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intel-pstate: Use #defines instead of hard-coded values.

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They are defined in coreboot (MSR_PLATFORM) and the other
one is already defined in msr-index.h.

Let's use those.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Konrad Rzeszutek Wilk 2013-03-20 14:21:10 +00:00 committed by Rafael J. Wysocki
parent e6f3eb29be
commit 05e99c8cf9
2 changed files with 4 additions and 3 deletions
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1
arch/x86/include/uapi/asm/msr-index.h
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@ -44,6 +44,7 @@
#define SNB_C1_AUTO_UNDEMOTE (1UL << 27) #define SNB_C1_AUTO_UNDEMOTE (1UL << 27)
#define SNB_C3_AUTO_UNDEMOTE (1UL << 28) #define SNB_C3_AUTO_UNDEMOTE (1UL << 28)
#define MSR_PLATFORM_INFO 0x000000ce
#define MSR_MTRRcap 0x000000fe #define MSR_MTRRcap 0x000000fe
#define MSR_IA32_BBL_CR_CTL 0x00000119 #define MSR_IA32_BBL_CR_CTL 0x00000119
#define MSR_IA32_BBL_CR_CTL3 0x0000011e #define MSR_IA32_BBL_CR_CTL3 0x0000011e

6
drivers/cpufreq/intel_pstate.c
View File

@ -358,14 +358,14 @@ static void intel_pstate_sysfs_expose_params(void)
static int intel_pstate_min_pstate(void) static int intel_pstate_min_pstate(void)
{ {
u64 value; u64 value;
rdmsrl(0xCE, value); rdmsrl(MSR_PLATFORM_INFO, value);
return (value >> 40) & 0xFF; return (value >> 40) & 0xFF;
} }
static int intel_pstate_max_pstate(void) static int intel_pstate_max_pstate(void)
{ {
u64 value; u64 value;
rdmsrl(0xCE, value); rdmsrl(MSR_PLATFORM_INFO, value);
return (value >> 8) & 0xFF; return (value >> 8) & 0xFF;
} }
@ -373,7 +373,7 @@ static int intel_pstate_turbo_pstate(void)
{ {
u64 value; u64 value;
int nont, ret; int nont, ret;
rdmsrl(0x1AD, value); rdmsrl(MSR_NHM_TURBO_RATIO_LIMIT, value);
nont = intel_pstate_max_pstate(); nont = intel_pstate_max_pstate();
ret = ((value) & 255); ret = ((value) & 255);
if (ret <= nont) if (ret <= nont)