From 937859485aefed1d9df72feb6ea74a84ff5cfa46 Mon Sep 17 00:00:00 2001 From: Arun R Murthy Date: Tue, 6 Sep 2022 09:48:06 +0530 Subject: [PATCH] drm/i915: Support Async Flip on Linear buffers Starting from Gen12 Async Flip is supported on linear buffers. This patch enables support for async on linear buffer. UseCase: In Hybrid graphics, for hardware unsupported pixel formats it will be converted to linear memory and then composed. v2: Added use case v3: Added FIXME for ICL indicating the restrictions Signed-off-by: Arun R Murthy Reviewed-by: Stanislav Lisovskiy Signed-off-by: Animesh Manna Link: https://patchwork.freedesktop.org/patch/msgid/20220906041806.4095575-1-arun.r.murthy@intel.com --- drivers/gpu/drm/i915/display/intel_display.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 09320e14d75c..0490c6412ab5 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -5995,6 +5995,20 @@ static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct in * this selectively if required. */ switch (new_plane_state->hw.fb->modifier) { + case DRM_FORMAT_MOD_LINEAR: + /* + * FIXME: Async on Linear buffer is supported on ICL as + * but with additional alignment and fbc restrictions + * need to be taken care of. These aren't applicable for + * gen12+. + */ + if (DISPLAY_VER(i915) < 12) { + drm_dbg_kms(&i915->drm, + "[PLANE:%d:%s] Modifier does not support async flips\n", + plane->base.base.id, plane->base.name); + return -EINVAL; + } + case I915_FORMAT_MOD_X_TILED: case I915_FORMAT_MOD_Y_TILED: case I915_FORMAT_MOD_Yf_TILED: -- 2.11.0