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[PATCH] USB: OHCI for AU1200

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ALCHEMY:  Add OHCI support for AU1200

Updated by moving the OHCI support out of the EHCI patch.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jordan Crouse 2006-01-20 14:09:54 -08:00 committed by Greg Kroah-Hartman
parent 76fa9a240d
commit d5fb7f1b5b
2 changed files with 88 additions and 16 deletions
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2
arch/mips/au1000/common/platform.c
View file

@ -20,7 +20,7 @@
static struct resource au1xxx_usb_ohci_resources[] = { static struct resource au1xxx_usb_ohci_resources[] = {
[0] = { [0] = {
.start = USB_OHCI_BASE, .start = USB_OHCI_BASE,
.end = USB_OHCI_BASE + USB_OHCI_LEN, .end = USB_OHCI_BASE + USB_OHCI_LEN - 1,
.flags = IORESOURCE_MEM, .flags = IORESOURCE_MEM,
}, },
[1] = { [1] = {

102
drivers/usb/host/ohci-au1xxx.c
View file

@ -23,6 +23,8 @@
#include <asm/mach-au1x00/au1000.h> #include <asm/mach-au1x00/au1000.h>
#ifndef CONFIG_SOC_AU1200
#define USBH_ENABLE_BE (1<<0) #define USBH_ENABLE_BE (1<<0)
#define USBH_ENABLE_C (1<<1) #define USBH_ENABLE_C (1<<1)
#define USBH_ENABLE_E (1<<2) #define USBH_ENABLE_E (1<<2)
@ -37,21 +39,68 @@
#error not byte order defined #error not byte order defined
#endif #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); 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__ printk(KERN_DEBUG __FILE__
": starting Au1xxx OHCI USB Controller\n"); ": starting Au1xxx OHCI USB Controller\n");
/* enable host controller */ /* enable host controller */
#ifndef CONFIG_SOC_AU1200
au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG); au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG);
udelay(1000); udelay(1000);
au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG); au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG);
udelay(1000); 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 */
/* wait for reset complete (read register twice; see au1500 errata) */ /* wait for reset complete (read register twice; see au1500 errata) */
while (au_readl(USB_HOST_CONFIG), while (au_readl(USB_HOST_CONFIG),
!(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD)) !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
@ -61,13 +110,25 @@ static void au1xxx_start_hc(struct platform_device *dev)
": Clock to USB host has been enabled \n"); ": 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__ printk(KERN_DEBUG __FILE__
": stopping Au1xxx OHCI USB Controller\n"); ": stopping Au1xxx OHCI USB Controller\n");
#ifndef CONFIG_SOC_AU1200
/* Disable clock */ /* Disable clock */
au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG); au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
#else /* Au1200 */
/* 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 */
} }
@ -78,7 +139,7 @@ static void au1xxx_stop_hc(struct platform_device *dev)
/** /**
* usb_hcd_au1xxx_probe - initialize Au1xxx-based HCDs * usb_ohci_au1xxx_probe - initialize Au1xxx-based HCDs
* Context: !in_interrupt() * Context: !in_interrupt()
* *
* Allocates basic resources for this USB host controller, and * Allocates basic resources for this USB host controller, and
@ -86,14 +147,25 @@ static void au1xxx_stop_hc(struct platform_device *dev)
* through the hotplug entry's driver_data. * through the hotplug entry's driver_data.
* *
*/ */
int usb_hcd_au1xxx_probe (const struct hc_driver *driver, static int usb_ohci_au1xxx_probe(const struct hc_driver *driver,
struct platform_device *dev) struct platform_device *dev)
{ {
int retval; int retval;
struct usb_hcd *hcd; struct usb_hcd *hcd;
if(dev->resource[1].flags != IORESOURCE_IRQ) { #if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT)
pr_debug ("resource[1] is not IORESOURCE_IRQ"); /* Au1200 AB USB does not support coherent memory */
if (!(read_c0_prid() & 0xff)) {
pr_info("%s: this is chip revision AB !!\n",
dev->dev.name);
pr_info("%s: update your board or re-configure the kernel\n",
dev->dev.name);
return -ENODEV;
}
#endif
if (dev->resource[1].flags != IORESOURCE_IRQ) {
pr_debug("resource[1] is not IORESOURCE_IRQ\n");
return -ENOMEM; return -ENOMEM;
} }
@ -104,26 +176,26 @@ int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1; hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
pr_debug("request_mem_region failed"); pr_debug("request_mem_region failed\n");
retval = -EBUSY; retval = -EBUSY;
goto err1; goto err1;
} }
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) { if (!hcd->regs) {
pr_debug("ioremap failed"); pr_debug("ioremap failed\n");
retval = -ENOMEM; retval = -ENOMEM;
goto err2; goto err2;
} }
au1xxx_start_hc(dev); au1xxx_start_ohc(dev);
ohci_hcd_init(hcd_to_ohci(hcd)); ohci_hcd_init(hcd_to_ohci(hcd));
retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT); retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT | SA_SHIRQ);
if (retval == 0) if (retval == 0)
return retval; return retval;
au1xxx_stop_hc(dev); au1xxx_stop_ohc(dev);
iounmap(hcd->regs); iounmap(hcd->regs);
err2: err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len); release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
@ -146,10 +218,10 @@ int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
* context, normally "rmmod", "apmd", or something similar. * 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)
{ {
usb_remove_hcd(hcd); usb_remove_hcd(hcd);
au1xxx_stop_hc(dev); au1xxx_stop_ohc(dev);
iounmap(hcd->regs); iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len); release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd); usb_put_hcd(hcd);
@ -235,7 +307,7 @@ static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
if (usb_disabled()) if (usb_disabled())
return -ENODEV; return -ENODEV;
ret = usb_hcd_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev); ret = usb_ohci_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev);
return ret; return ret;
} }
@ -243,7 +315,7 @@ static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev)
{ {
struct usb_hcd *hcd = platform_get_drvdata(pdev); struct usb_hcd *hcd = platform_get_drvdata(pdev);
usb_hcd_au1xxx_remove(hcd, pdev); usb_ohci_au1xxx_remove(hcd, pdev);
return 0; return 0;
} }
/*TBD*/ /*TBD*/