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David Alan Gilbert'" , Bhawanpreet Lakha , Aurabindo Pillai , Matthew Schwartz , pekka.paalanen@collabora.com, robert.mader@posteo.de, amd-gfx@lists.freedesktop.org, kernel-dev@igalia.com, linux-kernel@vger.kernel.org, "Wheeler, Daniel" References: <20260820093324.10201-1-mwen@igalia.com> Content-Language: en-US From: Alex Hung In-Reply-To: <20260820093324.10201-1-mwen@igalia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR04CA0254.namprd04.prod.outlook.com (2603:10b6:303:88::19) To DM4PR12MB8476.namprd12.prod.outlook.com (2603:10b6:8:17e::15) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM4PR12MB8476:EE_|DM3PR12MB9391:EE_ X-MS-Office365-Filtering-Correlation-Id: 2ac840c6-acbd-44ea-d416-08df05446056 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|23010399003|376014|7416014|10067099003|18002099003|22082099003|56012099006|11063799006; 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This series is Reviewed-by: Alex Hung On 8/20/26 03:26, Melissa Wen wrote: > Extend halving distribution to all curves/custom-LUT in a > encode-to-linear operation, not just PQ/SRGB. This fixes IGT kms_colorop > test failures after [1]. Also use the CM3 degamma helper which > translates curves into hw points for DCN30, DCN301, DCN31, and DCN314 > not just DCN32+, as the banding issue is present all of them. > > [1] https://lore.kernel.org/amd-gfx/20260623160112.1636801-1-mwen@igalia.com/ > > v1: https://lore.kernel.org/amd-gfx/20260819161106.27702-1-mwen@igalia.com/ > Changes: > - Clearly state which DCN versions are affected and the reference commit > (Alex H.) > > Melissa > > > Melissa Wen (2): > drm/amd/display: use halving distribution for all encode-to-linear > curves > drm/amd/display: use translate_curve_to_degamma_hw_format on DCN30 > > .../amd/display/dc/dcn30/dcn30_cm_common.c | 34 ++++++------------- > .../amd/display/dc/hwss/dcn30/dcn30_hwseq.c | 10 +++--- > 2 files changed, 14 insertions(+), 30 deletions(-) >