Ville pointed out that my assumption that no unsupported pixel format
can get past the pipe config computation stage to the platform
update_plane callbacks is wrong. The reason is that this function
still checks the old fb->depth value instead of the new pixel_format.
While checking with all the other places that use this I've noticed
that intel_framebuffer_init already has all the platform checks we
need, so replace those checks with a WARN_ON.
Since fb->depth isn't set for YUV pixel formats and since we already
can't create an fb with an rgb layout not support on the running
platform I /think/ this patch doesn't fix any bug.
But it surely looks better!
v2: BGR formats are also only gen4+, so add the corresponding WARN_ON,
too (Ville).
Cc: Ville Syrj?l? <ville.syrjala at linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 31 +++++++++++++++++++++----------
1 file changed, 21 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3f3a3dc..5e8b91f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7394,23 +7394,34 @@ pipe_config_set_bpp(struct drm_crtc *crtc,
struct drm_connector *connector;
int bpp;
- switch (fb->depth) {
- case 8:
+ switch (fb->pixel_format) {
+ case DRM_FORMAT_C8:
bpp = 8*3; /* since we go through a colormap */
break;
- case 15:
- case 16:
+ case DRM_FORMAT_XRGB1555:
+ case DRM_FORMAT_ARGB1555:
+ /* checked in intel_framebuffer_init already */
+ if (WARN_ON(INTEL_INFO(dev)->gen > 3))
+ return -EINVAL;
+ case DRM_FORMAT_RGB565:
bpp = 6*3; /* min is 18bpp */
break;
- case 24:
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ /* checked in intel_framebuffer_init already */
+ if (WARN_ON(INTEL_INFO(dev)->gen < 4))
+ return -EINVAL;
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
bpp = 8*3;
break;
- case 30:
- if (INTEL_INFO(dev)->gen < 4) {
- DRM_DEBUG_KMS("10 bpc not supported on gen2/3\n");
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_ARGB2101010:
+ case DRM_FORMAT_XBGR2101010:
+ case DRM_FORMAT_ABGR2101010:
+ /* checked in intel_framebuffer_init already */
+ if (WARN_ON(INTEL_INFO(dev)->gen < 4))
return -EINVAL;
- }
-
bpp = 10*3;
break;
/* TODO: gen4+ supports 16 bpc floating point, too. */
--
1.7.10.4
