diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_suspend.c | 8 |
3 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 881c9af0971d..8bfbbab820ef 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -817,6 +817,7 @@ struct i915_suspend_saved_registers { u32 savePIPEB_LINK_N1; u32 saveMCHBAR_RENDER_STANDBY; u32 savePCH_PORT_HOTPLUG; + u16 saveGCDGMBUS; }; struct intel_gen6_power_mgmt { diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 4e0053e64f14..4438a43cf193 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -72,6 +72,7 @@ #define I915_GC_RENDER_CLOCK_166_MHZ (0 << 0) #define I915_GC_RENDER_CLOCK_200_MHZ (1 << 0) #define I915_GC_RENDER_CLOCK_333_MHZ (4 << 0) +#define GCDGMBUS 0xcc #define LBB 0xf4 /* Graphics reset regs */ diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 70db618989c4..97f395f16f1c 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -366,6 +366,10 @@ int i915_save_state(struct drm_device *dev) intel_disable_gt_powersave(dev); + if (IS_GEN4(dev)) + pci_read_config_word(dev->pdev, GCDGMBUS, + &dev_priv->regfile.saveGCDGMBUS); + /* Cache mode state */ dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0); @@ -413,6 +417,10 @@ int i915_restore_state(struct drm_device *dev) } } + if (IS_GEN4(dev)) + pci_read_config_word(dev->pdev, GCDGMBUS, + &dev_priv->regfile.saveGCDGMBUS); + /* Cache mode state */ I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 | 0xffff0000); |