backported ixp4xx ehci driver

SVN-Revision: 10946

1 files changed, 215 insertions, 0 deletions

diff --git a/target/linux/ixp4xx/patches-2.6.24/402-ixp4xx_ehci_backport.patch b/target/linux/ixp4xx/patches-2.6.24/402-ixp4xx_ehci_backport.patch
new file mode 100644
index 0000000..baae7a6
--- /dev/null
+++ b/target/linux/ixp4xx/patches-2.6.24/402-ixp4xx_ehci_backport.patch
@@ -0,0 +1,215 @@
+diff -Nur linux-2.6.24.2/drivers/usb/host/ehci.h linux-2.6.24.2-owrt/drivers/usb/host/ehci.h
+--- linux-2.6.24.2/drivers/usb/host/ehci.h	2008-02-11 06:51:11.000000000 +0100
++++ linux-2.6.24.2-owrt/drivers/usb/host/ehci.h	2008-04-22 12:58:42.000000000 +0200
+@@ -730,6 +730,11 @@
+ #define writel_be(val, addr)	out_be32((__force unsigned *)addr, val)
+ #endif
+ 
++#if defined(CONFIG_ARM) && defined(CONFIG_ARCH_IXP4XX)
++#define readl_be(addr)		__raw_readl((__force unsigned *)addr)
++#define writel_be(val, addr)	__raw_writel(val, (__force unsigned *)addr)
++#endif
++
+ static inline unsigned int ehci_readl(const struct ehci_hcd *ehci,
+ 		__u32 __iomem * regs)
+ {
+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
+--- linux-2.6.24.2/drivers/usb/host/ehci-hcd.c	2008-02-11 06:51:11.000000000 +0100
++++ linux-2.6.24.2-owrt/drivers/usb/host/ehci-hcd.c	2008-04-22 12:58:42.000000000 +0200
+@@ -964,6 +964,11 @@
+ #define	PLATFORM_DRIVER		ehci_ppc_soc_driver
+ #endif
+ 
++#ifdef CONFIG_ARCH_IXP4XX
++#include "ehci-ixp4xx.c"
++#define	PLATFORM_DRIVER		ixp4xx_ehci_driver
++#endif
++
+ #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
+     !defined(PS3_SYSTEM_BUS_DRIVER)
+ #error "missing bus glue for ehci-hcd"
+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
+--- linux-2.6.24.2/drivers/usb/host/ehci-ixp4xx.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.24.2-owrt/drivers/usb/host/ehci-ixp4xx.c	2008-04-22 12:58:42.000000000 +0200
+@@ -0,0 +1,152 @@
++/*
++ * IXP4XX EHCI Host Controller Driver
++ *
++ * Author: Vladimir Barinov <vbarinov@ru.mvista.com>
++ *
++ * Based on "ehci-fsl.c" by Randy Vinson <rvinson@mvista.com>
++ *
++ * 2007 (c) MontaVista Software, Inc. This file is licensed under
++ * the terms of the GNU General Public License version 2. This program
++ * is licensed "as is" without any warranty of any kind, whether express
++ * or implied.
++ */
++
++#include <linux/platform_device.h>
++
++static int ixp4xx_ehci_init(struct usb_hcd *hcd)
++{
++	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
++	int retval = 0;
++
++	ehci->big_endian_desc = 1;
++	ehci->big_endian_mmio = 1;
++
++	ehci->caps = hcd->regs + 0x100;
++	ehci->regs = hcd->regs + 0x100
++		+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
++	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
++
++	ehci->is_tdi_rh_tt = 1;
++	ehci_reset(ehci);
++
++	retval = ehci_init(hcd);
++	if (retval)
++		return retval;
++
++	ehci_port_power(ehci, 0);
++
++	return retval;
++}
++
++static const struct hc_driver ixp4xx_ehci_hc_driver = {
++	.description		= hcd_name,
++	.product_desc		= "IXP4XX EHCI Host Controller",
++	.hcd_priv_size		= sizeof(struct ehci_hcd),
++	.irq			= ehci_irq,
++	.flags			= HCD_MEMORY | HCD_USB2,
++	.reset			= ixp4xx_ehci_init,
++	.start			= ehci_run,
++	.stop			= ehci_stop,
++	.shutdown		= ehci_shutdown,
++	.urb_enqueue		= ehci_urb_enqueue,
++	.urb_dequeue		= ehci_urb_dequeue,
++	.endpoint_disable	= ehci_endpoint_disable,
++	.get_frame_number	= ehci_get_frame,
++	.hub_status_data	= ehci_hub_status_data,
++	.hub_control		= ehci_hub_control,
++#if defined(CONFIG_PM)
++	.bus_suspend		= ehci_bus_suspend,
++	.bus_resume		= ehci_bus_resume,
++#endif
++};
++
++static int ixp4xx_ehci_probe(struct platform_device *pdev)
++{
++	struct usb_hcd *hcd;
++	const struct hc_driver *driver = &ixp4xx_ehci_hc_driver;
++	struct resource *res;
++	int irq;
++	int retval;
++
++	if (usb_disabled())
++		return -ENODEV;
++
++	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
++	if (!res) {
++		dev_err(&pdev->dev,
++			"Found HC with no IRQ. Check %s setup!\n",
++			pdev->dev.bus_id);
++		return -ENODEV;
++	}
++	irq = res->start;
++
++	hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
++	if (!hcd) {
++		retval = -ENOMEM;
++		goto fail_create_hcd;
++	}
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!res) {
++		dev_err(&pdev->dev,
++			"Found HC with no register addr. Check %s setup!\n",
++			pdev->dev.bus_id);
++		retval = -ENODEV;
++		goto fail_request_resource;
++	}
++	hcd->rsrc_start = res->start;
++	hcd->rsrc_len = res->end - res->start + 1;
++
++	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
++				driver->description)) {
++		dev_dbg(&pdev->dev, "controller already in use\n");
++		retval = -EBUSY;
++		goto fail_request_resource;
++	}
++
++	hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
++	if (hcd->regs == NULL) {
++		dev_dbg(&pdev->dev, "error mapping memory\n");
++		retval = -EFAULT;
++		goto fail_ioremap;
++	}
++
++	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
++	if (retval)
++		goto fail_add_hcd;
++
++	return retval;
++
++fail_add_hcd:
++	iounmap(hcd->regs);
++fail_ioremap:
++	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
++fail_request_resource:
++	usb_put_hcd(hcd);
++fail_create_hcd:
++	dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval);
++	return retval;
++}
++
++static int ixp4xx_ehci_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);
++
++	return 0;
++}
++
++MODULE_ALIAS("platform:ixp4xx-ehci");
++
++static struct platform_driver ixp4xx_ehci_driver = {
++	.probe = ixp4xx_ehci_probe,
++	.remove = ixp4xx_ehci_remove,
++	.driver = {
++		.name = "ixp4xx-ehci",
++//		.bus = &platform_bus_type
++	},
++};
+diff -Nur linux-2.6.24.2/drivers/usb/host/Kconfig linux-2.6.24.2-owrt/drivers/usb/host/Kconfig
+--- linux-2.6.24.2/drivers/usb/host/Kconfig	2008-02-11 06:51:11.000000000 +0100
++++ linux-2.6.24.2-owrt/drivers/usb/host/Kconfig	2008-04-22 12:58:42.000000000 +0200
+@@ -69,12 +69,12 @@
+ 
+ config USB_EHCI_BIG_ENDIAN_MMIO
+ 	bool
+-	depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX)
++	depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || ARCH_IXP4XX)
+ 	default y
+ 
+ config USB_EHCI_BIG_ENDIAN_DESC
+ 	bool
+-	depends on USB_EHCI_HCD && 440EPX
++	depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX)
+ 	default y
+ 
+ config USB_EHCI_FSL
+diff -Nur linux-2.6.24.2/drivers/usb/Kconfig linux-2.6.24.2-owrt/drivers/usb/Kconfig
+--- linux-2.6.24.2/drivers/usb/Kconfig	2008-02-11 06:51:11.000000000 +0100
++++ linux-2.6.24.2-owrt/drivers/usb/Kconfig	2008-04-22 12:58:42.000000000 +0200
+@@ -49,6 +49,7 @@
+ 	boolean
+ 	default y if PPC_83xx
+ 	default y if SOC_AU1200
++	default y if ARCH_IXP4XX
+ 	default PCI
+ 
+ # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.