[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[2];

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_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;

	if (gadget_is_otg(gadget) && !otg_desc[0]) {
		struct usb_descriptor_header *usb_desc;

		usb_desc = usb_otg_descriptor_alloc(gadget);
		if (!usb_desc)
			goto fail_string_ids;
		usb_otg_descriptor_init(gadget, usb_desc);
		otg_desc[0] = usb_desc;
		otg_desc[1] = NULL;
	}

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

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

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


	/* error recovery */
fail_otg_desc:
	kfree(otg_desc[0]);
	otg_desc[0] = NULL;
fail_string_ids:
	fsg_common_remove_luns(fsg_opts->common);
fail_set_cdev:
	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
	kfree(otg_desc[0]);
	otg_desc[0] = NULL;

	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
21ddc2a8	81	static const struct usb_descriptor_header *otg_desc[2];
f176a5d8	82
279cc49a	83	enum {
276e2e4f	84	MULTI_STRING_RNDIS_CONFIG_IDX = USB_GADGET_FIRST_AVAIL_IDX,
279cc49a	85	MULTI_STRING_CDC_CONFIG_IDX,
279cc49a	86	};
f176a5d8	87
f176a5d8	88	static struct usb_string strings_dev[] = {
276e2e4f	89	[USB_GADGET_MANUFACTURER_IDX].s = "",
d33f74fc	90	[USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
276e2e4f	91	[USB_GADGET_SERIAL_IDX].s = "",
279cc49a	92	[MULTI_STRING_RNDIS_CONFIG_IDX].s = "Multifunction with RNDIS",
279cc49a	93	[MULTI_STRING_CDC_CONFIG_IDX].s = "Multifunction with CDC ECM",
f176a5d8 MN	94	{ } /* end of list */
	95	};
	96
f176a5d8	97	static struct usb_gadget_strings *dev_strings[] = {
279cc49a MN	98	&(struct usb_gadget_strings){
	99	.language = 0x0409, /* en-us */
	100	.strings = strings_dev,
	101	},
f176a5d8 MN	102	NULL,
	103	};
	104
f176a5d8 MN	105
	106
	107
	108	/**************************** Configurations ****************************/
	109
279cc49a	110	static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
6fdc5dd2 AP	111	#ifdef CONFIG_USB_GADGET_DEBUG_FILES
	112
	113	static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
	114
	115	#else
	116
	117	/*
	118	* Number of buffers we will use.
	119	* 2 is usually enough for good buffering pipeline
	120	*/
	121	#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
	122
0c8b1992	123	#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
6fdc5dd2	124
279cc49a MN	125	FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
279cc49a MN	126
59835ad7	127	static struct usb_function_instance *fi_acm;
1bcce939	128	static struct usb_function_instance *fi_msg;
f176a5d8	129
279cc49a	130	/******** RNDIS ********/
f176a5d8	131
396cda90	132	#ifdef USB_ETH_RNDIS
4d1a8f68	133	static struct usb_function_instance *fi_rndis;
59835ad7	134	static struct usb_function *f_acm_rndis;
4d1a8f68	135	static struct usb_function *f_rndis;
1bcce939	136	static struct usb_function *f_msg_rndis;
f176a5d8	137
c94e289f	138	static int rndis_do_config(struct usb_configuration *c)
f176a5d8	139	{
1bcce939	140	struct fsg_opts *fsg_opts;
f176a5d8 MN	141	int ret;
	142
	143	if (gadget_is_otg(c->cdev->gadget)) {
	144	c->descriptors = otg_desc;
	145	c->bmAttributes \|= USB_CONFIG_ATT_WAKEUP;
	146	}
	147
4d1a8f68 AP	148	f_rndis = usb_get_function(fi_rndis);
	149	if (IS_ERR(f_rndis))
	150	return PTR_ERR(f_rndis);
	151
	152	ret = usb_add_function(c, f_rndis);
f176a5d8	153	if (ret < 0)
4d1a8f68	154	goto err_func_rndis;
f176a5d8	155
59835ad7	156	f_acm_rndis = usb_get_function(fi_acm);
4d1a8f68 AP	157	if (IS_ERR(f_acm_rndis)) {
	158	ret = PTR_ERR(f_acm_rndis);
	159	goto err_func_acm;
	160	}
59835ad7 SAS	161
	162	ret = usb_add_function(c, f_acm_rndis);
	163	if (ret)
	164	goto err_conf;
f176a5d8	165
1bcce939 AP	166	f_msg_rndis = usb_get_function(fi_msg);
	167	if (IS_ERR(f_msg_rndis)) {
	168	ret = PTR_ERR(f_msg_rndis);
59835ad7	169	goto err_fsg;
1bcce939 AP	170	}
	171
	172	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	173	ret = fsg_common_run_thread(fsg_opts->common);
	174	if (ret)
	175	goto err_run;
	176
	177	ret = usb_add_function(c, f_msg_rndis);
	178	if (ret)
	179	goto err_run;
f176a5d8 MN	180
f176a5d8 MN	181	return 0;
1bcce939 AP	182	err_run:
1bcce939 AP	183	usb_put_function(f_msg_rndis);
59835ad7 SAS	184	err_fsg:
	185	usb_remove_function(c, f_acm_rndis);
	186	err_conf:
	187	usb_put_function(f_acm_rndis);
4d1a8f68 AP	188	err_func_acm:
	189	usb_remove_function(c, f_rndis);
	190	err_func_rndis:
	191	usb_put_function(f_rndis);
59835ad7	192	return ret;
f176a5d8 MN	193	}
f176a5d8 MN	194
780cc0f3	195	static __ref int rndis_config_register(struct usb_composite_dev *cdev)
279cc49a MN	196	{
279cc49a MN	197	static struct usb_configuration config = {
279cc49a MN	198	.bConfigurationValue = MULTI_RNDIS_CONFIG_NUM,
	199	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
	200	};
	201
	202	config.label = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].s;
	203	config.iConfiguration = strings_dev[MULTI_STRING_RNDIS_CONFIG_IDX].id;
	204
c9bfff9c	205	return usb_add_config(cdev, &config, rndis_do_config);
279cc49a MN	206	}
	207
	208	#else
	209
780cc0f3	210	static __ref int rndis_config_register(struct usb_composite_dev *cdev)
279cc49a MN	211	{
	212	return 0;
	213	}
f176a5d8 MN	214
	215	#endif
	216
279cc49a MN	217
	218	/******** CDC ECM ********/
	219
f176a5d8	220	#ifdef CONFIG_USB_G_MULTI_CDC
73889015	221	static struct usb_function_instance *fi_ecm;
59835ad7	222	static struct usb_function *f_acm_multi;
73889015	223	static struct usb_function *f_ecm;
1bcce939	224	static struct usb_function *f_msg_multi;
f176a5d8	225
c94e289f	226	static int cdc_do_config(struct usb_configuration *c)
f176a5d8	227	{
1bcce939	228	struct fsg_opts *fsg_opts;
f176a5d8 MN	229	int ret;
	230
	231	if (gadget_is_otg(c->cdev->gadget)) {
	232	c->descriptors = otg_desc;
	233	c->bmAttributes \|= USB_CONFIG_ATT_WAKEUP;
	234	}
	235
73889015 AP	236	f_ecm = usb_get_function(fi_ecm);
	237	if (IS_ERR(f_ecm))
	238	return PTR_ERR(f_ecm);
	239
	240	ret = usb_add_function(c, f_ecm);
f176a5d8	241	if (ret < 0)
73889015	242	goto err_func_ecm;
f176a5d8	243
59835ad7 SAS	244	/* implicit port_num is zero */
59835ad7 SAS	245	f_acm_multi = usb_get_function(fi_acm);
73889015 AP	246	if (IS_ERR(f_acm_multi)) {
	247	ret = PTR_ERR(f_acm_multi);
	248	goto err_func_acm;
	249	}
59835ad7 SAS	250
	251	ret = usb_add_function(c, f_acm_multi);
	252	if (ret)
	253	goto err_conf;
f176a5d8	254
1bcce939 AP	255	f_msg_multi = usb_get_function(fi_msg);
	256	if (IS_ERR(f_msg_multi)) {
	257	ret = PTR_ERR(f_msg_multi);
59835ad7	258	goto err_fsg;
1bcce939 AP	259	}
	260
	261	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	262	ret = fsg_common_run_thread(fsg_opts->common);
	263	if (ret)
	264	goto err_run;
	265
	266	ret = usb_add_function(c, f_msg_multi);
	267	if (ret)
	268	goto err_run;
f176a5d8 MN	269
f176a5d8 MN	270	return 0;
1bcce939 AP	271	err_run:
1bcce939 AP	272	usb_put_function(f_msg_multi);
59835ad7 SAS	273	err_fsg:
	274	usb_remove_function(c, f_acm_multi);
	275	err_conf:
	276	usb_put_function(f_acm_multi);
73889015 AP	277	err_func_acm:
	278	usb_remove_function(c, f_ecm);
	279	err_func_ecm:
	280	usb_put_function(f_ecm);
59835ad7	281	return ret;
f176a5d8 MN	282	}
f176a5d8 MN	283
780cc0f3	284	static __ref int cdc_config_register(struct usb_composite_dev *cdev)
279cc49a MN	285	{
279cc49a MN	286	static struct usb_configuration config = {
279cc49a MN	287	.bConfigurationValue = MULTI_CDC_CONFIG_NUM,
	288	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
	289	};
	290
	291	config.label = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].s;
	292	config.iConfiguration = strings_dev[MULTI_STRING_CDC_CONFIG_IDX].id;
	293
c9bfff9c	294	return usb_add_config(cdev, &config, cdc_do_config);
279cc49a MN	295	}
	296
	297	#else
	298
780cc0f3	299	static __ref int cdc_config_register(struct usb_composite_dev *cdev)
279cc49a MN	300	{
	301	return 0;
	302	}
f176a5d8 MN	303
	304	#endif
	305
	306
	307
	308	/**************************** Gadget Bind ****************************/
	309
279cc49a	310	static int __ref multi_bind(struct usb_composite_dev *cdev)
f176a5d8 MN	311	{
f176a5d8 MN	312	struct usb_gadget *gadget = cdev->gadget;
73889015 AP	313	#ifdef CONFIG_USB_G_MULTI_CDC
73889015 AP	314	struct f_ecm_opts *ecm_opts;
4d1a8f68 AP	315	#endif
	316	#ifdef USB_ETH_RNDIS
	317	struct f_rndis_opts *rndis_opts;
73889015	318	#endif
1bcce939 AP	319	struct fsg_opts *fsg_opts;
1bcce939 AP	320	struct fsg_config config;
ed9cbda6	321	int status;
f176a5d8 MN	322
	323	if (!can_support_ecm(cdev->gadget)) {
	324	dev_err(&gadget->dev, "controller '%s' not usable\n",
4d1a8f68	325	gadget->name);
f176a5d8 MN	326	return -EINVAL;
	327	}
	328
73889015 AP	329	#ifdef CONFIG_USB_G_MULTI_CDC
	330	fi_ecm = usb_get_function_instance("ecm");
	331	if (IS_ERR(fi_ecm))
	332	return PTR_ERR(fi_ecm);
	333
	334	ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst);
	335
	336	gether_set_qmult(ecm_opts->net, qmult);
	337	if (!gether_set_host_addr(ecm_opts->net, host_addr))
	338	pr_info("using host ethernet address: %s", host_addr);
	339	if (!gether_set_dev_addr(ecm_opts->net, dev_addr))
	340	pr_info("using self ethernet address: %s", dev_addr);
4d1a8f68	341	#endif
73889015	342
4d1a8f68 AP	343	#ifdef USB_ETH_RNDIS
	344	fi_rndis = usb_get_function_instance("rndis");
	345	if (IS_ERR(fi_rndis)) {
	346	status = PTR_ERR(fi_rndis);
	347	goto fail;
	348	}
73889015	349
4d1a8f68	350	rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst);
73889015	351
4d1a8f68 AP	352	gether_set_qmult(rndis_opts->net, qmult);
	353	if (!gether_set_host_addr(rndis_opts->net, host_addr))
	354	pr_info("using host ethernet address: %s", host_addr);
	355	if (!gether_set_dev_addr(rndis_opts->net, dev_addr))
	356	pr_info("using self ethernet address: %s", dev_addr);
73889015 AP	357	#endif
	358
	359	#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS)
4d1a8f68 AP	360	/*
	361	* If both ecm and rndis are selected then:
	362	* 1) rndis borrows the net interface from ecm
	363	* 2) since the interface is shared it must not be bound
	364	* twice - in ecm's _and_ rndis' binds, so do it here.
	365	*/
73889015 AP	366	gether_set_gadget(ecm_opts->net, cdev->gadget);
	367	status = gether_register_netdev(ecm_opts->net);
	368	if (status)
	369	goto fail0;
73889015	370
4d1a8f68 AP	371	rndis_borrow_net(fi_rndis, ecm_opts->net);
4d1a8f68 AP	372	ecm_opts->bound = true;
73889015	373	#endif
f176a5d8 MN	374
f176a5d8 MN	375	/* set up serial link layer */
59835ad7 SAS	376	fi_acm = usb_get_function_instance("acm");
	377	if (IS_ERR(fi_acm)) {
	378	status = PTR_ERR(fi_acm);
c4ed4ac1	379	goto fail0;
59835ad7 SAS	380	}
59835ad7 SAS	381
f176a5d8	382	/* set up mass storage function */
1bcce939 AP	383	fi_msg = usb_get_function_instance("mass_storage");
	384	if (IS_ERR(fi_msg)) {
	385	status = PTR_ERR(fi_msg);
	386	goto fail1;
f176a5d8	387	}
1bcce939 AP	388	fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
	389	fsg_opts = fsg_opts_from_func_inst(fi_msg);
	390
	391	fsg_opts->no_configfs = true;
	392	status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers);
	393	if (status)
	394	goto fail2;
	395
1bcce939 AP	396	status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
	397	if (status)
	398	goto fail_set_cdev;
	399
	400	fsg_common_set_sysfs(fsg_opts->common, true);
	401	status = fsg_common_create_luns(fsg_opts->common, &config);
	402	if (status)
	403	goto fail_set_cdev;
	404
	405	fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name,
	406	config.product_name);
f176a5d8	407
a99d8a45	408	/* allocate string IDs */
279cc49a MN	409	status = usb_string_ids_tab(cdev, strings_dev);
279cc49a MN	410	if (unlikely(status < 0))
1bcce939	411	goto fail_string_ids;
d33f74fc	412	device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
f176a5d8	413
21ddc2a8 LJ	414	if (gadget_is_otg(gadget) && !otg_desc[0]) {
	415	struct usb_descriptor_header *usb_desc;
	416
	417	usb_desc = usb_otg_descriptor_alloc(gadget);
	418	if (!usb_desc)
	419	goto fail_string_ids;
	420	usb_otg_descriptor_init(gadget, usb_desc);
	421	otg_desc[0] = usb_desc;
	422	otg_desc[1] = NULL;
	423	}
	424
279cc49a MN	425	/* register configurations */
	426	status = rndis_config_register(cdev);
	427	if (unlikely(status < 0))
21ddc2a8	428	goto fail_otg_desc;
f176a5d8	429
279cc49a MN	430	status = cdc_config_register(cdev);
279cc49a MN	431	if (unlikely(status < 0))
21ddc2a8	432	goto fail_otg_desc;
7d16e8d3	433	usb_composite_overwrite_options(cdev, &coverwrite);
f176a5d8	434
279cc49a MN	435	/* we're done */
279cc49a MN	436	dev_info(&gadget->dev, DRIVER_DESC "\n");
f176a5d8 MN	437	return 0;
f176a5d8 MN	438
279cc49a MN	439
279cc49a MN	440	/* error recovery */
21ddc2a8 LJ	441	fail_otg_desc:
	442	kfree(otg_desc[0]);
	443	otg_desc[0] = NULL;
1bcce939 AP	444	fail_string_ids:
	445	fsg_common_remove_luns(fsg_opts->common);
	446	fail_set_cdev:
1bcce939	447	fsg_common_free_buffers(fsg_opts->common);
f176a5d8	448	fail2:
1bcce939	449	usb_put_function_instance(fi_msg);
f176a5d8	450	fail1:
59835ad7	451	usb_put_function_instance(fi_acm);
f176a5d8	452	fail0:
4d1a8f68 AP	453	#ifdef USB_ETH_RNDIS
	454	usb_put_function_instance(fi_rndis);
	455	fail:
	456	#endif
73889015 AP	457	#ifdef CONFIG_USB_G_MULTI_CDC
73889015 AP	458	usb_put_function_instance(fi_ecm);
73889015	459	#endif
f176a5d8 MN	460	return status;
	461	}
	462
c94e289f	463	static int multi_unbind(struct usb_composite_dev *cdev)
f176a5d8	464	{
1bcce939 AP	465	#ifdef CONFIG_USB_G_MULTI_CDC
	466	usb_put_function(f_msg_multi);
	467	#endif
	468	#ifdef USB_ETH_RNDIS
	469	usb_put_function(f_msg_rndis);
	470	#endif
	471	usb_put_function_instance(fi_msg);
59835ad7 SAS	472	#ifdef CONFIG_USB_G_MULTI_CDC
	473	usb_put_function(f_acm_multi);
	474	#endif
	475	#ifdef USB_ETH_RNDIS
	476	usb_put_function(f_acm_rndis);
	477	#endif
	478	usb_put_function_instance(fi_acm);
4d1a8f68 AP	479	#ifdef USB_ETH_RNDIS
	480	usb_put_function(f_rndis);
	481	usb_put_function_instance(fi_rndis);
	482	#endif
73889015 AP	483	#ifdef CONFIG_USB_G_MULTI_CDC
	484	usb_put_function(f_ecm);
	485	usb_put_function_instance(fi_ecm);
73889015	486	#endif
21ddc2a8 LJ	487	kfree(otg_desc[0]);
	488	otg_desc[0] = NULL;
	489
f176a5d8 MN	490	return 0;
	491	}
	492
	493
	494	/**************************** Some noise ****************************/
	495
	496
c94e289f	497	static struct usb_composite_driver multi_driver = {
f176a5d8 MN	498	.name = "g_multi",
	499	.dev = &device_desc,
	500	.strings = dev_strings,
35a0e0bf	501	.max_speed = USB_SPEED_HIGH,
03e42bd5	502	.bind = multi_bind,
c94e289f	503	.unbind = multi_unbind,
a99d8a45	504	.needs_serial = 1,
f176a5d8 MN	505	};
f176a5d8 MN	506
909346a8	507	module_usb_composite_driver(multi_driver);