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|
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -695,6 +695,9 @@ retry:
periodic_reinit (ohci);
+ if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL)
+ ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval);
+
/* some OHCI implementations are finicky about how they init.
* bogus values here mean not even enumeration could work.
*/
@@ -1189,6 +1192,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_hcd_tilegx_driver
#endif
+#ifdef CONFIG_ARCH_CNS21XX
+#include "ohci-cns21xx.c"
+#define CNS21XX_PLATFORM_DRIVER ohci_cns21xx_driver
+#endif
+
#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
#include "ohci-platform.c"
#define PLATFORM_DRIVER ohci_platform_driver
@@ -1209,7 +1217,8 @@ MODULE_LICENSE ("GPL");
!defined(AT91_PLATFORM_DRIVER) && \
!defined(NXP_PLATFORM_DRIVER) && \
!defined(DAVINCI_PLATFORM_DRIVER) && \
- !defined(SPEAR_PLATFORM_DRIVER)
+ !defined(SPEAR_PLATFORM_DRIVER) && \
+ !defined(CNS21XX_PLATFORM_DRIVER)
#error "missing bus glue for ohci-hcd"
#endif
@@ -1329,9 +1338,19 @@ static int __init ohci_hcd_mod_init(void
goto error_spear;
#endif
+#ifdef CNS21XX_PLATFORM_DRIVER
+ retval = platform_driver_register(&CNS21XX_PLATFORM_DRIVER);
+ if (retval < 0)
+ goto error_cns21xx;
+#endif
+
return retval;
/* Error path */
+#ifdef CNS21XX_PLATFORM_DRIVER
+ platform_driver_unregister(&CNS21XX_PLATFORM_DRIVER);
+ error_cns21xx:
+#endif
#ifdef SPEAR_PLATFORM_DRIVER
platform_driver_unregister(&SPEAR_PLATFORM_DRIVER);
error_spear:
@@ -1409,6 +1428,9 @@ module_init(ohci_hcd_mod_init);
static void __exit ohci_hcd_mod_exit(void)
{
+#ifdef CNS21XX_PLATFORM_DRIVER
+ platform_driver_unregister(&CNS21XX_PLATFORM_DRIVER);
+#endif
#ifdef SPEAR_PLATFORM_DRIVER
platform_driver_unregister(&SPEAR_PLATFORM_DRIVER);
#endif
--- /dev/null
+++ b/drivers/usb/host/ohci-cns21xx.c
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2008 Cavium Networks
+ * Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/platform_device.h>
+
+#include <mach/cns21xx.h>
+
+#define DRIVER_NAME "cns21xx-ohci"
+
+static int cns21xx_ohci_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ ret = ohci_init(ohci);
+ if (ret)
+ return ret;
+
+ ret = ohci_run(ohci);
+ if (ret) {
+ ohci_err(ohci, "can't start %s",
+ ohci_to_hcd(ohci)->self.bus_name);
+ goto err;
+ }
+
+ return 0;
+
+err:
+ ohci_stop(hcd);
+ return ret;
+}
+
+static const struct hc_driver ohci_cns21xx_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "cns21xx-ohci",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .start = cns21xx_ohci_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+ .start_port_reset = ohci_start_port_reset,
+};
+
+static void cns21xx_ohci_init_hc(void)
+{
+ void __iomem *base = (void __iomem *) CNS21XX_OHCI_CONFIG_BASE_VIRT;
+
+ __raw_writel(0x146, base + 0x04);
+ __raw_writel(0x200, base + 0x44);
+ msleep(100);
+}
+
+static int ohci_cns21xx_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ struct resource *res;
+ struct ohci_hcd *ohci;
+ int irq;
+ int ret;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ dev_dbg(&pdev->dev, "no IRQ specified for %s\n",
+ dev_name(&pdev->dev));
+ return -ENODEV;
+ }
+ irq = res->start;
+
+ hcd = usb_create_hcd(&ohci_cns21xx_hc_driver, &pdev->dev,
+ dev_name(&pdev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_dbg(&pdev->dev, "no base address specified for %s\n",
+ dev_name(&pdev->dev));
+ ret = -ENODEV;
+ goto err_put_hcd;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = res->end - res->start + 1;
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ dev_dbg(&pdev->dev, "controller already in use\n");
+ ret = -EBUSY;
+ goto err_put_hcd;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ dev_dbg(&pdev->dev, "error mapping memory\n");
+ ret = -EFAULT;
+ goto err_release_region;
+ }
+
+ cns21xx_ohci_init_hc();
+
+ ohci = hcd_to_ohci(hcd);
+ ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL;
+ ohci_hcd_init(ohci);
+
+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ if (ret)
+ goto err_unmap;
+
+ platform_set_drvdata(pdev, hcd);
+ return 0;
+
+err_unmap:
+ iounmap(hcd->regs);
+err_release_region:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_put_hcd:
+ usb_put_hcd(hcd);
+ return ret;
+}
+
+static int ohci_cns21xx_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver ohci_cns21xx_driver = {
+ .probe = ohci_cns21xx_probe,
+ .remove = ohci_cns21xx_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRIVER_NAME,
+ },
+};
+
+MODULE_ALIAS("platform:" DRIVER_NAME);
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -405,6 +405,7 @@ struct ohci_hcd {
#define OHCI_QUIRK_HUB_POWER 0x100 /* distrust firmware power/oc setup */
#define OHCI_QUIRK_AMD_PLL 0x200 /* AMD PLL quirk*/
#define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */
+#define OHCI_QUIRK_INIT_FMINTERVAL 0x1000 /* fminterval must be initialized */
// there are also chip quirks/bugs in init logic
struct work_struct nec_work; /* Worker for NEC quirk */
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -374,6 +374,7 @@ config ARCH_CNS21XX
select PLAT_FA_GPIO
select ARCH_REQUIRE_GPIOLIB
select ARM_L1_CACHE_SHIFT_4
+ select USB_ARCH_HAS_OHCI
help
Support for Cavium Networks CNS21xx family.
|
