From patchwork Fri Sep 6 12:57:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Nautiyal, Ankit K" X-Patchwork-Id: 13794135 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 EF99DCE7B03 for ; Fri, 6 Sep 2024 12:56:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1216110E191; Fri, 6 Sep 2024 12:56:32 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="a6ZKWG4P"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id BF27310E06C for ; Fri, 6 Sep 2024 12:56:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1725627391; x=1757163391; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=P6NJUEwt7qU+DFq5RwLweEmGpq/NsY9KzFaG7GTk49g=; b=a6ZKWG4PmVU0noJ/ZODahrkJke8L6CggNtNiZy2OsMdKz4376aw2ZldT U5rk9FL+AA8qQ8jMyChBZ23RY1QzAaAsTBI4WBcb3kCc8uPF5p81U7Fry 4hukW4FlgYcKQCe1AcXPRwyNdx9r8pLwfRsqY8YTT/EZn7l09XlbUbvym yqlX27F06NqmzP/LGtB3nwT/l86RpgiIJ/YlAz+1OgMatnSz0Z4lAtbrt NqIztVWGPKoGl2LklHotY/QAm7WXs2mqVqiEPG0jMtUwdlKHvN21QFloi bstXrz1Y2nZpweu+tZwWapoH+yKnW//tsMeNaIE9ioheykSlTum/tSWY9 A==; X-CSE-ConnectionGUID: BwE6E5BQRnejUT29RmX9Sg== X-CSE-MsgGUID: NzURDO4lS4uuRJG4r414fQ== X-IronPort-AV: E=McAfee;i="6700,10204,11187"; a="24257397" X-IronPort-AV: E=Sophos;i="6.10,207,1719903600"; d="scan'208";a="24257397" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Sep 2024 05:56:31 -0700 X-CSE-ConnectionGUID: PmCsRSm3RhWdn9x4LCasKA== X-CSE-MsgGUID: VnCi9OiCSDqDvI1/GRDMwg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,207,1719903600"; d="scan'208";a="66691043" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Sep 2024 05:56:30 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org Cc: jani.saarinen@intel.com, ville.syrjala@linux.intel.com Subject: [PATCH 01/14] drm/i915/display: Modify debugfs for joiner to force n pipes Date: Fri, 6 Sep 2024 18:27:54 +0530 Message-ID: <20240906125807.3960642-2-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240906125807.3960642-1-ankit.k.nautiyal@intel.com> References: <20240906125807.3960642-1-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) Signed-off-by: Ankit Nautiyal --- .../drm/i915/display/intel_display_debugfs.c | 71 ++++++++++++++++++- .../drm/i915/display/intel_display_types.h | 8 ++- drivers/gpu/drm/i915/display/intel_dp.c | 2 +- 3 files changed, 77 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 830b9eb60976..0ef573afd8a1 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1504,6 +1504,73 @@ 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; + struct drm_i915_private *i915 = to_i915(connector->base.dev); + int ret; + + ret = drm_modeset_lock_single_interruptible(&i915->drm.mode_config.connection_mutex); + if (ret) + return ret; + + seq_printf(m, "Force_joined_pipes: %d\n", connector->force_joined_pipes); + + drm_modeset_unlock(&i915->drm.mode_config.connection_mutex); + + return ret; +} + +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; + struct drm_i915_private *i915 = to_i915(connector->base.dev); + int force_join_pipes = 0; + int ret; + + if (len == 0) + return 0; + + drm_dbg(&i915->drm, + "Copied %zu bytes from user to force joiner\n", len); + + ret = kstrtoint_from_user(ubuf, len, 0, &force_join_pipes); + if (ret < 0) + return ret; + + drm_dbg(&i915->drm, "Got %d for force joining pipes\n", force_join_pipes); + + if (force_join_pipes < INTEL_NONE_JOINER_PIPES || + force_join_pipes >= INTEL_INVALID_JOINER_PIPES) { + drm_dbg(&i915->drm, "Ignoring Invalid num of pipes %d for force joining\n", + force_join_pipes); + connector->force_joined_pipes = INTEL_NONE_JOINER_PIPES; + } else { + connector->force_joined_pipes = force_join_pipes; + } + + *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 @@ -1553,8 +1620,8 @@ void intel_connector_debugfs_add(struct intel_connector *connector) if (DISPLAY_VER(i915) >= 11 && (connector_type == DRM_MODE_CONNECTOR_DisplayPort || connector_type == DRM_MODE_CONNECTOR_eDP)) { - 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 733de5edcfdb..c213fb61ceb7 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -486,6 +486,12 @@ struct intel_hdcp { enum transcoder stream_transcoder; }; +enum intel_joiner_pipe_count { + INTEL_NONE_JOINER_PIPES = 0, + INTEL_BIG_JOINER_PIPES = 2, + INTEL_INVALID_JOINER_PIPES, +}; + struct intel_connector { struct drm_connector base; /* @@ -524,7 +530,7 @@ struct intel_connector { struct intel_dp *mst_port; - bool force_bigjoiner_enable; + enum intel_joiner_pipe_count 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 a1fcedfd404b..862a460c32b7 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1271,7 +1271,7 @@ 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 == INTEL_BIG_JOINER_PIPES; } bool intel_dp_has_dsc(const struct intel_connector *connector)