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| author | Jaroslav Kysela <perex@perex.cz> | 2010-01-08 09:11:18 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2010-01-08 09:11:18 +0100 |
| commit | a4ad68d57e4dc4138304df23d1817eb094149389 (patch) | |
| tree | ca7d8c4ce5377c4251560de06e15dd7be7063351 /arch/x86/include/asm/acpi.h | |
| parent | cd9d95a55550555da8e587ead9cbba5f98a371a3 (diff) | |
| parent | c97259df3f2e163c72f4d0685c61fb2e026dc989 (diff) | |
Merge branch 'topic/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 into devel
Diffstat (limited to 'arch/x86/include/asm/acpi.h')
| -rw-r--r-- | arch/x86/include/asm/acpi.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index 60d2b2db0bc..56f462cf22d 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -142,6 +142,32 @@ static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate) return max_cstate; } +static inline bool arch_has_acpi_pdc(void) +{ + struct cpuinfo_x86 *c = &cpu_data(0); + return (c->x86_vendor == X86_VENDOR_INTEL || + c->x86_vendor == X86_VENDOR_CENTAUR); +} + +static inline void arch_acpi_set_pdc_bits(u32 *buf) +{ + struct cpuinfo_x86 *c = &cpu_data(0); + + buf[2] |= ACPI_PDC_C_CAPABILITY_SMP; + + if (cpu_has(c, X86_FEATURE_EST)) + buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP; + + if (cpu_has(c, X86_FEATURE_ACPI)) + buf[2] |= ACPI_PDC_T_FFH; + + /* + * If mwait/monitor is unsupported, C2/C3_FFH will be disabled + */ + if (!cpu_has(c, X86_FEATURE_MWAIT)) + buf[2] &= ~(ACPI_PDC_C_C2C3_FFH); +} + #else /* !CONFIG_ACPI */ #define acpi_lapic 0 |