forked from Minki/linux
USB: ehci: add bus glue for the Atheros AR71XX/AR724X/AR91XX SoCs
The Atheros AR71XX/AR91XX SoCs have a built-in EHCI controller. This patch adds the necessary glue code to make the generic EHCI driver usable for them. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Gabor Juhos
Greg Kroah-Hartman
parent
01da92f7f6
commit
502fa84195
@ -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
|
||||
|
||||
@ -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
|
||||
|
||||
200
drivers/usb/host/ehci-ath79.c
Normal file
200
drivers/usb/host/ehci-ath79.c
Normal file
@ -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");
|
||||
@ -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)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user