linux-kernel - [PATCH v2] drm: panel-backlight-quirks: Add Framework 16 panel

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Message-Id: <20250228-framework16-drm-quirks-v2-1-c7faf86f5e9d@doridian.net>
Date: Fri, 28 Feb 2025 12:55:38 -0800
From: Mark Dietzer via B4 Relay <devnull+git.doridian.net@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Mark Dietzer <git@...idian.net>, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH v2] drm: panel-backlight-quirks: Add Framework 16 panel

From: Mark Dietzer <git@...idian.net>

Similarly for the Framework 13 panels already handled in those quirks,
the 16 can be helped by the same kind of patch.

I have run this on my own 16 for multiple months (hard coding the value to
0 before the quirks made it upstream) and it has resulted in a darker
minimum brightness (as expected) and no issues.

The Framework community threads between the 13 and 16 for this improvement
are the same one, so user reports in the link below will be mixed and
likely more focused on the 13.

Link: https://community.frame.work/t/solved-even-lower-screen-brightness/25711/60

Signed-off-by: Mark Dietzer <git@...idian.net>
Reviewed-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/gpu/drm/drm_panel_backlight_quirks.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/drm_panel_backlight_quirks.c b/drivers/gpu/drm/drm_panel_backlight_quirks.c
index c477d98ade2b41314d4218281ced7d3c4d087769..52aa2a7fa63e5b0fefc1d94bf1f9ace8e2af8962 100644
--- a/drivers/gpu/drm/drm_panel_backlight_quirks.c
+++ b/drivers/gpu/drm/drm_panel_backlight_quirks.c
@@ -41,6 +41,14 @@ static const struct drm_panel_min_backlight_quirk drm_panel_min_backlight_quirks
 		.ident.name = "NE135A1M-NY1",
 		.min_brightness = 0,
 	},
+	/* 16 inch panel */
+	{
+		.dmi_match.field = DMI_BOARD_VENDOR,
+		.dmi_match.value = "Framework",
+		.ident.panel_id = drm_edid_encode_panel_id('B', 'O', 'E', 0x0cb4),
+		.ident.name = "NE160QDM-NZ6",
+		.min_brightness = 0,
+	},
 };
 
 static bool drm_panel_min_backlight_quirk_matches(const struct drm_panel_min_backlight_quirk *quirk,

---
base-commit: 76544811c850a1f4c055aa182b513b7a843868ea
change-id: 20250228-framework16-drm-quirks-74b58d007386

Best regards,
-- 
Mark Dietzer <git@...idian.net>