From patchwork Mon Nov 7 07:17:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kandpal, Suraj" X-Patchwork-Id: 13033867 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 9DFD3C433FE for ; Mon, 7 Nov 2022 07:19:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AA49610E1FC; Mon, 7 Nov 2022 07:19:36 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7A01B10E1FC for ; Mon, 7 Nov 2022 07:19:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1667805574; x=1699341574; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=a645WncmYnNosqLxQ4K+y36Nj18cvqO5jdsV85AOIrc=; b=KIxssRZZPdKVJpwOWJdk6SkUZFBFBFcXWCi3JHEORBpC4HwQ4SaQsWzB 2uY/f2wrL8DALxKikZydwG79MCALVdJQILboRjjhQzr3mXIGTws2bxzCo GWnXUr3fIwMbocet8M3D/wWJMSBZ7gwehBjurGHkah3pwCyTAZGDd4rjN ObCzL4zYtefhXCVVO4rO2q7tiKsNJQiD7LvyKbvbATsJyT+FscLOokrJv ABpb4Jg3+xZpRdfEVG59OrcNrm61fWoRgqPr4mihviUcy8OZeOBcNWaVR liFix3IS0LSfjOVNn1P25KZz1oZ4wfWkNNjI4rn8DRAmIDaWhVZiPl0wG g==; X-IronPort-AV: E=McAfee;i="6500,9779,10523"; a="307968031" X-IronPort-AV: E=Sophos;i="5.96,143,1665471600"; d="scan'208";a="307968031" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2022 23:19:21 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10523"; a="630389176" X-IronPort-AV: E=Sophos;i="5.96,143,1665471600"; d="scan'208";a="630389176" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.32]) by orsmga007.jf.intel.com with ESMTP; 06 Nov 2022 23:19:19 -0800 From: Suraj Kandpal To: intel-gfx@lists.freedesktop.org Date: Mon, 7 Nov 2022 12:47:59 +0530 Message-Id: <20221107071801.1352870-7-suraj.kandpal@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221107071801.1352870-1-suraj.kandpal@intel.com> References: <20221107071801.1352870-1-suraj.kandpal@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v5 6/8] drm/i915/dsc: Add debugfs entry to validate DSC YCbCr420 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" From: Swati Sharma DSC_YCBCR420_Sink_Support entry is added to i915_dsc_fec_support_show to depict if sink supports DSC YCbCr420. Also, new debugfs entry is created to enforce YCbCr420 output format. This is required because of our driver policy. If a mode is supported in both RGB and YCbCr420 output formats by the sink, our policy is to try RGB first and fall back to YCbCr420, if mode cannot be shown using RGB. So, to test YCbCr420, we need a debugfs entry (force_dsc_ycbcr420) to force thisoutput format; so that YCbCr420 code gets executed. Signed-off-by: Swati Sharma --- .../drm/i915/display/intel_display_debugfs.c | 85 +++++++++++++++++++ .../drm/i915/display/intel_display_types.h | 1 + 2 files changed, 86 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index cfc056a05bbf..2ccaf698cbfb 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1770,6 +1770,9 @@ static int i915_dsc_fec_support_show(struct seq_file *m, void *data) str_yes_no(drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd))); seq_printf(m, "Force_DSC_Enable: %s\n", str_yes_no(intel_dp->force_dsc_en)); + seq_printf(m, "DSC_YCBCR420_Sink_Support: %s\n", + str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd, + DP_DSC_YCbCr420_Native))); if (!intel_dp_is_edp(intel_dp)) seq_printf(m, "FEC_Sink_Support: %s\n", str_yes_no(drm_dp_sink_supports_fec(intel_dp->fec_capable))); @@ -1893,6 +1896,85 @@ static const struct file_operations i915_dsc_bpc_fops = { .write = i915_dsc_bpc_write }; +static int i915_dsc_ycbcr420_show(struct seq_file *m, void *data) +{ + struct drm_connector *connector = m->private; + struct drm_device *dev = connector->dev; + struct drm_crtc *crtc; + struct intel_dp *intel_dp; + struct intel_crtc_state *crtc_state; + struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector)); + int ret; + + if (!encoder) + return -ENODEV; + + ret = drm_modeset_lock_single_interruptible(&dev->mode_config.connection_mutex); + if (ret) + return ret; + + crtc = connector->state->crtc; + if (connector->status != connector_status_connected || !crtc) { + ret = -ENODEV; + goto out; + } + + intel_dp = intel_attached_dp(to_intel_connector(connector)); + crtc_state = to_intel_crtc_state(crtc->state); + seq_printf(m, "Force_DSC_YCBCR420_Enable: %s\n", + str_yes_no(intel_dp->force_dsc_ycbcr420_en)); + +out: drm_modeset_unlock(&dev->mode_config.connection_mutex); + + return ret; +} + +static ssize_t i915_dsc_ycbcr420_write(struct file *file, + const char __user *ubuf, + size_t len, loff_t *offp) +{ + struct drm_connector *connector = + ((struct seq_file *)file->private_data)->private; + struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector)); + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + bool dsc_ycbcr420_enable = false; + int ret; + + if (len == 0) + return 0; + + drm_dbg(&i915->drm, + "Copied %zu bytes from user to force YCBCR420 for DSC\n", len); + + ret = kstrtobool_from_user(ubuf, len, &dsc_ycbcr420_enable); + if (ret < 0) + return ret; + + drm_dbg(&i915->drm, "Got %s for DSC YCBCR420 Enable\n", + (dsc_ycbcr420_enable) ? "true" : "false"); + intel_dp->force_dsc_ycbcr420_en = dsc_ycbcr420_enable; + + *offp += len; + + return len; +} + +static int i915_dsc_ycbcr420_open(struct inode *inode, + struct file *file) +{ + return single_open(file, i915_dsc_ycbcr420_show, inode->i_private); +} + +static const struct file_operations i915_dsc_ycbcr420_fops = { + .owner = THIS_MODULE, + .open = i915_dsc_ycbcr420_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_dsc_ycbcr420_write +}; + /* * Returns the Current CRTC's bpc. * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc @@ -1964,6 +2046,9 @@ void intel_connector_debugfs_add(struct intel_connector *intel_connector) debugfs_create_file("i915_dsc_bpc", 0644, root, connector, &i915_dsc_bpc_fops); + + debugfs_create_file("i915_dsc_ycbcr420", 0644, root, + connector, &i915_dsc_ycbcr420_fops); } if (connector->connector_type == DRM_MODE_CONNECTOR_DSI || diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index c6abaaa46e17..4b982a0dadf6 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1717,6 +1717,7 @@ struct intel_dp { /* Display stream compression testing */ bool force_dsc_en; + bool force_dsc_ycbcr420_en; int force_dsc_bpc; bool hobl_failed;