From patchwork Mon Jul 20 19:40:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Modem, Bhanuprakash" X-Patchwork-Id: 11673565 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 80CD513B4 for ; Mon, 20 Jul 2020 11:45:49 +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 69D702070A for ; Mon, 20 Jul 2020 11:45:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 69D702070A 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 700BC6E082; Mon, 20 Jul 2020 11:45:48 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id EF4CC6E082 for ; Mon, 20 Jul 2020 11:45:45 +0000 (UTC) IronPort-SDR: 2HQE6mcF8PG6cghirqLr55iH2HONgy/rqv3jKyhohqZqSVwcGtYwF8qYP5/RYDMdYl4kQ646ON bDsBfzACE9Zg== X-IronPort-AV: E=McAfee;i="6000,8403,9687"; a="129460421" X-IronPort-AV: E=Sophos;i="5.75,374,1589266800"; d="scan'208";a="129460421" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2020 04:45:45 -0700 IronPort-SDR: HNNA+QQRuPz3iSDHs1OCW3+739//WD64gFxDVZ1j4dOhCyM2LwuT1eAO0b9QWjEPFwylIAb975 QTmzErKWhg0g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,374,1589266800"; d="scan'208";a="326039004" Received: from bhanu-nuc8i7beh.iind.intel.com ([10.145.162.210]) by FMSMGA003.fm.intel.com with ESMTP; 20 Jul 2020 04:45:43 -0700 From: Bhanuprakash Modem To: bhanuprakash.modem@intel.com, intel-gfx@lists.freedesktop.org Date: Tue, 21 Jul 2020 01:10:52 +0530 Message-Id: <20200720194053.24700-2-bhanuprakash.modem@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200720194053.24700-1-bhanuprakash.modem@intel.com> References: <20200720194053.24700-1-bhanuprakash.modem@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/2] i915/debug: Expose crtc dither state 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 dithering state for IGT testing. [How] Expose the dithering state for the crtc via a debugfs file "dither". Example usage: cat /sys/kernel/debug/dri/0/crtc-0/dither Signed-off-by: Bhanuprakash Modem --- drivers/gpu/drm/i915/i915_debugfs.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 94ed442910d6..18646566f2ea 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1902,13 +1902,30 @@ static const struct i915_debugfs_files { #endif }; +static int dither_state_show(struct seq_file *m, void *data) +{ + struct intel_crtc *crtc = to_intel_crtc(m->private); + struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state); + + seq_printf(m, "Dither: %u\n", crtc_state->dither); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(dither_state); + void i915_debugfs_register(struct drm_i915_private *dev_priv) { struct drm_minor *minor = dev_priv->drm.primary; + struct drm_device *dev = &dev_priv->drm; + struct drm_crtc *crtc; int i; i915_debugfs_params(dev_priv); + drm_for_each_crtc(crtc, dev) + debugfs_create_file("dither", S_IRUGO, crtc->debugfs_entry, crtc, + &dither_state_fops); + debugfs_create_file("i915_forcewake_user", S_IRUSR, minor->debugfs_root, to_i915(minor->dev), &i915_forcewake_fops); for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {