[RFC 8/9] MIPS: tplink-mr3020: select big-endian EHCI support

[Antony Pavlov]

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 arch/mips/boards/tplink-mr3020/board.c | 55 ++++++++++++++++++++++++++++++++++
 arch/mips/mach-ath79/Kconfig           |  4 +++
 2 files changed, 59 insertions(+)

diff --git a/arch/mips/boards/tplink-mr3020/board.c b/arch/mips/boards/tplink-mr3020/board.c
index 318998c..032ad7d 100644
--- a/arch/mips/boards/tplink-mr3020/board.c
+++ b/arch/mips/boards/tplink-mr3020/board.c
@@ -25,3 +25,58 @@ static int model_hostname_init(void)
 	return 0;
 }
 postcore_initcall(model_hostname_init);
+
+#include <asm/addrspace.h>
+#include <mach/ath79.h>
+#include <usb/ehci.h>
+
+#define AR933X_RESET_REG_RESET_MODULE           0x1c
+#define AR933X_RESET_USB_HOST           BIT(5)
+#define AR933X_RESET_USB_PHY            BIT(4)
+#define AR933X_RESET_USBSUS_OVERRIDE    BIT(3)
+
+#define AR933X_EHCI_BASE	0x1b000000
+#define AR933X_EHCI_SIZE	0x1000
+
+static void ath79_device_reset_set(u32 mask)
+{
+	u32 reg;
+	u32 t;
+
+	reg = AR933X_RESET_REG_RESET_MODULE;
+	t = ath79_reset_rr(reg);
+	ath79_reset_wr(reg, t | mask);
+}
+
+static void ath79_device_reset_clear(u32 mask)
+{
+	u32 reg;
+	u32 t;
+
+	reg = AR933X_RESET_REG_RESET_MODULE;
+	t = ath79_reset_rr(reg);
+	ath79_reset_wr(reg, t & ~mask);
+}
+
+static struct ehci_platform_data ehci_pdata = {
+	.flags = EHCI_HAS_TT | EHCI_BE_MMIO,
+};
+
+static int ehci_init(void)
+{
+	ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
+	mdelay(10); mdelay(10); mdelay(10);
+
+	ath79_device_reset_clear(AR933X_RESET_USB_HOST);
+	mdelay(10); mdelay(10); mdelay(10);
+
+	ath79_device_reset_clear(AR933X_RESET_USB_PHY);
+	mdelay(10); mdelay(10); mdelay(10);
+
+	add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC,
+			KSEG1ADDR(AR933X_EHCI_BASE),
+			&ehci_pdata);
+
+	return 0;
+}
+device_initcall(ehci_init);
diff --git a/arch/mips/mach-ath79/Kconfig b/arch/mips/mach-ath79/Kconfig
index f730b37..24ec078 100644
--- a/arch/mips/mach-ath79/Kconfig
+++ b/arch/mips/mach-ath79/Kconfig
@@ -12,6 +12,10 @@ config BOARD_TPLINK_MR3020
 	select HAVE_PBL_IMAGE
 	select HAVE_IMAGE_COMPRESSION
 	select HAS_NMON
+	select USB_HOST
+	select HAS_DMA
+	select USB_EHCI
+	select USB_EHCI_BIG_ENDIAN_MMIO
 
 endchoice
 
-- 
2.5.0