[linux-2.6-block.git] / drivers / usb / gadget / legacy / multi.c

/*
 * multi.c -- Multifunction Composite driver
 *
 * Copyright (C) 2008 David Brownell
 * Copyright (C) 2008 Nokia Corporation
 * Copyright (C) 2009 Samsung Electronics
 * Author: Michal Nazarewicz (mina86@mina86.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.
 */


#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>

#include "u_serial.h"
#if defined USB_ETH_RNDIS
#  undef USB_ETH_RNDIS
#endif
#ifdef CONFIG_USB_G_MULTI_RNDIS
#  define USB_ETH_RNDIS y
#endif


#define DRIVER_DESC		"Multifunction Composite Gadget"

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


#include "f_mass_storage.h"

#include "u_ecm.h"
#ifdef USB_ETH_RNDIS
#  include "u_rndis.h"
#  include "rndis.h"
#endif
#include "u_ether.h"

USB_GADGET_COMPOSITE_OPTIONS();

USB_ETHERNET_MODULE_PARAMETERS();

/***************************** Device Descriptor ****************************/

#define MULTI_VENDOR_NUM	0x1d6b	/* Linux Foundation */
#define MULTI_PRODUCT_NUM	0x0104	/* Multifunction Composite Gadget */


enum {
	__MULTI_NO_CONFIG,
#ifdef CONFIG_USB_G_MULTI_RNDIS
	MULTI_RNDIS_CONFIG_NUM,
#endif
#ifdef CONFIG_USB_G_MULTI_CDC
	MULTI_CDC_CONFIG_NUM,
#endif
};


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

	.bcdUSB =		cpu_to_le16(0x0200),

	.bDeviceClass =		USB_CLASS_MISC /* 0xEF */,
	.bDeviceSubClass =	2,
	.bDeviceProtocol =	1,

	/* Vendor and product id can be overridden by module parameters.  */
	.idVendor =		cpu_to_le16(MULTI_VENDOR_NUM),
	.idProduct =		cpu_to_le16(MULTI_PRODUCT_NUM),
};


static const struct usb_descriptor_header *otg_desc[] = {
	(struct usb_descriptor_header *) &(struct usb_otg_descriptor){
		.bLength =		sizeof(struct usb_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,
	},
	NULL,
};


enum {
	MULTI_STRING_RNDIS_CONFIG_IDX = USB_GADGET_FIRST_AVAIL_IDX,
	MULTI_STRING_CDC_CONFIG_IDX,
};

static struct usb_string strings_dev[] = {
	[USB_GADGET_MANUFACTURER_IDX].s = "",
	[USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
	[USB_GADGET_SERIAL_IDX].s = "",
	[MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS",
	[MULTI_STRING_CDC_CONFIG_IDX].s   = "Multifunction with CDC ECM",
	{  } /* end of list */
};

static struct usb_gadget_strings *dev_strings[] = {
	&(struct usb_gadget_strings){
		.language	= 0x0409,	/* en-us */
		.strings	= strings_dev,
	},
	NULL,
};


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

static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
#ifdef CONFIG_USB_GADGET_DEBUG_FILES

static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;

#else

/*
 * Number of buffers we will use.
 * 2 is usually enough for good buffering pipeline
 */
#define fsg_num_buffers	CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS

#endif /* CONFIG_USB_GADGET_DEBUG_FILES */

FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);

static struct usb_function_instance *fi_acm;
static struct usb_function_instance *fi_msg;

/********** RNDIS **********/

#ifdef USB_ETH_RNDIS
static struct usb_function_instance *fi_rndis;
static struct usb_function *f_acm_rndis;
static struct usb_function *f_rndis;
static struct usb_function *f_msg_rndis;

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

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

	f_rndis = usb_get_function(fi_rndis);
	if (IS_ERR(f_rndis))
		return PTR_ERR(f_rndis);

	ret = usb_add_function(c, f_rndis);
	if (ret < 0)
		goto err_func_rndis;

	f_acm_rndis = usb_get_function(fi_acm);
	if (IS_ERR(f_acm_rndis)) {
		ret = PTR_ERR(f_acm_rndis);
		goto err_func_acm;
	}

	ret = usb_add_function(c, f_acm_rndis);
	if (ret)
		goto err_conf;

	f_msg_rndis = usb_get_function(fi_msg);
	if (IS_ERR(f_msg_rndis)) {
		ret = PTR_ERR(f_msg_rndis);
		goto err_fsg;
	}

	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	ret = fsg_common_run_thread(fsg_opts->common);
	if (ret)
		goto err_run;

	ret = usb_add_function(c, f_msg_rndis);
	if (ret)
		goto err_run;

	return 0;
err_run:
	usb_put_function(f_msg_rndis);
err_fsg:
	usb_remove_function(c, f_acm_rndis);
err_conf:
	usb_put_function(f_acm_rndis);
err_func_acm:
	usb_remove_function(c, f_rndis);
err_func_rndis:
	usb_put_function(f_rndis);
	return ret;
}

static __ref int rndis_config_register(struct usb_composite_dev *cdev)
{
	static struct usb_configuration config = {
		.bConfigurationValue	= MULTI_RNDIS_CONFIG_NUM,
		.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
	};

	config.label          = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].s;
	config.iConfiguration = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].id;

	return usb_add_config(cdev, &config, rndis_do_config);
}

#else

static __ref int rndis_config_register(struct usb_composite_dev *cdev)
{
	return 0;
}

#endif


/********** CDC ECM **********/

#ifdef CONFIG_USB_G_MULTI_CDC
static struct usb_function_instance *fi_ecm;
static struct usb_function *f_acm_multi;
static struct usb_function *f_ecm;
static struct usb_function *f_msg_multi;

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

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

	f_ecm = usb_get_function(fi_ecm);
	if (IS_ERR(f_ecm))
		return PTR_ERR(f_ecm);

	ret = usb_add_function(c, f_ecm);
	if (ret < 0)
		goto err_func_ecm;

	/* implicit port_num is zero */
	f_acm_multi = usb_get_function(fi_acm);
	if (IS_ERR(f_acm_multi)) {
		ret = PTR_ERR(f_acm_multi);
		goto err_func_acm;
	}

	ret = usb_add_function(c, f_acm_multi);
	if (ret)
		goto err_conf;

	f_msg_multi = usb_get_function(fi_msg);
	if (IS_ERR(f_msg_multi)) {
		ret = PTR_ERR(f_msg_multi);
		goto err_fsg;
	}

	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	ret = fsg_common_run_thread(fsg_opts->common);
	if (ret)
		goto err_run;

	ret = usb_add_function(c, f_msg_multi);
	if (ret)
		goto err_run;

	return 0;
err_run:
	usb_put_function(f_msg_multi);
err_fsg:
	usb_remove_function(c, f_acm_multi);
err_conf:
	usb_put_function(f_acm_multi);
err_func_acm:
	usb_remove_function(c, f_ecm);
err_func_ecm:
	usb_put_function(f_ecm);
	return ret;
}

static __ref int cdc_config_register(struct usb_composite_dev *cdev)
{
	static struct usb_configuration config = {
		.bConfigurationValue	= MULTI_CDC_CONFIG_NUM,
		.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
	};

	config.label          = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].s;
	config.iConfiguration = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].id;

	return usb_add_config(cdev, &config, cdc_do_config);
}

#else

static __ref int cdc_config_register(struct usb_composite_dev *cdev)
{
	return 0;
}

#endif


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

static int __ref multi_bind(struct usb_composite_dev *cdev)
{
	struct usb_gadget *gadget = cdev->gadget;
#ifdef CONFIG_USB_G_MULTI_CDC
	struct f_ecm_opts *ecm_opts;
#endif
#ifdef USB_ETH_RNDIS
	struct f_rndis_opts *rndis_opts;
#endif
	struct fsg_opts *fsg_opts;
	struct fsg_config config;
	int status;

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

#ifdef CONFIG_USB_G_MULTI_CDC
	fi_ecm = usb_get_function_instance("ecm");
	if (IS_ERR(fi_ecm))
		return PTR_ERR(fi_ecm);

	ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst);

	gether_set_qmult(ecm_opts->net, qmult);
	if (!gether_set_host_addr(ecm_opts->net, host_addr))
		pr_info("using host ethernet address: %s", host_addr);
	if (!gether_set_dev_addr(ecm_opts->net, dev_addr))
		pr_info("using self ethernet address: %s", dev_addr);
#endif

#ifdef USB_ETH_RNDIS
	fi_rndis = usb_get_function_instance("rndis");
	if (IS_ERR(fi_rndis)) {
		status = PTR_ERR(fi_rndis);
		goto fail;
	}

	rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst);

	gether_set_qmult(rndis_opts->net, qmult);
	if (!gether_set_host_addr(rndis_opts->net, host_addr))
		pr_info("using host ethernet address: %s", host_addr);
	if (!gether_set_dev_addr(rndis_opts->net, dev_addr))
		pr_info("using self ethernet address: %s", dev_addr);
#endif

#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS)
	/*
	 * If both ecm and rndis are selected then:
	 *	1) rndis borrows the net interface from ecm
	 *	2) since the interface is shared it must not be bound
	 *	twice - in ecm's _and_ rndis' binds, so do it here.
	 */
	gether_set_gadget(ecm_opts->net, cdev->gadget);
	status = gether_register_netdev(ecm_opts->net);
	if (status)
		goto fail0;

	rndis_borrow_net(fi_rndis, ecm_opts->net);
	ecm_opts->bound = true;
#endif

	/* set up serial link layer */
	fi_acm = usb_get_function_instance("acm");
	if (IS_ERR(fi_acm)) {
		status = PTR_ERR(fi_acm);
		goto fail0;
	}

	/* set up mass storage function */
	fi_msg = usb_get_function_instance("mass_storage");
	if (IS_ERR(fi_msg)) {
		status = PTR_ERR(fi_msg);
		goto fail1;
	}
	fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
	fsg_opts = fsg_opts_from_func_inst(fi_msg);

	fsg_opts->no_configfs = true;
	status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers);
	if (status)
		goto fail2;

	status = fsg_common_set_nluns(fsg_opts->common, config.nluns);
	if (status)
		goto fail_set_nluns;

	status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
	if (status)
		goto fail_set_cdev;

	fsg_common_set_sysfs(fsg_opts->common, true);
	status = fsg_common_create_luns(fsg_opts->common, &config);
	if (status)
		goto fail_set_cdev;

	fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name,
				      config.product_name);

	/* allocate string IDs */
	status = usb_string_ids_tab(cdev, strings_dev);
	if (unlikely(status < 0))
		goto fail_string_ids;
	device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;

	/* register configurations */
	status = rndis_config_register(cdev);
	if (unlikely(status < 0))
		goto fail_string_ids;

	status = cdc_config_register(cdev);
	if (unlikely(status < 0))
		goto fail_string_ids;
	usb_composite_overwrite_options(cdev, &coverwrite);

	/* we're done */
	dev_info(&gadget->dev, DRIVER_DESC "\n");
	return 0;


	/* error recovery */
fail_string_ids:
	fsg_common_remove_luns(fsg_opts->common);
fail_set_cdev:
	fsg_common_free_luns(fsg_opts->common);
fail_set_nluns:
	fsg_common_free_buffers(fsg_opts->common);
fail2:
	usb_put_function_instance(fi_msg);
fail1:
	usb_put_function_instance(fi_acm);
fail0:
#ifdef USB_ETH_RNDIS
	usb_put_function_instance(fi_rndis);
fail:
#endif
#ifdef CONFIG_USB_G_MULTI_CDC
	usb_put_function_instance(fi_ecm);
#endif
	return status;
}

static int multi_unbind(struct usb_composite_dev *cdev)
{
#ifdef CONFIG_USB_G_MULTI_CDC
	usb_put_function(f_msg_multi);
#endif
#ifdef USB_ETH_RNDIS
	usb_put_function(f_msg_rndis);
#endif
	usb_put_function_instance(fi_msg);
#ifdef CONFIG_USB_G_MULTI_CDC
	usb_put_function(f_acm_multi);
#endif
#ifdef USB_ETH_RNDIS
	usb_put_function(f_acm_rndis);
#endif
	usb_put_function_instance(fi_acm);
#ifdef USB_ETH_RNDIS
	usb_put_function(f_rndis);
	usb_put_function_instance(fi_rndis);
#endif
#ifdef CONFIG_USB_G_MULTI_CDC
	usb_put_function(f_ecm);
	usb_put_function_instance(fi_ecm);
#endif
	return 0;
}


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


static struct usb_composite_driver multi_driver = {
	.name		= "g_multi",
	.dev		= &device_desc,
	.strings	= dev_strings,
	.max_speed	= USB_SPEED_HIGH,
	.bind		= multi_bind,
	.unbind		= multi_unbind,
	.needs_serial	= 1,
};

module_usb_composite_driver(multi_driver);
Commit	Line	Data
f176a5d8 MN	1	/*
	2	* multi.c -- Multifunction Composite driver
	3	*
	4	* Copyright (C) 2008 David Brownell
	5	* Copyright (C) 2008 Nokia Corporation
	6	* Copyright (C) 2009 Samsung Electronics
54b8360f	7	* Author: Michal Nazarewicz (mina86@mina86.com)
f176a5d8 MN	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
f176a5d8 MN	13	*/
	14
	15
	16	#include <linux/kernel.h>
279cc49a	17	#include <linux/module.h>
73889015	18	#include <linux/netdevice.h>
f176a5d8	19
59835ad7	20	#include "u_serial.h"
396cda90 MN	21	#if defined USB_ETH_RNDIS
	22	# undef USB_ETH_RNDIS
	23	#endif
dbe4a99d	24	#ifdef CONFIG_USB_G_MULTI_RNDIS
396cda90	25	# define USB_ETH_RNDIS y
f176a5d8 MN	26	#endif
	27
	28
	29	#define DRIVER_DESC "Multifunction Composite Gadget"
f176a5d8	30
279cc49a MN	31	MODULE_DESCRIPTION(DRIVER_DESC);
	32	MODULE_AUTHOR("Michal Nazarewicz");
	33	MODULE_LICENSE("GPL");
f176a5d8	34
f176a5d8	35
1bcce939	36	#include "f_mass_storage.h"
f176a5d8	37
73889015	38	#include "u_ecm.h"
396cda90	39	#ifdef USB_ETH_RNDIS
4d1a8f68	40	# include "u_rndis.h"
cbbd14a9	41	# include "rndis.h"
f176a5d8	42	#endif
f1a1823f	43	#include "u_ether.h"
f176a5d8	44
7d16e8d3	45	USB_GADGET_COMPOSITE_OPTIONS();
279cc49a	46
f1a1823f AP	47	USB_ETHERNET_MODULE_PARAMETERS();
f1a1823f AP	48
279cc49a MN	49	/*************************** Device Descriptor **************************/
279cc49a MN	50
1c6529e9 MN	51	#define MULTI_VENDOR_NUM 0x1d6b /* Linux Foundation */
1c6529e9 MN	52	#define MULTI_PRODUCT_NUM 0x0104 /* Multifunction Composite Gadget */
279cc49a MN	53
	54
	55	enum {
	56	__MULTI_NO_CONFIG,
	57	#ifdef CONFIG_USB_G_MULTI_RNDIS
	58	MULTI_RNDIS_CONFIG_NUM,
	59	#endif
	60	#ifdef CONFIG_USB_G_MULTI_CDC
	61	MULTI_CDC_CONFIG_NUM,
	62	#endif
	63	};
	64
f176a5d8 MN	65
	66	static struct usb_device_descriptor device_desc = {
	67	.bLength = sizeof device_desc,
	68	.bDescriptorType = USB_DT_DEVICE,
	69
	70	.bcdUSB = cpu_to_le16(0x0200),
	71
279cc49a	72	.bDeviceClass = USB_CLASS_MISC /* 0xEF */,
f176a5d8 MN	73	.bDeviceSubClass = 2,
f176a5d8 MN	74	.bDeviceProtocol = 1,
f176a5d8 MN	75
	76	/* Vendor and product id can be overridden by module parameters. */
	77	.idVendor = cpu_to_le16(MULTI_VENDOR_NUM),
	78	.idProduct = cpu_to_le16(MULTI_PRODUCT_NUM),
f176a5d8 MN	79	};
f176a5d8 MN	80
f176a5d8 MN	81
f176a5d8 MN	82	static const struct usb_descriptor_header *otg_desc[] = {
279cc49a MN	83	(struct usb_descriptor_header *) &(struct usb_otg_descriptor){
	84	.bLength = sizeof(struct usb_otg_descriptor),
	85	.bDescriptorType = USB_DT_OTG,
	86
	87	/*
	88	* REVISIT SRP-only hardware is possible, although
	89	* it would not be called "OTG" ...
	90	*/
	91	.bmAttributes = USB_OTG_SRP \| USB_OTG_HNP,
	92	},
f176a5d8 MN	93	NULL,
	94	};
	95
	96
279cc49a	97	enum {
276e2e4f	98	MULTI_STRING_RNDIS_CONFIG_IDX = USB_GADGET_FIRST_AVAIL_IDX,
279cc49a	99	MULTI_STRING_CDC_CONFIG_IDX,
279cc49a	100	};
f176a5d8	101
f176a5d8	102	static struct usb_string strings_dev[] = {
276e2e4f	103	[USB_GADGET_MANUFACTURER_IDX].s = "",
d33f74fc	104	[USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
276e2e4f	105	[USB_GADGET_SERIAL_IDX].s = "",
279cc49a	106	[MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS",
279cc49a	107	[MULTI_STRING_CDC_CONFIG_IDX].s = "Multifunction with CDC ECM",
f176a5d8 MN	108	{ } /* end of list */
	109	};
	110
f176a5d8	111	static struct usb_gadget_strings *dev_strings[] = {
279cc49a MN	112	&(struct usb_gadget_strings){
	113	.language = 0x0409, /* en-us */
	114	.strings = strings_dev,
	115	},
f176a5d8 MN	116	NULL,
	117	};
	118
f176a5d8 MN	119
	120
	121
	122	/**************************** Configurations ****************************/
	123
279cc49a	124	static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
6fdc5dd2 AP	125	#ifdef CONFIG_USB_GADGET_DEBUG_FILES
	126
	127	static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
	128
	129	#else
	130
	131	/*
	132	* Number of buffers we will use.
	133	* 2 is usually enough for good buffering pipeline
	134	*/
	135	#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
	136
0c8b1992	137	#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
6fdc5dd2	138
279cc49a MN	139	FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
279cc49a MN	140
59835ad7	141	static struct usb_function_instance *fi_acm;
1bcce939	142	static struct usb_function_instance *fi_msg;
f176a5d8	143
279cc49a	144	/******** RNDIS ********/
f176a5d8	145
396cda90	146	#ifdef USB_ETH_RNDIS
4d1a8f68	147	static struct usb_function_instance *fi_rndis;
59835ad7	148	static struct usb_function *f_acm_rndis;
4d1a8f68	149	static struct usb_function *f_rndis;
1bcce939	150	static struct usb_function *f_msg_rndis;
f176a5d8	151
c94e289f	152	static int rndis_do_config(struct usb_configuration *c)
f176a5d8	153	{
1bcce939	154	struct fsg_opts *fsg_opts;
f176a5d8 MN	155	int ret;
	156
	157	if (gadget_is_otg(c->cdev->gadget)) {
	158	c->descriptors = otg_desc;
	159	c->bmAttributes \|= USB_CONFIG_ATT_WAKEUP;
	160	}
	161
4d1a8f68 AP	162	f_rndis = usb_get_function(fi_rndis);
	163	if (IS_ERR(f_rndis))
	164	return PTR_ERR(f_rndis);
	165
	166	ret = usb_add_function(c, f_rndis);
f176a5d8	167	if (ret < 0)
4d1a8f68	168	goto err_func_rndis;
f176a5d8	169
59835ad7	170	f_acm_rndis = usb_get_function(fi_acm);
4d1a8f68 AP	171	if (IS_ERR(f_acm_rndis)) {
	172	ret = PTR_ERR(f_acm_rndis);
	173	goto err_func_acm;
	174	}
59835ad7 SAS	175
	176	ret = usb_add_function(c, f_acm_rndis);
	177	if (ret)
	178	goto err_conf;
f176a5d8	179
1bcce939 AP	180	f_msg_rndis = usb_get_function(fi_msg);
	181	if (IS_ERR(f_msg_rndis)) {
	182	ret = PTR_ERR(f_msg_rndis);
59835ad7	183	goto err_fsg;
1bcce939 AP	184	}
	185
	186	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	187	ret = fsg_common_run_thread(fsg_opts->common);
	188	if (ret)
	189	goto err_run;
	190
	191	ret = usb_add_function(c, f_msg_rndis);
	192	if (ret)
	193	goto err_run;
f176a5d8 MN	194
f176a5d8 MN	195	return 0;
1bcce939 AP	196	err_run:
1bcce939 AP	197	usb_put_function(f_msg_rndis);
59835ad7 SAS	198	err_fsg:
	199	usb_remove_function(c, f_acm_rndis);
	200	err_conf:
	201	usb_put_function(f_acm_rndis);
4d1a8f68 AP	202	err_func_acm:
	203	usb_remove_function(c, f_rndis);
	204	err_func_rndis:
	205	usb_put_function(f_rndis);
59835ad7	206	return ret;
f176a5d8 MN	207	}
f176a5d8 MN	208
780cc0f3	209	static __ref int rndis_config_register(struct usb_composite_dev *cdev)
279cc49a MN	210	{
279cc49a MN	211	static struct usb_configuration config = {
279cc49a MN	212	.bConfigurationValue = MULTI_RNDIS_CONFIG_NUM,
	213	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
	214	};
	215
	216	config.label = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].s;
	217	config.iConfiguration = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].id;
	218
c9bfff9c	219	return usb_add_config(cdev, &config, rndis_do_config);
279cc49a MN	220	}
	221
	222	#else
	223
780cc0f3	224	static __ref int rndis_config_register(struct usb_composite_dev *cdev)
279cc49a MN	225	{
	226	return 0;
	227	}
f176a5d8 MN	228
	229	#endif
	230
279cc49a MN	231
	232	/******** CDC ECM ********/
	233
f176a5d8	234	#ifdef CONFIG_USB_G_MULTI_CDC
73889015	235	static struct usb_function_instance *fi_ecm;
59835ad7	236	static struct usb_function *f_acm_multi;
73889015	237	static struct usb_function *f_ecm;
1bcce939	238	static struct usb_function *f_msg_multi;
f176a5d8	239
c94e289f	240	static int cdc_do_config(struct usb_configuration *c)
f176a5d8	241	{
1bcce939	242	struct fsg_opts *fsg_opts;
f176a5d8 MN	243	int ret;
	244
	245	if (gadget_is_otg(c->cdev->gadget)) {
	246	c->descriptors = otg_desc;
	247	c->bmAttributes \|= USB_CONFIG_ATT_WAKEUP;
	248	}
	249
73889015 AP	250	f_ecm = usb_get_function(fi_ecm);
	251	if (IS_ERR(f_ecm))
	252	return PTR_ERR(f_ecm);
	253
	254	ret = usb_add_function(c, f_ecm);
f176a5d8	255	if (ret < 0)
73889015	256	goto err_func_ecm;
f176a5d8	257
59835ad7 SAS	258	/* implicit port_num is zero */
59835ad7 SAS	259	f_acm_multi = usb_get_function(fi_acm);
73889015 AP	260	if (IS_ERR(f_acm_multi)) {
	261	ret = PTR_ERR(f_acm_multi);
	262	goto err_func_acm;
	263	}
59835ad7 SAS	264
	265	ret = usb_add_function(c, f_acm_multi);
	266	if (ret)
	267	goto err_conf;
f176a5d8	268
1bcce939 AP	269	f_msg_multi = usb_get_function(fi_msg);
	270	if (IS_ERR(f_msg_multi)) {
	271	ret = PTR_ERR(f_msg_multi);
59835ad7	272	goto err_fsg;
1bcce939 AP	273	}
	274
	275	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	276	ret = fsg_common_run_thread(fsg_opts->common);
	277	if (ret)
	278	goto err_run;
	279
	280	ret = usb_add_function(c, f_msg_multi);
	281	if (ret)
	282	goto err_run;
f176a5d8 MN	283
f176a5d8 MN	284	return 0;
1bcce939 AP	285	err_run:
1bcce939 AP	286	usb_put_function(f_msg_multi);
59835ad7 SAS	287	err_fsg:
	288	usb_remove_function(c, f_acm_multi);
	289	err_conf:
	290	usb_put_function(f_acm_multi);
73889015 AP	291	err_func_acm:
	292	usb_remove_function(c, f_ecm);
	293	err_func_ecm:
	294	usb_put_function(f_ecm);
59835ad7	295	return ret;
f176a5d8 MN	296	}
f176a5d8 MN	297
780cc0f3	298	static __ref int cdc_config_register(struct usb_composite_dev *cdev)
279cc49a MN	299	{
279cc49a MN	300	static struct usb_configuration config = {
279cc49a MN	301	.bConfigurationValue = MULTI_CDC_CONFIG_NUM,
	302	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
	303	};
	304
	305	config.label = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].s;
	306	config.iConfiguration = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].id;
	307
c9bfff9c	308	return usb_add_config(cdev, &config, cdc_do_config);
279cc49a MN	309	}
	310
	311	#else
	312
780cc0f3	313	static __ref int cdc_config_register(struct usb_composite_dev *cdev)
279cc49a MN	314	{
	315	return 0;
	316	}
f176a5d8 MN	317
	318	#endif
	319
	320
	321
	322	/**************************** Gadget Bind ****************************/
	323
279cc49a	324	static int __ref multi_bind(struct usb_composite_dev *cdev)
f176a5d8 MN	325	{
f176a5d8 MN	326	struct usb_gadget *gadget = cdev->gadget;
73889015 AP	327	#ifdef CONFIG_USB_G_MULTI_CDC
73889015 AP	328	struct f_ecm_opts *ecm_opts;
4d1a8f68 AP	329	#endif
	330	#ifdef USB_ETH_RNDIS
	331	struct f_rndis_opts *rndis_opts;
73889015	332	#endif
1bcce939 AP	333	struct fsg_opts *fsg_opts;
1bcce939 AP	334	struct fsg_config config;
ed9cbda6	335	int status;
f176a5d8 MN	336
	337	if (!can_support_ecm(cdev->gadget)) {
	338	dev_err(&gadget->dev, "controller '%s' not usable\n",
4d1a8f68	339	gadget->name);
f176a5d8 MN	340	return -EINVAL;
	341	}
	342
73889015 AP	343	#ifdef CONFIG_USB_G_MULTI_CDC
	344	fi_ecm = usb_get_function_instance("ecm");
	345	if (IS_ERR(fi_ecm))
	346	return PTR_ERR(fi_ecm);
	347
	348	ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst);
	349
	350	gether_set_qmult(ecm_opts->net, qmult);
	351	if (!gether_set_host_addr(ecm_opts->net, host_addr))
	352	pr_info("using host ethernet address: %s", host_addr);
	353	if (!gether_set_dev_addr(ecm_opts->net, dev_addr))
	354	pr_info("using self ethernet address: %s", dev_addr);
4d1a8f68	355	#endif
73889015	356
4d1a8f68 AP	357	#ifdef USB_ETH_RNDIS
	358	fi_rndis = usb_get_function_instance("rndis");
	359	if (IS_ERR(fi_rndis)) {
	360	status = PTR_ERR(fi_rndis);
	361	goto fail;
	362	}
73889015	363
4d1a8f68	364	rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst);
73889015	365
4d1a8f68 AP	366	gether_set_qmult(rndis_opts->net, qmult);
	367	if (!gether_set_host_addr(rndis_opts->net, host_addr))
	368	pr_info("using host ethernet address: %s", host_addr);
	369	if (!gether_set_dev_addr(rndis_opts->net, dev_addr))
	370	pr_info("using self ethernet address: %s", dev_addr);
73889015 AP	371	#endif
	372
	373	#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS)
4d1a8f68 AP	374	/*
	375	* If both ecm and rndis are selected then:
	376	* 1) rndis borrows the net interface from ecm
	377	* 2) since the interface is shared it must not be bound
	378	* twice - in ecm's _and_ rndis' binds, so do it here.
	379	*/
73889015 AP	380	gether_set_gadget(ecm_opts->net, cdev->gadget);
	381	status = gether_register_netdev(ecm_opts->net);
	382	if (status)
	383	goto fail0;
73889015	384
4d1a8f68 AP	385	rndis_borrow_net(fi_rndis, ecm_opts->net);
4d1a8f68 AP	386	ecm_opts->bound = true;
73889015	387	#endif
f176a5d8 MN	388
f176a5d8 MN	389	/* set up serial link layer */
59835ad7 SAS	390	fi_acm = usb_get_function_instance("acm");
	391	if (IS_ERR(fi_acm)) {
	392	status = PTR_ERR(fi_acm);
c4ed4ac1	393	goto fail0;
59835ad7 SAS	394	}
59835ad7 SAS	395
f176a5d8	396	/* set up mass storage function */
1bcce939 AP	397	fi_msg = usb_get_function_instance("mass_storage");
	398	if (IS_ERR(fi_msg)) {
	399	status = PTR_ERR(fi_msg);
	400	goto fail1;
f176a5d8	401	}
1bcce939 AP	402	fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
	403	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	404
	405	fsg_opts->no_configfs = true;
	406	status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers);
	407	if (status)
	408	goto fail2;
	409
	410	status = fsg_common_set_nluns(fsg_opts->common, config.nluns);
	411	if (status)
	412	goto fail_set_nluns;
	413
	414	status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
	415	if (status)
	416	goto fail_set_cdev;
	417
	418	fsg_common_set_sysfs(fsg_opts->common, true);
	419	status = fsg_common_create_luns(fsg_opts->common, &config);
	420	if (status)
	421	goto fail_set_cdev;
	422
	423	fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name,
	424	config.product_name);
f176a5d8	425
a99d8a45	426	/* allocate string IDs */
279cc49a MN	427	status = usb_string_ids_tab(cdev, strings_dev);
279cc49a MN	428	if (unlikely(status < 0))
1bcce939	429	goto fail_string_ids;
d33f74fc	430	device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
f176a5d8	431
279cc49a MN	432	/* register configurations */
	433	status = rndis_config_register(cdev);
	434	if (unlikely(status < 0))
1bcce939	435	goto fail_string_ids;
f176a5d8	436
279cc49a MN	437	status = cdc_config_register(cdev);
279cc49a MN	438	if (unlikely(status < 0))
1bcce939	439	goto fail_string_ids;
7d16e8d3	440	usb_composite_overwrite_options(cdev, &coverwrite);
f176a5d8	441
279cc49a MN	442	/* we're done */
279cc49a MN	443	dev_info(&gadget->dev, DRIVER_DESC "\n");
f176a5d8 MN	444	return 0;
f176a5d8 MN	445
279cc49a MN	446
279cc49a MN	447	/* error recovery */
1bcce939 AP	448	fail_string_ids:
	449	fsg_common_remove_luns(fsg_opts->common);
	450	fail_set_cdev:
	451	fsg_common_free_luns(fsg_opts->common);
	452	fail_set_nluns:
	453	fsg_common_free_buffers(fsg_opts->common);
f176a5d8	454	fail2:
1bcce939	455	usb_put_function_instance(fi_msg);
f176a5d8	456	fail1:
59835ad7	457	usb_put_function_instance(fi_acm);
f176a5d8	458	fail0:
4d1a8f68 AP	459	#ifdef USB_ETH_RNDIS
	460	usb_put_function_instance(fi_rndis);
	461	fail:
	462	#endif
73889015 AP	463	#ifdef CONFIG_USB_G_MULTI_CDC
73889015 AP	464	usb_put_function_instance(fi_ecm);
73889015	465	#endif
f176a5d8 MN	466	return status;
	467	}
	468
c94e289f	469	static int multi_unbind(struct usb_composite_dev *cdev)
f176a5d8	470	{
1bcce939 AP	471	#ifdef CONFIG_USB_G_MULTI_CDC
	472	usb_put_function(f_msg_multi);
	473	#endif
	474	#ifdef USB_ETH_RNDIS
	475	usb_put_function(f_msg_rndis);
	476	#endif
	477	usb_put_function_instance(fi_msg);
59835ad7 SAS	478	#ifdef CONFIG_USB_G_MULTI_CDC
	479	usb_put_function(f_acm_multi);
	480	#endif
	481	#ifdef USB_ETH_RNDIS
	482	usb_put_function(f_acm_rndis);
	483	#endif
	484	usb_put_function_instance(fi_acm);
4d1a8f68 AP	485	#ifdef USB_ETH_RNDIS
	486	usb_put_function(f_rndis);
	487	usb_put_function_instance(fi_rndis);
	488	#endif
73889015 AP	489	#ifdef CONFIG_USB_G_MULTI_CDC
	490	usb_put_function(f_ecm);
	491	usb_put_function_instance(fi_ecm);
73889015	492	#endif
f176a5d8 MN	493	return 0;
	494	}
	495
	496
	497	/**************************** Some noise ****************************/
	498
	499
c94e289f	500	static struct usb_composite_driver multi_driver = {
f176a5d8 MN	501	.name = "g_multi",
	502	.dev = &device_desc,
	503	.strings = dev_strings,
35a0e0bf	504	.max_speed = USB_SPEED_HIGH,
03e42bd5	505	.bind = multi_bind,
c94e289f	506	.unbind = multi_unbind,
a99d8a45	507	.needs_serial = 1,
f176a5d8 MN	508	};
f176a5d8 MN	509
909346a8	510	module_usb_composite_driver(multi_driver);