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