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authorDaniel Vetter <daniel.vetter@ffwll.ch>2012-10-17 13:32:56 +0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-10-18 00:36:51 +0400
commit905c27bb0de30dab178a54c06dc284177e24088a (patch)
tree769b3ab2aeb10056228c8f61145f0335c9712562 /drivers/gpu/drm/i915/i915_suspend.c
parentf81183f76a46c654709dc9b3a1af6fb4c7fc8a46 (diff)
downloadlinux-905c27bb0de30dab178a54c06dc284177e24088a.tar.xz
drm/i915: don't save/restore irq regs for kms
We already call drm_irq_install/uninstall at the right time, which will set up the irq registers with the correct values (through the preinstall hooks). For kms this is at best harmless, in the worst case we get an interrupt when we don't really expect it. v2: Fixup the logic, noticed by Paulo Zanoni. Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_suspend.c')
-rw-r--r--drivers/gpu/drm/i915/i915_suspend.c56
1 files changed, 30 insertions, 26 deletions
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 69b2d7f588be..6bd06b72b1dc 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -818,20 +818,22 @@ int i915_save_state(struct drm_device *dev)
i915_save_display(dev);
- /* Interrupt state */
- if (HAS_PCH_SPLIT(dev)) {
- dev_priv->saveDEIER = I915_READ(DEIER);
- dev_priv->saveDEIMR = I915_READ(DEIMR);
- dev_priv->saveGTIER = I915_READ(GTIER);
- dev_priv->saveGTIMR = I915_READ(GTIMR);
- dev_priv->saveFDI_RXA_IMR = I915_READ(_FDI_RXA_IMR);
- dev_priv->saveFDI_RXB_IMR = I915_READ(_FDI_RXB_IMR);
- dev_priv->saveMCHBAR_RENDER_STANDBY =
- I915_READ(RSTDBYCTL);
- dev_priv->savePCH_PORT_HOTPLUG = I915_READ(PCH_PORT_HOTPLUG);
- } else {
- dev_priv->saveIER = I915_READ(IER);
- dev_priv->saveIMR = I915_READ(IMR);
+ if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
+ /* Interrupt state */
+ if (HAS_PCH_SPLIT(dev)) {
+ dev_priv->saveDEIER = I915_READ(DEIER);
+ dev_priv->saveDEIMR = I915_READ(DEIMR);
+ dev_priv->saveGTIER = I915_READ(GTIER);
+ dev_priv->saveGTIMR = I915_READ(GTIMR);
+ dev_priv->saveFDI_RXA_IMR = I915_READ(_FDI_RXA_IMR);
+ dev_priv->saveFDI_RXB_IMR = I915_READ(_FDI_RXB_IMR);
+ dev_priv->saveMCHBAR_RENDER_STANDBY =
+ I915_READ(RSTDBYCTL);
+ dev_priv->savePCH_PORT_HOTPLUG = I915_READ(PCH_PORT_HOTPLUG);
+ } else {
+ dev_priv->saveIER = I915_READ(IER);
+ dev_priv->saveIMR = I915_READ(IMR);
+ }
}
intel_disable_gt_powersave(dev);
@@ -869,18 +871,20 @@ int i915_restore_state(struct drm_device *dev)
i915_restore_display(dev);
- /* Interrupt state */
- if (HAS_PCH_SPLIT(dev)) {
- I915_WRITE(DEIER, dev_priv->saveDEIER);
- I915_WRITE(DEIMR, dev_priv->saveDEIMR);
- I915_WRITE(GTIER, dev_priv->saveGTIER);
- I915_WRITE(GTIMR, dev_priv->saveGTIMR);
- I915_WRITE(_FDI_RXA_IMR, dev_priv->saveFDI_RXA_IMR);
- I915_WRITE(_FDI_RXB_IMR, dev_priv->saveFDI_RXB_IMR);
- I915_WRITE(PCH_PORT_HOTPLUG, dev_priv->savePCH_PORT_HOTPLUG);
- } else {
- I915_WRITE(IER, dev_priv->saveIER);
- I915_WRITE(IMR, dev_priv->saveIMR);
+ if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
+ /* Interrupt state */
+ if (HAS_PCH_SPLIT(dev)) {
+ I915_WRITE(DEIER, dev_priv->saveDEIER);
+ I915_WRITE(DEIMR, dev_priv->saveDEIMR);
+ I915_WRITE(GTIER, dev_priv->saveGTIER);
+ I915_WRITE(GTIMR, dev_priv->saveGTIMR);
+ I915_WRITE(_FDI_RXA_IMR, dev_priv->saveFDI_RXA_IMR);
+ I915_WRITE(_FDI_RXB_IMR, dev_priv->saveFDI_RXB_IMR);
+ I915_WRITE(PCH_PORT_HOTPLUG, dev_priv->savePCH_PORT_HOTPLUG);
+ } else {
+ I915_WRITE(IER, dev_priv->saveIER);
+ I915_WRITE(IMR, dev_priv->saveIMR);
+ }
}
/* Cache mode state */