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>

1 files changed, 39 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci-uniphier.c b/drivers/usb/host/ehci-uniphier.c
new file mode 100644
index 0000000..77f6c9d
--- /dev/null
+++ b/drivers/usb/host/ehci-uniphier.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2014 Panasonic Corporation
+ *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm/arch/ehci-uniphier.h>
+#include "ehci.h"
+
+/*
+ * Create the appropriate control structures to manage
+ * a new EHCI host controller.
+ */
+int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
+		  struct ehci_hcor **hcor)
+{
+	struct ehci_hccr *cr;
+	struct ehci_hcor *or;
+
+	uniphier_ehci_reset(index, 0);
+
+	cr = (struct ehci_hccr *)(uniphier_ehci_platdata[index].base);
+	or = (void *)cr + HC_LENGTH(ehci_readl(&cr->cr_capbase));
+
+	*hccr = cr;
+	*hcor = or;
+
+	return 0;
+}
+
+int ehci_hcd_stop(int index)
+{
+	uniphier_ehci_reset(index, 1);
+
+	return 0;
+}