Commit 916ecc0d authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Mario Limonciello
Browse files

drm: panel-backlight-quirks: Add Framework 13 matte panel 

The value of "min_input_signal" returned from ATIF on a Framework AMD 13
is "12". This leads to a fairly bright minimum display backlight.

Add a quirk to override that the minimum backlight PWM to "0" which
leads to a much lower minimum brightness, which is still visible.

Tested on a Framework AMD 13 BIOS 3.05 with the matte panel.

Link: https://community.frame.work/t/25711/9
Link: https://community.frame.work/t/47036


Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Tested-by: default avatarDustin L. Howett <dustin@howett.net>
Reviewed-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241111-amdgpu-min-backlight-quirk-v7-3-f662851fda69@weissschuh.net
parent c2753b24

drivers/gpu/drm/drm_panel_backlight_quirks.c

+8 −0
Original line number Diff line number Diff line
@@ -17,6 +17,14 @@ struct drm_panel_min_backlight_quirk { 
};



static const struct drm_panel_min_backlight_quirk drm_panel_min_backlight_quirks[] = {

	/* 13 inch matte panel */

	{

		.dmi_match.field = DMI_BOARD_VENDOR,

		.dmi_match.value = "Framework",

		.ident.panel_id = drm_edid_encode_panel_id('B', 'O', 'E', 0x0bca),

		.ident.name = "NE135FBM-N41",

		.min_brightness = 0,

	},

};



static bool drm_panel_min_backlight_quirk_matches(const struct drm_panel_min_backlight_quirk *quirk,