[U-Boot] [PATCH v2 2/4] fastboot: call board_usb_init() to enable usb

[Dileep Katta]

g_dnl_gadget_register() fails for dra7xx dwc3 gadget when running
cmd_fastboot. Calling board_usb_init() to fix this.
fastboot command is now added with an optional controller index argument
with default value as 0, to facilitate configurable controller index.

Signed-off-by: Angela Stegmaier <angelabaker at ti.com>
Signed-off-by: Dileep Katta <dileep.katta at linaro.org>
---
Changes in v2:
	- Changed fastboot command to facilitate passing controller index
	- Added board_usb_cleanup()
This patch considers the following change by Inha Song, without which
the build will be broken on BeagleBone Black platform
	https://patchwork.ozlabs.org/patch/430303/
	
 common/cmd_fastboot.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/common/cmd_fastboot.c b/common/cmd_fastboot.c
index 346ab80..9ca4a2f 100644
--- a/common/cmd_fastboot.c
+++ b/common/cmd_fastboot.c
@@ -10,11 +10,19 @@
 #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 ret;
+	int controller_index = 0;
 
+	if (argc == 2) {
+		char *usb_controller = argv[1];
+		controller_index = simple_strtoul(usb_controller, NULL, 0);
+	}
+
+	board_usb_init(controller_index, USB_INIT_DEVICE);
 	g_dnl_clear_detach();
 	ret = g_dnl_register("usb_dnl_fastboot");
 	if (ret)
@@ -36,12 +44,13 @@ static int do_fastboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
 
 	g_dnl_unregister();
 	g_dnl_clear_detach();
+	board_usb_cleanup(controller_index, USB_INIT_DEVICE);
 	return CMD_RET_SUCCESS;
 }
 
 U_BOOT_CMD(
-	fastboot,	1,	0,	do_fastboot,
+	fastboot,	2,	0,	do_fastboot,
 	"use USB Fastboot protocol",
-	"\n"
-	"    - run as a fastboot usb device"
+	"[<USB_controller>]\n"
+	"    - run as a fastboot usb device via <USB_controller>"
 );
-- 
1.8.3.2