From patchwork Wed Feb 22 05:31:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kandpal, Suraj" X-Patchwork-Id: 13148726 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 882FFC61DA4 for ; Wed, 22 Feb 2023 05:33:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 63BF610E3F0; Wed, 22 Feb 2023 05:33:29 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id DB5E910E3E6; Wed, 22 Feb 2023 05:33:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1677043997; x=1708579997; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1kHtZgGVVxWbNNIyOu1Cm2mFmUPRXUZpcBfSca00rIE=; b=PWWrTlbPoZ3eaIPKRgEY3Lm0KM2gCkpLx3zI0BQkYrPAzIT4gjvEKp/+ unAZOhhYspKV6HnfWbsTZgRN5SoPrZ+glszMlks440yz1m1kH267nFo86 lCWlJ9jEwRM/VUdjdceJ9zrxVIHvojkyBEmKbPlJLWEXcFlPMESMHJGv4 AmGCGR9TRrCva+yqmZRsVZgZE67Bh09G2aIyg4YEfsWtjBqJj/+Rh4rOr 5SqWNRbbib2vavkQhGzjNqh9PV5gZXra+KX3QFq9biL711pHhn49u/U1K nTX4PAb0IG+vLT3qS7XCR2gfmo2DDuM4/XrnX7FoZ/M2ppg3Zl81uyPjv g==; X-IronPort-AV: E=McAfee;i="6500,9779,10628"; a="332843246" X-IronPort-AV: E=Sophos;i="5.97,317,1669104000"; d="scan'208";a="332843246" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Feb 2023 21:33:17 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10628"; a="917450593" X-IronPort-AV: E=Sophos;i="5.97,317,1669104000"; d="scan'208";a="917450593" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.32]) by fmsmga006.fm.intel.com with ESMTP; 21 Feb 2023 21:33:15 -0800 From: Suraj Kandpal To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH 7/7] drm/i915/dsc: Add debugfs entry to validate DSC output formats Date: Wed, 22 Feb 2023 11:01:53 +0530 Message-Id: <20230222053153.3658345-8-suraj.kandpal@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230222053153.3658345-1-suraj.kandpal@intel.com> References: <20230222053153.3658345-1-suraj.kandpal@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ankit.k.nautiyal@intel.com, uma.shankar@intel.com, Swati Sharma Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Swati Sharma DSC_Output_Format_Sink_Support entry is added to i915_dsc_fec_support_show to depict if sink supports DSC output formats (RGB/YCbCr420/YCbCr444). Also, new debugfs entry is created to enforce output format. This is required because of our driver policy. For ex. 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 other output formats like YCbCr420 or YCbCr444, we need a debugfs entry (force_dsc_output_format) to force this output format. v2: -Func name changed to intel_output_format_name() (Jani N) -Return forced o/p format from intel_dp_output_format() (Jani N) v3: -output_format_str[] to remain static (Jani N) Signed-off-by: Swati Sharma Reviewed-by: Uma Shankar --- .../drm/i915/display/intel_crtc_state_dump.c | 4 +- .../drm/i915/display/intel_crtc_state_dump.h | 2 + .../drm/i915/display/intel_display_debugfs.c | 78 +++++++++++++++++++ .../drm/i915/display/intel_display_types.h | 1 + drivers/gpu/drm/i915/display/intel_dp.c | 4 + 5 files changed, 87 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c index 2422d6ef5777..45655efc9468 100644 --- a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c +++ b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c @@ -121,7 +121,7 @@ static const char * const output_format_str[] = { [INTEL_OUTPUT_FORMAT_YCBCR444] = "YCBCR4:4:4", }; -static const char *output_formats(enum intel_output_format format) +const char *intel_output_format_name(enum intel_output_format format) { if (format >= ARRAY_SIZE(output_format_str)) return "invalid"; @@ -179,7 +179,7 @@ void intel_crtc_state_dump(const struct intel_crtc_state *pipe_config, "active: %s, output_types: %s (0x%x), output format: %s\n", str_yes_no(pipe_config->hw.active), buf, pipe_config->output_types, - output_formats(pipe_config->output_format)); + intel_output_format_name(pipe_config->output_format)); drm_dbg_kms(&i915->drm, "cpu_transcoder: %s, pipe bpp: %i, dithering: %i\n", diff --git a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.h b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.h index 9399c35b7e5e..780f3f1190d7 100644 --- a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.h +++ b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.h @@ -8,9 +8,11 @@ struct intel_crtc_state; struct intel_atomic_state; +enum intel_output_format; void intel_crtc_state_dump(const struct intel_crtc_state *crtc_state, struct intel_atomic_state *state, const char *context); +const char *intel_output_format_name(enum intel_output_format format); #endif /* __INTEL_CRTC_STATE_H__ */ diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index 49a7c00c0664..7ebac255865f 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -12,6 +12,7 @@ #include "i915_irq.h" #include "i915_reg.h" #include "intel_de.h" +#include "intel_crtc_state_dump.h" #include "intel_display_debugfs.h" #include "intel_display_power.h" #include "intel_display_power_well.h" @@ -1750,6 +1751,13 @@ static int i915_dsc_fec_support_show(struct seq_file *m, void *data) str_yes_no(crtc_state->dsc.compression_enable)); seq_printf(m, "DSC_Sink_Support: %s\n", str_yes_no(drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd))); + seq_printf(m, "DSC_Output_Format_Sink_Support: RGB: %s YCBCR420: %s YCBCR444: %s\n", + str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd, + DP_DSC_RGB)), + str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd, + DP_DSC_YCbCr420_Native)), + str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd, + DP_DSC_YCbCr444))); seq_printf(m, "Force_DSC_Enable: %s\n", str_yes_no(intel_dp->force_dsc_en)); if (!intel_dp_is_edp(intel_dp)) @@ -1875,6 +1883,73 @@ static const struct file_operations i915_dsc_bpc_fops = { .write = i915_dsc_bpc_write }; +static int i915_dsc_output_format_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_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; + } + + crtc_state = to_intel_crtc_state(crtc->state); + seq_printf(m, "DSC_Output_Format: %s\n", + intel_output_format_name(crtc_state->output_format)); + +out: drm_modeset_unlock(&dev->mode_config.connection_mutex); + + return ret; +} + +static ssize_t i915_dsc_output_format_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 intel_dp *intel_dp = enc_to_intel_dp(encoder); + int dsc_output_format = 0; + int ret; + + ret = kstrtoint_from_user(ubuf, len, 0, &dsc_output_format); + if (ret < 0) + return ret; + + intel_dp->force_dsc_output_format = dsc_output_format; + *offp += len; + + return len; +} + +static int i915_dsc_output_format_open(struct inode *inode, + struct file *file) +{ + return single_open(file, i915_dsc_output_format_show, inode->i_private); +} + +static const struct file_operations i915_dsc_output_format_fops = { + .owner = THIS_MODULE, + .open = i915_dsc_output_format_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_dsc_output_format_write +}; + /* * Returns the Current CRTC's bpc. * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc @@ -1946,6 +2021,9 @@ 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_output_format", 0644, root, + connector, &i915_dsc_output_format_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 9ccae7a46020..9f7951b49c42 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1743,6 +1743,7 @@ struct intel_dp { /* Display stream compression testing */ bool force_dsc_en; + int force_dsc_output_format; int force_dsc_bpc; bool hobl_failed; diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 95e9d0365e23..13bb4497b1fe 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -76,6 +76,7 @@ #include "intel_tc.h" #include "intel_vdsc.h" #include "intel_vrr.h" +#include "intel_crtc_state_dump.h" /* DP DSC throughput values used for slice count calculations KPixels/s */ #define DP_DSC_PEAK_PIXEL_RATE 2720000 @@ -810,6 +811,9 @@ intel_dp_output_format(struct intel_connector *connector, { struct intel_dp *intel_dp = intel_attached_dp(connector); + if (intel_dp->force_dsc_output_format) + return intel_dp->force_dsc_output_format; + if (!connector->base.ycbcr_420_allowed || !ycbcr_420_output) return INTEL_OUTPUT_FORMAT_RGB;