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 int uartclk; /* UART clock rate */ 26 unsigned char regshift; /* register shift */ 27 unsigned char iotype; /* UPIO_* */ 28 unsigned char hub6; 29 upf_t flags; /* UPF_* flags */ 30 }; 31 32 /* 33 * Allocate 8250 platform device IDs. Nothing is implied by 34 * the numbering here, except for the legacy entry being -1. 35 */ 36 enum { 37 PLAT8250_DEV_LEGACY = -1, 38 PLAT8250_DEV_PLATFORM, 39 PLAT8250_DEV_PLATFORM1, 40 PLAT8250_DEV_PLATFORM2, 41 PLAT8250_DEV_FOURPORT, 42 PLAT8250_DEV_ACCENT, 43 PLAT8250_DEV_BOCA, 44 PLAT8250_DEV_EXAR_ST16C554, 45 PLAT8250_DEV_HUB6, 46 PLAT8250_DEV_MCA, 47 PLAT8250_DEV_AU1X00, 48 }; 49 50 /* 51 * This should be used by drivers which want to register 52 * their own 8250 ports without registering their own 53 * platform device. Using these will make your driver 54 * dependent on the 8250 driver. 55 */ 56 struct uart_port; 57 58 int serial8250_register_port(struct uart_port *); 59 void serial8250_unregister_port(int line); 60 void serial8250_suspend_port(int line); 61 void serial8250_resume_port(int line); 62 63 extern int early_serial_setup(struct uart_port *port); 64 65 extern int serial8250_find_port(struct uart_port *p); 66 extern int serial8250_find_port_for_earlycon(void); 67 extern int setup_early_serial8250_console(char *cmdline); 68 69 #endif 70