drivers/usb/gadget/multi.c - android_kernel_htc_msm8960 - Gitiles

 /*
  * multi.c -- Multifunction Composite driver
  *
  * Copyright (C) 2008 David Brownell
  * Copyright (C) 2008 Nokia Corporation
  * Copyright (C) 2009 Samsung Electronics
  * Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */


 #include <linux/kernel.h>
 #include <linux/utsname.h>


 #if defined USB_ETH_RNDIS
 #  undef USB_ETH_RNDIS
 #endif
 #ifdef CONFIG_USB_ETH_RNDIS
 #  define USB_ETH_RNDIS y
 #endif


 #define DRIVER_DESC		"Multifunction Composite Gadget"
 #define DRIVER_VERSION		"2009/07/21"

 /*-------------------------------------------------------------------------*/

 #define MULTI_VENDOR_NUM	0x0525	/* XXX NetChip */
 #define MULTI_PRODUCT_NUM	0xa4ab	/* XXX */

 /*-------------------------------------------------------------------------*/

 /*
  * kbuild is not very cooperative with respect to linking separately
  * compiled library objects into one module.  So for now we won't use
  * separate compilation ... ensuring init/exit sections work to shrink
  * the runtime footprint, and giving us at least some parts of what
  * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
  */

 #include "composite.c"
 #include "usbstring.c"
 #include "config.c"
 #include "epautoconf.c"

 #include "u_serial.c"
 #include "f_acm.c"

 #include "f_ecm.c"
 #include "f_subset.c"
 #ifdef USB_ETH_RNDIS
 #  include "f_rndis.c"
 #  include "rndis.c"
 #endif
 #include "u_ether.c"

 #undef DBG     /* u_ether.c has broken idea about macros */
 #undef VDBG    /* so clean up after it */
 #undef ERROR
 #undef INFO
 #include "f_mass_storage.c"

 /*-------------------------------------------------------------------------*/

 static struct usb_device_descriptor device_desc = {
 	.bLength =		sizeof device_desc,
 	.bDescriptorType =	USB_DT_DEVICE,

 	.bcdUSB =		cpu_to_le16(0x0200),

 	/* .bDeviceClass =		USB_CLASS_COMM, */
 	/* .bDeviceSubClass =	0, */
 	/* .bDeviceProtocol =	0, */
 	.bDeviceClass =		0xEF,
 	.bDeviceSubClass =	2,
 	.bDeviceProtocol =	1,
 	/* .bMaxPacketSize0 = f(hardware) */

 	/* Vendor and product id can be overridden by module parameters.  */
 	.idVendor =		cpu_to_le16(MULTI_VENDOR_NUM),
 	.idProduct =		cpu_to_le16(MULTI_PRODUCT_NUM),
 	/* .bcdDevice = f(hardware) */
 	/* .iManufacturer = DYNAMIC */
 	/* .iProduct = DYNAMIC */
 	/* NO SERIAL NUMBER */
 	.bNumConfigurations =	1,
 };

 static struct usb_otg_descriptor otg_descriptor = {
 	.bLength =		sizeof otg_descriptor,
 	.bDescriptorType =	USB_DT_OTG,

 	/* REVISIT SRP-only hardware is possible, although
 	 * it would not be called "OTG" ...
 	 */
 	.bmAttributes =		USB_OTG_SRP | USB_OTG_HNP,
 };

 static const struct usb_descriptor_header *otg_desc[] = {
 	(struct usb_descriptor_header *) &otg_descriptor,
 	NULL,
 };


 /* string IDs are assigned dynamically */

 #define STRING_MANUFACTURER_IDX		0
 #define STRING_PRODUCT_IDX		1

 static char manufacturer[50];

 static struct usb_string strings_dev[] = {
 	[STRING_MANUFACTURER_IDX].s = manufacturer,
 	[STRING_PRODUCT_IDX].s = DRIVER_DESC,
 	{  } /* end of list */
 };

 static struct usb_gadget_strings stringtab_dev = {
 	.language	= 0x0409,	/* en-us */
 	.strings	= strings_dev,
 };

 static struct usb_gadget_strings *dev_strings[] = {
 	&stringtab_dev,
 	NULL,
 };

 static u8 hostaddr[ETH_ALEN];


 /****************************** Configurations ******************************/

 static struct fsg_module_parameters mod_data = {
 	.stall = 1
 };
 FSG_MODULE_PARAMETERS(/* no prefix */, mod_data);

 static struct fsg_common *fsg_common;


 #ifdef USB_ETH_RNDIS

 static int __init rndis_do_config(struct usb_configuration *c)
 {
 	int ret;

 	if (gadget_is_otg(c->cdev->gadget)) {
 		c->descriptors = otg_desc;
 		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}

 	ret = rndis_bind_config(c, hostaddr);
 	if (ret < 0)
 		return ret;

 	ret = acm_bind_config(c, 0);
 	if (ret < 0)
 		return ret;

 	ret = fsg_add(c->cdev, c, fsg_common);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct usb_configuration rndis_config_driver = {
 	.label			= "Multifunction Composite (RNDIS + MS + ACM)",
 	.bind			= rndis_do_config,
 	.bConfigurationValue	= 2,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };

 #endif

 #ifdef CONFIG_USB_G_MULTI_CDC

 static int __init cdc_do_config(struct usb_configuration *c)
 {
 	int ret;

 	if (gadget_is_otg(c->cdev->gadget)) {
 		c->descriptors = otg_desc;
 		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}

 	ret = ecm_bind_config(c, hostaddr);
 	if (ret < 0)
 		return ret;

 	ret = acm_bind_config(c, 0);
 	if (ret < 0)
 		return ret;

 	ret = fsg_add(c->cdev, c, fsg_common);
 	if (ret < 0)
 		return ret;
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct usb_configuration cdc_config_driver = {
 	.label			= "Multifunction Composite (CDC + MS + ACM)",
 	.bind			= cdc_do_config,
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
 };

 #endif


 /****************************** Gadget Bind ******************************/


 static int __init multi_bind(struct usb_composite_dev *cdev)
 {
 	struct usb_gadget *gadget = cdev->gadget;
 	int status, gcnum;

 	if (!can_support_ecm(cdev->gadget)) {
 		dev_err(&gadget->dev, "controller '%s' not usable\n",
 		        gadget->name);
 		return -EINVAL;
 	}

 	/* set up network link layer */
 	status = gether_setup(cdev->gadget, hostaddr);
 	if (status < 0)
 		return status;

 	/* set up serial link layer */
 	status = gserial_setup(cdev->gadget, 1);
 	if (status < 0)
 		goto fail0;

 	/* set up mass storage function */
 	fsg_common = fsg_common_from_params(0, cdev, &mod_data);
 	if (IS_ERR(fsg_common)) {
 		status = PTR_ERR(fsg_common);
 		goto fail1;
 	}


 	gcnum = usb_gadget_controller_number(gadget);
 	if (gcnum >= 0)
 		device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum);
 	else {
 		/* We assume that can_support_ecm() tells the truth;
 		 * but if the controller isn't recognized at all then
 		 * that assumption is a bit more likely to be wrong.
 		 */
 		WARNING(cdev, "controller '%s' not recognized\n",
 		        gadget->name);
 		device_desc.bcdDevice = cpu_to_le16(0x0300 | 0x0099);
 	}


 	/* Allocate string descriptor numbers ... note that string
 	 * contents can be overridden by the composite_dev glue.
 	 */

 	/* device descriptor strings: manufacturer, product */
 	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
 	         init_utsname()->sysname, init_utsname()->release,
 	         gadget->name);
 	status = usb_string_id(cdev);
 	if (status < 0)
 		goto fail2;
 	strings_dev[STRING_MANUFACTURER_IDX].id = status;
 	device_desc.iManufacturer = status;

 	status = usb_string_id(cdev);
 	if (status < 0)
 		goto fail2;
 	strings_dev[STRING_PRODUCT_IDX].id = status;
 	device_desc.iProduct = status;

 #ifdef USB_ETH_RNDIS
 	/* register our first configuration */
 	status = usb_add_config(cdev, &rndis_config_driver);
 	if (status < 0)
 		goto fail2;
 #endif

 #ifdef CONFIG_USB_G_MULTI_CDC
 	/* register our second configuration */
 	status = usb_add_config(cdev, &cdc_config_driver);
 	if (status < 0)
 		goto fail2;
 #endif

 	dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
 	fsg_common_put(fsg_common);
 	return 0;

 fail2:
 	fsg_common_put(fsg_common);
 fail1:
 	gserial_cleanup();
 fail0:
 	gether_cleanup();
 	return status;
 }

 static int __exit multi_unbind(struct usb_composite_dev *cdev)
 {
 	gserial_cleanup();
 	gether_cleanup();
 	return 0;
 }


 /****************************** Some noise ******************************/


 static struct usb_composite_driver multi_driver = {
 	.name		= "g_multi",
 	.dev		= &device_desc,
 	.strings	= dev_strings,
 	.bind		= multi_bind,
 	.unbind		= __exit_p(multi_unbind),
 };

 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR("Michal Nazarewicz");
 MODULE_LICENSE("GPL");

 static int __init g_multi_init(void)
 {
 	return usb_composite_register(&multi_driver);
 }
 module_init(g_multi_init);

 static void __exit g_multi_cleanup(void)
 {
 	usb_composite_unregister(&multi_driver);
 }
 module_exit(g_multi_cleanup);
	/*
	* multi.c -- Multifunction Composite driver
	*
	* Copyright (C) 2008 David Brownell
	* Copyright (C) 2008 Nokia Corporation
	* Copyright (C) 2009 Samsung Electronics
	* Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/


	#include <linux/kernel.h>
	#include <linux/utsname.h>


	#if defined USB_ETH_RNDIS
	# undef USB_ETH_RNDIS
	#endif
	#ifdef CONFIG_USB_ETH_RNDIS
	# define USB_ETH_RNDIS y
	#endif


	#define DRIVER_DESC "Multifunction Composite Gadget"
	#define DRIVER_VERSION "2009/07/21"

	/-------------------------------------------------------------------------/

	#define MULTI_VENDOR_NUM 0x0525 /* XXX NetChip */
	#define MULTI_PRODUCT_NUM 0xa4ab /* XXX */

	/-------------------------------------------------------------------------/

	/*
	* kbuild is not very cooperative with respect to linking separately
	* compiled library objects into one module. So for now we won't use
	* separate compilation ... ensuring init/exit sections work to shrink
	* the runtime footprint, and giving us at least some parts of what
	* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
	*/

	#include "composite.c"
	#include "usbstring.c"
	#include "config.c"
	#include "epautoconf.c"

	#include "u_serial.c"
	#include "f_acm.c"

	#include "f_ecm.c"
	#include "f_subset.c"
	#ifdef USB_ETH_RNDIS
	# include "f_rndis.c"
	# include "rndis.c"
	#endif
	#include "u_ether.c"

	#undef DBG /* u_ether.c has broken idea about macros */
	#undef VDBG /* so clean up after it */
	#undef ERROR
	#undef INFO
	#include "f_mass_storage.c"

	/-------------------------------------------------------------------------/

	static struct usb_device_descriptor device_desc = {
	.bLength = sizeof device_desc,
	.bDescriptorType = USB_DT_DEVICE,

	.bcdUSB = cpu_to_le16(0x0200),

	/* .bDeviceClass = USB_CLASS_COMM, */
	/* .bDeviceSubClass = 0, */
	/* .bDeviceProtocol = 0, */
	.bDeviceClass = 0xEF,
	.bDeviceSubClass = 2,
	.bDeviceProtocol = 1,
	/* .bMaxPacketSize0 = f(hardware) */

	/* Vendor and product id can be overridden by module parameters. */
	.idVendor = cpu_to_le16(MULTI_VENDOR_NUM),
	.idProduct = cpu_to_le16(MULTI_PRODUCT_NUM),
	/* .bcdDevice = f(hardware) */
	/* .iManufacturer = DYNAMIC */
	/* .iProduct = DYNAMIC */
	/* NO SERIAL NUMBER */
	.bNumConfigurations = 1,
	};

	static struct usb_otg_descriptor otg_descriptor = {
	.bLength = sizeof otg_descriptor,
	.bDescriptorType = USB_DT_OTG,

	/* REVISIT SRP-only hardware is possible, although
	* it would not be called "OTG" ...
	*/
	.bmAttributes = USB_OTG_SRP \| USB_OTG_HNP,
	};

	static const struct usb_descriptor_header *otg_desc[] = {
	(struct usb_descriptor_header *) &otg_descriptor,
	NULL,
	};


	/* string IDs are assigned dynamically */

	#define STRING_MANUFACTURER_IDX 0
	#define STRING_PRODUCT_IDX 1

	static char manufacturer[50];

	static struct usb_string strings_dev[] = {
	[STRING_MANUFACTURER_IDX].s = manufacturer,
	[STRING_PRODUCT_IDX].s = DRIVER_DESC,
	{ } /* end of list */
	};

	static struct usb_gadget_strings stringtab_dev = {
	.language = 0x0409, /* en-us */
	.strings = strings_dev,
	};

	static struct usb_gadget_strings *dev_strings[] = {
	&stringtab_dev,
	NULL,
	};

	static u8 hostaddr[ETH_ALEN];



	/**************************** Configurations ****************************/

	static struct fsg_module_parameters mod_data = {
	.stall = 1
	};
	FSG_MODULE_PARAMETERS(/* no prefix */, mod_data);

	static struct fsg_common *fsg_common;


	#ifdef USB_ETH_RNDIS

	static int __init rndis_do_config(struct usb_configuration *c)
	{
	int ret;

	if (gadget_is_otg(c->cdev->gadget)) {
	c->descriptors = otg_desc;
	c->bmAttributes \|= USB_CONFIG_ATT_WAKEUP;
	}

	ret = rndis_bind_config(c, hostaddr);
	if (ret < 0)
	return ret;

	ret = acm_bind_config(c, 0);
	if (ret < 0)
	return ret;

	ret = fsg_add(c->cdev, c, fsg_common);
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct usb_configuration rndis_config_driver = {
	.label = "Multifunction Composite (RNDIS + MS + ACM)",
	.bind = rndis_do_config,
	.bConfigurationValue = 2,
	/* .iConfiguration = DYNAMIC */
	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
	};

	#endif

	#ifdef CONFIG_USB_G_MULTI_CDC

	static int __init cdc_do_config(struct usb_configuration *c)
	{
	int ret;

	if (gadget_is_otg(c->cdev->gadget)) {
	c->descriptors = otg_desc;
	c->bmAttributes \|= USB_CONFIG_ATT_WAKEUP;
	}

	ret = ecm_bind_config(c, hostaddr);
	if (ret < 0)
	return ret;

	ret = acm_bind_config(c, 0);
	if (ret < 0)
	return ret;

	ret = fsg_add(c->cdev, c, fsg_common);
	if (ret < 0)
	return ret;
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct usb_configuration cdc_config_driver = {
	.label = "Multifunction Composite (CDC + MS + ACM)",
	.bind = cdc_do_config,
	.bConfigurationValue = 1,
	/* .iConfiguration = DYNAMIC */
	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
	};

	#endif



	/**************************** Gadget Bind ****************************/


	static int __init multi_bind(struct usb_composite_dev *cdev)
	{
	struct usb_gadget *gadget = cdev->gadget;
	int status, gcnum;

	if (!can_support_ecm(cdev->gadget)) {
	dev_err(&gadget->dev, "controller '%s' not usable\n",
	gadget->name);
	return -EINVAL;
	}

	/* set up network link layer */
	status = gether_setup(cdev->gadget, hostaddr);
	if (status < 0)
	return status;

	/* set up serial link layer */
	status = gserial_setup(cdev->gadget, 1);
	if (status < 0)
	goto fail0;

	/* set up mass storage function */
	fsg_common = fsg_common_from_params(0, cdev, &mod_data);
	if (IS_ERR(fsg_common)) {
	status = PTR_ERR(fsg_common);
	goto fail1;
	}


	gcnum = usb_gadget_controller_number(gadget);
	if (gcnum >= 0)
	device_desc.bcdDevice = cpu_to_le16(0x0300 \| gcnum);
	else {
	/* We assume that can_support_ecm() tells the truth;
	* but if the controller isn't recognized at all then
	* that assumption is a bit more likely to be wrong.
	*/
	WARNING(cdev, "controller '%s' not recognized\n",
	gadget->name);
	device_desc.bcdDevice = cpu_to_le16(0x0300 \| 0x0099);
	}


	/* Allocate string descriptor numbers ... note that string
	* contents can be overridden by the composite_dev glue.
	*/

	/* device descriptor strings: manufacturer, product */
	snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
	init_utsname()->sysname, init_utsname()->release,
	gadget->name);
	status = usb_string_id(cdev);
	if (status < 0)
	goto fail2;
	strings_dev[STRING_MANUFACTURER_IDX].id = status;
	device_desc.iManufacturer = status;

	status = usb_string_id(cdev);
	if (status < 0)
	goto fail2;
	strings_dev[STRING_PRODUCT_IDX].id = status;
	device_desc.iProduct = status;

	#ifdef USB_ETH_RNDIS
	/* register our first configuration */
	status = usb_add_config(cdev, &rndis_config_driver);
	if (status < 0)
	goto fail2;
	#endif

	#ifdef CONFIG_USB_G_MULTI_CDC
	/* register our second configuration */
	status = usb_add_config(cdev, &cdc_config_driver);
	if (status < 0)
	goto fail2;
	#endif

	dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
	fsg_common_put(fsg_common);
	return 0;

	fail2:
	fsg_common_put(fsg_common);
	fail1:
	gserial_cleanup();
	fail0:
	gether_cleanup();
	return status;
	}

	static int __exit multi_unbind(struct usb_composite_dev *cdev)
	{
	gserial_cleanup();
	gether_cleanup();
	return 0;
	}


	/**************************** Some noise ****************************/


	static struct usb_composite_driver multi_driver = {
	.name = "g_multi",
	.dev = &device_desc,
	.strings = dev_strings,
	.bind = multi_bind,
	.unbind = __exit_p(multi_unbind),
	};

	MODULE_DESCRIPTION(DRIVER_DESC);
	MODULE_AUTHOR("Michal Nazarewicz");
	MODULE_LICENSE("GPL");

	static int __init g_multi_init(void)
	{
	return usb_composite_register(&multi_driver);
	}
	module_init(g_multi_init);

	static void __exit g_multi_cleanup(void)
	{
	usb_composite_unregister(&multi_driver);
	}
	module_exit(g_multi_cleanup);