usb: board_usb_init and board_usb_cleanup calls in the fastboot command

Each USB download function command calls board_usb_init before registering the
USB gadget and board_usb_cleanup after de-registering it. On devices currently
using fasboot, musb-new is usually initialized earlier, but some other boards
might need the board_usb_init call to properly initialize musb-new.

This requires adding an argument (the USB controller index) to the fastboot
command, as it is currently done with other USB download gadget functions.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>

Test HW: Odroid_XU3 (Exynos5422), trats (Exynos4210)

common/cmd_fastboot.c

@@ -10,11 +10,26 @@
 #include <common.h>
 #include <command.h>
 #include <g_dnl.h>
+#include <usb.h>
 
 static int do_fastboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 {
+	int controller_index;
+	char *usb_controller;
 	int ret;
 
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	usb_controller = argv[1];
+	controller_index = simple_strtoul(usb_controller, NULL, 0);
+
+	ret = board_usb_init(controller_index, USB_INIT_DEVICE);
+	if (ret) {
+		error("USB init failed: %d", ret);
+		return CMD_RET_FAILURE;
+	}
+
 	g_dnl_clear_detach();
 	ret = g_dnl_register("usb_dnl_fastboot");
 	if (ret)
@@ -23,9 +38,8 @@ static int do_fastboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 	if (!g_dnl_board_usb_cable_connected()) {
 		puts("\rUSB cable not detected.\n" \
 		     "Command exit.\n");
-		g_dnl_unregister();
-		g_dnl_clear_detach();
-		return CMD_RET_FAILURE;
+		ret = CMD_RET_FAILURE;
+		goto exit;
 	}
 
 	while (1) {
@@ -36,14 +50,19 @@ static int do_fastboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 		usb_gadget_handle_interrupts(0);
 	}
 
+	ret = CMD_RET_SUCCESS;
+
+exit:
 	g_dnl_unregister();
 	g_dnl_clear_detach();
-	return CMD_RET_SUCCESS;
+	board_usb_cleanup(controller_index, USB_INIT_DEVICE);
+
+	return ret;
 }
 
 U_BOOT_CMD(
-	fastboot,	1,	0,	do_fastboot,
+	fastboot, 2, 1, do_fastboot,
 	"use USB Fastboot protocol",
-	"\n"
+	"<USB_controller>\n"
 	"    - run as a fastboot usb device"
 );

include/configs/ti_omap5_common.h

@@ -135,7 +135,7 @@
 	"if test ${dofastboot} -eq 1; then " \
 		"echo Boot fastboot requested, resetting dofastboot ...;" \
 		"setenv dofastboot 0; saveenv;" \
-		"echo Booting into fastboot ...; fastboot;" \
+		"echo Booting into fastboot ...; fastboot 0;" \
 	"fi;" \
 	"run findfdt; " \
 	"run mmcboot;" \