linux-rp: add omitted pxa2xx_udc-clock.patch from previous commit

* complements 8b21a69e52feb768f1d096aa78e44dd20ce3aed4
* damn, mtn makes it too easy to forget to add files to a commit

1 files changed, 221 insertions, 0 deletions

diff --git a/packages/linux/linux-rp-2.6.24/pxa2xx_udc-clock.patch b/packages/linux/linux-rp-2.6.24/pxa2xx_udc-clock.patch
new file mode 100644
index 0000000000..14c496a31a
--- /dev/null
+++ b/packages/linux/linux-rp-2.6.24/pxa2xx_udc-clock.patch
@@ -0,0 +1,221 @@
+---
+ drivers/usb/gadget/pxa2xx_udc.c |   88 ++++++++++++++++++++++------------------
+ drivers/usb/gadget/pxa2xx_udc.h |    4 +
+ 2 files changed, 53 insertions(+), 39 deletions(-)
+
+--- g26.orig/drivers/usb/gadget/pxa2xx_udc.c	2008-02-19 12:47:06.000000000 -0800
++++ g26/drivers/usb/gadget/pxa2xx_udc.c	2008-02-19 14:07:17.000000000 -0800
+@@ -103,6 +103,12 @@ static const char ep0name [] = "ep0";
+ #error "Can't configure both IXP and PXA"
+ #endif
+ 
++/* IXP doesn't yet support <linux/clk.h> */
++#define clk_get(dev,name)	NULL
++#define clk_enable(clk)		do { } while (0)
++#define clk_disable(clk)	do { } while (0)
++#define clk_put(clk)		do { } while (0)
++
+ #endif
+ 
+ #include "pxa2xx_udc.h"
+@@ -934,20 +940,31 @@ static void udc_disable(struct pxa2xx_ud
+ /* We disable the UDC -- and its 48 MHz clock -- whenever it's not
+  * in active use.
+  */
+-static int pullup(struct pxa2xx_udc *udc, int is_active)
++static int pullup(struct pxa2xx_udc *udc)
+ {
+-	is_active = is_active && udc->vbus && udc->pullup;
++	int is_active = udc->vbus && udc->pullup && !udc->suspended;
+ 	DMSG("%s\n", is_active ? "active" : "inactive");
+-	if (is_active)
+-		udc_enable(udc);
+-	else {
+-		if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
+-			DMSG("disconnect %s\n", udc->driver
+-				? udc->driver->driver.name
+-				: "(no driver)");
+-			stop_activity(udc, udc->driver);
++	if (is_active) {
++		if (!udc->active) {
++			udc->active = 1;
++			/* Enable clock for USB device */
++			clk_enable(udc->clk);
++			udc_enable(udc);
+ 		}
+-		udc_disable(udc);
++	} else {
++		if (udc->active) {
++			if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
++				DMSG("disconnect %s\n", udc->driver
++					? udc->driver->driver.name
++					: "(no driver)");
++				stop_activity(udc, udc->driver);
++			}
++			udc_disable(udc);
++			/* Disable clock for USB device */
++			clk_disable(udc->clk);
++			udc->active = 0;
++		}
++
+ 	}
+ 	return 0;
+ }
+@@ -958,9 +975,9 @@ static int pxa2xx_udc_vbus_session(struc
+ 	struct pxa2xx_udc	*udc;
+ 
+ 	udc = container_of(_gadget, struct pxa2xx_udc, gadget);
+-	udc->vbus = is_active = (is_active != 0);
++	udc->vbus = (is_active != 0);
+ 	DMSG("vbus %s\n", is_active ? "supplied" : "inactive");
+-	pullup(udc, is_active);
++	pullup(udc);
+ 	return 0;
+ }
+ 
+@@ -975,9 +992,8 @@ static int pxa2xx_udc_pullup(struct usb_
+ 	if (!udc->mach->gpio_pullup && !udc->mach->udc_command)
+ 		return -EOPNOTSUPP;
+ 
+-	is_active = (is_active != 0);
+-	udc->pullup = is_active;
+-	pullup(udc, is_active);
++	udc->pullup = (is_active != 0);
++	pullup(udc);
+ 	return 0;
+ }
+ 
+@@ -1146,11 +1162,6 @@ static void udc_disable(struct pxa2xx_ud
+ 
+ 	udc_clear_mask_UDCCR(UDCCR_UDE);
+ 
+-#ifdef	CONFIG_ARCH_PXA
+-        /* Disable clock for USB device */
+-	clk_disable(dev->clk);
+-#endif
+-
+ 	ep0_idle (dev);
+ 	dev->gadget.speed = USB_SPEED_UNKNOWN;
+ }
+@@ -1191,11 +1202,6 @@ static void udc_enable (struct pxa2xx_ud
+ {
+ 	udc_clear_mask_UDCCR(UDCCR_UDE);
+ 
+-#ifdef	CONFIG_ARCH_PXA
+-        /* Enable clock for USB device */
+-	clk_enable(dev->clk);
+-#endif
+-
+ 	/* try to clear these bits before we enable the udc */
+ 	udc_ack_int_UDCCR(UDCCR_SUSIR|/*UDCCR_RSTIR|*/UDCCR_RESIR);
+ 
+@@ -1286,7 +1292,7 @@ fail:
+ 	 * for set_configuration as well as eventual disconnect.
+ 	 */
+ 	DMSG("registered gadget driver '%s'\n", driver->driver.name);
+-	pullup(dev, 1);
++	pullup(dev);
+ 	dump_state(dev);
+ 	return 0;
+ }
+@@ -1329,7 +1335,8 @@ int usb_gadget_unregister_driver(struct 
+ 		return -EINVAL;
+ 
+ 	local_irq_disable();
+-	pullup(dev, 0);
++	dev->pullup = 0;
++	pullup(dev);
+ 	stop_activity(dev, driver);
+ 	local_irq_enable();
+ 
+@@ -2131,13 +2138,11 @@ static int __init pxa2xx_udc_probe(struc
+ 	if (irq < 0)
+ 		return -ENODEV;
+ 
+-#ifdef	CONFIG_ARCH_PXA
+ 	dev->clk = clk_get(&pdev->dev, "UDCCLK");
+ 	if (IS_ERR(dev->clk)) {
+ 		retval = PTR_ERR(dev->clk);
+ 		goto err_clk;
+ 	}
+-#endif
+ 
+ 	pr_debug("%s: IRQ %d%s%s\n", driver_name, irq,
+ 		dev->has_cfr ? "" : " (!cfr)",
+@@ -2250,10 +2255,8 @@ lubbock_fail0:
+ 	if (dev->mach->gpio_vbus)
+ 		gpio_free(dev->mach->gpio_vbus);
+  err_gpio_vbus:
+-#ifdef	CONFIG_ARCH_PXA
+ 	clk_put(dev->clk);
+  err_clk:
+-#endif
+ 	return retval;
+ }
+ 
+@@ -2269,7 +2272,9 @@ static int __exit pxa2xx_udc_remove(stru
+ 	if (dev->driver)
+ 		return -EBUSY;
+ 
+-	udc_disable(dev);
++	dev->pullup = 0;
++	pullup(dev);
++
+ 	remove_proc_files();
+ 
+ 	if (dev->got_irq) {
+@@ -2289,9 +2294,7 @@ static int __exit pxa2xx_udc_remove(stru
+ 	if (dev->mach->gpio_pullup)
+ 		gpio_free(dev->mach->gpio_pullup);
+ 
+-#ifdef	CONFIG_ARCH_PXA
+ 	clk_put(dev->clk);
+-#endif
+ 
+ 	platform_set_drvdata(pdev, NULL);
+ 	the_controller = NULL;
+@@ -2317,10 +2320,15 @@ static int __exit pxa2xx_udc_remove(stru
+ static int pxa2xx_udc_suspend(struct platform_device *dev, pm_message_t state)
+ {
+ 	struct pxa2xx_udc	*udc = platform_get_drvdata(dev);
++	unsigned long flags;
+ 
+ 	if (!udc->mach->gpio_pullup && !udc->mach->udc_command)
+ 		WARN("USB host won't detect disconnect!\n");
+-	pullup(udc, 0);
++	udc->suspended = 1;
++
++	local_irq_save(flags);
++	pullup(udc);
++	local_irq_restore(flags);
+ 
+ 	return 0;
+ }
+@@ -2328,8 +2336,12 @@ static int pxa2xx_udc_suspend(struct pla
+ static int pxa2xx_udc_resume(struct platform_device *dev)
+ {
+ 	struct pxa2xx_udc	*udc = platform_get_drvdata(dev);
++	unsigned long flags;
+ 
+-	pullup(udc, 1);
++	udc->suspended = 0;
++	local_irq_save(flags);
++	pullup(udc);
++	local_irq_restore(flags);
+ 
+ 	return 0;
+ }
+--- g26.orig/drivers/usb/gadget/pxa2xx_udc.h	2008-02-19 12:47:06.000000000 -0800
++++ g26/drivers/usb/gadget/pxa2xx_udc.h	2008-02-19 12:57:42.000000000 -0800
+@@ -119,7 +119,9 @@ struct pxa2xx_udc {
+ 						has_cfr : 1,
+ 						req_pending : 1,
+ 						req_std : 1,
+-						req_config : 1;
++						req_config : 1,
++						suspended : 1,
++						active : 1;
+ 
+ #define start_watchdog(dev) mod_timer(&dev->timer, jiffies + (HZ/200))
+ 	struct timer_list			timer;
+-