drm/switcheroo: track state of switch in drivers.
We need to track the state of the switch in drivers, so that after s/r
we don't resume the card we've explicitly switched off before. Also
don't allow a userspace open to occur if we've switched the gpu off.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index ec1f650..0568dbd 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1151,12 +1151,16 @@
pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
if (state == VGA_SWITCHEROO_ON) {
printk(KERN_INFO "i915: switched on\n");
+ dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
/* i915 resume handler doesn't set to D0 */
pci_set_power_state(dev->pdev, PCI_D0);
i915_resume(dev);
+ dev->switch_power_state = DRM_SWITCH_POWER_ON;
} else {
printk(KERN_ERR "i915: switched off\n");
+ dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
i915_suspend(dev, pmm);
+ dev->switch_power_state = DRM_SWITCH_POWER_OFF;
}
}
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 9eee6cf..8724933 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -271,6 +271,8 @@
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ drm_kms_helper_poll_disable(dev);
+
pci_save_state(dev->pdev);
/* If KMS is active, we do the leavevt stuff here */
@@ -307,7 +309,9 @@
if (state.event == PM_EVENT_PRETHAW)
return 0;
- drm_kms_helper_poll_disable(dev);
+
+ if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
+ return 0;
error = i915_drm_freeze(dev);
if (error)
@@ -361,6 +365,9 @@
{
int ret;
+ if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
+ return 0;
+
if (pci_enable_device(dev->pdev))
return -EIO;
@@ -569,6 +576,9 @@
return -ENODEV;
}
+ if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
+ return 0;
+
error = i915_drm_freeze(drm_dev);
if (error)
return error;