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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>
static int ehci_bcm63xx_setup(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
int retval;
retval = ehci_halt(ehci);
if (retval)
return retval;
retval = ehci_init(hcd);
if (retval)
return retval;
hcd->has_tt = 1;
ehci_reset(ehci);
ehci_port_power(ehci, 0);
return retval;
}
static const struct hc_driver ehci_bcm63xx_hc_driver = {
.description = hcd_name,
.product_desc = "BCM63XX integrated EHCI controller",
.hcd_priv_size = sizeof(struct ehci_hcd),
.irq = ehci_irq,
.flags = HCD_MEMORY | HCD_USB2,
.reset = ehci_bcm63xx_setup,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
.urb_enqueue = ehci_urb_enqueue,
.urb_dequeue = ehci_urb_dequeue,
.endpoint_disable = ehci_endpoint_disable,
.get_frame_number = ehci_get_frame,
.hub_status_data = ehci_hub_status_data,
.hub_control = ehci_hub_control,
.bus_suspend = ehci_bus_suspend,
.bus_resume = ehci_bus_resume,
.relinquish_port = ehci_relinquish_port,
.port_handed_over = ehci_port_handed_over,
};
static int __devinit ehci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
{
struct resource *res_mem, *res_irq;
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
u32 reg;
int ret;
res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res_mem || !res_irq)
return -ENODEV;
reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
reg &= ~USBH_PRIV_SWAP_EHCI_DATA_MASK;
reg |= USBH_PRIV_SWAP_EHCI_ENDN_MASK;
bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_REG);
/* don't ask... */
bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, USBH_PRIV_TEST_REG);
hcd = usb_create_hcd(&ehci_bcm63xx_hc_driver, &pdev->dev, "bcm63xx");
if (!hcd)
return -ENOMEM;
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = res_mem->end - res_mem->start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
pr_debug("request_mem_region failed\n");
ret = -EBUSY;
goto out;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
pr_debug("ioremap failed\n");
ret = -EIO;
goto out1;
}
ehci = hcd_to_ehci(hcd);
ehci->big_endian_mmio = 1;
ehci->big_endian_desc = 0;
ehci->caps = hcd->regs;
ehci->regs = hcd->regs +
HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
ehci->sbrn = 0x20;
ret = usb_add_hcd(hcd, res_irq->start, IRQF_DISABLED);
if (ret)
goto out2;
platform_set_drvdata(pdev, hcd);
return 0;
out2:
iounmap(hcd->regs);
out1:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
out:
usb_put_hcd(hcd);
return ret;
}
static int __devexit ehci_hcd_bcm63xx_drv_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd;
hcd = platform_get_drvdata(pdev);
usb_remove_hcd(hcd);
iounmap(hcd->regs);
usb_put_hcd(hcd);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
platform_set_drvdata(pdev, NULL);
return 0;
}
static struct platform_driver ehci_hcd_bcm63xx_driver = {
.probe = ehci_hcd_bcm63xx_drv_probe,
.remove = __devexit_p(ehci_hcd_bcm63xx_drv_remove),
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "bcm63xx_ehci",
.owner = THIS_MODULE,
.bus = &platform_bus_type
},
};
MODULE_ALIAS("platform:bcm63xx_ehci");
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