diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.3/001-USB-EHCI-Add-a-generic-platform-device-driver.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.3/001-USB-EHCI-Add-a-generic-platform-device-driver.patch | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/001-USB-EHCI-Add-a-generic-platform-device-driver.patch b/target/linux/ar71xx/patches-3.3/001-USB-EHCI-Add-a-generic-platform-device-driver.patch new file mode 100644 index 0000000000..f94f39c2e8 --- /dev/null +++ b/target/linux/ar71xx/patches-3.3/001-USB-EHCI-Add-a-generic-platform-device-driver.patch @@ -0,0 +1,305 @@ +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 */ |