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linux/debian/patches/features/powerpc/efika/0002-Add-USB-OHCI-glue-for-...

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From bc515daf6d0845b0ddb739f3ba822b66f84344a7 Mon Sep 17 00:00:00 2001
From: Nicolas DET <nd@bplan-gmbh.de>
Date: Fri, 24 Nov 2006 12:55:37 +0100
Subject: [PATCH] Add USB/OHCI glue for OpenFirmware devices
Signed-off-by: Nicolas DET <nd@bplan-gmbh.de>
---
drivers/usb/host/Kconfig | 19 +++
drivers/usb/host/ohci-hcd.c | 6 +
drivers/usb/host/ohci-ppc-of.c | 285 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 310 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index cf10cbc..f5ef6f5 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -106,6 +106,25 @@ config USB_OHCI_HCD_PPC_SOC
Enables support for the USB controller on the MPC52xx or
STB03xxx processor chip. If unsure, say Y.
+config USB_OHCI_HCD_PPC_OF
+ bool "OHCI support for PPC USB controller for OpenFirmware platform"
+ depends on USB_OHCI_HCD && PPC_OF
+ default y
+ ---help---
+ Enables support for the USB controller PowerPC OpenFirmware platform
+
+config USB_OHCI_HCD_PPC_OF_BE
+ bool "Support big endian HC"
+ depends on USB_OHCI_HCD_PPC_OF
+ default y
+ select USB_OHCI_BIG_ENDIAN
+
+config USB_OHCI_HCD_PPC_OF_LE
+ bool "Support little endian HC"
+ depends on USB_OHCI_HCD_PPC_OF
+ default n
+ select USB_OHCI_LITTLE_ENDIAN
+
config USB_OHCI_HCD_PCI
bool "OHCI support for PCI-bus USB controllers"
depends on USB_OHCI_HCD && PCI && (STB03xxx || PPC_MPC52xx)
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 9be6b30..04413b6 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -930,6 +930,10 @@ #ifdef CONFIG_USB_OHCI_HCD_PPC_SOC
#include "ohci-ppc-soc.c"
#endif
+#ifdef CONFIG_USB_OHCI_HCD_PPC_OF
+#include "ohci-ppc-of.c"
+#endif
+
#if defined(CONFIG_ARCH_AT91RM9200) || defined(CONFIG_ARCH_AT91SAM9261)
#include "ohci-at91.c"
#endif
@@ -950,6 +954,8 @@ #if !(defined(CONFIG_PCI) \
|| defined (CONFIG_ARCH_AT91RM9200) \
|| defined (CONFIG_ARCH_AT91SAM9261) \
|| defined (CONFIG_ARCH_PNX4008) \
+ || defined (CONFIG_USB_OHCI_HCD_PPC_OF_LE) \
+ || defined (CONFIG_USB_OHCI_HCD_PPC_OF_BE) \
)
#error "missing bus glue for ohci-hcd"
#endif
diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
new file mode 100644
index 0000000..30ce520
--- /dev/null
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -0,0 +1,285 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ * (C) Copyright 2003-2005 MontaVista Software Inc.
+ *
+ * Probe and init OHCI Big endian HC from OpenFirmware device tree
+ * Tested on Efika 5k2
+ *
+ * Modified by Dale Farnsworth <dale@farnsworth.org> from ohci-sa1111.c
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/signal.h>
+
+#include <asm/of_device.h>
+#include <asm/of_platform.h>
+#include <asm/prom.h>
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+/*
+ * usb_hcd_ppc_of_probe - initialize On-Chip HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller.
+ *
+ * Store this function in the HCD's struct pci_driver as probe().
+ */
+static int usb_hcd_ppc_of_probe(const struct hc_driver *driver,
+ struct of_device *dev, int is_bigendian)
+{
+ int retval;
+ struct usb_hcd *hcd;
+ struct ohci_hcd *ohci;
+ struct resource res;
+ int irq;
+ int ret;
+
+ pr_debug("initializing PPC-OF USB Controller\n");
+
+ if ((ret = of_address_to_resource(dev->node, 0, &res)) != 0)
+ return ret;
+
+ hcd = usb_create_hcd(driver, &dev->dev, "PPC-OF USB");
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = res.start;
+ hcd->rsrc_len = res.end - res.start + 1;
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ pr_debug(__FILE__ ": request_mem_region failed\n");
+ retval = -EBUSY;
+ goto err1;
+ }
+
+ irq = irq_of_parse_and_map(dev->node, 0);
+ if (irq == NO_IRQ) {
+ retval = -EBUSY;
+ goto err2;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ pr_debug(__FILE__ ": ioremap failed\n");
+ retval = -ENOMEM;
+ goto err2;
+ }
+
+ ohci = hcd_to_ohci(hcd);
+ if (is_bigendian)
+ ohci->flags |= OHCI_BIG_ENDIAN;
+
+ ohci_hcd_init(ohci);
+
+ retval = usb_add_hcd(hcd, irq, 0);
+ if (retval == 0)
+ return retval;
+
+ pr_debug("Removing PPC-OF USB Controller\n");
+
+ iounmap(hcd->regs);
+ err2:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ err1:
+ usb_put_hcd(hcd);
+ return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/*
+ * usb_hcd_ppc_of_remove - shutdown processing for On-Chip HCDs
+ * @pdev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_ppc_of_probe().
+ * It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+static void usb_hcd_ppc_of_remove(struct usb_hcd *hcd,
+ struct of_device *op)
+{
+ usb_remove_hcd(hcd);
+
+ pr_debug("stopping PPC-OF USB Controller\n");
+
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+}
+
+static int __devinit
+ohci_ppc_of_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ if ((ret = ohci_init(ohci)) < 0)
+ return ret;
+
+ if ((ret = ohci_run(ohci)) < 0) {
+ err("can't start %s", ohci_to_hcd(ohci)->self.bus_name);
+ ohci_stop(hcd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct hc_driver ohci_ppc_of_hc_driver = {
+ .description = hcd_name,
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .start = ohci_ppc_of_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+ .hub_irq_enable = ohci_rhsc_enable,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+
+
+static int ohci_hcd_ppc_of_drv_remove(struct of_device *op)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+ dev_set_drvdata(&op->dev, NULL);
+
+ usb_hcd_ppc_of_remove(hcd, op);
+ return 0;
+}
+
+static int ohci_hcd_ppc_of_drv_shutdown(struct of_device *op)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+
+ if (hcd->driver->shutdown)
+ hcd->driver->shutdown(hcd);
+
+ return 0;
+}
+
+/*
+ *
+*/
+
+static struct of_device_id ohci_hcd_ppc_of_match[] = {
+#ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE
+ {
+ .name = "usb",
+ .compatible = "ohci-bigendian",
+ },
+ {
+ .name = "usb",
+ .compatible = "ohci-be",
+ },
+#endif
+#ifdef CONFIG_USB_OHCI_HCD_PPC_OF_LE
+ {
+ .name = "usb",
+ .compatible = "ohci-littledian",
+ },
+ {
+ .name = "usb",
+ .compatible = "ohci-le",
+ },
+#endif
+ {},
+};
+
+static int __devinit
+ohci_hcd_ppc_of_drv_probe(struct of_device *op, const struct of_device_id *match)
+{
+ struct device_node *dev;
+ int ret;
+ int is_bigendian;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ dev = op->node;
+ is_bigendian = 0;
+
+ if ( device_is_compatible(dev, "ohci-bigendian") )
+ is_bigendian = 1;
+
+ if ( device_is_compatible(dev, "ohci-be") )
+ is_bigendian = 1;
+
+ ret = usb_hcd_ppc_of_probe(&ohci_ppc_of_hc_driver, op, is_bigendian);
+ return ret;
+}
+
+static struct of_platform_driver ohci_hcd_ppc_of_driver = {
+ .name = "ppc-of-ohci",
+ .match_table = ohci_hcd_ppc_of_match,
+ .probe = ohci_hcd_ppc_of_drv_probe,
+ .remove = ohci_hcd_ppc_of_drv_remove,
+ .shutdown = ohci_hcd_ppc_of_drv_shutdown,
+#ifdef CONFIG_PM
+ /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/
+ /*.resume = ohci_hcd_ppc_soc_drv_resume,*/
+#endif
+ .driver = {
+ .name = "ppc-of-ohci",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ohci_hcd_ppc_of_init(void)
+{
+ pr_debug(DRIVER_INFO " (PPC OF)\n");
+ pr_debug("block sizes: ed %d td %d\n", sizeof(struct ed),
+ sizeof(struct td));
+
+ return of_register_platform_driver(&ohci_hcd_ppc_of_driver);
+}
+
+static void __exit ohci_hcd_ppc_of_cleanup(void)
+{
+ of_unregister_platform_driver(&ohci_hcd_ppc_of_driver);
+}
+
+module_init(ohci_hcd_ppc_of_init);
+module_exit(ohci_hcd_ppc_of_cleanup);
+
--
1.4.3.2
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