From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C87C1E9380B for ; Mon, 13 Apr 2026 01:42:00 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 57E5610E2D7; Mon, 13 Apr 2026 01:42:00 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=mediatek.com header.i=@mediatek.com header.b="brYW0DKv"; dkim-atps=neutral Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3939310E2D7 for ; Mon, 13 Apr 2026 01:41:49 +0000 (UTC) X-UUID: ed88b15236d911f1ae70033691e9ac7d-20260413 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=fCy8jP1UE4kN5m4GQOz4BulwODrvZlIAdxCj3z3dvWc=; b=brYW0DKvKlOtqCN5325GzZsyfpn6v+ZuSkE0KeJ+hL1T/1qJfpHvNKXYeBxkPUdwPo+K3naEjg5Qpj6ZyVUi2MHhojQGB5ey7wWMhjU3y4SkjO+6S4TwrNnp3hMg2qv33SsEFUjViDLnk3AwstYQFFirK9+G+16soHh6QJjiMeg=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12, REQID:1f417c6b-623c-4929-85f6-42f03bf5c9dd, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:e7bac3a, CLOUDID:687bda94-f8ef-4ca8-bea0-143568f9ca1d, B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102|836|865|888|898,TC:-5,Content:0| 15|50,EDM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:-1,COL:0,OSI:0 ,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: ed88b15236d911f1ae70033691e9ac7d-20260413 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1733732818; Mon, 13 Apr 2026 09:41:44 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.29; Mon, 13 Apr 2026 09:41:44 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Mon, 13 Apr 2026 09:41:43 +0800 From: Jay Liu To: CC: Jason-JH Lin , Paul-PL Chen , Nancy Lin , Singo Chang , Gil Dekel , Yacoub , Sharma Swati2 , , Jay Liu Subject: [PATCH i-g-t v2 1/1] tests/kms_color: Add 10-bit color depth support to gamma test for MediaTek Date: Mon, 13 Apr 2026 09:41:35 +0800 Message-ID: <20260413014140.29824-1-jay.liu@mediatek.com> X-Mailer: git-send-email 2.46.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" 1. Add 10-bit color depth flow to gamma test for MediaTek devices, which only support bit-true results with 10-bit data. The test now selects 8-bit or 10-bit color depth and framebuffer format based on device type. 2. To satisfy the legacy gamma test requirements, the MTK Gamma LUT limit should be set to 4092, in the current 16-bit LUT design, setting the entry to 0xffd0 ensures the driver maps it correctly to 4092. Signed-off-by: Jay Liu --- tests/kms_color.c | 35 +++++++++++++++++++++++++++-------- 1 file changed, 27 insertions(+), 8 deletions(-) diff --git a/tests/kms_color.c b/tests/kms_color.c index 565edb2dc..033207368 100644 --- a/tests/kms_color.c +++ b/tests/kms_color.c @@ -288,7 +288,7 @@ static bool test_pipe_legacy_gamma(data_t *data, fb_id = igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, - DRM_FORMAT_XRGB8888, + data->drm_format, DRM_FORMAT_MOD_LINEAR, &fb); igt_assert(fb_id); @@ -296,7 +296,7 @@ static bool test_pipe_legacy_gamma(data_t *data, fb_modeset_id = igt_create_fb(data->drm_fd, mode->hdisplay, mode->vdisplay, - DRM_FORMAT_XRGB8888, + data->drm_format, DRM_FORMAT_MOD_LINEAR, &fb_modeset); igt_assert(fb_modeset_id); @@ -322,9 +322,20 @@ static bool test_pipe_legacy_gamma(data_t *data, igt_plane_set_fb(primary, &fb); red_lut[0] = green_lut[0] = blue_lut[0] = 0; - for (i = 1; i < legacy_lut_size; i++) - red_lut[i] = green_lut[i] = blue_lut[i] = 0xffff; - igt_assert_eq(drmModeCrtcSetGamma(data->drm_fd, primary->crtc->crtc_id, + for (i = 1; i < legacy_lut_size; i++) { + /* + * The Medaitek Gamma LUT maps 10bit input data to 12bit output. + * In this test case, the maximum input value is 1023. + * When the Gamma function is disabled, the data defaults to a 4092 output. + * To achieve bit true results, the Gamma LUT maximum must be set to 4092. + * Note that 0xFFFD0 represents 16-bit,which maps to 4092 in 12-bit depth. + */ + if (is_mtk_device(data->drm_fd)) + red_lut[i] = green_lut[i] = blue_lut[i] = 0xffd0; + else + red_lut[i] = green_lut[i] = blue_lut[i] = 0xffff; + } + igt_assert_eq(drmModeCrtcSetGamma(data->drm_fd, primary->pipe->crtc_id, legacy_lut_size, red_lut, green_lut, blue_lut), 0); igt_display_commit(&data->display); igt_wait_for_vblank(primary->crtc); @@ -752,14 +763,22 @@ static void run_gamma_degamma_tests_for_crtc(data_t *data, igt_crtc_t *crtc, bool (*test_t)(data_t*, igt_plane_t*)) { + bool is_mtk = false; + test_setup(data, crtc); + /* MediaTek requires 10-bit pipeline for accurate (bit true) color processing */ + if (is_mtk_device(data->drm_fd)) + is_mtk = true; + /* - * We assume an 8bits depth per color for degamma/gamma LUTs + * We assume an 8bits or 10bits depth per color for degamma/gamma LUTs * for CRC checks with framebuffer references. */ - data->color_depth = 8; - data->drm_format = DRM_FORMAT_XRGB8888; + + /* MediaTek requires 10-bit pipeline for accurate (bit true) color processing */ + data->color_depth = is_mtk ? 10 : 8; + data->drm_format = is_mtk ? DRM_FORMAT_XRGB2101010 : DRM_FORMAT_XRGB8888; data->mode = igt_output_get_mode(data->output); igt_require(crtc_output_combo_valid(data, crtc)); -- 2.46.0