Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
---
drivers/usb/host/Kconfig | 5 +++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-atmel.c | 96 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 102 insertions(+)
create mode 100644 drivers/usb/host/ehci-atmel.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 439d8eb..3927d3a 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -6,6 +6,11 @@ config USB_EHCI_OMAP
depends on USB_TWL4030
bool "OMAP EHCI driver"
+config USB_EHCI_ATMEL
+ depends on ARCH_AT91
+ depends on USB_EHCI
+ bool "Atmel EHCI driver"
+
config USB_OHCI
bool "OHCI driver"
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 00f5e24..156fc7f 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -1,4 +1,5 @@
obj-$(CONFIG_USB_EHCI) += ehci-hcd.o
obj-$(CONFIG_USB_EHCI_OMAP) += ehci-omap.o
+obj-$(CONFIG_USB_EHCI_ATMEL) += ehci-atmel.o
obj-$(CONFIG_USB_OHCI) += ohci-hcd.o
obj-$(CONFIG_USB_OHCI_AT91) += ohci-at91.o
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
new file mode 100644
index 0000000..5957b8e
--- /dev/null
+++ b/drivers/usb/host/ehci-atmel.c
@@ -0,0 +1,96 @@
+/*
+ * (C) Copyright 2010 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <driver.h>
+#include <init.h>
+#include <usb/usb.h>
+#include <usb/usb_defs.h>
+#include <usb/ehci.h>
+#include <errno.h>
+#include <io.h>
+
+#include "ehci.h"
+
+/* interface and function clocks; sometimes also an AHB clock */
+static struct clk *iclk, *fclk;
+
+static void atmel_start_clock(void)
+{
+ clk_enable(iclk);
+ clk_enable(fclk);
+}
+
+static void atmel_stop_clock(void)
+{
+ clk_disable(fclk);
+ clk_disable(iclk);
+}
+
+static int atmel_ehci_probe(struct device_d *dev)
+{
+ struct ehci_data data;
+
+ iclk = clk_get(dev, "ehci_clk");
+ if (IS_ERR(iclk)) {
+ dev_err(dev, "Error getting interface clock\n");
+ return -ENOENT;
+ }
+
+ fclk = clk_get(dev, "uhpck");
+ if (IS_ERR(fclk)) {
+ dev_err(dev, "Error getting function clock\n");
+ return -ENOENT;
+ }
+
+ /*
+ * Start the USB clocks.
+ */
+ atmel_start_clock();
+
+ data.flags = 0;
+
+ data.hccr = dev_request_mem_region(dev, 0);
+
+ ehci_register(dev, &data);
+
+ return 0;
+}
+
+static void atmel_ehci_remove(struct device_d *dev)
+{
+ /*
+ * Stop the USB clocks.
+ */
+ atmel_stop_clock();
+}
+
+static struct driver_d atmel_ehci_driver = {
+ .name = "atmel-ehci",
+ .probe = atmel_ehci_probe,
+ .remove = atmel_ehci_remove,
+};
+
+static int atmel_ehci_init(void)
+{
+ platform_driver_register(&atmel_ehci_driver);
+ return 0;
+}
+device_initcall(atmel_ehci_init);
--
1.7.10.4
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