1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
11 #include <linux/list.h>
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 * */
21 int stdio_file_to_flags(const int file);
23 /* Device information */
25 int flags; /* Device flags: input/output/system */
26 int ext; /* Supported extensions */
27 char name[32]; /* Device name */
29 /* GENERAL functions */
31 int (*start)(struct stdio_dev *dev); /* To start the device */
32 int (*stop)(struct stdio_dev *dev); /* To stop the device */
34 /* OUTPUT functions */
37 void (*putc)(struct stdio_dev *dev, const char c);
38 /* To put a string (accelerator) */
39 void (*puts)(struct stdio_dev *dev, const char *s);
40 #ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
41 /* To flush output queue */
42 void (*flush)(struct stdio_dev *dev);
43 #define STDIO_DEV_ASSIGN_FLUSH(dev, flush_func) ((dev)->flush = (flush_func))
45 #define STDIO_DEV_ASSIGN_FLUSH(dev, flush_func)
50 /* To test if a char is ready... */
51 int (*tstc)(struct stdio_dev *dev);
52 int (*getc)(struct stdio_dev *dev); /* To get that char */
56 void *priv; /* Private extensions */
57 struct list_head list;
63 extern struct stdio_dev *stdio_devices[];
64 extern char *stdio_names[MAX_FILES];
69 int stdio_register(struct stdio_dev *dev);
70 int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp);
73 * stdio_init_tables() - set up stdio tables ready for devices
75 * This does not add any devices, but just prepares stdio for use.
77 int stdio_init_tables(void);
80 * stdio_add_devices() - Add stdio devices to the table
82 * This makes calls to all the various subsystems that use stdio, to make
83 * them register with stdio.
85 int stdio_add_devices(void);
88 * stdio_init() - Sets up stdio ready for use
90 * This calls stdio_init_tables() and stdio_add_devices()
94 void stdio_print_current_devices(void);
97 * stdio_deregister_dev() - deregister the device "devname".
99 * @dev: Stdio device to deregister
100 * @force: true to force deregistration even if in use
102 * returns 0 on success, -EBUSY if device is assigned
104 int stdio_deregister_dev(struct stdio_dev *dev, int force);
105 struct list_head *stdio_get_list(void);
106 struct stdio_dev *stdio_get_by_name(const char *name);
107 struct stdio_dev *stdio_clone(struct stdio_dev *dev);
109 int drv_lcd_init(void);
110 int drv_video_init(void);
111 int drv_keyboard_init(void);
112 int drv_usbtty_init(void);
113 int drv_usbacm_init(void);
114 int drv_nc_init(void);
115 int drv_jtag_console_init(void);
116 int cbmemc_init(void);