On Thu, Aug 24, 2017 at 10:10:59PM +0300, ville.syrj...@linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
> 
> Currently we only check that the plane supports the pixel format of the
> fb we're about to feed to it. Extend it to check also the modifier, and
> more specifically that the combination of the format and modifier is
> supported.
> 
> Cc: dri-devel@lists.freedesktop.org
> Cc: Ben Widawsky <b...@bwidawsk.net>
> Cc: Jason Ekstrand <ja...@jlekstrand.net>
> Cc: Daniel Stone <dani...@collabora.com>
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>

I think Daniel Stone is on the hook to augment kms_ccs to properly test
this all in igt. Would be nice to add the corresponding Testcase: lines
when that's done.

With the test coverage gap addressed:

Reviewed-by: Daniel Vetter <daniel.vet...@ffwll.ch>


> ---
>  drivers/gpu/drm/drm_atomic.c        |  8 +++++---
>  drivers/gpu/drm/drm_crtc.c          |  8 +++++---
>  drivers/gpu/drm/drm_crtc_internal.h |  4 ++--
>  drivers/gpu/drm/drm_plane.c         | 31 +++++++++++++++++++++++++------
>  4 files changed, 37 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 2fd383d7253a..51cd05a7360b 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -884,12 +884,14 @@ static int drm_atomic_plane_check(struct drm_plane 
> *plane,
>       }
>  
>       /* Check whether this plane supports the fb pixel format. */
> -     ret = drm_plane_check_pixel_format(plane, state->fb->format->format);
> +     ret = drm_plane_check_pixel_format(plane, state->fb->format->format,
> +                                        state->fb->modifier);
>       if (ret) {
>               struct drm_format_name_buf format_name;
> -             DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
> +             DRM_DEBUG_ATOMIC("Invalid pixel format %s, modifier 0x%llx\n",
>                                drm_get_format_name(state->fb->format->format,
> -                                                  &format_name));
> +                                                  &format_name),
> +                              state->fb->modifier);
>               return ret;
>       }
>  
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index 5af25ce5bf7c..dd54deb75c0d 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -625,12 +625,14 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
>                */
>               if (!crtc->primary->format_default) {
>                       ret = drm_plane_check_pixel_format(crtc->primary,
> -                                                        fb->format->format);
> +                                                        fb->format->format,
> +                                                        fb->modifier);
>                       if (ret) {
>                               struct drm_format_name_buf format_name;
> -                             DRM_DEBUG_KMS("Invalid pixel format %s\n",
> +                             DRM_DEBUG_KMS("Invalid pixel format %s, 
> modifier 0x%llx\n",
>                                             
> drm_get_format_name(fb->format->format,
> -                                                               
> &format_name));
> +                                                               &format_name),
> +                                           fb->modifier);
>                               goto out;
>                       }
>               }
> diff --git a/drivers/gpu/drm/drm_crtc_internal.h 
> b/drivers/gpu/drm/drm_crtc_internal.h
> index a43582076b20..81865841b656 100644
> --- a/drivers/gpu/drm/drm_crtc_internal.h
> +++ b/drivers/gpu/drm/drm_crtc_internal.h
> @@ -194,8 +194,8 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
>  /* drm_plane.c */
>  int drm_plane_register_all(struct drm_device *dev);
>  void drm_plane_unregister_all(struct drm_device *dev);
> -int drm_plane_check_pixel_format(const struct drm_plane *plane,
> -                              u32 format);
> +int drm_plane_check_pixel_format(struct drm_plane *plane,
> +                              u32 format, u64 modifier);
>  
>  /* 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 7a00351d5b5d..c63a81e32e23 100644
> --- a/drivers/gpu/drm/drm_plane.c
> +++ b/drivers/gpu/drm/drm_plane.c
> @@ -555,16 +555,33 @@ int drm_mode_getplane(struct drm_device *dev, void 
> *data,
>       return 0;
>  }
>  
> -int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
> +int drm_plane_check_pixel_format(struct drm_plane *plane,
> +                              u32 format, u64 modifier)
>  {
>       unsigned int i;
>  
>       for (i = 0; i < plane->format_count; i++) {
>               if (format == plane->format_types[i])
> -                     return 0;
> +                     break;
> +     }
> +     if (i == plane->format_count)
> +             return -EINVAL;
> +
> +     if (!plane->modifier_count)
> +             return 0;
> +
> +     for (i = 0; i < plane->modifier_count; i++) {
> +             if (modifier == plane->modifiers[i])
> +                     break;
>       }
> +     if (i == plane->modifier_count)
> +             return -EINVAL;
>  
> -     return -EINVAL;
> +     if (plane->funcs->format_mod_supported &&
> +         !plane->funcs->format_mod_supported(plane, format, modifier))
> +             return -EINVAL;
> +
> +     return 0;
>  }
>  
>  /*
> @@ -609,12 +626,14 @@ static int __setplane_internal(struct drm_plane *plane,
>       }
>  
>       /* Check whether this plane supports the fb pixel format. */
> -     ret = drm_plane_check_pixel_format(plane, fb->format->format);
> +     ret = drm_plane_check_pixel_format(plane, fb->format->format,
> +                                        fb->modifier);
>       if (ret) {
>               struct drm_format_name_buf format_name;
> -             DRM_DEBUG_KMS("Invalid pixel format %s\n",
> +             DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n",
>                             drm_get_format_name(fb->format->format,
> -                                               &format_name));
> +                                               &format_name),
> +                           fb->modifier);
>               goto out;
>       }
>  
> -- 
> 2.13.0
> 
> _______________________________________________
> Intel-gfx mailing list
> intel-...@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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