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 * |
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 | } |
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 | |