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/*
* OHCI HCD (Host Controller Driver) for USB.
*
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
* (C) Copyright 2002 Hewlett-Packard Company
*
* Bus Glue for rtl8652.
*
* Written by Christopher Hoover <ch@hpl.hp.com>
* Based on fragments of previous driver by Russell King et al.
*
* Modified for LH7A404 from ohci-sa1111.c
* by Durgesh Pattamatta <pattamattad@sharpsec.com>
*
* Modified for pxa27x from ohci-lh7a404.c
* by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
*
* Modified for rtl8652 from ohci-pxa27x.c
* by Lennert Buytenhek <buytenh@wantstofly.org> 28-2-2006
* Based on an earlier driver by Ray Lehtiniemi
*
* This file is licenced under the GPL.
*/
#include <linux/device.h>
#include <linux/signal.h>
#include <linux/platform_device.h>
#include "usb-rtl8652.h"
static void rtl8652_start_hc(struct device *dev)
{
return 0;
}
static void rtl8652_stop_hc(struct device *dev)
{
return 0;
}
static int usb_hcd_rtl8652_probe(const struct hc_driver *driver,
struct platform_device *pdev)
{
int retval;
struct usb_hcd *hcd;
if (pdev->resource[1].flags != IORESOURCE_IRQ) {
pr_debug("resource[1] is not IORESOURCE_IRQ");
return -ENOMEM;
}
hcd = usb_create_hcd(driver, &pdev->dev, "rtl8652");
if (hcd == NULL)
return -ENOMEM;
hcd->rsrc_start = pdev->resource[0].start;
hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
usb_put_hcd(hcd);
retval = -EBUSY;
goto err1;
}
// hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
hcd->regs = (void *)KSEG1ADDR(pdev->resource[0].start);
if (hcd->regs == NULL) {
pr_debug("ioremap failed");
retval = -ENOMEM;
goto err2;
}
rtl8652_start_hc(&pdev->dev);
ohci_hcd_init(hcd_to_ohci(hcd));
retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED);
if (retval == 0)
return retval;
rtl8652_stop_hc(&pdev->dev);
// iounmap(hcd->regs);
err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
usb_put_hcd(hcd);
return retval;
}
static void usb_hcd_rtl8652_remove(struct usb_hcd *hcd,
struct platform_device *pdev)
{
usb_remove_hcd(hcd);
rtl8652_stop_hc(&pdev->dev);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
}
static int __devinit ohci_rtl8652_start(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int ret;
unsigned int fminterval;
if ((ret = ohci_init(ohci)) < 0)
return ret;
fminterval = 0x2edf;
ohci_writel (ohci,(fminterval * 9) / 10, &ohci->regs->periodicstart);
fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
ohci_writel (ohci,fminterval, &ohci->regs->fminterval);
ohci_writel (ohci,0x628, &ohci->regs->lsthresh);
ohci_writel(ohci,0x3e67,&ohci->regs->periodicstart);
if ((ret = ohci_run(ohci)) < 0) {
err("can't start %s", hcd->self.bus_name);
ohci_stop(hcd);
return ret;
}
return 0;
}
static struct hc_driver ohci_rtl8652_hc_driver = {
.description = hcd_name,
.product_desc = "RTL8652 OHCI",
.hcd_priv_size = sizeof(struct ohci_hcd),
.irq = ohci_irq,
.flags = HCD_USB11 | HCD_MEMORY,
.start = ohci_rtl8652_start,
.stop = ohci_stop,
.shutdown = ohci_shutdown,
.urb_enqueue = ohci_urb_enqueue,
.urb_dequeue = ohci_urb_dequeue,
.endpoint_disable = ohci_endpoint_disable,
.get_frame_number = ohci_get_frame,
.hub_status_data = ohci_hub_status_data,
.hub_control = ohci_hub_control,
#if 0
.hub_irq_enable = ohci_rhsc_enable,
#endif
#ifdef CONFIG_PM
.bus_suspend = ohci_bus_suspend,
.bus_resume = ohci_bus_resume,
#endif
.start_port_reset = ohci_start_port_reset,
};
extern int usb_disabled(void);
static int ohci_hcd_rtl8652_drv_probe(struct platform_device *pdev)
{
int ret;
ret = -ENODEV;
if (!usb_disabled())
{
ret = usb_hcd_rtl8652_probe(&ohci_rtl8652_hc_driver, pdev);
}
return ret;
}
static int ohci_hcd_rtl8652_drv_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
usb_hcd_rtl8652_remove(hcd, pdev);
return 0;
}
#ifdef CONFIG_PM
static int ohci_hcd_rtl8652_drv_suspend(struct platform_device *pdev, pm_message_t state)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
rtl8652_stop_hc(&pdev->dev);
hcd->state = HC_STATE_SUSPENDED;
pdev->dev.power.power_state = PMSG_SUSPEND;
return 0;
}
static int ohci_hcd_rtl8652_drv_resume(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int status;
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
rtl8652_start_hc(&pdev->dev);
pdev->dev.power.power_state = PMSG_ON;
usb_hcd_resume_root_hub(hcd);
return 0;
}
#endif
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:rtl8652-ohci");
static struct platform_driver ohci_hcd_rtl8652_driver = {
.probe = ohci_hcd_rtl8652_drv_probe,
.remove = ohci_hcd_rtl8652_drv_remove,
.shutdown = usb_hcd_platform_shutdown,
#ifdef CONFIG_PM
.suspend = ohci_hcd_rtl8652_drv_suspend,
.resume = ohci_hcd_rtl8652_drv_resume,
#endif
.driver = {
.name = "rtl8652-ohci",
.owner = THIS_MODULE,
},
};
/*here register platform rtl8652 usb device.
do it in kernel boot is a good choice*/
static struct platform_device *usb_dev_host = NULL;
static int ohci_rtl8652_init(void)
{
/*register platform device*/
int retval;
//static struct platform_device *usb_dev_host = NULL;
if(usb_dev_host!=NULL)
{ printk("Ohci-rtl8652.c: OHCI device already init\n");
return -1;
}
struct resource r[2];
memset(&r, 0, sizeof(r));
r[0].start = PADDR(OHCI_RTL8652_USB_BASE);
r[0].end = PADDR(OHCI_RTL8652_USB_BASE)+sizeof(struct ohci_regs);
r[0].flags = IORESOURCE_MEM;
r[1].start = r[1].end = RTL8652_USB_IRQ;
r[1].flags = IORESOURCE_IRQ;
usb_dev_host = platform_device_register_simple("rtl8652-ohci", 0, r, 2);
usb_dev_host->dev.coherent_dma_mask = 0xffffffffUL;
usb_dev_host->dev.dma_mask = &usb_dev_host->dev.coherent_dma_mask;
if (IS_ERR(usb_dev_host))
{
retval = PTR_ERR(usb_dev_host);
usb_dev_host=NULL; //wei add
goto err;
}
return 0;
err:
return retval;
}
static void ohci_rtl8652_cleanup(void)
{
if(usb_dev_host==NULL)
{
printk("OHCI already cleanup\n");
return;
}
platform_device_unregister( usb_dev_host);
usb_dev_host=NULL;
}
#if 0
static int __init ohci_hcd_rtl8652_init(void)
{
ohci_rtl8652_init();
return platform_driver_register(&ohci_hcd_rtl8652_driver);
}
static void __exit ohci_hcd_rtl8652_cleanup(void)
{
platform_driver_unregister(&ohci_hcd_rtl8652_driver);
}
module_init(ohci_hcd_rtl8652_init);
module_exit(ohci_hcd_rtl8652_cleanup);
#endif
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