From patchwork Fri Sep 27 08:38:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Nautiyal, Ankit K" X-Patchwork-Id: 13814003 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 C7F71CEBF88 for ; Fri, 27 Sep 2024 08:36:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6F65310EC5C; Fri, 27 Sep 2024 08:36:44 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="nfvzjpRO"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) by gabe.freedesktop.org (Postfix) with ESMTPS id C4F3D10EC51; Fri, 27 Sep 2024 08:36:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1727426201; x=1758962201; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=2sjriTAUTn7S8LZy2GcR9VUwakBHawDyR9Jc0GYXj1A=; b=nfvzjpRO+olehIXdMuuje/WfHQimhAYa+Kkyzy5v/fJPzaBV1O67Mbff 30zfcc2xRkoGFrTt8m08BmZNNl6v3godamggTHA4yBBXU9+GTPRuBbqjQ v/+BIUCVQAF4iLg/rooo2wGxHBYI8VISo7yAd88BttsVqu69hicnjvXVh g0yPQViPXRPmmvecyj0nHusO8CbuvXfja2zAyo5dswK+DRE7UGPyg2oqJ YxFNQ9Z8V49TNRh1OLkb1rcNNx7ni7GlM5G6Xfzza7Vwvk1mNpWzaPhaQ /QZe7tumg3tP/TK7Sc7aWfkdOMik/1TU/C9kAotr12xd/wLK9CjqZDA+N Q==; X-CSE-ConnectionGUID: tLWOY1YTQNuIbcsJaopbKQ== X-CSE-MsgGUID: VbKDVu1CR3yuscgcNKPzLA== X-IronPort-AV: E=McAfee;i="6700,10204,11207"; a="51977615" X-IronPort-AV: E=Sophos;i="6.11,158,1725346800"; d="scan'208";a="51977615" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 01:36:41 -0700 X-CSE-ConnectionGUID: AXabRDMxQZqVhUsuVnWUow== X-CSE-MsgGUID: xSG2TTWFS3qYJv5ToFwSrw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,158,1725346800"; d="scan'208";a="77409368" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2024 01:36:40 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org Cc: intel-xe@lists.freedesktop.org, suraj.kandpal@intel.com, ville.syrjala@linux.intel.com Subject: [PATCH 03/17] drm/i915/display: Modify debugfs for joiner to force n pipes Date: Fri, 27 Sep 2024 14:08:17 +0530 Message-ID: <20240927083831.3913645-4-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240927083831.3913645-1-ankit.k.nautiyal@intel.com> References: <20240927083831.3913645-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 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" At the moment, the debugfs for joiner allows only to force enable/disable pipe joiner for 2 pipes. Modify it to force join 'n' number of pipes, where n is a valid pipe joiner configuration. This will help in case of ultra joiner where 4 pipes are joined. v2: -Fix commit message to state that only valid joiner config can be forced. (Suraj) -Rename the identifiers to have INTEL_BIG/NONE_JOINER_PIPES. (Suraj) v3: -Avoid enum for joiner pipe counts, use bare numbers for better readability. (Ville) -Remove redundant prints from debugfs. (Ville) v4: Return -EINVAL if joiner forced to an invalid value. v5: Remove extra debug message. (Ville) v6: Minor fix in switch case. (Ville) Signed-off-by: Ankit Nautiyal Reviewed-by: Ville Syrjälä --- .../drm/i915/display/intel_display_debugfs.c | 57 ++++++++++++++++++- .../drm/i915/display/intel_display_types.h | 2 +- drivers/gpu/drm/i915/display/intel_dp.c | 2 +- 3 files changed, 57 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index c38023b43682..ae3715f0f1d8 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1316,6 +1316,59 @@ static int intel_crtc_pipe_show(struct seq_file *m, void *unused) } DEFINE_SHOW_ATTRIBUTE(intel_crtc_pipe); +static int i915_joiner_show(struct seq_file *m, void *data) +{ + struct intel_connector *connector = m->private; + + seq_printf(m, "%d\n", connector->force_joined_pipes); + + return 0; +} + +static ssize_t i915_joiner_write(struct file *file, + const char __user *ubuf, + size_t len, loff_t *offp) +{ + struct seq_file *m = file->private_data; + struct intel_connector *connector = m->private; + int force_joined_pipes = 0; + int ret; + + if (len == 0) + return 0; + + ret = kstrtoint_from_user(ubuf, len, 0, &force_joined_pipes); + if (ret < 0) + return ret; + + switch (force_joined_pipes) { + case 0: + case 2: + connector->force_joined_pipes = force_joined_pipes; + break; + default: + return -EINVAL; + } + + *offp += len; + + return len; +} + +static int i915_joiner_open(struct inode *inode, struct file *file) +{ + return single_open(file, i915_joiner_show, inode->i_private); +} + +static const struct file_operations i915_joiner_fops = { + .owner = THIS_MODULE, + .open = i915_joiner_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = i915_joiner_write +}; + /** * intel_connector_debugfs_add - add i915 specific connector debugfs files * @connector: pointer to a registered intel_connector @@ -1365,8 +1418,8 @@ void intel_connector_debugfs_add(struct intel_connector *connector) if ((connector_type == DRM_MODE_CONNECTOR_DisplayPort || connector_type == DRM_MODE_CONNECTOR_eDP) && intel_dp_has_joiner(intel_attached_dp(connector))) { - debugfs_create_bool("i915_bigjoiner_force_enable", 0644, root, - &connector->force_bigjoiner_enable); + debugfs_create_file("i915_joiner_force_enable", 0644, root, + connector, &i915_joiner_fops); } if (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 7ff97e5b83dd..7fb3eeb0e0f2 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -524,7 +524,7 @@ struct intel_connector { struct intel_dp *mst_port; - bool force_bigjoiner_enable; + int force_joined_pipes; struct { struct drm_dp_aux *dsc_decompression_aux; diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 16dc1d26d2a2..a1a64758d30d 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1274,7 +1274,7 @@ bool intel_dp_need_joiner(struct intel_dp *intel_dp, return false; return clock > i915->display.cdclk.max_dotclk_freq || hdisplay > 5120 || - connector->force_bigjoiner_enable; + connector->force_joined_pipes == 2; } bool intel_dp_has_dsc(const struct intel_connector *connector)