From e5747e3adcd67ae27105003ec99fb58cba180105 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 12 Jun 2014 08:35:47 -0700 Subject: [PATCH] drm/i915: send proper opregion notifications on suspend/resume This indicates to the firmware that it can power down various other components or bring them back up, depending on the target system state. Reviewed-by: Imre Deak Signed-off-by: Kristen Carlson Accardi Signed-off-by: Jesse Barnes Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 704dfe36c2ed..43b804357bcf 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -28,6 +28,7 @@ */ #include +#include #include #include #include "i915_drv.h" @@ -499,6 +500,7 @@ static int i915_drm_freeze(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; struct drm_crtc *crtc; + pci_power_t opregion_target_state; intel_runtime_pm_get(dev_priv); @@ -548,6 +550,12 @@ static int i915_drm_freeze(struct drm_device *dev) i915_save_state(dev); + if (acpi_target_system_state() >= ACPI_STATE_S3) + opregion_target_state = PCI_D3cold; + else + opregion_target_state = PCI_D1; + intel_opregion_notify_adapter(dev, opregion_target_state); + intel_uncore_forcewake_reset(dev, false); intel_opregion_fini(dev); @@ -680,6 +688,8 @@ static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings) dev_priv->modeset_restore = MODESET_DONE; mutex_unlock(&dev_priv->modeset_restore_lock); + intel_opregion_notify_adapter(dev, PCI_D0); + intel_runtime_pm_put(dev_priv); return 0; }