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| author | Imre Deak <imre.deak@intel.com> | 2015-11-18 17:32:30 +0200 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2015-11-23 16:59:25 +0200 |
| commit | bc87229f323e6b5ee9ac57817463fb2ff65e6811 (patch) | |
| tree | 28a561a07bb9f251aa1e24e74e2012b21337027b /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 92907cbbef8625bb3998d1eb385fc88f23c97a3f (diff) | |
| download | lwn-bc87229f323e6b5ee9ac57817463fb2ff65e6811.tar.gz lwn-bc87229f323e6b5ee9ac57817463fb2ff65e6811.zip | |
drm/i915/skl: enable PC9/10 power states during suspend-to-idle
During suspend-to-idle we need to keep the DMC firmware active and DC6
enabled, since otherwise we won't reach deep system power states like
PC9/10. The lead for this came from Nivedita who noticed that the
kernel's turbostat tool didn't report any PC9/10 residency change
across an 'echo freeze > /sys/power/state'.
Reported-by: Nivedita Swaminathan <nivedita.swaminathan@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1447860750-18110-1-git-send-email-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 5a5c06b14ab2..3d8741eff7d3 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1885,6 +1885,7 @@ struct drm_i915_private { u32 chv_phy_control; u32 suspend_count; + bool suspended_to_idle; struct i915_suspend_saved_registers regfile; struct vlv_s0ix_state vlv_s0ix_state; |