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/*
* Copyright (c) 2008 Travis Geiselbrecht
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __DEV_USBC_H
#define __DEV_USBC_H
#include <sys/types.h>
#include <stdio.h>
#include <hw/usb.h>
void usbc_init(void);
typedef uint ep_t;
typedef enum {
IN = 0,
OUT
} ep_dir_t;
typedef enum {
CB_RESET,
CB_SUSPEND,
CB_RESUME,
CB_DISCONNECT,
CB_ONLINE,
CB_OFFLINE,
CB_SETUP_MSG,
/* endpoint transfer stuff */
CB_EP_RXCOMPLETE,
CB_EP_TXCOMPLETE,
CB_EP_TRANSFER_CANCELLED,
} usbc_callback_op_t;
typedef struct {
void *buf;
size_t buflen;
uint bufpos;
int result;
void *extra; // extra pointer to store whatever you want
} usbc_transfer;
enum {
USB_TRANSFER_RESULT_OK = 0,
USB_TRANSFER_RESULT_ERR = -1,
USB_TRANSFER_RESULT_CANCELLED = -2,
};
typedef int (*ep_callback)(ep_t endpoint, usbc_callback_op_t op, usbc_transfer *transfer);
void usbc_setup_endpoint(ep_t ep, ep_dir_t dir, bool active, ep_callback callback, uint width, uint blocksize);
int usbc_queue_rx(ep_t ep, usbc_transfer *transfer);
int usbc_queue_tx(ep_t ep, usbc_transfer *transfer);
/* setup arg is valid during CB_SETUP_MSG */
union usb_callback_args {
const struct usb_setup *setup;
};
typedef int (*usb_callback)(usbc_callback_op_t op, const union usb_callback_args *args);
int usbc_set_callback(usb_callback);
int usbc_set_active(bool active);
/* called back from within a callback to handle setup responses */
void usbc_ep0_ack(void);
void usbc_ep0_stall(void);
void usbc_ep0_send(const void *buf, size_t len, size_t maxlen);
void usbc_ep0_recv(void *buf, size_t len, ep_callback);
bool usbc_is_highspeed(void);
static inline void usbc_dump_transfer(const usbc_transfer *t)
{
printf("usb transfer %p: buf %p, buflen %zd, bufpos %u, result %d\n", t, t->buf, t->buflen, t->bufpos, t->result);
}
#endif
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