[Intel-gfx] [PATCH 2/2] drm/i915: Allow ICL pipe "HDR mode" when the cursor is visible

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Turns out the cursor is compatible with the pipe "HDR mode". It's
only the actual SDR planes that get entirely bypassed during
blending. So let's ignore the cursor when checking if we have
any planes active that aren't HDR compatible. This fixes the
regressions in the kms_cursor_crc and kms_plane_cursor tests.

Cc: Uma Shankar <uma.shankar at intel.com>
Cc: Shashank Sharma <shashank.sharma at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110579
Fixes: 09b25812db10 ("drm/i915: Enable pipe HDR mode on ICL if only HDR planes are used")
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 28042a16084d..cc1203901ef4 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8927,7 +8927,8 @@ static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state)
 			PIPEMISC_YUV420_MODE_FULL_BLEND;
 
 	if (INTEL_GEN(dev_priv) >= 11 &&
-	    (crtc_state->active_planes & ~icl_hdr_plane_mask()) == 0)
+	    (crtc_state->active_planes & ~(icl_hdr_plane_mask() |
+					   BIT(PLANE_CURSOR))) == 0)
 		val |= PIPEMISC_HDR_MODE_PRECISION;
 
 	I915_WRITE(PIPEMISC(crtc->pipe), val);
-- 
2.21.0