/*
- * EHCI HCD (Host Controller Driver) for USB.
+ * Bus Glue for Atheros AR71xx built-in EHCI controller.
*
- * Copyright (C) 2007 Atheros Communications, Inc.
- * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
- * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
- * Bus Glue for Atheros AR71xx built-in EHCI controller
+ * 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>
#include <linux/delay.h>
+#include <asm/mach-ar71xx/platform.h>
+
extern int usb_disabled(void);
-static void ar71xx_start_ehci(struct platform_device *pdev)
+static int ehci_ar71xx_init(struct usb_hcd *hcd)
{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int ret;
+
+ ehci->caps = hcd->regs;
+ ehci->regs = hcd->regs +
+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+ 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 void ar71xx_stop_ehci(struct platform_device *pdev)
+static int ehci_ar91xx_init(struct usb_hcd *hcd)
{
- /*
- * TODO: implement
- */
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int ret;
+
+ ehci->caps = hcd->regs + 0x100;
+ ehci->regs = hcd->regs + 0x100 +
+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+ hcd->has_tt = 1;
+ ehci->sbrn = 0x20;
+
+ ehci_reset(ehci);
+
+ ret = ehci_init(hcd);
+ if (ret)
+ return ret;
+
+ ehci_port_power(ehci, 0);
+
+ return 0;
}
-int usb_ehci_ar71xx_probe(const struct hc_driver *driver,
- struct usb_hcd **hcd_out,
- struct platform_device *pdev)
+static int ehci_ar71xx_probe(const struct hc_driver *driver,
+ struct usb_hcd **hcd_out,
+ struct platform_device *pdev)
{
struct usb_hcd *hcd;
- struct ehci_hcd *ehci;
struct resource *res;
int irq;
int ret;
}
irq = res->start;
- hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
- if (!hcd)
- return -ENOMEM;
-
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_dbg(&pdev->dev, "no base address specified for %s\n",
pdev->dev.bus_id);
- ret = -ENODEV;
- goto err_put_hcd;
+ return -ENODEV;
}
+
+ hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
+ if (!hcd)
+ return -ENOMEM;
+
hcd->rsrc_start = res->start;
hcd->rsrc_len = res->end - res->start + 1;
goto err_release_region;
}
- ar71xx_start_ehci(pdev);
-
-#if 0
- ehci = hcd_to_ehci(hcd);
- ehci->caps = hcd->regs;
- ehci->regs = hcd->regs + HC_LENGTH(readl(&ehci->caps->hc_capbase));
- ehci->hcs_params = readl(&ehci->caps->hcs_params);
-#endif
-
ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
if (ret)
- goto err_stop_ehc;
+ goto err_iounmap;
return 0;
-err_stop_ehc:
- ar71xx_stop_ehci(pdev);
+ err_iounmap:
iounmap(hcd->regs);
-err_release_region:
+ err_release_region:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-err_put_hcd:
+ err_put_hcd:
usb_put_hcd(hcd);
return ret;
}
-/* may be called without controller electrically present */
-/* may be called with controller, bus, and devices active */
-
-/**
- * usb_ehci_ar71xx_remove - shutdown processing for AR71xx-based HCDs
- * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
- *
- * Reverses the effect of usb_hcd_ar71xx_probe(), first invoking
- * the HCD's stop() method. It is always called from a thread
- * context, normally "rmmod", "apmd", or something similar.
- *
- */
-static void usb_ehci_ar71xx_remove(struct usb_hcd *hcd,
- struct platform_device *pdev)
+static void ehci_ar71xx_remove(struct usb_hcd *hcd,
+ struct platform_device *pdev)
{
usb_remove_hcd(hcd);
- ar71xx_stop_ehci(pdev);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
}
static const struct hc_driver ehci_ar71xx_hc_driver = {
- .description = hcd_name,
- .product_desc = "Atheros AR71xx built-in EHCI controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /*
- * basic lifecycle operations
- */
- .reset = ehci_init,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- /*
- * managing i/o requests and associated device resources
- */
+ .description = hcd_name,
+ .product_desc = "Atheros AR71xx built-in EHCI controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ .reset = ehci_ar71xx_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,
- /*
- * scheduling support
- */
- .get_frame_number = ehci_get_frame,
+ .get_frame_number = ehci_get_frame,
- /*
- * root hub support
- */
.hub_status_data = ehci_hub_status_data,
.hub_control = ehci_hub_control,
#ifdef CONFIG_PM
.hub_suspend = ehci_hub_suspend,
.hub_resume = ehci_hub_resume,
#endif
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
};
-static int ehci_hcd_ar71xx_drv_probe(struct platform_device *pdev)
+static const struct hc_driver ehci_ar91xx_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "Atheros AR91xx built-in EHCI controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ .reset = ehci_ar91xx_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,
+
+ .get_frame_number = ehci_get_frame,
+
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+#ifdef CONFIG_PM
+ .hub_suspend = ehci_hub_suspend,
+ .hub_resume = ehci_hub_resume,
+#endif
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+};
+
+static int ehci_ar71xx_driver_probe(struct platform_device *pdev)
{
+ struct ar71xx_ehci_platform_data *pdata;
struct usb_hcd *hcd = NULL;
int ret;
- ret = -ENODEV;
- if (!usb_disabled())
- ret = usb_ehci_ar71xx_probe(&ehci_ar71xx_hc_driver, &hcd, pdev);
+ if (usb_disabled())
+ return -ENODEV;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data specified for %s\n",
+ pdev->dev.bus_id);
+ return -ENODEV;
+ }
+
+ if (pdata->is_ar91xx)
+ ret = ehci_ar71xx_probe(&ehci_ar91xx_hc_driver, &hcd, pdev);
+ else
+ ret = ehci_ar71xx_probe(&ehci_ar71xx_hc_driver, &hcd, pdev);
return ret;
}
-static int ehci_hcd_ar71xx_drv_remove(struct platform_device *pdev)
+static int ehci_ar71xx_driver_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
- usb_ehci_ar71xx_remove(hcd, pdev);
+ ehci_ar71xx_remove(hcd, pdev);
return 0;
}
-static struct platform_driver ehci_hcd_ar71xx_driver = {
- .probe = ehci_hcd_ar71xx_drv_probe,
- .remove = ehci_hcd_ar71xx_drv_remove,
- .shutdown = usb_hcd_platform_shutdown,
+MODULE_ALIAS("platform:ar71xx-ehci");
+
+static struct platform_driver ehci_ar71xx_driver = {
+ .probe = ehci_ar71xx_driver_probe,
+ .remove = ehci_ar71xx_driver_remove,
.driver = {
.name = "ar71xx-ehci",
- .bus = &platform_bus_type
}
};
-
-MODULE_ALIAS("ar71xx-ehci");
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