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
14 struct 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
22 struct 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
32 struct 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
45 int ps3_vuart_port_driver_register(struct ps3_vuart_port_driver *drv);
46 void ps3_vuart_port_driver_unregister(struct ps3_vuart_port_driver *drv);
47
48 static inline struct ps3_vuart_port_driver *
ps3_system_bus_dev_to_vuart_drv(struct ps3_system_bus_device * _dev)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 }
ps3_vuart_work_to_system_bus_dev(struct work_struct * _work)56 static 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
64 int ps3_vuart_write(struct ps3_system_bus_device *dev, const void *buf,
65 unsigned int bytes);
66 int ps3_vuart_read(struct ps3_system_bus_device *dev, void *buf,
67 unsigned int bytes);
68 int ps3_vuart_read_async(struct ps3_system_bus_device *dev, unsigned int bytes);
69 void ps3_vuart_cancel_async(struct ps3_system_bus_device *dev);
70 void ps3_vuart_clear_rx_bytes(struct ps3_system_bus_device *dev,
71 unsigned int bytes);
72
73 struct vuart_triggers {
74 unsigned long rx;
75 unsigned long tx;
76 };
77
78 int ps3_vuart_get_triggers(struct ps3_system_bus_device *dev,
79 struct vuart_triggers *trig);
80 int ps3_vuart_set_triggers(struct ps3_system_bus_device *dev, unsigned int tx,
81 unsigned int rx);
82 int ps3_vuart_enable_interrupt_tx(struct ps3_system_bus_device *dev);
83 int ps3_vuart_disable_interrupt_tx(struct ps3_system_bus_device *dev);
84 int ps3_vuart_enable_interrupt_rx(struct ps3_system_bus_device *dev);
85 int ps3_vuart_disable_interrupt_rx(struct ps3_system_bus_device *dev);
86 int ps3_vuart_enable_interrupt_disconnect(struct ps3_system_bus_device *dev);
87 int ps3_vuart_disable_interrupt_disconnect(struct ps3_system_bus_device *dev);
88
89 #endif
90