diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch b/target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch new file mode 100644 index 0000000000..51b112a2d3 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.0/0030-USB-OHCI-Add-a-generic-platform-device-driver.patch @@ -0,0 +1,291 @@ +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 +@@ -1114,6 +1114,11 @@ 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) && \ +@@ -1123,7 +1128,8 @@ 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 + +@@ -1207,9 +1213,19 @@ 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: +@@ -1263,6 +1279,9 @@ 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", ++ } ++}; |