+++ /dev/null
-From b39adeae5b06e40699c174ed78ca7c45b8d7976f Mon Sep 17 00:00:00 2001
-From: Hauke Mehrtens <hauke@hauke-m.de>
-Date: Sat, 26 Nov 2011 21:20:54 +0100
-Subject: [PATCH 17/21] USB: OHCI: Add a generic platform device driver
-
-This adds a generic driver for platform devices. It works like the PCI
-driver and is based on it. This is for devices which do not have an own
-bus but their OHCI controller works like a PCI controller. It will be
-used for the Broadcom bcma and ssb USB OHCI controller.
-
-Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
----
- drivers/usb/host/Kconfig | 10 ++
- drivers/usb/host/ohci-hcd.c | 21 ++++-
- drivers/usb/host/ohci-platform.c | 197 ++++++++++++++++++++++++++++++++++++++
- 3 files changed, 227 insertions(+), 1 deletions(-)
- create mode 100644 drivers/usb/host/ohci-platform.c
-
---- a/drivers/usb/host/Kconfig
-+++ b/drivers/usb/host/Kconfig
-@@ -378,6 +378,16 @@ config USB_CNS3XXX_OHCI
- Enable support for the CNS3XXX SOC's on-chip OHCI controller.
- It is needed for low-speed USB 1.0 device support.
-
-+config USB_OHCI_HCD_PLATFORM
-+ bool "OHCI driver for a platform device"
-+ depends on USB_OHCI_HCD && EXPERIMENTAL
-+ default n
-+ ---help---
-+ Adds an OHCI host driver for a generic platform device, which
-+ provieds a memory space and an irq.
-+
-+ If unsure, say N.
-+
- config USB_OHCI_BIG_ENDIAN_DESC
- bool
- depends on USB_OHCI_HCD
---- a/drivers/usb/host/ohci-hcd.c
-+++ b/drivers/usb/host/ohci-hcd.c
-@@ -1111,6 +1111,11 @@ MODULE_LICENSE ("GPL");
- #define PLATFORM_DRIVER ohci_hcd_ath79_driver
- #endif
-
-+#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
-+#include "ohci-platform.c"
-+#define PLATFORM_OHCI_DRIVER ohci_platform_driver
-+#endif
-+
- #if !defined(PCI_DRIVER) && \
- !defined(PLATFORM_DRIVER) && \
- !defined(OMAP1_PLATFORM_DRIVER) && \
-@@ -1120,7 +1125,8 @@ MODULE_LICENSE ("GPL");
- !defined(PS3_SYSTEM_BUS_DRIVER) && \
- !defined(SM501_OHCI_DRIVER) && \
- !defined(TMIO_OHCI_DRIVER) && \
-- !defined(SSB_OHCI_DRIVER)
-+ !defined(SSB_OHCI_DRIVER) && \
-+ !defined(PLATFORM_OHCI_DRIVER)
- #error "missing bus glue for ohci-hcd"
- #endif
-
-@@ -1204,9 +1210,19 @@ static int __init ohci_hcd_mod_init(void
- goto error_tmio;
- #endif
-
-+#ifdef PLATFORM_OHCI_DRIVER
-+ retval = platform_driver_register(&PLATFORM_OHCI_DRIVER);
-+ if (retval)
-+ goto error_platform;
-+#endif
-+
- return retval;
-
- /* Error path */
-+#ifdef PLATFORM_OHCI_DRIVER
-+ platform_driver_unregister(&PLATFORM_OHCI_DRIVER);
-+ error_platform:
-+#endif
- #ifdef TMIO_OHCI_DRIVER
- platform_driver_unregister(&TMIO_OHCI_DRIVER);
- error_tmio:
-@@ -1260,6 +1276,9 @@ module_init(ohci_hcd_mod_init);
-
- static void __exit ohci_hcd_mod_exit(void)
- {
-+#ifdef PLATFORM_OHCI_DRIVER
-+ platform_driver_unregister(&PLATFORM_OHCI_DRIVER);
-+#endif
- #ifdef TMIO_OHCI_DRIVER
- platform_driver_unregister(&TMIO_OHCI_DRIVER);
- #endif
---- /dev/null
-+++ b/drivers/usb/host/ohci-platform.c
-@@ -0,0 +1,197 @@
-+/*
-+ * Generic platform ohci driver
-+ *
-+ * Copyright 2007 Michael Buesch <m@bues.ch>
-+ * Copyright 2011 Hauke Mehrtens <hauke@hauke-m.de>
-+ *
-+ * Derived from the OHCI-PCI driver
-+ * Copyright 1999 Roman Weissgaerber
-+ * Copyright 2000-2002 David Brownell
-+ * Copyright 1999 Linus Torvalds
-+ * Copyright 1999 Gregory P. Smith
-+ *
-+ * Licensed under the GNU/GPL. See COPYING for details.
-+ */
-+#include <linux/platform_device.h>
-+
-+static int ohci_platform_reset(struct usb_hcd *hcd)
-+{
-+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
-+ int err;
-+
-+ ohci_hcd_init(ohci);
-+ err = ohci_init(ohci);
-+
-+ return err;
-+}
-+
-+static int ohci_platform_start(struct usb_hcd *hcd)
-+{
-+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
-+ int err;
-+
-+ err = ohci_run(ohci);
-+ if (err < 0) {
-+ ohci_err(ohci, "can't start\n");
-+ ohci_stop(hcd);
-+ }
-+
-+ return err;
-+}
-+
-+static const struct hc_driver ohci_platform_hc_driver = {
-+ .description = "platform-usb-ohci",
-+ .product_desc = "Generic Platform OHCI Controller",
-+ .hcd_priv_size = sizeof(struct ohci_hcd),
-+
-+ .irq = ohci_irq,
-+ .flags = HCD_MEMORY | HCD_USB11,
-+
-+ .reset = ohci_platform_reset,
-+ .start = ohci_platform_start,
-+ .stop = ohci_stop,
-+ .shutdown = ohci_shutdown,
-+
-+ .urb_enqueue = ohci_urb_enqueue,
-+ .urb_dequeue = ohci_urb_dequeue,
-+ .endpoint_disable = ohci_endpoint_disable,
-+
-+ .get_frame_number = ohci_get_frame,
-+
-+ .hub_status_data = ohci_hub_status_data,
-+ .hub_control = ohci_hub_control,
-+#ifdef CONFIG_PM
-+ .bus_suspend = ohci_bus_suspend,
-+ .bus_resume = ohci_bus_resume,
-+#endif
-+
-+ .start_port_reset = ohci_start_port_reset,
-+};
-+
-+static int ohci_platform_attach(struct platform_device *dev)
-+{
-+ struct usb_hcd *hcd;
-+ struct resource *res_irq, *res_mem;
-+ int err = -ENOMEM;
-+
-+ hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
-+ dev_name(&dev->dev));
-+ if (!hcd)
-+ goto err_return;
-+
-+ res_irq = platform_get_resource(dev, IORESOURCE_IRQ, 0);
-+ if (!res_irq) {
-+ err = -ENXIO;
-+ goto err_return;
-+ }
-+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
-+ if (!res_mem) {
-+ err = -ENXIO;
-+ goto err_return;
-+ }
-+ hcd->rsrc_start = res_mem->start;
-+ hcd->rsrc_len = res_mem->end - res_mem->start + 1;
-+
-+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
-+ if (!hcd->regs)
-+ goto err_put_hcd;
-+ err = usb_add_hcd(hcd, res_irq->start, IRQF_SHARED);
-+ if (err)
-+ goto err_iounmap;
-+
-+ platform_set_drvdata(dev, hcd);
-+
-+ return err;
-+
-+err_iounmap:
-+ iounmap(hcd->regs);
-+err_put_hcd:
-+ usb_put_hcd(hcd);
-+err_return:
-+ return err;
-+}
-+
-+static int ohci_platform_probe(struct platform_device *dev)
-+{
-+ int err;
-+
-+ if (usb_disabled())
-+ return -ENODEV;
-+
-+ /* We currently always attach BCMA_DEV_USB11_HOSTDEV
-+ * as HOST OHCI. If we want to attach it as Client device,
-+ * we must branch here and call into the (yet to
-+ * be written) Client mode driver. Same for remove(). */
-+
-+ err = ohci_platform_attach(dev);
-+
-+ return err;
-+}
-+
-+static int ohci_platform_remove(struct platform_device *dev)
-+{
-+ struct usb_hcd *hcd;
-+
-+ hcd = platform_get_drvdata(dev);
-+ if (!hcd)
-+ return -ENODEV;
-+
-+ usb_remove_hcd(hcd);
-+ iounmap(hcd->regs);
-+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-+ usb_put_hcd(hcd);
-+
-+ return 0;
-+}
-+
-+static void ohci_platform_shutdown(struct platform_device *dev)
-+{
-+ struct usb_hcd *hcd;
-+
-+ hcd = platform_get_drvdata(dev);
-+ if (!hcd)
-+ return;
-+
-+ if (hcd->driver->shutdown)
-+ hcd->driver->shutdown(hcd);
-+}
-+
-+#ifdef CONFIG_PM
-+
-+static int ohci_platform_suspend(struct platform_device *dev,
-+ pm_message_t state)
-+{
-+
-+ return 0;
-+}
-+
-+static int ohci_platform_resume(struct platform_device *dev)
-+{
-+ struct usb_hcd *hcd = platform_get_drvdata(dev);
-+
-+ ohci_finish_controller_resume(hcd);
-+ return 0;
-+}
-+
-+#else /* !CONFIG_PM */
-+#define ohci_platform_suspend NULL
-+#define ohci_platform_resume NULL
-+#endif /* CONFIG_PM */
-+
-+static const struct platform_device_id ohci_platform_table[] = {
-+ { "ohci-platform", 0 },
-+ { }
-+};
-+MODULE_DEVICE_TABLE(platform, ohci_platform_table);
-+
-+static struct platform_driver ohci_platform_driver = {
-+ .id_table = ohci_platform_table,
-+ .probe = ohci_platform_probe,
-+ .remove = ohci_platform_remove,
-+ .shutdown = ohci_platform_shutdown,
-+ .suspend = ohci_platform_suspend,
-+ .resume = ohci_platform_resume,
-+ .driver = {
-+ .name = "ohci-platform",
-+ }
-+};
projects / openwrt / staging / chunkeey.git / blobdiff