ACPI / CPPC: set a non-zero value for transition_latency

Compute the expected transition latency for frequency transitions
using the values from the PCCT tables when the desired perf
register is in PCC.

Signed-off-by: Prashanth Prakash <[email protected]>
Reviewed-by: Alexey Klimov <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Prakash, Prashanth 2016-08-16 14:39:41 -06:00 • committed by Rafael J. Wysocki
commit be8b88d7d9
3 changed files with 46 additions and 2 deletions

View file

@ -131,5 +131,6 @@ extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs);
extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls);
extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps);
extern int acpi_get_psd_map(struct cpudata **);
extern unsigned int cppc_get_transition_latency(int cpu);
#endif /* _CPPC_ACPI_H*/