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Merge branch 'pm-cpufreq'

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* pm-cpufreq:
  cpufreq: OMAP: remove loops_per_jiffy recalculate for smp
  sections: fix section conflicts in drivers/cpufreq
  cpufreq: conservative: update frequency when limits are relaxed
  cpufreq / ondemand: update frequency when limits are relaxed
  cpufreq: Add a generic cpufreq-cpu0 driver
  PM / OPP: Initialize OPP table from device tree
  ARM: add cpufreq transiton notifier to adjust loops_per_jiffy for smp
  cpufreq: Remove support for hardware P-state chips from powernow-k8
  acpi-cpufreq: Add compatibility for legacy AMD cpb sysfs knob
  acpi-cpufreq: Add support for disabling dynamic overclocking
  ACPI: Add fixups for AMD P-state figures
  powernow-k8: delay info messages until initialization has succeeded
  cpufreq: Add warning message to powernow-k8
  acpi-cpufreq: Add quirk to disable _PSD usage on all AMD CPUs
  acpi-cpufreq: Add support for modern AMD CPUs
  cpufreq / powernow-k8: Fixup missing _PSS objects message
  PM / cpufreq: Initialise the cpu field during conservative governor start
This commit is contained in:
Rafael J. Wysocki 2012-09-17 20:26:02 +02:00
commit fa373abbbd
20 changed files with 947 additions and 455 deletions
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30
drivers/acpi/processor_perflib.c
View file

@ -324,6 +324,34 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)
return result;
}
#ifdef CONFIG_X86
/*
* Some AMDs have 50MHz frequency multiples, but only provide 100MHz rounding
* in their ACPI data. Calculate the real values and fix up the _PSS data.
*/
static void amd_fixup_frequency(struct acpi_processor_px *px, int i)
{
u32 hi, lo, fid, did;
int index = px->control & 0x00000007;
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
return;
if ((boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model < 10)
|| boot_cpu_data.x86 == 0x11) {
rdmsr(MSR_AMD_PSTATE_DEF_BASE + index, lo, hi);
fid = lo & 0x3f;
did = (lo >> 6) & 7;
if (boot_cpu_data.x86 == 0x10)
px->core_frequency = (100 * (fid + 0x10)) >> did;
else
px->core_frequency = (100 * (fid + 8)) >> did;
}
}
#else
static void amd_fixup_frequency(struct acpi_processor_px *px, int i) {};
#endif
static int acpi_processor_get_performance_states(struct acpi_processor *pr)
{
int result = 0;
@ -379,6 +407,8 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
goto end;
}
amd_fixup_frequency(px, i);
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"State [%d]: core_frequency[%d] power[%d] transition_latency[%d] bus_master_latency[%d] control[0x%x] status[0x%x]\n",
i,