diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-11-21 21:54:26 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-12-03 09:29:37 +0100 |
| commit | ca83b9361bf70d5d4171ba54a598a8c8f981f091 (patch) | |
| tree | 8c07457a65c6de2c0ca6f0f6c8f27218eb83cfc8 | |
| parent | 73bbf6bd907906dcbdc78f3af38a722c0fe498d8 (diff) | |
drm/i915: Restore the display config after a GPU reset on gen4
On pre-ctg GPU reset also resets the display hardware. Force a mode
restore after the GPU reset, and also re-init clock gating.
v2: Use intel_modeset_init_hw() instead of intel_init_clock_gating()
in case more relevant stuff gets added there at some point
Restore interrupts after the reset as well
Tested-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 1e9c136a874c..68e42392f59c 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -880,6 +880,24 @@ int i915_reset(struct drm_device *dev) */ if (INTEL_INFO(dev)->gen > 5) intel_reset_gt_powersave(dev); + + if (IS_GEN4(dev) && !IS_G4X(dev)) { + intel_runtime_pm_disable_interrupts(dev_priv); + intel_runtime_pm_enable_interrupts(dev_priv); + + intel_modeset_init_hw(dev); + + spin_lock_irq(&dev_priv->irq_lock); + if (dev_priv->display.hpd_irq_setup) + dev_priv->display.hpd_irq_setup(dev); + spin_unlock_irq(&dev_priv->irq_lock); + + drm_modeset_lock_all(dev); + intel_modeset_setup_hw_state(dev, true); + drm_modeset_unlock_all(dev); + + intel_hpd_init(dev_priv); + } } else { mutex_unlock(&dev->struct_mutex); } |