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|
---
drivers/usb/host/Kconfig | 13 ++
drivers/usb/host/ehci-hcd.c | 12 ++
drivers/usb/host/ehci-ssb.c | 201 ++++++++++++++++++++++++++++++++++++++++++++
drivers/usb/host/ohci-ssb.c | 23 +++++
4 files changed, 247 insertions(+), 2 deletions(-)
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -150,6 +150,19 @@ config USB_OXU210HP_HCD
To compile this driver as a module, choose M here: the
module will be called oxu210hp-hcd.
+config USB_EHCI_HCD_SSB
+ bool "EHCI support for Broadcom SSB EHCI core"
+ depends on USB_EHCI_HCD && SSB && EXPERIMENTAL
+ default n
+ ---help---
+ Support for the Sonics Silicon Backplane (SSB) attached
+ Broadcom USB EHCI core.
+
+ This device is present in some embedded devices with
+ Broadcom based SSB bus.
+
+ If unsure, say N.
+
config USB_ISP116X_HCD
tristate "ISP116X HCD support"
depends on USB
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1158,8 +1158,16 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_atmel_driver
#endif
-#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
- !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER)
+#ifdef CONFIG_USB_EHCI_HCD_SSB
+#include "ehci-ssb.c"
+#define SSB_EHCI_DRIVER ssb_ehci_driver
+#endif
+
+#if !defined(PCI_DRIVER) && \
+ !defined(PLATFORM_DRIVER) && \
+ !defined(PS3_SYSTEM_BUS_DRIVER) && \
+ !defined(OF_PLATFORM_DRIVER) && \
+ !defined(SSB_EHCI_DRIVER)
#error "missing bus glue for ehci-hcd"
#endif
--- /dev/null
+++ b/drivers/usb/host/ehci-ssb.c
@@ -0,0 +1,158 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom USB-core EHCI driver (SSB bus glue)
+ *
+ * Copyright 2007 Steven Brown <sbrown@cortland.com>
+ *
+ * Derived from the OHCI-SSB driver
+ * Copyright 2007 Michael Buesch <mb@bu3sch.de>
+ *
+ * Derived from the EHCI-PCI driver
+ * Copyright (c) 2000-2004 by David Brownell
+ *
+ * Derived from the OHCI-PCI driver
+ * Copyright 1999 Roman Weissgaerber
+ * Copyright 2000-2002 David Brownell
+ * Copyright 1999 Linus Torvalds
+ * Copyright 1999 Gregory P. Smith
+ *
+ * Derived from the USBcore related parts of Broadcom-SB
+ * Copyright 2005 Broadcom Corporation
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+#include <linux/ssb/ssb.h>
+
+#define SSB_OHCI_TMSLOW_HOSTMODE (1 << 29)
+
+struct ssb_ehci_device {
+ struct ehci_hcd ehci; /* _must_ be at the beginning. */
+
+ u32 enable_flags;
+};
+
+static inline
+struct ssb_ehci_device *hcd_to_ssb_ehci(struct usb_hcd *hcd)
+{
+ return (struct ssb_ehci_device *)(hcd->hcd_priv);
+}
+
+static int ssb_ehci_reset(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int err;
+
+ ehci->caps = hcd->regs;
+ ehci->regs = hcd->regs +
+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+
+ dbg_hcs_params(ehci, "reset");
+ dbg_hcc_params(ehci, "reset");
+
+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+ err = ehci_halt(ehci);
+
+ if (err)
+ return err;
+
+ err = ehci_init(hcd);
+
+ if (err)
+ return err;
+
+ ehci_reset(ehci);
+
+ return err;
+}
+
+static const struct hc_driver ssb_ehci_hc_driver = {
+ .description = "ssb-usb-ehci",
+ .product_desc = "SSB EHCI Controller",
+ .hcd_priv_size = sizeof(struct ssb_ehci_device),
+
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ .reset = ssb_ehci_reset,
+ .start = ehci_run,
+ .stop = ehci_stop,
+ .shutdown = ehci_shutdown,
+
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+ .endpoint_reset = ehci_endpoint_reset,
+
+ .get_frame_number = ehci_get_frame,
+
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd)
+{
+ if (hcd->driver->shutdown)
+ hcd->driver->shutdown(hcd);
+
+ usb_remove_hcd(hcd);
+
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+
+ usb_put_hcd(hcd);
+}
+EXPORT_SYMBOL_GPL(ssb_ehci_detach);
+
+static int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **ehci_hcd)
+{
+ struct ssb_ehci_device *ehcidev;
+ struct usb_hcd *hcd;
+ int err = -ENOMEM;
+ u32 tmp, flags = 0;
+
+ hcd = usb_create_hcd(&ssb_ehci_hc_driver, dev->dev,
+ dev_name(dev->dev));
+ if (!hcd)
+ goto err_dev_disable;
+
+ ehcidev = hcd_to_ssb_ehci(hcd);
+ ehcidev->enable_flags = flags;
+ tmp = ssb_read32(dev, SSB_ADMATCH0);
+ hcd->rsrc_start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
+ hcd->rsrc_len = 0x100; /* ehci reg block size */
+ /*
+ * start & size modified per sbutils.c
+ */
+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs)
+ goto err_put_hcd;
+ err = usb_add_hcd(hcd, dev->irq, IRQF_SHARED | IRQF_DISABLED);
+ if (err)
+ goto err_iounmap;
+
+ *ehci_hcd = hcd;
+
+ return err;
+
+err_iounmap:
+ iounmap(hcd->regs);
+err_put_hcd:
+ usb_put_hcd(hcd);
+err_dev_disable:
+ ssb_device_disable(dev, flags);
+ return err;
+}
+EXPORT_SYMBOL_GPL(ssb_ehci_attach);
+
+static const struct ssb_device_id ssb_ehci_table[] = {
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
+ SSB_DEVTABLE_END
+};
+MODULE_DEVICE_TABLE(ssb, ssb_ehci_table);
--- a/drivers/usb/host/ohci-ssb.c
+++ b/drivers/usb/host/ohci-ssb.c
@@ -17,6 +17,8 @@
*/
#include <linux/ssb/ssb.h>
+extern int ssb_ehci_attach(struct ssb_device *dev, struct usb_hcd **hcd);
+extern void ssb_ehci_detach(struct ssb_device *dev, struct usb_hcd *hcd);
#define SSB_OHCI_TMSLOW_HOSTMODE (1 << 29)
@@ -24,6 +26,7 @@ struct ssb_ohci_device {
struct ohci_hcd ohci; /* _must_ be at the beginning. */
u32 enable_flags;
+ struct usb_hcd *ehci_hcd;
};
static inline
@@ -92,13 +95,25 @@ static const struct hc_driver ssb_ohci_h
static void ssb_ohci_detach(struct ssb_device *dev)
{
struct usb_hcd *hcd = ssb_get_drvdata(dev);
+#ifdef CONFIG_USB_EHCI_HCD_SSB
+ struct ssb_ohci_device *ohcidev = hcd_to_ssb_ohci(hcd);
+#endif
usb_remove_hcd(hcd);
iounmap(hcd->regs);
usb_put_hcd(hcd);
+
+#ifdef CONFIG_USB_EHCI_HCD_SSB
+ /*
+ * Also detach ehci function
+ */
+ if (dev->id.coreid == SSB_DEV_USB20_HOST)
+ ssb_ehci_detach(dev, ohcidev->ehci_hcd);
+#endif
ssb_device_disable(dev, 0);
}
+
static int ssb_ohci_attach(struct ssb_device *dev)
{
struct ssb_ohci_device *ohcidev;
@@ -165,6 +180,14 @@ static int ssb_ohci_attach(struct ssb_de
ssb_set_drvdata(dev, hcd);
+#ifdef CONFIG_USB_EHCI_HCD_SSB
+ /*
+ * attach ehci function in this core
+ */
+ if (dev->id.coreid == SSB_DEV_USB20_HOST)
+ err = ssb_ehci_attach(dev, &(ohcidev->ehci_hcd));
+#endif
+
return err;
err_iounmap:
|
