static void spm_trigger_wfi_for_sleep(struct pwr_ctrl *pwrctrl)
{
// sync_hw_gating_value(); /* for Vcore DVFS */
if (is_cpu_pdn(pwrctrl->pcm_flags)) {
spm_dormant_sta = mt_cpu_dormant(CPU_SHUTDOWN_MODE/* | DORMANT_SKIP_WFI*/);
switch (spm_dormant_sta)
{
case MT_CPU_DORMANT_RESET:
break;
case MT_CPU_DORMANT_ABORT:
break;
case MT_CPU_DORMANT_BREAK:
break;
case MT_CPU_DORMANT_BYPASS:
break;
}
} else {
spm_dormant_sta = -1;
spm_write(CA7_BUS_CONFIG, spm_read(CA7_BUS_CONFIG) | 0x10);
wfi_with_sync();
spm_write(CA7_BUS_CONFIG, spm_read(CA7_BUS_CONFIG) & ~0x10);
}
if (is_infra_pdn(pwrctrl->pcm_flags))
mtk_uart_restore();
}
static void spm_trigger_wfi_for_sleep(struct pwr_ctrl *pwrctrl)
{
//FIXME: for K2 fpga early porting
#if 0
sync_hw_gating_value(); /* for Vcore DVFS */
#endif
if (is_cpu_pdn(pwrctrl->pcm_flags)) {
spm_dormant_sta = mt_cpu_dormant(CPU_SHUTDOWN_MODE/* | DORMANT_SKIP_WFI*/);
switch (spm_dormant_sta)
{
case MT_CPU_DORMANT_RESET:
break;
case MT_CPU_DORMANT_ABORT:
break;
case MT_CPU_DORMANT_BREAK:
break;
case MT_CPU_DORMANT_BYPASS:
break;
}
} else {
spm_dormant_sta = -1;
//spm_write(MP0_AXI_CONFIG, spm_read(MP0_AXI_CONFIG) | ACINACTM);
wfi_with_sync();
// spm_write(MP0_AXI_CONFIG, spm_read(MP0_AXI_CONFIG) & ~ACINACTM);
}
if (is_infra_pdn(pwrctrl->pcm_flags))
mtk_uart_restore();
}
static int slp_suspend_ops_begin(suspend_state_t state)
{
/* legacy log */
slp_notice("@@@@@@@@@@@@@@@@@@@@\n");
slp_notice("Chip_pm_begin(%u)(%u)\n", is_cpu_pdn(slp_spm_flags), is_infra_pdn(slp_spm_flags));
slp_notice("@@@@@@@@@@@@@@@@@@@@\n");
slp_wake_reason = WR_NONE;
return 0;
}
/*
* go_to_sleep_before_wfi() - trigger SPM to enter suspend scenario
*/
static void go_to_sleep_before_wfi(const unsigned int spm_flags)
{
struct pwr_ctrl *pwrctrl;
pwrctrl = &spm_ctrl;
set_pwrctrl_pcm_flags(pwrctrl, spm_flags);
spm_set_sysclk_settle();
INFO("sec = %u, wakesrc = 0x%x (%u)(%u)\n",
pwrctrl->timer_val, pwrctrl->wake_src,
is_cpu_pdn(pwrctrl->pcm_flags),
is_infra_pdn(pwrctrl->pcm_flags));
spm_reset_and_init_pcm();
spm_init_pcm_register();
spm_set_power_control(pwrctrl);
spm_set_wakeup_event(pwrctrl);
spm_kick_pcm_to_run(pwrctrl);
spm_init_event_vector(&suspend_pcm_ca7);
spm_kick_im_to_fetch(&suspend_pcm_ca7);
}
bool slp_will_infra_pdn(void)
{
return is_infra_pdn(slp_spm_flags);
}
static int slp_suspend_ops_enter(suspend_state_t state)
{
int ret = 0;
#ifdef CONFIG_MTK_TC1_FM_AT_SUSPEND
int fm_radio_is_playing = 0;
if ( ConditionEnterSuspend() == true )
fm_radio_is_playing = 0;
else
fm_radio_is_playing = 1;
#endif /* CONFIG_MTK_TC1_FM_AT_SUSPEND */
#ifdef CONFIG_MTKPASR
/* PASR SW operations */
enter_pasrdpd();
#endif
/* legacy log */
slp_notice("@@@@@@@@@@@@@@@@@@@@\n");
slp_crit2("Chip_pm_enter\n");
slp_notice("@@@@@@@@@@@@@@@@@@@@\n");
//FIXME: for K2 bring up
if (slp_dump_gpio)
gpio_dump_regs();
#if 0
if (slp_dump_regs)
slp_dump_pm_regs();
#endif
if (slp_check_mtcmos_pll)
slp_check_pm_mtcmos_pll();
if (!spm_cpusys0_can_power_down()) {
slp_error("CANNOT SLEEP DUE TO CPU1~x PON, SPM_PWR_STATUS = 0x%x, SPM_PWR_STATUS_2ND = 0x%x\n",
slp_read(SPM_PWR_STATUS), slp_read(SPM_PWR_STATUS_2ND));
//return -EPERM;
ret = -EPERM;
goto LEAVE_SLEEP;
}
if (is_infra_pdn(slp_spm_flags) && !is_cpu_pdn(slp_spm_flags)) {
slp_error("CANNOT SLEEP DUE TO INFRA PDN BUT CPU PON\n");
//return -EPERM;
ret = -EPERM;
goto LEAVE_SLEEP;
}
/* only for test */
#if 0
slp_pasr_en(1, 0x0);
slp_dpd_en(1);
#endif
#if SLP_SLEEP_DPIDLE_EN
#ifdef CONFIG_MTK_TC1_FM_AT_SUSPEND
if (slp_ck26m_on | fm_radio_is_playing)
#else
if (slp_ck26m_on)
#endif
slp_wake_reason = spm_go_to_sleep_dpidle(slp_spm_deepidle_flags, slp_spm_data);
else
#endif
slp_wake_reason = spm_go_to_sleep(slp_spm_flags, slp_spm_data);
LEAVE_SLEEP:
#ifdef CONFIG_MTKPASR
/* PASR SW operations */
leave_pasrdpd();
#endif
#ifdef CONFIG_MTK_SYSTRACKER
systracker_enable();
#endif
return ret;
}
wake_reason_t spm_go_to_sleep(u32 spm_flags, u32 spm_data)
{
u32 sec = 0;
int wd_ret;
struct wake_status wakesta;
unsigned long flags;
struct mtk_irq_mask mask;
struct wd_api *wd_api;
static wake_reason_t last_wr = WR_NONE;
struct pcm_desc *pcmdesc = __spm_suspend.pcmdesc;
struct pwr_ctrl *pwrctrl = __spm_suspend.pwrctrl;
struct spm_lp_scen *lpscen;
lpscen = spm_check_talking_get_lpscen(&__spm_suspend, &spm_flags);
pcmdesc = lpscen->pcmdesc;
pwrctrl = lpscen->pwrctrl;
set_pwrctrl_pcm_flags(pwrctrl, spm_flags);
set_pwrctrl_pcm_data(pwrctrl, spm_data);
#if SPM_PWAKE_EN
sec = spm_get_wake_period(-1 /* FIXME */, last_wr);
#endif
pwrctrl->timer_val = sec * 32768;
wd_ret = get_wd_api(&wd_api);
if (!wd_ret)
wd_api->wd_suspend_notify();
spm_suspend_pre_process(pwrctrl);
spin_lock_irqsave(&__spm_lock, flags);
mt_irq_mask_all(&mask);
mt_irq_unmask_for_sleep(MT_SPM_IRQ_ID);
mt_cirq_clone_gic();
mt_cirq_enable();
spm_set_sysclk_settle();
spm_crit2("sec = %u, wakesrc = 0x%x (%u)(%u)\n",
sec, pwrctrl->wake_src, is_cpu_pdn(pwrctrl->pcm_flags), is_infra_pdn(pwrctrl->pcm_flags));
if (request_uart_to_sleep()) {
last_wr = WR_UART_BUSY;
goto RESTORE_IRQ;
}
__spm_reset_and_init_pcm(pcmdesc);
__spm_kick_im_to_fetch(pcmdesc);
__spm_init_pcm_register();
__spm_init_event_vector(pcmdesc);
__spm_set_power_control(pwrctrl);
__spm_set_wakeup_event(pwrctrl);
spm_kick_pcm_to_run(pwrctrl);
#if 0
if (1 == spm_snapshot_golden_setting)
{
snapshot_golden_setting(__FUNCTION__, __LINE__);
spm_snapshot_golden_setting = 2;
}
#endif
spm_trigger_wfi_for_sleep(pwrctrl);
__spm_get_wakeup_status(&wakesta);
spm_clean_after_wakeup();
request_uart_to_wakeup();
last_wr = spm_output_wake_reason(&wakesta, pcmdesc);
RESTORE_IRQ:
mt_cirq_flush();
mt_cirq_disable();
mt_irq_mask_restore(&mask);
spin_unlock_irqrestore(&__spm_lock, flags);
spm_suspend_post_process(pwrctrl);
if (!wd_ret)
wd_api->wd_resume_notify();
return last_wr;
}
