On Fri, Mar 03, 2006 at 02:28:28AM +0100, Lennert Buytenhek wrote:
> > > + .start = ohci_ep93xx_start,
> > > + .stop = ohci_stop,
> > > + .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,
> > > +};
> >
> > Needs bus_suspend and bus_resume entries. Also start_port_reset.
> > I think you started from an old pxa version that didn't have those.
>
> Yeah, since my patch was against 2.6.15 (and was directly stolen from
> pxa as it mentions at the beginning of the file :-), I just used the
> pxa version that was in 2.6.15. I'm rebasing to 2.6.16-rc5 now and
> will get this updated, apologies. Will send new patch soon.
OK, it took a while, but here's a new patch for ep93xx ohci support,
against 2.6.17-git5, with all previous feedback incorporated. It
depends on the ep93xx implementation of the clk_* API, which is not
upstream yet and still sitting in rmk's patch tracker (3634/1), but
rmk said it looked okay so I assume it'll be merged soon.
Comments?
Thanks much!
cheers,
Lennert
--- CUT HERE ---
This patch adds OHCI glue bits for the USB host interface in the
Cirrus ep93xx (arm920t) CPU.
Signed-off-by: Lennert Buytenhek <[EMAIL PROTECTED]>
Index: linux-2.6.17-git5/drivers/usb/Kconfig
===================================================================
--- linux-2.6.17-git5.orig/drivers/usb/Kconfig
+++ linux-2.6.17-git5/drivers/usb/Kconfig
@@ -23,6 +23,7 @@ config USB_ARCH_HAS_OHCI
default y if ARCH_LH7A404
default y if ARCH_S3C2410
default y if PXA27x
+ default y if ARCH_EP93XX
default y if ARCH_AT91RM9200
# PPC:
default y if STB03xxx
Index: linux-2.6.17-git5/drivers/usb/host/ohci-ep93xx.c
===================================================================
--- /dev/null
+++ linux-2.6.17-git5/drivers/usb/host/ohci-ep93xx.c
@@ -0,0 +1,225 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <[EMAIL PROTECTED]>
+ * (C) Copyright 2000-2002 David Brownell <[EMAIL PROTECTED]>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Bus Glue for ep93xx.
+ *
+ * Written by Christopher Hoover <[EMAIL PROTECTED]>
+ * Based on fragments of previous driver by Russell King et al.
+ *
+ * Modified for LH7A404 from ohci-sa1111.c
+ * by Durgesh Pattamatta <[EMAIL PROTECTED]>
+ *
+ * Modified for pxa27x from ohci-lh7a404.c
+ * by Nick Bane <[EMAIL PROTECTED]> 26-8-2004
+ *
+ * Modified for ep93xx from ohci-pxa27x.c
+ * by Lennert Buytenhek <[EMAIL PROTECTED]> 28-2-2006
+ * Based on an earlier driver by Ray Lehtiniemi
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/signal.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+
+static struct clk *usb_host_clock;
+
+static void ep93xx_start_hc(struct device *dev)
+{
+ clk_enable(usb_host_clock);
+}
+
+static void ep93xx_stop_hc(struct device *dev)
+{
+ clk_disable(usb_host_clock);
+}
+
+static int usb_hcd_ep93xx_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, "ep93xx");
+ 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);
+ if (hcd->regs == NULL) {
+ pr_debug("ioremap failed");
+ retval = -ENOMEM;
+ goto err2;
+ }
+
+ usb_host_clock = clk_get(&pdev->dev, "usb_host");
+ ep93xx_start_hc(&pdev->dev);
+
+ ohci_hcd_init(hcd_to_ohci(hcd));
+
+ retval = usb_add_hcd(hcd, pdev->resource[1].start, SA_INTERRUPT);
+ if (retval == 0)
+ return retval;
+
+ ep93xx_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_ep93xx_remove(struct usb_hcd *hcd,
+ struct platform_device *pdev)
+{
+ usb_remove_hcd(hcd);
+ ep93xx_stop_hc(&pdev->dev);
+ clk_put(usb_host_clock);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+}
+
+static int __devinit ohci_ep93xx_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ if ((ret = ohci_init(ohci)) < 0)
+ return ret;
+
+ 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_ep93xx_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "EP93xx OHCI",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+ .start = ohci_ep93xx_start,
+ .stop = ohci_stop,
+ .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,
+#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_ep93xx_drv_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = -ENODEV;
+ if (!usb_disabled())
+ ret = usb_hcd_ep93xx_probe(&ohci_ep93xx_hc_driver, pdev);
+
+ return ret;
+}
+
+static int ohci_hcd_ep93xx_drv_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_hcd_ep93xx_remove(hcd, pdev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ohci_hcd_ep93xx_drv_suspend(struct platform_device *pdev,
pm_message_t state)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct ochi_hcd *ohci = hcd_to_ohci(hcd);
+
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+
+ ep93xx_stop_hc(&pdev->dev);
+ hcd->state = HC_STATE_SUSPENDED;
+ pdev->dev.power.power_state = PMSG_SUSPEND;
+
+ return 0;
+}
+
+static int ohci_hcd_ep93xx_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;
+
+ ep93xx_start_hc(&pdev->dev);
+ pdev->dev.power.power_state = PMSG_ON;
+ usb_hcd_resume_root_hub(hcd);
+
+ return 0;
+}
+#endif
+
+
+static struct platform_driver ohci_hcd_ep93xx_driver = {
+ .probe = ohci_hcd_ep93xx_drv_probe,
+ .remove = ohci_hcd_ep93xx_drv_remove,
+#ifdef CONFIG_PM
+ .suspend = ohci_hcd_ep93xx_drv_suspend,
+ .resume = ohci_hcd_ep93xx_drv_resume,
+#endif
+ .driver = {
+ .name = "ep93xx-ohci",
+ },
+};
+
+static int __init ohci_hcd_ep93xx_init(void)
+{
+ return platform_driver_register(&ohci_hcd_ep93xx_driver);
+}
+
+static void __exit ohci_hcd_ep93xx_cleanup(void)
+{
+ platform_driver_unregister(&ohci_hcd_ep93xx_driver);
+}
+
+module_init(ohci_hcd_ep93xx_init);
+module_exit(ohci_hcd_ep93xx_cleanup);
Index: linux-2.6.17-git5/drivers/usb/host/ohci-hcd.c
===================================================================
--- linux-2.6.17-git5.orig/drivers/usb/host/ohci-hcd.c
+++ linux-2.6.17-git5/drivers/usb/host/ohci-hcd.c
@@ -902,6 +902,10 @@ MODULE_LICENSE ("GPL");
#include "ohci-pxa27x.c"
#endif
+#ifdef CONFIG_ARCH_EP93XX
+#include "ohci-ep93xx.c"
+#endif
+
#ifdef CONFIG_SOC_AU1X00
#include "ohci-au1xxx.c"
#endif
@@ -920,6 +924,7 @@ MODULE_LICENSE ("GPL");
|| defined(CONFIG_ARCH_OMAP) \
|| defined (CONFIG_ARCH_LH7A404) \
|| defined (CONFIG_PXA27x) \
+ || defined (CONFIG_ARCH_EP93XX) \
|| defined (CONFIG_SOC_AU1X00) \
|| defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \
|| defined (CONFIG_ARCH_AT91RM9200) \
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