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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/clk.h>
#include <linux/platform_device.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>
static struct clk *usb_host_clock;
static int __devinit ohci_bcm63xx_start(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int ret;
ret = ohci_init(ohci);
if (ret < 0)
return ret;
/* FIXME: autodetected port 2 is shared with USB slave */
ret = ohci_run(ohci);
if (ret < 0) {
err("can't start %s", hcd->self.bus_name);
ohci_stop(hcd);
return ret;
}
return 0;
}
static const struct hc_driver ohci_bcm63xx_hc_driver = {
.description = hcd_name,
.product_desc = "BCM63XX integrated OHCI controller",
.hcd_priv_size = sizeof(struct ohci_hcd),
.irq = ohci_irq,
.flags = HCD_USB11 | HCD_MEMORY,
.start = ohci_bcm63xx_start,
.stop = ohci_stop,
.shutdown = ohci_shutdown,
.urb_enqueue = ohci_urb_enqueue,
.urb_dequeue = ohci_urb_dequeue,
.endpoint_disable = ohci_endpoint_disable,
.get_frame_number = ohci_get_frame,
.hub_status_data = ohci_hub_status_data,
.hub_control = ohci_hub_control,
.start_port_reset = ohci_start_port_reset,
};
static int __devinit ohci_hcd_bcm63xx_drv_probe(struct platform_device *pdev)
{
struct resource *res_mem, *res_irq;
struct usb_hcd *hcd;
struct ohci_hcd *ohci;
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;
if (BCMCPU_IS_6348()) {
struct clk *clk;
/* enable USB host clock */
clk = clk_get(&pdev->dev, "usbh");
if (IS_ERR(clk))
return -ENODEV;
clk_enable(clk);
usb_host_clock = clk;
bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG);
} else if (BCMCPU_IS_6358()) {
reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_REG);
reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK;
reg |= USBH_PRIV_SWAP_OHCI_DATA_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);
} else
return 0;
hcd = usb_create_hcd(&ohci_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;
}
ohci = hcd_to_ohci(hcd);
ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC |
OHCI_QUIRK_FRAME_NO;
ohci_hcd_init(ohci);
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 ohci_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);
if (usb_host_clock) {
clk_disable(usb_host_clock);
clk_put(usb_host_clock);
}
platform_set_drvdata(pdev, NULL);
return 0;
}
static struct platform_driver ohci_hcd_bcm63xx_driver = {
.probe = ohci_hcd_bcm63xx_drv_probe,
.remove = __devexit_p(ohci_hcd_bcm63xx_drv_remove),
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "bcm63xx_ohci",
.owner = THIS_MODULE,
.bus = &platform_bus_type
},
};
MODULE_ALIAS("platform:bcm63xx_ohci");
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