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| author | Ashwin Chaugule <ashwin.chaugule@linaro.org> | 2015-09-09 16:27:07 -0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-12 23:08:04 +0200 |
| commit | 4f2f757351df44c7109a7b93653bed9b8fe10e6b (patch) | |
| tree | 53e27f99f467e0cdeb8502a3542d19de230cd9ce /drivers/acpi/processor_driver.c | |
| parent | 56cdc2a05c248c9dfe2480813fc34a4e6d7a77db (diff) | |
CPPC: Probe for CPPC tables for each ACPI Processor object
For each detected ACPI Processor object (ACPI0007), search its
device handle for CPPC specific tables (i.e. _CPC) and extract
CPU specific performance capabilities.
Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Reviewed-by: Al Stone <al.stone@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/processor_driver.c')
| -rw-r--r-- | drivers/acpi/processor_driver.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 51e658f21e95..f4e02ae93f58 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -242,6 +242,10 @@ static int __acpi_processor_start(struct acpi_device *device) if (pr->flags.need_hotplug_init) return 0; + result = acpi_cppc_processor_probe(pr); + if (result) + return -ENODEV; + if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver) acpi_processor_power_init(pr); @@ -287,6 +291,8 @@ static int acpi_processor_stop(struct device *dev) acpi_pss_perf_exit(pr, device); + acpi_cppc_processor_exit(pr); + return 0; } |