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 9220BCD4F25 for ; Fri, 15 May 2026 15:42:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 422BB10F56A; Fri, 15 May 2026 15:42:02 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="N+tH76Cl"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id CDCAA10F56A for ; Fri, 15 May 2026 15:40:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1778859633; x=1810395633; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aqtNHfXvcvcIbGtlXnR+VvZjNOMDp4oLGBrv3MjDr8M=; b=N+tH76ClltXi7dAYetDHBfEHrhR1aO7kW1fZxoTco3XR62VQNjU9Kdkk AAf8iVE4J7gAscH0V3Lz3DSKrq1Gm/wd5I/nHCsXjKmMpdK05otq2dhIz tQTOCzG/BQTLmRRchQ8+wGE0Phn3xLFjmsGHlDI5PngsTSXYnepok4Art dH+SSkUrddVtqviIHxDs+UjuVzZ2rKo1Gdj2rwnmC7Rl+9mXJarBsSj4J KfOvivV1bdg1HYe5J6ELeP3onA3zNxIpRt6EsPHZiKgpuhuewZ2WRZKpl cg85kWOUTo7JlnXlWp2Hofn/eb4MbUMuegGRXFDoyeDvVEkwV3VPmoLaP g==; X-CSE-ConnectionGUID: Is288xGDSHuEon8tuWAdew== X-CSE-MsgGUID: PiHOp7xHSliW5DuJ2klqZA== X-IronPort-AV: E=McAfee;i="6800,10657,11787"; a="79936319" X-IronPort-AV: E=Sophos;i="6.23,236,1770624000"; d="scan'208";a="79936319" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 May 2026 08:40:32 -0700 X-CSE-ConnectionGUID: At14ULjORa+znSABFz3ahA== X-CSE-MsgGUID: uzvzTAA9SvaYPZ0X+VMxTQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,236,1770624000"; d="scan'208";a="242720031" Received: from jeevan-x299-aorus-gaming-3-pro.iind.intel.com ([10.227.90.91]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 May 2026 08:40:31 -0700 From: Jeevan B To: igt-dev@lists.freedesktop.org Cc: animesh.manna@intel.com, dibin.moolakadan.subrahmanian@intel.com, mohammed.thasleem@intel.com, ramanaidu.naladala@intel.com, Jeevan B Subject: [PATCH i-g-t v6 7/7] tests/intel/kms_pm_dc: Add dc3co-vpb-framegap subtest Date: Fri, 15 May 2026 21:08:37 +0530 Message-ID: <20260515153838.841048-8-jeevan.b@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260515153838.841048-1-jeevan.b@intel.com> References: <20260515153838.841048-1-jeevan.b@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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" Add a new subtest to validate DC3CO counter increments across frame gaps exceeding the threshold during a video-like workload with PSR2 enabled. Signed-off-by: Jeevan B --- tests/intel/kms_pm_dc.c | 73 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/tests/intel/kms_pm_dc.c b/tests/intel/kms_pm_dc.c index 0f216d9eb..4ce7c94be 100644 --- a/tests/intel/kms_pm_dc.c +++ b/tests/intel/kms_pm_dc.c @@ -60,6 +60,10 @@ * exit cycle, ensuring DC3CO is not broken by deeper power state * transitions. * + * SUBTEST: dc3co-vpb-framegap + * Description: Validate DC3CO counter increments before and after a delay greater + * than 6 frame gaps during video-like load with PSR2 active. + * * SUBTEST: dc5-dpms * Description: Validate display engine entry to DC5 state while all connectors's * DPMS property set to OFF @@ -432,6 +436,64 @@ static void test_dc3co_framedrop(data_t *data) cleanup_dc3co_fbs(data); } +static void check_dc3co_with_framegap_load(data_t *data) +{ + igt_plane_t *primary; + uint32_t dc3co_cnt_before, dc3co_cnt_after_gap; + int delay, long_gap_us; + time_t secs = 3; + time_t start_time; + + primary = igt_output_get_plane_type(data->output, DRM_PLANE_TYPE_PRIMARY); + igt_plane_set_fb(primary, NULL); + + delay = 1.5 * ((1000 * 1000) / data->mode->vrefresh); + + dc3co_cnt_before = igt_read_dc_counter(data->debugfs_fd, + IGT_INTEL_CHECK_DC3CO); + start_time = time(NULL); + while (time(NULL) - start_time < secs) { + igt_plane_set_fb(primary, &data->fb_rgb); + igt_display_commit(&data->display); + usleep(delay); + + igt_plane_set_fb(primary, &data->fb_rgr); + igt_display_commit(&data->display); + usleep(delay); + } + + assert_dc_counter(data, IGT_INTEL_CHECK_DC3CO, dc3co_cnt_before); + + long_gap_us = 7 * ((1000 * 1000) / data->mode->vrefresh); + usleep(long_gap_us); + + dc3co_cnt_after_gap = igt_read_dc_counter(data->debugfs_fd, + IGT_INTEL_CHECK_DC3CO); + start_time = time(NULL); + while (time(NULL) - start_time < secs) { + igt_plane_set_fb(primary, &data->fb_rgb); + igt_display_commit(&data->display); + usleep(delay); + + igt_plane_set_fb(primary, &data->fb_rgr); + igt_display_commit(&data->display); + usleep(delay); + } + + assert_dc_counter(data, IGT_INTEL_CHECK_DC3CO, dc3co_cnt_after_gap); +} + +static void test_dc3co_vpb_framegap(data_t *data) +{ + igt_require_dc_counter(data->debugfs_fd, IGT_INTEL_CHECK_DC3CO); + data->op_psr_mode = PSR_MODE_2; + setup_output(data); + setup_dc3co(data); + setup_videoplayback(data); + check_dc3co_with_framegap_load(data); + cleanup_dc3co_fbs(data); +} + static void test_dc5_retention_flops(data_t *data, int dc_flag) { uint32_t dc_counter_before_psr; @@ -852,6 +914,17 @@ int igt_main() } } + igt_describe("Validate DC3CO counter increments before and after a delay " + "greater than 6 frame gaps during video-like load with PSR2 active"); + igt_subtest("dc3co-vpb-framegap") { + igt_require(psr_sink_support(data.drm_fd, data.debugfs_fd, + PSR_MODE_2, NULL)); + igt_require_f(IS_TIGERLAKE(data.devid) || + intel_display_ver(data.devid) >= 35, + "Platform does not support DC3CO with PSR2\n"); + test_dc3co_vpb_framegap(&data); + } + igt_describe("This test validates display engine entry to DC5 state " "while PSR is active"); igt_subtest("dc5-psr") { -- 2.43.0