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usb: gadget: Introduce handle_interrupts ops to USB_GADGET_GENERIC uclass

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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 overridden by
the drivers, but this will be removed once conversion to handle_interrupts
callback is complete.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # vim3
Link: https://lore.kernel.org/r/20240614005309.34433-2-marek.vasut+renesas@mailbox.org
[mkorpershoek: fixed trivial typo in commit message]
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
This commit is contained in:
Marek Vasut
2024-06-14 02:51:16 +02:00
committed by Mattijs Korpershoek
parent 1918b8010c
commit d36ef5cbed
2 changed files with 32 additions and 0 deletions
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24
drivers/usb/gadget/udc/udc-uclass.c
View File

@@ -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)

8
include/linux/usb/gadget.h
View File

@@ -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