static irqreturn_t mdm_status_change(int irq, void *dev_id)
{
int value;
struct esoc_clink *esoc;
struct mdm_ctrl *mdm = (struct mdm_ctrl *)dev_id;
struct device *dev;
if (!mdm)
return IRQ_HANDLED;
dev = mdm->dev;
esoc = mdm->esoc;
value = gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS));
if (value == 0 && mdm->ready) {
dev_err(dev, "unexpected reset external modem\n");
esoc_clink_evt_notify(ESOC_UNEXPECTED_RESET, esoc);
} else if (value == 1) {
cancel_delayed_work(&mdm->mdm2ap_status_check_work);
dev_info(dev, "status = 1: mdm is now ready\n");
mdm->ready = true;
queue_work(mdm->mdm_queue, &mdm->mdm_status_work);
if (mdm->get_restart_reason)
queue_work(mdm->mdm_queue, &mdm->restart_reason_work);
}
return IRQ_HANDLED;
}
static irqreturn_t mdm_errfatal(int irq, void *dev_id)
{
struct mdm_ctrl *mdm = (struct mdm_ctrl *)dev_id;
struct esoc_clink *esoc;
struct device *dev;
if (!mdm)
goto no_mdm_irq;
dev = mdm->dev;
if (!mdm->ready)
goto mdm_pwroff_irq;
esoc = mdm->esoc;
if(!gpio_get_value(MDM_GPIO(mdm, MDM2AP_ERRFATAL)) || !gpio_get_value(MDM_GPIO(mdm, MDM2AP_VDDMIN))) {
dev_err(dev, "%s: ignore IRQ errfatal: %d, vddmin: %d\n", __func__,
gpio_get_value(MDM_GPIO(mdm, MDM2AP_ERRFATAL)),
gpio_get_value(MDM_GPIO(mdm, MDM2AP_VDDMIN)));
return IRQ_HANDLED;
}
dev_err(dev, "%s: mdm sent errfatal interrupt\n",
__func__);
dev_err(dev, "%s: ep0_timeout: %d\n", __func__, ep0_timeout_cnt);
exynos_pcie_dump_link_down_status(0);
/* disable irq ?*/
esoc_clink_evt_notify(ESOC_ERR_FATAL, esoc);
mdm_fatal_debug_gpio_show(mdm);
return IRQ_HANDLED;
mdm_pwroff_irq:
dev_info(dev, "errfatal irq when in pwroff\n");
no_mdm_irq:
return IRQ_HANDLED;
}
static void mdm2ap_status_check(struct work_struct *work)
{
struct mdm_ctrl *mdm =
container_of(work, struct mdm_ctrl,
mdm2ap_status_check_work.work);
struct device *dev = mdm->dev;
struct esoc_clink *esoc = mdm->esoc;
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)) == 0) {
dev_dbg(dev, "MDM2AP_STATUS did not go high\n");
esoc_clink_evt_notify(ESOC_UNEXPECTED_RESET, esoc);
}
}
static irqreturn_t mdm_errfatal(int irq, void *dev_id)
{
struct mdm_ctrl *mdm = (struct mdm_ctrl *)dev_id;
struct esoc_clink *esoc;
struct device *dev;
if (!mdm)
goto no_mdm_irq;
dev = mdm->dev;
if (!mdm->ready)
goto mdm_pwroff_irq;
esoc = mdm->esoc;
dev_err(dev, "%s: mdm sent errfatal interrupt\n",
__func__);
/* disable irq ?*/
esoc_clink_evt_notify(ESOC_ERR_FATAL, esoc);
return IRQ_HANDLED;
mdm_pwroff_irq:
dev_info(dev, "errfatal irq when in pwroff\n");
no_mdm_irq:
return IRQ_HANDLED;
}
static void mdm_notify(enum esoc_notify notify, struct esoc_clink *esoc)
{
bool status_down;
uint64_t timeout;
uint64_t now;
struct mdm_ctrl *mdm = get_esoc_clink_data(esoc);
struct device *dev = mdm->dev;
switch (notify) {
case ESOC_IMG_XFER_DONE:
dev_info(dev, "%s ESOC_IMG_XFER_DONE\n", __func__);
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)) == 0)
schedule_delayed_work(&mdm->mdm2ap_status_check_work,
msecs_to_jiffies(MDM2AP_STATUS_TIMEOUT_MS));
break;
case ESOC_BOOT_DONE:
esoc_clink_evt_notify(ESOC_RUN_STATE, esoc);
break;
case ESOC_IMG_XFER_RETRY:
mdm->init = 1;
mdm_toggle_soft_reset(mdm);
break;
case ESOC_IMG_XFER_FAIL:
esoc_clink_evt_notify(ESOC_BOOT_FAIL, esoc);
break;
case ESOC_UPGRADE_AVAILABLE:
break;
case ESOC_DEBUG_DONE:
mdm->debug_fail = false;
mdm_update_gpio_configs(mdm, GPIO_UPDATE_BOOTING_CONFIG);
complete(&mdm->debug_done);
break;
case ESOC_DEBUG_FAIL:
mdm->debug_fail = true;
complete(&mdm->debug_done);
break;
case ESOC_PRIMARY_CRASH:
mdm_disable_irqs(mdm);
status_down = false;
dev_info(dev, "signal apq err fatal for graceful restart\n");
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 1);
timeout = local_clock();
do_div(timeout, NSEC_PER_MSEC);
timeout += MDM_MODEM_TIMEOUT;
do {
if (gpio_get_value(MDM_GPIO(mdm,
MDM2AP_STATUS)) == 0) {
status_down = true;
break;
}
now = local_clock();
do_div(now, NSEC_PER_MSEC);
} while (!time_after64(now, timeout));
if (!status_down) {
dev_err(mdm->dev, "%s MDM2AP status did not go low\n",
__func__);
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!!mdm->soft_reset_inverted);
/*
* allow PS hold assert to be detected.
* pmic requires 6ms for crash reset case.
*/
mdelay(6);
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!mdm->soft_reset_inverted);
}
break;
case ESOC_PRIMARY_REBOOT:
dev_info(mdm->dev, "Triggering mdm cold reset");
mdm->ready = 0;
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!!mdm->soft_reset_inverted);
mdelay(300);
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!mdm->soft_reset_inverted);
break;
};
return;
}
static void mdm_notify(enum esoc_notify notify, struct esoc_clink *esoc)
{
bool status_down;
uint64_t timeout;
uint64_t now;
struct mdm_ctrl *mdm = get_esoc_clink_data(esoc);
struct device *dev = mdm->dev;
int ret;
int max_spin = 20;
switch (notify) {
case ESOC_IMG_XFER_DONE:
dev_info(dev, "%s ESOC_IMG_XFER_DONE\n", __func__);
if (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)) == 0)
schedule_delayed_work(&mdm->mdm2ap_status_check_work,
msecs_to_jiffies(MDM2AP_STATUS_TIMEOUT_MS));
break;
case ESOC_BOOT_DONE:
esoc_clink_evt_notify(ESOC_RUN_STATE, esoc);
break;
case ESOC_IMG_XFER_RETRY:
mdm->init = 1;
mdm_toggle_soft_reset(mdm);
break;
case ESOC_IMG_XFER_FAIL:
esoc_clink_evt_notify(ESOC_INVALID_STATE, esoc);
break;
case ESOC_BOOT_FAIL:
esoc_clink_evt_notify(ESOC_INVALID_STATE, esoc);
break;
case ESOC_UPGRADE_AVAILABLE:
break;
case ESOC_DEBUG_DONE:
mdm->debug_fail = false;
mdm_update_gpio_configs(mdm, GPIO_UPDATE_BOOTING_CONFIG);
complete(&mdm->debug_done);
break;
case ESOC_DEBUG_FAIL:
mdm->debug_fail = true;
complete(&mdm->debug_done);
break;
case ESOC_PRIMARY_CRASH:
mdm_disable_irqs(mdm);
status_down = false;
dev_info(dev, "signal apq err fatal for graceful restart\n");
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 1);
gpio_set_value(MDM_GPIO(mdm, AP2MDM_VDDMIN), 1);
timeout = local_clock();
do_div(timeout, NSEC_PER_MSEC);
timeout += MDM_MODEM_TIMEOUT;
do {
if (gpio_get_value(MDM_GPIO(mdm,
MDM2AP_STATUS)) == 0) {
status_down = true;
break;
}
now = local_clock();
do_div(now, NSEC_PER_MSEC);
} while (!time_after64(now, timeout));
if (!status_down) {
dev_err(mdm->dev, "%s MDM2AP status did not go low\n",
__func__);
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!!mdm->soft_reset_inverted);
/*
* allow PS hold assert to be detected.
* pmic requires 6ms for crash reset case.
*/
mdelay(6);
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!mdm->soft_reset_inverted);
}
break;
case ESOC_PRIMARY_REBOOT:
exynos_pcie_disable_irq(0);
mdm_disable_irqs(mdm);
dev_info(mdm->dev, "Triggering mdm cold reset");
mdm->ready = 0;
while (gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)) && max_spin--) {
msleep(100);
dev_info(mdm->dev, "gpio_get_value(MDM2AP_STATUS) : %d\n",
gpio_get_value(MDM_GPIO(mdm, MDM2AP_STATUS)));
}
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!!mdm->soft_reset_inverted);
mdelay(300);
gpio_direction_output(MDM_GPIO(mdm, AP2MDM_SOFT_RESET),
!mdm->soft_reset_inverted);
break;
case ESOC_DIAG_DISABLE:
dev_info(mdm->dev, "Send diag_disable noti\n");
ret = sysmon_send_diag_disable_noti(mdm->sysmon_subsys_id);
if (ret < 0)
dev_err(mdm->dev, "sending diag_disable noti is failed, ret = %d\n", ret);
else
dev_info(mdm->dev, "sending diag_disable noti is succeed.\n");
break;
case ESOC_FORCE_CPCRASH:
dev_err(mdm->dev, "Force CP Crash\n");
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 1);
gpio_set_value(MDM_GPIO(mdm, AP2MDM_VDDMIN), 1);
break;
case ESOC_CP_SILENT_RESET:
dev_err(mdm->dev, "Force CP Silent Reset\n");
set_silent_reset();
gpio_set_value(MDM_GPIO(mdm, AP2MDM_ERRFATAL), 1);
gpio_set_value(MDM_GPIO(mdm, AP2MDM_VDDMIN), 1);
break;
};
return;
}