static int bcmpmu_otg_xceiv_a_invalid_notif_handler(
struct notifier_block *nb, unsigned long value, void *data)
{
struct bcmpmu_otg_xceiv_data *xceiv_data =
container_of(nb, struct bcmpmu_otg_xceiv_data,
bcm_otg_vbus_a_invalid_notifier);
bool suspend_allowed = false;
if (!xceiv_data)
return -EINVAL;
/* Check if system suspend is allowed */
bcm_hsotgctrl_is_suspend_allowed(&suspend_allowed);
if (suspend_allowed) {
/* Clock must be off. Enable OTG AHB clock */
bcm_hsotgctrl_en_clock(true);
}
/* Inform the core of session invalid level */
bcm_hsotgctrl_phy_set_vbus_stat(false);
/* This triggers shutdown that will turn off the clock */
atomic_notifier_call_chain(&xceiv_data->otg_xceiver.
xceiver.notifier,
USB_EVENT_NONE, NULL);
return 0;
}
static int bcmpmu_otg_xceiv_pm_suspend(struct platform_device *pdev,
pm_message_t state)
{
int status = 0;
struct bcmpmu_otg_xceiv_data *xceiv_data = platform_get_drvdata(pdev);
bool suspend_allowed = false;
if (bcm_hsotgctrl_is_suspend_allowed(&suspend_allowed)) {
dev_warn(&pdev->dev,
"Failed to check if USB allows sys suspend\n");
} else {
if ((suspend_allowed == false) || xceiv_data->otg_enabled) {
/* Don't allow runtime suspend if USB is active
* or in OTG mode */
status = -EBUSY;
} else {
/* Allow runtime suspend since USB is not active */
status = 0;
}
}
return status;
}
