diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index b743bb17e288..334bcc1badaa 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -594,6 +594,8 @@ static void intel_suspend_encoders(struct drm_i915_private *dev_priv) static int intel_suspend_complete(struct drm_i915_private *dev_priv); static int vlv_resume_prepare(struct drm_i915_private *dev_priv, bool rpm_resume); +static int skl_resume_prepare(struct drm_i915_private *dev_priv); + static int i915_drm_suspend(struct drm_device *dev) { @@ -808,6 +810,8 @@ static int i915_drm_resume_early(struct drm_device *dev) if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) hsw_disable_pc8(dev_priv); + else if (IS_SKYLAKE(dev_priv)) + ret = skl_resume_prepare(dev_priv); intel_uncore_sanitize(dev); intel_power_domains_init_hw(dev_priv); @@ -1022,6 +1026,19 @@ static int i915_pm_resume(struct device *dev) return i915_drm_resume(drm_dev); } +static int skl_suspend_complete(struct drm_i915_private *dev_priv) +{ + /* Enabling DC6 is not a hard requirement to enter runtime D3 */ + + /* + * This is to ensure that CSR isn't identified as loaded before + * CSR-loading program is called during runtime-resume. + */ + intel_csr_load_status_set(dev_priv, FW_UNINITIALIZED); + + return 0; +} + static int hsw_suspend_complete(struct drm_i915_private *dev_priv) { hsw_enable_pc8(dev_priv); @@ -1061,6 +1078,15 @@ static int bxt_resume_prepare(struct drm_i915_private *dev_priv) return 0; } +static int skl_resume_prepare(struct drm_i915_private *dev_priv) +{ + struct drm_device *dev = dev_priv->dev; + + intel_csr_load_program(dev); + + return 0; +} + /* * Save all Gunit registers that may be lost after a D3 and a subsequent * S0i[R123] transition. The list of registers needing a save/restore is @@ -1536,6 +1562,8 @@ static int intel_runtime_resume(struct device *device) if (IS_BROXTON(dev)) ret = bxt_resume_prepare(dev_priv); + else if (IS_SKYLAKE(dev)) + ret = skl_resume_prepare(dev_priv); else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) hsw_disable_pc8(dev_priv); else if (IS_VALLEYVIEW(dev_priv)) @@ -1570,6 +1598,8 @@ static int intel_suspend_complete(struct drm_i915_private *dev_priv) if (IS_BROXTON(dev)) ret = bxt_suspend_complete(dev_priv); + else if (IS_SKYLAKE(dev)) + ret = skl_suspend_complete(dev_priv); else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) ret = hsw_suspend_complete(dev_priv); else if (IS_VALLEYVIEW(dev)) |