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1 | /* |
2 | * linux/include/linux/serial_8250.h |
3 | * |
4 | * Copyright (C) 2004 Russell King |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | */ |
11 | #ifndef _LINUX_SERIAL_8250_H |
12 | #define _LINUX_SERIAL_8250_H |
13 | |
14 | #include <linux/serial_core.h> |
15 | #include <linux/platform_device.h> |
16 | |
17 | /* |
18 | * This is the platform device platform_data structure |
19 | */ |
20 | struct plat_serial8250_port { |
21 | unsigned long iobase; /* io base address */ |
22 | void __iomem *membase; /* ioremap cookie or NULL */ |
23 | resource_size_t mapbase; /* resource base */ |
24 | unsigned int irq; /* interrupt number */ |
25 | unsigned long irqflags; /* request_irq flags */ |
26 | unsigned int uartclk; /* UART clock rate */ |
27 | void *private_data; |
28 | unsigned char regshift; /* register shift */ |
29 | unsigned char iotype; /* UPIO_* */ |
30 | unsigned char hub6; |
31 | upf_t flags; /* UPF_* flags */ |
32 | unsigned int type; /* If UPF_FIXED_TYPE */ |
33 | unsigned int (*serial_in)(struct uart_port *, int); |
34 | void (*serial_out)(struct uart_port *, int, int); |
35 | }; |
36 | |
37 | /* |
38 | * Allocate 8250 platform device IDs. Nothing is implied by |
39 | * the numbering here, except for the legacy entry being -1. |
40 | */ |
41 | enum { |
42 | PLAT8250_DEV_LEGACY = -1, |
43 | PLAT8250_DEV_PLATFORM, |
44 | PLAT8250_DEV_PLATFORM1, |
45 | PLAT8250_DEV_PLATFORM2, |
46 | PLAT8250_DEV_FOURPORT, |
47 | PLAT8250_DEV_ACCENT, |
48 | PLAT8250_DEV_BOCA, |
49 | PLAT8250_DEV_EXAR_ST16C554, |
50 | PLAT8250_DEV_HUB6, |
51 | PLAT8250_DEV_MCA, |
52 | PLAT8250_DEV_AU1X00, |
53 | PLAT8250_DEV_SM501, |
54 | }; |
55 | |
56 | /* |
57 | * This should be used by drivers which want to register |
58 | * their own 8250 ports without registering their own |
59 | * platform device. Using these will make your driver |
60 | * dependent on the 8250 driver. |
61 | */ |
62 | struct uart_port; |
63 | |
64 | int serial8250_register_port(struct uart_port *); |
65 | void serial8250_unregister_port(int line); |
66 | void serial8250_suspend_port(int line); |
67 | void serial8250_resume_port(int line); |
68 | |
69 | extern int early_serial_setup(struct uart_port *port); |
70 | |
71 | extern int serial8250_find_port(struct uart_port *p); |
72 | extern int serial8250_find_port_for_earlycon(void); |
73 | extern int setup_early_serial8250_console(char *cmdline); |
74 | |
75 | #endif |
76 |
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