[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / misc / tifm_core.c

/*
 *  tifm_core.c - TI FlashMedia driver
 *
 *  Copyright (C) 2006 Alex Dubov <oakad@yahoo.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.
 *
 */

#include <linux/tifm.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/idr.h>
#include <linux/module.h>

#define DRIVER_NAME "tifm_core"
#define DRIVER_VERSION "0.8"

static struct workqueue_struct *workqueue;
static DEFINE_IDR(tifm_adapter_idr);
static DEFINE_SPINLOCK(tifm_adapter_lock);

static const char *tifm_media_type_name(unsigned char type, unsigned char nt)
{
	const char *card_type_name[3][3] = {
		{ "SmartMedia/xD", "MemoryStick", "MMC/SD" },
		{ "XD", "MS", "SD"},
		{ "xd", "ms", "sd"}
	};

	if (nt > 2 || type < 1 || type > 3)
		return NULL;
	return card_type_name[nt][type - 1];
}

static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id)
{
	if (sock->type == id->type)
		return 1;
	return 0;
}

static int tifm_bus_match(struct device *dev, struct device_driver *drv)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver,
						  driver);
	struct tifm_device_id *ids = fm_drv->id_table;

	if (ids) {
		while (ids->type) {
			if (tifm_dev_match(sock, ids))
				return 1;
			++ids;
		}
	}
	return 0;
}

static int tifm_uevent(struct device *dev, struct kobj_uevent_env *env)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);

	if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1)))
		return -ENOMEM;

	return 0;
}

static int tifm_device_probe(struct device *dev)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
					       driver);
	int rc = -ENODEV;

	get_device(dev);
	if (dev->driver && drv->probe) {
		rc = drv->probe(sock);
		if (!rc)
			return 0;
	}
	put_device(dev);
	return rc;
}

static void tifm_dummy_event(struct tifm_dev *sock)
{
	return;
}

static int tifm_device_remove(struct device *dev)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
					       driver);

	if (dev->driver && drv->remove) {
		sock->card_event = tifm_dummy_event;
		sock->data_event = tifm_dummy_event;
		drv->remove(sock);
		sock->dev.driver = NULL;
	}

	put_device(dev);
	return 0;
}

#ifdef CONFIG_PM

static int tifm_device_suspend(struct device *dev, pm_message_t state)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
					       driver);

	if (dev->driver && drv->suspend)
		return drv->suspend(sock, state);
	return 0;
}

static int tifm_device_resume(struct device *dev)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
					       driver);

	if (dev->driver && drv->resume)
		return drv->resume(sock);
	return 0;
}

#else

#define tifm_device_suspend NULL
#define tifm_device_resume NULL

#endif /* CONFIG_PM */

static ssize_t type_show(struct device *dev, struct device_attribute *attr,
			 char *buf)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	return sprintf(buf, "%x", sock->type);
}

static struct device_attribute tifm_dev_attrs[] = {
	__ATTR(type, S_IRUGO, type_show, NULL),
	__ATTR_NULL
};

static struct bus_type tifm_bus_type = {
	.name      = "tifm",
	.dev_attrs = tifm_dev_attrs,
	.match     = tifm_bus_match,
	.uevent    = tifm_uevent,
	.probe     = tifm_device_probe,
	.remove    = tifm_device_remove,
	.suspend   = tifm_device_suspend,
	.resume    = tifm_device_resume
};

static void tifm_free(struct device *dev)
{
	struct tifm_adapter *fm = container_of(dev, struct tifm_adapter, dev);

	kfree(fm);
}

static struct class tifm_adapter_class = {
	.name    = "tifm_adapter",
	.dev_release = tifm_free
};

struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
					struct device *dev)
{
	struct tifm_adapter *fm;

	fm = kzalloc(sizeof(struct tifm_adapter)
		     + sizeof(struct tifm_dev*) * num_sockets, GFP_KERNEL);
	if (fm) {
		fm->dev.class = &tifm_adapter_class;
		fm->dev.parent = dev;
		device_initialize(&fm->dev);
		spin_lock_init(&fm->lock);
		fm->num_sockets = num_sockets;
	}
	return fm;
}
EXPORT_SYMBOL(tifm_alloc_adapter);

int tifm_add_adapter(struct tifm_adapter *fm)
{
	int rc;

	if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL))
		return -ENOMEM;

	spin_lock(&tifm_adapter_lock);
	rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
	spin_unlock(&tifm_adapter_lock);
	if (rc)
		return rc;

	dev_set_name(&fm->dev, "tifm%u", fm->id);
	rc = device_add(&fm->dev);
	if (rc) {
		spin_lock(&tifm_adapter_lock);
		idr_remove(&tifm_adapter_idr, fm->id);
		spin_unlock(&tifm_adapter_lock);
	}

	return rc;
}
EXPORT_SYMBOL(tifm_add_adapter);

void tifm_remove_adapter(struct tifm_adapter *fm)
{
	unsigned int cnt;

	flush_workqueue(workqueue);
	for (cnt = 0; cnt < fm->num_sockets; ++cnt) {
		if (fm->sockets[cnt])
			device_unregister(&fm->sockets[cnt]->dev);
	}

	spin_lock(&tifm_adapter_lock);
	idr_remove(&tifm_adapter_idr, fm->id);
	spin_unlock(&tifm_adapter_lock);
	device_del(&fm->dev);
}
EXPORT_SYMBOL(tifm_remove_adapter);

void tifm_free_adapter(struct tifm_adapter *fm)
{
	put_device(&fm->dev);
}
EXPORT_SYMBOL(tifm_free_adapter);

void tifm_free_device(struct device *dev)
{
	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	kfree(sock);
}
EXPORT_SYMBOL(tifm_free_device);

struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
				   unsigned char type)
{
	struct tifm_dev *sock = NULL;

	if (!tifm_media_type_name(type, 0))
		return sock;

	sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
	if (sock) {
		spin_lock_init(&sock->lock);
		sock->type = type;
		sock->socket_id = id;
		sock->card_event = tifm_dummy_event;
		sock->data_event = tifm_dummy_event;

		sock->dev.parent = fm->dev.parent;
		sock->dev.bus = &tifm_bus_type;
		sock->dev.dma_mask = fm->dev.parent->dma_mask;
		sock->dev.release = tifm_free_device;

		dev_set_name(&sock->dev, "tifm_%s%u:%u",
			     tifm_media_type_name(type, 2), fm->id, id);
		printk(KERN_INFO DRIVER_NAME
		       ": %s card detected in socket %u:%u\n",
		       tifm_media_type_name(type, 0), fm->id, id);
	}
	return sock;
}
EXPORT_SYMBOL(tifm_alloc_device);

void tifm_eject(struct tifm_dev *sock)
{
	struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
	fm->eject(fm, sock);
}
EXPORT_SYMBOL(tifm_eject);

int tifm_has_ms_pif(struct tifm_dev *sock)
{
	struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
	return fm->has_ms_pif(fm, sock);
}
EXPORT_SYMBOL(tifm_has_ms_pif);

int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
		int direction)
{
	return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
}
EXPORT_SYMBOL(tifm_map_sg);

void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
		   int direction)
{
	pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
}
EXPORT_SYMBOL(tifm_unmap_sg);

void tifm_queue_work(struct work_struct *work)
{
	queue_work(workqueue, work);
}
EXPORT_SYMBOL(tifm_queue_work);

int tifm_register_driver(struct tifm_driver *drv)
{
	drv->driver.bus = &tifm_bus_type;

	return driver_register(&drv->driver);
}
EXPORT_SYMBOL(tifm_register_driver);

void tifm_unregister_driver(struct tifm_driver *drv)
{
	driver_unregister(&drv->driver);
}
EXPORT_SYMBOL(tifm_unregister_driver);

static int __init tifm_init(void)
{
	int rc;

	workqueue = create_freezable_workqueue("tifm");
	if (!workqueue)
		return -ENOMEM;

	rc = bus_register(&tifm_bus_type);

	if (rc)
		goto err_out_wq;

	rc = class_register(&tifm_adapter_class);
	if (!rc)
		return 0;

	bus_unregister(&tifm_bus_type);

err_out_wq:
	destroy_workqueue(workqueue);

	return rc;
}

static void __exit tifm_exit(void)
{
	class_unregister(&tifm_adapter_class);
	bus_unregister(&tifm_bus_type);
	destroy_workqueue(workqueue);
}

subsys_initcall(tifm_init);
module_exit(tifm_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia core driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);
Commit	Line	Data
4020f2d7 AD	1	/*
	2	* tifm_core.c - TI FlashMedia driver
	3	*
	4	* Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	*/
	11
	12	#include <linux/tifm.h>
5a0e3ad6	13	#include <linux/slab.h>
4020f2d7 AD	14	#include <linux/init.h>
4020f2d7 AD	15	#include <linux/idr.h>
eb12a679	16	#include <linux/module.h>
4020f2d7 AD	17
4020f2d7 AD	18	#define DRIVER_NAME "tifm_core"
4552f0cb	19	#define DRIVER_VERSION "0.8"
4020f2d7	20
3540af8f	21	static struct workqueue_struct *workqueue;
4020f2d7 AD	22	static DEFINE_IDR(tifm_adapter_idr);
	23	static DEFINE_SPINLOCK(tifm_adapter_lock);
	24
e23f2b8a	25	static const char *tifm_media_type_name(unsigned char type, unsigned char nt)
4020f2d7	26	{
e23f2b8a AD	27	const char *card_type_name[3][3] = {
	28	{ "SmartMedia/xD", "MemoryStick", "MMC/SD" },
	29	{ "XD", "MS", "SD"},
	30	{ "xd", "ms", "sd"}
	31	};
	32
	33	if (nt > 2 \|\| type < 1 \|\| type > 3)
	34	return NULL;
	35	return card_type_name[nt][type - 1];
4020f2d7 AD	36	}
4020f2d7 AD	37
e23f2b8a	38	static int tifm_dev_match(struct tifm_dev sock, struct tifm_device_id id)
4020f2d7	39	{
e23f2b8a	40	if (sock->type == id->type)
4020f2d7	41	return 1;
e23f2b8a AD	42	return 0;
	43	}
	44
	45	static int tifm_bus_match(struct device dev, struct device_driver drv)
	46	{
	47	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	48	struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver,
	49	driver);
	50	struct tifm_device_id *ids = fm_drv->id_table;
	51
	52	if (ids) {
	53	while (ids->type) {
	54	if (tifm_dev_match(sock, ids))
	55	return 1;
	56	++ids;
	57	}
	58	}
	59	return 0;
4020f2d7 AD	60	}
4020f2d7 AD	61
7eff2e7a	62	static int tifm_uevent(struct device dev, struct kobj_uevent_env env)
4020f2d7	63	{
e23f2b8a	64	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
4020f2d7	65
7eff2e7a	66	if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1)))
4020f2d7 AD	67	return -ENOMEM;
	68
	69	return 0;
	70	}
	71
8dc4a61e AD	72	static int tifm_device_probe(struct device *dev)
	73	{
	74	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	75	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
	76	driver);
	77	int rc = -ENODEV;
	78
	79	get_device(dev);
	80	if (dev->driver && drv->probe) {
	81	rc = drv->probe(sock);
	82	if (!rc)
	83	return 0;
	84	}
	85	put_device(dev);
	86	return rc;
	87	}
	88
	89	static void tifm_dummy_event(struct tifm_dev *sock)
	90	{
	91	return;
	92	}
	93
	94	static int tifm_device_remove(struct device *dev)
	95	{
	96	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	97	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
	98	driver);
	99
	100	if (dev->driver && drv->remove) {
	101	sock->card_event = tifm_dummy_event;
	102	sock->data_event = tifm_dummy_event;
	103	drv->remove(sock);
	104	sock->dev.driver = NULL;
	105	}
	106
	107	put_device(dev);
	108	return 0;
	109	}
	110
41d78f74 AD	111	#ifdef CONFIG_PM
	112
	113	static int tifm_device_suspend(struct device *dev, pm_message_t state)
	114	{
91f8d011	115	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
8dc4a61e AD	116	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
8dc4a61e AD	117	driver);
41d78f74	118
8dc4a61e	119	if (dev->driver && drv->suspend)
91f8d011	120	return drv->suspend(sock, state);
41d78f74 AD	121	return 0;
	122	}
	123
	124	static int tifm_device_resume(struct device *dev)
	125	{
91f8d011	126	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
8dc4a61e AD	127	struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
8dc4a61e AD	128	driver);
41d78f74	129
8dc4a61e	130	if (dev->driver && drv->resume)
91f8d011	131	return drv->resume(sock);
41d78f74 AD	132	return 0;
	133	}
	134
	135	#else
	136
	137	#define tifm_device_suspend NULL
	138	#define tifm_device_resume NULL
	139
	140	#endif /* CONFIG_PM */
	141
4e64f223 AD	142	static ssize_t type_show(struct device dev, struct device_attribute attr,
	143	char *buf)
	144	{
	145	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
	146	return sprintf(buf, "%x", sock->type);
	147	}
	148
	149	static struct device_attribute tifm_dev_attrs[] = {
	150	__ATTR(type, S_IRUGO, type_show, NULL),
	151	__ATTR_NULL
	152	};
	153
4020f2d7	154	static struct bus_type tifm_bus_type = {
91f8d011 AD	155	.name = "tifm",
	156	.dev_attrs = tifm_dev_attrs,
	157	.match = tifm_bus_match,
	158	.uevent = tifm_uevent,
	159	.probe = tifm_device_probe,
	160	.remove = tifm_device_remove,
	161	.suspend = tifm_device_suspend,
	162	.resume = tifm_device_resume
4020f2d7 AD	163	};
4020f2d7 AD	164
7dd817d0	165	static void tifm_free(struct device *dev)
4020f2d7	166	{
7dd817d0	167	struct tifm_adapter *fm = container_of(dev, struct tifm_adapter, dev);
4020f2d7	168
4020f2d7 AD	169	kfree(fm);
	170	}
	171
	172	static struct class tifm_adapter_class = {
	173	.name = "tifm_adapter",
7dd817d0	174	.dev_release = tifm_free
4020f2d7 AD	175	};
4020f2d7 AD	176
6113ed73 AD	177	struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
6113ed73 AD	178	struct device *dev)
4020f2d7 AD	179	{
	180	struct tifm_adapter *fm;
	181
6113ed73 AD	182	fm = kzalloc(sizeof(struct tifm_adapter)
6113ed73 AD	183	+ sizeof(struct tifm_dev) num_sockets, GFP_KERNEL);
4020f2d7	184	if (fm) {
7dd817d0 TJ	185	fm->dev.class = &tifm_adapter_class;
	186	fm->dev.parent = dev;
	187	device_initialize(&fm->dev);
6113ed73 AD	188	spin_lock_init(&fm->lock);
6113ed73 AD	189	fm->num_sockets = num_sockets;
4020f2d7 AD	190	}
	191	return fm;
	192	}
	193	EXPORT_SYMBOL(tifm_alloc_adapter);
	194
3540af8f	195	int tifm_add_adapter(struct tifm_adapter *fm)
4020f2d7 AD	196	{
	197	int rc;
	198
	199	if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL))
	200	return -ENOMEM;
	201
	202	spin_lock(&tifm_adapter_lock);
	203	rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
	204	spin_unlock(&tifm_adapter_lock);
6113ed73 AD	205	if (rc)
	206	return rc;
	207
0bad16aa	208	dev_set_name(&fm->dev, "tifm%u", fm->id);
7dd817d0	209	rc = device_add(&fm->dev);
6113ed73 AD	210	if (rc) {
	211	spin_lock(&tifm_adapter_lock);
	212	idr_remove(&tifm_adapter_idr, fm->id);
	213	spin_unlock(&tifm_adapter_lock);
4020f2d7	214	}
6113ed73	215
4020f2d7 AD	216	return rc;
	217	}
	218	EXPORT_SYMBOL(tifm_add_adapter);
	219
	220	void tifm_remove_adapter(struct tifm_adapter *fm)
	221	{
6113ed73 AD	222	unsigned int cnt;
6113ed73 AD	223
3540af8f	224	flush_workqueue(workqueue);
6113ed73 AD	225	for (cnt = 0; cnt < fm->num_sockets; ++cnt) {
	226	if (fm->sockets[cnt])
	227	device_unregister(&fm->sockets[cnt]->dev);
	228	}
4020f2d7 AD	229
	230	spin_lock(&tifm_adapter_lock);
	231	idr_remove(&tifm_adapter_idr, fm->id);
	232	spin_unlock(&tifm_adapter_lock);
7dd817d0	233	device_del(&fm->dev);
4020f2d7 AD	234	}
	235	EXPORT_SYMBOL(tifm_remove_adapter);
	236
6113ed73 AD	237	void tifm_free_adapter(struct tifm_adapter *fm)
6113ed73 AD	238	{
7dd817d0	239	put_device(&fm->dev);
6113ed73 AD	240	}
	241	EXPORT_SYMBOL(tifm_free_adapter);
	242
4020f2d7 AD	243	void tifm_free_device(struct device *dev)
4020f2d7 AD	244	{
2428a8fe AD	245	struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
2428a8fe AD	246	kfree(sock);
4020f2d7 AD	247	}
	248	EXPORT_SYMBOL(tifm_free_device);
	249
2428a8fe AD	250	struct tifm_dev tifm_alloc_device(struct tifm_adapter fm, unsigned int id,
2428a8fe AD	251	unsigned char type)
4020f2d7	252	{
2428a8fe AD	253	struct tifm_dev *sock = NULL;
	254
	255	if (!tifm_media_type_name(type, 0))
	256	return sock;
4020f2d7	257
2428a8fe AD	258	sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
	259	if (sock) {
	260	spin_lock_init(&sock->lock);
	261	sock->type = type;
	262	sock->socket_id = id;
	263	sock->card_event = tifm_dummy_event;
	264	sock->data_event = tifm_dummy_event;
8e02f858	265
7dd817d0	266	sock->dev.parent = fm->dev.parent;
2428a8fe	267	sock->dev.bus = &tifm_bus_type;
7dd817d0	268	sock->dev.dma_mask = fm->dev.parent->dma_mask;
2428a8fe AD	269	sock->dev.release = tifm_free_device;
2428a8fe AD	270
0bad16aa KS	271	dev_set_name(&sock->dev, "tifm_%s%u:%u",
0bad16aa KS	272	tifm_media_type_name(type, 2), fm->id, id);
2428a8fe AD	273	printk(KERN_INFO DRIVER_NAME
	274	": %s card detected in socket %u:%u\n",
	275	tifm_media_type_name(type, 0), fm->id, id);
4020f2d7	276	}
2428a8fe	277	return sock;
4020f2d7 AD	278	}
	279	EXPORT_SYMBOL(tifm_alloc_device);
	280
	281	void tifm_eject(struct tifm_dev *sock)
	282	{
	283	struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
	284	fm->eject(fm, sock);
	285	}
	286	EXPORT_SYMBOL(tifm_eject);
	287
baf8532a AD	288	int tifm_has_ms_pif(struct tifm_dev *sock)
	289	{
	290	struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
	291	return fm->has_ms_pif(fm, sock);
	292	}
	293	EXPORT_SYMBOL(tifm_has_ms_pif);
	294
4020f2d7 AD	295	int tifm_map_sg(struct tifm_dev sock, struct scatterlist sg, int nents,
	296	int direction)
	297	{
	298	return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
	299	}
	300	EXPORT_SYMBOL(tifm_map_sg);
	301
	302	void tifm_unmap_sg(struct tifm_dev sock, struct scatterlist sg, int nents,
	303	int direction)
	304	{
	305	pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
	306	}
	307	EXPORT_SYMBOL(tifm_unmap_sg);
	308
3540af8f AD	309	void tifm_queue_work(struct work_struct *work)
	310	{
	311	queue_work(workqueue, work);
	312	}
	313	EXPORT_SYMBOL(tifm_queue_work);
	314
4020f2d7 AD	315	int tifm_register_driver(struct tifm_driver *drv)
	316	{
	317	drv->driver.bus = &tifm_bus_type;
4020f2d7 AD	318
	319	return driver_register(&drv->driver);
	320	}
	321	EXPORT_SYMBOL(tifm_register_driver);
	322
	323	void tifm_unregister_driver(struct tifm_driver *drv)
	324	{
	325	driver_unregister(&drv->driver);
	326	}
	327	EXPORT_SYMBOL(tifm_unregister_driver);
	328
	329	static int __init tifm_init(void)
	330	{
3540af8f	331	int rc;
4020f2d7	332
58a69cb4	333	workqueue = create_freezable_workqueue("tifm");
3540af8f AD	334	if (!workqueue)
	335	return -ENOMEM;
	336
	337	rc = bus_register(&tifm_bus_type);
	338
	339	if (rc)
	340	goto err_out_wq;
	341
	342	rc = class_register(&tifm_adapter_class);
	343	if (!rc)
	344	return 0;
	345
	346	bus_unregister(&tifm_bus_type);
	347
	348	err_out_wq:
	349	destroy_workqueue(workqueue);
4020f2d7 AD	350
	351	return rc;
	352	}
	353
	354	static void __exit tifm_exit(void)
	355	{
	356	class_unregister(&tifm_adapter_class);
	357	bus_unregister(&tifm_bus_type);
3540af8f	358	destroy_workqueue(workqueue);
4020f2d7 AD	359	}
	360
	361	subsys_initcall(tifm_init);
	362	module_exit(tifm_exit);
	363
	364	MODULE_LICENSE("GPL");
	365	MODULE_AUTHOR("Alex Dubov");
	366	MODULE_DESCRIPTION("TI FlashMedia core driver");
	367	MODULE_LICENSE("GPL");
	368	MODULE_VERSION(DRIVER_VERSION);