1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * (C) Copyright 2000 4 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it 5 */ 6 7 #ifndef _STDIO_DEV_H_ 8 #define _STDIO_DEV_H_ 9 10 #include <stdio.h> 11 #include <linux/list.h> 12 13 /* 14 * STDIO DEVICES 15 */ 16 17 #define DEV_FLAGS_INPUT 0x00000001 /* Device can be used as input console */ 18 #define DEV_FLAGS_OUTPUT 0x00000002 /* Device can be used as output console */ 19 #define DEV_FLAGS_DM 0x00000004 /* Device priv is a struct udevice * */ 20 21 /* Device information */ 22 struct stdio_dev { 23 int flags; /* Device flags: input/output/system */ 24 int ext; /* Supported extensions */ 25 char name[32]; /* Device name */ 26 27 /* GENERAL functions */ 28 29 int (*start)(struct stdio_dev *dev); /* To start the device */ 30 int (*stop)(struct stdio_dev *dev); /* To stop the device */ 31 32 /* OUTPUT functions */ 33 34 /* To put a char */ 35 void (*putc)(struct stdio_dev *dev, const char c); 36 /* To put a string (accelerator) */ 37 void (*puts)(struct stdio_dev *dev, const char *s); 38 39 /* INPUT functions */ 40 41 /* To test if a char is ready... */ 42 int (*tstc)(struct stdio_dev *dev); 43 int (*getc)(struct stdio_dev *dev); /* To get that char */ 44 45 /* Other functions */ 46 47 void *priv; /* Private extensions */ 48 struct list_head list; 49 }; 50 51 /* 52 * VARIABLES 53 */ 54 extern struct stdio_dev *stdio_devices[]; 55 extern char *stdio_names[MAX_FILES]; 56 57 /* 58 * PROTOTYPES 59 */ 60 int stdio_register (struct stdio_dev * dev); 61 int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp); 62 63 /** 64 * stdio_init_tables() - set up stdio tables ready for devices 65 * 66 * This does not add any devices, but just prepares stdio for use. 67 */ 68 int stdio_init_tables(void); 69 70 /** 71 * stdio_add_devices() - Add stdio devices to the table 72 * 73 * This makes calls to all the various subsystems that use stdio, to make 74 * them register with stdio. 75 */ 76 int stdio_add_devices(void); 77 78 /** 79 * stdio_init() - Sets up stdio ready for use 80 * 81 * This calls stdio_init_tables() and stdio_add_devices() 82 */ 83 int stdio_init(void); 84 85 void stdio_print_current_devices(void); 86 #if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) 87 int stdio_deregister(const char *devname, int force); 88 int stdio_deregister_dev(struct stdio_dev *dev, int force); 89 #endif 90 struct list_head* stdio_get_list(void); 91 struct stdio_dev* stdio_get_by_name(const char* name); 92 struct stdio_dev* stdio_clone(struct stdio_dev *dev); 93 94 #ifdef CONFIG_LCD 95 int drv_lcd_init (void); 96 #endif 97 #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) 98 int drv_video_init (void); 99 #endif 100 #ifdef CONFIG_KEYBOARD 101 int drv_keyboard_init (void); 102 #endif 103 #ifdef CONFIG_USB_TTY 104 int drv_usbtty_init (void); 105 #endif 106 #ifdef CONFIG_NETCONSOLE 107 int drv_nc_init (void); 108 #endif 109 #ifdef CONFIG_JTAG_CONSOLE 110 int drv_jtag_console_init (void); 111 #endif 112 #ifdef CONFIG_CBMEM_CONSOLE 113 int cbmemc_init(void); 114 #endif 115 116 #endif 117