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fbbcdc0744
linux/drivers/cpufreq
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Adrian Huang fbbcdc0744 intel_pstate: skip the driver if ACPI has power mgmt option 
Do not load the Intel pstate driver if the platform firmware
(ACPI BIOS) supports the power management alternatives.
The ACPI BIOS indicates that the OS control mode can be used
if the _PSS (Performance Supported States) is defined in ACPI
table. For the OS control mode, the Intel pstate driver will be
loaded.

HP BIOS has several power management modes (firmware, OS-control and
so on). For the OS control mode in HP BIOS, the Intel p-state driver
will be loaded. When the customer chooses the firmware power
management in HP BIOS, the Intel p-state driver will be ignored.

I put hw_vendor_info vendor_info in case other vendors (Dell, Lenovo...)
have their firmware power management. Vendors should make sure their
firmware power management works properly, and they can go for adding
their vendor info to the variable.

I have verified the patch on HP ProLiant servers.  The patch worked
correctly.

Signed-off-by: Adrian Huang <adrianhuang0701@gmail.com>
[rjw: Fixed up !CONFIG_ACPI build]
[Linda Knippers: As Adrian has recently left HP, I retested the
updated patch on an HP ProLiant server and verified that it is
behaving correctly.  When the BIOS is configured for OS control for
power management, the intel_pstate driver loads as expected.  When
the BIOS is configured to provide the power management, the
intel_pstate driver does not load and we get the pcc_cpufreq driver
instead.]
Signed-off-by: Linda Knippers <linda.knippers@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-11-07 02:05:48 +01:00
..
acpi-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
amd_freq_sensitivity.c cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor 2013-04-10 13:19:26 +02:00
arm_big_little_dt.c PM / OPP: rename header to linux/pm_opp.h 2013-10-25 22:33:23 +02:00
arm_big_little.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
arm_big_little.h cpufreq: arm_big_little: add in-kernel switching (IKS) support 2013-10-31 00:10:53 +01:00
at32ap-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
blackfin-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
cpufreq_conservative.c cpufreq: governors: Remove duplicate check of target freq in supported range 2013-08-28 22:03:02 +02:00
cpufreq_governor.c cpufreq: Don't use smp_processor_id() in preemptible context 2013-08-29 22:19:23 +02:00
cpufreq_governor.h cpufreq: use cpufreq_driver->flags to mark CPUFREQ_HAVE_GOVERNOR_PER_POLICY 2013-10-16 00:50:23 +02:00
cpufreq_ondemand.c cpufreq: ondemand: Remove redundant return statement 2013-11-01 00:44:34 +01:00
cpufreq_performance.c cpufreq: Clean up header files included in the core 2013-08-07 23:34:09 +02:00
cpufreq_powersave.c cpufreq: Clean up header files included in the core 2013-08-07 23:34:09 +02:00
cpufreq_stats.c cpufreq: Fix wrong time unit conversion 2013-09-10 02:49:46 +02:00
cpufreq_userspace.c cpufreq / governor: Remove fossil comment 2013-10-17 23:00:20 +02:00
cpufreq-cpu0.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
cpufreq-nforce2.c cpufreq: nforce2: don't initialize part of policy set by core 2013-10-16 00:50:29 +02:00
cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
cris-artpec3-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
cris-etraxfs-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
davinci-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
dbx500-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
e_powersaver.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
elanfreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
exynos4x12-cpufreq.c cpufreq: exynos4x12: Use the common clock framework to set APLL clock rate 2013-10-17 13:52:48 +02:00
exynos4210-cpufreq.c cpufreq: exynos4210: Use the common clock framework to set APLL clock rate 2013-10-17 13:52:49 +02:00
exynos5250-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos5440-cpufreq.c cpufreq: distinguish drivers that do asynchronous notifications 2013-10-31 00:11:08 +01:00
exynos-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
exynos-cpufreq.h cpufreq: fix EXYNOS drivers selection 2013-08-12 12:00:21 +05:30
freq_table.c cpufreq: define generic .attr, .exit() and .verify() routines 2013-10-16 00:50:23 +02:00
gx-suspmod.c cpufreq: gx: don't initialize part of policy set by core 2013-10-16 00:50:30 +02:00
highbank-cpufreq.c cpufreq: highbank-cpufreq: Enable Midway/ECX-2000 2013-10-17 00:53:08 +02:00
ia64-acpi-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
imx6q-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
integrator-cpufreq.c cpufreq: integrator: don't initialize part of policy set by core 2013-10-16 00:50:30 +02:00
intel_pstate.c intel_pstate: skip the driver if ACPI has power mgmt option 2013-11-07 02:05:48 +01:00
Kconfig cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
Kconfig.arm cpufreq: arm_big_little: add vexpress SPC interface driver 2013-10-30 00:48:26 +01:00
Kconfig.powerpc cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
Kconfig.x86 cpufreq: remove CONFIG_CPU_FREQ_TABLE 2013-10-16 00:50:33 +02:00
kirkwood-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
longhaul.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
longhaul.h cpufreq: delete __cpuinit usage from all cpufreq files 2013-07-14 19:36:57 -04:00
longrun.c cpufreq: add new routine cpufreq_verify_within_cpu_limits() 2013-10-16 00:50:23 +02:00
loongson2_cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
Makefile cpufreq: arm_big_little: add vexpress SPC interface driver 2013-10-30 00:48:26 +01:00
maple-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
omap-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
p4-clockmod.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
pasemi-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
pcc-cpufreq.c cpufreq: pcc: don't initialize part of policy set by core 2013-10-16 00:50:31 +02:00
pmac32-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
pmac64-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
powernow-k6.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
powernow-k7.c cpufreq: Implement light weight ->target_index() routine 2013-10-25 22:42:24 +02:00
powernow-k7.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
powernow-k8.c cpufreq: distinguish drivers that do asynchronous notifications 2013-10-31 00:11:08 +01:00
powernow-k8.h cpufreq: Remove support for hardware P-state chips from powernow-k8 2012-09-09 22:05:30 +02:00
ppc_cbe_cpufreq_pervasive.c cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq_pmi.c cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
ppc_cbe_cpufreq.h cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc-corenet-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
pxa2xx-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
pxa3xx-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
s3c24xx-cpufreq-debugfs.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s3c24xx-cpufreq.c cpufreq: s3c: use cpufreq_generic_init() 2013-10-16 00:50:35 +02:00
s3c64xx-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
s3c2410-cpufreq.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s3c2412-cpufreq.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s3c2416-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
s3c2440-cpufreq.c cpufreq: s3c24xx: move cpufreq driver to drivers/cpufreq 2013-05-20 23:04:28 +09:00
s5pv210-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
sa1100-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
sa1110-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
sc520_freq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
sh-cpufreq.c cpufreq: sh: don't initialize part of policy set by core 2013-10-16 00:50:32 +02:00
sparc-us2e-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
sparc-us3-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
spear-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
speedstep-centrino.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
speedstep-ich.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
speedstep-lib.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
speedstep-lib.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-smi.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
tegra-cpufreq.c cpufreq: move freq change notifications to cpufreq core 2013-10-31 00:11:08 +01:00
unicore2-cpufreq.c cpufreq: unicore2: don't initialize part of policy set by core 2013-10-16 00:50:32 +02:00
vexpress-spc-cpufreq.c cpufreq: arm_big_little: add vexpress SPC interface driver 2013-10-30 00:48:26 +01:00