From patchwork Wed Apr 13 09:18:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 8819961 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 088F7C0555 for ; Wed, 13 Apr 2016 09:18:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 06ACE2026C for ; Wed, 13 Apr 2016 09:18:51 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id CFF892035D for ; Wed, 13 Apr 2016 09:18:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0757B6E889; Wed, 13 Apr 2016 09:18:35 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mblankhorst.nl (mblankhorst.nl [IPv6:2a02:2308::216:3eff:fe92:dfa3]) by gabe.freedesktop.org (Postfix) with ESMTPS id 202936E3AA; Wed, 13 Apr 2016 09:18:29 +0000 (UTC) From: Maarten Lankhorst To: intel-gfx@lists.freedesktop.org Date: Wed, 13 Apr 2016 11:18:17 +0200 Message-Id: <1460539104-15661-5-git-send-email-maarten.lankhorst@linux.intel.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1460539104-15661-1-git-send-email-maarten.lankhorst@linux.intel.com> References: <1460539104-15661-1-git-send-email-maarten.lankhorst@linux.intel.com> Cc: dri-devel@lists.freedesktop.org Subject: [Intel-gfx] [PATCH v2 04/11] drm/i915: Add support for detecting vblanks when hw frame counter is unavailable. 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: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-5.2 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 This uses the newly created drm_accurate_vblank_count_and_time to accurately get a vblank count when the hw counter is unavailable. --- drivers/gpu/drm/i915/intel_display.c | 10 ++++++++++ drivers/gpu/drm/i915/intel_drv.h | 3 +++ drivers/gpu/drm/i915/intel_sprite.c | 8 ++------ 3 files changed, 15 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index dc42335409b3..f1a895153e64 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13498,6 +13498,16 @@ static int intel_atomic_prepare_commit(struct drm_device *dev, return ret; } +u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc) +{ + struct drm_device *dev = crtc->base.dev; + + if (!dev->max_vblank_count) + return drm_accurate_vblank_count(&crtc->base); + + return dev->driver->get_vblank_counter(dev, crtc->pipe); +} + static void intel_atomic_wait_for_vblanks(struct drm_device *dev, struct drm_i915_private *dev_priv, unsigned crtc_mask) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index a74edecfd179..a2712f6f1eb3 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1141,6 +1141,9 @@ intel_wait_for_vblank_if_active(struct drm_device *dev, int pipe) if (crtc->active) intel_wait_for_vblank(dev, pipe); } + +u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc); + int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp); void vlv_wait_port_ready(struct drm_i915_private *dev_priv, struct intel_digital_port *dport, diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c index 0f3e2303e0e9..e2de6b0df5a8 100644 --- a/drivers/gpu/drm/i915/intel_sprite.c +++ b/drivers/gpu/drm/i915/intel_sprite.c @@ -80,9 +80,7 @@ static int usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, */ void intel_pipe_update_start(struct intel_crtc *crtc) { - struct drm_device *dev = crtc->base.dev; const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; - enum pipe pipe = crtc->pipe; long timeout = msecs_to_jiffies_timeout(1); int scanline, min, max, vblank_start; wait_queue_head_t *wq = drm_crtc_vblank_waitqueue(&crtc->base); @@ -139,8 +137,7 @@ void intel_pipe_update_start(struct intel_crtc *crtc) crtc->debug.scanline_start = scanline; crtc->debug.start_vbl_time = ktime_get(); - crtc->debug.start_vbl_count = - dev->driver->get_vblank_counter(dev, pipe); + crtc->debug.start_vbl_count = intel_crtc_get_vblank_counter(crtc); trace_i915_pipe_update_vblank_evaded(crtc); } @@ -156,10 +153,9 @@ void intel_pipe_update_start(struct intel_crtc *crtc) */ void intel_pipe_update_end(struct intel_crtc *crtc) { - struct drm_device *dev = crtc->base.dev; enum pipe pipe = crtc->pipe; int scanline_end = intel_get_crtc_scanline(crtc); - u32 end_vbl_count = dev->driver->get_vblank_counter(dev, pipe); + u32 end_vbl_count = intel_crtc_get_vblank_counter(crtc); ktime_t end_vbl_time = ktime_get(); trace_i915_pipe_update_end(crtc, end_vbl_count, scanline_end);