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/*
* (C) Copyright 2010 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*
* 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 resource *iores;
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;
iores = dev_request_mem_resource(dev, 0);
if (IS_ERR(iores))
return PTR_ERR(iores);
data.hccr = IOMEM(iores->start);
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,
};
device_platform_driver(atmel_ehci_driver);
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