/* add chenfeng */
void clock_print_yl(int force)
{
char *value = "on";
if (!force && strcmp(value, ClockOnOff))
return;
else
clock_debug_print_enabled();
}
/*
* Suspend the Apps processor.
*
* Return value:
* -EPERM: Suspend happened by a not permitted core
* -EAGAIN: modem reset occurred or early exit from suspend
* -EBUSY: modem not ready for our suspend
* -EINVAL: invalid sleep mode
* -EIO: could not ramp Apps processor clock
* -ETIMEDOUT: timed out waiting for modem's handshake
* 0: success
*/
static int msm_pm_enter(suspend_state_t state)
{
bool allow[MSM_PM_SLEEP_MODE_NR];
uint32_t sleep_limit = SLEEP_LIMIT_NONE;
int ret = -EPERM;
int i;
int64_t period = 0;
int64_t time = 0;
/* Must executed by CORE0 */
if (smp_processor_id()) {
__WARN();
goto suspend_exit;
}
time = msm_pm_timer_enter_suspend(&period);
MSM_PM_DPRINTK(MSM_PM_DEBUG_SUSPEND, KERN_INFO,
"%s(): sleep limit %u\n", __func__, sleep_limit);
for (i = 0; i < ARRAY_SIZE(allow); i++)
allow[i] = true;
for (i = 0; i < ARRAY_SIZE(allow); i++) {
struct msm_pm_platform_data *mode;
mode = &msm_pm_modes[MSM_PM_MODE(0, i)];
if (!mode->suspend_supported || !mode->suspend_enabled)
allow[i] = false;
}
if (allow[MSM_PM_SLEEP_MODE_POWER_COLLAPSE] ||
allow[MSM_PM_SLEEP_MODE_POWER_COLLAPSE_NO_XO_SHUTDOWN]) {
enum msm_pm_time_stats_id id;
clock_debug_print_enabled();
#ifdef CONFIG_MSM_SLEEP_TIME_OVERRIDE
if (msm_pm_sleep_time_override > 0) {
int64_t ns;
ns = NSEC_PER_SEC * (int64_t)msm_pm_sleep_time_override;
msm_pm_set_max_sleep_time(ns);
msm_pm_sleep_time_override = 0;
}
#endif
if (!allow[MSM_PM_SLEEP_MODE_POWER_COLLAPSE])
sleep_limit = SLEEP_LIMIT_NO_TCXO_SHUTDOWN;
#if defined(CONFIG_MSM_MEMORY_LOW_POWER_MODE_SUSPEND_ACTIVE)
sleep_limit |= SLEEP_RESOURCE_MEMORY_BIT1;
#elif defined(CONFIG_MSM_MEMORY_LOW_POWER_MODE_SUSPEND_RETENTION)
sleep_limit |= SLEEP_RESOURCE_MEMORY_BIT0;
#elif defined(CONFIG_MSM_MEMORY_LOW_POWER_MODE_SUSPEND_DEEP_POWER_DOWN)
if (get_msm_migrate_pages_status() != MEM_OFFLINE)
sleep_limit |= SLEEP_RESOURCE_MEMORY_BIT0;
#endif
for (i = 0; i < 30 && msm_pm_modem_busy(); i++)
udelay(500);
ret = msm_pm_power_collapse(
false, msm_pm_max_sleep_time, sleep_limit);
if (ret)
id = MSM_PM_STAT_FAILED_SUSPEND;
else {
id = MSM_PM_STAT_SUSPEND;
msm_pm_sleep_limit = sleep_limit;
}
time = msm_pm_timer_exit_suspend(time, period);
msm_pm_add_stat(id, time);
} else if (allow[MSM_PM_SLEEP_MODE_POWER_COLLAPSE_STANDALONE]) {
ret = msm_pm_power_collapse_standalone(false);
} else if (allow[MSM_PM_SLEEP_MODE_RAMP_DOWN_AND_WAIT_FOR_INTERRUPT]) {
ret = msm_pm_swfi(true);
if (ret)
while (!msm_pm_irq_extns->irq_pending())
udelay(1);
} else if (allow[MSM_PM_SLEEP_MODE_WAIT_FOR_INTERRUPT]) {
msm_pm_swfi(false);
}
suspend_exit:
MSM_PM_DPRINTK(MSM_PM_DEBUG_SUSPEND, KERN_INFO,
"%s(): return %d\n", __func__, ret);
return ret;
}