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| author | Duncan Laurie <dlaurie@chromium.org> | 2017-03-07 19:03:50 -0800 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2017-03-08 19:07:49 +0100 |
| commit | cb76d50f0d15eada406e51a096d78553e3d4184e (patch) | |
| tree | a3ed5bb7cd23fd99fa4cdc385b8366e66f3b0990 /src/soc/intel | |
| parent | b2aac8503019aad122983c0b60635357e9087b9c (diff) | |
| download | coreboot-cb76d50f0d15eada406e51a096d78553e3d4184e.tar.xz | |
intel/skylake: Add function to read state of Deep S5
Add a function to read the current state of Deep S5 configuration
and indicate if it is enabled (for AC and/or DC) or disabled.
This is similar to the existing function that checks Deep S3
enable state.
BUG=b:36042662
BRANCH=none
TEST=tested with subsequent commits to check Deep S5 state at boot
and filter event log messages if it is enabled.
Change-Id: I4b60fb99a99952cb3ca6be29f257bb5894ff5a52
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/18663
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/skylake/include/soc/pm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/include/soc/pm.h b/src/soc/intel/skylake/include/soc/pm.h index 0045fa04e8..7112c77a24 100644 --- a/src/soc/intel/skylake/include/soc/pm.h +++ b/src/soc/intel/skylake/include/soc/pm.h @@ -198,4 +198,12 @@ static inline int deep_s3_enabled(void) return !!(deep_s3_pol & (S3DC_GATE_SUS | S3AC_GATE_SUS)); } +static inline int deep_s5_enabled(void) +{ + uint32_t deep_s5_pol; + + deep_s5_pol = read32(pmc_mmio_regs() + S5_PWRGATE_POL); + return !!(deep_s5_pol & (S5DC_GATE_SUS | S5AC_GATE_SUS)); +} + #endif |