From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: [PATCH 73/81] drm/i915: rip out intel_disable_pch_ports Date: Wed, 11 Jul 2012 16:28:56 +0200 Message-ID: <1342016944-23395-74-git-send-email-daniel.vetter@ffwll.ch> References: <1342016944-23395-1-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-wg0-f43.google.com (mail-wg0-f43.google.com [74.125.82.43]) by gabe.freedesktop.org (Postfix) with ESMTP id C00839E94F for ; Wed, 11 Jul 2012 08:36:50 -0700 (PDT) Received: by mail-wg0-f43.google.com with SMTP id dr1so946426wgb.12 for ; Wed, 11 Jul 2012 08:36:50 -0700 (PDT) In-Reply-To: <1342016944-23395-1-git-send-email-daniel.vetter@ffwll.ch> 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 Even with the old crtc helper code we should have disabled all encoders on that pipe by now, and with the new code this would definitely paper over a bug. We already have the necessary checks in place in intel_disable_transcoder, so if we accidentally leave a pch port on, this will be caught. Hence just rip this all out. Note that up to the patch in this giant modeset series that removes the LVDS special case to avoid disabling LVDS in the encoder->prepare callback ("drm/i915/lvds: ditch ->prepare special case"), this was not the case for all outputs. Also note that in commit 1b3c7a47f993bf9ab6c4c7cc3bbf5588052b58f4 Author: Zhenyu Wang Date: Wed Nov 25 13:09:38 2009 +0800 drm/i915: Fix LVDS stability issue on Ironlake this was already discovered independently and worked around. How I bloody hate this entire mess of cludges piled on top of other cludges. Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 60 ---------------------------------- 1 files changed, 0 insertions(+), 60 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 36bdac1..38a73bf 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1857,59 +1857,6 @@ static void intel_disable_plane(struct drm_i915_private *dev_priv, intel_wait_for_vblank(dev_priv->dev, pipe); } -static void disable_pch_dp(struct drm_i915_private *dev_priv, - enum pipe pipe, int reg, u32 port_sel) -{ - u32 val = I915_READ(reg); - if (dp_pipe_enabled(dev_priv, pipe, port_sel, val)) { - DRM_DEBUG_KMS("Disabling pch dp %x on pipe %d\n", reg, pipe); - I915_WRITE(reg, val & ~DP_PORT_EN); - } -} - -static void disable_pch_hdmi(struct drm_i915_private *dev_priv, - enum pipe pipe, int reg) -{ - u32 val = I915_READ(reg); - if (hdmi_pipe_enabled(dev_priv, val, pipe)) { - DRM_DEBUG_KMS("Disabling pch HDMI %x on pipe %d\n", - reg, pipe); - I915_WRITE(reg, val & ~PORT_ENABLE); - } -} - -/* Disable any ports connected to this transcoder */ -static void intel_disable_pch_ports(struct drm_i915_private *dev_priv, - enum pipe pipe) -{ - u32 reg, val; - - val = I915_READ(PCH_PP_CONTROL); - I915_WRITE(PCH_PP_CONTROL, val | PANEL_UNLOCK_REGS); - - disable_pch_dp(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B); - disable_pch_dp(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C); - disable_pch_dp(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D); - - reg = PCH_ADPA; - val = I915_READ(reg); - if (adpa_pipe_enabled(dev_priv, val, pipe)) - I915_WRITE(reg, val & ~ADPA_DAC_ENABLE); - - reg = PCH_LVDS; - val = I915_READ(reg); - if (lvds_pipe_enabled(dev_priv, val, pipe)) { - DRM_DEBUG_KMS("disable lvds on pipe %d val 0x%08x\n", pipe, val); - I915_WRITE(reg, val & ~LVDS_PORT_EN); - POSTING_READ(reg); - udelay(100); - } - - disable_pch_hdmi(dev_priv, pipe, HDMIB); - disable_pch_hdmi(dev_priv, pipe, HDMIC); - disable_pch_hdmi(dev_priv, pipe, HDMID); -} - int intel_pin_and_fence_fb_obj(struct drm_device *dev, struct drm_i915_gem_object *obj, @@ -3308,13 +3255,6 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) ironlake_fdi_disable(crtc); - /* This is a horrible layering violation; we should be doing this in - * the connector/encoder ->prepare instead, but we don't always have - * enough information there about the config to know whether it will - * actually be necessary or just cause undesired flicker. - */ - intel_disable_pch_ports(dev_priv, pipe); - intel_disable_transcoder(dev_priv, pipe); if (HAS_PCH_CPT(dev)) { -- 1.7.7.6