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/**
* (c) 2001-2004 Nathan Hjelm <hjelmn@users.sourceforge.net>
* v1.4 driver_usbdevfs.c
*
* Allows rioutil to communicate with the rio through linux usbdevfs.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**/
#include "driver.h"
#if defined(WITH_USBDEVFS)
#include <errno.h>
void usb_close_rio (rios_t *rio) {
struct rioutil_usbdevice *dev = (struct rioutil_usbdevice *)rio->dev;
riousb_close (dev->dev);
free (dev);
}
int usb_open_rio (rios_t *rio, int number) {
struct usbdevice *tmp;
struct rioutil_usbdevice *plyr = NULL;
struct player_device_info *p;
int ret;
if (number != 0) {
int vendor_id, product_id;
vendor_id = (number & 0xffff0000) >> 16;
product_id = number & 0x0000ffff;
tmp = riousb_open(vendor_id, product_id, 5000);
} else {
for (p = &player_devices[0] ; p->vendor_id ; p++)
if ((tmp = riousb_open (p->vendor_id, p->product_id, 5000)) != NULL)
break;
}
if (tmp) {
plyr = (struct rioutil_usbdevice *) calloc (1, sizeof (struct rioutil_usbdevice));
if (plyr == NULL) {
riousb_close (tmp);
return errno;
}
ret = riousb_claiminterface (tmp, 0);
if (ret < 0) {
riousb_close (tmp);
return ret;
}
plyr->dev = tmp;
plyr->entry = p;
}
rio->dev = (void *)plyr;
return 0;
}
void usb_setdebug(int i) {
}
/* from librio500-usbdevfs.c */
int bulk (struct usbdevice *dev, int ep, unsigned char *buffer, u_int32_t size){
int transmitted = 0;
void *data;
int len;
int ret;
do {
len = size - transmitted;
data = (unsigned char *)buffer + transmitted;
/* The 15000 is a timeout value */
ret = riousb_bulk_msg (dev, ep, len, data, 15000);
if (ret < 0) {
return ret;
} else {
transmitted += ret;
}
} while (transmitted < size);
return transmitted;
}
int read_bulk (rios_t *rio, unsigned char *buffer, u_int32_t buffer_size){
struct rioutil_usbdevice *dev = (struct rioutil_usbdevice *)rio->dev;
int ret;
struct usbdevice *ud;
int read_ep;
read_ep = dev->entry->iep | 0x80;
ud = (struct usbdevice *)dev->dev;
ret = bulk (ud, read_ep, buffer, buffer_size);
if (ret < 0) {
fprintf(stderr,"read_bulk error\n");
if (errno == ETIMEDOUT) {
rio_log (rio, 0, "Resetting device.\n");
riousb_reset (ud);
}
}
return ret;
}
int write_bulk (rios_t *rio, unsigned char *buffer, u_int32_t size){
struct rioutil_usbdevice *dev = (struct rioutil_usbdevice *)rio->dev;
int i;
int j = 0;
int ret = 0;
int block_size = 4096;
int transmitted = 0;
struct usbdevice *ud;
int write_ep;
write_ep = dev->entry->oep;
ud = (struct usbdevice *)dev->dev;
if (size < block_size)
return bulk(ud, write_ep, buffer, size);
/* need to break up the data, but i am not sure why we are limited to
only 4096 bytes at a time */
for (i = size ; i > 0 ; i -= block_size, j++) {
ret = bulk (ud, write_ep, &buffer[j * block_size], (i < block_size) ? i : block_size);
if (ret < 0) {
rio_log (rio, ret, "write_bulk error\n");
return ret;
} else
transmitted += ret;
}
return transmitted;
}
/* from rio500-usbdevfs.c */
int control_msg (rios_t *rio, u_int8_t direction, u_int8_t request,
u_int16_t value, u_int16_t index, u_int16_t length,
unsigned char *buffer) {
struct rioutil_usbdevice *dev = (struct rioutil_usbdevice *)rio->dev;
int ret;
unsigned char requesttype = 0;
struct usbdevice *ud;
ud = (struct usbdevice *)dev->dev;
if (direction == RIO_DIR_IN)
requesttype = USB_DIR_IN |
USB_TYPE_VENDOR | USB_RECIP_DEVICE;
else
requesttype = USB_DIR_OUT |
USB_TYPE_VENDOR | USB_RECIP_DEVICE;
/* The 5000 is a timeout value */
ret = riousb_control_msg(ud, requesttype, request, value, index, length, buffer, 15000);
if (ret < 0) {
rio_log (rio, ret, "control_msg error. request=0x%x\n",request);
}
return ret;
}
#endif /* WITH_USBDEVFS */
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