Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (47 commits)
  usb: musb: pass configuration specifics via pdata
  usb: musb: fix hanging when rmmod gadget driver
  USB: Add MUSB and TUSB support
  USB: serial: remove CONFIG_USB_DEBUG from sierra and option drivers
  USB: Add vendor/product id of ZTE MF628 to option
  USB: quirk PLL power down mode
  USB: omap_udc: fix compilation with debug enabled
  usb: cdc-acm: drain writes on close
  usb: cdc-acm: stop dropping tx buffers
  usb: cdc-acm: bugfix release()
  usb gadget: issue notifications from ACM function
  usb gadget: remove needless struct members
  USB: sh: r8a66597-hcd: fix disconnect regression
  USB: isp1301: fix compilation
  USB: fix compiler warning fix
  usb-storage: unusual_devs entry for Nokia 5300
  USB: cdc-acm.c: Fix compile warnings
  USB: BandRich BandLuxe C150/C250 HSPA Data Card Driver
  USB: ftdi_sio: add support for PHI Fisco data cable (FT232BM based, VID/PID 0403:e40b)
  usb: isp1760: don't be noisy about short packets.
  ...

Documentation/devices.txt

@@ -2560,9 +2560,6 @@ Your cooperation is appreciated.
 		 96 = /dev/usb/hiddev0	1st USB HID device
 		    ...
 		111 = /dev/usb/hiddev15	16th USB HID device
-		112 = /dev/usb/auer0	1st auerswald ISDN device
-		    ...
-		127 = /dev/usb/auer15	16th auerswald ISDN device
 		128 = /dev/usb/brlvgr0	First Braille Voyager device
 		    ...
 		131 = /dev/usb/brlvgr3	Fourth Braille Voyager device

Documentation/ioctl-number.txt

@@ -105,7 +105,6 @@ Code	Seq#	Include File		Comments
 'T'	all	linux/soundcard.h	conflict!
 'T'	all	asm-i386/ioctls.h	conflict!
 'U'	00-EF	linux/drivers/usb/usb.h
-'U'	F0-FF	drivers/usb/auerswald.c
 'V'	all	linux/vt.h
 'W'	00-1F	linux/watchdog.h	conflict!
 'W'	00-1F	linux/wanrouter.h	conflict!

Documentation/usb/auerswald.txt

-		Auerswald USB kernel driver
-		===========================
-
-What is it? What can I do with it?
-==================================
-The auerswald USB kernel driver connects your linux 2.4.x
-system to the auerswald usb-enabled devices.
-
-There are two types of auerswald usb devices:
-a) small PBX systems (ISDN)
-b) COMfort system telephones (ISDN)
-
-The driver installation creates the devices
-/dev/usb/auer0..15. These devices carry a vendor-
-specific protocol. You may run all auerswald java
-software on it. The java software needs a native
-library "libAuerUsbJNINative.so" installed on
-your system. This library is available from
-auerswald and shipped as part of the java software.
-
-You may create the devices with:
-	mknod -m 666 /dev/usb/auer0 c 180 112
-	...
-	mknod -m 666 /dev/usb/auer15 c 180 127
-
-Future plans
-============
-- Connection to ISDN4LINUX (the hisax interface)
-
-The maintainer of this driver is wolfgang@iksw-muees.de

Documentation/usb/power-management.txt

@@ -436,7 +436,12 @@ post_reset; the USB core guarantees that this is true of internal
 suspend/resume events as well.
 
 If a driver wants to block all suspend/resume calls during some
-critical section, it can simply acquire udev->pm_mutex.
+critical section, it can simply acquire udev->pm_mutex. Note that
+calls to resume may be triggered indirectly. Block IO due to memory
+allocations can make the vm subsystem resume a device. Thus while
+holding this lock you must not allocate memory with GFP_KERNEL or
+GFP_NOFS.
+
 Alternatively, if the critical section might call some of the
 usb_autopm_* routines, the driver can avoid deadlock by doing:
 

MAINTAINERS

@@ -2928,6 +2928,12 @@ M:	jirislaby@gmail.com
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 
+MUSB MULTIPOINT HIGH SPEED DUAL-ROLE CONTROLLER
+P:     Felipe Balbi
+M:     felipe.balbi@nokia.com
+L:     linux-usb@vger.kernel.org
+S:     Maintained
+
 MYRICOM MYRI-10G 10GbE DRIVER (MYRI10GE)
 P:	Andrew Gallatin
 M:	gallatin@myri.com
@@ -4196,12 +4202,6 @@ M:	oliver@neukum.name
 L:	linux-usb@vger.kernel.org
 S:	Maintained
 
-USB AUERSWALD DRIVER
-P:	Wolfgang Muees
-M:	wolfgang@iksw-muees.de
-L:      linux-usb@vger.kernel.org
-S:	Maintained
-
 USB BLOCK DRIVER (UB ub)
 P:	Pete Zaitcev
 M:	zaitcev@redhat.com

arch/arm/mach-omap2/usb-tusb6010.c

@@ -317,7 +317,6 @@ tusb6010_setup_interface(struct musb_hdrc_platform_data *data,
 		printk(error, 6, status);
 		return -ENODEV;
 	}
-	data->multipoint = 1;
 	tusb_device.dev.platform_data = data;
 
 	/* REVISIT let the driver know what DMA channels work */

drivers/Makefile

@@ -57,6 +57,7 @@ obj-$(CONFIG_ATA_OVER_ETH)	+= block/aoe/
 obj-$(CONFIG_PARIDE) 		+= block/paride/
 obj-$(CONFIG_TC)		+= tc/
 obj-$(CONFIG_USB)		+= usb/
+obj-$(CONFIG_USB_MUSB_HDRC)	+= usb/musb/
 obj-$(CONFIG_PCI)		+= usb/
 obj-$(CONFIG_USB_GADGET)	+= usb/gadget/
 obj-$(CONFIG_SERIO)		+= input/serio/

drivers/i2c/chips/isp1301_omap.c

@@ -1593,7 +1593,7 @@ static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
 	if (machine_is_omap_h2()) {
 		/* full speed signaling by default */
 		isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1,
-			MC1_SPEED_REG);
+			MC1_SPEED);
 		isp1301_set_bits(isp, ISP1301_MODE_CONTROL_2,
 			MC2_SPD_SUSP_CTRL);
 

drivers/usb/Kconfig

@@ -95,16 +95,18 @@ config USB
 
 source "drivers/usb/core/Kconfig"
 
+source "drivers/usb/mon/Kconfig"
+
 source "drivers/usb/host/Kconfig"
 
+source "drivers/usb/musb/Kconfig"
+
 source "drivers/usb/class/Kconfig"
 
 source "drivers/usb/storage/Kconfig"
 
 source "drivers/usb/image/Kconfig"
 
-source "drivers/usb/mon/Kconfig"
-
 comment "USB port drivers"
 	depends on USB
 

drivers/usb/atm/cxacru.c

@@ -602,7 +602,7 @@ static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_requ
 			offd = le32_to_cpu(buf[offb++]);
 			if (offd >= size) {
 				if (printk_ratelimit())
-					usb_err(instance->usbatm, "wrong index #%x in response to cm #%x\n",
+					usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n",
 						offd, cm);
 				ret = -EIO;
 				goto cleanup;

drivers/usb/class/cdc-acm.c

@@ -51,6 +51,7 @@
  */
 
 #undef DEBUG
+#undef VERBOSE_DEBUG
 
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -70,6 +71,9 @@
 
 #include "cdc-acm.h"
 
+
+#define ACM_CLOSE_TIMEOUT	15	/* seconds to let writes drain */
+
 /*
  * Version Information
  */
@@ -85,6 +89,12 @@ static DEFINE_MUTEX(open_mutex);
 
 #define ACM_READY(acm)	(acm && acm->dev && acm->used)
 
+#ifdef VERBOSE_DEBUG
+#define verbose	1
+#else
+#define verbose	0
+#endif
+
 /*
  * Functions for ACM control messages.
  */
@@ -136,19 +146,17 @@ static int acm_wb_alloc(struct acm *acm)
 static int acm_wb_is_avail(struct acm *acm)
 {
 	int i, n;
+	unsigned long flags;
 
 	n = ACM_NW;
+	spin_lock_irqsave(&acm->write_lock, flags);
 	for (i = 0; i < ACM_NW; i++) {
 		n -= acm->wb[i].use;
 	}
+	spin_unlock_irqrestore(&acm->write_lock, flags);
 	return n;
 }
 
-static inline int acm_wb_is_used(struct acm *acm, int wbn)
-{
-	return acm->wb[wbn].use;
-}
-
 /*
  * Finish write.
  */
@@ -157,7 +165,6 @@ static void acm_write_done(struct acm *acm, struct acm_wb *wb)
 	unsigned long flags;
 
 	spin_lock_irqsave(&acm->write_lock, flags);
-	acm->write_ready = 1;
 	wb->use = 0;
 	acm->transmitting--;
 	spin_unlock_irqrestore(&acm->write_lock, flags);
@@ -190,40 +197,25 @@ static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
 static int acm_write_start(struct acm *acm, int wbn)
 {
 	unsigned long flags;
-	struct acm_wb *wb;
+	struct acm_wb *wb = &acm->wb[wbn];
 	int rc;
 
 	spin_lock_irqsave(&acm->write_lock, flags);
 	if (!acm->dev) {
+		wb->use = 0;
 		spin_unlock_irqrestore(&acm->write_lock, flags);
 		return -ENODEV;
 	}
 
-	if (!acm->write_ready) {
-		spin_unlock_irqrestore(&acm->write_lock, flags);
-		return 0;	/* A white lie */
-	}
-
-	wb = &acm->wb[wbn];
-	if(acm_wb_is_avail(acm) <= 1)
-		acm->write_ready = 0;
-
 	dbg("%s susp_count: %d", __func__, acm->susp_count);
 	if (acm->susp_count) {
-		acm->old_ready = acm->write_ready;
 		acm->delayed_wb = wb;
-		acm->write_ready = 0;
 		schedule_work(&acm->waker);
 		spin_unlock_irqrestore(&acm->write_lock, flags);
 		return 0;	/* A white lie */
 	}
 	usb_mark_last_busy(acm->dev);
 
-	if (!acm_wb_is_used(acm, wbn)) {
-		spin_unlock_irqrestore(&acm->write_lock, flags);
-		return 0;
-	}
-
 	rc = acm_start_wb(acm, wb);
 	spin_unlock_irqrestore(&acm->write_lock, flags);
 
@@ -488,22 +480,28 @@ static void acm_rx_tasklet(unsigned long _acm)
 /* data interface wrote those outgoing bytes */
 static void acm_write_bulk(struct urb *urb)
 {
-	struct acm *acm;
 	struct acm_wb *wb = urb->context;
+	struct acm *acm = wb->instance;
 
-	dbg("Entering acm_write_bulk with status %d", urb->status);
+	if (verbose || urb->status
+			|| (urb->actual_length != urb->transfer_buffer_length))
+		dev_dbg(&acm->data->dev, "tx %d/%d bytes -- > %d\n",
+			urb->actual_length,
+			urb->transfer_buffer_length,
+			urb->status);
 
-	acm = wb->instance;
 	acm_write_done(acm, wb);
 	if (ACM_READY(acm))
 		schedule_work(&acm->work);
+	else
+		wake_up_interruptible(&acm->drain_wait);
 }
 
 static void acm_softint(struct work_struct *work)
 {
 	struct acm *acm = container_of(work, struct acm, work);
-	dbg("Entering acm_softint.");
-	
+
+	dev_vdbg(&acm->data->dev, "tx work\n");
 	if (!ACM_READY(acm))
 		return;
 	tty_wakeup(acm->tty);
@@ -512,7 +510,6 @@ static void acm_softint(struct work_struct *work)
 static void acm_waker(struct work_struct *waker)
 {
 	struct acm *acm = container_of(waker, struct acm, waker);
-	long flags;
 	int rv;
 
 	rv = usb_autopm_get_interface(acm->control);
@@ -524,9 +521,6 @@ static void acm_waker(struct work_struct *waker)
 		acm_start_wb(acm, acm->delayed_wb);
 		acm->delayed_wb = NULL;
 	}
-	spin_lock_irqsave(&acm->write_lock, flags);
-	acm->write_ready = acm->old_ready;
-	spin_unlock_irqrestore(&acm->write_lock, flags);
 	usb_autopm_put_interface(acm->control);
 }
 
@@ -628,6 +622,8 @@ static void acm_tty_unregister(struct acm *acm)
 	kfree(acm);
 }
 
+static int acm_tty_chars_in_buffer(struct tty_struct *tty);
+
 static void acm_tty_close(struct tty_struct *tty, struct file *filp)
 {
 	struct acm *acm = tty->driver_data;
@@ -642,6 +638,13 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp)
 		if (acm->dev) {
 			usb_autopm_get_interface(acm->control);
 			acm_set_control(acm, acm->ctrlout = 0);
+
+			/* try letting the last writes drain naturally */
+			wait_event_interruptible_timeout(acm->drain_wait,
+					(ACM_NW == acm_wb_is_avail(acm))
+						|| !acm->dev,
+					ACM_CLOSE_TIMEOUT * HZ);
+
 			usb_kill_urb(acm->ctrlurb);
 			for (i = 0; i < ACM_NW; i++)
 				usb_kill_urb(acm->wb[i].urb);
@@ -697,7 +700,7 @@ static int acm_tty_write_room(struct tty_struct *tty)
 	 * Do not let the line discipline to know that we have a reserve,
 	 * or it might get too enthusiastic.
 	 */
-	return (acm->write_ready && acm_wb_is_avail(acm)) ? acm->writesize : 0;
+	return acm_wb_is_avail(acm) ? acm->writesize : 0;
 }
 
 static int acm_tty_chars_in_buffer(struct tty_struct *tty)
@@ -1072,11 +1075,11 @@ static int acm_probe (struct usb_interface *intf,
 	acm->urb_task.data = (unsigned long) acm;
 	INIT_WORK(&acm->work, acm_softint);
 	INIT_WORK(&acm->waker, acm_waker);
+	init_waitqueue_head(&acm->drain_wait);
 	spin_lock_init(&acm->throttle_lock);
 	spin_lock_init(&acm->write_lock);
 	spin_lock_init(&acm->read_lock);
 	mutex_init(&acm->mutex);
-	acm->write_ready = 1;
 	acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
 
 	buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
@@ -1108,9 +1111,11 @@ static int acm_probe (struct usb_interface *intf,
 		rcv->instance = acm;
 	}
 	for (i = 0; i < num_rx_buf; i++) {
-		struct acm_rb *buf = &(acm->rb[i]);
+		struct acm_rb *rb = &(acm->rb[i]);
 
-		if (!(buf->base = usb_buffer_alloc(acm->dev, readsize, GFP_KERNEL, &buf->dma))) {
+		rb->base = usb_buffer_alloc(acm->dev, readsize,
+				GFP_KERNEL, &rb->dma);
+		if (!rb->base) {
 			dev_dbg(&intf->dev, "out of memory (read bufs usb_buffer_alloc)\n");
 			goto alloc_fail7;
 		}
@@ -1172,6 +1177,7 @@ static int acm_probe (struct usb_interface *intf,
 	acm_set_line(acm, &acm->line);
 
 	usb_driver_claim_interface(&acm_driver, data_interface, acm);
+	usb_set_intfdata(data_interface, acm);
 
 	usb_get_intf(control_interface);
 	tty_register_device(acm_tty_driver, minor, &control_interface->dev);
@@ -1221,11 +1227,11 @@ static void acm_disconnect(struct usb_interface *intf)
 	struct acm *acm = usb_get_intfdata(intf);
 	struct usb_device *usb_dev = interface_to_usbdev(intf);
 
-	mutex_lock(&open_mutex);
-	if (!acm || !acm->dev) {
-		mutex_unlock(&open_mutex);
+	/* sibling interface is already cleaning up */
+	if (!acm)
 		return;
-	}
+
+	mutex_lock(&open_mutex);
 	if (acm->country_codes){
 		device_remove_file(&acm->control->dev,
 				&dev_attr_wCountryCodes);

drivers/usb/class/cdc-acm.h

@@ -106,8 +106,6 @@ struct acm {
 	struct list_head spare_read_bufs;
 	struct list_head filled_read_bufs;
 	int write_used;					/* number of non-empty write buffers */
-	int write_ready;				/* write urb is not running */
-	int old_ready;
 	int processing;
 	int transmitting;
 	spinlock_t write_lock;
@@ -115,6 +113,7 @@ struct acm {
 	struct usb_cdc_line_coding line;		/* bits, stop, parity */
 	struct work_struct work;			/* work queue entry for line discipline waking up */
 	struct work_struct waker;
+	wait_queue_head_t drain_wait;			/* close processing */
 	struct tasklet_struct urb_task;                 /* rx processing */
 	spinlock_t throttle_lock;			/* synchronize throtteling and read callback */
 	unsigned int ctrlin;				/* input control lines (DCD, DSR, RI, break, overruns) */

drivers/usb/core/driver.c

@@ -774,7 +774,6 @@ void usb_deregister(struct usb_driver *driver)
 }
 EXPORT_SYMBOL_GPL(usb_deregister);
 
-
 /* Forced unbinding of a USB interface driver, either because
  * it doesn't support pre_reset/post_reset/reset_resume or
  * because it doesn't support suspend/resume.
@@ -821,6 +820,8 @@ void usb_rebind_intf(struct usb_interface *intf)
 		dev_warn(&intf->dev, "rebind failed: %d\n", rc);
 }
 
+#ifdef CONFIG_PM
+
 #define DO_UNBIND	0
 #define DO_REBIND	1
 
@@ -872,8 +873,6 @@ static void do_unbind_rebind(struct usb_device *udev, int action)
 	}
 }
 
-#ifdef CONFIG_PM
-
 /* Caller has locked udev's pm_mutex */
 static int usb_suspend_device(struct usb_device *udev, pm_message_t msg)
 {

drivers/usb/core/message.c

@@ -1091,8 +1091,8 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0)
 				continue;
 			dev_dbg(&dev->dev, "unregistering interface %s\n",
 				dev_name(&interface->dev));
-			device_del(&interface->dev);
 			usb_remove_sysfs_intf_files(interface);
+			device_del(&interface->dev);
 		}
 
 		/* Now that the interfaces are unbound, nobody should

drivers/usb/gadget/Kconfig

@@ -284,6 +284,16 @@ config USB_LH7A40X
 	default USB_GADGET
 	select USB_GADGET_SELECTED
 
+# built in ../musb along with host support
+config USB_GADGET_MUSB_HDRC
+	boolean "Inventra HDRC USB Peripheral (TI, ...)"
+	depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
+	select USB_GADGET_DUALSPEED
+	select USB_GADGET_SELECTED
+	help
+	  This OTG-capable silicon IP is used in dual designs including
+	  the TI DaVinci, OMAP 243x, OMAP 343x, and TUSB 6010.
+
 config USB_GADGET_OMAP
 	boolean "OMAP USB Device Controller"
 	depends on ARCH_OMAP

drivers/usb/gadget/dummy_hcd.c

@@ -542,13 +542,14 @@ dummy_queue (struct usb_ep *_ep, struct usb_request *_req,
 		req->req.context = dum;
 		req->req.complete = fifo_complete;
 
+		list_add_tail(&req->queue, &ep->queue);
 		spin_unlock (&dum->lock);
 		_req->actual = _req->length;
 		_req->status = 0;
 		_req->complete (_ep, _req);
 		spin_lock (&dum->lock);
-	}
-	list_add_tail (&req->queue, &ep->queue);
+	}  else
+		list_add_tail(&req->queue, &ep->queue);
 	spin_unlock_irqrestore (&dum->lock, flags);
 
 	/* real hardware would likely enable transfers here, in case

drivers/usb/gadget/f_acm.c

@@ -47,18 +47,37 @@ struct f_acm {
 	u8				ctrl_id, data_id;
 	u8				port_num;
 
-	struct usb_descriptor_header	**fs_function;
+	u8				pending;
+
+	/* lock is mostly for pending and notify_req ... they get accessed
+	 * by callbacks both from tty (open/close/break) under its spinlock,
+	 * and notify_req.complete() which can't use that lock.
+	 */
+	spinlock_t			lock;
+
 	struct acm_ep_descs		fs;
-	struct usb_descriptor_header	**hs_function;
 	struct acm_ep_descs		hs;
 
 	struct usb_ep			*notify;
 	struct usb_endpoint_descriptor	*notify_desc;
+	struct usb_request		*notify_req;
 
 	struct usb_cdc_line_coding	port_line_coding;	/* 8-N-1 etc */
+
+	/* SetControlLineState request -- CDC 1.1 section 6.2.14 (INPUT) */
 	u16				port_handshake_bits;
-#define RS232_RTS	(1 << 1)	/* unused with full duplex */
-#define RS232_DTR	(1 << 0)	/* host is ready for data r/w */
+#define ACM_CTRL_RTS	(1 << 1)	/* unused with full duplex */
+#define ACM_CTRL_DTR	(1 << 0)	/* host is ready for data r/w */
+
+	/* SerialState notification -- CDC 1.1 section 6.3.5 (OUTPUT) */
+	u16				serial_state;
+#define ACM_CTRL_OVERRUN	(1 << 6)
+#define ACM_CTRL_PARITY		(1 << 5)
+#define ACM_CTRL_FRAMING	(1 << 4)
+#define ACM_CTRL_RI		(1 << 3)
+#define ACM_CTRL_BRK		(1 << 2)
+#define ACM_CTRL_DSR		(1 << 1)
+#define ACM_CTRL_DCD		(1 << 0)
 };
 
 static inline struct f_acm *func_to_acm(struct usb_function *f)
@@ -66,12 +85,17 @@ static inline struct f_acm *func_to_acm(struct usb_function *f)
 	return container_of(f, struct f_acm, port.func);
 }
 
+static inline struct f_acm *port_to_acm(struct gserial *p)
+{
+	return container_of(p, struct f_acm, port);
+}
+
 /*-------------------------------------------------------------------------*/
 
 /* notification endpoint uses smallish and infrequent fixed-size messages */
 
 #define GS_LOG2_NOTIFY_INTERVAL		5	/* 1 << 5 == 32 msec */
-#define GS_NOTIFY_MAXPACKET		8
+#define GS_NOTIFY_MAXPACKET		10	/* notification + 2 bytes */
 
 /* interface and class descriptors: */
 
@@ -117,7 +141,7 @@ static struct usb_cdc_acm_descriptor acm_descriptor __initdata = {
 	.bLength =		sizeof(acm_descriptor),
 	.bDescriptorType =	USB_DT_CS_INTERFACE,
 	.bDescriptorSubType =	USB_CDC_ACM_TYPE,
-	.bmCapabilities =	(1 << 1),
+	.bmCapabilities =	USB_CDC_CAP_LINE,
 };
 
 static struct usb_cdc_union_desc acm_union_desc __initdata = {
@@ -277,6 +301,11 @@ static int acm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
 
 	/* composite driver infrastructure handles everything except
 	 * CDC class messages; interface activation uses set_alt().
+	 *
+	 * Note CDC spec table 4 lists the ACM request profile.  It requires
+	 * encapsulated command support ... we don't handle any, and respond
+	 * to them by stalling.  Options include get/set/clear comm features
+	 * (not that useful) and SEND_BREAK.
 	 */
 	switch ((ctrl->bRequestType << 8) | ctrl->bRequest) {
 
@@ -312,7 +341,7 @@ static int acm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
 		value = 0;
 
 		/* FIXME we should not allow data to flow until the
-		 * host sets the RS232_DTR bit; and when it clears
+		 * host sets the ACM_CTRL_DTR bit; and when it clears
 		 * that bit, we should return to that no-flow state.
 		 */
 		acm->port_handshake_bits = w_value;
@@ -350,9 +379,6 @@ static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 	/* we know alt == 0, so this is an activation or a reset */
 
 	if (intf == acm->ctrl_id) {
-		/* REVISIT this may need more work when we start to
-		 * send notifications ...
-		 */
 		if (acm->notify->driver_data) {
 			VDBG(cdev, "reset acm control interface %d\n", intf);
 			usb_ep_disable(acm->notify);
@@ -397,6 +423,128 @@ static void acm_disable(struct usb_function *f)
 
 /*-------------------------------------------------------------------------*/
 
+/**
+ * acm_cdc_notify - issue CDC notification to host
+ * @acm: wraps host to be notified
+ * @type: notification type
+ * @value: Refer to cdc specs, wValue field.
+ * @data: data to be sent
+ * @length: size of data
+ * Context: irqs blocked, acm->lock held, acm_notify_req non-null
+ *
+ * Returns zero on sucess or a negative errno.
+ *
+ * See section 6.3.5 of the CDC 1.1 specification for information
+ * about the only notification we issue:  SerialState change.
+ */
+static int acm_cdc_notify(struct f_acm *acm, u8 type, u16 value,
+		void *data, unsigned length)
+{
+	struct usb_ep			*ep = acm->notify;
+	struct usb_request		*req;
+	struct usb_cdc_notification	*notify;
+	const unsigned			len = sizeof(*notify) + length;
+	void				*buf;
+	int				status;
+
+	req = acm->notify_req;
+	acm->notify_req = NULL;
+	acm->pending = false;
+
+	req->length = len;
+	notify = req->buf;
+	buf = notify + 1;
+
+	notify->bmRequestType = USB_DIR_IN | USB_TYPE_CLASS
+			| USB_RECIP_INTERFACE;
+	notify->bNotificationType = type;
+	notify->wValue = cpu_to_le16(value);
+	notify->wIndex = cpu_to_le16(acm->ctrl_id);
+	notify->wLength = cpu_to_le16(length);
+	memcpy(buf, data, length);
+
+	status = usb_ep_queue(ep, req, GFP_ATOMIC);
+	if (status < 0) {
+		ERROR(acm->port.func.config->cdev,
+				"acm ttyGS%d can't notify serial state, %d\n",
+				acm->port_num, status);
+		acm->notify_req = req;
+	}
+
+	return status;
+}
+
+static int acm_notify_serial_state(struct f_acm *acm)
+{
+	struct usb_composite_dev *cdev = acm->port.func.config->cdev;
+	int			status;
+
+	spin_lock(&acm->lock);
+	if (acm->notify_req) {
+		DBG(cdev, "acm ttyGS%d serial state %04x\n",
+				acm->port_num, acm->serial_state);
+		status = acm_cdc_notify(acm, USB_CDC_NOTIFY_SERIAL_STATE,
+				0, &acm->serial_state, sizeof(acm->serial_state));
+	} else {
+		acm->pending = true;
+		status = 0;
+	}
+	spin_unlock(&acm->lock);
+	return status;
+}
+
+static void acm_cdc_notify_complete(struct usb_ep *ep, struct usb_request *req)
+{
+	struct f_acm		*acm = req->context;
+	u8			doit = false;
+
+	/* on this call path we do NOT hold the port spinlock,
+	 * which is why ACM needs its own spinlock
+	 */
+	spin_lock(&acm->lock);
+	if (req->status != -ESHUTDOWN)
+		doit = acm->pending;
+	acm->notify_req = req;
+	spin_unlock(&acm->lock);
+
+	if (doit)
+		acm_notify_serial_state(acm);
+}
+
+/* connect == the TTY link is open */
+
+static void acm_connect(struct gserial *port)
+{
+	struct f_acm		*acm = port_to_acm(port);
+
+	acm->serial_state |= ACM_CTRL_DSR | ACM_CTRL_DCD;
+	acm_notify_serial_state(acm);
+}
+
+static void acm_disconnect(struct gserial *port)
+{
+	struct f_acm		*acm = port_to_acm(port);
+
+	acm->serial_state &= ~(ACM_CTRL_DSR | ACM_CTRL_DCD);
+	acm_notify_serial_state(acm);
+}
+
+static int acm_send_break(struct gserial *port, int duration)
+{
+	struct f_acm		*acm = port_to_acm(port);
+	u16			state;
+
+	state = acm->serial_state;
+	state &= ~ACM_CTRL_BRK;
+	if (duration)
+		state |= ACM_CTRL_BRK;
+
+	acm->serial_state = state;
+	return acm_notify_serial_state(acm);
+}
+
+/*-------------------------------------------------------------------------*/
+
 /* ACM function driver setup/binding */
 static int __init
 acm_bind(struct usb_configuration *c, struct usb_function *f)
@@ -445,8 +593,20 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
 	acm->notify = ep;
 	ep->driver_data = cdev;	/* claim */
 
+	/* allocate notification */
+	acm->notify_req = gs_alloc_req(ep,
+			sizeof(struct usb_cdc_notification) + 2,
+			GFP_KERNEL);
+	if (!acm->notify_req)
+		goto fail;
+
+	acm->notify_req->complete = acm_cdc_notify_complete;
+	acm->notify_req->context = acm;
+
 	/* copy descriptors, and track endpoint copies */
 	f->descriptors = usb_copy_descriptors(acm_fs_function);
+	if (!f->descriptors)
+		goto fail;
 
 	acm->fs.in = usb_find_endpoint(acm_fs_function,
 			f->descriptors, &acm_fs_in_desc);
@@ -478,8 +638,6 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
 				f->hs_descriptors, &acm_hs_notify_desc);
 	}
 
-	/* FIXME provide a callback for triggering notifications */
-
 	DBG(cdev, "acm ttyGS%d: %s speed IN/%s OUT/%s NOTIFY/%s\n",
 			acm->port_num,
 			gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
@@ -488,6 +646,9 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
 	return 0;
 
 fail:
+	if (acm->notify_req)
+		gs_free_req(acm->notify, acm->notify_req);
+
 	/* we might as well release our claims on endpoints */
 	if (acm->notify)
 		acm->notify->driver_data = NULL;
@@ -504,10 +665,13 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
 static void
 acm_unbind(struct usb_configuration *c, struct usb_function *f)
 {
+	struct f_acm		*acm = func_to_acm(f);
+
 	if (gadget_is_dualspeed(c->cdev->gadget))
 		usb_free_descriptors(f->hs_descriptors);
 	usb_free_descriptors(f->descriptors);
-	kfree(func_to_acm(f));
+	gs_free_req(acm->notify, acm->notify_req);
+	kfree(acm);
 }
 
 /* Some controllers can't support CDC ACM ... */
@@ -571,8 +735,14 @@ int __init acm_bind_config(struct usb_configuration *c, u8 port_num)
 	if (!acm)
 		return -ENOMEM;
 
+	spin_lock_init(&acm->lock);
+
 	acm->port_num = port_num;
 
+	acm->port.connect = acm_connect;
+	acm->port.disconnect = acm_disconnect;
+	acm->port.send_break = acm_send_break;
+
 	acm->port.func.name = "acm";
 	acm->port.func.strings = acm_strings;
 	/* descriptors are per-instance copies */

drivers/usb/gadget/f_ecm.c

@@ -63,9 +63,7 @@ struct f_ecm {
 
 	char				ethaddr[14];
 
-	struct usb_descriptor_header	**fs_function;
 	struct ecm_ep_descs		fs;
-	struct usb_descriptor_header	**hs_function;
 	struct ecm_ep_descs		hs;
 
 	struct usb_ep			*notify;

drivers/usb/gadget/f_rndis.c

@@ -85,9 +85,7 @@ struct f_rndis {
 	u8				ethaddr[ETH_ALEN];
 	int				config;
 
-	struct usb_descriptor_header	**fs_function;
 	struct rndis_ep_descs		fs;
-	struct usb_descriptor_header	**hs_function;
 	struct rndis_ep_descs		hs;
 
 	struct usb_ep			*notify;

drivers/usb/gadget/f_serial.c

@@ -36,9 +36,7 @@ struct f_gser {
 	u8				data_id;
 	u8				port_num;
 
-	struct usb_descriptor_header	**fs_function;
 	struct gser_descs		fs;
-	struct usb_descriptor_header	**hs_function;
 	struct gser_descs		hs;
 };
 

drivers/usb/gadget/f_subset.c

@@ -66,9 +66,7 @@ struct f_gether {
 
 	char				ethaddr[14];
 
-	struct usb_descriptor_header	**fs_function;
 	struct geth_descs		fs;
-	struct usb_descriptor_header	**hs_function;
 	struct geth_descs		hs;
 };
 

drivers/usb/gadget/gadget_chips.h

@@ -11,6 +11,10 @@
  * Some are available on 2.4 kernels; several are available, but not
  * yet pushed in the 2.6 mainline tree.
  */
+
+#ifndef __GADGET_CHIPS_H
+#define __GADGET_CHIPS_H
+
 #ifdef CONFIG_USB_GADGET_NET2280
 #define	gadget_is_net2280(g)	!strcmp("net2280", (g)->name)
 #else
@@ -237,3 +241,5 @@ static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
 	/* Everything else is *presumably* fine ... */
 	return true;
 }
+
+#endif /* __GADGET_CHIPS_H */

drivers/usb/gadget/omap_udc.c

@@ -54,6 +54,7 @@
 
 #include <mach/dma.h>
 #include <mach/usb.h>
+#include <mach/control.h>
 
 #include "omap_udc.h"
 
@@ -2310,10 +2311,10 @@ static int proc_otg_show(struct seq_file *s)
 	u32		trans;
 	char		*ctrl_name;
 
-	tmp = OTG_REV_REG;
+	tmp = omap_readl(OTG_REV);
 	if (cpu_is_omap24xx()) {
 		ctrl_name = "control_devconf";
-		trans = CONTROL_DEVCONF_REG;
+		trans = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 	} else {
 		ctrl_name = "tranceiver_ctrl";
 		trans = omap_readw(USB_TRANSCEIVER_CTRL);

drivers/usb/gadget/u_serial.h

@@ -23,8 +23,7 @@
  * style I/O using the USB peripheral endpoints listed here, including
  * hookups to sysfs and /dev for each logical "tty" device.
  *
- * REVISIT need TTY --> USB event flow too, so ACM can report open/close
- * as carrier detect events.  Model after ECM.  There's more ACM state too.
+ * REVISIT at least ACM could support tiocmget() if needed.
  *
  * REVISIT someday, allow multiplexing several TTYs over these endpoints.
  */
@@ -41,8 +40,17 @@ struct gserial {
 
 	/* REVISIT avoid this CDC-ACM support harder ... */
 	struct usb_cdc_line_coding port_line_coding;	/* 9600-8-N-1 etc */
+
+	/* notification callbacks */
+	void (*connect)(struct gserial *p);
+	void (*disconnect)(struct gserial *p);
+	int (*send_break)(struct gserial *p, int duration);
 };
 
+/* utilities to allocate/free request and buffer */
+struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t flags);
+void gs_free_req(struct usb_ep *, struct usb_request *req);
+
 /* port setup/teardown is handled by gadget driver */
 int gserial_setup(struct usb_gadget *g, unsigned n_ports);
 void gserial_cleanup(void);

drivers/usb/host/isp1760-hcd.c

@@ -126,9 +126,8 @@ static void isp1760_writel(const unsigned int val, __u32 __iomem *regs)
  * doesn't quite work because some people have to enforce 32-bit access
  */
 static void priv_read_copy(struct isp1760_hcd *priv, u32 *src,
-		__u32 __iomem *dst, u32 offset, u32 len)
+		__u32 __iomem *dst, u32 len)
 {
-	struct usb_hcd *hcd = priv_to_hcd(priv);
 	u32 val;
 	u8 *buff8;
 
@@ -136,11 +135,6 @@ static void priv_read_copy(struct isp1760_hcd *priv, u32 *src,
 		printk(KERN_ERR "ERROR: buffer: %p len: %d\n", src, len);
 		return;
 	}
-	isp1760_writel(offset,  hcd->regs + HC_MEMORY_REG);
-	/* XXX
-	 * 90nsec delay, the spec says something how this could be avoided.
-	 */
-	mdelay(1);
 
 	while (len >= 4) {
 		*src = __raw_readl(dst);
@@ -987,8 +981,20 @@ static void do_atl_int(struct usb_hcd *usb_hcd)
 			printk(KERN_ERR "qh is 0\n");
 			continue;
 		}
-		priv_read_copy(priv, (u32 *)&ptd, usb_hcd->regs + atl_regs,
-				atl_regs, sizeof(ptd));
+		isp1760_writel(atl_regs + ISP_BANK(0), usb_hcd->regs +
+				HC_MEMORY_REG);
+		isp1760_writel(payload  + ISP_BANK(1), usb_hcd->regs +
+				HC_MEMORY_REG);
+		/*
+		 * write bank1 address twice to ensure the 90ns delay (time
+		 * between BANK0 write and the priv_read_copy() call is at
+		 * least 3*t_WHWL + 2*t_w11 = 3*25ns + 2*17ns = 92ns)
+		 */
+		isp1760_writel(payload  + ISP_BANK(1), usb_hcd->regs +
+				HC_MEMORY_REG);
+
+		priv_read_copy(priv, (u32 *)&ptd, usb_hcd->regs + atl_regs +
+				ISP_BANK(0), sizeof(ptd));
 
 		dw1 = le32_to_cpu(ptd.dw1);
 		dw2 = le32_to_cpu(ptd.dw2);
@@ -1091,7 +1097,7 @@ static void do_atl_int(struct usb_hcd *usb_hcd)
 			case IN_PID:
 				priv_read_copy(priv,
 					priv->atl_ints[queue_entry].data_buffer,
-					usb_hcd->regs + payload, payload,
+					usb_hcd->regs + payload + ISP_BANK(1),
 					length);
 
 			case OUT_PID:
@@ -1122,11 +1128,11 @@ static void do_atl_int(struct usb_hcd *usb_hcd)
 		} else if (usb_pipebulk(urb->pipe) && (length < qtd->length)) {
 			/* short BULK received */
 
-			printk(KERN_ERR "short bulk, %d instead %zu\n", length,
-					qtd->length);
 			if (urb->transfer_flags & URB_SHORT_NOT_OK) {
 				urb->status = -EREMOTEIO;
-				printk(KERN_ERR "not okey\n");
+				isp1760_dbg(priv, "short bulk, %d instead %zu "
+					"with URB_SHORT_NOT_OK flag.\n",
+					length, qtd->length);
 			}
 
 			if (urb->status == -EINPROGRESS)
@@ -1206,8 +1212,20 @@ static void do_intl_int(struct usb_hcd *usb_hcd)
 			continue;
 		}
 
-		priv_read_copy(priv, (u32 *)&ptd, usb_hcd->regs + int_regs,
-				int_regs, sizeof(ptd));
+		isp1760_writel(int_regs + ISP_BANK(0), usb_hcd->regs +
+				HC_MEMORY_REG);
+		isp1760_writel(payload  + ISP_BANK(1), usb_hcd->regs +
+				HC_MEMORY_REG);
+		/*
+		 * write bank1 address twice to ensure the 90ns delay (time
+		 * between BANK0 write and the priv_read_copy() call is at
+		 * least 3*t_WHWL + 2*t_w11 = 3*25ns + 2*17ns = 92ns)
+		 */
+		isp1760_writel(payload  + ISP_BANK(1), usb_hcd->regs +
+				HC_MEMORY_REG);
+
+		priv_read_copy(priv, (u32 *)&ptd, usb_hcd->regs + int_regs +
+				ISP_BANK(0), sizeof(ptd));
 		dw1 = le32_to_cpu(ptd.dw1);
 		dw3 = le32_to_cpu(ptd.dw3);
 		check_int_err_status(le32_to_cpu(ptd.dw4));
@@ -1242,7 +1260,7 @@ static void do_intl_int(struct usb_hcd *usb_hcd)
 			case IN_PID:
 				priv_read_copy(priv,
 					priv->int_ints[queue_entry].data_buffer,
-					usb_hcd->regs + payload , payload,
+					usb_hcd->regs + payload + ISP_BANK(1),
 					length);
 			case OUT_PID:
 
@@ -1615,8 +1633,7 @@ static int isp1760_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 		return -EPIPE;
 	}
 
-	isp1760_prepare_enqueue(priv, urb, &qtd_list, mem_flags, pe);
-	return 0;
+	return isp1760_prepare_enqueue(priv, urb, &qtd_list, mem_flags, pe);
 }
 
 static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,

drivers/usb/host/isp1760-hcd.h

@@ -54,6 +54,8 @@ void deinit_kmem_cache(void);
 #define BUFFER_MAP		0x7
 
 #define HC_MEMORY_REG		0x33c
+#define ISP_BANK(x)		((x) << 16)
+
 #define HC_PORT1_CTRL		0x374
 #define PORT1_POWER		(3 << 3)
 #define PORT1_INIT1		(1 << 7)
@@ -119,6 +121,9 @@ struct inter_packet_info {
 typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh,
 		struct isp1760_qtd *qtd);
 
+#define isp1760_dbg(priv, fmt, args...) \
+	dev_dbg(priv_to_hcd(priv)->self.controller, fmt, ##args)
+
 #define isp1760_info(priv, fmt, args...) \
 	dev_info(priv_to_hcd(priv)->self.controller, fmt, ##args)
 

drivers/usb/host/ohci-hcd.c

@@ -86,6 +86,21 @@ static void ohci_stop (struct usb_hcd *hcd);
 static int ohci_restart (struct ohci_hcd *ohci);
 #endif
 
+#ifdef CONFIG_PCI
+static void quirk_amd_pll(int state);
+static void amd_iso_dev_put(void);
+#else
+static inline void quirk_amd_pll(int state)
+{
+	return;
+}
+static inline void amd_iso_dev_put(void)
+{
+	return;
+}
+#endif
+
+
 #include "ohci-hub.c"
 #include "ohci-dbg.c"
 #include "ohci-mem.c"
@@ -483,6 +498,9 @@ static int ohci_init (struct ohci_hcd *ohci)
 	int ret;
 	struct usb_hcd *hcd = ohci_to_hcd(ohci);
 
+	if (distrust_firmware)
+		ohci->flags |= OHCI_QUIRK_HUB_POWER;
+
 	disable (ohci);
 	ohci->regs = hcd->regs;
 
@@ -689,7 +707,8 @@ static int ohci_run (struct ohci_hcd *ohci)
 		temp |= RH_A_NOCP;
 		temp &= ~(RH_A_POTPGT | RH_A_NPS);
 		ohci_writel (ohci, temp, &ohci->regs->roothub.a);
-	} else if ((ohci->flags & OHCI_QUIRK_AMD756) || distrust_firmware) {
+	} else if ((ohci->flags & OHCI_QUIRK_AMD756) ||
+			(ohci->flags & OHCI_QUIRK_HUB_POWER)) {
 		/* hub power always on; required for AMD-756 and some
 		 * Mac platforms.  ganged overcurrent reporting, if any.
 		 */
@@ -882,6 +901,8 @@ static void ohci_stop (struct usb_hcd *hcd)
 
 	if (quirk_zfmicro(ohci))
 		del_timer(&ohci->unlink_watchdog);
+	if (quirk_amdiso(ohci))
+		amd_iso_dev_put();
 
 	remove_debug_files (ohci);
 	ohci_mem_cleanup (ohci);

drivers/usb/host/ohci-hub.c

@@ -483,6 +483,13 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
 		length++;
 	}
 
+	/* Some broken controllers never turn off RHCS in the interrupt
+	 * status register.  For their sake we won't re-enable RHSC
+	 * interrupts if the flag is already set.
+	 */
+	if (ohci_readl(ohci, &ohci->regs->intrstatus) & OHCI_INTR_RHSC)
+		changed = 1;
+
 	/* look at each port */
 	for (i = 0; i < ohci->num_ports; i++) {
 		u32	status = roothub_portstatus (ohci, i);
@@ -572,8 +579,6 @@ static int ohci_start_port_reset (struct usb_hcd *hcd, unsigned port)
 	return 0;
 }
 
-static void start_hnp(struct ohci_hcd *ohci);
-
 #else
 
 #define	ohci_start_port_reset		NULL
@@ -760,7 +765,7 @@ static int ohci_hub_control (
 #ifdef	CONFIG_USB_OTG
 			if (hcd->self.otg_port == (wIndex + 1)
 					&& hcd->self.b_hnp_enable)
-				start_hnp(ohci);
+				ohci->start_hnp(ohci);
 			else
 #endif
 			ohci_writel (ohci, RH_PS_PSS,

drivers/usb/host/ohci-omap.c

@@ -225,6 +225,7 @@ static int ohci_omap_init(struct usb_hcd *hcd)
 			dev_err(hcd->self.controller, "can't find transceiver\n");
 			return -ENODEV;
 		}
+		ohci->start_hnp = start_hnp;
 	}
 #endif
 
@@ -260,7 +261,7 @@ static int ohci_omap_init(struct usb_hcd *hcd)
 			omap_cfg_reg(W4_USB_HIGHZ);
 		}
 		ohci_writel(ohci, rh, &ohci->regs->roothub.a);
-		distrust_firmware = 0;
+		ohci->flags &= ~OHCI_QUIRK_HUB_POWER;
 	} else if (machine_is_nokia770()) {
 		/* We require a self-powered hub, which should have
 		 * plenty of power. */

drivers/usb/host/ohci-pci.c

@@ -18,6 +18,28 @@
 #error "This file is PCI bus glue.  CONFIG_PCI must be defined."
 #endif
 
+#include <linux/pci.h>
+#include <linux/io.h>
+
+
+/* constants used to work around PM-related transfer
+ * glitches in some AMD 700 series southbridges
+ */
+#define AB_REG_BAR	0xf0
+#define AB_INDX(addr)	((addr) + 0x00)
+#define AB_DATA(addr)	((addr) + 0x04)
+#define AX_INDXC	0X30
+#define AX_DATAC	0x34
+
+#define NB_PCIE_INDX_ADDR	0xe0
+#define NB_PCIE_INDX_DATA	0xe4
+#define PCIE_P_CNTL		0x10040
+#define BIF_NB			0x10002
+
+static struct pci_dev *amd_smbus_dev;
+static struct pci_dev *amd_hb_dev;
+static int amd_ohci_iso_count;
+
 /*-------------------------------------------------------------------------*/
 
 static int broken_suspend(struct usb_hcd *hcd)
@@ -143,6 +165,103 @@ static int ohci_quirk_nec(struct usb_hcd *hcd)
 	return 0;
 }
 
+static int ohci_quirk_amd700(struct usb_hcd *hcd)
+{
+	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+	u8 rev = 0;
+
+	if (!amd_smbus_dev)
+		amd_smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI,
+				PCI_DEVICE_ID_ATI_SBX00_SMBUS, NULL);
+	if (!amd_smbus_dev)
+		return 0;
+
+	pci_read_config_byte(amd_smbus_dev, PCI_REVISION_ID, &rev);
+	if ((rev > 0x3b) || (rev < 0x30)) {
+		pci_dev_put(amd_smbus_dev);
+		amd_smbus_dev = NULL;
+		return 0;
+	}
+
+	amd_ohci_iso_count++;
+
+	if (!amd_hb_dev)
+		amd_hb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x9600, NULL);
+
+	ohci->flags |= OHCI_QUIRK_AMD_ISO;
+	ohci_dbg(ohci, "enabled AMD ISO transfers quirk\n");
+
+	return 0;
+}
+
+/*
+ * The hardware normally enables the A-link power management feature, which
+ * lets the system lower the power consumption in idle states.
+ *
+ * Assume the system is configured to have USB 1.1 ISO transfers going
+ * to or from a USB device.  Without this quirk, that stream may stutter
+ * or have breaks occasionally.  For transfers going to speakers, this
+ * makes a very audible mess...
+ *
+ * That audio playback corruption is due to the audio stream getting
+ * interrupted occasionally when the link goes in lower power state
+ * This USB quirk prevents the link going into that lower power state
+ * during audio playback or other ISO operations.
+ */
+static void quirk_amd_pll(int on)
+{
+	u32 addr;
+	u32 val;
+	u32 bit = (on > 0) ? 1 : 0;
+
+	pci_read_config_dword(amd_smbus_dev, AB_REG_BAR, &addr);
+
+	/* BIT names/meanings are NDA-protected, sorry ... */
+
+	outl(AX_INDXC, AB_INDX(addr));
+	outl(0x40, AB_DATA(addr));
+	outl(AX_DATAC, AB_INDX(addr));
+	val = inl(AB_DATA(addr));
+	val &= ~((1 << 3) | (1 << 4) | (1 << 9));
+	val |= (bit << 3) | ((!bit) << 4) | ((!bit) << 9);
+	outl(val, AB_DATA(addr));
+
+	if (amd_hb_dev) {
+		addr = PCIE_P_CNTL;
+		pci_write_config_dword(amd_hb_dev, NB_PCIE_INDX_ADDR, addr);
+
+		pci_read_config_dword(amd_hb_dev, NB_PCIE_INDX_DATA, &val);
+		val &= ~(1 | (1 << 3) | (1 << 4) | (1 << 9) | (1 << 12));
+		val |= bit | (bit << 3) | (bit << 12);
+		val |= ((!bit) << 4) | ((!bit) << 9);
+		pci_write_config_dword(amd_hb_dev, NB_PCIE_INDX_DATA, val);
+
+		addr = BIF_NB;
+		pci_write_config_dword(amd_hb_dev, NB_PCIE_INDX_ADDR, addr);
+
+		pci_read_config_dword(amd_hb_dev, NB_PCIE_INDX_DATA, &val);
+		val &= ~(1 << 8);
+		val |= bit << 8;
+		pci_write_config_dword(amd_hb_dev, NB_PCIE_INDX_DATA, val);
+	}
+}
+
+static void amd_iso_dev_put(void)
+{
+	amd_ohci_iso_count--;
+	if (amd_ohci_iso_count == 0) {
+		if (amd_smbus_dev) {
+			pci_dev_put(amd_smbus_dev);
+			amd_smbus_dev = NULL;
+		}
+		if (amd_hb_dev) {
+			pci_dev_put(amd_hb_dev);
+			amd_hb_dev = NULL;
+		}
+	}
+
+}
+
 /* List of quirks for OHCI */
 static const struct pci_device_id ohci_pci_quirks[] = {
 	{
@@ -181,6 +300,19 @@ static const struct pci_device_id ohci_pci_quirks[] = {
 		PCI_DEVICE(PCI_VENDOR_ID_ITE, 0x8152),
 		.driver_data = (unsigned long) broken_suspend,
 	},
+	{
+		PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4397),
+		.driver_data = (unsigned long)ohci_quirk_amd700,
+	},
+	{
+		PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4398),
+		.driver_data = (unsigned long)ohci_quirk_amd700,
+	},
+	{
+		PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4399),
+		.driver_data = (unsigned long)ohci_quirk_amd700,
+	},
+
 	/* FIXME for some of the early AMD 760 southbridges, OHCI
 	 * won't work at all.  blacklist them.
 	 */

drivers/usb/host/ohci-q.c

@@ -49,6 +49,9 @@ __acquires(ohci->lock)
 	switch (usb_pipetype (urb->pipe)) {
 	case PIPE_ISOCHRONOUS:
 		ohci_to_hcd(ohci)->self.bandwidth_isoc_reqs--;
+		if (ohci_to_hcd(ohci)->self.bandwidth_isoc_reqs == 0
+				&& quirk_amdiso(ohci))
+			quirk_amd_pll(1);
 		break;
 	case PIPE_INTERRUPT:
 		ohci_to_hcd(ohci)->self.bandwidth_int_reqs--;
@@ -677,6 +680,9 @@ static void td_submit_urb (
 				data + urb->iso_frame_desc [cnt].offset,
 				urb->iso_frame_desc [cnt].length, urb, cnt);
 		}
+		if (ohci_to_hcd(ohci)->self.bandwidth_isoc_reqs == 0
+				&& quirk_amdiso(ohci))
+			quirk_amd_pll(0);
 		periodic = ohci_to_hcd(ohci)->self.bandwidth_isoc_reqs++ == 0
 			&& ohci_to_hcd(ohci)->self.bandwidth_int_reqs == 0;
 		break;

drivers/usb/host/ohci.h

@@ -371,6 +371,7 @@ struct ohci_hcd {
 	 * other external transceivers should be software-transparent
 	 */
 	struct otg_transceiver	*transceiver;
+	void (*start_hnp)(struct ohci_hcd *ohci);
 
 	/*
 	 * memory management for queue data structures
@@ -399,6 +400,8 @@ struct ohci_hcd {
 #define	OHCI_QUIRK_ZFMICRO	0x20			/* Compaq ZFMicro chipset*/
 #define	OHCI_QUIRK_NEC		0x40			/* lost interrupts */
 #define	OHCI_QUIRK_FRAME_NO	0x80			/* no big endian frame_no shift */
+#define	OHCI_QUIRK_HUB_POWER	0x100			/* distrust firmware power/oc setup */
+#define	OHCI_QUIRK_AMD_ISO	0x200			/* ISO transfers*/
 	// there are also chip quirks/bugs in init logic
 
 	struct work_struct	nec_work;	/* Worker for NEC quirk */
@@ -426,6 +429,10 @@ static inline int quirk_zfmicro(struct ohci_hcd *ohci)
 {
 	return ohci->flags & OHCI_QUIRK_ZFMICRO;
 }
+static inline int quirk_amdiso(struct ohci_hcd *ohci)
+{
+	return ohci->flags & OHCI_QUIRK_AMD_ISO;
+}
 #else
 static inline int quirk_nec(struct ohci_hcd *ohci)
 {
@@ -435,6 +442,10 @@ static inline int quirk_zfmicro(struct ohci_hcd *ohci)
 {
 	return 0;
 }
+static inline int quirk_amdiso(struct ohci_hcd *ohci)
+{
+	return 0;
+}
 #endif
 
 /* convert between an hcd pointer and the corresponding ohci_hcd */

drivers/usb/host/r8a66597-hcd.c

@@ -964,11 +964,34 @@ static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
 	disable_irq_nrdy(r8a66597, pipenum);
 }
 
+static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
+{
+	mod_timer(&r8a66597->rh_timer,
+			jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
+}
+
+static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
+					int connect)
+{
+	struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
+
+	rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
+	rh->scount = R8A66597_MAX_SAMPLING;
+	if (connect)
+		rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
+	else
+		rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
+	rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
+
+	r8a66597_root_hub_start_polling(r8a66597);
+}
+
 /* this function must be called with interrupt disabled */
 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
 					u16 syssts)
 {
 	if (syssts == SE0) {
+		r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
 		r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
 		return;
 	}
@@ -1002,13 +1025,10 @@ static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
 {
 	struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
 
-	r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
-	r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
-
 	disable_r8a66597_pipe_all(r8a66597, dev);
 	free_usb_address(r8a66597, dev);
 
-	r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
+	start_root_hub_sampling(r8a66597, port, 0);
 }
 
 /* this function must be called with interrupt disabled */
@@ -1551,23 +1571,6 @@ static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
 	}
 }
 
-static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
-{
-	mod_timer(&r8a66597->rh_timer,
-			jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
-}
-
-static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
-{
-	struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
-
-	rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
-	rh->scount = R8A66597_MAX_SAMPLING;
-	r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
-					 | (1 << USB_PORT_FEAT_C_CONNECTION);
-	r8a66597_root_hub_start_polling(r8a66597);
-}
-
 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
 {
 	struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
@@ -1594,7 +1597,7 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
 			r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
 
 			/* start usb bus sampling */
-			start_root_hub_sampling(r8a66597, 1);
+			start_root_hub_sampling(r8a66597, 1, 1);
 		}
 		if (mask2 & DTCH) {
 			r8a66597_write(r8a66597, ~DTCH, INTSTS2);
@@ -1609,7 +1612,7 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
 			r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
 
 			/* start usb bus sampling */
-			start_root_hub_sampling(r8a66597, 0);
+			start_root_hub_sampling(r8a66597, 0, 1);
 		}
 		if (mask1 & DTCH) {
 			r8a66597_write(r8a66597, ~DTCH, INTSTS1);

drivers/usb/misc/Kconfig

@@ -42,16 +42,6 @@ config USB_ADUTUX
 	  To compile this driver as a module, choose M here.  The module
 	  will be called adutux.
 
-config USB_AUERSWALD
-	tristate "USB Auerswald ISDN support"
-	depends on USB
-	help
-	  Say Y here if you want to connect an Auerswald USB ISDN Device
-	  to your computer's USB port.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called auerswald.
-
 config USB_RIO500
 	tristate "USB Diamond Rio500 support"
 	depends on USB

drivers/usb/misc/Makefile

@@ -5,7 +5,6 @@
 
 obj-$(CONFIG_USB_ADUTUX)	+= adutux.o
 obj-$(CONFIG_USB_APPLEDISPLAY)	+= appledisplay.o
-obj-$(CONFIG_USB_AUERSWALD)	+= auerswald.o
 obj-$(CONFIG_USB_BERRY_CHARGE)	+= berry_charge.o
 obj-$(CONFIG_USB_CYPRESS_CY7C63)+= cypress_cy7c63.o
 obj-$(CONFIG_USB_CYTHERM)	+= cytherm.o

drivers/usb/musb/Kconfig

+#
+# USB Dual Role (OTG-ready) Controller Drivers
+# for silicon based on Mentor Graphics INVENTRA designs
+#
+
+comment "Enable Host or Gadget support to see Inventra options"
+	depends on !USB && USB_GADGET=n
+
+# (M)HDRC = (Multipoint) Highspeed Dual-Role Controller
+config USB_MUSB_HDRC
+	depends on (USB || USB_GADGET) && HAVE_CLK
+	select TWL4030_USB if MACH_OMAP_3430SDP
+	tristate 'Inventra Highspeed Dual Role Controller (TI, ...)'
+	help
+	  Say Y here if your system has a dual role high speed USB
+	  controller based on the Mentor Graphics silicon IP.  Then
+	  configure options to match your silicon and the board
+	  it's being used with, including the USB peripheral role,
+	  or the USB host role, or both.
+
+	  Texas Instruments parts using this IP include DaVinci 644x,
+	  OMAP 243x, OMAP 343x, and TUSB 6010.
+
+	  If you do not know what this is, please say N.
+
+	  To compile this driver as a module, choose M here; the
+	  module will be called "musb_hdrc".
+
+config USB_MUSB_SOC
+	boolean
+	depends on USB_MUSB_HDRC
+	default y if ARCH_DAVINCI
+	default y if ARCH_OMAP2430
+	default y if ARCH_OMAP34XX
+	help
+	  Use a static <asm/arch/hdrc_cnf.h> file to describe how the
+	  controller is configured (endpoints, mechanisms, etc) on the
+	  current iteration of a given system-on-chip.
+
+comment "DaVinci 644x USB support"
+	depends on USB_MUSB_HDRC && ARCH_DAVINCI
+
+comment "OMAP 243x high speed USB support"
+	depends on USB_MUSB_HDRC && ARCH_OMAP2430
+
+comment "OMAP 343x high speed USB support"
+	depends on USB_MUSB_HDRC && ARCH_OMAP34XX
+
+config USB_TUSB6010
+	boolean "TUSB 6010 support"
+	depends on USB_MUSB_HDRC && !USB_MUSB_SOC
+	default y
+	help
+	  The TUSB 6010 chip, from Texas Instruments, connects a discrete
+	  HDRC core using a 16-bit parallel bus (NOR flash style) or VLYNQ
+	  (a high speed serial link).  It can use system-specific external
+	  DMA controllers.
+
+choice
+	prompt "Driver Mode"
+	depends on USB_MUSB_HDRC
+	help
+	  Dual-Role devices can support both host and peripheral roles,
+	  as well as a the special "OTG Device" role which can switch
+	  between both roles as needed.
+
+# use USB_MUSB_HDRC_HCD not USB_MUSB_HOST to #ifdef host side support;
+# OTG needs both roles, not just USB_MUSB_HOST.
+config USB_MUSB_HOST
+	depends on USB
+	bool "USB Host"
+	help
+	  Say Y here if your system supports the USB host role.
+	  If it has a USB "A" (rectangular), "Mini-A" (uncommon),
+	  or "Mini-AB" connector, it supports the host role.
+	  (With a "Mini-AB" connector, you should enable USB OTG.)
+
+# use USB_GADGET_MUSB_HDRC not USB_MUSB_PERIPHERAL to #ifdef peripheral
+# side support ... OTG needs both roles
+config USB_MUSB_PERIPHERAL
+	depends on USB_GADGET
+	bool "USB Peripheral (gadget stack)"
+	select USB_GADGET_MUSB_HDRC
+	help
+	  Say Y here if your system supports the USB peripheral role.
+	  If it has a USB "B" (squarish), "Mini-B", or "Mini-AB"
+	  connector, it supports the peripheral role.
+	  (With a "Mini-AB" connector, you should enable USB OTG.)
+
+config USB_MUSB_OTG
+	depends on USB && USB_GADGET && PM && EXPERIMENTAL
+	bool "Both host and peripheral:  USB OTG (On The Go) Device"
+	select USB_GADGET_MUSB_HDRC
+	select USB_OTG
+	help
+	   The most notable feature of USB OTG is support for a
+	   "Dual-Role" device, which can act as either a device
+	   or a host.  The initial role choice can be changed
+	   later, when two dual-role devices talk to each other.
+
+	   At this writing, the OTG support in this driver is incomplete,
+	   omitting the mandatory HNP or SRP protocols.  However, some
+	   of the cable based role switching works.  (That is, grounding
+	   the ID pin switches the controller to host mode, while leaving
+	   it floating leaves it in peripheral mode.)
+
+	   Select this if your system has a Mini-AB connector, or
+	   to simplify certain kinds of configuration.
+
+	   To implement your OTG Targeted Peripherals List (TPL), enable
+	   USB_OTG_WHITELIST and update "drivers/usb/core/otg_whitelist.h"
+	   to match your requirements.
+
+endchoice
+
+# enable peripheral support (including with OTG)
+config USB_GADGET_MUSB_HDRC
+	bool
+	depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
+#	default y
+#	select USB_GADGET_DUALSPEED
+#	select USB_GADGET_SELECTED
+
+# enables host support (including with OTG)
+config USB_MUSB_HDRC_HCD
+	bool
+	depends on USB_MUSB_HDRC && (USB_MUSB_HOST || USB_MUSB_OTG)
+	select USB_OTG if USB_GADGET_MUSB_HDRC
+	default y
+
+
+config MUSB_PIO_ONLY
+	bool 'Disable DMA (always use PIO)'
+	depends on USB_MUSB_HDRC
+	default y if USB_TUSB6010
+	help
+	  All data is copied between memory and FIFO by the CPU.
+	  DMA controllers are ignored.
+
+	  Do not select 'n' here unless DMA support for your SOC or board
+	  is unavailable (or unstable).  When DMA is enabled at compile time,
+	  you can still disable it at run time using the "use_dma=n" module
+	  parameter.
+
+config USB_INVENTRA_DMA
+	bool
+	depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY
+	default ARCH_OMAP2430 || ARCH_OMAP34XX
+	help
+	  Enable DMA transfers using Mentor's engine.
+
+config USB_TI_CPPI_DMA
+	bool
+	depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY
+	default ARCH_DAVINCI
+	help
+	  Enable DMA transfers when TI CPPI DMA is available.
+
+config USB_TUSB_OMAP_DMA
+	bool
+	depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY
+	depends on USB_TUSB6010
+	depends on ARCH_OMAP
+	default y
+	help
+	  Enable DMA transfers on TUSB 6010 when OMAP DMA is available.
+
+config	USB_MUSB_LOGLEVEL
+	depends on USB_MUSB_HDRC
+	int  'Logging Level (0 - none / 3 - annoying / ... )'
+	default 0
+	help
+	  Set the logging level. 0 disables the debugging altogether,
+	  although when USB_DEBUG is set the value is at least 1.
+	  Starting at level 3, per-transfer (urb, usb_request, packet,
+	  or dma transfer) tracing may kick in.

drivers/usb/musb/Makefile

+#
+# for USB OTG silicon based on Mentor Graphics INVENTRA designs
+#
+
+musb_hdrc-objs := musb_core.o
+
+obj-$(CONFIG_USB_MUSB_HDRC)	+= musb_hdrc.o
+
+ifeq ($(CONFIG_ARCH_DAVINCI),y)
+	musb_hdrc-objs	+= davinci.o
+endif
+
+ifeq ($(CONFIG_USB_TUSB6010),y)
+	musb_hdrc-objs	+= tusb6010.o
+endif
+
+ifeq ($(CONFIG_ARCH_OMAP2430),y)
+	musb_hdrc-objs	+= omap2430.o
+endif
+
+ifeq ($(CONFIG_ARCH_OMAP3430),y)
+	musb_hdrc-objs	+= omap2430.o
+endif
+
+ifeq ($(CONFIG_USB_GADGET_MUSB_HDRC),y)
+	musb_hdrc-objs		+= musb_gadget_ep0.o musb_gadget.o
+endif
+
+ifeq ($(CONFIG_USB_MUSB_HDRC_HCD),y)
+	musb_hdrc-objs		+= musb_virthub.o musb_host.o
+endif
+
+# the kconfig must guarantee that only one of the
+# possible I/O schemes will be enabled at a time ...
+# PIO only, or DMA (several potential schemes).
+# though PIO is always there to back up DMA, and for ep0
+
+ifneq ($(CONFIG_MUSB_PIO_ONLY),y)
+
+  ifeq ($(CONFIG_USB_INVENTRA_DMA),y)
+    musb_hdrc-objs		+= musbhsdma.o
+
+  else
+    ifeq ($(CONFIG_USB_TI_CPPI_DMA),y)
+      musb_hdrc-objs		+= cppi_dma.o
+
+    else
+      ifeq ($(CONFIG_USB_TUSB_OMAP_DMA),y)
+        musb_hdrc-objs		+= tusb6010_omap.o
+
+      endif
+    endif
+  endif
+endif
+
+
+################################################################################
+
+# FIXME remove all these extra "-DMUSB_* things, stick to CONFIG_*
+
+ifeq ($(CONFIG_USB_INVENTRA_MUSB_HAS_AHB_ID),y)
+	EXTRA_CFLAGS += -DMUSB_AHB_ID
+endif
+
+# Debugging
+
+MUSB_DEBUG:=$(CONFIG_USB_MUSB_LOGLEVEL)
+
+ifeq ("$(strip $(MUSB_DEBUG))","")
+    ifdef CONFIG_USB_DEBUG
+	MUSB_DEBUG:=1
+    else
+	MUSB_DEBUG:=0
+    endif
+endif
+
+ifneq ($(MUSB_DEBUG),0)
+    EXTRA_CFLAGS += -DDEBUG
+
+    ifeq ($(CONFIG_PROC_FS),y)
+	musb_hdrc-objs		+= musb_procfs.o
+    endif
+
+endif
+
+EXTRA_CFLAGS += -DMUSB_DEBUG=$(MUSB_DEBUG)

drivers/usb/musb/cppi_dma.h

+/* Copyright (C) 2005-2006 by Texas Instruments */
+
+#ifndef _CPPI_DMA_H_
+#define _CPPI_DMA_H_
+
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/dmapool.h>
+
+#include "musb_dma.h"
+#include "musb_core.h"
+
+
+/* FIXME fully isolate CPPI from DaVinci ... the "CPPI generic" registers
+ * would seem to be shared with the TUSB6020 (over VLYNQ).
+ */
+
+#include "davinci.h"
+
+
+/* CPPI RX/TX state RAM */
+
+struct cppi_tx_stateram {
+	u32 tx_head;			/* "DMA packet" head descriptor */
+	u32 tx_buf;
+	u32 tx_current;			/* current descriptor */
+	u32 tx_buf_current;
+	u32 tx_info;			/* flags, remaining buflen */
+	u32 tx_rem_len;
+	u32 tx_dummy;			/* unused */
+	u32 tx_complete;
+};
+
+struct cppi_rx_stateram {
+	u32 rx_skipbytes;
+	u32 rx_head;
+	u32 rx_sop;			/* "DMA packet" head descriptor */
+	u32 rx_current;			/* current descriptor */
+	u32 rx_buf_current;
+	u32 rx_len_len;
+	u32 rx_cnt_cnt;
+	u32 rx_complete;
+};
+
+/* hw_options bits in CPPI buffer descriptors */
+#define CPPI_SOP_SET	((u32)(1 << 31))
+#define CPPI_EOP_SET	((u32)(1 << 30))
+#define CPPI_OWN_SET	((u32)(1 << 29))	/* owned by cppi */
+#define CPPI_EOQ_MASK	((u32)(1 << 28))
+#define CPPI_ZERO_SET	((u32)(1 << 23))	/* rx saw zlp; tx issues one */
+#define CPPI_RXABT_MASK	((u32)(1 << 19))	/* need more rx buffers */
+
+#define CPPI_RECV_PKTLEN_MASK 0xFFFF
+#define CPPI_BUFFER_LEN_MASK 0xFFFF
+
+#define CPPI_TEAR_READY ((u32)(1 << 31))
+
+/* CPPI data structure definitions */
+
+#define	CPPI_DESCRIPTOR_ALIGN	16	/* bytes; 5-dec docs say 4-byte align */
+
+struct cppi_descriptor {
+	/* hardware overlay */
+	u32		hw_next;	/* next buffer descriptor Pointer */
+	u32		hw_bufp;	/* i/o buffer pointer */
+	u32		hw_off_len;	/* buffer_offset16, buffer_length16 */
+	u32		hw_options;	/* flags:  SOP, EOP etc*/
+
+	struct cppi_descriptor *next;
+	dma_addr_t	dma;		/* address of this descriptor */
+	u32		buflen;		/* for RX: original buffer length */
+} __attribute__ ((aligned(CPPI_DESCRIPTOR_ALIGN)));
+
+
+struct cppi;
+
+/* CPPI  Channel Control structure */
+struct cppi_channel {
+	struct dma_channel	channel;
+
+	/* back pointer to the DMA controller structure */
+	struct cppi		*controller;
+
+	/* which direction of which endpoint? */
+	struct musb_hw_ep	*hw_ep;
+	bool			transmit;
+	u8			index;
+
+	/* DMA modes:  RNDIS or "transparent" */
+	u8			is_rndis;
+
+	/* book keeping for current transfer request */
+	dma_addr_t		buf_dma;
+	u32			buf_len;
+	u32			maxpacket;
+	u32			offset;		/* dma requested */
+
+	void __iomem		*state_ram;	/* CPPI state */
+
+	struct cppi_descriptor	*freelist;
+
+	/* BD management fields */
+	struct cppi_descriptor	*head;
+	struct cppi_descriptor	*tail;
+	struct cppi_descriptor	*last_processed;
+
+	/* use tx_complete in host role to track endpoints waiting for
+	 * FIFONOTEMPTY to clear.
+	 */
+	struct list_head	tx_complete;
+};
+
+/* CPPI DMA controller object */
+struct cppi {
+	struct dma_controller		controller;
+	struct musb			*musb;
+	void __iomem			*mregs;		/* Mentor regs */
+	void __iomem			*tibase;	/* TI/CPPI regs */
+
+	struct cppi_channel		tx[MUSB_C_NUM_EPT - 1];
+	struct cppi_channel		rx[MUSB_C_NUM_EPR - 1];
+
+	struct dma_pool			*pool;
+
+	struct list_head		tx_complete;
+};
+
+/* irq handling hook */
+extern void cppi_completion(struct musb *, u32 rx, u32 tx);
+
+#endif				/* end of ifndef _CPPI_DMA_H_ */

drivers/usb/musb/davinci.h

+/*
+ * Copyright (C) 2005-2006 by Texas Instruments
+ *
+ * The Inventra Controller Driver for Linux is free software; you
+ * can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 2 as published by the Free Software
+ * Foundation.
+ */
+
+#ifndef __MUSB_HDRDF_H__
+#define __MUSB_HDRDF_H__
+
+/*
+ * DaVinci-specific definitions
+ */
+
+/* Integrated highspeed/otg PHY */
+#define	USBPHY_CTL_PADDR	(DAVINCI_SYSTEM_MODULE_BASE + 0x34)
+#define	USBPHY_PHYCLKGD		(1 << 8)
+#define	USBPHY_SESNDEN		(1 << 7)	/* v(sess_end) comparator */
+#define	USBPHY_VBDTCTEN		(1 << 6)	/* v(bus) comparator */
+#define	USBPHY_PHYPLLON		(1 << 4)	/* override pll suspend */
+#define	USBPHY_CLKO1SEL		(1 << 3)
+#define	USBPHY_OSCPDWN		(1 << 2)
+#define	USBPHY_PHYPDWN		(1 << 0)
+
+/* For now include usb OTG module registers here */
+#define DAVINCI_USB_VERSION_REG		0x00
+#define DAVINCI_USB_CTRL_REG		0x04
+#define DAVINCI_USB_STAT_REG		0x08
+#define DAVINCI_RNDIS_REG		0x10
+#define DAVINCI_AUTOREQ_REG		0x14
+#define DAVINCI_USB_INT_SOURCE_REG	0x20
+#define DAVINCI_USB_INT_SET_REG		0x24
+#define DAVINCI_USB_INT_SRC_CLR_REG	0x28
+#define DAVINCI_USB_INT_MASK_REG	0x2c
+#define DAVINCI_USB_INT_MASK_SET_REG	0x30
+#define DAVINCI_USB_INT_MASK_CLR_REG	0x34
+#define DAVINCI_USB_INT_SRC_MASKED_REG	0x38
+#define DAVINCI_USB_EOI_REG		0x3c
+#define DAVINCI_USB_EOI_INTVEC		0x40
+
+/* BEGIN CPPI-generic (?) */
+
+/* CPPI related registers */
+#define DAVINCI_TXCPPI_CTRL_REG		0x80
+#define DAVINCI_TXCPPI_TEAR_REG		0x84
+#define DAVINCI_CPPI_EOI_REG		0x88
+#define DAVINCI_CPPI_INTVEC_REG		0x8c
+#define DAVINCI_TXCPPI_MASKED_REG	0x90
+#define DAVINCI_TXCPPI_RAW_REG		0x94
+#define DAVINCI_TXCPPI_INTENAB_REG	0x98
+#define DAVINCI_TXCPPI_INTCLR_REG	0x9c
+
+#define DAVINCI_RXCPPI_CTRL_REG		0xC0
+#define DAVINCI_RXCPPI_MASKED_REG	0xD0
+#define DAVINCI_RXCPPI_RAW_REG		0xD4
+#define DAVINCI_RXCPPI_INTENAB_REG	0xD8
+#define DAVINCI_RXCPPI_INTCLR_REG	0xDC
+
+#define DAVINCI_RXCPPI_BUFCNT0_REG	0xE0
+#define DAVINCI_RXCPPI_BUFCNT1_REG	0xE4
+#define DAVINCI_RXCPPI_BUFCNT2_REG	0xE8
+#define DAVINCI_RXCPPI_BUFCNT3_REG	0xEC
+
+/* CPPI state RAM entries */
+#define DAVINCI_CPPI_STATERAM_BASE_OFFSET   0x100
+
+#define DAVINCI_TXCPPI_STATERAM_OFFSET(chnum) \
+	(DAVINCI_CPPI_STATERAM_BASE_OFFSET +       ((chnum) * 0x40))
+#define DAVINCI_RXCPPI_STATERAM_OFFSET(chnum) \
+	(DAVINCI_CPPI_STATERAM_BASE_OFFSET + 0x20 + ((chnum) * 0x40))
+
+/* CPPI masks */
+#define DAVINCI_DMA_CTRL_ENABLE		1
+#define DAVINCI_DMA_CTRL_DISABLE	0
+
+#define DAVINCI_DMA_ALL_CHANNELS_ENABLE	0xF
+#define DAVINCI_DMA_ALL_CHANNELS_DISABLE 0xF
+
+/* END CPPI-generic (?) */
+
+#define DAVINCI_USB_TX_ENDPTS_MASK	0x1f		/* ep0 + 4 tx */
+#define DAVINCI_USB_RX_ENDPTS_MASK	0x1e		/* 4 rx */
+
+#define DAVINCI_USB_USBINT_SHIFT	16
+#define DAVINCI_USB_TXINT_SHIFT		0
+#define DAVINCI_USB_RXINT_SHIFT		8
+
+#define DAVINCI_INTR_DRVVBUS		0x0100
+
+#define DAVINCI_USB_USBINT_MASK		0x01ff0000	/* 8 Mentor, DRVVBUS */
+#define DAVINCI_USB_TXINT_MASK \
+	(DAVINCI_USB_TX_ENDPTS_MASK << DAVINCI_USB_TXINT_SHIFT)
+#define DAVINCI_USB_RXINT_MASK \
+	(DAVINCI_USB_RX_ENDPTS_MASK << DAVINCI_USB_RXINT_SHIFT)
+
+#define DAVINCI_BASE_OFFSET		0x400
+
+#endif	/* __MUSB_HDRDF_H__ */

drivers/usb/musb/musb_debug.h

+/*
+ * MUSB OTG driver debug defines
+ *
+ * Copyright 2005 Mentor Graphics Corporation
+ * Copyright (C) 2005-2006 by Texas Instruments
+ * Copyright (C) 2006-2007 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __MUSB_LINUX_DEBUG_H__
+#define __MUSB_LINUX_DEBUG_H__
+
+#define yprintk(facility, format, args...) \
+	do { printk(facility "%s %d: " format , \
+	__func__, __LINE__ , ## args); } while (0)
+#define WARNING(fmt, args...) yprintk(KERN_WARNING, fmt, ## args)
+#define INFO(fmt, args...) yprintk(KERN_INFO, fmt, ## args)
+#define ERR(fmt, args...) yprintk(KERN_ERR, fmt, ## args)
+
+#define xprintk(level, facility, format, args...) do { \
+	if (_dbg_level(level)) { \
+		printk(facility "%s %d: " format , \
+				__func__, __LINE__ , ## args); \
+	} } while (0)
+
+#if MUSB_DEBUG > 0
+extern unsigned debug;
+#else
+#define debug	0
+#endif
+
+static inline int _dbg_level(unsigned l)
+{
+	return debug >= l;
+}
+
+#define DBG(level, fmt, args...) xprintk(level, KERN_DEBUG, fmt, ## args)
+
+extern const char *otg_state_string(struct musb *);
+
+#endif				/*  __MUSB_LINUX_DEBUG_H__ */

drivers/usb/serial/Kconfig

@@ -499,9 +499,10 @@ config USB_SERIAL_SAFE_PADDED
 config USB_SERIAL_SIERRAWIRELESS
 	tristate "USB Sierra Wireless Driver"
 	help
-	  Say M here if you want to use a Sierra Wireless device (if
-	  using an PC 5220 or AC580 please use the Airprime driver
-	  instead).
+	  Say M here if you want to use Sierra Wireless devices.
+
+	  Many deviecs have a feature known as TRU-Install, for those devices
+	  to work properly the USB Storage Sierra feature must be enabled.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called sierra.

drivers/usb/storage/sierra_ms.h

+#ifndef _SIERRA_MS_H_
+#define _SIERRA_MS_H_
+extern int sierra_ms_init(struct us_data *us);
+#endif