usb: UniPhier: add UniPhier on-chip EHCI host driver support

Support EHCI host driver used on Panasonic UniPhier platform.
Since Device Tree is not supported on UniPhier yet, the base address
of USB cores are passed from board files (platdevice.c).

TODO for me:
Move the base address to device trees.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Marek Vasut <marex@denx.de>

5 files changed, 71 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c b/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c
index 0047223..62f5b01 100644
--- a/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c
+++ b/arch/arm/cpu/armv7/uniphier/ph1-ld4/platdevice.c
@@ -13,3 +13,16 @@ SERIAL_DEVICE(0, 0x54006800, UART_MASTER_CLK)
 SERIAL_DEVICE(1, 0x54006900, UART_MASTER_CLK)
 SERIAL_DEVICE(2, 0x54006a00, UART_MASTER_CLK)
 SERIAL_DEVICE(3, 0x54006b00, UART_MASTER_CLK)
+
+/* USB : TODO for Masahiro Yamada: move base address to Device Tree */
+struct uniphier_ehci_platform_data uniphier_ehci_platdata[] = {
+	{
+		.base = 0x5a800100,
+	},
+	{
+		.base = 0x5a810100,
+	},
+	{
+		.base = 0x5a820100,
+	},
+};
diff --git a/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c b/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c
index 6da921e..1843d04 100644
--- a/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c
+++ b/arch/arm/cpu/armv7/uniphier/ph1-pro4/platdevice.c
@@ -13,3 +13,13 @@ SERIAL_DEVICE(0, 0x54006800, UART_MASTER_CLK)
 SERIAL_DEVICE(1, 0x54006900, UART_MASTER_CLK)
 SERIAL_DEVICE(2, 0x54006a00, UART_MASTER_CLK)
 SERIAL_DEVICE(3, 0x54006b00, UART_MASTER_CLK)
+
+/* USB : TODO for Masahiro Yamada: move base address to Device Tree */
+struct uniphier_ehci_platform_data uniphier_ehci_platdata[] = {
+	{
+		.base = 0x5a800100,
+	},
+	{
+		.base = 0x5a810100,
+	},
+};
diff --git a/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c b/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c
index 59d054a..72ec599 100644
--- a/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c
+++ b/arch/arm/cpu/armv7/uniphier/ph1-sld8/platdevice.c
@@ -13,3 +13,16 @@ SERIAL_DEVICE(0, 0x54006800, UART_MASTER_CLK)
 SERIAL_DEVICE(1, 0x54006900, UART_MASTER_CLK)
 SERIAL_DEVICE(2, 0x54006a00, UART_MASTER_CLK)
 SERIAL_DEVICE(3, 0x54006b00, UART_MASTER_CLK)
+
+/* USB : TODO for Masahiro Yamada: move base address to Device Tree */
+struct uniphier_ehci_platform_data uniphier_ehci_platdata[] = {
+	{
+		.base = 0x5a800100,
+	},
+	{
+		.base = 0x5a810100,
+	},
+	{
+		.base = 0x5a820100,
+	},
+};
diff --git a/arch/arm/include/asm/arch-uniphier/ehci-uniphier.h b/arch/arm/include/asm/arch-uniphier/ehci-uniphier.h
new file mode 100644
index 0000000..e9c5fb4
--- /dev/null
+++ b/arch/arm/include/asm/arch-uniphier/ehci-uniphier.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2014 Panasonic Corporation
+ *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __PLAT_UNIPHIER_EHCI_H
+#define __PLAT_UNIPHIER_EHCI_H
+
+#include <linux/types.h>
+#include <asm/io.h>
+#include "mio-regs.h"
+
+struct uniphier_ehci_platform_data {
+	unsigned long base;
+};
+
+extern struct uniphier_ehci_platform_data uniphier_ehci_platdata[];
+
+static inline void uniphier_ehci_reset(int index, int on)
+{
+	u32 tmp;
+
+	tmp = readl(MIO_USB_RSTCTRL(index));
+	if (on)
+		tmp &= ~MIO_USB_RSTCTRL_XRST;
+	else
+		tmp |= MIO_USB_RSTCTRL_XRST;
+	writel(tmp, MIO_USB_RSTCTRL(index));
+}
+
+#endif /* __PLAT_UNIPHIER_EHCI_H */
diff --git a/arch/arm/include/asm/arch-uniphier/platdevice.h b/arch/arm/include/asm/arch-uniphier/platdevice.h
index cdf7d13..62a5126 100644
--- a/arch/arm/include/asm/arch-uniphier/platdevice.h
+++ b/arch/arm/include/asm/arch-uniphier/platdevice.h
@@ -21,4 +21,6 @@ U_BOOT_DEVICE(serial##n) = {						\
 	.platdata = &serial_device##n					\
 };
 
+#include <asm/arch/ehci-uniphier.h>
+
 #endif /* ARCH_PLATDEVICE_H */