From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: [PATCH] drm/i915: fixup the plane->pipe fixup code Date: Thu, 6 Sep 2012 22:09:35 +0200 Message-ID: <1346962175-7356-1-git-send-email-daniel.vetter@ffwll.ch> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wi0-f177.google.com (mail-wi0-f177.google.com [209.85.212.177]) by gabe.freedesktop.org (Postfix) with ESMTP id 081EAA0D9D for ; Thu, 6 Sep 2012 14:16:57 -0700 (PDT) Received: by wibhn17 with SMTP id hn17so1546383wib.12 for ; Thu, 06 Sep 2012 14:16:57 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Intel Graphics Development Cc: Daniel Vetter List-Id: intel-gfx@lists.freedesktop.org We need to check whether the _other plane is on our pipe, not whether our plane is on the other pipe. Otherwise if not both pipes/planes are active, we won't properly clean up the mess and set up our desired plane->pipe mapping. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=51265 Tested-by: Vladyslav Shtabovenko Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index fd9c275..ce9b247 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -7994,11 +7994,27 @@ static void intel_enable_pipe_a(struct drm_device *dev) } +static bool +intel_check_plane_mapping(struct intel_crtc *crtc) +{ + struct drm_i915_private *dev_priv = crtc->base.dev->dev_private; + u32 reg, val; + + reg = DSPCNTR(!crtc->plane); + val = I915_READ(reg); + + if ((val & DISPLAY_PLANE_ENABLE) == 0 && + (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe)) + return false; + + return true; +} + static void intel_sanitize_crtc(struct intel_crtc *crtc) { struct drm_device *dev = crtc->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - u32 reg, val; + u32 reg; /* Clear any frame start delays used for debugging left by the BIOS */ reg = PIPECONF(crtc->pipe); @@ -8006,17 +8022,10 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc) /* We need to sanitize the plane -> pipe mapping first because this will * disable the crtc (and hence change the state) if it is wrong. */ - if (!HAS_PCH_SPLIT(dev)) { + if (!HAS_PCH_SPLIT(dev) && !intel_check_plane_mapping(crtc)) { struct intel_connector *connector; bool plane; - reg = DSPCNTR(crtc->plane); - val = I915_READ(reg); - - if ((val & DISPLAY_PLANE_ENABLE) == 0 && - (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe)) - goto ok; - DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n", crtc->base.base.id); @@ -8040,7 +8049,6 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc) WARN_ON(crtc->active); crtc->base.enabled = false; } -ok: if (dev_priv->quirks & QUIRK_PIPEA_FORCE && crtc->pipe == PIPE_A && !crtc->active) { -- 1.7.11.2