cns21xx: add initial support for the Cavium CNS21xx SoC

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24859 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 230 insertions, 0 deletions

diff --git a/target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch b/target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch
new file mode 100644
index 0000000000..1299ca40ba
--- /dev/null
+++ b/target/linux/cns21xx/patches-2.6.37/103-cns21xx-usb-ohci-support.patch
@@ -0,0 +1,230 @@
+--- a/drivers/usb/host/ohci-hcd.c
++++ b/drivers/usb/host/ohci-hcd.c
+@@ -589,7 +589,6 @@ static int ohci_run (struct ohci_hcd *oh
+ 
+ 	/* boot firmware should have set this up (5.1.1.3.1) */
+ 	if (first) {
+-
+ 		val = ohci_readl (ohci, &ohci->regs->fminterval);
+ 		ohci->fminterval = val & 0x3fff;
+ 		if (ohci->fminterval != FI)
+@@ -673,6 +672,9 @@ 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.
+ 	 */
+@@ -1067,6 +1069,11 @@ MODULE_LICENSE ("GPL");
+ #define PLATFORM_DRIVER		ohci_hcd_da8xx_driver
+ #endif
+ 
++#ifdef CONFIG_ARCH_CNS21XX
++#include "ohci-cns21xx.c"
++#define PLATFORM_DRIVER		ohci_cns21xx_driver
++#endif
++
+ #if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
+     defined(CONFIG_CPU_SUBTYPE_SH7721) || \
+     defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+--- /dev/null
++++ b/drivers/usb/host/ohci-cns21xx.c
+@@ -0,0 +1,175 @@
++/*
++ *  Copyright (c) 2008 Cavium Networks
++ *  Copyright (c) 2010 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 __devinit 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) {
++		err("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)
++{
++	__raw_writel(0x146, CNS21XX_OHCI_CONFIG_BASE_VIRT + 0x04);
++	__raw_writel(0x200, CNS21XX_OHCI_CONFIG_BASE_VIRT + 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
+@@ -404,6 +404,7 @@ struct ohci_hcd {
+ #define	OHCI_QUIRK_AMD_ISO	0x200			/* ISO transfers*/
+ #define	OHCI_QUIRK_AMD_PREFETCH	0x400			/* pre-fetch for ISO transfer */
+ #define	OHCI_QUIRK_SHUTDOWN	0x800			/* nVidia power bug */
++#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
+@@ -299,6 +299,7 @@ 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.
+