diff options
Diffstat (limited to 'drivers/thermal/intel/intel_hfi.c')
| -rw-r--r-- | drivers/thermal/intel/intel_hfi.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/thermal/intel/intel_hfi.c b/drivers/thermal/intel/intel_hfi.c index 22445403b520..3b04c6ec4fca 100644 --- a/drivers/thermal/intel/intel_hfi.c +++ b/drivers/thermal/intel/intel_hfi.c @@ -35,7 +35,9 @@ #include <linux/processor.h> #include <linux/slab.h> #include <linux/spinlock.h> +#include <linux/suspend.h> #include <linux/string.h> +#include <linux/syscore_ops.h> #include <linux/topology.h> #include <linux/workqueue.h> @@ -571,6 +573,30 @@ static __init int hfi_parse_features(void) return 0; } +static void hfi_do_enable(void) +{ + /* This code runs only on the boot CPU. */ + struct hfi_cpu_info *info = &per_cpu(hfi_cpu_info, 0); + struct hfi_instance *hfi_instance = info->hfi_instance; + + /* No locking needed. There is no concurrency with CPU online. */ + hfi_set_hw_table(hfi_instance); + hfi_enable(); +} + +static int hfi_do_disable(void) +{ + /* No locking needed. There is no concurrency with CPU offline. */ + hfi_disable(); + + return 0; +} + +static struct syscore_ops hfi_pm_ops = { + .resume = hfi_do_enable, + .suspend = hfi_do_disable, +}; + void __init intel_hfi_init(void) { struct hfi_instance *hfi_instance; @@ -602,6 +628,8 @@ void __init intel_hfi_init(void) if (!hfi_updates_wq) goto err_nomem; + register_syscore_ops(&hfi_pm_ops); + return; err_nomem: |