backported ixp4xx ehci driver
SVN-Revision: 10946
This commit is contained in:
Imre Kaloz
parent
3f788c241b
commit
0d64017ecf
1 changed files with 215 additions and 0 deletions
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@ -0,0 +1,215 @@
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diff -Nur linux-2.6.24.2/drivers/usb/host/ehci.h linux-2.6.24.2-owrt/drivers/usb/host/ehci.h
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--- linux-2.6.24.2/drivers/usb/host/ehci.h 2008-02-11 06:51:11.000000000 +0100
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+++ linux-2.6.24.2-owrt/drivers/usb/host/ehci.h 2008-04-22 12:58:42.000000000 +0200
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@@ -730,6 +730,11 @@
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#define writel_be(val, addr) out_be32((__force unsigned *)addr, val)
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#endif
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+#if defined(CONFIG_ARM) && defined(CONFIG_ARCH_IXP4XX)
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+#define readl_be(addr) __raw_readl((__force unsigned *)addr)
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+#define writel_be(val, addr) __raw_writel(val, (__force unsigned *)addr)
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+#endif
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+
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static inline unsigned int ehci_readl(const struct ehci_hcd *ehci,
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__u32 __iomem * regs)
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{
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diff -Nur linux-2.6.24.2/drivers/usb/host/ehci-hcd.c linux-2.6.24.2-owrt/drivers/usb/host/ehci-hcd.c
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--- linux-2.6.24.2/drivers/usb/host/ehci-hcd.c 2008-02-11 06:51:11.000000000 +0100
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+++ linux-2.6.24.2-owrt/drivers/usb/host/ehci-hcd.c 2008-04-22 12:58:42.000000000 +0200
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@@ -964,6 +964,11 @@
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#define PLATFORM_DRIVER ehci_ppc_soc_driver
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#endif
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+#ifdef CONFIG_ARCH_IXP4XX
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+#include "ehci-ixp4xx.c"
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+#define PLATFORM_DRIVER ixp4xx_ehci_driver
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+#endif
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+
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#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
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!defined(PS3_SYSTEM_BUS_DRIVER)
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#error "missing bus glue for ehci-hcd"
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diff -Nur linux-2.6.24.2/drivers/usb/host/ehci-ixp4xx.c linux-2.6.24.2-owrt/drivers/usb/host/ehci-ixp4xx.c
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--- linux-2.6.24.2/drivers/usb/host/ehci-ixp4xx.c 1970-01-01 01:00:00.000000000 +0100
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+++ linux-2.6.24.2-owrt/drivers/usb/host/ehci-ixp4xx.c 2008-04-22 12:58:42.000000000 +0200
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@@ -0,0 +1,152 @@
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+/*
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+ * IXP4XX EHCI Host Controller Driver
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+ *
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+ * Author: Vladimir Barinov <vbarinov@ru.mvista.com>
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+ *
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+ * Based on "ehci-fsl.c" by Randy Vinson <rvinson@mvista.com>
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+ *
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+ * 2007 (c) MontaVista Software, Inc. This file is licensed under
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+ * the terms of the GNU General Public License version 2. This program
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+ * is licensed "as is" without any warranty of any kind, whether express
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+ * or implied.
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+ */
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+
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+#include <linux/platform_device.h>
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+
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+static int ixp4xx_ehci_init(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 = 0;
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+
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+ ehci->big_endian_desc = 1;
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+ ehci->big_endian_mmio = 1;
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+
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+ ehci->caps = hcd->regs + 0x100;
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+ ehci->regs = hcd->regs + 0x100
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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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+
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+ ehci->is_tdi_rh_tt = 1;
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+ ehci_reset(ehci);
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+
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+ retval = ehci_init(hcd);
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+ if (retval)
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+ return retval;
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+
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+ ehci_port_power(ehci, 0);
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+
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+ return retval;
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+}
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+
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+static const struct hc_driver ixp4xx_ehci_hc_driver = {
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+ .description = hcd_name,
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+ .product_desc = "IXP4XX EHCI Host 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 = ixp4xx_ehci_init,
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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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+#if defined(CONFIG_PM)
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+ .bus_suspend = ehci_bus_suspend,
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+ .bus_resume = ehci_bus_resume,
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+#endif
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+};
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+
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+static int ixp4xx_ehci_probe(struct platform_device *pdev)
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+{
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+ struct usb_hcd *hcd;
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+ const struct hc_driver *driver = &ixp4xx_ehci_hc_driver;
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+ struct resource *res;
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+ int irq;
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+ int retval;
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+
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+ if (usb_disabled())
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+ return -ENODEV;
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+
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+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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+ if (!res) {
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+ dev_err(&pdev->dev,
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+ "Found HC with no IRQ. Check %s setup!\n",
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+ pdev->dev.bus_id);
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+ return -ENODEV;
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+ }
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+ irq = res->start;
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+
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+ hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
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+ if (!hcd) {
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+ retval = -ENOMEM;
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+ goto fail_create_hcd;
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+ }
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+
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+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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+ if (!res) {
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+ dev_err(&pdev->dev,
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+ "Found HC with no register addr. Check %s setup!\n",
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+ pdev->dev.bus_id);
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+ retval = -ENODEV;
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+ goto fail_request_resource;
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+ }
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+ hcd->rsrc_start = res->start;
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+ hcd->rsrc_len = res->end - res->start + 1;
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+
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+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
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+ driver->description)) {
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+ dev_dbg(&pdev->dev, "controller already in use\n");
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+ retval = -EBUSY;
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+ goto fail_request_resource;
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+ }
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+
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+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
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+ if (hcd->regs == NULL) {
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+ dev_dbg(&pdev->dev, "error mapping memory\n");
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+ retval = -EFAULT;
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+ goto fail_ioremap;
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+ }
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+
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+ retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
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+ if (retval)
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+ goto fail_add_hcd;
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+
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+ return retval;
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+
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+fail_add_hcd:
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+ iounmap(hcd->regs);
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+fail_ioremap:
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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+fail_request_resource:
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+ usb_put_hcd(hcd);
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+fail_create_hcd:
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+ dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval);
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+ return retval;
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+}
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+
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+static int ixp4xx_ehci_remove(struct platform_device *pdev)
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+{
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+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
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+
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+ usb_remove_hcd(hcd);
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+ iounmap(hcd->regs);
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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+ usb_put_hcd(hcd);
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+
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+ return 0;
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+}
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+
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+MODULE_ALIAS("platform:ixp4xx-ehci");
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+
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+static struct platform_driver ixp4xx_ehci_driver = {
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+ .probe = ixp4xx_ehci_probe,
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+ .remove = ixp4xx_ehci_remove,
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+ .driver = {
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+ .name = "ixp4xx-ehci",
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+// .bus = &platform_bus_type
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+ },
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+};
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diff -Nur linux-2.6.24.2/drivers/usb/host/Kconfig linux-2.6.24.2-owrt/drivers/usb/host/Kconfig
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--- linux-2.6.24.2/drivers/usb/host/Kconfig 2008-02-11 06:51:11.000000000 +0100
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+++ linux-2.6.24.2-owrt/drivers/usb/host/Kconfig 2008-04-22 12:58:42.000000000 +0200
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@@ -69,12 +69,12 @@
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config USB_EHCI_BIG_ENDIAN_MMIO
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bool
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- depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX)
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+ depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || ARCH_IXP4XX)
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default y
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config USB_EHCI_BIG_ENDIAN_DESC
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bool
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- depends on USB_EHCI_HCD && 440EPX
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+ depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX)
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default y
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config USB_EHCI_FSL
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diff -Nur linux-2.6.24.2/drivers/usb/Kconfig linux-2.6.24.2-owrt/drivers/usb/Kconfig
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--- linux-2.6.24.2/drivers/usb/Kconfig 2008-02-11 06:51:11.000000000 +0100
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+++ linux-2.6.24.2-owrt/drivers/usb/Kconfig 2008-04-22 12:58:42.000000000 +0200
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@@ -49,6 +49,7 @@
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boolean
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default y if PPC_83xx
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default y if SOC_AU1200
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+ default y if ARCH_IXP4XX
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default PCI
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# ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.
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