Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 383 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
new file mode 100644
index 00000000000..6f3464a9577
--- /dev/null
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -0,0 +1,383 @@
+/*
+ * 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 pxa27x
+ *
+ * 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
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/device.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/arch/pxa-regs.h>
+
+
+#define PMM_NPS_MODE           1
+#define PMM_GLOBAL_MODE        2
+#define PMM_PERPORT_MODE       3
+
+#define PXA_UHC_MAX_PORTNUM    3
+
+#define UHCRHPS(x)              __REG2( 0x4C000050, (x)<<2 )
+
+static int pxa27x_ohci_pmm_state;
+
+/*
+  PMM_NPS_MODE -- PMM Non-power switching mode
+      Ports are powered continuously.
+
+  PMM_GLOBAL_MODE -- PMM global switching mode
+      All ports are powered at the same time.
+
+  PMM_PERPORT_MODE -- PMM per port switching mode
+      Ports are powered individually.
+ */
+static int pxa27x_ohci_select_pmm( int mode )
+{
+	pxa27x_ohci_pmm_state = mode;
+
+	switch ( mode ) {
+	case PMM_NPS_MODE:
+		UHCRHDA |= RH_A_NPS;
+		break; 
+	case PMM_GLOBAL_MODE:
+		UHCRHDA &= ~(RH_A_NPS & RH_A_PSM);
+		break;
+	case PMM_PERPORT_MODE:
+		UHCRHDA &= ~(RH_A_NPS);
+		UHCRHDA |= RH_A_PSM;
+
+		/* Set port power control mask bits, only 3 ports. */
+		UHCRHDB |= (0x7<<17);
+		break;
+	default:
+		printk( KERN_ERR
+			"Invalid mode %d, set to non-power switch mode.\n", 
+			mode );
+
+		pxa27x_ohci_pmm_state = PMM_NPS_MODE;
+		UHCRHDA |= RH_A_NPS;
+	}
+
+	return 0;
+}
+
+/*
+  If you select PMM_PERPORT_MODE, you should set the port power
+ */
+static int pxa27x_ohci_set_port_power( int port )
+{
+	if ( (pxa27x_ohci_pmm_state==PMM_PERPORT_MODE)
+	     && (port>0) && (port<PXA_UHC_MAX_PORTNUM) ) {
+		UHCRHPS(port) |= 0x100;
+		return 0;
+	}
+	return -1;
+}
+
+/*
+  If you select PMM_PERPORT_MODE, you should set the port power
+ */
+static int pxa27x_ohci_clear_port_power( int port )
+{
+	if ( (pxa27x_ohci_pmm_state==PMM_PERPORT_MODE) 
+	     && (port>0) && (port<PXA_UHC_MAX_PORTNUM) ) {
+		UHCRHPS(port) |= 0x200;
+		return 0;
+	}
+	 
+	return -1;
+}
+
+extern int usb_disabled(void);
+
+/*-------------------------------------------------------------------------*/
+
+static void pxa27x_start_hc(struct platform_device *dev)
+{
+	pxa_set_cken(CKEN10_USBHOST, 1);
+
+	UHCHR |= UHCHR_FHR;
+	udelay(11);
+	UHCHR &= ~UHCHR_FHR;
+
+	UHCHR |= UHCHR_FSBIR;
+	while (UHCHR & UHCHR_FSBIR)
+		cpu_relax();
+
+	/* This could be properly abstracted away through the
+	   device data the day more machines are supported and
+	   their differences can be figured out correctly. */
+	if (machine_is_mainstone()) {
+		/* setup Port1 GPIO pin. */
+		pxa_gpio_mode( 88 | GPIO_ALT_FN_1_IN);	/* USBHPWR1 */
+		pxa_gpio_mode( 89 | GPIO_ALT_FN_2_OUT);	/* USBHPEN1 */
+
+		/* Set the Power Control Polarity Low and Power Sense
+		   Polarity Low to active low. Supply power to USB ports. */
+		UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
+			~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
+	}
+
+	UHCHR &= ~UHCHR_SSE;
+
+	UHCHIE = (UHCHIE_UPRIE | UHCHIE_RWIE);
+}
+
+static void pxa27x_stop_hc(struct platform_device *dev)
+{
+	UHCHR |= UHCHR_FHR;
+	udelay(11);
+	UHCHR &= ~UHCHR_FHR;
+
+	UHCCOMS |= 1;
+	udelay(10);
+
+	pxa_set_cken(CKEN10_USBHOST, 0);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+
+/**
+ * usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ *
+ */
+int usb_hcd_pxa27x_probe (const struct hc_driver *driver,
+			  struct platform_device *dev)
+{
+	int retval;
+	struct usb_hcd *hcd;
+
+	if (dev->resource[1].flags != IORESOURCE_IRQ) {
+		pr_debug ("resource[1] is not IORESOURCE_IRQ");
+		return -ENOMEM;
+	}
+
+	hcd = usb_create_hcd (driver, &dev->dev, "pxa27x");
+	if (!hcd)
+		return -ENOMEM;
+	hcd->rsrc_start = dev->resource[0].start;
+	hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1;
+
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+		pr_debug("request_mem_region failed");
+		retval = -EBUSY;
+		goto err1;
+	}
+
+	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	if (!hcd->regs) {
+		pr_debug("ioremap failed");
+		retval = -ENOMEM;
+		goto err2;
+	}
+
+	pxa27x_start_hc(dev);
+
+	/* Select Power Management Mode */
+	pxa27x_ohci_select_pmm( PMM_PERPORT_MODE );
+
+	/* If choosing PMM_PERPORT_MODE, we should set the port power before we use it. */
+	if (pxa27x_ohci_set_port_power(1) < 0)
+		printk(KERN_ERR "Setting port 1 power failed.\n");
+
+	if (pxa27x_ohci_clear_port_power(2) < 0)
+		printk(KERN_ERR "Setting port 2 power failed.\n");
+
+	if (pxa27x_ohci_clear_port_power(3) < 0)
+		printk(KERN_ERR "Setting port 3 power failed.\n");
+
+	ohci_hcd_init(hcd_to_ohci(hcd));
+
+	retval = usb_add_hcd(hcd, dev->resource[1].start, SA_INTERRUPT);
+	if (retval == 0)
+		return retval;
+
+	pxa27x_stop_hc(dev);
+	iounmap(hcd->regs);
+ err2:
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ err1:
+	usb_put_hcd(hcd);
+	return retval;
+}
+
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ *
+ */
+void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *dev)
+{
+	usb_remove_hcd(hcd);
+	pxa27x_stop_hc(dev);
+	iounmap(hcd->regs);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	usb_put_hcd(hcd);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int __devinit
+ohci_pxa27x_start (struct usb_hcd *hcd)
+{
+	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
+	int		ret;
+
+	ohci_dbg (ohci, "ohci_pxa27x_start, ohci:%p", ohci);
+
+	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 const struct hc_driver ohci_pxa27x_hc_driver = {
+	.description =		hcd_name,
+	.product_desc =		"PXA27x OHCI",
+	.hcd_priv_size =	sizeof(struct ohci_hcd),
+
+	/*
+	 * generic hardware linkage
+	 */
+	.irq =			ohci_irq,
+	.flags =		HCD_USB11 | HCD_MEMORY,
+
+	/*
+	 * basic lifecycle operations
+	 */
+	.start =		ohci_pxa27x_start,
+	.stop =			ohci_stop,
+
+	/*
+	 * managing i/o requests and associated device resources
+	 */
+	.urb_enqueue =		ohci_urb_enqueue,
+	.urb_dequeue =		ohci_urb_dequeue,
+	.endpoint_disable =	ohci_endpoint_disable,
+
+	/*
+	 * scheduling support
+	 */
+	.get_frame_number =	ohci_get_frame,
+
+	/*
+	 * root hub support
+	 */
+	.hub_status_data =	ohci_hub_status_data,
+	.hub_control =		ohci_hub_control,
+#ifdef  CONFIG_USB_SUSPEND
+	.hub_suspend =		ohci_hub_suspend,
+	.hub_resume =		ohci_hub_resume,
+#endif
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_pxa27x_drv_probe(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	int ret;
+
+	pr_debug ("In ohci_hcd_pxa27x_drv_probe");
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	ret = usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
+	return ret;
+}
+
+static int ohci_hcd_pxa27x_drv_remove(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+	usb_hcd_pxa27x_remove(hcd, pdev);
+	return 0;
+}
+
+static int ohci_hcd_pxa27x_drv_suspend(struct device *dev, u32 state, u32 level)
+{
+//	struct platform_device *pdev = to_platform_device(dev);
+//	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	printk("%s: not implemented yet\n", __FUNCTION__);
+
+	return 0;
+}
+
+static int ohci_hcd_pxa27x_drv_resume(struct device *dev, u32 state)
+{
+//	struct platform_device *pdev = to_platform_device(dev);
+//	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	printk("%s: not implemented yet\n", __FUNCTION__);
+
+	return 0;
+}
+
+
+static struct device_driver ohci_hcd_pxa27x_driver = {
+	.name		= "pxa27x-ohci",
+	.bus		= &platform_bus_type,
+	.probe		= ohci_hcd_pxa27x_drv_probe,
+	.remove		= ohci_hcd_pxa27x_drv_remove,
+	.suspend	= ohci_hcd_pxa27x_drv_suspend, 
+	.resume		= ohci_hcd_pxa27x_drv_resume, 
+};
+
+static int __init ohci_hcd_pxa27x_init (void)
+{
+	pr_debug (DRIVER_INFO " (pxa27x)");
+	pr_debug ("block sizes: ed %d td %d\n",
+		sizeof (struct ed), sizeof (struct td));
+
+	return driver_register(&ohci_hcd_pxa27x_driver);
+}
+
+static void __exit ohci_hcd_pxa27x_cleanup (void)
+{
+	driver_unregister(&ohci_hcd_pxa27x_driver);
+}
+
+module_init (ohci_hcd_pxa27x_init);
+module_exit (ohci_hcd_pxa27x_cleanup);