linux-kernel - Re: [PATCH RFC v5 04/10] drm/atomic: Add pixel source to plane state dump

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Message-ID: <de6abbcf-9c0d-f51e-b140-938f2c537f74@linaro.org>
Date:   Sat, 29 Jul 2023 03:04:07 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Jessica Zhang <quic_jesszhan@...cinc.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>
Cc:     quic_abhinavk@...cinc.com, ppaalanen@...il.com,
        contact@...rsion.fr, laurent.pinchart@...asonboard.com,
        sebastian.wick@...hat.com, ville.syrjala@...ux.intel.com,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        wayland-devel@...ts.freedesktop.org
Subject: Re: [PATCH RFC v5 04/10] drm/atomic: Add pixel source to plane state
 dump

On 28/07/2023 20:02, Jessica Zhang wrote:
> Add pixel source to the atomic plane state dump
> 
> Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
> ---
>   drivers/gpu/drm/drm_atomic.c        |  1 +
>   drivers/gpu/drm/drm_crtc_internal.h |  2 ++
>   drivers/gpu/drm/drm_plane.c         | 12 ++++++++++++
>   3 files changed, 15 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index b4c6ffc438da..c38014abc590 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -713,6 +713,7 @@ static void drm_atomic_plane_print_state(struct drm_printer *p,
>   
>   	drm_printf(p, "plane[%u]: %s\n", plane->base.id, plane->name);
>   	drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
> +	drm_printf(p, "\tpixel-source=%s\n", drm_plane_get_pixel_source_name(state->pixel_source));
>   	drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0);
>   	if (state->fb)
>   		drm_framebuffer_print_info(p, 2, state->fb);
> diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
> index 501a10edd0e1..75b59ec9f1be 100644
> --- a/drivers/gpu/drm/drm_crtc_internal.h
> +++ b/drivers/gpu/drm/drm_crtc_internal.h
> @@ -38,6 +38,7 @@ enum drm_color_encoding;
>   enum drm_color_range;
>   enum drm_connector_force;
>   enum drm_mode_status;
> +enum drm_plane_pixel_source;
>   
>   struct drm_atomic_state;
>   struct drm_bridge;
> @@ -267,6 +268,7 @@ int drm_plane_check_pixel_format(struct drm_plane *plane,
>   				 u32 format, u64 modifier);
>   struct drm_mode_rect *
>   __drm_plane_get_damage_clips(const struct drm_plane_state *state);
> +const char *drm_plane_get_pixel_source_name(enum drm_plane_pixel_source pixel_source);
>   
>   /* drm_bridge.c */
>   void drm_bridge_detach(struct drm_bridge *bridge);
> diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
> index f342cf15412b..4188b3491625 100644
> --- a/drivers/gpu/drm/drm_plane.c
> +++ b/drivers/gpu/drm/drm_plane.c
> @@ -1487,6 +1487,18 @@ __drm_plane_get_damage_clips(const struct drm_plane_state *state)
>   					state->fb_damage_clips->data : NULL);
>   }
>   
> +const char *drm_plane_get_pixel_source_name(enum drm_plane_pixel_source pixel_source)
> +{
> +	switch(pixel_source) {
> +	case DRM_PLANE_PIXEL_SOURCE_NONE:
> +		return "NONE";
> +	case DRM_PLANE_PIXEL_SOURCE_FB:
> +		return "fb";
> +	default:
> +		return "";
> +	}
> +}

Please use DRM_ENUM_NAME_FN instead.

> +
>   /**
>    * drm_plane_get_damage_clips - Returns damage clips.
>    * @state: Plane state.
> 

-- 
With best wishes
Dmitry