From f89e8acbc81ee6d9e57f0156c3ee6de44528c8b7 Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Thu, 3 Dec 2020 19:45:02 +0200
Subject: [PATCH] x86: edison: Switch to DM_USB_GADGET

DM is the modern default approach for the drivers in U-Boot.
It also allows to configure code via Device Tree.

Move Intel Edison to use DM_USB_GADGET and drop hard coded values.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
 arch/x86/cpu/tangier/Kconfig |  4 ----
 arch/x86/dts/edison.dts      |  8 ++++++++
 board/intel/edison/edison.c  | 35 -----------------------------------
 configs/edison_defconfig     |  1 +
 4 files changed, 9 insertions(+), 39 deletions(-)

diff --git a/arch/x86/cpu/tangier/Kconfig b/arch/x86/cpu/tangier/Kconfig
index 94d9d74a32..19aaf165d6 100644
--- a/arch/x86/cpu/tangier/Kconfig
+++ b/arch/x86/cpu/tangier/Kconfig
@@ -29,8 +29,4 @@ config SYS_CAR_SIZE
 	  Space in bytes in eSRAM used as Cache-As-RAM (CAR).
 	  Note this size must not exceed eSRAM's total size.
 
-config SYS_USB_OTG_BASE
-	hex
-	default 0xf9100000
-
 endif
diff --git a/arch/x86/dts/edison.dts b/arch/x86/dts/edison.dts
index 600d6d2562..8d245bffc2 100644
--- a/arch/x86/dts/edison.dts
+++ b/arch/x86/dts/edison.dts
@@ -107,6 +107,14 @@
 
 	usb: usb@f9100000 {
 		compatible = "intel,tangier-dwc3";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		dwc3: dwc3 {
+			reg = <0xf9100000 0x100000>;
+			maximum-speed = "high-speed";
+			dr_mode = "peripheral";
+		};
 	};
 
 	watchdog: wdt@0 {
diff --git a/board/intel/edison/edison.c b/board/intel/edison/edison.c
index 652f975515..11e7f74e47 100644
--- a/board/intel/edison/edison.c
+++ b/board/intel/edison/edison.c
@@ -3,15 +3,10 @@
  * Copyright (c) 2017 Intel Corporation
  */
 #include <common.h>
-#include <dwc3-uboot.h>
 #include <env.h>
 #include <init.h>
 #include <mmc.h>
 #include <u-boot/md5.h>
-#include <usb.h>
-#include <watchdog.h>
-
-#include <linux/usb/gadget.h>
 
 #include <asm/cache.h>
 #include <asm/pmu.h>
@@ -27,36 +22,6 @@ int board_early_init_r(void)
 	return 0;
 }
 
-static struct dwc3_device dwc3_device_data = {
-	.maximum_speed = USB_SPEED_HIGH,
-	.base = CONFIG_SYS_USB_OTG_BASE,
-	.dr_mode = USB_DR_MODE_PERIPHERAL,
-	.index = 0,
-};
-
-int usb_gadget_handle_interrupts(int controller_index)
-{
-	dwc3_uboot_handle_interrupt(controller_index);
-	WATCHDOG_RESET();
-	return 0;
-}
-
-int board_usb_init(int index, enum usb_init_type init)
-{
-	if (index == 0 && init == USB_INIT_DEVICE)
-		return dwc3_uboot_init(&dwc3_device_data);
-	return -EINVAL;
-}
-
-int board_usb_cleanup(int index, enum usb_init_type init)
-{
-	if (index == 0 && init == USB_INIT_DEVICE) {
-		dwc3_uboot_exit(index);
-		return 0;
-	}
-	return -EINVAL;
-}
-
 static void assign_serial(void)
 {
 	struct mmc *mmc = find_mmc_device(0);
diff --git a/configs/edison_defconfig b/configs/edison_defconfig
index ab2811eca9..304a172a1b 100644
--- a/configs/edison_defconfig
+++ b/configs/edison_defconfig
@@ -37,6 +37,7 @@ CONFIG_DFU_TIMEOUT=y
 CONFIG_DFU_MMC=y
 CONFIG_DFU_RAM=y
 CONFIG_SUPPORT_EMMC_BOOT=y
+CONFIG_DM_USB_GADGET=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_MANUFACTURER="Intel"
 CONFIG_USB_GADGET_VENDOR_NUM=0x8087