From: jsg <jsg@openbsd.org>
Date: Tue, 19 Sep 2023 12:39:18 +0000 (+0000)
Subject: drm/amd/display: enable cursor degamma for DCN3+ DRM legacy gamma
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=b9fd6188ab9ae03a8c8d40b3ea11adc7d1ac5791;p=openbsd

drm/amd/display: enable cursor degamma for DCN3+ DRM legacy gamma

From Melissa Wen
e1769b1dfcaebb7e4272528fa2f198c6549f619b in linux-6.1.y/6.1.54
57a943ebfcdb4a97fbb409640234bdb44bfa1953 in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index 3c50b3ff795..cd6e99cf74a 100644
--- a/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -1269,6 +1269,13 @@ void handle_cursor_update(struct drm_plane *plane,
 	attributes.rotation_angle    = 0;
 	attributes.attribute_flags.value = 0;
 
+	/* Enable cursor degamma ROM on DCN3+ for implicit sRGB degamma in DRM
+	 * legacy gamma setup.
+	 */
+	if (crtc_state->cm_is_degamma_srgb &&
+	    adev->dm.dc->caps.color.dpp.gamma_corr)
+		attributes.attribute_flags.bits.ENABLE_CURSOR_DEGAMMA = 1;
+
 	attributes.pitch = afb->base.pitches[0] / afb->base.format->cpp[0];
 
 	if (crtc_state->stream) {