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drivers: usb_dc_nrfx: add attached event delay

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Add configurable attached event delay. Delay can be used to give
USB Charging Controller time for initialization.

Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
This commit is contained in:
Johann Fischer 2020-12-17 18:02:59 +01:00 • committed by Anas Nashif
commit 26f2e33227
2 changed files with 46 additions and 15 deletions
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9
drivers/usb/device/Kconfig
View file

@ -75,6 +75,15 @@ config USB_NRFX_WORK_QUEUE_STACK_SIZE
for handling the events from the USBD ISR, i.e. executing endpoint for handling the events from the USBD ISR, i.e. executing endpoint
callbacks and providing proper notifications to the USB device stack. callbacks and providing proper notifications to the USB device stack.
config USB_NRFX_ATTACHED_EVENT_DELAY
int "USBD attached event delay"
range 0 1000
default 0
depends on USB_NRFX
help
Configurable attached event delay in milliseconds. Delay can be used
to give USB Charging Controller time for initialization.
config USB_KINETIS config USB_KINETIS
bool "Kinetis USB Device Controller Driver" bool "Kinetis USB Device Controller Driver"
select USB_DEVICE_DRIVER select USB_DEVICE_DRIVER

52
drivers/usb/device/usb_dc_nrfx.c
View file

@ -466,14 +466,50 @@ static inline struct usbd_event *usbd_evt_alloc(void)
return ev; return ev;
} }
static void submit_dc_power_event(enum usbd_periph_state state)
{
struct usbd_event *ev = usbd_evt_alloc();
if (!ev) {
return;
}
ev->evt_type = USBD_EVT_POWER;
ev->evt.pwr_evt.state = state;
usbd_evt_put(ev);
if (usbd_ctx.attached) {
usbd_work_schedule();
}
}
#if CONFIG_USB_NRFX_ATTACHED_EVENT_DELAY
static void attached_evt_delay_handler(struct k_timer *timer)
{
LOG_DBG("ATTACHED event delay done");
submit_dc_power_event(USBD_ATTACHED);
}
static K_TIMER_DEFINE(delay_timer, attached_evt_delay_handler, NULL);
#endif
static void usb_dc_power_event_handler(nrfx_power_usb_evt_t event) static void usb_dc_power_event_handler(nrfx_power_usb_evt_t event)
{ {
enum usbd_periph_state new_state; enum usbd_periph_state new_state;
switch (event) { switch (event) {
case NRFX_POWER_USB_EVT_DETECTED: case NRFX_POWER_USB_EVT_DETECTED:
#if !CONFIG_USB_NRFX_ATTACHED_EVENT_DELAY
new_state = USBD_ATTACHED; new_state = USBD_ATTACHED;
break; break;
#else
LOG_DBG("ATTACHED event delayed");
k_timer_start(&delay_timer,
K_MSEC(CONFIG_USB_NRFX_ATTACHED_EVENT_DELAY),
K_NO_WAIT);
return;
#endif
case NRFX_POWER_USB_EVT_READY: case NRFX_POWER_USB_EVT_READY:
new_state = USBD_POWERED; new_state = USBD_POWERED;
break; break;
@ -485,21 +521,7 @@ static void usb_dc_power_event_handler(nrfx_power_usb_evt_t event)
return; return;
} }
struct usbd_event *ev = usbd_evt_alloc(); submit_dc_power_event(new_state);
if (!ev) {
return;
}
ev->evt_type = USBD_EVT_POWER;
ev->evt.pwr_evt.state = new_state;
usbd_evt_put(ev);
if (usbd_ctx.attached) {
usbd_work_schedule();
}
} }
/* Stopping HFXO, algorithm supports case when stop comes before clock is /* Stopping HFXO, algorithm supports case when stop comes before clock is