From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Subject: [PATCH] drm/i915: make sure PC8 is enabled on suspend and disabled on resume v4 Date: Fri, 30 May 2014 11:48:26 -0700 Message-ID: <1401475706-18234-1-git-send-email-jbarnes@virtuousgeek.org> References: <1401475254-17530-1-git-send-email-jbarnes@virtuousgeek.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from gproxy3-pub.mail.unifiedlayer.com (gproxy3-pub.mail.unifiedlayer.com [69.89.30.42]) by gabe.freedesktop.org (Postfix) with SMTP id 28CC16EB2A for ; Fri, 30 May 2014 11:48:37 -0700 (PDT) In-Reply-To: <1401475254-17530-1-git-send-email-jbarnes@virtuousgeek.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org Cc: kristen@linux.intel.com List-Id: intel-gfx@lists.freedesktop.org From: Kristen Carlson Accardi This matches the runtime suspend paths and allows the system to enter the lowest power mode at freeze time. v2: move disable_pc8 call to thaw_early (Imre) move enable_pc8 to freeze_late (Imre/Jesse) v3: drop spurious hunk from _freeze now that we have freeze_late (Jesse) v4: move back to suspend_late (Imre was right) Signed-off-by: Kristen Carlson Accardi Signed-off-by: Jesse Barnes --- drivers/gpu/drm/i915/i915_drv.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index a573f5a..2583442 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -608,6 +608,9 @@ static int i915_drm_thaw_early(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + if (IS_HASWELL(dev) || IS_BROADWELL(dev)) + hsw_disable_pc8(dev_priv); + intel_uncore_early_sanitize(dev); intel_uncore_sanitize(dev); intel_power_domains_init_hw(dev_priv); @@ -891,6 +894,7 @@ static int i915_pm_suspend_late(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *drm_dev = pci_get_drvdata(pdev); + struct drm_i915_private *dev_priv = drm_dev->dev_private; /* * We have a suspedn ordering issue with the snd-hda driver also @@ -904,6 +908,9 @@ static int i915_pm_suspend_late(struct device *dev) if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; + if (IS_HASWELL(drm_dev) || IS_BROADWELL(drm_dev)) + hsw_enable_pc8(dev_priv); + pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); -- 1.9.1