Merge branch 'linus' into x86/irqstats

[pandora-kernel.git] / arch / x86 / kernel / cpu / cpufreq / Kconfig

diff --git a/arch/x86/kernel/cpu/cpufreq/Kconfig b/arch/x86/kernel/cpu/cpufreq/Kconfig
index d8c6f13..cb7a571 100644 (file)
--- a/arch/x86/kernel/cpu/cpufreq/Kconfig
+++ b/arch/x86/kernel/cpu/cpufreq/Kconfig
@@ -19,6 +19,9 @@ config X86_ACPI_CPUFREQ
          Processor Performance States.
          This driver also supports Intel Enhanced Speedstep.
 
+         To compile this driver as a module, choose M here: the
+         module will be called acpi-cpufreq.
+
          For details, take a look at <file:Documentation/cpu-freq/>.
 
          If in doubt, say N.
@@ -54,6 +57,7 @@ config SC520_CPUFREQ
 config X86_POWERNOW_K6
        tristate "AMD Mobile K6-2/K6-3 PowerNow!"
        select CPU_FREQ_TABLE
+       depends on X86_32
        help
          This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
          AMD K6-3+ processors.
@@ -65,6 +69,7 @@ config X86_POWERNOW_K6
 config X86_POWERNOW_K7
        tristate "AMD Mobile Athlon/Duron PowerNow!"
        select CPU_FREQ_TABLE
+       depends on X86_32
        help
          This adds the CPUFreq driver for mobile AMD K7 mobile processors.
 
@@ -76,23 +81,27 @@ config X86_POWERNOW_K7_ACPI
        bool
        depends on X86_POWERNOW_K7 && ACPI_PROCESSOR
        depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m)
+       depends on X86_32
        default y
 
 config X86_POWERNOW_K8
        tristate "AMD Opteron/Athlon64 PowerNow!"
        select CPU_FREQ_TABLE
-       depends on EXPERIMENTAL
        help
          This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.
 
+         To compile this driver as a module, choose M here: the
+         module will be called powernow-k8.
+
          For details, take a look at <file:Documentation/cpu-freq/>.
 
          If in doubt, say N.
 
 config X86_POWERNOW_K8_ACPI
-       bool "ACPI Support"
-       select ACPI_PROCESSOR
-       depends on ACPI && X86_POWERNOW_K8
+       bool
+       prompt "ACPI Support" if X86_32
+       depends on ACPI && X86_POWERNOW_K8 && ACPI_PROCESSOR
+       depends on !(X86_POWERNOW_K8 = y && ACPI_PROCESSOR = m)
        default y
        help
          This provides access to the K8s Processor Performance States via ACPI.
@@ -104,7 +113,7 @@ config X86_POWERNOW_K8_ACPI
 
 config X86_GX_SUSPMOD
        tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
-       depends on PCI
+       depends on X86_32 && PCI
        help
         This add the CPUFreq driver for NatSemi Geode processors which
         support suspend modulation.
@@ -114,15 +123,20 @@ config X86_GX_SUSPMOD
         If in doubt, say N.
 
 config X86_SPEEDSTEP_CENTRINO
-       tristate "Intel Enhanced SpeedStep"
+       tristate "Intel Enhanced SpeedStep (deprecated)"
        select CPU_FREQ_TABLE
-       select X86_SPEEDSTEP_CENTRINO_TABLE
+       select X86_SPEEDSTEP_CENTRINO_TABLE if X86_32
+       depends on X86_32 || (X86_64 && ACPI_PROCESSOR)
        help
+         This is deprecated and this functionality is now merged into
+         acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
+         speedstep_centrino.
          This adds the CPUFreq driver for Enhanced SpeedStep enabled
-         mobile CPUs.  This means Intel Pentium M (Centrino) CPUs. However,
-         you also need to say Y to "Use ACPI tables to decode..." below
-         [which might imply enabling ACPI] if you want to use this driver
-         on non-Banias CPUs.
+         mobile CPUs.  This means Intel Pentium M (Centrino) CPUs
+         or 64bit enabled Intel Xeons.
+
+         To compile this driver as a module, choose M here: the
+         module will be called speedstep-centrino.
 
          For details, take a look at <file:Documentation/cpu-freq/>.
 
@@ -130,7 +144,7 @@ config X86_SPEEDSTEP_CENTRINO
 
 config X86_SPEEDSTEP_CENTRINO_TABLE
        bool "Built-in tables for Banias CPUs"
-       depends on X86_SPEEDSTEP_CENTRINO
+       depends on X86_32 && X86_SPEEDSTEP_CENTRINO
        default y
        help
          Use built-in tables for Banias CPUs if ACPI encoding
@@ -141,6 +155,7 @@ config X86_SPEEDSTEP_CENTRINO_TABLE
 config X86_SPEEDSTEP_ICH
        tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
        select CPU_FREQ_TABLE
+       depends on X86_32
        help
          This adds the CPUFreq driver for certain mobile Intel Pentium III
          (Coppermine), all mobile Intel Pentium III-M (Tualatin) and all
@@ -154,7 +169,7 @@ config X86_SPEEDSTEP_ICH
 config X86_SPEEDSTEP_SMI
        tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
        select CPU_FREQ_TABLE
-       depends on EXPERIMENTAL
+       depends on X86_32 && EXPERIMENTAL
        help
          This adds the CPUFreq driver for certain mobile Intel Pentium III
          (Coppermine), all mobile Intel Pentium III-M (Tualatin)
@@ -169,15 +184,24 @@ config X86_P4_CLOCKMOD
        select CPU_FREQ_TABLE
        help
          This adds the CPUFreq driver for Intel Pentium 4 / XEON
-         processors.
+         processors.  When enabled it will lower CPU temperature by skipping
+         clocks.
+
+         This driver should be only used in exceptional
+         circumstances when very low power is needed because it causes severe
+         slowdowns and noticeable latencies.  Normally Speedstep should be used
+         instead.
+
+         To compile this driver as a module, choose M here: the
+         module will be called p4-clockmod.
 
          For details, take a look at <file:Documentation/cpu-freq/>.
 
-         If in doubt, say N.
+         Unless you are absolutely sure say N.
 
 config X86_CPUFREQ_NFORCE2
        tristate "nVidia nForce2 FSB changing"
-       depends on EXPERIMENTAL
+       depends on X86_32 && EXPERIMENTAL
        help
          This adds the CPUFreq driver for FSB changing on nVidia nForce2
          platforms.
@@ -188,6 +212,7 @@ config X86_CPUFREQ_NFORCE2
 
 config X86_LONGRUN
        tristate "Transmeta LongRun"
+       depends on X86_32
        help
          This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors
          which support LongRun.
@@ -199,7 +224,7 @@ config X86_LONGRUN
 config X86_LONGHAUL
        tristate "VIA Cyrix III Longhaul"
        select CPU_FREQ_TABLE
-       depends on ACPI_PROCESSOR
+       depends on X86_32 && ACPI_PROCESSOR
        help
          This adds the CPUFreq driver for VIA Samuel/CyrixIII,
          VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
@@ -212,7 +237,7 @@ config X86_LONGHAUL
 config X86_E_POWERSAVER
        tristate "VIA C7 Enhanced PowerSaver (EXPERIMENTAL)"
        select CPU_FREQ_TABLE
-       depends on EXPERIMENTAL
+       depends on X86_32 && EXPERIMENTAL
        help
          This adds the CPUFreq driver for VIA C7 processors.
 
@@ -233,11 +258,11 @@ config X86_ACPI_CPUFREQ_PROC_INTF
 
 config X86_SPEEDSTEP_LIB
        tristate
-       default X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD
+       default (X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD)
 
 config X86_SPEEDSTEP_RELAXED_CAP_CHECK
        bool "Relaxed speedstep capability checks"
-       depends on (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH)
+       depends on X86_32 && (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH)
        help
          Don't perform all checks for a speedstep capable system which would
          normally be done. Some ancient or strange systems, though speedstep