From: Ville Syrjälä ville.syrjala@linux.intel.com

We forgot to set .has_alpha=true for the A+CCS formats when the code started to consult .has_alpha. This manifests as A+CCS being treated as X+CCS which means no per-pixel alpha blending. Fix the format list appropriately.

Cc: stable@vger.kernel.org Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Matt Roper matthew.d.roper@intel.com Cc: Heinrich Fink heinrich.fink@daqri.com Reported-by: Heinrich Fink heinrich.fink@daqri.com Tested-by: Heinrich Fink heinrich.fink@daqri.com Fixes: b20815255693 ("drm/i915: Add plane alpha blending support, v2.") Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20190603142500.25680-1-ville.s... Reviewed-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com (cherry picked from commit 38f300410f3e15b6fec76c8d8baed7111b5ea4e4) Signed-off-by: Jani Nikula jani.nikula@intel.com --- drivers/gpu/drm/i915/intel_display.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index ceb78f44f087..b69440cf41ea 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2432,10 +2432,14 @@ static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier) * main surface. */ static const struct drm_format_info ccs_formats[] = { - { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, }, - { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, }, - { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, }, - { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, }, + { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2, + .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, }, + { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2, + .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, }, + { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2, + .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, }, + { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2, + .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, }, };

static const struct drm_format_info *