Commit 91bc4d31 authored by Vladimir Barinov's avatar Vladimir Barinov Committed by Greg Kroah-Hartman

USB: add ehci-ixp bus glue

EHCI Glue driver for Intel IXP4XX EHCI USB controller
Signed-off-by: default avatarVladimir Barinov <vbarinov@ru.mvista.com>
Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 18bcbcfe
...@@ -50,6 +50,7 @@ config USB_ARCH_HAS_EHCI ...@@ -50,6 +50,7 @@ config USB_ARCH_HAS_EHCI
boolean boolean
default y if PPC_83xx default y if PPC_83xx
default y if SOC_AU1200 default y if SOC_AU1200
default y if ARCH_IXP4XX
default PCI default PCI
# ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface. # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface.
......
...@@ -69,12 +69,12 @@ config USB_EHCI_TT_NEWSCHED ...@@ -69,12 +69,12 @@ config USB_EHCI_TT_NEWSCHED
config USB_EHCI_BIG_ENDIAN_MMIO config USB_EHCI_BIG_ENDIAN_MMIO
bool 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 default y
config USB_EHCI_BIG_ENDIAN_DESC config USB_EHCI_BIG_ENDIAN_DESC
bool bool
depends on USB_EHCI_HCD && 440EPX depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX)
default y default y
config USB_EHCI_FSL config USB_EHCI_FSL
......
...@@ -1008,6 +1008,11 @@ MODULE_LICENSE ("GPL"); ...@@ -1008,6 +1008,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_orion_driver #define PLATFORM_DRIVER ehci_orion_driver
#endif #endif
#ifdef CONFIG_ARCH_IXP4XX
#include "ehci-ixp4xx.c"
#define PLATFORM_DRIVER ixp4xx_ehci_driver
#endif
#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \ #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) !defined(PS3_SYSTEM_BUS_DRIVER)
#error "missing bus glue for ehci-hcd" #error "missing bus glue for ehci-hcd"
......
/*
* 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("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
},
};
...@@ -746,6 +746,11 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc) ...@@ -746,6 +746,11 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
#define writel_be(val, addr) out_be32((__force unsigned *)addr, val) #define writel_be(val, addr) out_be32((__force unsigned *)addr, val)
#endif #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, static inline unsigned int ehci_readl(const struct ehci_hcd *ehci,
__u32 __iomem * regs) __u32 __iomem * regs)
{ {
......
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