Merge tag 'drm-vc4-fixes-2015-01-19' of http://github.com/anholt/linux into drm-fixes

This pull request just includes the !CONFIG_PM_SLEEP build fix for
vc4.

* tag 'drm-vc4-fixes-2015-01-19' of http://github.com/anholt/linux:
  drm/vc4: Remove broken attempt at GPU reset using genpd.

diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c
index 424d515..314ff71 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_v3d.c
+++ b/drivers/gpu/drm/vc4/vc4_v3d.c
@@ -144,19 +144,16 @@ int vc4_v3d_debugfs_ident(struct seq_file *m, void *unused)
 }
 #endif /* CONFIG_DEBUG_FS */
 
-/*
- * Asks the firmware to turn on power to the V3D engine.
- *
- * This may be doable with just the clocks interface, though this
- * packet does some other register setup from the firmware, too.
- */
 int
 vc4_v3d_set_power(struct vc4_dev *vc4, bool on)
 {
-       if (on)
-               return pm_generic_poweroff(&vc4->v3d->pdev->dev);
-       else
-               return pm_generic_resume(&vc4->v3d->pdev->dev);
+       /* XXX: This interface is needed for GPU reset, and the way to
+        * do it is to turn our power domain off and back on.  We
+        * can't just reset from within the driver, because the reset
+        * bits are in the power domain's register area, and get set
+        * during the poweron process.
+        */
+       return 0;
 }
 
 static void vc4_v3d_init_hw(struct drm_device *dev)