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drivers: usb_dc_stm32: implement usb_dc_detach()

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Implement support to detach USB device.

Signed-off-by: romain pelletant <romainp@kickmaker.net>
This commit is contained in:
romain pelletant 2022-10-20 10:31:34 +02:00 committed by Fabio Baltieri
parent 0b4d33bcbb
commit 8aa4164518
1 changed files with 34 additions and 1 deletions
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35
drivers/usb/device/usb_dc_stm32.c
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@ -348,6 +348,22 @@ static int usb_dc_stm32_clock_enable(void)
return 0;
}
static int usb_dc_stm32_clock_disable(void)
{
const struct device *clk = DEVICE_DT_GET(STM32_CLOCK_CONTROL_NODE);
struct stm32_pclken pclken = {
.bus = USB_CLOCK_BUS,
.enr = USB_CLOCK_BITS,
};
if (clock_control_off(clk, (clock_control_subsys_t *)&pclken) != 0) {
LOG_ERR("Unable to disable USB clock");
return -EIO;
}
return 0;
}
#if defined(USB_OTG_FS) || defined(USB_OTG_HS)
static uint32_t usb_dc_stm32_get_maximum_speed(void)
{
@ -994,7 +1010,8 @@ int usb_dc_ep_mps(const uint8_t ep)
int usb_dc_detach(void)
{
LOG_ERR("Not implemented");
HAL_StatusTypeDef status;
int ret;
#ifdef CONFIG_SOC_SERIES_STM32WBX
/* Specially for STM32WB, unlock the HSEM when USB is no more used. */
@ -1008,6 +1025,22 @@ int usb_dc_detach(void)
*/
#endif /* CONFIG_SOC_SERIES_STM32WBX */
LOG_DBG("HAL_PCD_DeInit");
status = HAL_PCD_DeInit(&usb_dc_stm32_state.pcd);
if (status != HAL_OK) {
LOG_ERR("PCD_DeInit failed, %d", (int)status);
return -EIO;
}
ret = usb_dc_stm32_clock_disable();
if (ret) {
return ret;
}
if (irq_is_enabled(USB_IRQ)) {
irq_disable(USB_IRQ);
}
return 0;
}