159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/*
|
|
* 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");
|