drivers/usb/isp1760/isp1760-udc.h

Source file repositories/reference/linux-study-clean/drivers/usb/isp1760/isp1760-udc.h

File Facts

System
Linux kernel
Corpus path
drivers/usb/isp1760/isp1760-udc.h
Extension
.h
Size
2400 bytes
Lines
109
Domain
Driver Families
Bucket
drivers/usb
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct isp1760_ep {
	struct isp1760_udc *udc;
	struct usb_ep ep;

	struct list_head queue;

	unsigned int addr;
	unsigned int maxpacket;
	char name[7];

	const struct usb_endpoint_descriptor *desc;

	bool rx_pending;
	bool halted;
	bool wedged;
};

/**
 * struct isp1760_udc - UDC state information
 * irq: IRQ number
 * irqname: IRQ name (as passed to request_irq)
 * regs: regmap for UDC registers
 * driver: Gadget driver
 * gadget: Gadget device
 * lock: Protects driver, vbus_timer, ep, ep0_*, DC_EPINDEX register
 * ep: Array of endpoints
 * ep0_state: Control request state for endpoint 0
 * ep0_dir: Direction of the current control request
 * ep0_length: Length of the current control request
 * connected: Tracks gadget driver bus connection state
 */
struct isp1760_udc {
	struct isp1760_device *isp;

	int irq;
	char *irqname;

	struct regmap *regs;
	struct regmap_field *fields[DC_FIELD_MAX];

	struct usb_gadget_driver *driver;
	struct usb_gadget gadget;

	spinlock_t lock;
	struct timer_list vbus_timer;

	struct isp1760_ep ep[15];

	enum isp1760_ctrl_state ep0_state;
	u8 ep0_dir;
	u16 ep0_length;

	bool connected;
	bool is_isp1763;

	unsigned int devstatus;
};

#ifdef CONFIG_USB_ISP1761_UDC
int isp1760_udc_register(struct isp1760_device *isp, int irq,
			 unsigned long irqflags);
void isp1760_udc_unregister(struct isp1760_device *isp);
#else
static inline int isp1760_udc_register(struct isp1760_device *isp, int irq,
				       unsigned long irqflags)
{
	return 0;
}

static inline void isp1760_udc_unregister(struct isp1760_device *isp)
{
}
#endif

#endif

Annotation

Implementation Notes