From e66782e6eae2b918bffd56d7146895f8ad1c00dc Mon Sep 17 00:00:00 2001
From: Paul Kocialkowski <contact@paulk.fr>
Date: Sat, 27 Feb 2016 19:19:06 +0100
Subject: [PATCH] kc1: MUSB USB controller and fastboot USB gadget support

This adds support for the MUSB USB dual-role controller in peripheral mode,
with configuration options for the fastboot USB gadget.

At this point, flashing the internal eMMC is support.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
---
 board/amazon/kc1/kc1.c | 27 +++++++++++++++++++++++++++
 board/amazon/kc1/kc1.h |  4 ++++
 configs/kc1_defconfig  |  2 ++
 include/configs/kc1.h  | 35 +++++++++++++++++++++++++++++++++++
 4 files changed, 68 insertions(+)

diff --git a/board/amazon/kc1/kc1.c b/board/amazon/kc1/kc1.c
index a189bb2c08..29d9c648c7 100644
--- a/board/amazon/kc1/kc1.c
+++ b/board/amazon/kc1/kc1.c
@@ -8,6 +8,9 @@
 
 #include <config.h>
 #include <common.h>
+#include <linux/ctype.h>
+#include <linux/usb/musb.h>
+#include <asm/omap_musb.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/mmc_host_def.h>
 #include <asm/gpio.h>
@@ -21,6 +24,26 @@ const struct omap_sysinfo sysinfo = {
 	.board_string = "kc1"
 };
 
+static struct musb_hdrc_config musb_config = {
+	.multipoint = 1,
+	.dyn_fifo = 1,
+	.num_eps = 16,
+	.ram_bits = 12
+};
+
+static struct omap_musb_board_data musb_board_data = {
+	.interface_type	= MUSB_INTERFACE_UTMI,
+};
+
+static struct musb_hdrc_platform_data musb_platform_data = {
+	.mode = MUSB_PERIPHERAL,
+	.config = &musb_config,
+	.power = 100,
+	.platform_ops = &omap2430_ops,
+	.board_data = &musb_board_data,
+};
+
+
 void set_muxconf_regs(void)
 {
 	do_set_mux((*ctrl)->control_padconf_core_base, core_padconf_array,
@@ -66,6 +89,10 @@ int misc_init_r(void)
 
 	omap_die_id_serial();
 
+	/* MUSB */
+
+	musb_register(&musb_platform_data, &musb_board_data, (void *)MUSB_BASE);
+
 	return 0;
 }
 
diff --git a/board/amazon/kc1/kc1.h b/board/amazon/kc1/kc1.h
index 886bd38eed..67d008f05d 100644
--- a/board/amazon/kc1/kc1.h
+++ b/board/amazon/kc1/kc1.h
@@ -87,6 +87,10 @@ const struct pad_conf_entry core_padconf_array[] = {
 	{ UNIPRO_RY1,		(IEN  | DIS | M3) }, /* gpio_178 */
 	{ UNIPRO_RX2,		(IDIS | DIS | M7) }, /* safe_mode */
 	{ UNIPRO_RY2,		(IDIS | DIS | M7) }, /* safe_mode */
+	/* USBA0_OTG */
+	{ USBA0_OTG_CE,		(IDIS | PTD | M0) }, /* usba0_otg_ce */
+	{ USBA0_OTG_DP,		(IEN  | DIS | M0) }, /* usba0_otg_dp */
+	{ USBA0_OTG_DM,		(IEN  | DIS | M0) }, /* usba0_otg_dm */
 };
 
 #endif
diff --git a/configs/kc1_defconfig b/configs/kc1_defconfig
index c9cadd91e7..1e5c9185c1 100644
--- a/configs/kc1_defconfig
+++ b/configs/kc1_defconfig
@@ -10,3 +10,5 @@ CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NFS is not set
 CONFIG_SYS_NS16550=y
+CONFIG_USB=y
+CONFIG_USB_MUSB_GADGET=y
diff --git a/include/configs/kc1.h b/include/configs/kc1.h
index 281041dc31..185e8de319 100644
--- a/include/configs/kc1.h
+++ b/include/configs/kc1.h
@@ -171,6 +171,41 @@
 #define CONFIG_SYS_BAUDRATE_TABLE	{ 4800, 9600, 19200, 38400, 57600, \
 					  115200 }
 
+/*
+ * USB gadget
+ */
+
+#define CONFIG_USB_MUSB_PIO_ONLY
+#define CONFIG_USB_MUSB_OMAP2PLUS
+
+#define CONFIG_USB_GADGET
+#define CONFIG_USB_GADGET_DUALSPEED
+#define CONFIG_USB_GADGET_VBUS_DRAW	0
+
+/*
+ * Download
+ */
+
+#define CONFIG_USB_GADGET_DOWNLOAD
+
+#define CONFIG_G_DNL_VENDOR_NUM		0x0451
+#define CONFIG_G_DNL_PRODUCT_NUM	0xd022
+#define CONFIG_G_DNL_MANUFACTURER	"Texas Instruments"
+
+/*
+ * Fastboot
+ */
+
+#define CONFIG_USB_FUNCTION_FASTBOOT
+
+#define CONFIG_FASTBOOT_BUF_ADDR	CONFIG_SYS_LOAD_ADDR
+#define CONFIG_FASTBOOT_BUF_SIZE	0x2000000
+
+#define CONFIG_FASTBOOT_FLASH
+#define CONFIG_FASTBOOT_FLASH_MMC_DEV	0
+
+#define CONFIG_CMD_FASTBOOT
+
 /*
  * Environment
  */