[PATCH v2 4/4] drm/i915/display: Error codes for async flip failures

[Arun R Murthy <arun.r.murthy@intel.com>]

For failures in async flip atomic check/commit path return user readable
error codes in struct drm_atomic_state.

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 7035c1fc9033b10327be081f26715446687652c4..893e4d0eb4c3d4d2611720bc7f627b11af81ea8b 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5944,6 +5944,7 @@ static int intel_async_flip_check_uapi(struct intel_atomic_state *state,
 		drm_dbg_kms(display->drm,
 			    "[CRTC:%d:%s] modeset required\n",
 			    crtc->base.base.id, crtc->base.name);
+		state->base.error_code = DRM_MODE_ATOMIC_CRTC_NEED_FULL_MODESET;
 		return -EINVAL;
 	}
 
@@ -5955,6 +5956,7 @@ static int intel_async_flip_check_uapi(struct intel_atomic_state *state,
 		drm_dbg_kms(display->drm,
 			    "[CRTC:%d:%s] async flip disallowed with joiner\n",
 			    crtc->base.base.id, crtc->base.name);
+		state->base.error_code = DRM_MODE_ATOMIC_ASYNC_PIPEJOINER_NOTALLOWED;
 		return -EINVAL;
 	}
 
@@ -6013,6 +6015,7 @@ static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct in
 		drm_dbg_kms(display->drm,
 			    "[CRTC:%d:%s] modeset required\n",
 			    crtc->base.base.id, crtc->base.name);
+		state->base.error_code = DRM_MODE_ATOMIC_CRTC_NEED_FULL_MODESET;
 		return -EINVAL;
 	}
 
@@ -6055,6 +6058,7 @@ static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct in
 				    plane->base.base.id, plane->base.name,
 				    &new_plane_state->hw.fb->format->format,
 				    new_plane_state->hw.fb->modifier);
+			state->base.error_code = DRM_MODE_ATOMIC_ASYNC_MODIFIER_NOT_SUPPORTED;
 			return -EINVAL;
 		}
 

-- 
2.25.1