From patchwork Mon Jun 22 14:25:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Modem, Bhanuprakash" X-Patchwork-Id: 11616979 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 724EB13B1 for ; Mon, 22 Jun 2020 06:29:33 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 5B0732491E for ; Mon, 22 Jun 2020 06:29:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B0732491E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 610AE6E11F; Mon, 22 Jun 2020 06:29:25 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 40C626E0DA; Mon, 22 Jun 2020 06:29:20 +0000 (UTC) IronPort-SDR: QGqM+PxDqZFHtqiLU0vj5lG2neZ60TIJCR0AvFc9/h++qXsJoz7Ec23hwHhLrq2qtv1KL8bNQP 9fUiEtS+4bOA== X-IronPort-AV: E=McAfee;i="6000,8403,9659"; a="205153040" X-IronPort-AV: E=Sophos;i="5.75,266,1589266800"; d="scan'208";a="205153040" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jun 2020 23:29:20 -0700 IronPort-SDR: g77WJpEOgCrN4s6VYHp+s+mfOzn3duKRBUhq8phVNJrYuFe18RIR+RkOdR+4/WOAMYiKhK++1C l0UqLoGxqoJg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,266,1589266800"; d="scan'208";a="300735621" Received: from bhanu-nuc8i7beh.iind.intel.com ([10.145.162.210]) by fmsmga004.fm.intel.com with ESMTP; 21 Jun 2020 23:29:18 -0700 From: Bhanuprakash Modem To: bhanuprakash.modem@intel.com, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Date: Mon, 22 Jun 2020 19:55:18 +0530 Message-Id: <20200622142519.16214-3-bhanuprakash.modem@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200622142519.16214-1-bhanuprakash.modem@intel.com> References: <20200622142519.16214-1-bhanuprakash.modem@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [v9 2/3] drm/debug: Expose connector VRR monitor range via debugfs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" [Why] It's useful to know the min and max vrr range for IGT testing. [How] Expose the min and max vfreq for the connector via a debugfs file on the connector, "vrr_range". Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range v2: * Fix the typo in max_vfreq (Manasi) * Change the name of node to i915_vrr_info so we can add other vrr info for more debug info (Manasi) * Change the VRR capable to display Yes or No (Manasi) * Fix indentation checkpatch errors (Manasi) v3: * Remove the unnecessary debug print (Manasi) v4: * Rebase v5: * Rename to vrr_range to match AMD debugfs v6: * Rebase (manasi) v7: * Fix cmpilation due to rebase v8: * Move debugfs node creation logic to DRM (Emil) * Remove AMD specific logic (Emil) v9: * Seperate patch for removal of AMD specific logic (Manasi) Signed-off-by: Bhanuprakash Modem Signed-off-by: Manasi Navare Cc: Jani Nikula Cc: Ville Syrjälä Cc: Harry Wentland CC: Emil Velikov Reviewed-by: Manasi Navare --- drivers/gpu/drm/drm_debugfs.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index bfe4602f206b..3d7182001004 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -376,6 +376,24 @@ static ssize_t edid_write(struct file *file, const char __user *ubuf, return (ret) ? ret : len; } +/* + * Returns the min and max vrr vfreq through the connector's debugfs file. + * Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range + */ +static int vrr_range_show(struct seq_file *m, void *data) +{ + struct drm_connector *connector = m->private; + + if (connector->status != connector_status_connected) + return -ENODEV; + + seq_printf(m, "Min: %u\n", (u8)connector->display_info.monitor_range.min_vfreq); + seq_printf(m, "Max: %u\n", (u8)connector->display_info.monitor_range.max_vfreq); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(vrr_range); + static const struct file_operations drm_edid_fops = { .owner = THIS_MODULE, .open = edid_open, @@ -413,6 +431,10 @@ void drm_debugfs_connector_add(struct drm_connector *connector) /* edid */ debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root, connector, &drm_edid_fops); + + /* vrr range */ + debugfs_create_file("vrr_range", S_IRUGO, root, connector, + &vrr_range_fops); } void drm_debugfs_connector_remove(struct drm_connector *connector)