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@@ -0,0 +1,74 @@
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+/*
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+ * Copyright (C) 2017 Eddie Cai <eddie.cai.linux@gmail.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+
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+#include <common.h>
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+#include <command.h>
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+#include <console.h>
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+#include <g_dnl.h>
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+#include <usb.h>
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+#include <asm/arch/f_rockusb.h>
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+
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+static int do_rockusb(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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+{
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+ int controller_index, dev_index;
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+ char *usb_controller;
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+ char *devtype;
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+ char *devnum;
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+ int ret;
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+
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+ if (argc < 2)
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+ return CMD_RET_USAGE;
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+
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+ usb_controller = argv[1];
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+ controller_index = simple_strtoul(usb_controller, NULL, 0);
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+
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+ if (argc >= 4) {
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+ devtype = argv[2];
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+ devnum = argv[3];
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+ } else {
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+ return CMD_RET_USAGE;
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+ }
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+ dev_index = simple_strtoul(devnum, NULL, 0);
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+ rockusb_dev_init(devtype, dev_index);
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+
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+ ret = board_usb_init(controller_index, USB_INIT_DEVICE);
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+ if (ret) {
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+ printf("USB init failed: %d\n", ret);
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+ return CMD_RET_FAILURE;
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+ }
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+
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+ g_dnl_clear_detach();
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+ ret = g_dnl_register("usb_dnl_rockusb");
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+ if (ret)
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+ return CMD_RET_FAILURE;
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+
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+ if (!g_dnl_board_usb_cable_connected()) {
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+ puts("\rUSB cable not detected, Command exit.\n");
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+ ret = CMD_RET_FAILURE;
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+ goto exit;
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+ }
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+
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+ while (1) {
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+ if (g_dnl_detach())
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+ break;
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+ if (ctrlc())
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+ break;
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+ usb_gadget_handle_interrupts(controller_index);
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+ }
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+ ret = CMD_RET_SUCCESS;
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+
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+exit:
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+ g_dnl_unregister();
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+ g_dnl_clear_detach();
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+ board_usb_cleanup(controller_index, USB_INIT_DEVICE);
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+
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+ return ret;
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+}
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+
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+U_BOOT_CMD(rockusb, 4, 1, do_rockusb,
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+ "use the rockusb protocol",
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+ "<USB_controller> <devtype> <dev[:part]> e.g. rockusb 0 mmc 0\n"
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+);
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