connector *vop_get_edp_connector(struct vop *vop)
> +{
> +	struct drm_crtc *crtc = &vop->crtc;
> +	struct drm_connector *connector;
> +
> +	mutex_lock(&crtc->dev->mode_config.mutex);
> +	drm_for_each_connector(connector, crtc->dev)
> +		if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
> +			mutex_unlock(&crtc->dev->mode_config.mutex);
> +			return connector;
> +		}
> +	mutex_unlock(&crtc->dev->mode_config.mutex);
> +
> +	return NULL;
> +}
> +
> +static int vop_crtc_set_crc_source(struct drm_crtc *crtc,
> +				   const char *source_name, size_t *values_cnt)
> +{
> +	struct vop *vop = to_vop(crtc);
> +	struct drm_connector *connector;
> +	int ret;
> +
> +	connector = vop_get_edp_connector(vop);
> +	if (!connector)
> +		return -EINVAL;
> +
> +	*values_cnt = 3;
> +
> +	if (source_name && strcmp(source_name, "auto") == 0)
> +		ret = analogix_dp_start_crc(connector);
> +	else if (!source_name)
> +		ret = analogix_dp_stop_crc(connector);
> +	else
> +		ret = -EINVAL;
> +
> +	return ret;
> +}
> +
>   static const struct drm_crtc_funcs vop_crtc_funcs = {
>   	.set_config = drm_atomic_helper_set_config,
>   	.page_flip = drm_atomic_helper_page_flip,
> @@ -1120,6 +1160,7 @@ static const struct drm_crtc_funcs vop_crtc_funcs = {
>   	.atomic_destroy_state = vop_crtc_destroy_state,
>   	.enable_vblank = vop_crtc_enable_vblank,
>   	.disable_vblank = vop_crtc_disable_vblank,
> +	.set_crc_source = vop_crtc_set_crc_source,
>   };
>   
>   static void vop_fb_unref_worker(struct drm_flip_work *work, void *val)


-- 
Ｍark Yao