usb: Add driver/usb/core/(port.c,hub.h) files

This patch is to create driver/usb/core/(port.c,hub.h) files and move usb
port related code into port.c.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/core/Makefile

@@ -7,6 +7,7 @@ ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG
 usbcore-y := usb.o hub.o hcd.o urb.o message.o driver.o
 usbcore-y += config.o file.o buffer.o sysfs.o endpoint.o
 usbcore-y += devio.o notify.o generic.o quirks.o devices.o
+usbcore-y += port.o
 
 usbcore-$(CONFIG_PCI)		+= hcd-pci.o
 usbcore-$(CONFIG_ACPI)		+= usb-acpi.o

drivers/usb/core/hub.c

@@ -30,7 +30,7 @@
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
 
-#include "usb.h"
+#include "hub.h"
 
 /* if we are in debug mode, always announce new devices */
 #ifdef DEBUG
@@ -42,62 +42,6 @@
 #define USB_VENDOR_GENESYS_LOGIC		0x05e3
 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND	0x01
 
-struct usb_port {
-	struct usb_device *child;
-	struct device dev;
-	struct dev_state *port_owner;
-	enum usb_port_connect_type connect_type;
-};
-
-struct usb_hub {
-	struct device		*intfdev;	/* the "interface" device */
-	struct usb_device	*hdev;
-	struct kref		kref;
-	struct urb		*urb;		/* for interrupt polling pipe */
-
-	/* buffer for urb ... with extra space in case of babble */
-	char			(*buffer)[8];
-	union {
-		struct usb_hub_status	hub;
-		struct usb_port_status	port;
-	}			*status;	/* buffer for status reports */
-	struct mutex		status_mutex;	/* for the status buffer */
-
-	int			error;		/* last reported error */
-	int			nerrors;	/* track consecutive errors */
-
-	struct list_head	event_list;	/* hubs w/data or errs ready */
-	unsigned long		event_bits[1];	/* status change bitmask */
-	unsigned long		change_bits[1];	/* ports with logical connect
-							status change */
-	unsigned long		busy_bits[1];	/* ports being reset or
-							resumed */
-	unsigned long		removed_bits[1]; /* ports with a "removed"
-							device present */
-	unsigned long		wakeup_bits[1];	/* ports that have signaled
-							remote wakeup */
-#if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */
-#error event_bits[] is too short!
-#endif
-
-	struct usb_hub_descriptor *descriptor;	/* class descriptor */
-	struct usb_tt		tt;		/* Transaction Translator */
-
-	unsigned		mA_per_port;	/* current for each child */
-
-	unsigned		limited_power:1;
-	unsigned		quiescing:1;
-	unsigned		disconnected:1;
-
-	unsigned		quirk_check_port_auto_suspend:1;
-
-	unsigned		has_indicators:1;
-	u8			indicator[USB_MAXCHILDREN];
-	struct delayed_work	leds;
-	struct delayed_work	init_work;
-	struct usb_port		**ports;
-};
-
 static inline int hub_is_superspeed(struct usb_device *hdev)
 {
 	return (hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS);
@@ -168,9 +112,6 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
 #define HUB_DEBOUNCE_STEP	  25
 #define HUB_DEBOUNCE_STABLE	 100
 
-#define to_usb_port(_dev) \
-	container_of(_dev, struct usb_port, dev)
-
 static int usb_reset_and_verify_device(struct usb_device *udev);
 
 static inline char *portspeed(struct usb_hub *hub, int portstatus)
@@ -1294,52 +1235,6 @@ static int hub_post_reset(struct usb_interface *intf)
 	return 0;
 }
 
-static void usb_port_device_release(struct device *dev)
-{
-	struct usb_port *port_dev = to_usb_port(dev);
-
-	kfree(port_dev);
-}
-
-static void usb_hub_remove_port_device(struct usb_hub *hub,
-				       int port1)
-{
-	device_unregister(&hub->ports[port1 - 1]->dev);
-}
-
-struct device_type usb_port_device_type = {
-	.name =		"usb_port",
-	.release =	usb_port_device_release,
-};
-
-static int usb_hub_create_port_device(struct usb_hub *hub,
-				      int port1)
-{
-	struct usb_port *port_dev = NULL;
-	int retval;
-
-	port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL);
-	if (!port_dev) {
-		retval = -ENOMEM;
-		goto exit;
-	}
-
-	hub->ports[port1 - 1] = port_dev;
-	port_dev->dev.parent = hub->intfdev;
-	port_dev->dev.type = &usb_port_device_type;
-	dev_set_name(&port_dev->dev, "port%d", port1);
-
-	retval = device_register(&port_dev->dev);
-	if (retval)
-		goto error_register;
-	return 0;
-
-error_register:
-	put_device(&port_dev->dev);
-exit:
-	return retval;
-}
-
 static int hub_configure(struct usb_hub *hub,
 	struct usb_endpoint_descriptor *endpoint)
 {

drivers/usb/core/hub.h

@@ -0,0 +1,97 @@
+/*
+ * usb hub driver head file
+ *
+ * Copyright (C) 1999 Linus Torvalds
+ * Copyright (C) 1999 Johannes Erdfelt
+ * Copyright (C) 1999 Gregory P. Smith
+ * Copyright (C) 2001 Brad Hards (bhards@bigpond.net.au)
+ * Copyright (C) 2012 Intel Corp (tianyu.lan@intel.com)
+ *
+ *  move struct usb_hub to this file.
+ *
+ * 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.
+ */
+
+#include <linux/usb.h>
+#include <linux/usb/ch11.h>
+#include <linux/usb/hcd.h>
+#include "usb.h"
+
+struct usb_hub {
+	struct device		*intfdev;	/* the "interface" device */
+	struct usb_device	*hdev;
+	struct kref		kref;
+	struct urb		*urb;		/* for interrupt polling pipe */
+
+	/* buffer for urb ... with extra space in case of babble */
+	char			(*buffer)[8];
+	union {
+		struct usb_hub_status	hub;
+		struct usb_port_status	port;
+	}			*status;	/* buffer for status reports */
+	struct mutex		status_mutex;	/* for the status buffer */
+
+	int			error;		/* last reported error */
+	int			nerrors;	/* track consecutive errors */
+
+	struct list_head	event_list;	/* hubs w/data or errs ready */
+	unsigned long		event_bits[1];	/* status change bitmask */
+	unsigned long		change_bits[1];	/* ports with logical connect
+							status change */
+	unsigned long		busy_bits[1];	/* ports being reset or
+							resumed */
+	unsigned long		removed_bits[1]; /* ports with a "removed"
+							device present */
+	unsigned long		wakeup_bits[1];	/* ports that have signaled
+							remote wakeup */
+#if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */
+#error event_bits[] is too short!
+#endif
+
+	struct usb_hub_descriptor *descriptor;	/* class descriptor */
+	struct usb_tt		tt;		/* Transaction Translator */
+
+	unsigned		mA_per_port;	/* current for each child */
+
+	unsigned		limited_power:1;
+	unsigned		quiescing:1;
+	unsigned		disconnected:1;
+
+	unsigned		quirk_check_port_auto_suspend:1;
+
+	unsigned		has_indicators:1;
+	u8			indicator[USB_MAXCHILDREN];
+	struct delayed_work	leds;
+	struct delayed_work	init_work;
+	struct usb_port		**ports;
+};
+
+/**
+ * struct usb port - kernel's representation of a usb port
+ * @child: usb device attatched to the port
+ * @dev: generic device interface
+ * @port_owner: port's owner
+ * @connect_type: port's connect type
+ */
+struct usb_port {
+	struct usb_device *child;
+	struct device dev;
+	struct dev_state *port_owner;
+	enum usb_port_connect_type connect_type;
+};
+
+#define to_usb_port(_dev) \
+	container_of(_dev, struct usb_port, dev)
+
+extern int usb_hub_create_port_device(struct usb_hub *hub,
+		int port1);
+extern void usb_hub_remove_port_device(struct usb_hub *hub,
+		int port1);
+

drivers/usb/core/port.c

@@ -0,0 +1,66 @@
+/*
+ * usb port device code
+ *
+ * Copyright (C) 2012 Intel Corp
+ *
+ * Author: Lan Tianyu <tianyu.lan@intel.com>
+ *
+ * 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.
+ *
+ */
+
+#include "hub.h"
+
+static void usb_port_device_release(struct device *dev)
+{
+	struct usb_port *port_dev = to_usb_port(dev);
+
+	kfree(port_dev);
+}
+
+struct device_type usb_port_device_type = {
+	.name =		"usb_port",
+	.release =	usb_port_device_release,
+};
+
+int usb_hub_create_port_device(struct usb_hub *hub, int port1)
+{
+	struct usb_port *port_dev = NULL;
+	int retval;
+
+	port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL);
+	if (!port_dev) {
+		retval = -ENOMEM;
+		goto exit;
+	}
+
+	hub->ports[port1 - 1] = port_dev;
+	port_dev->dev.parent = hub->intfdev;
+	port_dev->dev.type = &usb_port_device_type;
+	dev_set_name(&port_dev->dev, "port%d", port1);
+
+	retval = device_register(&port_dev->dev);
+	if (retval)
+		goto error_register;
+
+	return 0;
+
+error_register:
+	put_device(&port_dev->dev);
+exit:
+	return retval;
+}
+
+void usb_hub_remove_port_device(struct usb_hub *hub,
+				       int port1)
+{
+	device_unregister(&hub->ports[port1 - 1]->dev);
+}
+