linux-kernel - [PATCH 2/3] drm/amd/display: Implement disable custom brightness curve quirk

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Message-ID: <20251221192422.2726883-3-samuel@dionne-riel.com>
Date: Sun, 21 Dec 2025 14:24:19 -0500
From: Samuel Dionne-Riel <samuel@...nne-riel.com>
To: 
Cc: Samuel Dionne-Riel <samuel@...nne-riel.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] drm/amd/display: Implement disable custom brightness curve quirk

Signed-off-by: Samuel Dionne-Riel <samuel@...nne-riel.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 740711ac1037c..840fa53a4d06d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3781,6 +3781,12 @@ static void update_connector_ext_caps(struct amdgpu_dm_connector *aconnector)
 			caps->brightness_mask =
 				panel_backlight_quirk->brightness_mask;
 		}
+		if (panel_backlight_quirk->disable_custom_brightness_curve) {
+			drm_info(drm,
+				 "Applying panel backlight quirk, disable_custom_brightness_curve: %s\n",
+				 panel_backlight_quirk->disable_custom_brightness_curve ? "true" : "false");
+			caps->data_points = 0;
+		}
 	}
 }
 
-- 
2.51.0