wake_reason_t spm_go_to_sleep(void)
{
wake_status_t *wakesta;
unsigned long flags,i;
struct mtk_irq_mask mask;
static wake_reason_t last_wr = WR_NONE;
if(pcm_config_suspend.reserved & SPM_SUSPEND_GET_FGUAGE)
pcm_config_suspend.timer_val_ms = spm_get_wake_period(last_wr)*1000;
mtk_wdt_suspend();
spin_lock_irqsave(&spm_lock, flags);
mt_irq_mask_all(&mask);
mt_irq_unmask_for_sleep(MT_SPM0_IRQ_ID);
if (spm_init_pcm(&pcm_config_suspend)==false)
goto RESTORE_IRQ;
spm_kick_pcm(&pcm_config_suspend);
snapshot_golden_setting(__FUNCTION__, __LINE__);
spm_trigger_wfi(&pcm_config_suspend);
wakesta = spm_get_wakeup_status(&pcm_config_suspend);
last_wr = wakesta->wake_reason;
spm_clean_after_wakeup();
RESTORE_IRQ:
mt_irq_mask_restore(&mask);
spin_unlock_irqrestore(&spm_lock, flags);
mtk_wdt_resume();
return last_wr;
}
/*
* pwrlevel:
* 0: CPU standby + AP sleep => legacy sleep mode
* 1: CPU dormant (L1/L2 sleep) + AP sleep
* 2: CPU shutdown (L1/L2 power down) + AP sleep
*/
wake_reason_t sc_go_to_sleep(unsigned int pwrlevel)
{
u32 wakesrc, dvfscon, sec = 0;
int i, r;
unsigned long flags;
struct mtk_irq_mask mask;
static wake_reason_t last_wr = WR_NONE;
sc_info2("pwrlevel = %u\n", pwrlevel);
if (sc_pwake_en)
sec = sc_get_wake_period(!!(last_wr != WR_SLP_TMR));
mtk_wdt_suspend();
spin_lock_irqsave(&sc_lock, flags);
wakesrc = sc_wake_src;
for (i = 0; i < NUM_WAKE_SRC; i++) {
if (wakesrc & (1U << i)) {
r = sc_enable_wake_irq(sc_wake_irq[i]);
if (r)
wakesrc &= ~(1U << i);
}
}
mt_irq_mask_all(&mask);
mt_irq_unmask_for_sleep(MT_SLEEP_IRQ_ID);
/* to workaround DVFS issue due to CKDIV1 failure */
dvfscon = sc_read(SC_AP_DVFS_CON);
//ckdiv1 = sc_read(TOP_CKDIV1);
sc_write(SC_AP_DVFS_CON, dvfscon | 0x3);
sc_write_sync();
sc_set_apmcu_pwrctl(pwrlevel);
#ifdef CONFIG_MTK_SC_DEBUG
/* bypass CSYSPWRUPREQ to avoid keeping SRCLKENA high */
sc_write(SC_CLK_CON, sc_read(SC_CLK_CON) | SC_CLK_CON_BYPASSDBG);
sc_write_sync();
#endif
last_wr = sc_enter_pause_mode(pwrlevel, sec, wakesrc);
#ifdef CONFIG_MTK_SC_DEBUG
/* restore SC_CLK_CON */
sc_write(SC_CLK_CON, sc_read(SC_CLK_CON) & ~SC_CLK_CON_BYPASSDBG);
sc_write_sync();
#endif
/* to workaround DVFS issue due to CKDIV1 failure */
//sc_write(TOP_CKDIV1, 0x00);
//sc_write(TOP_CKDIV1, ckdiv1);
sc_write(SC_AP_DVFS_CON, dvfscon);
sc_write_sync();
mt_irq_mask_restore(&mask);
spin_unlock_irqrestore(&sc_lock, flags);
mtk_wdt_resume();
return last_wr;
}