diff options
author | Ashwin Chaugule <ashwin.chaugule@linaro.org> | 2015-09-09 22:27:07 +0200 |
---|---|---|
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 | ACPI: Add weak routines for ACPI CPU Hotplug (diff) | |
download | linux-4f2f757351df44c7109a7b93653bed9b8fe10e6b.tar.xz linux-4f2f757351df44c7109a7b93653bed9b8fe10e6b.zip |
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; } |