Introduce .ops for USB_GADGET_GENERIC uclass. The first new ops is .handle_interrupts which must be implemented by DM capable USB gadget controller drivers and must implement interrupt handling similar to dm_usb_gadget_handle_interrupts(). This patch currently provides weak dm_usb_gadget_handle_interrupts() implementation which is overriden by the drivers, but this will be removed once conversion to handle_interrupts callback is complete.
Signed-off-by: Marek Vasut <[email protected]> --- Cc: Alexander Sverdlin <[email protected]> Cc: Felipe Balbi <[email protected]> Cc: Lukasz Majewski <[email protected]> Cc: Mattijs Korpershoek <[email protected]> Cc: Nishanth Menon <[email protected]> Cc: Simon Glass <[email protected]> Cc: Thinh Nguyen <[email protected]> Cc: Tom Rini <[email protected]> Cc: [email protected] --- drivers/usb/gadget/udc/udc-uclass.c | 24 ++++++++++++++++++++++++ include/linux/usb/gadget.h | 8 ++++++++ 2 files changed, 32 insertions(+) diff --git a/drivers/usb/gadget/udc/udc-uclass.c b/drivers/usb/gadget/udc/udc-uclass.c index 5dc23a55bb5..2320039fe3b 100644 --- a/drivers/usb/gadget/udc/udc-uclass.c +++ b/drivers/usb/gadget/udc/udc-uclass.c @@ -12,6 +12,25 @@ #include <linux/usb/gadget.h> #if CONFIG_IS_ENABLED(DM_USB_GADGET) +static inline const struct usb_gadget_generic_ops * +usb_gadget_generic_dev_ops(struct udevice *dev) +{ + return (const struct usb_gadget_generic_ops *)dev->driver->ops; +} + +__weak int dm_usb_gadget_handle_interrupts(struct udevice *dev) +{ + const struct usb_gadget_generic_ops *ops; + + ops = usb_gadget_generic_dev_ops(dev); + if (!ops) + return -EFAULT; + if (!ops->handle_interrupts) + return -ENOSYS; + + return ops->handle_interrupts(dev); +} + int udc_device_get_by_index(int index, struct udevice **udev) { struct udevice *dev = NULL; @@ -54,6 +73,11 @@ int udc_device_put(struct udevice *udev) { return board_usb_cleanup(legacy_index, USB_INIT_DEVICE); } + +__weak int dm_usb_gadget_handle_interrupts(struct udevice *dev) +{ + return 0; +} #endif #if CONFIG_IS_ENABLED(DM) diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 36572be89e6..cf2161603d6 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -970,6 +970,14 @@ extern void usb_ep_autoconfig_reset(struct usb_gadget *); extern int dm_usb_gadget_handle_interrupts(struct udevice *); +/** + * struct usb_gadget_generic_ops - The functions that a gadget driver must implement. + * @handle_interrupts: Handle UDC interrupts. + */ +struct usb_gadget_generic_ops { + int (*handle_interrupts)(struct udevice *udevice); +}; + /** * udc_device_get_by_index() - Get UDC udevice by index * @index: UDC device index -- 2.43.0
