From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 40FB619992E; Sun, 26 Jan 2025 14:53:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737903205; cv=none; b=S0AkV1cR/uJzBL/xl5Qelid5oPZ2Lrp+vna/p9w5Ajh9hI/WD/QFWmM+v1MVTtZY4SrRKWDIvdYbwTefuoANr8MoV87x9pZLoXsG+9YxN79XfD5hEURpeAdP/73pTed0f6R7DhN5+gYhOEtI45DzrDB1TWSsRpsckrrGXIM1CVU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737903205; c=relaxed/simple; bh=A80N/vwzgNu2zPt3sRpDXRCaasm06f5duZKz0cFftVk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=LrE6LE5r/QkcfKpZqpAtlLL7ztSKaswl4xDg0psu8NV93f9lxuD09hdBe2SBKTlw5Ecx7tkpukYNNJxX7huf4mHAp7qbV3NMm27ubZURa9tTM5oGPr/QwojOIegyiGerfprZIeUBl4tnw4V3HqopZHj5V0n/qz3jkjFCaFELXQY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RuJGr07t; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RuJGr07t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FDD4C4CED3; Sun, 26 Jan 2025 14:53:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737903204; bh=A80N/vwzgNu2zPt3sRpDXRCaasm06f5duZKz0cFftVk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RuJGr07tzOzgKOwCvPrGaCbT69+G4XTzsUjd7H+mKtI5LGyAeB6TVSAx6YLSQ5PBZ 719AXowcJ3S1dLruN9wEx71j0e21HxZLnJjLzUAD0Qfs/3nro9bR5/QDrOKO8UCS33 S7PQ9M49H3Ynob8CEjDwdl3m4zy9MJwuiBOCQk1ntaT+acJruf/H3TtXrxt33XM3r4 FKLS6PMrB24gm4NE4f6F04DePwD2tot6WZzZzq21ruLTOp6A1kTE1imHP2PT5DCmev OlhGIlSGzKHNeWIyCCTfbOkdKxhjf1uqB086yyAxJtR6M0+/FDVPoXvAoEa0vSY9yN yYVJCuJaqUngw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , "Dustin L . Howett" , Mario Limonciello , Harry Wentland , Sasha Levin , maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.13 04/34] drm: panel-backlight-quirks: Add Framework 13 matte panel Date: Sun, 26 Jan 2025 09:52:40 -0500 Message-Id: <20250126145310.926311-4-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250126145310.926311-1-sashal@kernel.org> References: <20250126145310.926311-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.13 Content-Transfer-Encoding: 8bit From: Thomas Weißschuh [ Upstream commit 916ecc0db336768d80e14ef28a8c64a775274f95 ] 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: Thomas Weißschuh Tested-by: Dustin L. Howett Reviewed-by: Mario Limonciello Reviewed-by: Harry Wentland Signed-off-by: Mario Limonciello Link: https://patchwork.freedesktop.org/patch/msgid/20241111-amdgpu-min-backlight-quirk-v7-3-f662851fda69@weissschuh.net Signed-off-by: Sasha Levin --- 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 6b8bbed77c7f1..f2aefff618ddb 100644 --- a/drivers/gpu/drm/drm_panel_backlight_quirks.c +++ b/drivers/gpu/drm/drm_panel_backlight_quirks.c @@ -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, -- 2.39.5