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Tue, 12 Nov 2019 11:10:18 +0000 From: "james qian wang (Arm Technology China)" To: Liviu Dudau , "airlied@linux.ie" , Brian Starkey , "maarten.lankhorst@linux.intel.com" , "sean@poorly.run" , Mihail Atanassov , "imirkin@alum.mit.edu" CC: "Jonathan Chai (Arm Technology China)" , "Julien Yin (Arm Technology China)" , "Thomas Sun (Arm Technology China)" , "Lowry Li (Arm Technology China)" , Ayan Halder , "Tiannan Zhu (Arm Technology China)" , "Yiqi Kang (Arm Technology China)" , nd , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , Ben Davis , "Oscar Zhang (Arm Technology China)" , "Channing Chen (Arm Technology China)" , "james qian wang (Arm Technology China)" Subject: [PATCH v10 3/4] drm/komeda: Add drm_ctm_to_coeffs() Thread-Topic: [PATCH v10 3/4] drm/komeda: Add drm_ctm_to_coeffs() Thread-Index: AQHVmUnEN7Mkw/Fd7UqlRzpEzWbLAw== Date: Tue, 12 Nov 2019 11:10:18 +0000 Message-ID: <20191112110927.20931-4-james.qian.wang@arm.com> References: <20191112110927.20931-1-james.qian.wang@arm.com> In-Reply-To: <20191112110927.20931-1-james.qian.wang@arm.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [113.29.88.7] x-clientproxiedby: HK0PR03CA0106.apcprd03.prod.outlook.com (2603:1096:203:b0::22) To AM0PR08MB4995.eurprd08.prod.outlook.com (2603:10a6:208:162::15) Authentication-Results-Original: spf=none (sender IP is ) smtp.mailfrom=james.qian.wang@arm.com; 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X-MS-Office365-Filtering-Correlation-Id-Prvs: 305e0879-1316-4f33-2c7b-08d76760e6c4 NoDisclaimer: True X-Forefront-PRVS: 021975AE46 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: G5SPyki5PuLcm1yeKGUL0zCGe4hJ3182rp+KbMn0a2o4hqVGHGkteeqaF1jgHWLdUZw0fWc3hSEr2B6AeMlXa2qn7yCS6keojJlu4ys5u6H3jKGk3hs/hsnr/p43GgLlWS3Z7GKyWGjkOz6qnl6MR5czql4NpUdCQv3PGeLZjtZ9yFjPwa3deY3bSuM+AWkIYlNu7FbKVD4BQLy8dEsHo9+bGlS7ocbrMTNP1igLHwOMeaGej8CAICdesa2nP7vqv5OE84/xfhPESpHS8p2id5aQqrPz1TyRJ8VMsrNc+6iIxBjmcpdwhEDtd9s1LX1oh7BB3T47cPGPQ/GSPbVL29AWGvmta1EdY5yEuwqZJjR8oTgCEaLmZ7oze/z8yqgayHl+7aHPnnQpgviWKgbbatc9tjt1AGtaiIph8MVkMHXCT6VkHpCvESCCUghVjUHQ X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Nov 2019 11:10:27.8678 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8fc54229-fff9-4fa7-b271-08d76760ec8a X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM6PR08MB3478 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This function is for converting drm_color_ctm matrix to komeda hardware required required Q2.12 2's complement CSC matrix. v2: Move the fixpoint conversion function s31_32_to_q2_12() to drm core as a shared helper. Signed-off-by: james qian wang (Arm Technology China) Reviewed-by: Mihail Atanassov --- .../gpu/drm/arm/display/komeda/komeda_color_mgmt.c | 14 ++++++++++++++ .../gpu/drm/arm/display/komeda/komeda_color_mgmt.h | 1 + 2 files changed, 15 insertions(+) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.c b/drive= rs/gpu/drm/arm/display/komeda/komeda_color_mgmt.c index c180ce70c26c..d8e449e6ebda 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.c @@ -117,3 +117,17 @@ void drm_lut_to_fgamma_coeffs(struct drm_property_blob= *lut_blob, u32 *coeffs) { drm_lut_to_coeffs(lut_blob, coeffs, sector_tbl, ARRAY_SIZE(sector_tbl)); } + +void drm_ctm_to_coeffs(struct drm_property_blob *ctm_blob, u32 *coeffs) +{ + struct drm_color_ctm *ctm; + u32 i; + + if (!ctm_blob) + return; + + ctm =3D ctm_blob->data; + + for (i =3D 0; i < KOMEDA_N_CTM_COEFFS; i++) + coeffs[i] =3D drm_color_ctm_s31_32_to_qm_n(ctm->matrix[i], 3, 12); +} diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.h b/drive= rs/gpu/drm/arm/display/komeda/komeda_color_mgmt.h index 08ab69281648..2f4668466112 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.h +++ b/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.h @@ -18,6 +18,7 @@ #define KOMEDA_N_CTM_COEFFS 9 =20 void drm_lut_to_fgamma_coeffs(struct drm_property_blob *lut_blob, u32 *coe= ffs); +void drm_ctm_to_coeffs(struct drm_property_blob *ctm_blob, u32 *coeffs); =20 const s32 *komeda_select_yuv2rgb_coeffs(u32 color_encoding, u32 color_rang= e); =20 --=20 2.20.1