static void mdm_power_on_common(struct mdm_modem_drv *mdm_drv)
{
mdm_drv->power_on_count++;
/* this gpio will be used to indicate apq readiness,
* de-assert it now so that it can be asserted later.
* May not be used.
*/
if (GPIO_IS_VALID(MDM_GPIO(AP2MDM_WAKEUP)))
gpio_direction_output(MDM_GPIO(AP2MDM_WAKEUP), 0);
/*
* If we did an "early power on" then ignore the very next
* power-on request because it would the be first request from
* user space but we're already powered on. Ignore it.
*/
if (mdm_drv->pdata->early_power_on &&
(mdm_drv->power_on_count == 2))
return;
if (mdm_drv->power_on_count == 1)
mdm_do_first_power_on(mdm_drv);
else
mdm_do_soft_power_on(mdm_drv);
}
static void mdm_power_on_common(struct mdm_modem_drv *mdm_drv)
{
power_on_count++;
/* this gpio will be used to indicate apq readiness,
* de-assert it now so that it can be asserted later.
* May not be used.
*/
if (GPIO_IS_VALID(mdm_drv->ap2mdm_wakeup_gpio))
gpio_direction_output(mdm_drv->ap2mdm_wakeup_gpio, 0);
/*
* If we did an "early power on" then ignore the very next
* power-on request because it would the be first request from
* user space but we're already powered on. Ignore it.
*/
if (mdm_drv->pdata->early_power_on &&
(power_on_count == 2))
return;
#ifdef CONFIG_SONY_QSCFLASHING_UART4
/*
* If we want to enter into edl mode, we should hard reboot the QSC,
* so we use the mdm_do_first_power_on
*/
if (mdm_drv->mdm_edload_status == 1) {
mdm_do_first_power_on(mdm_drv);
power_on_count--;
return;
}
#endif
if (power_on_count == 1)
mdm_do_first_power_on(mdm_drv);
else
mdm_do_soft_power_on(mdm_drv);
}
static int mdm_cmd_exe(enum esoc_cmd cmd, struct esoc_clink *esoc)
{
int ret;
unsigned long end_time;
bool status_down = false;
struct mdm_ctrl *mdm = get_esoc_clink_data(esoc);
struct device *dev = mdm->dev;
switch (cmd) {
case ESOC_PWR_ON:
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 0);
mdm_enable_irqs(mdm);
mdm->init = 1;
mdm_do_first_power_on(mdm);
break;
case ESOC_PWR_OFF:
mdm_disable_irqs(mdm);
mdm->debug = 0;
mdm->ready = false;
ret = sysmon_send_shutdown(mdm->sysmon_subsys_id);
device_lock(dev);
if (ret)
dev_err(mdm->dev, "Graceful shutdown fail, ret = %d\n",
ret);
else {
dev_info(mdm->dev, "Waiting for status gpio go low\n");
status_down = false;
end_time = jiffies + msecs_to_jiffies(10000);
while (time_before(jiffies, end_time)) {
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS))
== 0) {
dev_dbg(dev, "Status went low\n");
status_down = true;
break;
}
msleep(100);
}
if (status_down)
dev_info(dev, "shutdown successful\n");
else
dev_err(mdm->dev, "graceful poff ipc fail\n");
}
/*
* Force a shutdown of the mdm. This is required in order
* to prevent the mdm from immediately powering back on
* after the shutdown
*/
gpio_set_value(MDM_GPIO(mdm, AP2MDM_STATUS), 0);
esoc_clink_queue_request(ESOC_REQ_SHUTDOWN, esoc);
mdm_power_down(mdm);
mdm_update_gpio_configs(mdm, GPIO_UPDATE_BOOTING_CONFIG);
device_unlock(dev);
break;
case ESOC_RESET:
mdm_toggle_soft_reset(mdm);
break;
case ESOC_PREPARE_DEBUG:
/*
* disable all irqs except request irq (pblrdy)
* force a reset of the mdm by signaling
* an APQ crash, wait till mdm is ready for ramdumps.
*/
mdm->ready = false;
cancel_delayed_work(&mdm->mdm2ap_status_check_work);
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 1);
dev_info(mdm->dev, "set ap2mdm errfatal to force reset\n");
msleep(mdm->ramdump_delay_ms);
break;
case ESOC_EXE_DEBUG:
mdm->debug = 1;
mdm_toggle_soft_reset(mdm);
/*
* wait for ramdumps to be collected
* then power down the mdm and switch gpios to booting
* config
*/
if (!wait_for_completion_timeout(&mdm->debug_done,
msecs_to_jiffies(mdm->dump_timeout_ms))) {
dev_err(mdm->dev, "ramdump collection timedout\n");
mdm->debug = 0;
return -ETIMEDOUT;
}
if (mdm->debug_fail) {
dev_err(mdm->dev, "unable to collect ramdumps\n");
mdm->debug = 0;
return -EIO;
}
dev_dbg(mdm->dev, "ramdump collection done\n");
mdm->debug = 0;
init_completion(&mdm->debug_done);
break;
case ESOC_EXIT_DEBUG:
/*
* Deassert APQ to mdm err fatal
* Power on the mdm
*/
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 0);
dev_dbg(mdm->dev, "exiting debug state after power on\n");
mdm->get_restart_reason = true;
break;
default:
return -EINVAL;
};
return 0;
}
