1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *  PS3 virtual uart
4 *
5 *  Copyright (C) 2006 Sony Computer Entertainment Inc.
6 *  Copyright 2006 Sony Corp.
7 */
8
9#if !defined(_PS3_VUART_H)
10#define _PS3_VUART_H
11
12#include <asm/ps3.h>
13
14struct ps3_vuart_stats {
15	unsigned long bytes_written;
16	unsigned long bytes_read;
17	unsigned long tx_interrupts;
18	unsigned long rx_interrupts;
19	unsigned long disconnect_interrupts;
20};
21
22struct ps3_vuart_work {
23	struct work_struct work;
24	unsigned long trigger;
25	struct ps3_system_bus_device *dev; /* to convert work to device */
26};
27
28/**
29 * struct ps3_vuart_port_driver - a driver for a device on a vuart port
30 */
31
32struct ps3_vuart_port_driver {
33	struct ps3_system_bus_driver core;
34	int (*probe)(struct ps3_system_bus_device *);
35	int (*remove)(struct ps3_system_bus_device *);
36	void (*shutdown)(struct ps3_system_bus_device *);
37	void (*work)(struct ps3_system_bus_device *);
38	/* int (*tx_event)(struct ps3_system_bus_device *dev); */
39	/* int (*rx_event)(struct ps3_system_bus_device *dev); */
40	/* int (*disconnect_event)(struct ps3_system_bus_device *dev); */
41	/* int (*suspend)(struct ps3_system_bus_device *, pm_message_t); */
42	/* int (*resume)(struct ps3_system_bus_device *); */
43};
44
45int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
46void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
47
48static inline struct ps3_vuart_port_driver *
49	ps3_system_bus_dev_to_vuart_drv(struct ps3_system_bus_device *_dev)
50{
51	struct ps3_system_bus_driver *sbd =
52		ps3_system_bus_dev_to_system_bus_drv(_dev);
53	BUG_ON(!sbd);
54	return container_of(sbd, struct ps3_vuart_port_driver, core);
55}
56static inline struct ps3_system_bus_device *ps3_vuart_work_to_system_bus_dev(
57	struct work_struct *_work)
58{
59	struct ps3_vuart_work *vw = container_of(_work, struct ps3_vuart_work,
60		work);
61	return vw->dev;
62}
63
64int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
65	unsigned int bytes);
66int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
67	unsigned int bytes);
68int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
69void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
70void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
71	unsigned int bytes);
72
73struct vuart_triggers {
74	unsigned long rx;
75	unsigned long tx;
76};
77
78int ps3_vuart_get_triggers(struct ps3_system_bus_device *dev,
79	struct vuart_triggers *trig);
80int ps3_vuart_set_triggers(struct ps3_system_bus_device *dev, unsigned int tx,
81	unsigned int rx);
82int ps3_vuart_enable_interrupt_tx(struct ps3_system_bus_device *dev);
83int ps3_vuart_disable_interrupt_tx(struct ps3_system_bus_device *dev);
84int ps3_vuart_enable_interrupt_rx(struct ps3_system_bus_device *dev);
85int ps3_vuart_disable_interrupt_rx(struct ps3_system_bus_device *dev);
86int ps3_vuart_enable_interrupt_disconnect(struct ps3_system_bus_device *dev);
87int ps3_vuart_disable_interrupt_disconnect(struct ps3_system_bus_device *dev);
88
89#endif
90