Merge branch 'xpad' into next

Bring in update to xpad driver improves support of Xbox One and wireless
controllers and fixes handling of concurrent requests to force feedback
and LEDs.

drivers/input/joystick/xpad.c

@@ -76,10 +76,13 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/rcupdate.h>
 #include <linux/slab.h>
 #include <linux/stat.h>
 #include <linux/module.h>
 #include <linux/usb/input.h>
+#include <linux/usb/quirks.h>
 
 #define DRIVER_AUTHOR "Marko Friedemann <mfr@bmx-chemnitz.de>"
 #define DRIVER_DESC "X-Box pad driver"
@@ -125,7 +128,7 @@ static const struct xpad_device {
 	{ 0x045e, 0x0289, "Microsoft X-Box pad v2 (US)", 0, XTYPE_XBOX },
 	{ 0x045e, 0x028e, "Microsoft X-Box 360 pad", 0, XTYPE_XBOX360 },
 	{ 0x045e, 0x02d1, "Microsoft X-Box One pad", 0, XTYPE_XBOXONE },
-	{ 0x045e, 0x02dd, "Microsoft X-Box One pad (Covert Forces)", 0, XTYPE_XBOXONE },
+	{ 0x045e, 0x02dd, "Microsoft X-Box One pad (Firmware 2015)", 0, XTYPE_XBOXONE },
 	{ 0x045e, 0x0291, "Xbox 360 Wireless Receiver (XBOX)", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360W },
 	{ 0x045e, 0x0719, "Xbox 360 Wireless Receiver", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360W },
 	{ 0x044f, 0x0f07, "Thrustmaster, Inc. Controller", 0, XTYPE_XBOX },
@@ -317,21 +320,42 @@ static struct usb_device_id xpad_table[] = {
 
 MODULE_DEVICE_TABLE(usb, xpad_table);
 
+struct xpad_output_packet {
+	u8 data[XPAD_PKT_LEN];
+	u8 len;
+	bool pending;
+};
+
+#define XPAD_OUT_CMD_IDX	0
+#define XPAD_OUT_FF_IDX		1
+#define XPAD_OUT_LED_IDX	(1 + IS_ENABLED(CONFIG_JOYSTICK_XPAD_FF))
+#define XPAD_NUM_OUT_PACKETS	(1 + \
+				 IS_ENABLED(CONFIG_JOYSTICK_XPAD_FF) + \
+				 IS_ENABLED(CONFIG_JOYSTICK_XPAD_LEDS))
+
 struct usb_xpad {
 	struct input_dev *dev;		/* input device interface */
+	struct input_dev __rcu *x360w_dev;
 	struct usb_device *udev;	/* usb device */
 	struct usb_interface *intf;	/* usb interface */
 
-	int pad_present;
+	bool pad_present;
+	bool input_created;
 
 	struct urb *irq_in;		/* urb for interrupt in report */
 	unsigned char *idata;		/* input data */
 	dma_addr_t idata_dma;
 
 	struct urb *irq_out;		/* urb for interrupt out report */
+	struct usb_anchor irq_out_anchor;
+	bool irq_out_active;		/* we must not use an active URB */
+	u8 odata_serial;		/* serial number for xbox one protocol */
 	unsigned char *odata;		/* output data */
 	dma_addr_t odata_dma;
-	struct mutex odata_mutex;
+	spinlock_t odata_lock;
+
+	struct xpad_output_packet out_packets[XPAD_NUM_OUT_PACKETS];
+	int last_out_packet;
 
 #if defined(CONFIG_JOYSTICK_XPAD_LEDS)
 	struct xpad_led *led;
@@ -343,8 +367,12 @@ struct usb_xpad {
 	int xtype;			/* type of xbox device */
 	int pad_nr;			/* the order x360 pads were attached */
 	const char *name;		/* name of the device */
+	struct work_struct work;	/* init/remove device from callback */
 };
 
+static int xpad_init_input(struct usb_xpad *xpad);
+static void xpad_deinit_input(struct usb_xpad *xpad);
+
 /*
  *	xpad_process_packet
  *
@@ -424,11 +452,9 @@ static void xpad_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *d
  *		http://www.free60.org/wiki/Gamepad
  */
 
-static void xpad360_process_packet(struct usb_xpad *xpad,
+static void xpad360_process_packet(struct usb_xpad *xpad, struct input_dev *dev,
 				   u16 cmd, unsigned char *data)
 {
-	struct input_dev *dev = xpad->dev;
-
 	/* digital pad */
 	if (xpad->mapping & MAP_DPAD_TO_BUTTONS) {
 		/* dpad as buttons (left, right, up, down) */
@@ -495,7 +521,30 @@ static void xpad360_process_packet(struct usb_xpad *xpad,
 	input_sync(dev);
 }
 
-static void xpad_identify_controller(struct usb_xpad *xpad);
+static void xpad_presence_work(struct work_struct *work)
+{
+	struct usb_xpad *xpad = container_of(work, struct usb_xpad, work);
+	int error;
+
+	if (xpad->pad_present) {
+		error = xpad_init_input(xpad);
+		if (error) {
+			/* complain only, not much else we can do here */
+			dev_err(&xpad->dev->dev,
+				"unable to init device: %d\n", error);
+		} else {
+			rcu_assign_pointer(xpad->x360w_dev, xpad->dev);
+		}
+	} else {
+		RCU_INIT_POINTER(xpad->x360w_dev, NULL);
+		synchronize_rcu();
+		/*
+		 * Now that we are sure xpad360w_process_packet is not
+		 * using input device we can get rid of it.
+		 */
+		xpad_deinit_input(xpad);
+	}
+}
 
 /*
  * xpad360w_process_packet
@@ -513,24 +562,28 @@ static void xpad_identify_controller(struct usb_xpad *xpad);
  */
 static void xpad360w_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data)
 {
+	struct input_dev *dev;
+	bool present;
+
 	/* Presence change */
 	if (data[0] & 0x08) {
-		if (data[1] & 0x80) {
-			xpad->pad_present = 1;
-			/*
-			 * Light up the segment corresponding to
-			 * controller number.
-			 */
-			xpad_identify_controller(xpad);
-		} else
-			xpad->pad_present = 0;
+		present = (data[1] & 0x80) != 0;
+
+		if (xpad->pad_present != present) {
+			xpad->pad_present = present;
+			schedule_work(&xpad->work);
+		}
 	}
 
 	/* Valid pad data */
-	if (!(data[1] & 0x1))
+	if (data[1] != 0x1)
 		return;
 
-	xpad360_process_packet(xpad, cmd, &data[4]);
+	rcu_read_lock();
+	dev = rcu_dereference(xpad->x360w_dev);
+	if (dev)
+		xpad360_process_packet(xpad, dev, cmd, &data[4]);
+	rcu_read_unlock();
 }
 
 /*
@@ -659,7 +712,7 @@ static void xpad_irq_in(struct urb *urb)
 
 	switch (xpad->xtype) {
 	case XTYPE_XBOX360:
-		xpad360_process_packet(xpad, 0, xpad->idata);
+		xpad360_process_packet(xpad, xpad->dev, 0, xpad->idata);
 		break;
 	case XTYPE_XBOX360W:
 		xpad360w_process_packet(xpad, 0, xpad->idata);
@@ -678,18 +731,73 @@ static void xpad_irq_in(struct urb *urb)
 			__func__, retval);
 }
 
+/* Callers must hold xpad->odata_lock spinlock */
+static bool xpad_prepare_next_out_packet(struct usb_xpad *xpad)
+{
+	struct xpad_output_packet *pkt, *packet = NULL;
+	int i;
+
+	for (i = 0; i < XPAD_NUM_OUT_PACKETS; i++) {
+		if (++xpad->last_out_packet >= XPAD_NUM_OUT_PACKETS)
+			xpad->last_out_packet = 0;
+
+		pkt = &xpad->out_packets[xpad->last_out_packet];
+		if (pkt->pending) {
+			dev_dbg(&xpad->intf->dev,
+				"%s - found pending output packet %d\n",
+				__func__, xpad->last_out_packet);
+			packet = pkt;
+			break;
+		}
+	}
+
+	if (packet) {
+		memcpy(xpad->odata, packet->data, packet->len);
+		xpad->irq_out->transfer_buffer_length = packet->len;
+		return true;
+	}
+
+	return false;
+}
+
+/* Callers must hold xpad->odata_lock spinlock */
+static int xpad_try_sending_next_out_packet(struct usb_xpad *xpad)
+{
+	int error;
+
+	if (!xpad->irq_out_active && xpad_prepare_next_out_packet(xpad)) {
+		usb_anchor_urb(xpad->irq_out, &xpad->irq_out_anchor);
+		error = usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
+		if (error) {
+			dev_err(&xpad->intf->dev,
+				"%s - usb_submit_urb failed with result %d\n",
+				__func__, error);
+			usb_unanchor_urb(xpad->irq_out);
+			return -EIO;
+		}
+
+		xpad->irq_out_active = true;
+	}
+
+	return 0;
+}
+
 static void xpad_irq_out(struct urb *urb)
 {
 	struct usb_xpad *xpad = urb->context;
 	struct device *dev = &xpad->intf->dev;
-	int retval, status;
+	int status = urb->status;
+	int error;
+	unsigned long flags;
 
-	status = urb->status;
+	spin_lock_irqsave(&xpad->odata_lock, flags);
 
 	switch (status) {
 	case 0:
 		/* success */
-		return;
+		xpad->out_packets[xpad->last_out_packet].pending = false;
+		xpad->irq_out_active = xpad_prepare_next_out_packet(xpad);
+		break;
 
 	case -ECONNRESET:
 	case -ENOENT:
@@ -697,19 +805,28 @@ static void xpad_irq_out(struct urb *urb)
 		/* this urb is terminated, clean up */
 		dev_dbg(dev, "%s - urb shutting down with status: %d\n",
 			__func__, status);
-		return;
+		xpad->irq_out_active = false;
+		break;
 
 	default:
 		dev_dbg(dev, "%s - nonzero urb status received: %d\n",
 			__func__, status);
-		goto exit;
+		break;
 	}
 
-exit:
-	retval = usb_submit_urb(urb, GFP_ATOMIC);
-	if (retval)
-		dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
-			__func__, retval);
+	if (xpad->irq_out_active) {
+		usb_anchor_urb(urb, &xpad->irq_out_anchor);
+		error = usb_submit_urb(urb, GFP_ATOMIC);
+		if (error) {
+			dev_err(dev,
+				"%s - usb_submit_urb failed with result %d\n",
+				__func__, error);
+			usb_unanchor_urb(urb);
+			xpad->irq_out_active = false;
+		}
+	}
+
+	spin_unlock_irqrestore(&xpad->odata_lock, flags);
 }
 
 static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad)
@@ -721,6 +838,8 @@ static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad)
 	if (xpad->xtype == XTYPE_UNKNOWN)
 		return 0;
 
+	init_usb_anchor(&xpad->irq_out_anchor);
+
 	xpad->odata = usb_alloc_coherent(xpad->udev, XPAD_PKT_LEN,
 					 GFP_KERNEL, &xpad->odata_dma);
 	if (!xpad->odata) {
@@ -728,7 +847,7 @@ static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad)
 		goto fail1;
 	}
 
-	mutex_init(&xpad->odata_mutex);
+	spin_lock_init(&xpad->odata_lock);
 
 	xpad->irq_out = usb_alloc_urb(0, GFP_KERNEL);
 	if (!xpad->irq_out) {
@@ -755,8 +874,14 @@ static int xpad_init_output(struct usb_interface *intf, struct usb_xpad *xpad)
 
 static void xpad_stop_output(struct usb_xpad *xpad)
 {
-	if (xpad->xtype != XTYPE_UNKNOWN)
-		usb_kill_urb(xpad->irq_out);
+	if (xpad->xtype != XTYPE_UNKNOWN) {
+		if (!usb_wait_anchor_empty_timeout(&xpad->irq_out_anchor,
+						   5000)) {
+			dev_warn(&xpad->intf->dev,
+				 "timed out waiting for output URB to complete, killing\n");
+			usb_kill_anchored_urbs(&xpad->irq_out_anchor);
+		}
+	}
 }
 
 static void xpad_deinit_output(struct usb_xpad *xpad)
@@ -770,27 +895,60 @@ static void xpad_deinit_output(struct usb_xpad *xpad)
 
 static int xpad_inquiry_pad_presence(struct usb_xpad *xpad)
 {
+	struct xpad_output_packet *packet =
+			&xpad->out_packets[XPAD_OUT_CMD_IDX];
+	unsigned long flags;
 	int retval;
 
-	mutex_lock(&xpad->odata_mutex);
+	spin_lock_irqsave(&xpad->odata_lock, flags);
+
+	packet->data[0] = 0x08;
+	packet->data[1] = 0x00;
+	packet->data[2] = 0x0F;
+	packet->data[3] = 0xC0;
+	packet->data[4] = 0x00;
+	packet->data[5] = 0x00;
+	packet->data[6] = 0x00;
+	packet->data[7] = 0x00;
+	packet->data[8] = 0x00;
+	packet->data[9] = 0x00;
+	packet->data[10] = 0x00;
+	packet->data[11] = 0x00;
+	packet->len = 12;
+	packet->pending = true;
+
+	/* Reset the sequence so we send out presence first */
+	xpad->last_out_packet = -1;
+	retval = xpad_try_sending_next_out_packet(xpad);
+
+	spin_unlock_irqrestore(&xpad->odata_lock, flags);
 
-	xpad->odata[0] = 0x08;
-	xpad->odata[1] = 0x00;
-	xpad->odata[2] = 0x0F;
-	xpad->odata[3] = 0xC0;
-	xpad->odata[4] = 0x00;
-	xpad->odata[5] = 0x00;
-	xpad->odata[6] = 0x00;
-	xpad->odata[7] = 0x00;
-	xpad->odata[8] = 0x00;
-	xpad->odata[9] = 0x00;
-	xpad->odata[10] = 0x00;
-	xpad->odata[11] = 0x00;
-	xpad->irq_out->transfer_buffer_length = 12;
+	return retval;
+}
+
+static int xpad_start_xbox_one(struct usb_xpad *xpad)
+{
+	struct xpad_output_packet *packet =
+			&xpad->out_packets[XPAD_OUT_CMD_IDX];
+	unsigned long flags;
+	int retval;
 
-	retval = usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+	spin_lock_irqsave(&xpad->odata_lock, flags);
 
-	mutex_unlock(&xpad->odata_mutex);
+	/* Xbox one controller needs to be initialized. */
+	packet->data[0] = 0x05;
+	packet->data[1] = 0x20;
+	packet->data[2] = xpad->odata_serial++; /* packet serial */
+	packet->data[3] = 0x01; /* rumble bit enable?  */
+	packet->data[4] = 0x00;
+	packet->len = 5;
+	packet->pending = true;
+
+	/* Reset the sequence so we send out start packet first */
+	xpad->last_out_packet = -1;
+	retval = xpad_try_sending_next_out_packet(xpad);
+
+	spin_unlock_irqrestore(&xpad->odata_lock, flags);
 
 	return retval;
 }
@@ -799,8 +957,11 @@ static int xpad_inquiry_pad_presence(struct usb_xpad *xpad)
 static int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect *effect)
 {
 	struct usb_xpad *xpad = input_get_drvdata(dev);
+	struct xpad_output_packet *packet = &xpad->out_packets[XPAD_OUT_FF_IDX];
 	__u16 strong;
 	__u16 weak;
+	int retval;
+	unsigned long flags;
 
 	if (effect->type != FF_RUMBLE)
 		return 0;
@@ -808,69 +969,81 @@ static int xpad_play_effect(struct input_dev *dev, void *data, struct ff_effect
 	strong = effect->u.rumble.strong_magnitude;
 	weak = effect->u.rumble.weak_magnitude;
 
+	spin_lock_irqsave(&xpad->odata_lock, flags);
+
 	switch (xpad->xtype) {
 	case XTYPE_XBOX:
-		xpad->odata[0] = 0x00;
-		xpad->odata[1] = 0x06;
-		xpad->odata[2] = 0x00;
-		xpad->odata[3] = strong / 256;	/* left actuator */
-		xpad->odata[4] = 0x00;
-		xpad->odata[5] = weak / 256;	/* right actuator */
-		xpad->irq_out->transfer_buffer_length = 6;
+		packet->data[0] = 0x00;
+		packet->data[1] = 0x06;
+		packet->data[2] = 0x00;
+		packet->data[3] = strong / 256;	/* left actuator */
+		packet->data[4] = 0x00;
+		packet->data[5] = weak / 256;	/* right actuator */
+		packet->len = 6;
+		packet->pending = true;
 		break;
 
 	case XTYPE_XBOX360:
-		xpad->odata[0] = 0x00;
-		xpad->odata[1] = 0x08;
-		xpad->odata[2] = 0x00;
-		xpad->odata[3] = strong / 256;  /* left actuator? */
-		xpad->odata[4] = weak / 256;	/* right actuator? */
-		xpad->odata[5] = 0x00;
-		xpad->odata[6] = 0x00;
-		xpad->odata[7] = 0x00;
-		xpad->irq_out->transfer_buffer_length = 8;
+		packet->data[0] = 0x00;
+		packet->data[1] = 0x08;
+		packet->data[2] = 0x00;
+		packet->data[3] = strong / 256;  /* left actuator? */
+		packet->data[4] = weak / 256;	/* right actuator? */
+		packet->data[5] = 0x00;
+		packet->data[6] = 0x00;
+		packet->data[7] = 0x00;
+		packet->len = 8;
+		packet->pending = true;
 		break;
 
 	case XTYPE_XBOX360W:
-		xpad->odata[0] = 0x00;
-		xpad->odata[1] = 0x01;
-		xpad->odata[2] = 0x0F;
-		xpad->odata[3] = 0xC0;
-		xpad->odata[4] = 0x00;
-		xpad->odata[5] = strong / 256;
-		xpad->odata[6] = weak / 256;
-		xpad->odata[7] = 0x00;
-		xpad->odata[8] = 0x00;
-		xpad->odata[9] = 0x00;
-		xpad->odata[10] = 0x00;
-		xpad->odata[11] = 0x00;
-		xpad->irq_out->transfer_buffer_length = 12;
+		packet->data[0] = 0x00;
+		packet->data[1] = 0x01;
+		packet->data[2] = 0x0F;
+		packet->data[3] = 0xC0;
+		packet->data[4] = 0x00;
+		packet->data[5] = strong / 256;
+		packet->data[6] = weak / 256;
+		packet->data[7] = 0x00;
+		packet->data[8] = 0x00;
+		packet->data[9] = 0x00;
+		packet->data[10] = 0x00;
+		packet->data[11] = 0x00;
+		packet->len = 12;
+		packet->pending = true;
 		break;
 
 	case XTYPE_XBOXONE:
-		xpad->odata[0] = 0x09; /* activate rumble */
-		xpad->odata[1] = 0x08;
-		xpad->odata[2] = 0x00;
-		xpad->odata[3] = 0x08; /* continuous effect */
-		xpad->odata[4] = 0x00; /* simple rumble mode */
-		xpad->odata[5] = 0x03; /* L and R actuator only */
-		xpad->odata[6] = 0x00; /* TODO: LT actuator */
-		xpad->odata[7] = 0x00; /* TODO: RT actuator */
-		xpad->odata[8] = strong / 256;	/* left actuator */
-		xpad->odata[9] = weak / 256;	/* right actuator */
-		xpad->odata[10] = 0x80;	/* length of pulse */
-		xpad->odata[11] = 0x00;	/* stop period of pulse */
-		xpad->irq_out->transfer_buffer_length = 12;
+		packet->data[0] = 0x09; /* activate rumble */
+		packet->data[1] = 0x08;
+		packet->data[2] = xpad->odata_serial++;
+		packet->data[3] = 0x08; /* continuous effect */
+		packet->data[4] = 0x00; /* simple rumble mode */
+		packet->data[5] = 0x03; /* L and R actuator only */
+		packet->data[6] = 0x00; /* TODO: LT actuator */
+		packet->data[7] = 0x00; /* TODO: RT actuator */
+		packet->data[8] = strong / 512;	/* left actuator */
+		packet->data[9] = weak / 512;	/* right actuator */
+		packet->data[10] = 0x80;	/* length of pulse */
+		packet->data[11] = 0x00;	/* stop period of pulse */
+		packet->data[12] = 0x00;
+		packet->len = 13;
+		packet->pending = true;
 		break;
 
 	default:
 		dev_dbg(&xpad->dev->dev,
 			"%s - rumble command sent to unsupported xpad type: %d\n",
 			__func__, xpad->xtype);
-		return -EINVAL;
+		retval = -EINVAL;
+		goto out;
 	}
 
-	return usb_submit_urb(xpad->irq_out, GFP_ATOMIC);
+	retval = xpad_try_sending_next_out_packet(xpad);
+
+out:
+	spin_unlock_irqrestore(&xpad->odata_lock, flags);
+	return retval;
 }
 
 static int xpad_init_ff(struct usb_xpad *xpad)
@@ -921,36 +1094,44 @@ struct xpad_led {
  */
 static void xpad_send_led_command(struct usb_xpad *xpad, int command)
 {
+	struct xpad_output_packet *packet =
+			&xpad->out_packets[XPAD_OUT_LED_IDX];
+	unsigned long flags;
+
 	command %= 16;
 
-	mutex_lock(&xpad->odata_mutex);
+	spin_lock_irqsave(&xpad->odata_lock, flags);
 
 	switch (xpad->xtype) {
 	case XTYPE_XBOX360:
-		xpad->odata[0] = 0x01;
-		xpad->odata[1] = 0x03;
-		xpad->odata[2] = command;
-		xpad->irq_out->transfer_buffer_length = 3;
+		packet->data[0] = 0x01;
+		packet->data[1] = 0x03;
+		packet->data[2] = command;
+		packet->len = 3;
+		packet->pending = true;
 		break;
+
 	case XTYPE_XBOX360W:
-		xpad->odata[0] = 0x00;
-		xpad->odata[1] = 0x00;
-		xpad->odata[2] = 0x08;
-		xpad->odata[3] = 0x40 + command;
-		xpad->odata[4] = 0x00;
-		xpad->odata[5] = 0x00;
-		xpad->odata[6] = 0x00;
-		xpad->odata[7] = 0x00;
-		xpad->odata[8] = 0x00;
-		xpad->odata[9] = 0x00;
-		xpad->odata[10] = 0x00;
-		xpad->odata[11] = 0x00;
-		xpad->irq_out->transfer_buffer_length = 12;
+		packet->data[0] = 0x00;
+		packet->data[1] = 0x00;
+		packet->data[2] = 0x08;
+		packet->data[3] = 0x40 + command;
+		packet->data[4] = 0x00;
+		packet->data[5] = 0x00;
+		packet->data[6] = 0x00;
+		packet->data[7] = 0x00;
+		packet->data[8] = 0x00;
+		packet->data[9] = 0x00;
+		packet->data[10] = 0x00;
+		packet->data[11] = 0x00;
+		packet->len = 12;
+		packet->pending = true;
 		break;
 	}
 
-	usb_submit_urb(xpad->irq_out, GFP_KERNEL);
-	mutex_unlock(&xpad->odata_mutex);
+	xpad_try_sending_next_out_packet(xpad);
+
+	spin_unlock_irqrestore(&xpad->odata_lock, flags);
 }
 
 /*
@@ -959,7 +1140,7 @@ static void xpad_send_led_command(struct usb_xpad *xpad, int command)
  */
 static void xpad_identify_controller(struct usb_xpad *xpad)
 {
-	xpad_send_led_command(xpad, (xpad->pad_nr % 4) + 2);
+	led_set_brightness(&xpad->led->led_cdev, (xpad->pad_nr % 4) + 2);
 }
 
 static void xpad_led_set(struct led_classdev *led_cdev,
@@ -1001,14 +1182,7 @@ static int xpad_led_probe(struct usb_xpad *xpad)
 	if (error)
 		goto err_free_id;
 
-	if (xpad->xtype == XTYPE_XBOX360) {
-		/*
-		 * Light up the segment corresponding to controller
-		 * number on wired devices. On wireless we'll do that
-		 * when they respond to "presence" packet.
-		 */
-		xpad_identify_controller(xpad);
-	}
+	xpad_identify_controller(xpad);
 
 	return 0;
 
@@ -1036,37 +1210,73 @@ static void xpad_led_disconnect(struct usb_xpad *xpad) { }
 static void xpad_identify_controller(struct usb_xpad *xpad) { }
 #endif
 
-static int xpad_open(struct input_dev *dev)
+static int xpad_start_input(struct usb_xpad *xpad)
 {
-	struct usb_xpad *xpad = input_get_drvdata(dev);
-
-	/* URB was submitted in probe */
-	if (xpad->xtype == XTYPE_XBOX360W)
-		return 0;
+	int error;
 
-	xpad->irq_in->dev = xpad->udev;
 	if (usb_submit_urb(xpad->irq_in, GFP_KERNEL))
 		return -EIO;
 
 	if (xpad->xtype == XTYPE_XBOXONE) {
-		/* Xbox one controller needs to be initialized. */
-		xpad->odata[0] = 0x05;
-		xpad->odata[1] = 0x20;
-		xpad->irq_out->transfer_buffer_length = 2;
-		return usb_submit_urb(xpad->irq_out, GFP_KERNEL);
+		error = xpad_start_xbox_one(xpad);
+		if (error) {
+			usb_kill_urb(xpad->irq_in);
+			return error;
+		}
 	}
 
 	return 0;
 }
 
-static void xpad_close(struct input_dev *dev)
+static void xpad_stop_input(struct usb_xpad *xpad)
 {
-	struct usb_xpad *xpad = input_get_drvdata(dev);
+	usb_kill_urb(xpad->irq_in);
+}
+
+static int xpad360w_start_input(struct usb_xpad *xpad)
+{
+	int error;
 
-	if (xpad->xtype != XTYPE_XBOX360W)
+	error = usb_submit_urb(xpad->irq_in, GFP_KERNEL);
+	if (error)
+		return -EIO;
+
+	/*
+	 * Send presence packet.
+	 * This will force the controller to resend connection packets.
+	 * This is useful in the case we activate the module after the
+	 * adapter has been plugged in, as it won't automatically
+	 * send us info about the controllers.
+	 */
+	error = xpad_inquiry_pad_presence(xpad);
+	if (error) {
 		usb_kill_urb(xpad->irq_in);
+		return error;
+	}
 
-	xpad_stop_output(xpad);
+	return 0;
+}
+
+static void xpad360w_stop_input(struct usb_xpad *xpad)
+{
+	usb_kill_urb(xpad->irq_in);
+
+	/* Make sure we are done with presence work if it was scheduled */
+	flush_work(&xpad->work);
+}
+
+static int xpad_open(struct input_dev *dev)
+{
+	struct usb_xpad *xpad = input_get_drvdata(dev);
+
+	return xpad_start_input(xpad);
+}
+
+static void xpad_close(struct input_dev *dev)
+{
+	struct usb_xpad *xpad = input_get_drvdata(dev);
+
+	xpad_stop_input(xpad);
 }
 
 static void xpad_set_up_abs(struct input_dev *input_dev, signed short abs)
@@ -1097,8 +1307,11 @@ static void xpad_set_up_abs(struct input_dev *input_dev, signed short abs)
 
 static void xpad_deinit_input(struct usb_xpad *xpad)
 {
-	xpad_led_disconnect(xpad);
-	input_unregister_device(xpad->dev);
+	if (xpad->input_created) {
+		xpad->input_created = false;
+		xpad_led_disconnect(xpad);
+		input_unregister_device(xpad->dev);
+	}
 }
 
 static int xpad_init_input(struct usb_xpad *xpad)
@@ -1118,8 +1331,10 @@ static int xpad_init_input(struct usb_xpad *xpad)
 
 	input_set_drvdata(input_dev, xpad);
 
-	input_dev->open = xpad_open;
-	input_dev->close = xpad_close;
+	if (xpad->xtype != XTYPE_XBOX360W) {
+		input_dev->open = xpad_open;
+		input_dev->close = xpad_close;
+	}
 
 	__set_bit(EV_KEY, input_dev->evbit);
 
@@ -1181,6 +1396,7 @@ static int xpad_init_input(struct usb_xpad *xpad)
 	if (error)
 		goto err_disconnect_led;
 
+	xpad->input_created = true;
 	return 0;
 
 err_disconnect_led:
@@ -1241,6 +1457,7 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
 	xpad->mapping = xpad_device[i].mapping;
 	xpad->xtype = xpad_device[i].xtype;
 	xpad->name = xpad_device[i].name;
+	INIT_WORK(&xpad->work, xpad_presence_work);
 
 	if (xpad->xtype == XTYPE_UNKNOWN) {
 		if (intf->cur_altsetting->desc.bInterfaceClass == USB_CLASS_VENDOR_SPEC) {
@@ -1277,10 +1494,6 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
 
 	usb_set_intfdata(intf, xpad);
 
-	error = xpad_init_input(xpad);
-	if (error)
-		goto err_deinit_output;
-
 	if (xpad->xtype == XTYPE_XBOX360W) {
 		/*
 		 * Submit the int URB immediately rather than waiting for open
@@ -1289,28 +1502,24 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
 		 * exactly the message that a controller has arrived that
 		 * we're waiting for.
 		 */
-		xpad->irq_in->dev = xpad->udev;
-		error = usb_submit_urb(xpad->irq_in, GFP_KERNEL);
+		error = xpad360w_start_input(xpad);
 		if (error)
-			goto err_deinit_input;
-
+			goto err_deinit_output;
 		/*
-		 * Send presence packet.
-		 * This will force the controller to resend connection packets.
-		 * This is useful in the case we activate the module after the
-		 * adapter has been plugged in, as it won't automatically
-		 * send us info about the controllers.
+		 * Wireless controllers require RESET_RESUME to work properly
+		 * after suspend. Ideally this quirk should be in usb core
+		 * quirk list, but we have too many vendors producing these
+		 * controllers and we'd need to maintain 2 identical lists
+		 * here in this driver and in usb core.
 		 */
-		error = xpad_inquiry_pad_presence(xpad);
+		udev->quirks |= USB_QUIRK_RESET_RESUME;
+	} else {
+		error = xpad_init_input(xpad);
 		if (error)
-			goto err_kill_in_urb;
+			goto err_deinit_output;
 	}
 	return 0;
 
-err_kill_in_urb:
-	usb_kill_urb(xpad->irq_in);
-err_deinit_input:
-	xpad_deinit_input(xpad);
 err_deinit_output:
 	xpad_deinit_output(xpad);
 err_free_in_urb:
@@ -1320,19 +1529,24 @@ static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id
 err_free_mem:
 	kfree(xpad);
 	return error;
-
 }
 
 static void xpad_disconnect(struct usb_interface *intf)
 {
-	struct usb_xpad *xpad = usb_get_intfdata (intf);
+	struct usb_xpad *xpad = usb_get_intfdata(intf);
+
+	if (xpad->xtype == XTYPE_XBOX360W)
+		xpad360w_stop_input(xpad);
 
 	xpad_deinit_input(xpad);
-	xpad_deinit_output(xpad);
 
-	if (xpad->xtype == XTYPE_XBOX360W) {
-		usb_kill_urb(xpad->irq_in);
-	}
+	/*
+	 * Now that both input device and LED device are gone we can
+	 * stop output URB.
+	 */
+	xpad_stop_output(xpad);
+
+	xpad_deinit_output(xpad);
 
 	usb_free_urb(xpad->irq_in);
 	usb_free_coherent(xpad->udev, XPAD_PKT_LEN,
@@ -1343,10 +1557,55 @@ static void xpad_disconnect(struct usb_interface *intf)
 	usb_set_intfdata(intf, NULL);
 }
 
+static int xpad_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct usb_xpad *xpad = usb_get_intfdata(intf);
+	struct input_dev *input = xpad->dev;
+
+	if (xpad->xtype == XTYPE_XBOX360W) {
+		/*
+		 * Wireless controllers always listen to input so
+		 * they are notified when controller shows up
+		 * or goes away.
+		 */
+		xpad360w_stop_input(xpad);
+	} else {
+		mutex_lock(&input->mutex);
+		if (input->users)
+			xpad_stop_input(xpad);
+		mutex_unlock(&input->mutex);
+	}
+
+	xpad_stop_output(xpad);
+
+	return 0;
+}
+
+static int xpad_resume(struct usb_interface *intf)
+{
+	struct usb_xpad *xpad = usb_get_intfdata(intf);
+	struct input_dev *input = xpad->dev;
+	int retval = 0;
+
+	if (xpad->xtype == XTYPE_XBOX360W) {
+		retval = xpad360w_start_input(xpad);
+	} else {
+		mutex_lock(&input->mutex);
+		if (input->users)
+			retval = xpad_start_input(xpad);
+		mutex_unlock(&input->mutex);
+	}
+
+	return retval;
+}
+
 static struct usb_driver xpad_driver = {
 	.name		= "xpad",
 	.probe		= xpad_probe,
 	.disconnect	= xpad_disconnect,
+	.suspend	= xpad_suspend,
+	.resume		= xpad_resume,
+	.reset_resume	= xpad_resume,
 	.id_table	= xpad_table,
 };