drm/i915: enable VT switchless resume v3
With the other bits in place, we can do this safely.
v2: disable backlight on suspend to prevent premature enablement on resume
v3: disable CRTCs on suspend to allow RTD3 (Kristen)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6c4b13c..bf57e1c 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -458,6 +458,7 @@
static int i915_drm_freeze(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
/* ignore lid events during suspend */
mutex_lock(&dev_priv->modeset_restore_lock);
@@ -481,10 +482,14 @@
cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work);
- intel_modeset_disable(dev);
-
drm_irq_uninstall(dev);
dev_priv->enable_hotplug_processing = false;
+ /*
+ * Disable CRTCs directly since we want to preserve sw state
+ * for _thaw.
+ */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+ dev_priv->display.crtc_disable(crtc);
}
i915_save_state(dev);
@@ -562,7 +567,10 @@
drm_irq_install(dev);
intel_modeset_init_hw(dev);
- intel_modeset_setup_hw_state(dev, false);
+
+ drm_modeset_lock_all(dev);
+ intel_modeset_setup_hw_state(dev, true);
+ drm_modeset_unlock_all(dev);
/*
* ... but also need to make sure that hotplug processing