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b=3W3p90qoKwkf1Rvrs/0rh6gzFw7Q5FdLZCTBkJ7TmKX/g8vpSuprSlMsew575jAqinG6aCp8UYKzu1skz6mVbfQTnL70s9pTnPw/buTRSJLZsAc81nmVYxO6ruKN9pKsVUfAdEq8usJcUqiYoOVg5t0ZdTeCT41BGdRn5VcbHZs= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from MN0PR12MB6101.namprd12.prod.outlook.com (2603:10b6:208:3cb::10) by DS0PR12MB8528.namprd12.prod.outlook.com (2603:10b6:8:160::6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8158.27; Thu, 21 Nov 2024 15:54:02 +0000 Received: from MN0PR12MB6101.namprd12.prod.outlook.com ([fe80::37ee:a763:6d04:81ca]) by MN0PR12MB6101.namprd12.prod.outlook.com ([fe80::37ee:a763:6d04:81ca%4]) with mapi id 15.20.8158.019; Thu, 21 Nov 2024 15:54:02 +0000 Message-ID: <78ad9dfc-386f-4aa7-a025-a2ba87936068@amd.com> Date: Thu, 21 Nov 2024 09:53:59 -0600 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 0/4] drm: Minimum backlight overrides and implementation for amdgpu To: =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Alex Deucher , =?UTF-8?Q?Christian_K=C3=B6nig?= , David Airlie , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Harry Wentland , Leo Li , Rodrigo Siqueira , Matt Hartley , Kieran Levin , Hans de Goede , Jani Nikula , Xinhui Pan , Jonathan Corbet , Simona Vetter , Simona Vetter Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Dustin Howett , linux-doc@vger.kernel.org References: <20241111-amdgpu-min-backlight-quirk-v7-0-f662851fda69@weissschuh.net> Content-Language: en-US From: Mario Limonciello In-Reply-To: <20241111-amdgpu-min-backlight-quirk-v7-0-f662851fda69@weissschuh.net> Content-Type: text/plain; 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This leads to a fairly bright minimum display backlight. > > Introduce a quirk to override "min_input_signal" to "0" which leads to a > much lower minimum brightness, which is still readable even in daylight. > > One solution would be a fixed firmware version, which was announced but > has no timeline. Hi Thomas, Thanks for this resubmission and the rebase. Apologies for the delay, but this is now picked up to drm-misc-next. https://cgit.freedesktop.org/drm/drm-misc/commit/?id=22e5c7ae12145af13785e3ff138395d5b1a22116 https://cgit.freedesktop.org/drm/drm-misc/commit/?id=c2753b2471c65955de18cbc58530641447e5bfe9 https://cgit.freedesktop.org/drm/drm-misc/commit/?id=916ecc0db336768d80e14ef28a8c64a775274f95 https://cgit.freedesktop.org/drm/drm-misc/commit/?id=d80b5c5b9be6b2e1cdeaaeaa8259523b63cae292 Thanks! > > --- > Changes in v7: > - Rebase on drm-next > - Drop now unnecessary hacky allocation of struct drm_edid > - Link to v6: https://lore.kernel.org/r/20240824-amdgpu-min-backlight-quirk-v6-0-1ed776a17fb3@weissschuh.net > > Changes in v6: > - Clean up cover letter and commit messages > - Add my S-o-b to patch from Dustin > - Mention testing in combination with "panel_power_savings" > - Link to v5: https://lore.kernel.org/r/20240818-amdgpu-min-backlight-quirk-v5-0-b6c0ead0c73d@weissschuh.net > > Changes in v5: > - Forward-declare struct drm_edid > - Reorder patches, quirk entries are last > - Add patch from Dustin for additional quirk entries > - Link to v4: https://lore.kernel.org/r/20240812-amdgpu-min-backlight-quirk-v4-0-56a63ff897b7@weissschuh.net > > Changes in v4: > - Switch back to v2 implementation > - Add MODULE_DESCRIPTION() > - Simplify quirk infrastructure to only handle min backlight quirks. > It can be extended if necessary. > - Expand documentation. > - Link to v3: https://lore.kernel.org/r/20240731-amdgpu-min-backlight-quirk-v3-0-46d40bb21a62@weissschuh.net > > Changes in v3: > - Switch to cmdline override parameter > - Link to v2: https://lore.kernel.org/r/20240623-amdgpu-min-backlight-quirk-v2-0-cecf7f49da9b@weissschuh.net > > Changes in v2: > - Introduce proper drm backlight quirk infrastructure > - Quirk by EDID and DMI instead of only DMI > - Limit quirk to only single Framework 13 matte panel > - Link to v1: https://lore.kernel.org/r/20240610-amdgpu-min-backlight-quirk-v1-1-8459895a5b2a@weissschuh.net > > --- > Dustin L. Howett (1): > drm: panel-backlight-quirks: Add Framework 13 glossy and 2.8k panels > > Thomas Weißschuh (3): > drm: Add panel backlight quirks > drm/amd/display: Add support for minimum backlight quirk > drm: panel-backlight-quirks: Add Framework 13 matte panel > > Documentation/gpu/drm-kms-helpers.rst | 3 + > drivers/gpu/drm/Kconfig | 4 + > drivers/gpu/drm/Makefile | 1 + > drivers/gpu/drm/amd/amdgpu/Kconfig | 1 + > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 ++ > drivers/gpu/drm/drm_panel_backlight_quirks.c | 94 +++++++++++++++++++++++ > include/drm/drm_utils.h | 4 + > 7 files changed, 113 insertions(+) > --- > base-commit: 377dda2cff59825079aee3906aa4904779747b0b > change-id: 20240610-amdgpu-min-backlight-quirk-8402fd8e736a > > Best regards,