int run_usb_dnl_gadget(int usbctrl_index, char *usb_dnl_gadget) { bool dfu_reset = false; int ret, i = 0; ret = board_usb_init(usbctrl_index, USB_INIT_DEVICE); if (ret) { pr_err("board usb init failed\n"); return CMD_RET_FAILURE; } g_dnl_clear_detach(); ret = g_dnl_register(usb_dnl_gadget); if (ret) { pr_err("g_dnl_register failed"); return CMD_RET_FAILURE; } while (1) { if (g_dnl_detach()) { /* * Check if USB bus reset is performed after detach, * which indicates that -R switch has been passed to * dfu-util. In this case reboot the device */ if (dfu_usb_get_reset()) { dfu_reset = true; goto exit; } /* * This extra number of usb_gadget_handle_interrupts() * calls is necessary to assure correct transmission * completion with dfu-util */ if (++i == 10000) goto exit; } if (ctrlc()) goto exit; if (dfu_get_defer_flush()) { /* * Call to usb_gadget_handle_interrupts() is necessary * to act on ZLP OUT transaction from HOST PC after * transmitting the whole file. * * If this ZLP OUT packet is NAK'ed, the HOST libusb * function fails after timeout (by default it is set to * 5 seconds). In such situation the dfu-util program * exits with error message. */ usb_gadget_handle_interrupts(usbctrl_index); ret = dfu_flush(dfu_get_defer_flush(), NULL, 0, 0); dfu_set_defer_flush(NULL); if (ret) { pr_err("Deferred dfu_flush() failed!"); goto exit; } } WATCHDOG_RESET(); usb_gadget_handle_interrupts(usbctrl_index); } exit: g_dnl_unregister(); board_usb_cleanup(usbctrl_index, USB_INIT_DEVICE); if (dfu_reset) do_reset(NULL, 0, 0, NULL); g_dnl_clear_detach(); return ret; }
static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { bool dfu_reset = false; if (argc < 4) return CMD_RET_USAGE; char *usb_controller = argv[1]; char *interface = argv[2]; char *devstring = argv[3]; int ret, i = 0; ret = dfu_init_env_entities(interface, devstring); if (ret) goto done; ret = CMD_RET_SUCCESS; if (argc > 4 && strcmp(argv[4], "list") == 0) { dfu_show_entities(); goto done; } int controller_index = simple_strtoul(usb_controller, NULL, 0); board_usb_init(controller_index, USB_INIT_DEVICE); g_dnl_clear_detach(); g_dnl_register("usb_dnl_dfu"); while (1) { if (g_dnl_detach()) { /* * Check if USB bus reset is performed after detach, * which indicates that -R switch has been passed to * dfu-util. In this case reboot the device */ if (dfu_usb_get_reset()) { dfu_reset = true; goto exit; } /* * This extra number of usb_gadget_handle_interrupts() * calls is necessary to assure correct transmission * completion with dfu-util */ if (++i == 10000) goto exit; } if (ctrlc()) goto exit; WATCHDOG_RESET(); usb_gadget_handle_interrupts(controller_index); } exit: g_dnl_unregister(); board_usb_cleanup(controller_index, USB_INIT_DEVICE); done: dfu_free_entities(); if (dfu_reset) run_command("reset", 0); g_dnl_clear_detach(); return ret; }