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 1242DCD37B6 for ; Wed, 13 May 2026 06:19:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 92E1210E2E8; Wed, 13 May 2026 06:19:59 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="K0m5nUy0"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5A4E210EC91 for ; Wed, 13 May 2026 06:18:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1778653085; x=1810189085; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=BNZBpIABNoDFJaGMrRlXwGsv9wzlGCu/KyyZCA7yH4o=; b=K0m5nUy0L4TzmM7TeJNrcRruyvWXQkN2ZpO3KpZDG0Z6qDPrfOyrSyp3 dYkabQhxoUbx7SLYZpwsd/6mBaWxtrxCVMTOfQJTaGZES0Psq811GTbZY aGH8wirTF2eAzYPv/oZOZPxK///tC0JocjzlOHQuE2wREcwnYNqtLcCX4 /DlnEbBxiduf7JcMHt/XoJifGzMiztfj2v66tvR1UcZmcOlCSnZ0LC9My hp9bs8f6SBTlbFOkXEuZih+Xmd0SNU9TIqc30mJjnduzhLcqBXo6mGPa5 fdIzpSdxD4VYh90LAQ8u0X/MX0Qi5Lw1BYaga3hWS/zqMjfURAqAw1KDt w==; X-CSE-ConnectionGUID: 9eK0+3METz6nltSEmd6I7g== X-CSE-MsgGUID: jI0sAVtsTjSc0p0lC/3Cyg== X-IronPort-AV: E=McAfee;i="6800,10657,11784"; a="79685181" X-IronPort-AV: E=Sophos;i="6.23,232,1770624000"; d="scan'208";a="79685181" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2026 23:18:05 -0700 X-CSE-ConnectionGUID: 7Zrq+nrJSjiAzkwXFJ+j0g== X-CSE-MsgGUID: Tk/5l7bjRgGt32vYNEx+YQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,232,1770624000"; d="scan'208";a="235320997" Received: from jeevan-x299-aorus-gaming-3-pro.iind.intel.com ([10.227.90.91]) by fmviesa008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 May 2026 23:18:03 -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 v5 7/7] tests/intel/kms_pm_dc: Add dc3co-vpb-framegap subtest Date: Wed, 13 May 2026 11:46:05 +0530 Message-ID: <20260513061605.645695-8-jeevan.b@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260513061605.645695-1-jeevan.b@intel.com> References: <20260513061605.645695-1-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 397f13d02..cc48ebf3f 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; @@ -862,6 +924,17 @@ 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