diff options
| -rw-r--r-- | arch/mips/ath79/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/usb/host/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/usb/host/ohci-ath79.c | 151 | ||||
| -rw-r--r-- | drivers/usb/host/ohci-hcd.c | 5 |
4 files changed, 166 insertions, 0 deletions
diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig index 649a2a3bde78..47707410582c 100644 --- a/arch/mips/ath79/Kconfig +++ b/arch/mips/ath79/Kconfig @@ -27,10 +27,12 @@ endmenu config SOC_AR71XX select USB_ARCH_HAS_EHCI + select USB_ARCH_HAS_OHCI def_bool n config SOC_AR724X select USB_ARCH_HAS_EHCI + select USB_ARCH_HAS_OHCI def_bool n config SOC_AR913X diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index da3757cec7ac..fe4beca00009 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -302,6 +302,14 @@ config USB_OHCI_HCD_OMAP3 Enables support for the on-chip OHCI controller on OMAP3 and later chips. +config USB_OHCI_ATH79 + bool "USB OHCI support for the Atheros AR71XX/AR7240 SoCs" + depends on USB_OHCI_HCD && (SOC_AR71XX || SOC_AR724X) + default y + help + Enables support for the built-in OHCI controller present on the + Atheros AR71XX/AR7240 SoCs. + config USB_OHCI_HCD_PPC_SOC bool "OHCI support for on-chip PPC USB controller" depends on USB_OHCI_HCD && (STB03xxx || PPC_MPC52xx) diff --git a/drivers/usb/host/ohci-ath79.c b/drivers/usb/host/ohci-ath79.c new file mode 100644 index 000000000000..ffea3e7cb0a8 --- /dev/null +++ b/drivers/usb/host/ohci-ath79.c @@ -0,0 +1,151 @@ +/* + * OHCI HCD (Host Controller Driver) for USB. + * + * Bus Glue for Atheros AR71XX/AR724X built-in OHCI controller. + * + * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * Copyright (C) 2007 Atheros Communications, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/platform_device.h> + +static int __devinit ohci_ath79_start(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int ret; + + ret = ohci_init(ohci); + if (ret < 0) + return ret; + + ret = ohci_run(ohci); + if (ret < 0) + goto err; + + return 0; + +err: + ohci_stop(hcd); + return ret; +} + +static const struct hc_driver ohci_ath79_hc_driver = { + .description = hcd_name, + .product_desc = "Atheros built-in OHCI controller", + .hcd_priv_size = sizeof(struct ohci_hcd), + + .irq = ohci_irq, + .flags = HCD_USB11 | HCD_MEMORY, + + .start = ohci_ath79_start, + .stop = ohci_stop, + .shutdown = ohci_shutdown, + + .urb_enqueue = ohci_urb_enqueue, + .urb_dequeue = ohci_urb_dequeue, + .endpoint_disable = ohci_endpoint_disable, + + /* + * scheduling support + */ + .get_frame_number = ohci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ohci_hub_status_data, + .hub_control = ohci_hub_control, + .start_port_reset = ohci_start_port_reset, +}; + +static int ohci_ath79_probe(struct platform_device *pdev) +{ + struct usb_hcd *hcd; + struct resource *res; + int irq; + int ret; + + if (usb_disabled()) + return -ENODEV; + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (!res) { + dev_dbg(&pdev->dev, "no IRQ specified\n"); + return -ENODEV; + } + irq = res->start; + + hcd = usb_create_hcd(&ohci_ath79_hc_driver, &pdev->dev, + dev_name(&pdev->dev)); + if (!hcd) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_dbg(&pdev->dev, "no base address specified\n"); + ret = -ENODEV; + goto err_put_hcd; + } + hcd->rsrc_start = res->start; + hcd->rsrc_len = res->end - res->start + 1; + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + dev_dbg(&pdev->dev, "controller already in use\n"); + ret = -EBUSY; + goto err_put_hcd; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + dev_dbg(&pdev->dev, "error mapping memory\n"); + ret = -EFAULT; + goto err_release_region; + } + + ohci_hcd_init(hcd_to_ohci(hcd)); + + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); + if (ret) + goto err_stop_hcd; + + return 0; + +err_stop_hcd: + iounmap(hcd->regs); +err_release_region: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +err_put_hcd: + usb_put_hcd(hcd); + return ret; +} + +static int ohci_ath79_remove(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + + usb_remove_hcd(hcd); + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); + + return 0; +} + +static struct platform_driver ohci_hcd_ath79_driver = { + .probe = ohci_ath79_probe, + .remove = ohci_ath79_remove, + .shutdown = usb_hcd_platform_shutdown, + .driver = { + .name = "ath79-ohci", + .owner = THIS_MODULE, + }, +}; + +MODULE_ALIAS(PLATFORM_MODULE_PREFIX "ath79-ohci"); diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index d55723514860..8c8dc6559ac7 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1105,6 +1105,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ohci_hcd_cns3xxx_driver #endif +#ifdef CONFIG_USB_OHCI_ATH79 +#include "ohci-ath79.c" +#define PLATFORM_DRIVER ohci_hcd_ath79_driver +#endif + #if !defined(PCI_DRIVER) && \ !defined(PLATFORM_DRIVER) && \ !defined(OMAP1_PLATFORM_DRIVER) && \ |