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 3A4D9C02199 for ; Mon, 3 Feb 2025 07:57:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C8E6C10E3F5; Mon, 3 Feb 2025 07:57:13 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="MMgP4wgr"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) by gabe.freedesktop.org (Postfix) with ESMTPS id 44BA710E3F5 for ; Mon, 3 Feb 2025 07:57:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1738569432; x=1770105432; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=lLz7bYWqyjYrePZedDCPUcmZ7w/o3gJZVzN2pDFnh8c=; b=MMgP4wgra8tFypVnuEeHscXY40zF459bcCLk3Dkc5FO9C6O/LKLP9p9n TQX1RZMk+twY8+o4efXg/xcjrQW/QhVLDUeTOgwG4SL+f7tCAQPLm+MmB Z8WyoIqpvBcVlz/FMhNx2gD+PGebbjmRSkrDm5VkdBRQqFZ+hsLzmVAQ1 cM1UwCQfMXW9VYtxQ9wKNnvRcbtyZn8ZXKQqoeEQ/ehcV94xfC99pdtlM 3/h7H5HUC7zhE0WX/fbLRxjY78stVzgwAJjiXxMpHhhjfUoPnnUz1hTCs haZ2Azl3FasFuD5rlGtgCN/e6GSPmCH4igmlxApVtnEu8e1+UPLxuCyCT g==; X-CSE-ConnectionGUID: d7yr4+7YRB6L1xUHxMEkTQ== X-CSE-MsgGUID: G/GGjI4OT5i88mUuPS73IQ== X-IronPort-AV: E=McAfee;i="6700,10204,11334"; a="49652716" X-IronPort-AV: E=Sophos;i="6.13,255,1732608000"; d="scan'208";a="49652716" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Feb 2025 23:57:12 -0800 X-CSE-ConnectionGUID: NCOXVDiFQfSnDGKt7/G9Mg== X-CSE-MsgGUID: q5zn28+rTTOrsfwzyK0j/g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,255,1732608000"; d="scan'208";a="110786380" Received: from kunal-x299-aorus-gaming-3-pro.iind.intel.com ([10.190.239.13]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Feb 2025 23:57:11 -0800 From: Kunal Joshi To: igt-dev@lists.freedesktop.org Cc: Kunal Joshi Subject: [PATCH i-g-t 3/5] lib/igt_kms: add function to set link params Date: Mon, 3 Feb 2025 13:42:39 +0530 Message-Id: <20250203081241.659139-4-kunal1.joshi@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250203081241.659139-1-kunal1.joshi@intel.com> References: <20250203081241.659139-1-kunal1.joshi@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 function to force link rate and lane count for given output, install exit handle to set auto at exit Signed-off-by: Kunal Joshi --- lib/igt_kms.c | 33 +++++++++++++++++++++++++++++++++ lib/igt_kms.h | 2 ++ 2 files changed, 35 insertions(+) diff --git a/lib/igt_kms.c b/lib/igt_kms.c index 90f44b4d3..424056252 100644 --- a/lib/igt_kms.c +++ b/lib/igt_kms.c @@ -7190,6 +7190,39 @@ void igt_reset_link_params(int drm_fd, igt_output_t *output) drmModeFreeConnector(temp); } +/** + * igt_set_link_params: + * @drm_fd: A drm file descriptor + * @output: Target output + * + * set link rate and lane count to given value, also installs exit handler + * to set link rate and lane count to auto on exit + */ +void igt_set_link_params(int drm_fd, igt_output_t *output, + char *link_rate, char *lane_count) +{ + bool valid; + drmModeConnector *temp; + + valid = true; + valid = valid && connector_attr_set_debugfs(drm_fd, output->config.connector, + "i915_dp_force_link_rate", + link_rate, "auto", true); + valid = valid && connector_attr_set_debugfs(drm_fd, output->config.connector, + "i915_dp_force_lane_count", + lane_count, "auto", true); + igt_assert_f(valid, "Unable to set attr or install exit handler\n"); + dump_connector_attrs(); + igt_install_exit_handler(reset_connectors_at_exit); + + /* + * To allow callers to always use GetConnectorCurrent we need to force a + * redetection here. + */ + temp = drmModeGetConnector(drm_fd, output->config.connector->connector_id); + drmModeFreeConnector(temp); +} + /** * igt_backlight_read: * @result: Pointer to store the result diff --git a/lib/igt_kms.h b/lib/igt_kms.h index 8810123fb..f696847a4 100644 --- a/lib/igt_kms.h +++ b/lib/igt_kms.h @@ -1268,6 +1268,8 @@ bool igt_has_force_link_training_failure_debugfs(int drmfd, igt_output_t *output int igt_get_dp_pending_lt_failures(int drm_fd, igt_output_t *output); int igt_get_dp_pending_retrain(int drm_fd, igt_output_t *output); void igt_reset_link_params(int drm_fd, igt_output_t *output); +void igt_set_link_params(int drm_fd, igt_output_t *output, + char *link_rate, char *lane_count); int igt_backlight_read(int *result, const char *fname, igt_backlight_context_t *context); int igt_backlight_write(int value, const char *fname, igt_backlight_context_t *context); -- 2.25.1