diff options
Diffstat (limited to 'power/baytrail.c')
| -rw-r--r-- | power/baytrail.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/power/baytrail.c b/power/baytrail.c index 9ca1633a2f..3f7f217f24 100644 --- a/power/baytrail.c +++ b/power/baytrail.c @@ -113,6 +113,9 @@ enum x86_state x86_chipset_init(void) */ if (system_jumped_to_this_image()) { if ((x86_get_signals() & IN_ALL_S0) == IN_ALL_S0) { + /* Disable idle task deep sleep when in S0. */ + disable_sleep(SLEEP_MASK_AP_RUN); + CPRINTF("[%T x86 already in S0]\n"); return X86_S0; } else { @@ -266,6 +269,12 @@ enum x86_state x86_handle_state(enum x86_state state) /* Call hooks now that rails are up */ hook_notify(HOOK_CHIPSET_RESUME); + /* + * Disable idle task deep sleep. This means that the low + * power idle task will not go into deep sleep while in S0. + */ + disable_sleep(SLEEP_MASK_AP_RUN); + /* Wait 100ms after all voltages good */ msleep(100); @@ -298,6 +307,12 @@ enum x86_state x86_handle_state(enum x86_state state) wireless_enable(0); /* + * Enable idle task deep sleep. Allow the low power idle task + * to go into deep sleep in S3 or lower. + */ + enable_sleep(SLEEP_MASK_AP_RUN); + + /* * Deassert prochot since CPU is off and we're about to drop * +VCCP. */ |