From patchwork Thu May 19 09:51:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Modem, Bhanuprakash" X-Patchwork-Id: 12854726 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 75195C433F5 for ; Thu, 19 May 2022 09:55:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C539B11B325; Thu, 19 May 2022 09:54:57 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id F3BDC11B32C; Thu, 19 May 2022 09:54:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1652954096; x=1684490096; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XS7DAE30lSTUEbJQlyptEc49QiVX5I/Chljn/cD5ZYI=; b=bxb2V8yFm13hEqdblP/B5nEP4E84FPLe8NZvGax2rqLpSokaIhFTrBPY Z0BwukjvD4gI3WebQ1JfcbwyLG4MnRs+5D+vipkPQScnWHP4/i4bH77mE ARhkKafOx6TFq9v7Gm/z2MJKLpZVspMhG+acSthFJbayarkCQSOKpTfC5 sigVMBedjN+V3Tqddag6fb04fKhxUt/l4zSWspfwklyJmf+sR1Bx5Qmbj NsMcacnx5tH2YIOWZLhieRE34OZlqdH+o6hEC3MpTN6ejbc9IeiE5elks 8iUXRR4ZKJp/8kVB5wHjiJY4ufB+zwzAoAW/t7zMJsg/2WPnyap0RijYh w==; X-IronPort-AV: E=McAfee;i="6400,9594,10351"; a="252019970" X-IronPort-AV: E=Sophos;i="5.91,237,1647327600"; d="scan'208";a="252019970" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2022 02:54:55 -0700 X-IronPort-AV: E=Sophos;i="5.91,237,1647327600"; d="scan'208";a="606404182" Received: from bhanu-nuclab.iind.intel.com ([10.145.162.173]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2022 02:54:52 -0700 From: Bhanuprakash Modem To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org Date: Thu, 19 May 2022 15:21:48 +0530 Message-Id: <20220519095149.3560034-3-bhanuprakash.modem@intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220519095149.3560034-1-bhanuprakash.modem@intel.com> References: <20220519095149.3560034-1-bhanuprakash.modem@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [CI 2/3] drm/i915/display/debug: Expose crtc current bpc 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: , Cc: Jani Nikula Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This new debugfs will expose the currently using bpc by crtc. It is very useful for verifying whether we enter the correct output color depth from IGT. This patch will also add the connector's max supported bpc to "i915_display_info" debugfs. Example: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc Current: 8 Cc: Jani Nikula Cc: Ville Syrjälä Cc: Uma Shankar Signed-off-by: Bhanuprakash Modem Reviewed-by: Arun R Murthy Acked-by: Jani Nikula --- .../drm/i915/display/intel_display_debugfs.c | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) -- 2.35.1 diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 452d773fd4e3..6c3954479047 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -590,6 +590,8 @@ static void intel_connector_info(struct seq_file *m, seq_puts(m, "\tHDCP version: "); intel_hdcp_info(m, intel_connector); + seq_printf(m, "\tmax bpc: %u\n", connector->display_info.bpc); + intel_panel_info(m, intel_connector); seq_printf(m, "\tmodes:\n"); @@ -2202,6 +2204,29 @@ static const struct file_operations i915_dsc_bpp_fops = { .write = i915_dsc_bpp_write }; +/* + * Returns the Current CRTC's bpc. + * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc + */ +static int i915_current_bpc_show(struct seq_file *m, void *data) +{ + struct intel_crtc *crtc = to_intel_crtc(m->private); + struct intel_crtc_state *crtc_state; + int ret; + + ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex); + if (ret) + return ret; + + crtc_state = to_intel_crtc_state(crtc->base.state); + seq_printf(m, "Current: %u\n", crtc_state->pipe_bpp / 3); + + drm_modeset_unlock(&crtc->base.mutex); + + return ret; +} +DEFINE_SHOW_ATTRIBUTE(i915_current_bpc); + /** * intel_connector_debugfs_add - add i915 specific connector debugfs files * @connector: pointer to a registered drm_connector @@ -2272,4 +2297,7 @@ void intel_crtc_debugfs_add(struct drm_crtc *crtc) crtc_updates_add(crtc); intel_fbc_crtc_debugfs_add(to_intel_crtc(crtc)); + + debugfs_create_file("i915_current_bpc", 0444, crtc->debugfs_entry, crtc, + &i915_current_bpc_fops); }