From 8ac0167b84ea3ce1f0a4b0c5051ae6d81531a506 Mon Sep 17 00:00:00 2001
From: Chanho Park <chanho61.park@samsung.com>
Date: Mon, 11 Apr 2016 10:10:39 +0900
Subject: [PATCH] board: samsung: artik10: support dwc3 gadget initialization

This patch supports dwc3 usb gadge3 for artik10/smdk5422 board.

Change-Id: I17d5072f99c276aa20daee28a0ba9d78ea09d32f
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
---
 board/samsung/smdk5422/smdk5422.c | 70 +++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/board/samsung/smdk5422/smdk5422.c b/board/samsung/smdk5422/smdk5422.c
index e2c39eb11..49be1e5cb 100644
--- a/board/samsung/smdk5422/smdk5422.c
+++ b/board/samsung/smdk5422/smdk5422.c
@@ -23,6 +23,8 @@
 #include <common.h>
 #include <asm/io.h>
 #include <netdev.h>
+#include <dwc3-uboot.h>
+#include <usb.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/power.h>
@@ -489,3 +491,71 @@ unsigned int get_board_rev(void)
 
 	return board_rev_info;
 }
+
+#ifdef CONFIG_USB_DWC3
+static struct dwc3_device dwc3_device_data = {
+	.maximum_speed = USB_SPEED_SUPER,
+	.base = 0x12400000,
+	.dr_mode = USB_DR_MODE_PERIPHERAL,
+	.index = 0,
+};
+
+int usb_gadget_handle_interrupts(void)
+{
+	dwc3_uboot_handle_interrupt(0);
+	return 0;
+}
+
+int board_usb_cleanup(int index, enum usb_init_type init)
+{
+	return 0;
+}
+
+int board_usb_init(int index, enum usb_init_type init)
+{
+	struct exynos_usb3_phy *phy = (struct exynos_usb3_phy *)
+		samsung_get_base_usb3_phy();
+
+	if (!phy) {
+		error("usb3 phy not supported");
+		return -1;
+	}
+
+	set_usbdrd_phy_ctrl(POWER_USB_DRD_PHY_CTRL_EN);
+	exynos5_usb3_phy_init(phy);
+
+	return dwc3_uboot_init(&dwc3_device_data);
+}
+#endif
+#ifdef CONFIG_SET_DFU_ALT_INFO
+char *get_dfu_alt_system(char *interface, char *devstr)
+{
+	char *info = "Not supported!";
+
+	return getenv("dfu_alt_system");
+}
+
+char *get_dfu_alt_boot(char *interface, char *devstr)
+{
+	char *info = "Not supported!";
+	struct mmc *mmc;
+	char *alt_boot;
+	int dev_num;
+
+	dev_num = simple_strtoul(devstr, NULL, 10);
+
+	mmc = find_mmc_device(dev_num);
+	if (!mmc)
+		return NULL;
+
+	if (mmc_init(mmc))
+		return NULL;
+
+	if (IS_SD(mmc))
+		alt_boot = CONFIG_DFU_ALT_BOOT_SD;
+	else
+		alt_boot = CONFIG_DFU_ALT_BOOT_EMMC;
+
+	return alt_boot;
+}
+#endif
-- 
2.34.1