mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-09-22 15:42:04 +00:00
fc2b399ac0
Add support for CDC ACM using the new UDC and gadget API. This protocol can be used for serial over USB data transfer and is widely supported by various OS (GNU/Linux, MS-Windows, OSX...). The usual purpose of such link is to access device debug console and can be useful for products not exposing regular UART to the user. A default stdio device named 'usbacm' is created, and can be used to redirect console to USB link over CDC ACM: > setenv stdin usbacm; setenv stdout usbacm Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2000
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* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
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*/
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#ifndef _STDIO_DEV_H_
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#define _STDIO_DEV_H_
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#include <stdio.h>
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#include <linux/list.h>
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/*
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* STDIO DEVICES
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*/
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#define DEV_FLAGS_INPUT 0x00000001 /* Device can be used as input console */
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#define DEV_FLAGS_OUTPUT 0x00000002 /* Device can be used as output console */
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#define DEV_FLAGS_DM 0x00000004 /* Device priv is a struct udevice * */
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int stdio_file_to_flags(const int file);
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/* Device information */
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struct stdio_dev {
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int flags; /* Device flags: input/output/system */
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int ext; /* Supported extensions */
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char name[32]; /* Device name */
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/* GENERAL functions */
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int (*start)(struct stdio_dev *dev); /* To start the device */
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int (*stop)(struct stdio_dev *dev); /* To stop the device */
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/* OUTPUT functions */
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/* To put a char */
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void (*putc)(struct stdio_dev *dev, const char c);
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/* To put a string (accelerator) */
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void (*puts)(struct stdio_dev *dev, const char *s);
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/* INPUT functions */
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/* To test if a char is ready... */
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int (*tstc)(struct stdio_dev *dev);
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int (*getc)(struct stdio_dev *dev); /* To get that char */
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/* Other functions */
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void *priv; /* Private extensions */
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struct list_head list;
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};
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/*
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* VARIABLES
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*/
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extern struct stdio_dev *stdio_devices[];
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extern char *stdio_names[MAX_FILES];
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/*
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* PROTOTYPES
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*/
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int stdio_register(struct stdio_dev *dev);
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int stdio_register_dev(struct stdio_dev *dev, struct stdio_dev **devp);
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/**
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* stdio_init_tables() - set up stdio tables ready for devices
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*
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* This does not add any devices, but just prepares stdio for use.
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*/
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int stdio_init_tables(void);
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/**
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* stdio_add_devices() - Add stdio devices to the table
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*
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* This makes calls to all the various subsystems that use stdio, to make
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* them register with stdio.
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*/
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int stdio_add_devices(void);
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/**
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* stdio_init() - Sets up stdio ready for use
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*
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* This calls stdio_init_tables() and stdio_add_devices()
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*/
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int stdio_init(void);
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void stdio_print_current_devices(void);
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/**
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* stdio_deregister_dev() - deregister the device "devname".
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*
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* @dev: Stdio device to deregister
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* @force: true to force deregistration even if in use
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*
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* returns 0 on success, -EBUSY if device is assigned
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*/
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int stdio_deregister_dev(struct stdio_dev *dev, int force);
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struct list_head *stdio_get_list(void);
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struct stdio_dev *stdio_get_by_name(const char *name);
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struct stdio_dev *stdio_clone(struct stdio_dev *dev);
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int drv_lcd_init(void);
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int drv_video_init(void);
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int drv_keyboard_init(void);
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int drv_usbtty_init(void);
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int drv_usbacm_init(void);
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int drv_nc_init(void);
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int drv_jtag_console_init(void);
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int cbmemc_init(void);
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#endif
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