From 81a0d9062d5c93490b215d2440bbd7deb3918707 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Sun, 4 Aug 2013 17:43:37 -0700
Subject: [PATCH] ARM: shmobile: bockw: add USB Function support

Bock-W USB1 (CN29) can be USB Host/Func by SW98/SW99 settings.
USB Func will be enabled if CONFIG_USB_RENESAS_USBHS_UDC[_MODULE]
was selected on this patch

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/mach-shmobile/board-bockw.c | 81 ++++++++++++++++++++++++++--
 1 file changed, 78 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-shmobile/board-bockw.c b/arch/arm/mach-shmobile/board-bockw.c
index 7ad868d0a047..330e84c14f8e 100644
--- a/arch/arm/mach-shmobile/board-bockw.c
+++ b/arch/arm/mach-shmobile/board-bockw.c
@@ -32,6 +32,7 @@
 #include <linux/smsc911x.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/flash.h>
+#include <linux/usb/renesas_usbhs.h>
 #include <media/soc_camera.h>
 #include <mach/common.h>
 #include <mach/irqs.h>
@@ -99,6 +100,16 @@ static void __iomem *fpga;
  * # amixer set "LINEOUT Mixer DACL" on
  */
 
+/*
+ * USB
+ *
+ * USB1 (CN29) can be Host/Function
+ *
+ *		Host	Func
+ * SW98		1	2
+ * SW99		1	3
+ */
+
 /* Dummy supplies, where voltage doesn't matter */
 static struct regulator_consumer_supply dummy_supplies[] = {
 	REGULATOR_SUPPLY("vddvario", "smsc911x"),
@@ -117,13 +128,71 @@ static struct resource smsc911x_resources[] __initdata = {
 	DEFINE_RES_IRQ(irq_pin(0)), /* IRQ 0 */
 };
 
+#if IS_ENABLED(CONFIG_USB_RENESAS_USBHS_UDC)
+/*
+ * When USB1 is Func
+ */
+static int usbhsf_get_id(struct platform_device *pdev)
+{
+	return USBHS_GADGET;
+}
+
+#define SUSPMODE	0x102
+static int usbhsf_power_ctrl(struct platform_device *pdev,
+			     void __iomem *base, int enable)
+{
+	enable = !!enable;
+
+	r8a7778_usb_phy_power(enable);
+
+	iowrite16(enable << 14, base + SUSPMODE);
+
+	return 0;
+}
+
+static struct resource usbhsf_resources[] __initdata = {
+	DEFINE_RES_MEM(0xffe60000, 0x110),
+	DEFINE_RES_IRQ(gic_iid(0x4f)),
+};
+
+static struct renesas_usbhs_platform_info usbhs_info __initdata = {
+	.platform_callback = {
+		.get_id		= usbhsf_get_id,
+		.power_ctrl	= usbhsf_power_ctrl,
+	},
+	.driver_param = {
+		.buswait_bwait	= 4,
+	},
+};
+
+#define USB_PHY_SETTING {.port1_func = 1, .ovc_pin[1].active_high = 1,}
+#define USB1_DEVICE	"renesas_usbhs"
+#define ADD_USB_FUNC_DEVICE_IF_POSSIBLE()			\
+	platform_device_register_resndata(			\
+		&platform_bus, "renesas_usbhs", -1,		\
+		usbhsf_resources,				\
+		ARRAY_SIZE(usbhsf_resources),			\
+		&usbhs_info, sizeof(struct renesas_usbhs_platform_info))
+
+#else
+/*
+ * When USB1 is Host
+ */
+#define USB_PHY_SETTING { }
+#define USB1_DEVICE	"ehci-platform"
+#define ADD_USB_FUNC_DEVICE_IF_POSSIBLE()
+
+#endif
+
 /* USB */
 static struct resource usb_phy_resources[] __initdata = {
 	DEFINE_RES_MEM(0xffe70800, 0x100),
 	DEFINE_RES_MEM(0xffe76000, 0x100),
 };
 
-static struct rcar_phy_platform_data usb_phy_platform_data __initdata;
+static struct rcar_phy_platform_data usb_phy_platform_data __initdata =
+	USB_PHY_SETTING;
+
 
 /* SDHI */
 static struct sh_mobile_sdhi_info sdhi0_info __initdata = {
@@ -445,7 +514,7 @@ static const struct pinctrl_map bockw_pinctrl_map[] = {
 	/* USB */
 	PIN_MAP_MUX_GROUP_DEFAULT("ehci-platform", "pfc-r8a7778",
 				  "usb0", "usb0"),
-	PIN_MAP_MUX_GROUP_DEFAULT("ehci-platform", "pfc-r8a7778",
+	PIN_MAP_MUX_GROUP_DEFAULT(USB1_DEVICE, "pfc-r8a7778",
 				  "usb1", "usb1"),
 	/* SDHI0 */
 	PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_sdhi.0", "pfc-r8a7778",
@@ -583,6 +652,12 @@ static void __init bockw_init(void)
 	}
 }
 
+static void __init bockw_init_late(void)
+{
+	r8a7778_init_late();
+	ADD_USB_FUNC_DEVICE_IF_POSSIBLE();
+}
+
 static const char *bockw_boards_compat_dt[] __initdata = {
 	"renesas,bockw",
 	NULL,
@@ -593,5 +668,5 @@ DT_MACHINE_START(BOCKW_DT, "bockw")
 	.init_irq	= r8a7778_init_irq_dt,
 	.init_machine	= bockw_init,
 	.dt_compat	= bockw_boards_compat_dt,
-	.init_late      = r8a7778_init_late,
+	.init_late      = bockw_init_late,
 MACHINE_END