From patchwork Fri Oct 6 14:15:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Lisovskiy X-Patchwork-Id: 13411636 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 7A9C9E81DFF for ; Fri, 6 Oct 2023 14:15:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B30DF10E00D; Fri, 6 Oct 2023 14:15:54 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4EA7B10E00D for ; Fri, 6 Oct 2023 14:15:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1696601753; x=1728137753; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=RZO9JqyJGoykIm/yCfghIXR7JYDHTySA+P3ou7HJNc8=; b=WlByytPQeiBFe9Ime+dnvKMr9Fnj5CdBpVTnQhZU7WA5GYd7i/j0Bqb6 tXeFZLFSIw9CjMyFLq3PP6FEhMuvZKRaTdWNUDt51wDYty2DbKfikZl6V vKuGeuZFrVEeeNTVX+JFh6tBIddxz2CNLlH82OwT2otKuUU39KNbD2ehV DGNbJG3TWqys+RVyhs+uix20oP+r0j5p19F1dJ+6air4+d+tHYj09ytCA +tQLciafFhWF2IWmNR2o4HEi94ksUxJrXmW6kRslwvzWKOXXqdYkPwsgo L8bbsXnV+O8OPYKhDRhHwtCWJJyv9JhnOcX6oAAPsTFU/hE9U6EOSv3gR w==; X-IronPort-AV: E=McAfee;i="6600,9927,10855"; a="387636580" X-IronPort-AV: E=Sophos;i="6.03,204,1694761200"; d="scan'208";a="387636580" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Oct 2023 07:15:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10855"; a="702070144" X-IronPort-AV: E=Sophos;i="6.03,204,1694761200"; d="scan'208";a="702070144" Received: from unknown (HELO slisovsk-Lenovo-ideapad-720S-13IKB.fi.intel.com) ([10.237.72.65]) by orsmga003.jf.intel.com with ESMTP; 06 Oct 2023 07:15:51 -0700 From: Stanislav Lisovskiy To: intel-gfx@lists.freedesktop.org Date: Fri, 6 Oct 2023 17:15:50 +0300 Message-Id: <20231006141550.25918-1-stanislav.lisovskiy@intel.com> X-Mailer: git-send-email 2.37.3 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915: Add bigjoiner force enable option to 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" For validation purposes, it might be useful to be able to force Bigjoiner mode, even if current dotclock/resolution do not require that. Lets add such to option to debugfs. Signed-off-by: Stanislav Lisovskiy --- .../drm/i915/display/intel_display_debugfs.c | 71 +++++++++++++++++++ .../drm/i915/display/intel_display_types.h | 2 + drivers/gpu/drm/i915/display/intel_dp.c | 3 +- 3 files changed, 75 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index f6d7c4d45fae..5855c6de91a7 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1399,6 +1399,35 @@ out: drm_modeset_unlock(&dev->mode_config.connection_mutex); return ret; } +static int i915_bigjoiner_enable_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_encoder *encoder = intel_attached_encoder(to_intel_connector(connector)); + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + 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; + } + + seq_printf(m, "Bigjoiner enable: %d\n", intel_dp->force_bigjoiner_en); + +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) @@ -1420,12 +1449,39 @@ static ssize_t i915_dsc_output_format_write(struct file *file, return len; } +static ssize_t i915_bigjoiner_enable_fops_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 bigjoiner_en = 0; + int ret; + + ret = kstrtoint_from_user(ubuf, len, 0, &bigjoiner_en); + if (ret < 0) + return ret; + + intel_dp->force_bigjoiner_en = bigjoiner_en; + *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 int i915_bigjoiner_enable_open(struct inode *inode, + struct file *file) +{ + return single_open(file, i915_bigjoiner_enable_show, inode->i_private); +} + static const struct file_operations i915_dsc_output_format_fops = { .owner = THIS_MODULE, .open = i915_dsc_output_format_open, @@ -1435,6 +1491,15 @@ static const struct file_operations i915_dsc_output_format_fops = { .write = i915_dsc_output_format_write }; +static const struct file_operations i915_bigjoiner_enable_fops = { + .owner = THIS_MODULE, + .open = i915_bigjoiner_enable_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_bigjoiner_enable_fops_write +}; + /* * Returns the Current CRTC's bpc. * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/i915_current_bpc @@ -1514,6 +1579,12 @@ void intel_connector_debugfs_add(struct intel_connector *intel_connector) connector, &i915_dsc_output_format_fops); } + if (intel_dp_can_bigjoiner(enc_to_intel_dp(intel_connector->encoder)) && + connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { + debugfs_create_file("i915_bigjoiner_force_enable", 0644, root, + connector, &i915_bigjoiner_enable_fops); + } + if (connector->connector_type == DRM_MODE_CONNECTOR_DSI || connector->connector_type == DRM_MODE_CONNECTOR_eDP || connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort || diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 8d8b2f8d37a9..ecec8a25838e 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1753,6 +1753,8 @@ struct intel_dp { bool is_mst; int active_mst_links; + bool force_bigjoiner_en; + /* connector directly attached - won't be use for modeset in mst world */ struct intel_connector *attached_connector; diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index f0f43aeabd21..6665214bd332 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1153,7 +1153,8 @@ bool intel_dp_need_bigjoiner(struct intel_dp *intel_dp, if (!intel_dp_can_bigjoiner(intel_dp)) return false; - return clock > i915->max_dotclk_freq || hdisplay > 5120; + return clock > i915->max_dotclk_freq || hdisplay > 5120 || + intel_dp->force_bigjoiner_en; } static enum drm_mode_status