From 905c27bb0de30dab178a54c06dc284177e24088a Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 17 Oct 2012 11:32:56 +0200 Subject: [PATCH] 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 Tested-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_suspend.c | 56 +++++++++++++++-------------- 1 file 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 */ -- 2.30.2