diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/0031-USB-EHCI-Add-a-generic-platform-device-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.2/0031-USB-EHCI-Add-a-generic-platform-device-driver.patch | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/0031-USB-EHCI-Add-a-generic-platform-device-driver.patch b/target/linux/brcm47xx/patches-3.2/0031-USB-EHCI-Add-a-generic-platform-device-driver.patch new file mode 100644 index 0000000000..8cc0f07776 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.2/0031-USB-EHCI-Add-a-generic-platform-device-driver.patch @@ -0,0 +1,265 @@ +From 2ade1c32109d2f17fdfc0b414411d4ee7f828706 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 18/30] 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 | 211 ++++++++++++++++++++++++++++++++++++++ + 3 files changed, 226 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 +1,211 @@ ++/* ++ * Generic platform ehci driver ++ * ++ * Copyright 2007 Steven Brown <sbrown@cortland.com> ++ * Copyright 2010-2011 Hauke Mehrtens <hauke@hauke-m.de> ++ * ++ * Derived from the ohci-ssb driver ++ * Copyright 2007 Michael Buesch <mb@bu3sch.de> ++ * ++ * 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> ++ ++static int ehci_platform_reset(struct usb_hcd *hcd) ++{ ++ struct ehci_hcd *ehci = hcd_to_ehci(hcd); ++ int retval; ++ ++ ehci->caps = hcd->regs; ++ ehci->regs = hcd->regs + ++ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); ++ ++ dbg_hcs_params(ehci, "reset"); ++ dbg_hcc_params(ehci, "reset"); ++ ++ /* cache this readonly data; minimize chip reads */ ++ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); ++ ++ retval = ehci_halt(ehci); ++ if (retval) ++ return retval; ++ ++ /* data structure init */ ++ retval = ehci_init(hcd); ++ if (retval) ++ return retval; ++ ++ ehci_reset(ehci); ++ ++ ehci_port_power(ehci, 1); ++ ++ return retval; ++} ++ ++static const struct hc_driver ehci_platform_hc_driver = { ++ .description = "platform-usb-ehci", ++ .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 ehci_platform_attach(struct platform_device *dev) ++{ ++ struct usb_hcd *hcd; ++ struct resource *res_irq, *res_mem; ++ int err = -ENOMEM; ++ ++ hcd = usb_create_hcd(&ehci_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; ++ ++ /* ++ * start & size modified per sbutils.c ++ */ ++ 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 ehci_platform_probe(struct platform_device *dev) ++{ ++ int err; ++ ++ if (usb_disabled()) ++ return -ENODEV; ++ ++ err = ehci_platform_attach(dev); ++ ++ return err; ++} ++ ++static int ehci_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 ehci_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 ehci_platform_suspend(struct platform_device *dev, ++ pm_message_t state) ++{ ++ return 0; ++} ++ ++static int ehci_platform_resume(struct platform_device *dev) ++{ ++ struct usb_hcd *hcd = platform_get_drvdata(dev); ++ ++ ehci_finish_controller_resume(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 struct platform_driver ehci_platform_driver = { ++ .id_table = ehci_platform_table, ++ .probe = ehci_platform_probe, ++ .remove = ehci_platform_remove, ++ .shutdown = ehci_platform_shutdown, ++ .suspend = ehci_platform_suspend, ++ .resume = ehci_platform_resume, ++ .driver = { ++ .name = "ehci-platform", ++ } ++}; |