Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=91bc4d31e81b15aa6e2d075307b8727041f2e2d1
Commit: 91bc4d31e81b15aa6e2d075307b8727041f2e2d1
Parent: 18bcbcfe9ca2308ebffb40068b51803da9315d97
Author: Vladimir Barinov <[EMAIL PROTECTED]>
AuthorDate: Sun Dec 30 15:21:11 2007 -0800
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Fri Feb 1 14:35:02 2008 -0800
USB: add ehci-ixp bus glue
EHCI Glue driver for Intel IXP4XX EHCI USB controller
Signed-off-by: Vladimir Barinov <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/Kconfig | 1 +
drivers/usb/host/Kconfig | 4 +-
drivers/usb/host/ehci-hcd.c | 5 ++
drivers/usb/host/ehci-ixp4xx.c | 152 ++++++++++++++++++++++++++++++++++++++++
drivers/usb/host/ehci.h | 5 ++
5 files changed, 165 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 7a64990..8d48d97 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -50,6 +50,7 @@ config USB_ARCH_HAS_EHCI
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.
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 1f45aa2..3a42bcd 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -69,12 +69,12 @@ config USB_EHCI_TT_NEWSCHED
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 --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 53fc97f..4caa6a8 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1008,6 +1008,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_orion_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 --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c
new file mode 100644
index 0000000..3041d8f
--- /dev/null
+++ b/drivers/usb/host/ehci-ixp4xx.c
@@ -0,0 +1,152 @@
+/*
+ * IXP4XX EHCI Host Controller Driver
+ *
+ * Author: Vladimir Barinov <[EMAIL PROTECTED]>
+ *
+ * Based on "ehci-fsl.c" by Randy Vinson <[EMAIL PROTECTED]>
+ *
+ * 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
+ },
+};
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index c78c527..f834728 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -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)
#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)
{
-
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