From patchwork Wed Jun 24 19:00:09 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 6670001 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5D6D7C05AC for ; Wed, 24 Jun 2015 19:00:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6F675205DF for ; Wed, 24 Jun 2015 19:00:53 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 7EEED205BB for ; Wed, 24 Jun 2015 19:00:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EDE0D6EBE0; Wed, 24 Jun 2015 12:00:51 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id B42326EBE0 for ; Wed, 24 Jun 2015 12:00:50 -0700 (PDT) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP; 24 Jun 2015 12:00:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,673,1427785200"; d="scan'208";a="513682144" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.88]) by FMSMGA003.fm.intel.com with SMTP; 24 Jun 2015 12:00:48 -0700 Received: by stinkbox (sSMTP sendmail emulation); Wed, 24 Jun 2015 22:00:38 +0300 From: ville.syrjala@linux.intel.com To: intel-gfx@lists.freedesktop.org Date: Wed, 24 Jun 2015 22:00:09 +0300 Message-Id: <1435172410-9834-10-git-send-email-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.3.6 In-Reply-To: <1435172410-9834-1-git-send-email-ville.syrjala@linux.intel.com> References: <1435172410-9834-1-git-send-email-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 09/10] drm/i915: Add debugfs knobs for VLVCHV memory latency values X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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" X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ville Syrjälä Allow tweaking the VLV/CHV memory latencies thorugh sysfs, like we do for ILK+. Signed-off-by: Ville Syrjälä Reviewed-by: Clint Taylor Tested-by: Clint Taylor --- drivers/gpu/drm/i915/i915_debugfs.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index c49fe2a..656bb0d 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -4180,8 +4180,15 @@ static const struct file_operations i915_displayport_test_type_fops = { static void wm_latency_show(struct seq_file *m, const uint16_t wm[8]) { struct drm_device *dev = m->private; - int num_levels = ilk_wm_max_level(dev) + 1; int level; + int num_levels; + + if (IS_CHERRYVIEW(dev)) + num_levels = 3; + else if (IS_VALLEYVIEW(dev)) + num_levels = 1; + else + num_levels = ilk_wm_max_level(dev) + 1; drm_modeset_lock_all(dev); @@ -4190,9 +4197,9 @@ static void wm_latency_show(struct seq_file *m, const uint16_t wm[8]) /* * - WM1+ latency values in 0.5us units - * - latencies are in us on gen9 + * - latencies are in us on gen9/vlv/chv */ - if (INTEL_INFO(dev)->gen >= 9) + if (INTEL_INFO(dev)->gen >= 9 || IS_VALLEYVIEW(dev)) latency *= 10; else if (level > 0) latency *= 5; @@ -4256,7 +4263,7 @@ static int pri_wm_latency_open(struct inode *inode, struct file *file) { struct drm_device *dev = inode->i_private; - if (HAS_GMCH_DISPLAY(dev)) + if (INTEL_INFO(dev)->gen < 5) return -ENODEV; return single_open(file, pri_wm_latency_show, dev); @@ -4288,11 +4295,18 @@ static ssize_t wm_latency_write(struct file *file, const char __user *ubuf, struct seq_file *m = file->private_data; struct drm_device *dev = m->private; uint16_t new[8] = { 0 }; - int num_levels = ilk_wm_max_level(dev) + 1; + int num_levels; int level; int ret; char tmp[32]; + if (IS_CHERRYVIEW(dev)) + num_levels = 3; + else if (IS_VALLEYVIEW(dev)) + num_levels = 1; + else + num_levels = ilk_wm_max_level(dev) + 1; + if (len >= sizeof(tmp)) return -EINVAL;