diff options
| -rw-r--r-- | arch/mips/ath79/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/usb/host/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-ath79.c | 200 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 5 |
4 files changed, 217 insertions, 0 deletions
diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig index b05828260f7f..649a2a3bde78 100644 --- a/arch/mips/ath79/Kconfig +++ b/arch/mips/ath79/Kconfig @@ -26,12 +26,15 @@ config ATH79_MACH_PB44 endmenu config SOC_AR71XX + select USB_ARCH_HAS_EHCI def_bool n config SOC_AR724X + select USB_ARCH_HAS_EHCI def_bool n config SOC_AR913X + select USB_ARCH_HAS_EHCI def_bool n config ATH79_DEV_AR913X_WMAC diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index ade009081feb..da3757cec7ac 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -208,6 +208,15 @@ config USB_CNS3XXX_EHCI It is needed for high-speed (480Mbit/sec) USB 2.0 device support. +config USB_EHCI_ATH79 + bool "EHCI support for AR7XXX/AR9XXX SoCs" + depends on USB_EHCI_HCD && (SOC_AR71XX || SOC_AR724X || SOC_AR913X) + select USB_EHCI_ROOT_HUB_TT + default y + ---help--- + Enables support for the built-in EHCI controller present + on the Atheros AR7XXX/AR9XXX SoCs. + config USB_OXU210HP_HCD tristate "OXU210HP HCD support" depends on USB diff --git a/drivers/usb/host/ehci-ath79.c b/drivers/usb/host/ehci-ath79.c new file mode 100644 index 000000000000..74325b87bd77 --- /dev/null +++ b/drivers/usb/host/ehci-ath79.c @@ -0,0 +1,200 @@ +/* + * Bus Glue for Atheros AR7XXX/AR9XXX built-in EHCI 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> + +enum { + EHCI_ATH79_IP_V1 = 0, + EHCI_ATH79_IP_V2, +}; + +static const struct platform_device_id ehci_ath79_id_table[] = { + { + .name = "ar71xx-ehci", + .driver_data = EHCI_ATH79_IP_V1, + }, + { + .name = "ar724x-ehci", + .driver_data = EHCI_ATH79_IP_V2, + }, + { + .name = "ar913x-ehci", + .driver_data = EHCI_ATH79_IP_V2, + }, + { + /* terminating entry */ + }, +}; + +MODULE_DEVICE_TABLE(platform, ehci_ath79_id_table); + +static int ehci_ath79_init(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + struct platform_device *pdev = to_platform_device(hcd->self.controller); + const struct platform_device_id *id; + int ret; + + id = platform_get_device_id(pdev); + if (!id) { + dev_err(hcd->self.controller, "missing device id\n"); + return -EINVAL; + } + + switch (id->driver_data) { + case EHCI_ATH79_IP_V1: + ehci->caps = hcd->regs; + ehci->regs = hcd->regs + + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); + break; + + case EHCI_ATH79_IP_V2: + hcd->has_tt = 1; + + ehci->caps = hcd->regs + 0x100; + ehci->regs = hcd->regs + 0x100 + + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); + break; + + default: + BUG(); + } + + dbg_hcs_params(ehci, "reset"); + dbg_hcc_params(ehci, "reset"); + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + ehci->sbrn = 0x20; + + ehci_reset(ehci); + + ret = ehci_init(hcd); + if (ret) + return ret; + + ehci_port_power(ehci, 0); + + return 0; +} + +static const struct hc_driver ehci_ath79_hc_driver = { + .description = hcd_name, + .product_desc = "Atheros built-in EHCI controller", + .hcd_priv_size = sizeof(struct ehci_hcd), + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + .reset = ehci_ath79_init, + .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, + + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, +}; + +static int ehci_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; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_dbg(&pdev->dev, "no base address specified\n"); + return -ENODEV; + } + + hcd = usb_create_hcd(&ehci_ath79_hc_driver, &pdev->dev, + dev_name(&pdev->dev)); + if (!hcd) + return -ENOMEM; + + 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; + } + + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); + if (ret) + goto err_iounmap; + + return 0; + +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 ret; +} + +static int ehci_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 ehci_ath79_driver = { + .probe = ehci_ath79_probe, + .remove = ehci_ath79_remove, + .id_table = ehci_ath79_id_table, + .driver = { + .owner = THIS_MODULE, + .name = "ath79-ehci", + } +}; + +MODULE_ALIAS(PLATFORM_MODULE_PREFIX "ath79-ehci"); diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 6b20b3b12d65..83b7d5f02a15 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1270,6 +1270,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER s5p_ehci_driver #endif +#ifdef CONFIG_USB_EHCI_ATH79 +#include "ehci-ath79.c" +#define PLATFORM_DRIVER ehci_ath79_driver +#endif + #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \ !defined(XILINX_OF_PLATFORM_DRIVER) |