* This file is licenced under the GPL.
*/
+#include <linux/platform_device.h>
+#include <linux/signal.h>
+
#include <asm/mach-au1x00/au1000.h>
+#ifndef CONFIG_SOC_AU1200
+
#define USBH_ENABLE_BE (1<<0)
#define USBH_ENABLE_C (1<<1)
#define USBH_ENABLE_E (1<<2)
#error not byte order defined
#endif
+#else /* Au1200 */
+
+#define USB_HOST_CONFIG (USB_MSR_BASE + USB_MSR_MCFG)
+#define USB_MCFG_PFEN (1<<31)
+#define USB_MCFG_RDCOMB (1<<30)
+#define USB_MCFG_SSDEN (1<<23)
+#define USB_MCFG_OHCCLKEN (1<<16)
+#define USB_MCFG_UCAM (1<<7)
+#define USB_MCFG_OBMEN (1<<1)
+#define USB_MCFG_OMEMEN (1<<0)
+
+#define USBH_ENABLE_CE USB_MCFG_OHCCLKEN
+#ifdef CONFIG_DMA_COHERENT
+#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \
+ | USB_MCFG_PFEN | USB_MCFG_RDCOMB \
+ | USB_MCFG_SSDEN | USB_MCFG_UCAM \
+ | USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
+#else
+#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \
+ | USB_MCFG_PFEN | USB_MCFG_RDCOMB \
+ | USB_MCFG_SSDEN \
+ | USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
+#endif
+#define USBH_DISABLE (USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
+
+#endif /* Au1200 */
+
extern int usb_disabled(void);
/*-------------------------------------------------------------------------*/
-static void au1xxx_start_hc(struct platform_device *dev)
+static void au1xxx_start_ohc(struct platform_device *dev)
{
printk(KERN_DEBUG __FILE__
": starting Au1xxx OHCI USB Controller\n");
/* enable host controller */
+
+#ifndef CONFIG_SOC_AU1200
+
au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG);
udelay(1000);
au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG);
udelay(1000);
+#else /* Au1200 */
+
+ /* write HW defaults again in case Yamon cleared them */
+ if (au_readl(USB_HOST_CONFIG) == 0) {
+ au_writel(0x00d02000, USB_HOST_CONFIG);
+ au_readl(USB_HOST_CONFIG);
+ udelay(1000);
+ }
+ au_writel(USBH_ENABLE_CE | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+ au_readl(USB_HOST_CONFIG);
+ udelay(1000);
+ au_writel(USBH_ENABLE_INIT | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+ au_readl(USB_HOST_CONFIG);
+ udelay(1000);
+
+#endif /* Au1200 */
+
+#ifndef CONFIG_SOC_AU1200
/* wait for reset complete (read register twice; see au1500 errata) */
while (au_readl(USB_HOST_CONFIG),
!(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
+#endif
udelay(1000);
printk(KERN_DEBUG __FILE__
": Clock to USB host has been enabled \n");
}
-static void au1xxx_stop_hc(struct platform_device *dev)
+static void au1xxx_stop_ohc(struct platform_device *dev)
{
printk(KERN_DEBUG __FILE__
": stopping Au1xxx OHCI USB Controller\n");
- /* Disable clock */
- au_writel(readl((void *)USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
-}
-
-
-/*-------------------------------------------------------------------------*/
+#ifndef CONFIG_SOC_AU1200
+ /* Disable clock */
+ au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
-static irqreturn_t usb_hcd_au1xxx_hcim_irq (int irq, void *__hcd,
- struct pt_regs * r)
-{
- struct usb_hcd *hcd = __hcd;
+#else /* Au1200 */
- return usb_hcd_irq(irq, hcd, r);
+ /* Disable mem */
+ au_writel(~USBH_DISABLE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+ udelay(1000);
+ /* Disable clock */
+ au_writel(~USBH_ENABLE_CE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
+ au_readl(USB_HOST_CONFIG);
+#endif /* Au1200 */
}
-/*-------------------------------------------------------------------------*/
-void usb_hcd_au1xxx_remove (struct usb_hcd *, struct platform_device *);
+/*-------------------------------------------------------------------------*/
/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */
/**
- * usb_hcd_au1xxx_probe - initialize Au1xxx-based HCDs
+ * usb_ohci_au1xxx_probe - initialize Au1xxx-based HCDs
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller, and
* through the hotplug entry's driver_data.
*
*/
-int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
- struct usb_hcd **hcd_out,
+static int usb_ohci_au1xxx_probe(const struct hc_driver *driver,
struct platform_device *dev)
{
int retval;
- struct usb_hcd *hcd = 0;
-
- unsigned int *addr = NULL;
-
- if (!request_mem_region(dev->resource[0].start,
- dev->resource[0].end
- - dev->resource[0].start + 1, hcd_name)) {
- pr_debug("request_mem_region failed");
- return -EBUSY;
+ struct usb_hcd *hcd;
+
+#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT)
+ /* Au1200 AB USB does not support coherent memory */
+ if (!(read_c0_prid() & 0xff)) {
+ pr_info("%s: this is chip revision AB !!\n",
+ dev->name);
+ pr_info("%s: update your board or re-configure the kernel\n",
+ dev->name);
+ return -ENODEV;
}
+#endif
- au1xxx_start_hc(dev);
-
- addr = ioremap(dev->resource[0].start,
- dev->resource[0].end
- - dev->resource[0].start + 1);
- if (!addr) {
- pr_debug("ioremap failed");
- retval = -ENOMEM;
- goto err1;
+ if (dev->resource[1].flags != IORESOURCE_IRQ) {
+ pr_debug("resource[1] is not IORESOURCE_IRQ\n");
+ return -ENOMEM;
}
- if(dev->resource[1].flags != IORESOURCE_IRQ) {
- pr_debug ("resource[1] is not IORESOURCE_IRQ");
- retval = -ENOMEM;
- goto err1;
- }
+ hcd = usb_create_hcd(driver, &dev->dev, "au1xxx");
+ if (!hcd)
+ return -ENOMEM;
+ hcd->rsrc_start = dev->resource[0].start;
+ hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
- hcd = usb_create_hcd(driver);
- if (hcd == NULL) {
- pr_debug ("usb_create_hcd failed");
- retval = -ENOMEM;
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ pr_debug("request_mem_region failed\n");
+ retval = -EBUSY;
goto err1;
}
- ohci_hcd_init(hcd_to_ohci(hcd));
- hcd->irq = dev->resource[1].start;
- hcd->regs = addr;
- hcd->self.controller = &dev->dev;
-
- retval = hcd_buffer_create (hcd);
- if (retval != 0) {
- pr_debug ("pool alloc fail");
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ pr_debug("ioremap failed\n");
+ retval = -ENOMEM;
goto err2;
}
- retval = request_irq (hcd->irq, usb_hcd_au1xxx_hcim_irq, SA_INTERRUPT,
- hcd->driver->description, hcd);
- if (retval != 0) {
- pr_debug("request_irq failed");
- retval = -EBUSY;
- goto err3;
- }
-
- pr_debug ("%s (Au1xxx) at 0x%p, irq %d",
- hcd->driver->description, hcd->regs, hcd->irq);
-
- hcd->self.bus_name = "au1xxx";
-
- usb_register_bus (&hcd->self);
+ au1xxx_start_ohc(dev);
+ ohci_hcd_init(hcd_to_ohci(hcd));
- if ((retval = driver->start (hcd)) < 0)
- {
- usb_hcd_au1xxx_remove(hcd, dev);
- printk("bad driver->start\n");
+ retval = usb_add_hcd(hcd, dev->resource[1].start, IRQF_DISABLED | IRQF_SHARED);
+ if (retval == 0)
return retval;
- }
- *hcd_out = hcd;
- return 0;
-
- err3:
- hcd_buffer_destroy (hcd);
+ au1xxx_stop_ohc(dev);
+ iounmap(hcd->regs);
err2:
- usb_put_hcd(hcd);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
- au1xxx_stop_hc(dev);
- release_mem_region(dev->resource[0].start,
- dev->resource[0].end
- - dev->resource[0].start + 1);
+ usb_put_hcd(hcd);
return retval;
}
* context, normally "rmmod", "apmd", or something similar.
*
*/
-void usb_hcd_au1xxx_remove (struct usb_hcd *hcd, struct platform_device *dev)
+static void usb_ohci_au1xxx_remove(struct usb_hcd *hcd, struct platform_device *dev)
{
- pr_debug ("remove: %s, state %x", hcd->self.bus_name, hcd->state);
-
- if (in_interrupt ())
- BUG ();
-
- hcd->state = USB_STATE_QUIESCING;
-
- pr_debug ("%s: roothub graceful disconnect", hcd->self.bus_name);
- usb_disconnect (&hcd->self.root_hub);
-
- hcd->driver->stop (hcd);
- hcd->state = USB_STATE_HALT;
-
- free_irq (hcd->irq, hcd);
- hcd_buffer_destroy (hcd);
-
- usb_deregister_bus (&hcd->self);
-
- au1xxx_stop_hc(dev);
- release_mem_region(dev->resource[0].start,
- dev->resource[0].end
- - dev->resource[0].start + 1);
+ usb_remove_hcd(hcd);
+ au1xxx_stop_ohc(dev);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
}
/*-------------------------------------------------------------------------*/
* generic hardware linkage
*/
.irq = ohci_irq,
- .flags = HCD_USB11,
+ .flags = HCD_USB11 | HCD_MEMORY,
/*
* basic lifecycle operations
*/
.start = ohci_au1xxx_start,
-#ifdef CONFIG_PM
- /* suspend: ohci_au1xxx_suspend, -- tbd */
- /* resume: ohci_au1xxx_resume, -- tbd */
-#endif /*CONFIG_PM*/
.stop = ohci_stop,
+ .shutdown = ohci_shutdown,
/*
* managing i/o requests and associated device resources
*/
.hub_status_data = ohci_hub_status_data,
.hub_control = ohci_hub_control,
+ .hub_irq_enable = ohci_rhsc_enable,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
};
/*-------------------------------------------------------------------------*/
-static int ohci_hcd_au1xxx_drv_probe(struct device *dev)
+static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct usb_hcd *hcd = NULL;
int ret;
pr_debug ("In ohci_hcd_au1xxx_drv_probe");
if (usb_disabled())
return -ENODEV;
- ret = usb_hcd_au1xxx_probe(&ohci_au1xxx_hc_driver, &hcd, pdev);
-
- if (ret == 0)
- dev_set_drvdata(dev, hcd);
-
+ ret = usb_ohci_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev);
return ret;
}
-static int ohci_hcd_au1xxx_drv_remove(struct device *dev)
+static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
- usb_hcd_au1xxx_remove(hcd, pdev);
- dev_set_drvdata(dev, NULL);
+ usb_ohci_au1xxx_remove(hcd, pdev);
return 0;
}
/*TBD*/
-/*static int ohci_hcd_au1xxx_drv_suspend(struct device *dev)
+/*static int ohci_hcd_au1xxx_drv_suspend(struct platform_device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
return 0;
}
-static int ohci_hcd_au1xxx_drv_resume(struct device *dev)
+static int ohci_hcd_au1xxx_drv_resume(struct platform_device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
return 0;
}
*/
-static struct device_driver ohci_hcd_au1xxx_driver = {
- .name = "au1xxx-ohci",
- .bus = &platform_bus_type,
+static struct platform_driver ohci_hcd_au1xxx_driver = {
.probe = ohci_hcd_au1xxx_drv_probe,
.remove = ohci_hcd_au1xxx_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
/*.suspend = ohci_hcd_au1xxx_drv_suspend, */
/*.resume = ohci_hcd_au1xxx_drv_resume, */
+ .driver = {
+ .name = "au1xxx-ohci",
+ .owner = THIS_MODULE,
+ },
};
static int __init ohci_hcd_au1xxx_init (void)
pr_debug ("block sizes: ed %d td %d\n",
sizeof (struct ed), sizeof (struct td));
- return driver_register(&ohci_hcd_au1xxx_driver);
+ return platform_driver_register(&ohci_hcd_au1xxx_driver);
}
static void __exit ohci_hcd_au1xxx_cleanup (void)
{
- driver_unregister(&ohci_hcd_au1xxx_driver);
+ platform_driver_unregister(&ohci_hcd_au1xxx_driver);
}
module_init (ohci_hcd_au1xxx_init);
git://git.onelab.eu / linux-2.6.git / blobdiff