diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2021-08-20 05:40:05 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2021-09-09 17:33:20 +0300 |
| commit | 5950fc44a57ace59f21dccfd792250019348a182 (patch) | |
| tree | 61706d4b98778f40bbb345ffa7b7ca01b0d83857 /drivers/thermal | |
| parent | 0284b52e85341e3cd4b70c8b2423fd23b8a003a8 (diff) | |
| download | linux-5950fc44a57ace59f21dccfd792250019348a182.tar.xz | |
thermal/drivers/intel: Allow processing of HWP interrupt
Add a weak function to process HWP (Hardware P-states) notifications and
move updating HWP_STATUS MSR to this function.
This allows HWP interrupts to be processed by the intel_pstate driver in
HWP mode by overriding the implementation.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210820024006.2347720-1-srinivas.pandruvada@linux.intel.com
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/intel/therm_throt.c | 7 | ||||
| -rw-r--r-- | drivers/thermal/intel/thermal_interrupt.h | 3 |
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/thermal/intel/therm_throt.c b/drivers/thermal/intel/therm_throt.c index 99abdc03c44c..dab7e8fb1059 100644 --- a/drivers/thermal/intel/therm_throt.c +++ b/drivers/thermal/intel/therm_throt.c @@ -569,13 +569,18 @@ static void notify_thresholds(__u64 msr_val) platform_thermal_notify(msr_val); } +void __weak notify_hwp_interrupt(void) +{ + wrmsrl_safe(MSR_HWP_STATUS, 0); +} + /* Thermal transition interrupt handler */ void intel_thermal_interrupt(void) { __u64 msr_val; if (static_cpu_has(X86_FEATURE_HWP)) - wrmsrl_safe(MSR_HWP_STATUS, 0); + notify_hwp_interrupt(); rdmsrl(MSR_IA32_THERM_STATUS, msr_val); diff --git a/drivers/thermal/intel/thermal_interrupt.h b/drivers/thermal/intel/thermal_interrupt.h index 53f427bb58dc..01e7bed2ffc7 100644 --- a/drivers/thermal/intel/thermal_interrupt.h +++ b/drivers/thermal/intel/thermal_interrupt.h @@ -12,4 +12,7 @@ extern int (*platform_thermal_notify)(__u64 msr_val); * callback has rate control */ extern bool (*platform_thermal_package_rate_control)(void); +/* Handle HWP interrupt */ +extern void notify_hwp_interrupt(void); + #endif /* _INTEL_THERMAL_INTERRUPT_H */ |