mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-16 19:45:00 +02:00
1c9cad5dce
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31602 3c298f89-4303-0410-b956-a3cf2f4a3e73
306 lines
8.7 KiB
Diff
306 lines
8.7 KiB
Diff
From 4fa3face95f1ca2e396dd59324a6c6ef01df24cc Mon Sep 17 00:00:00 2001
|
|
From: Hauke Mehrtens <hauke@hauke-m.de>
|
|
Date: Tue, 13 Mar 2012 01:04:48 +0100
|
|
Subject: [PATCH 02/47] USB: EHCI: 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 EHCI controller works like a PCI controller. It will be
|
|
used for the Broadcom bcma and ssb USB EHCI controller.
|
|
|
|
Acked-by: Alan Stern <stern@rowland.harvard.edu>
|
|
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
|
|
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
---
|
|
drivers/usb/host/Kconfig | 10 ++
|
|
drivers/usb/host/ehci-hcd.c | 5 +
|
|
drivers/usb/host/ehci-platform.c | 198 ++++++++++++++++++++++++++++++++++++++
|
|
include/linux/usb/ehci_pdriver.h | 46 +++++++++
|
|
4 files changed, 259 insertions(+), 0 deletions(-)
|
|
create mode 100644 drivers/usb/host/ehci-platform.c
|
|
create mode 100644 include/linux/usb/ehci_pdriver.h
|
|
|
|
--- a/drivers/usb/host/Kconfig
|
|
+++ b/drivers/usb/host/Kconfig
|
|
@@ -403,6 +403,16 @@ config USB_OHCI_HCD_PLATFORM
|
|
|
|
If unsure, say N.
|
|
|
|
+config USB_EHCI_HCD_PLATFORM
|
|
+ bool "Generic EHCI driver for a platform device"
|
|
+ depends on USB_EHCI_HCD && EXPERIMENTAL
|
|
+ default n
|
|
+ ---help---
|
|
+ Adds an EHCI 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/ehci-hcd.c
|
|
+++ b/drivers/usb/host/ehci-hcd.c
|
|
@@ -1381,6 +1381,11 @@ MODULE_LICENSE ("GPL");
|
|
#define PLATFORM_DRIVER ehci_mv_driver
|
|
#endif
|
|
|
|
+#ifdef CONFIG_USB_EHCI_HCD_PLATFORM
|
|
+#include "ehci-platform.c"
|
|
+#define PLATFORM_DRIVER ehci_platform_driver
|
|
+#endif
|
|
+
|
|
#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
|
|
!defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
|
|
!defined(XILINX_OF_PLATFORM_DRIVER)
|
|
--- /dev/null
|
|
+++ b/drivers/usb/host/ehci-platform.c
|
|
@@ -0,0 +1,198 @@
|
|
+/*
|
|
+ * Generic platform ehci driver
|
|
+ *
|
|
+ * Copyright 2007 Steven Brown <sbrown@cortland.com>
|
|
+ * Copyright 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
|
|
+ *
|
|
+ * Derived from the ohci-ssb driver
|
|
+ * Copyright 2007 Michael Buesch <m@bues.ch>
|
|
+ *
|
|
+ * 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
|
|
+ *
|
|
+ * Licensed under the GNU/GPL. See COPYING for details.
|
|
+ */
|
|
+#include <linux/platform_device.h>
|
|
+#include <linux/usb/ehci_pdriver.h>
|
|
+
|
|
+static int ehci_platform_reset(struct usb_hcd *hcd)
|
|
+{
|
|
+ struct platform_device *pdev = to_platform_device(hcd->self.controller);
|
|
+ struct usb_ehci_pdata *pdata = pdev->dev.platform_data;
|
|
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
|
|
+ int retval;
|
|
+
|
|
+ hcd->has_tt = pdata->has_tt;
|
|
+ ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
|
|
+ ehci->big_endian_desc = pdata->big_endian_desc;
|
|
+ ehci->big_endian_mmio = pdata->big_endian_mmio;
|
|
+
|
|
+ ehci->caps = hcd->regs + pdata->caps_offset;
|
|
+ retval = ehci_setup(hcd);
|
|
+ if (retval)
|
|
+ return retval;
|
|
+
|
|
+ if (pdata->port_power_on)
|
|
+ ehci_port_power(ehci, 1);
|
|
+ if (pdata->port_power_off)
|
|
+ ehci_port_power(ehci, 0);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct hc_driver ehci_platform_hc_driver = {
|
|
+ .description = hcd_name,
|
|
+ .product_desc = "Generic Platform EHCI Controller",
|
|
+ .hcd_priv_size = sizeof(struct ehci_hcd),
|
|
+
|
|
+ .irq = ehci_irq,
|
|
+ .flags = HCD_MEMORY | HCD_USB2,
|
|
+
|
|
+ .reset = ehci_platform_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,
|
|
+#if defined(CONFIG_PM)
|
|
+ .bus_suspend = ehci_bus_suspend,
|
|
+ .bus_resume = ehci_bus_resume,
|
|
+#endif
|
|
+ .relinquish_port = ehci_relinquish_port,
|
|
+ .port_handed_over = ehci_port_handed_over,
|
|
+
|
|
+ .update_device = ehci_update_device,
|
|
+
|
|
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
|
|
+};
|
|
+
|
|
+static int __devinit ehci_platform_probe(struct platform_device *dev)
|
|
+{
|
|
+ struct usb_hcd *hcd;
|
|
+ struct resource *res_mem;
|
|
+ int irq;
|
|
+ int err = -ENOMEM;
|
|
+
|
|
+ BUG_ON(!dev->dev.platform_data);
|
|
+
|
|
+ if (usb_disabled())
|
|
+ return -ENODEV;
|
|
+
|
|
+ irq = platform_get_irq(dev, 0);
|
|
+ if (irq < 0) {
|
|
+ pr_err("no irq provieded");
|
|
+ return irq;
|
|
+ }
|
|
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
|
|
+ if (!res_mem) {
|
|
+ pr_err("no memory recourse provieded");
|
|
+ return -ENXIO;
|
|
+ }
|
|
+
|
|
+ hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
|
|
+ dev_name(&dev->dev));
|
|
+ if (!hcd)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ hcd->rsrc_start = res_mem->start;
|
|
+ hcd->rsrc_len = resource_size(res_mem);
|
|
+
|
|
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
|
|
+ pr_err("controller already in use");
|
|
+ err = -EBUSY;
|
|
+ goto err_put_hcd;
|
|
+ }
|
|
+
|
|
+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
|
|
+ if (!hcd->regs)
|
|
+ goto err_release_region;
|
|
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
|
|
+ if (err)
|
|
+ goto err_iounmap;
|
|
+
|
|
+ platform_set_drvdata(dev, hcd);
|
|
+
|
|
+ return err;
|
|
+
|
|
+err_iounmap:
|
|
+ iounmap(hcd->regs);
|
|
+err_release_region:
|
|
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
+err_put_hcd:
|
|
+ usb_put_hcd(hcd);
|
|
+ return err;
|
|
+}
|
|
+
|
|
+static int __devexit ehci_platform_remove(struct platform_device *dev)
|
|
+{
|
|
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
|
|
+
|
|
+ usb_remove_hcd(hcd);
|
|
+ iounmap(hcd->regs);
|
|
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
+ usb_put_hcd(hcd);
|
|
+ platform_set_drvdata(dev, NULL);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#ifdef CONFIG_PM
|
|
+
|
|
+static int ehci_platform_suspend(struct device *dev)
|
|
+{
|
|
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
+ bool wakeup = device_may_wakeup(dev);
|
|
+
|
|
+ ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), wakeup);
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int ehci_platform_resume(struct device *dev)
|
|
+{
|
|
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
|
|
+
|
|
+ ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd));
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#else /* !CONFIG_PM */
|
|
+#define ehci_platform_suspend NULL
|
|
+#define ehci_platform_resume NULL
|
|
+#endif /* CONFIG_PM */
|
|
+
|
|
+static const struct platform_device_id ehci_platform_table[] = {
|
|
+ { "ehci-platform", 0 },
|
|
+ { }
|
|
+};
|
|
+MODULE_DEVICE_TABLE(platform, ehci_platform_table);
|
|
+
|
|
+static const struct dev_pm_ops ehci_platform_pm_ops = {
|
|
+ .suspend = ehci_platform_suspend,
|
|
+ .resume = ehci_platform_resume,
|
|
+};
|
|
+
|
|
+static struct platform_driver ehci_platform_driver = {
|
|
+ .id_table = ehci_platform_table,
|
|
+ .probe = ehci_platform_probe,
|
|
+ .remove = __devexit_p(ehci_platform_remove),
|
|
+ .shutdown = usb_hcd_platform_shutdown,
|
|
+ .driver = {
|
|
+ .owner = THIS_MODULE,
|
|
+ .name = "ehci-platform",
|
|
+ .pm = &ehci_platform_pm_ops,
|
|
+ }
|
|
+};
|
|
--- /dev/null
|
|
+++ b/include/linux/usb/ehci_pdriver.h
|
|
@@ -0,0 +1,46 @@
|
|
+/*
|
|
+ * Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.de>
|
|
+ *
|
|
+ * This program is free software; you can redistribute it and/or modify it
|
|
+ * under the terms of the GNU General Public License as published by the
|
|
+ * Free Software Foundation; either version 2 of the License, or (at your
|
|
+ * option) any later version.
|
|
+ *
|
|
+ * This program is distributed in the hope that it will be useful, but
|
|
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
+ * for more details.
|
|
+ *
|
|
+ * You should have received a copy of the GNU General Public License
|
|
+ * along with this program; if not, write to the Free Software Foundation,
|
|
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
+ */
|
|
+
|
|
+#ifndef __USB_CORE_EHCI_PDRIVER_H
|
|
+#define __USB_CORE_EHCI_PDRIVER_H
|
|
+
|
|
+/**
|
|
+ * struct usb_ehci_pdata - platform_data for generic ehci driver
|
|
+ *
|
|
+ * @caps_offset: offset of the EHCI Capability Registers to the start of
|
|
+ * the io memory region provided to the driver.
|
|
+ * @has_tt: set to 1 if TT is integrated in root hub.
|
|
+ * @port_power_on: set to 1 if the controller needs a power up after
|
|
+ * initialization.
|
|
+ * @port_power_off: set to 1 if the controller needs to be powered down
|
|
+ * after initialization.
|
|
+ *
|
|
+ * These are general configuration options for the EHCI controller. All of
|
|
+ * these options are activating more or less workarounds for some hardware.
|
|
+ */
|
|
+struct usb_ehci_pdata {
|
|
+ int caps_offset;
|
|
+ unsigned has_tt:1;
|
|
+ unsigned has_synopsys_hc_bug:1;
|
|
+ unsigned big_endian_desc:1;
|
|
+ unsigned big_endian_mmio:1;
|
|
+ unsigned port_power_on:1;
|
|
+ unsigned port_power_off:1;
|
|
+};
|
|
+
|
|
+#endif /* __USB_CORE_EHCI_PDRIVER_H */
|