[PATCH] USB: OHCI for AU1200
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>hifive-unleashed-5.1
Jordan Crouse
Greg Kroah-Hartman
parent
76fa9a240d
commit
d5fb7f1b5b
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@ -20,7 +20,7 @@
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static struct resource au1xxx_usb_ohci_resources[] = {
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[0] = {
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.start = USB_OHCI_BASE,
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.end = USB_OHCI_BASE + USB_OHCI_LEN,
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.end = USB_OHCI_BASE + USB_OHCI_LEN - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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@ -23,6 +23,8 @@
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#include <asm/mach-au1x00/au1000.h>
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#ifndef CONFIG_SOC_AU1200
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#define USBH_ENABLE_BE (1<<0)
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#define USBH_ENABLE_C (1<<1)
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#define USBH_ENABLE_E (1<<2)
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@ -37,21 +39,68 @@
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#error not byte order defined
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#endif
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#else /* Au1200 */
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#define USB_HOST_CONFIG (USB_MSR_BASE + USB_MSR_MCFG)
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#define USB_MCFG_PFEN (1<<31)
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#define USB_MCFG_RDCOMB (1<<30)
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#define USB_MCFG_SSDEN (1<<23)
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#define USB_MCFG_OHCCLKEN (1<<16)
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#define USB_MCFG_UCAM (1<<7)
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#define USB_MCFG_OBMEN (1<<1)
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#define USB_MCFG_OMEMEN (1<<0)
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#define USBH_ENABLE_CE USB_MCFG_OHCCLKEN
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#ifdef CONFIG_DMA_COHERENT
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#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \
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| USB_MCFG_PFEN | USB_MCFG_RDCOMB \
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| USB_MCFG_SSDEN | USB_MCFG_UCAM \
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| USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
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#else
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#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \
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| USB_MCFG_PFEN | USB_MCFG_RDCOMB \
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| USB_MCFG_SSDEN \
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| USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
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#endif
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#define USBH_DISABLE (USB_MCFG_OBMEN | USB_MCFG_OMEMEN)
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#endif /* Au1200 */
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extern int usb_disabled(void);
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/*-------------------------------------------------------------------------*/
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static void au1xxx_start_hc(struct platform_device *dev)
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static void au1xxx_start_ohc(struct platform_device *dev)
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{
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printk(KERN_DEBUG __FILE__
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": starting Au1xxx OHCI USB Controller\n");
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/* enable host controller */
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#ifndef CONFIG_SOC_AU1200
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au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG);
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udelay(1000);
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au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG);
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udelay(1000);
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#else /* Au1200 */
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/* write HW defaults again in case Yamon cleared them */
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if (au_readl(USB_HOST_CONFIG) == 0) {
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au_writel(0x00d02000, USB_HOST_CONFIG);
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au_readl(USB_HOST_CONFIG);
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udelay(1000);
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}
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au_writel(USBH_ENABLE_CE | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
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au_readl(USB_HOST_CONFIG);
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udelay(1000);
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au_writel(USBH_ENABLE_INIT | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
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au_readl(USB_HOST_CONFIG);
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udelay(1000);
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#endif /* Au1200 */
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/* wait for reset complete (read register twice; see au1500 errata) */
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while (au_readl(USB_HOST_CONFIG),
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!(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
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@ -61,13 +110,25 @@ static void au1xxx_start_hc(struct platform_device *dev)
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": Clock to USB host has been enabled \n");
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}
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static void au1xxx_stop_hc(struct platform_device *dev)
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static void au1xxx_stop_ohc(struct platform_device *dev)
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{
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printk(KERN_DEBUG __FILE__
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": stopping Au1xxx OHCI USB Controller\n");
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#ifndef CONFIG_SOC_AU1200
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/* Disable clock */
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au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
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#else /* Au1200 */
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/* Disable mem */
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au_writel(~USBH_DISABLE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
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udelay(1000);
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/* Disable clock */
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au_writel(~USBH_ENABLE_CE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG);
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au_readl(USB_HOST_CONFIG);
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#endif /* Au1200 */
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}
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@ -78,7 +139,7 @@ static void au1xxx_stop_hc(struct platform_device *dev)
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/**
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* usb_hcd_au1xxx_probe - initialize Au1xxx-based HCDs
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* usb_ohci_au1xxx_probe - initialize Au1xxx-based HCDs
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* Context: !in_interrupt()
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*
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* Allocates basic resources for this USB host controller, and
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@ -86,14 +147,25 @@ static void au1xxx_stop_hc(struct platform_device *dev)
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* through the hotplug entry's driver_data.
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*
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*/
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int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
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static int usb_ohci_au1xxx_probe(const struct hc_driver *driver,
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struct platform_device *dev)
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{
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int retval;
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struct usb_hcd *hcd;
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if(dev->resource[1].flags != IORESOURCE_IRQ) {
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pr_debug ("resource[1] is not IORESOURCE_IRQ");
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#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT)
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/* Au1200 AB USB does not support coherent memory */
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if (!(read_c0_prid() & 0xff)) {
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pr_info("%s: this is chip revision AB !!\n",
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dev->dev.name);
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pr_info("%s: update your board or re-configure the kernel\n",
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dev->dev.name);
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return -ENODEV;
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}
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#endif
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if (dev->resource[1].flags != IORESOURCE_IRQ) {
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pr_debug("resource[1] is not IORESOURCE_IRQ\n");
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return -ENOMEM;
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}
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@ -104,26 +176,26 @@ int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
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hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
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if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
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pr_debug("request_mem_region failed");
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pr_debug("request_mem_region failed\n");
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retval = -EBUSY;
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goto err1;
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}
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hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
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if (!hcd->regs) {
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pr_debug("ioremap failed");
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pr_debug("ioremap failed\n");
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retval = -ENOMEM;
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goto err2;
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}
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au1xxx_start_hc(dev);
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au1xxx_start_ohc(dev);
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ohci_hcd_init(hcd_to_ohci(hcd));
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retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
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retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT | SA_SHIRQ);
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if (retval == 0)
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return retval;
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au1xxx_stop_hc(dev);
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au1xxx_stop_ohc(dev);
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iounmap(hcd->regs);
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err2:
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release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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@ -146,10 +218,10 @@ int usb_hcd_au1xxx_probe (const struct hc_driver *driver,
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* context, normally "rmmod", "apmd", or something similar.
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*
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*/
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void usb_hcd_au1xxx_remove (struct usb_hcd *hcd, struct platform_device *dev)
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static void usb_ohci_au1xxx_remove(struct usb_hcd *hcd, struct platform_device *dev)
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{
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usb_remove_hcd(hcd);
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au1xxx_stop_hc(dev);
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au1xxx_stop_ohc(dev);
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iounmap(hcd->regs);
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release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
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usb_put_hcd(hcd);
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@ -235,7 +307,7 @@ static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
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if (usb_disabled())
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return -ENODEV;
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ret = usb_hcd_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev);
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ret = usb_ohci_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev);
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return ret;
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}
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@ -243,7 +315,7 @@ static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev)
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{
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struct usb_hcd *hcd = platform_get_drvdata(pdev);
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usb_hcd_au1xxx_remove(hcd, pdev);
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usb_ohci_au1xxx_remove(hcd, pdev);
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return 0;
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}
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/*TBD*/
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