[linux-2.6-block.git] / drivers / net / wireless / wl1251 / sdio.c

/*
 * wl12xx SDIO routines
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 * Copyright (C) 2005 Texas Instruments Incorporated
 * Copyright (C) 2008 Google Inc
 * Copyright (C) 2009 Bob Copeland (me@bobcopeland.com)
 */
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/platform_device.h>
#include <linux/wl12xx.h>
#include <linux/irq.h>
#include <linux/pm_runtime.h>

#include "wl1251.h"

#ifndef SDIO_VENDOR_ID_TI
#define SDIO_VENDOR_ID_TI		0x104c
#endif

#ifndef SDIO_DEVICE_ID_TI_WL1251
#define SDIO_DEVICE_ID_TI_WL1251	0x9066
#endif

struct wl1251_sdio {
	struct sdio_func *func;
	u32 elp_val;
};

static struct sdio_func *wl_to_func(struct wl1251 *wl)
{
	struct wl1251_sdio *wl_sdio = wl->if_priv;
	return wl_sdio->func;
}

static void wl1251_sdio_interrupt(struct sdio_func *func)
{
	struct wl1251 *wl = sdio_get_drvdata(func);

	wl1251_debug(DEBUG_IRQ, "IRQ");

	/* FIXME should be synchronous for sdio */
	ieee80211_queue_work(wl->hw, &wl->irq_work);
}

static const struct sdio_device_id wl1251_devices[] = {
	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) },
	{}
};
MODULE_DEVICE_TABLE(sdio, wl1251_devices);


static void wl1251_sdio_read(struct wl1251 *wl, int addr,
			     void *buf, size_t len)
{
	int ret;
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	ret = sdio_memcpy_fromio(func, buf, addr, len);
	if (ret)
		wl1251_error("sdio read failed (%d)", ret);
	sdio_release_host(func);
}

static void wl1251_sdio_write(struct wl1251 *wl, int addr,
			      void *buf, size_t len)
{
	int ret;
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	ret = sdio_memcpy_toio(func, addr, buf, len);
	if (ret)
		wl1251_error("sdio write failed (%d)", ret);
	sdio_release_host(func);
}

static void wl1251_sdio_read_elp(struct wl1251 *wl, int addr, u32 *val)
{
	int ret = 0;
	struct wl1251_sdio *wl_sdio = wl->if_priv;
	struct sdio_func *func = wl_sdio->func;

	/*
	 * The hardware only supports RAW (read after write) access for
	 * reading, regular sdio_readb won't work here (it interprets
	 * the unused bits of CMD52 as write data even if we send read
	 * request).
	 */
	sdio_claim_host(func);
	*val = sdio_writeb_readb(func, wl_sdio->elp_val, addr, &ret);
	sdio_release_host(func);

	if (ret)
		wl1251_error("sdio_readb failed (%d)", ret);
}

static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val)
{
	int ret = 0;
	struct wl1251_sdio *wl_sdio = wl->if_priv;
	struct sdio_func *func = wl_sdio->func;

	sdio_claim_host(func);
	sdio_writeb(func, val, addr, &ret);
	sdio_release_host(func);

	if (ret)
		wl1251_error("sdio_writeb failed (%d)", ret);
	else
		wl_sdio->elp_val = val;
}

static void wl1251_sdio_reset(struct wl1251 *wl)
{
}

static void wl1251_sdio_enable_irq(struct wl1251 *wl)
{
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	sdio_claim_irq(func, wl1251_sdio_interrupt);
	sdio_release_host(func);
}

static void wl1251_sdio_disable_irq(struct wl1251 *wl)
{
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	sdio_release_irq(func);
	sdio_release_host(func);
}

/* Interrupts when using dedicated WLAN_IRQ pin */
static irqreturn_t wl1251_line_irq(int irq, void *cookie)
{
	struct wl1251 *wl = cookie;

	ieee80211_queue_work(wl->hw, &wl->irq_work);

	return IRQ_HANDLED;
}

static void wl1251_enable_line_irq(struct wl1251 *wl)
{
	return enable_irq(wl->irq);
}

static void wl1251_disable_line_irq(struct wl1251 *wl)
{
	return disable_irq(wl->irq);
}

static int wl1251_sdio_set_power(struct wl1251 *wl, bool enable)
{
	struct sdio_func *func = wl_to_func(wl);
	int ret;

	if (enable) {
		/*
		 * Power is controlled by runtime PM, but we still call board
		 * callback in case it wants to do any additional setup,
		 * for example enabling clock buffer for the module.
		 */
		if (wl->set_power)
			wl->set_power(true);

		ret = pm_runtime_get_sync(&func->dev);
		if (ret < 0)
			goto out;

		sdio_claim_host(func);
		sdio_enable_func(func);
		sdio_release_host(func);
	} else {
		sdio_claim_host(func);
		sdio_disable_func(func);
		sdio_release_host(func);

		ret = pm_runtime_put_sync(&func->dev);
		if (ret < 0)
			goto out;

		if (wl->set_power)
			wl->set_power(false);
	}

out:
	return ret;
}

static struct wl1251_if_operations wl1251_sdio_ops = {
	.read = wl1251_sdio_read,
	.write = wl1251_sdio_write,
	.write_elp = wl1251_sdio_write_elp,
	.read_elp = wl1251_sdio_read_elp,
	.reset = wl1251_sdio_reset,
	.power = wl1251_sdio_set_power,
};

static int wl1251_sdio_probe(struct sdio_func *func,
			     const struct sdio_device_id *id)
{
	int ret;
	struct wl1251 *wl;
	struct ieee80211_hw *hw;
	struct wl1251_sdio *wl_sdio;
	const struct wl12xx_platform_data *wl12xx_board_data;

	hw = wl1251_alloc_hw();
	if (IS_ERR(hw))
		return PTR_ERR(hw);

	wl = hw->priv;

	wl_sdio = kzalloc(sizeof(*wl_sdio), GFP_KERNEL);
	if (wl_sdio == NULL) {
		ret = -ENOMEM;
		goto out_free_hw;
	}

	sdio_claim_host(func);
	ret = sdio_enable_func(func);
	if (ret)
		goto release;

	sdio_set_block_size(func, 512);
	sdio_release_host(func);

	SET_IEEE80211_DEV(hw, &func->dev);
	wl_sdio->func = func;
	wl->if_priv = wl_sdio;
	wl->if_ops = &wl1251_sdio_ops;

	wl12xx_board_data = wl12xx_get_platform_data();
	if (!IS_ERR(wl12xx_board_data)) {
		wl->set_power = wl12xx_board_data->set_power;
		wl->irq = wl12xx_board_data->irq;
		wl->use_eeprom = wl12xx_board_data->use_eeprom;
	}

	if (wl->irq) {
		ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl);
		if (ret < 0) {
			wl1251_error("request_irq() failed: %d", ret);
			goto disable;
		}

		set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
		disable_irq(wl->irq);

		wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
		wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;

		wl1251_info("using dedicated interrupt line");
	} else {
		wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
		wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;

		wl1251_info("using SDIO interrupt");
	}

	ret = wl1251_init_ieee80211(wl);
	if (ret)
		goto out_free_irq;

	sdio_set_drvdata(func, wl);

	/* Tell PM core that we don't need the card to be powered now */
	pm_runtime_put_noidle(&func->dev);

	return ret;

out_free_irq:
	if (wl->irq)
		free_irq(wl->irq, wl);
disable:
	sdio_claim_host(func);
	sdio_disable_func(func);
release:
	sdio_release_host(func);
	kfree(wl_sdio);
out_free_hw:
	wl1251_free_hw(wl);
	return ret;
}

static void __devexit wl1251_sdio_remove(struct sdio_func *func)
{
	struct wl1251 *wl = sdio_get_drvdata(func);
	struct wl1251_sdio *wl_sdio = wl->if_priv;

	/* Undo decrement done above in wl1251_probe */
	pm_runtime_get_noresume(&func->dev);

	if (wl->irq)
		free_irq(wl->irq, wl);
	kfree(wl_sdio);
	wl1251_free_hw(wl);

	sdio_claim_host(func);
	sdio_release_irq(func);
	sdio_disable_func(func);
	sdio_release_host(func);
}

static int wl1251_suspend(struct device *dev)
{
	/*
	 * Tell MMC/SDIO core it's OK to power down the card
	 * (if it isn't already), but not to remove it completely.
	 */
	return 0;
}

static int wl1251_resume(struct device *dev)
{
	return 0;
}

static const struct dev_pm_ops wl1251_sdio_pm_ops = {
	.suspend        = wl1251_suspend,
	.resume         = wl1251_resume,
};

static struct sdio_driver wl1251_sdio_driver = {
	.name		= "wl1251_sdio",
	.id_table	= wl1251_devices,
	.probe		= wl1251_sdio_probe,
	.remove		= __devexit_p(wl1251_sdio_remove),
	.drv.pm		= &wl1251_sdio_pm_ops,
};

static int __init wl1251_sdio_init(void)
{
	int err;

	err = sdio_register_driver(&wl1251_sdio_driver);
	if (err)
		wl1251_error("failed to register sdio driver: %d", err);
	return err;
}

static void __exit wl1251_sdio_exit(void)
{
	sdio_unregister_driver(&wl1251_sdio_driver);
	wl1251_notice("unloaded");
}

module_init(wl1251_sdio_init);
module_exit(wl1251_sdio_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
Commit	Line	Data
3ec410d7 BC	1	/*
	2	* wl12xx SDIO routines
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	11	* General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software
	15	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	16	* 02110-1301 USA
	17	*
	18	* Copyright (C) 2005 Texas Instruments Incorporated
	19	* Copyright (C) 2008 Google Inc
	20	* Copyright (C) 2009 Bob Copeland (me@bobcopeland.com)
	21	*/
	22	#include <linux/module.h>
3ec410d7	23	#include <linux/mod_devicetable.h>
3ec410d7 BC	24	#include <linux/mmc/sdio_func.h>
3ec410d7 BC	25	#include <linux/mmc/sdio_ids.h>
8c00b39f	26	#include <linux/platform_device.h>
c1f9a095	27	#include <linux/wl12xx.h>
a02a2956	28	#include <linux/irq.h>
1d4b89f2	29	#include <linux/pm_runtime.h>
3ec410d7 BC	30
3ec410d7 BC	31	#include "wl1251.h"
3ec410d7 BC	32
	33	#ifndef SDIO_VENDOR_ID_TI
	34	#define SDIO_VENDOR_ID_TI 0x104c
	35	#endif
	36
	37	#ifndef SDIO_DEVICE_ID_TI_WL1251
	38	#define SDIO_DEVICE_ID_TI_WL1251 0x9066
	39	#endif
	40
832c10fd GI	41	struct wl1251_sdio {
	42	struct sdio_func *func;
	43	u32 elp_val;
	44	};
	45
3ec410d7 BC	46	static struct sdio_func wl_to_func(struct wl1251 wl)
3ec410d7 BC	47	{
832c10fd GI	48	struct wl1251_sdio *wl_sdio = wl->if_priv;
832c10fd GI	49	return wl_sdio->func;
3ec410d7 BC	50	}
	51
	52	static void wl1251_sdio_interrupt(struct sdio_func *func)
	53	{
b5ed9c1b BC	54	struct wl1251 *wl = sdio_get_drvdata(func);
	55
	56	wl1251_debug(DEBUG_IRQ, "IRQ");
	57
	58	/* FIXME should be synchronous for sdio */
16e711f9	59	ieee80211_queue_work(wl->hw, &wl->irq_work);
3ec410d7 BC	60	}
	61
	62	static const struct sdio_device_id wl1251_devices[] = {
	63	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) },
	64	{}
	65	};
	66	MODULE_DEVICE_TABLE(sdio, wl1251_devices);
	67
	68
3c9cb9c3 GI	69	static void wl1251_sdio_read(struct wl1251 *wl, int addr,
3c9cb9c3 GI	70	void *buf, size_t len)
3ec410d7 BC	71	{
	72	int ret;
	73	struct sdio_func *func = wl_to_func(wl);
	74
	75	sdio_claim_host(func);
	76	ret = sdio_memcpy_fromio(func, buf, addr, len);
	77	if (ret)
	78	wl1251_error("sdio read failed (%d)", ret);
	79	sdio_release_host(func);
	80	}
	81
3c9cb9c3 GI	82	static void wl1251_sdio_write(struct wl1251 *wl, int addr,
3c9cb9c3 GI	83	void *buf, size_t len)
3ec410d7 BC	84	{
	85	int ret;
	86	struct sdio_func *func = wl_to_func(wl);
	87
	88	sdio_claim_host(func);
	89	ret = sdio_memcpy_toio(func, addr, buf, len);
	90	if (ret)
	91	wl1251_error("sdio write failed (%d)", ret);
	92	sdio_release_host(func);
	93	}
	94
3f9e750d GI	95	static void wl1251_sdio_read_elp(struct wl1251 wl, int addr, u32 val)
	96	{
	97	int ret = 0;
832c10fd GI	98	struct wl1251_sdio *wl_sdio = wl->if_priv;
	99	struct sdio_func *func = wl_sdio->func;
	100
	101	/*
	102	* The hardware only supports RAW (read after write) access for
	103	* reading, regular sdio_readb won't work here (it interprets
	104	* the unused bits of CMD52 as write data even if we send read
	105	* request).
	106	*/
3f9e750d	107	sdio_claim_host(func);
832c10fd	108	*val = sdio_writeb_readb(func, wl_sdio->elp_val, addr, &ret);
3f9e750d GI	109	sdio_release_host(func);
	110
	111	if (ret)
	112	wl1251_error("sdio_readb failed (%d)", ret);
	113	}
	114
	115	static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val)
	116	{
	117	int ret = 0;
832c10fd GI	118	struct wl1251_sdio *wl_sdio = wl->if_priv;
832c10fd GI	119	struct sdio_func *func = wl_sdio->func;
3f9e750d GI	120
	121	sdio_claim_host(func);
	122	sdio_writeb(func, val, addr, &ret);
	123	sdio_release_host(func);
	124
	125	if (ret)
	126	wl1251_error("sdio_writeb failed (%d)", ret);
832c10fd GI	127	else
832c10fd GI	128	wl_sdio->elp_val = val;
3f9e750d GI	129	}
3f9e750d GI	130
3c9cb9c3	131	static void wl1251_sdio_reset(struct wl1251 *wl)
3ec410d7 BC	132	{
	133	}
	134
b5ed9c1b BC	135	static void wl1251_sdio_enable_irq(struct wl1251 *wl)
	136	{
	137	struct sdio_func *func = wl_to_func(wl);
	138
	139	sdio_claim_host(func);
	140	sdio_claim_irq(func, wl1251_sdio_interrupt);
	141	sdio_release_host(func);
	142	}
	143
	144	static void wl1251_sdio_disable_irq(struct wl1251 *wl)
	145	{
	146	struct sdio_func *func = wl_to_func(wl);
	147
	148	sdio_claim_host(func);
	149	sdio_release_irq(func);
	150	sdio_release_host(func);
	151	}
	152
a02a2956 GI	153	/* Interrupts when using dedicated WLAN_IRQ pin */
	154	static irqreturn_t wl1251_line_irq(int irq, void *cookie)
	155	{
	156	struct wl1251 *wl = cookie;
	157
	158	ieee80211_queue_work(wl->hw, &wl->irq_work);
	159
	160	return IRQ_HANDLED;
	161	}
	162
	163	static void wl1251_enable_line_irq(struct wl1251 *wl)
	164	{
	165	return enable_irq(wl->irq);
	166	}
	167
	168	static void wl1251_disable_line_irq(struct wl1251 *wl)
	169	{
	170	return disable_irq(wl->irq);
	171	}
	172
cb7bbc7a	173	static int wl1251_sdio_set_power(struct wl1251 *wl, bool enable)
3ec410d7	174	{
1d4b89f2 GI	175	struct sdio_func *func = wl_to_func(wl);
1d4b89f2 GI	176	int ret;
cb7bbc7a	177
1d4b89f2 GI	178	if (enable) {
	179	/*
	180	* Power is controlled by runtime PM, but we still call board
	181	* callback in case it wants to do any additional setup,
	182	* for example enabling clock buffer for the module.
	183	*/
	184	if (wl->set_power)
	185	wl->set_power(true);
	186
	187	ret = pm_runtime_get_sync(&func->dev);
	188	if (ret < 0)
	189	goto out;
	190
	191	sdio_claim_host(func);
	192	sdio_enable_func(func);
	193	sdio_release_host(func);
	194	} else {
	195	sdio_claim_host(func);
	196	sdio_disable_func(func);
	197	sdio_release_host(func);
	198
	199	ret = pm_runtime_put_sync(&func->dev);
	200	if (ret < 0)
	201	goto out;
	202
	203	if (wl->set_power)
	204	wl->set_power(false);
	205	}
	206
	207	out:
	208	return ret;
3ec410d7 BC	209	}
3ec410d7 BC	210
a02a2956	211	static struct wl1251_if_operations wl1251_sdio_ops = {
3ec410d7 BC	212	.read = wl1251_sdio_read,
3ec410d7 BC	213	.write = wl1251_sdio_write,
3f9e750d GI	214	.write_elp = wl1251_sdio_write_elp,
3f9e750d GI	215	.read_elp = wl1251_sdio_read_elp,
3ec410d7	216	.reset = wl1251_sdio_reset,
cb7bbc7a	217	.power = wl1251_sdio_set_power,
3ec410d7 BC	218	};
3ec410d7 BC	219
3c9cb9c3 GI	220	static int wl1251_sdio_probe(struct sdio_func *func,
3c9cb9c3 GI	221	const struct sdio_device_id *id)
3ec410d7 BC	222	{
	223	int ret;
	224	struct wl1251 *wl;
	225	struct ieee80211_hw *hw;
832c10fd	226	struct wl1251_sdio *wl_sdio;
e4b3fdb8	227	const struct wl12xx_platform_data *wl12xx_board_data;
3ec410d7 BC	228
	229	hw = wl1251_alloc_hw();
	230	if (IS_ERR(hw))
	231	return PTR_ERR(hw);
	232
	233	wl = hw->priv;
	234
832c10fd GI	235	wl_sdio = kzalloc(sizeof(*wl_sdio), GFP_KERNEL);
	236	if (wl_sdio == NULL) {
	237	ret = -ENOMEM;
	238	goto out_free_hw;
	239	}
	240
3ec410d7 BC	241	sdio_claim_host(func);
	242	ret = sdio_enable_func(func);
	243	if (ret)
	244	goto release;
	245
	246	sdio_set_block_size(func, 512);
a02a2956	247	sdio_release_host(func);
3ec410d7 BC	248
3ec410d7 BC	249	SET_IEEE80211_DEV(hw, &func->dev);
832c10fd GI	250	wl_sdio->func = func;
832c10fd GI	251	wl->if_priv = wl_sdio;
3ec410d7	252	wl->if_ops = &wl1251_sdio_ops;
3ec410d7	253
e4b3fdb8	254	wl12xx_board_data = wl12xx_get_platform_data();
ae29fbb1	255	if (!IS_ERR(wl12xx_board_data)) {
8c00b39f	256	wl->set_power = wl12xx_board_data->set_power;
a02a2956	257	wl->irq = wl12xx_board_data->irq;
8c00b39f GI	258	wl->use_eeprom = wl12xx_board_data->use_eeprom;
	259	}
	260
a02a2956 GI	261	if (wl->irq) {
	262	ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl);
	263	if (ret < 0) {
	264	wl1251_error("request_irq() failed: %d", ret);
	265	goto disable;
	266	}
	267
	268	set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
	269	disable_irq(wl->irq);
	270
	271	wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
	272	wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
	273
	274	wl1251_info("using dedicated interrupt line");
	275	} else {
	276	wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
	277	wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
	278
	279	wl1251_info("using SDIO interrupt");
	280	}
	281
3ec410d7	282	ret = wl1251_init_ieee80211(wl);
3ec410d7	283	if (ret)
a02a2956	284	goto out_free_irq;
3ec410d7	285
3ec410d7	286	sdio_set_drvdata(func, wl);
1d4b89f2 GI	287
	288	/* Tell PM core that we don't need the card to be powered now */
	289	pm_runtime_put_noidle(&func->dev);
	290
3ec410d7 BC	291	return ret;
3ec410d7 BC	292
a02a2956 GI	293	out_free_irq:
	294	if (wl->irq)
	295	free_irq(wl->irq, wl);
3ec410d7	296	disable:
b5ed9c1b	297	sdio_claim_host(func);
3ec410d7 BC	298	sdio_disable_func(func);
	299	release:
	300	sdio_release_host(func);
832c10fd GI	301	kfree(wl_sdio);
832c10fd GI	302	out_free_hw:
aa679c36	303	wl1251_free_hw(wl);
3ec410d7 BC	304	return ret;
	305	}
	306
	307	static void __devexit wl1251_sdio_remove(struct sdio_func *func)
	308	{
	309	struct wl1251 *wl = sdio_get_drvdata(func);
832c10fd	310	struct wl1251_sdio *wl_sdio = wl->if_priv;
3ec410d7	311
1d4b89f2 GI	312	/* Undo decrement done above in wl1251_probe */
	313	pm_runtime_get_noresume(&func->dev);
	314
a02a2956 GI	315	if (wl->irq)
a02a2956 GI	316	free_irq(wl->irq, wl);
832c10fd	317	kfree(wl_sdio);
3ec410d7 BC	318	wl1251_free_hw(wl);
	319
	320	sdio_claim_host(func);
	321	sdio_release_irq(func);
	322	sdio_disable_func(func);
	323	sdio_release_host(func);
	324	}
	325
1d4b89f2 GI	326	static int wl1251_suspend(struct device *dev)
	327	{
	328	/*
	329	* Tell MMC/SDIO core it's OK to power down the card
	330	* (if it isn't already), but not to remove it completely.
	331	*/
	332	return 0;
	333	}
	334
	335	static int wl1251_resume(struct device *dev)
	336	{
	337	return 0;
	338	}
	339
	340	static const struct dev_pm_ops wl1251_sdio_pm_ops = {
	341	.suspend = wl1251_suspend,
	342	.resume = wl1251_resume,
	343	};
	344
3ec410d7 BC	345	static struct sdio_driver wl1251_sdio_driver = {
	346	.name = "wl1251_sdio",
	347	.id_table = wl1251_devices,
	348	.probe = wl1251_sdio_probe,
	349	.remove = __devexit_p(wl1251_sdio_remove),
1d4b89f2	350	.drv.pm = &wl1251_sdio_pm_ops,
3ec410d7 BC	351	};
	352
	353	static int __init wl1251_sdio_init(void)
	354	{
	355	int err;
	356
	357	err = sdio_register_driver(&wl1251_sdio_driver);
	358	if (err)
	359	wl1251_error("failed to register sdio driver: %d", err);
	360	return err;
	361	}
	362
	363	static void __exit wl1251_sdio_exit(void)
	364	{
	365	sdio_unregister_driver(&wl1251_sdio_driver);
	366	wl1251_notice("unloaded");
	367	}
	368
	369	module_init(wl1251_sdio_init);
	370	module_exit(wl1251_sdio_exit);
	371
	372	MODULE_LICENSE("GPL");
31c726f0	373	MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");