blob: d8cab63eda616eb271aee52fc4cb9297f857a438 [file] [log] [blame]
/*
* Copyright (C) 2009 - 2014 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 <linux/dma-mapping.h>
#include <linux/hrtimer.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/usb/ohci_pdriver.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include <linux/clk.h>
#include <linux/of.h>
#include "ohci.h"
#include "usb-brcm.h"
#define BRCM_DRIVER_DESC "OHCI BRCM driver"
static const char hcd_name[] = "ohci-brcm";
struct brcm_hcd {
struct clk *hcd_clk;
};
static int ohci_brcm_reset(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
ohci->flags |= OHCI_QUIRK_BE_MMIO;
return ohci_setup(hcd);
}
static struct hc_driver __read_mostly ohci_brcm_hc_driver;
static const struct ohci_driver_overrides brcm_overrides __initconst = {
.product_desc = "BRCM OHCI controller",
.reset = ohci_brcm_reset,
.extra_priv_size = sizeof(struct brcm_hcd),
};
static int ohci_brcm_probe(struct platform_device *dev)
{
int err;
struct usb_hcd *hcd;
struct brcm_hcd *brcm_hcd_ptr;
struct clk *usb_clk;
err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
if (err)
return err;
err = brcm_usb_probe(dev, &ohci_brcm_hc_driver, &hcd, &usb_clk);
if (!err) {
brcm_hcd_ptr = (struct brcm_hcd *)hcd_to_ohci(hcd)->priv;
brcm_hcd_ptr->hcd_clk = usb_clk;
}
return err;
}
static int ohci_brcm_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
struct brcm_hcd *brcm_hcd_ptr =
(struct brcm_hcd *)hcd_to_ohci(hcd)->priv;
return brcm_usb_remove(dev, brcm_hcd_ptr->hcd_clk);
}
#ifdef CONFIG_PM_SLEEP
static int ohci_brcm_suspend(struct device *dev)
{
int ret;
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct brcm_hcd *brcm_hcd_ptr =
(struct brcm_hcd *)hcd_to_ohci(hcd)->priv;
bool do_wakeup = device_may_wakeup(dev);
ret = ohci_suspend(hcd, do_wakeup);
clk_disable(brcm_hcd_ptr->hcd_clk);
return ret;
}
static int ohci_brcm_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct brcm_hcd *brcm_hcd_ptr =
(struct brcm_hcd *)hcd_to_ohci(hcd)->priv;
int err;
err = clk_enable(brcm_hcd_ptr->hcd_clk);
if (err)
return err;
ohci_resume(hcd, false);
return 0;
}
#endif /* CONFIG_PM_SLEEP */
static SIMPLE_DEV_PM_OPS(ohci_brcm_pm_ops, ohci_brcm_suspend,
ohci_brcm_resume);
#ifdef CONFIG_OF
static const struct of_device_id brcm_ohci_of_match[] = {
{ .compatible = "brcm,ohci-brcm", },
{}
};
MODULE_DEVICE_TABLE(of, brcm_ohci_of_match);
#endif /* CONFIG_OF */
static struct platform_driver ohci_brcm_driver = {
.probe = ohci_brcm_probe,
.remove = ohci_brcm_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.owner = THIS_MODULE,
.name = "ohci-brcm",
.pm = &ohci_brcm_pm_ops,
.of_match_table = of_match_ptr(brcm_ohci_of_match),
}
};
static int __init ohci_brcm_init(void)
{
if (usb_disabled())
return -ENODEV;
pr_info("%s: " BRCM_DRIVER_DESC "\n", hcd_name);
ohci_init_driver(&ohci_brcm_hc_driver, &brcm_overrides);
return platform_driver_register(&ohci_brcm_driver);
}
module_init(ohci_brcm_init);
static void __exit ohci_brcm_cleanup(void)
{
platform_driver_unregister(&ohci_brcm_driver);
}
module_exit(ohci_brcm_cleanup);
MODULE_DESCRIPTION(BRCM_DRIVER_DESC);
MODULE_AUTHOR("Al Cooper");
MODULE_LICENSE("GPL");