projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| bc49a661 RK |
62 | /* |
| 63 | * This should be used by drivers which want to register | |
| 64 | * their own 8250 ports without registering their own | |
| 65 | * platform device. Using these will make your driver | |
| 66 | * dependent on the 8250 driver. | |
| 67 | */ | |
| ce7240e4 AC |
68 | |
| 69 | struct uart_8250_port { | |
| 70 | struct uart_port port; | |
| 71 | struct timer_list timer; /* "no irq" timer */ | |
| 72 | struct list_head list; /* ports on this IRQ */ | |
| 73 | unsigned short capabilities; /* port capabilities */ | |
| 74 | unsigned short bugs; /* port bugs */ | |
| 75 | unsigned int tx_loadsz; /* transmit fifo load size */ | |
| 76 | unsigned char acr; | |
| 77 | unsigned char ier; | |
| 78 | unsigned char lcr; | |
| 79 | unsigned char mcr; | |
| 80 | unsigned char mcr_mask; /* mask of user bits */ | |
| 81 | unsigned char mcr_force; /* mask of forced bits */ | |
| 82 | unsigned char cur_iotype; /* Running I/O type */ | |
| 83 | ||
| 84 | /* | |
| 85 | * Some bits in registers are cleared on a read, so they must | |
| 86 | * be saved whenever the register is read but the bits will not | |
| 87 | * be immediately processed. | |
| 88 | */ | |
| 89 | #define LSR_SAVE_FLAGS UART_LSR_BRK_ERROR_BITS | |
| 90 | unsigned char lsr_saved_flags; | |
| 91 | #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA | |
| 92 | unsigned char msr_saved_flags; | |
| 93 | ||
| 94 | /* 8250 specific callbacks */ | |
| 95 | int (*dl_read)(struct uart_8250_port *); | |
| 96 | void (*dl_write)(struct uart_8250_port *, int); | |
| 97 | }; | |
| bc49a661 | 98 | |
| f73fa05b | 99 | int serial8250_register_8250_port(struct uart_8250_port *); |
| bc49a661 RK |
100 | void serial8250_unregister_port(int line); |
| 101 | void serial8250_suspend_port(int line); | |
| 102 | void serial8250_resume_port(int line); | |
| 103 | ||
| b187f180 YL |
104 | extern int early_serial_setup(struct uart_port *port); |
| 105 | ||
| 18a8bd94 YL |
106 | extern int serial8250_find_port(struct uart_port *p); |
| 107 | extern int serial8250_find_port_for_earlycon(void); | |
| ed71871b NC |
108 | extern unsigned int serial8250_early_in(struct uart_port *port, int offset); |
| 109 | extern void serial8250_early_out(struct uart_port *port, int offset, int value); | |
| 18a8bd94 | 110 | extern int setup_early_serial8250_console(char *cmdline); |
| 235dae5d PL |
111 | extern void serial8250_do_set_termios(struct uart_port *port, |
| 112 | struct ktermios *termios, struct ktermios *old); | |
| c161afe9 ML |
113 | extern void serial8250_do_pm(struct uart_port *port, unsigned int state, |
| 114 | unsigned int oldstate); | |
| 9deaa53a | 115 | extern int fsl8250_handle_irq(struct uart_port *port); |
| 583d28e9 | 116 | int serial8250_handle_irq(struct uart_port *port, unsigned int iir); |
| 3986fb2b PG |
117 | unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr); |
| 118 | void serial8250_tx_chars(struct uart_8250_port *up); | |
| 119 | unsigned int serial8250_modem_status(struct uart_8250_port *up); | |
| 18a8bd94 | 120 | |
| af7f3743 AC |
121 | extern void serial8250_set_isa_configurator(void (*v) |
| 122 | (int port, struct uart_port *up, | |
| 123 | unsigned short *capabilities)); | |
| 124 | ||
| 1da177e4 | 125 | #endif |