diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/181-USB-OHCI-Add-a-generic-platform-device-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.2/181-USB-OHCI-Add-a-generic-platform-device-driver.patch | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/181-USB-OHCI-Add-a-generic-platform-device-driver.patch b/target/linux/brcm47xx/patches-3.2/181-USB-OHCI-Add-a-generic-platform-device-driver.patch new file mode 100644 index 000000000..8832f22fa --- /dev/null +++ b/target/linux/brcm47xx/patches-3.2/181-USB-OHCI-Add-a-generic-platform-device-driver.patch @@ -0,0 +1,237 @@ +From 2232a2ab6015496fecdfad68a9d6794312a9b2f2 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 181/186] 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 | 5 + + drivers/usb/host/ohci-platform.c | 183 ++++++++++++++++++++++++++++++++++++++ + 3 files changed, 198 insertions(+), 0 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 +@@ -1116,6 +1116,11 @@ MODULE_LICENSE ("GPL"); + #define PLATFORM_DRIVER ohci_xls_driver + #endif + ++#ifdef CONFIG_USB_OHCI_HCD_PLATFORM ++#include "ohci-platform.c" ++#define PLATFORM_DRIVER ohci_platform_driver ++#endif ++ + #if !defined(PCI_DRIVER) && \ + !defined(PLATFORM_DRIVER) && \ + !defined(OMAP1_PLATFORM_DRIVER) && \ +--- /dev/null ++++ b/drivers/usb/host/ohci-platform.c +@@ -0,0 +1,183 @@ ++/* ++ * Generic platform ohci driver ++ * ++ * Copyright 2007 Michael Buesch <m@bues.ch> ++ * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de> ++ * ++ * Derived from the OCHI-SSB driver ++ * 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 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 = hcd_name, ++ .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 __devinit ohci_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(&ohci_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 ohci_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 ohci_platform_suspend(struct device *dev) ++{ ++ return 0; ++} ++ ++static int ohci_platform_resume(struct device *dev) ++{ ++ struct usb_hcd *hcd = dev_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 const struct dev_pm_ops ohci_platform_pm_ops = { ++ .suspend = ohci_platform_suspend, ++ .resume = ohci_platform_resume, ++}; ++ ++static struct platform_driver ohci_platform_driver = { ++ .id_table = ohci_platform_table, ++ .probe = ohci_platform_probe, ++ .remove = __devexit_p(ohci_platform_remove), ++ .shutdown = usb_hcd_platform_shutdown, ++ .driver = { ++ .owner = THIS_MODULE, ++ .name = "ohci-platform", ++ .pm = &ohci_platform_pm_ops, ++ } ++}; |