diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/182-USB-EHCI-Add-a-generic-platform-device-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.2/182-USB-EHCI-Add-a-generic-platform-device-driver.patch | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/182-USB-EHCI-Add-a-generic-platform-device-driver.patch b/target/linux/brcm47xx/patches-3.2/182-USB-EHCI-Add-a-generic-platform-device-driver.patch new file mode 100644 index 000000000..9a8b0cd0f --- /dev/null +++ b/target/linux/brcm47xx/patches-3.2/182-USB-EHCI-Add-a-generic-platform-device-driver.patch @@ -0,0 +1,253 @@ +From 1be00523336ac484c52681f838dfb8a76e8531cd Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Sat, 26 Nov 2011 21:28:56 +0100 +Subject: [PATCH 182/186] 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. + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/usb/host/Kconfig | 10 ++ + drivers/usb/host/ehci-hcd.c | 5 + + drivers/usb/host/ehci-platform.c | 199 ++++++++++++++++++++++++++++++++++++++ + 3 files changed, 214 insertions(+), 0 deletions(-) + create mode 100644 drivers/usb/host/ehci-platform.c + +--- a/drivers/usb/host/Kconfig ++++ b/drivers/usb/host/Kconfig +@@ -388,6 +388,16 @@ 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 +@@ -1329,6 +1329,11 @@ MODULE_LICENSE ("GPL"); + #define PLATFORM_DRIVER ehci_xls_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 +1,199 @@ ++/* ++ * 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/hci_driver.h> ++ ++static int ehci_platform_reset(struct usb_hcd *hcd) ++{ ++ struct platform_device *pdev = to_platform_device(hcd->self.controller); ++ struct usb_hci_pdata *pdata = pdev->dev.platform_data; ++ struct ehci_hcd *ehci = hcd_to_ehci(hcd); ++ int caps_offset = 0; ++ int flags = 0; ++ int retval; ++ ++ if (pdata) { ++ caps_offset = pdata->caps_offset; ++ flags = pdata->flags; ++ } ++ ++ if (flags & USB_HCI_PDATA_HAS_TT_SET) ++ hcd->has_tt = pdata->has_tt; ++ ++ ehci->caps = hcd->regs + caps_offset; ++ retval = ehci_setup(hcd); ++ if (retval) ++ return retval; ++ ++ if (flags & USB_HCI_PDATA_PORT_POWER_SET) ++ ehci_port_power(ehci, pdata->power_set_is_on); ++ ++ 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; ++ ++ 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, ++ } ++}; |