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266 lines
6.4 KiB
Diff
266 lines
6.4 KiB
Diff
--- a/drivers/usb/host/ohci-hcd.c
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+++ b/drivers/usb/host/ohci-hcd.c
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@@ -697,6 +697,9 @@ retry:
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periodic_reinit (ohci);
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+ if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL)
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+ ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval);
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+
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/* some OHCI implementations are finicky about how they init.
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* bogus values here mean not even enumeration could work.
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*/
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@@ -1191,6 +1194,11 @@ MODULE_LICENSE ("GPL");
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#define PLATFORM_DRIVER ohci_hcd_tilegx_driver
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#endif
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+#ifdef CONFIG_ARCH_CNS21XX
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+#include "ohci-cns21xx.c"
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+#define CNS21XX_PLATFORM_DRIVER ohci_cns21xx_driver
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+#endif
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+
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#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
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#include "ohci-platform.c"
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#define PLATFORM_DRIVER ohci_platform_driver
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@@ -1211,7 +1219,8 @@ MODULE_LICENSE ("GPL");
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!defined(AT91_PLATFORM_DRIVER) && \
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!defined(NXP_PLATFORM_DRIVER) && \
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!defined(DAVINCI_PLATFORM_DRIVER) && \
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- !defined(SPEAR_PLATFORM_DRIVER)
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+ !defined(SPEAR_PLATFORM_DRIVER) && \
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+ !defined(CNS21XX_PLATFORM_DRIVER)
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#error "missing bus glue for ohci-hcd"
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#endif
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@@ -1331,9 +1340,19 @@ static int __init ohci_hcd_mod_init(void
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goto error_spear;
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#endif
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+#ifdef CNS21XX_PLATFORM_DRIVER
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+ retval = platform_driver_register(&CNS21XX_PLATFORM_DRIVER);
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+ if (retval < 0)
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+ goto error_cns21xx;
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+#endif
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+
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return retval;
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/* Error path */
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+#ifdef CNS21XX_PLATFORM_DRIVER
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+ platform_driver_unregister(&CNS21XX_PLATFORM_DRIVER);
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+ error_cns21xx:
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+#endif
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#ifdef SPEAR_PLATFORM_DRIVER
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platform_driver_unregister(&SPEAR_PLATFORM_DRIVER);
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error_spear:
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@@ -1411,6 +1430,9 @@ module_init(ohci_hcd_mod_init);
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static void __exit ohci_hcd_mod_exit(void)
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{
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+#ifdef CNS21XX_PLATFORM_DRIVER
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+ platform_driver_unregister(&CNS21XX_PLATFORM_DRIVER);
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+#endif
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#ifdef SPEAR_PLATFORM_DRIVER
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platform_driver_unregister(&SPEAR_PLATFORM_DRIVER);
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#endif
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--- /dev/null
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+++ b/drivers/usb/host/ohci-cns21xx.c
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@@ -0,0 +1,178 @@
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+/*
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+ * Copyright (c) 2008 Cavium Networks
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+ * Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org>
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+ *
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+ * This file is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License, Version 2, as
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+ * published by the Free Software Foundation.
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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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+#include <mach/cns21xx.h>
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+
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+#define DRIVER_NAME "cns21xx-ohci"
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+
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+static int cns21xx_ohci_start(struct usb_hcd *hcd)
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+{
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+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
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+ int ret;
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+
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+ ret = ohci_init(ohci);
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+ if (ret)
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+ return ret;
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+
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+ ret = ohci_run(ohci);
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+ if (ret) {
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+ ohci_err(ohci, "can't start %s",
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+ ohci_to_hcd(ohci)->self.bus_name);
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+ goto err;
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+ }
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+
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+ return 0;
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+
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+err:
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+ ohci_stop(hcd);
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+ return ret;
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+}
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+
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+static const struct hc_driver ohci_cns21xx_hc_driver = {
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+ .description = hcd_name,
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+ .product_desc = "cns21xx-ohci",
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+ .hcd_priv_size = sizeof(struct ohci_hcd),
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+
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+ /*
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+ * generic hardware linkage
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+ */
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+ .irq = ohci_irq,
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+ .flags = HCD_USB11 | HCD_MEMORY,
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+
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+ /*
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+ * basic lifecycle operations
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+ */
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+ .start = cns21xx_ohci_start,
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+ .stop = ohci_stop,
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+ .shutdown = ohci_shutdown,
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+
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+ /*
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+ * managing i/o requests and associated device resources
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+ */
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+ .urb_enqueue = ohci_urb_enqueue,
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+ .urb_dequeue = ohci_urb_dequeue,
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+ .endpoint_disable = ohci_endpoint_disable,
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+
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+ /*
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+ * scheduling support
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+ */
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+ .get_frame_number = ohci_get_frame,
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+
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+ /*
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+ * root hub support
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+ */
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+ .hub_status_data = ohci_hub_status_data,
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+ .hub_control = ohci_hub_control,
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+ .start_port_reset = ohci_start_port_reset,
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+};
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+
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+static void cns21xx_ohci_init_hc(void)
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+{
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+ void __iomem *base = (void __iomem *) CNS21XX_OHCI_CONFIG_BASE_VIRT;
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+
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+ __raw_writel(0x146, base + 0x04);
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+ __raw_writel(0x200, base + 0x44);
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+ msleep(100);
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+}
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+
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+static int ohci_cns21xx_probe(struct platform_device *pdev)
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+{
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+ struct usb_hcd *hcd;
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+ struct resource *res;
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+ struct ohci_hcd *ohci;
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+ int irq;
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+ int ret;
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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_dbg(&pdev->dev, "no IRQ specified for %s\n",
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+ dev_name(&pdev->dev));
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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(&ohci_cns21xx_hc_driver, &pdev->dev,
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+ dev_name(&pdev->dev));
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+ if (!hcd)
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+ return -ENOMEM;
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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_dbg(&pdev->dev, "no base address specified for %s\n",
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+ dev_name(&pdev->dev));
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+ ret = -ENODEV;
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+ goto err_put_hcd;
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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, hcd_name)) {
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+ dev_dbg(&pdev->dev, "controller already in use\n");
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+ ret = -EBUSY;
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+ goto err_put_hcd;
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+ }
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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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+ dev_dbg(&pdev->dev, "error mapping memory\n");
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+ ret = -EFAULT;
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+ goto err_release_region;
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+ }
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+
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+ cns21xx_ohci_init_hc();
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+
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+ ohci = hcd_to_ohci(hcd);
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+ ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL;
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+ ohci_hcd_init(ohci);
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+
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+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
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+ if (ret)
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+ goto err_unmap;
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+
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+ platform_set_drvdata(pdev, hcd);
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+ return 0;
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+
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+err_unmap:
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+ iounmap(hcd->regs);
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+err_release_region:
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+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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+err_put_hcd:
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+ usb_put_hcd(hcd);
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+ return ret;
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+}
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+
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+static int ohci_cns21xx_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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+ platform_set_drvdata(pdev, NULL);
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+
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+ return 0;
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+}
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+
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+static struct platform_driver ohci_cns21xx_driver = {
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+ .probe = ohci_cns21xx_probe,
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+ .remove = ohci_cns21xx_remove,
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+ .shutdown = usb_hcd_platform_shutdown,
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+ .driver = {
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+ .owner = THIS_MODULE,
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+ .name = DRIVER_NAME,
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+ },
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+};
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+
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+MODULE_ALIAS("platform:" DRIVER_NAME);
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--- a/drivers/usb/host/ohci.h
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+++ b/drivers/usb/host/ohci.h
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@@ -405,6 +405,7 @@ struct ohci_hcd {
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#define OHCI_QUIRK_HUB_POWER 0x100 /* distrust firmware power/oc setup */
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#define OHCI_QUIRK_AMD_PLL 0x200 /* AMD PLL quirk*/
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#define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */
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+#define OHCI_QUIRK_INIT_FMINTERVAL 0x1000 /* fminterval must be initialized */
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// there are also chip quirks/bugs in init logic
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struct work_struct nec_work; /* Worker for NEC quirk */
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--- a/arch/arm/Kconfig
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+++ b/arch/arm/Kconfig
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@@ -374,6 +374,7 @@ config ARCH_CNS21XX
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select PLAT_FA_GPIO
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select ARCH_REQUIRE_GPIOLIB
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select ARM_L1_CACHE_SHIFT_4
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+ select USB_ARCH_HAS_OHCI
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help
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Support for Cavium Networks CNS21xx family.
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