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 99C2F192594; Tue, 8 Oct 2024 12:36:17 +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=1728390977; cv=none; b=phz30ttuPptpFlAx7I5SgXjOGJ2DEP3LuXEcdLhHEYGiNBs7mnZ/5mgPhaMNfQTeFP6yHM0EA+/xFPo2hUZrBwowhWBRn4oQ9kd9THtFKtfWskA+lOrTpzXnE/yMZn8Y6cZs8VyDV5Tmx2kMiGAycMw0zyFPZrLmwaS/0QpaN/s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728390977; c=relaxed/simple; bh=EfKKo307UtEOv/T+MKGne6fEe7GrIHKMLeC/nn6G07Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=cGvWGyJy5X2AQENtBu29HzS/vHGBJ7nMMKDWx30nSJBmrT+iza6kZ21rCkcaDqhld0rxByANM4tqRdt4dSlnbctBxF0xThqXR1OrxjLmzgEU/v6BgLrYMKPZ9VthzRp5N9NvTETRMl7ozumVA+jci6PW5nhMjPqlQMx6URbSLbI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=gGl5+rJl; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="gGl5+rJl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2070BC4CEC7; Tue, 8 Oct 2024 12:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728390977; bh=EfKKo307UtEOv/T+MKGne6fEe7GrIHKMLeC/nn6G07Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gGl5+rJllojLU3eoFjGHyxhIVr738jNfPE8F4IsULva1dzp6hXSWDQ9iTVhm5Jre+ 6VAmFM1dTtkZicXmljgJgdeDnccW3dECbj4CurSXfimhfNTVzwLlTkc5u7i7SBb6s+ eufQAETfaqVjtjk6uCeZNJ2wngPkSTYiXf9Sr/Jk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Harry Wentland , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Mario Limonciello , Alex Deucher , Sasha Levin Subject: [PATCH 6.10 452/482] drm/amd/display: Allow backlight to go below `AMDGPU_DM_DEFAULT_MIN_BACKLIGHT` Date: Tue, 8 Oct 2024 14:08:35 +0200 Message-ID: <20241008115706.305897026@linuxfoundation.org> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241008115648.280954295@linuxfoundation.org> References: <20241008115648.280954295@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mario Limonciello [ Upstream commit 87d749a6aab73d8069d0345afaa98297816cb220 ] The issue with panel power savings compatibility below `AMDGPU_DM_DEFAULT_MIN_BACKLIGHT` happens at `AMDGPU_DM_DEFAULT_MIN_BACKLIGHT` as well. That issue will be fixed separately, so don't prevent the backlight brightness from going that low. Cc: Harry Wentland Cc: Thomas Weißschuh Link: https://lore.kernel.org/amd-gfx/be04226a-a9e3-4a45-a83b-6d263c6557d8@t-8ch.de/T/#m400dee4e2fc61fe9470334d20a7c8c89c9aef44f Reviewed-by: Harry Wentland Signed-off-by: Mario Limonciello Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 d2554b4a14fe9..83f4ff9e848d7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -4176,7 +4176,7 @@ static void amdgpu_dm_update_backlight_caps(struct amdgpu_display_manager *dm, int spread = caps.max_input_signal - caps.min_input_signal; if (caps.max_input_signal > AMDGPU_DM_DEFAULT_MAX_BACKLIGHT || - caps.min_input_signal < AMDGPU_DM_DEFAULT_MIN_BACKLIGHT || + caps.min_input_signal < 0 || spread > AMDGPU_DM_DEFAULT_MAX_BACKLIGHT || spread < AMDGPU_DM_MIN_SPREAD) { DRM_DEBUG_KMS("DM: Invalid backlight caps: min=%d, max=%d\n", -- 2.43.0