drm/i915: suspend/resume GEM when KMS is active
In the KMS case, we need to suspend/resume GEM as well. So on suspend, make
sure we idle GEM and stop any new rendering from coming in, and on resume,
re-init the framebuffer and clear the suspended flag.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index a31cbdb..0692622 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -27,6 +27,7 @@
*
*/
+#include <linux/device.h>
#include "drmP.h"
#include "drm.h"
#include "i915_drm.h"
@@ -66,6 +67,12 @@
i915_save_state(dev);
+ /* If KMS is active, we do the leavevt stuff here */
+ if (drm_core_check_feature(dev, DRIVER_MODESET) && i915_gem_idle(dev)) {
+ dev_err(&dev->pdev->dev, "GEM idle failed, aborting suspend\n");
+ return -EBUSY;
+ }
+
intel_opregion_free(dev);
if (state.event == PM_EVENT_SUSPEND) {
@@ -79,6 +86,9 @@
static int i915_resume(struct drm_device *dev)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int ret = 0;
+
pci_set_power_state(dev->pdev, PCI_D0);
pci_restore_state(dev->pdev);
if (pci_enable_device(dev->pdev))
@@ -89,7 +99,18 @@
intel_opregion_init(dev);
- return 0;
+ /* KMS EnterVT equivalent */
+ if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+ mutex_lock(&dev->struct_mutex);
+ dev_priv->mm.suspended = 0;
+
+ ret = i915_gem_init_ringbuffer(dev);
+ if (ret != 0)
+ ret = -1;
+ mutex_unlock(&dev->struct_mutex);
+ }
+
+ return ret;
}
static struct vm_operations_struct i915_gem_vm_ops = {