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| author | Patrik Jakobsson | 2015-11-16 15:01:06 +0100 |
|---|---|---|
| committer | Imre Deak | 2015-11-17 19:55:20 +0100 |
| commit | 443646c7ee2749ae4b09f05dfe643d95c43f960f (patch) | |
| tree | 0122dc30b75eed5fec0f59246d33e1c716598dcb /drivers/gpu/drm/i915/intel_runtime_pm.c | |
| parent | drm/i915/gen9: Turn DC handling into a power well (diff) | |
| download | kernel-qcow2-linux-443646c7ee2749ae4b09f05dfe643d95c43f960f.tar.gz kernel-qcow2-linux-443646c7ee2749ae4b09f05dfe643d95c43f960f.tar.xz kernel-qcow2-linux-443646c7ee2749ae4b09f05dfe643d95c43f960f.zip | |
drm/i915/gen9: Add boot parameter for disabling DC6
v2: Use _unsafe (Jani)
v3: Allow specifying specific DC-states instead of just DC6 (Imre)
Signed-off-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447682467-6237-3-git-send-email-patrik.jakobsson@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_runtime_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_runtime_pm.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index ad87adcca5c4..f8167753f91b 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -417,6 +417,11 @@ static void gen9_set_dc_state(struct drm_i915_private *dev_priv, uint32_t state) WARN_ON_ONCE(state & ~mask); + if (i915.enable_dc == 0) + state = DC_STATE_DISABLE; + else if (i915.enable_dc == 1 && state > DC_STATE_EN_UPTO_DC5) + state = DC_STATE_EN_UPTO_DC5; + if (state & DC_STATE_EN_UPTO_DC5_DC6_MASK) gen9_set_dc_state_debugmask_memory_up(dev_priv); @@ -525,7 +530,9 @@ static void assert_can_disable_dc6(struct drm_i915_private *dev_priv) static void gen9_disable_dc5_dc6(struct drm_i915_private *dev_priv) { assert_can_disable_dc5(dev_priv); - assert_can_disable_dc6(dev_priv); + + if (IS_SKYLAKE(dev_priv) && i915.enable_dc != 0 && i915.enable_dc != 1) + assert_can_disable_dc6(dev_priv); gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); } @@ -712,7 +719,7 @@ static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv, static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv, struct i915_power_well *power_well) { - if (IS_SKYLAKE(dev_priv)) + if (IS_SKYLAKE(dev_priv) && i915.enable_dc != 0 && i915.enable_dc != 1) skl_enable_dc6(dev_priv); else gen9_enable_dc5(dev_priv); @@ -724,7 +731,8 @@ static void gen9_dc_off_power_well_sync_hw(struct drm_i915_private *dev_priv, if (power_well->count > 0) { gen9_set_dc_state(dev_priv, DC_STATE_DISABLE); } else { - if (IS_SKYLAKE(dev_priv)) + if (IS_SKYLAKE(dev_priv) && i915.enable_dc != 0 && + i915.enable_dc != 1) gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6); else gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5); |