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USB: UHCI: Add support for GRLIB GRUSBHC controller

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This patch adds support for the UHCI part of the GRLIB GRUSBHC controller
found on some LEON/GRLIB SoCs.

The UHCI HCD previously only supported controllers connected over PCI.
This patch adds support for the first non-PCI UHCI HC. I have tried to
replicate the solution used in ehci-hcd.c.

Tested on GR-LEON4-ITX board (LEON4/GRLIB with GRUSBHC) and x86 with Intel
UHCI HC.

Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jan Andersson
2011-05-06 12:00:18 +02:00
committed by Greg Kroah-Hartman
parent d3219d1c4c
commit 3db7739c80
3 changed files with 234 additions and 7 deletions
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41
drivers/usb/host/uhci-hcd.c
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@@ -831,7 +831,19 @@ static int uhci_count_ports(struct usb_hcd *hcd)
static const char hcd_name[] = "uhci_hcd";
#ifdef CONFIG_PCI
#include "uhci-pci.c"
#define PCI_DRIVER uhci_pci_driver
#endif
#ifdef CONFIG_SPARC_LEON
#include "uhci-grlib.c"
#define PLATFORM_DRIVER uhci_grlib_driver
#endif
#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER)
#error "missing bus glue for uhci-hcd"
#endif
static int __init uhci_hcd_init(void)
{
@@ -858,13 +870,27 @@ static int __init uhci_hcd_init(void)
if (!uhci_up_cachep)
goto up_failed;
retval = pci_register_driver(&uhci_pci_driver);
if (retval)
goto init_failed;
#ifdef PLATFORM_DRIVER
retval = platform_driver_register(&PLATFORM_DRIVER);
if (retval < 0)
goto clean0;
#endif
#ifdef PCI_DRIVER
retval = pci_register_driver(&PCI_DRIVER);
if (retval < 0)
goto clean1;
#endif
return 0;
init_failed:
#ifdef PCI_DRIVER
clean1:
#endif
#ifdef PLATFORM_DRIVER
platform_driver_unregister(&PLATFORM_DRIVER);
clean0:
#endif
kmem_cache_destroy(uhci_up_cachep);
up_failed:
@@ -881,7 +907,12 @@ errbuf_failed:
static void __exit uhci_hcd_cleanup(void)
{
pci_unregister_driver(&uhci_pci_driver);
#ifdef PLATFORM_DRIVER
platform_driver_unregister(&PLATFORM_DRIVER);
#endif
#ifdef PCI_DRIVER
pci_unregister_driver(&PCI_DRIVER);
#endif
kmem_cache_destroy(uhci_up_cachep);
debugfs_remove(uhci_debugfs_root);
kfree(errbuf);