-/* am7xxx_mode_switch - a simple usb_mode_switch for am7xxx devices
- *
- * Copyright (C) 2012 Antonio Ospite <ospite@studenti.unina.it>
- *
- * 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdio.h>
-#include <errno.h>
-#include <libusb.h>
-
-#define AM7XXX_STORAGE_VID 0x1de1
-#define AM7XXX_STORAGE_PID 0x1101
-#define AM7XXX_STORAGE_CONFIGURATION 1
-#define AM7XXX_STORAGE_INTERFACE 0
-#define AM7XXX_STORAGE_OUT_EP 0x01
-
-static unsigned char switch_command[] =
- "\x55\x53\x42\x43\x08\x70\x52\x89\x00\x00\x00\x00\x00\x00"
- "\x0c\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
-
-int main(void)
-{
- int ret;
- int transferred;
- libusb_device_handle *usb_device = NULL;
-
- unsigned int len;
-
- ret = libusb_init(NULL);
- if (ret < 0)
- goto out;
-
- libusb_set_debug(NULL, 3);
-
- usb_device = libusb_open_device_with_vid_pid(NULL,
- AM7XXX_STORAGE_VID,
- AM7XXX_STORAGE_PID);
- if (usb_device == NULL) {
- fprintf(stderr, "cannot open the device: %d.\n", errno);
- ret = -errno;
- goto out;
- }
-
- if (libusb_kernel_driver_active(usb_device, AM7XXX_STORAGE_INTERFACE)) {
- ret = libusb_detach_kernel_driver(usb_device,
- AM7XXX_STORAGE_INTERFACE);
- if (ret < 0)
- fprintf(stderr, "Warning: cannot detach kernel driver.\n");
- } else {
- fprintf(stderr, "kernel driver not active.\n");
- }
-
- ret = libusb_set_configuration(usb_device, AM7XXX_STORAGE_CONFIGURATION);
- if (ret < 0) {
- fprintf(stderr, "cannot set configuration.\n");
- goto out_libusb_close;
- }
-
- ret = libusb_claim_interface(usb_device, AM7XXX_STORAGE_INTERFACE);
- if (ret < 0) {
- fprintf(stderr, "cannot claim interface.\n");
- goto out_libusb_close;
- }
-
- len = sizeof(switch_command);
- transferred = 0;
- ret = libusb_bulk_transfer(usb_device, AM7XXX_STORAGE_OUT_EP,
- switch_command, len, &transferred, 0);
- if (ret != 0 || (unsigned int)transferred != len) {
- fprintf(stderr, "ret: %d\ttransferred: %d (expected %u)\n",
- ret, transferred, len);
- goto out_libusb_release_interface;
- }
-
- fprintf(stderr, "OK, command sent!\n");
-
-out_libusb_release_interface:
- libusb_release_interface(usb_device, AM7XXX_STORAGE_INTERFACE);
-out_libusb_close:
- libusb_close(usb_device);
- usb_device = NULL;
-out:
- libusb_exit(NULL);
- return ret;
-}