diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/apollolake/pmutil.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/pmutil.c b/src/soc/intel/apollolake/pmutil.c index 162290ac17..dbaed70ca3 100644 --- a/src/soc/intel/apollolake/pmutil.c +++ b/src/soc/intel/apollolake/pmutil.c @@ -186,6 +186,17 @@ void soc_fill_power_state(struct chipset_power_state *ps) ps->gen_pmcon1, ps->gen_pmcon2, ps->gen_pmcon3); } +/* Return 0, 3, or 5 to indicate the previous sleep state. */ +int soc_prev_sleep_state(const struct chipset_power_state *ps, + int prev_sleep_state) +{ + /* WAK_STS bit will not be set when waking from G3 state */ + + if (!(ps->pm1_sts & WAK_STS) && (ps->gen_pmcon1 & COLD_BOOT_STS)) + prev_sleep_state = ACPI_S5; + return prev_sleep_state; +} + void enable_pm_timer_emulation(void) { /* ACPI PM timer emulation */ |