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1da177e4 LT |
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> | |
d052d1be | 15 | #include <linux/platform_device.h> |
1da177e4 | 16 | |
bc49a661 RK |
17 | /* |
18 | * This is the platform device platform_data structure | |
19 | */ | |
1da177e4 LT |
20 | struct plat_serial8250_port { |
21 | unsigned long iobase; /* io base address */ | |
22 | void __iomem *membase; /* ioremap cookie or NULL */ | |
4f640efb | 23 | resource_size_t mapbase; /* resource base */ |
1da177e4 | 24 | unsigned int irq; /* interrupt number */ |
1c2f0493 | 25 | unsigned long irqflags; /* request_irq flags */ |
1da177e4 | 26 | unsigned int uartclk; /* UART clock rate */ |
74a19741 | 27 | void *private_data; |
1da177e4 LT |
28 | unsigned char regshift; /* register shift */ |
29 | unsigned char iotype; /* UPIO_* */ | |
ec9f47cd | 30 | unsigned char hub6; |
0077d45e | 31 | upf_t flags; /* UPF_* flags */ |
8e23fcc8 | 32 | unsigned int type; /* If UPF_FIXED_TYPE */ |
7d6a07d1 DD |
33 | unsigned int (*serial_in)(struct uart_port *, int); |
34 | void (*serial_out)(struct uart_port *, int, int); | |
235dae5d PL |
35 | void (*set_termios)(struct uart_port *, |
36 | struct ktermios *new, | |
37 | struct ktermios *old); | |
583d28e9 | 38 | int (*handle_irq)(struct uart_port *); |
c161afe9 ML |
39 | void (*pm)(struct uart_port *, unsigned int state, |
40 | unsigned old); | |
bf03f65b | 41 | void (*handle_break)(struct uart_port *); |
1da177e4 LT |
42 | }; |
43 | ||
6df29deb RK |
44 | /* |
45 | * Allocate 8250 platform device IDs. Nothing is implied by | |
46 | * the numbering here, except for the legacy entry being -1. | |
47 | */ | |
48 | enum { | |
49 | PLAT8250_DEV_LEGACY = -1, | |
50 | PLAT8250_DEV_PLATFORM, | |
51 | PLAT8250_DEV_PLATFORM1, | |
104c7b03 | 52 | PLAT8250_DEV_PLATFORM2, |
6df29deb RK |
53 | PLAT8250_DEV_FOURPORT, |
54 | PLAT8250_DEV_ACCENT, | |
55 | PLAT8250_DEV_BOCA, | |
e0980daf | 56 | PLAT8250_DEV_EXAR_ST16C554, |
6df29deb | 57 | PLAT8250_DEV_HUB6, |
21c614a7 | 58 | PLAT8250_DEV_AU1X00, |
61711f8f | 59 | PLAT8250_DEV_SM501, |
6df29deb RK |
60 | }; |
61 | ||
9ee4b83e HK |
62 | struct uart_8250_dma; |
63 | ||
bc49a661 RK |
64 | /* |
65 | * This should be used by drivers which want to register | |
66 | * their own 8250 ports without registering their own | |
67 | * platform device. Using these will make your driver | |
68 | * dependent on the 8250 driver. | |
69 | */ | |
ce7240e4 AC |
70 | |
71 | struct uart_8250_port { | |
72 | struct uart_port port; | |
73 | struct timer_list timer; /* "no irq" timer */ | |
74 | struct list_head list; /* ports on this IRQ */ | |
75 | unsigned short capabilities; /* port capabilities */ | |
76 | unsigned short bugs; /* port bugs */ | |
aef9a7bd | 77 | bool fifo_bug; /* min RX trigger if enabled */ |
ce7240e4 AC |
78 | unsigned int tx_loadsz; /* transmit fifo load size */ |
79 | unsigned char acr; | |
aef9a7bd | 80 | unsigned char fcr; |
ce7240e4 AC |
81 | unsigned char ier; |
82 | unsigned char lcr; | |
83 | unsigned char mcr; | |
84 | unsigned char mcr_mask; /* mask of user bits */ | |
85 | unsigned char mcr_force; /* mask of forced bits */ | |
86 | unsigned char cur_iotype; /* Running I/O type */ | |
baeb7ef3 | 87 | unsigned int rpm_tx_active; |
ce7240e4 AC |
88 | |
89 | /* | |
90 | * Some bits in registers are cleared on a read, so they must | |
91 | * be saved whenever the register is read but the bits will not | |
92 | * be immediately processed. | |
93 | */ | |
94 | #define LSR_SAVE_FLAGS UART_LSR_BRK_ERROR_BITS | |
95 | unsigned char lsr_saved_flags; | |
96 | #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA | |
97 | unsigned char msr_saved_flags; | |
98 | ||
9ee4b83e | 99 | struct uart_8250_dma *dma; |
e676253b | 100 | struct serial_rs485 rs485; |
9ee4b83e | 101 | |
ce7240e4 AC |
102 | /* 8250 specific callbacks */ |
103 | int (*dl_read)(struct uart_8250_port *); | |
104 | void (*dl_write)(struct uart_8250_port *, int); | |
e676253b RRD |
105 | int (*rs485_config)(struct uart_8250_port *, |
106 | struct serial_rs485 *rs485); | |
ce7240e4 | 107 | }; |
bc49a661 | 108 | |
b1261c86 AS |
109 | static inline struct uart_8250_port *up_to_u8250p(struct uart_port *up) |
110 | { | |
111 | return container_of(up, struct uart_8250_port, port); | |
112 | } | |
113 | ||
f73fa05b | 114 | int serial8250_register_8250_port(struct uart_8250_port *); |
bc49a661 RK |
115 | void serial8250_unregister_port(int line); |
116 | void serial8250_suspend_port(int line); | |
117 | void serial8250_resume_port(int line); | |
118 | ||
b187f180 YL |
119 | extern int early_serial_setup(struct uart_port *port); |
120 | ||
18a8bd94 YL |
121 | extern int serial8250_find_port(struct uart_port *p); |
122 | extern int serial8250_find_port_for_earlycon(void); | |
ed71871b NC |
123 | extern unsigned int serial8250_early_in(struct uart_port *port, int offset); |
124 | extern void serial8250_early_out(struct uart_port *port, int offset, int value); | |
18a8bd94 | 125 | extern int setup_early_serial8250_console(char *cmdline); |
235dae5d PL |
126 | extern void serial8250_do_set_termios(struct uart_port *port, |
127 | struct ktermios *termios, struct ktermios *old); | |
b99b121b SAS |
128 | extern int serial8250_do_startup(struct uart_port *port); |
129 | extern void serial8250_do_shutdown(struct uart_port *port); | |
c161afe9 ML |
130 | extern void serial8250_do_pm(struct uart_port *port, unsigned int state, |
131 | unsigned int oldstate); | |
9deaa53a | 132 | extern int fsl8250_handle_irq(struct uart_port *port); |
583d28e9 | 133 | int serial8250_handle_irq(struct uart_port *port, unsigned int iir); |
3986fb2b PG |
134 | unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr); |
135 | void serial8250_tx_chars(struct uart_8250_port *up); | |
136 | unsigned int serial8250_modem_status(struct uart_8250_port *up); | |
18a8bd94 | 137 | |
af7f3743 AC |
138 | extern void serial8250_set_isa_configurator(void (*v) |
139 | (int port, struct uart_port *up, | |
140 | unsigned short *capabilities)); | |
141 | ||
1da177e4 | 142 | #endif |