[deliverable/linux.git] / drivers / net / wireless / cw1200 / cw1200_sdio.c

/*
 * Mac80211 SDIO driver for ST-Ericsson CW1200 device
 *
 * Copyright (c) 2010, ST-Ericsson
 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
 *
 * 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/module.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio.h>
#include <net/mac80211.h>

#include "cw1200.h"
#include "hwbus.h"
#include <linux/platform_data/cw1200_platform.h>
#include "hwio.h"

MODULE_AUTHOR("Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>");
MODULE_DESCRIPTION("mac80211 ST-Ericsson CW1200 SDIO driver");
MODULE_LICENSE("GPL");

#define SDIO_BLOCK_SIZE (512)

struct hwbus_priv {
	struct sdio_func	*func;
	struct cw1200_common	*core;
	const struct cw1200_platform_data_sdio *pdata;
};

#ifndef SDIO_VENDOR_ID_STE
#define SDIO_VENDOR_ID_STE		0x0020
#endif

#ifndef SDIO_DEVICE_ID_STE_CW1200
#define SDIO_DEVICE_ID_STE_CW1200	0x2280
#endif

static const struct sdio_device_id cw1200_sdio_ids[] = {
	{ SDIO_DEVICE(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200) },
	{ /* end: all zeroes */			},
};

/* hwbus_ops implemetation */

static int cw1200_sdio_memcpy_fromio(struct hwbus_priv *self,
				     unsigned int addr,
				     void *dst, int count)
{
	return sdio_memcpy_fromio(self->func, dst, addr, count);
}

static int cw1200_sdio_memcpy_toio(struct hwbus_priv *self,
				   unsigned int addr,
				   const void *src, int count)
{
	return sdio_memcpy_toio(self->func, addr, (void *)src, count);
}

static void cw1200_sdio_lock(struct hwbus_priv *self)
{
	sdio_claim_host(self->func);
}

static void cw1200_sdio_unlock(struct hwbus_priv *self)
{
	sdio_release_host(self->func);
}

static void cw1200_sdio_irq_handler(struct sdio_func *func)
{
	struct hwbus_priv *self = sdio_get_drvdata(func);

	/* note:  sdio_host already claimed here. */
	if (self->core)
		cw1200_irq_handler(self->core);
}

static irqreturn_t cw1200_gpio_hardirq(int irq, void *dev_id)
{
	return IRQ_WAKE_THREAD;
}

static irqreturn_t cw1200_gpio_irq(int irq, void *dev_id)
{
	struct hwbus_priv *self = dev_id;

	if (self->core) {
		sdio_claim_host(self->func);
		cw1200_irq_handler(self->core);
		sdio_release_host(self->func);
		return IRQ_HANDLED;
	} else {
		return IRQ_NONE;
	}
}

static int cw1200_request_irq(struct hwbus_priv *self)
{
	int ret;
	const struct resource *irq = self->pdata->irq;
	u8 cccr;

	cccr = sdio_f0_readb(self->func, SDIO_CCCR_IENx, &ret);
	if (WARN_ON(ret))
		goto err;

	/* Master interrupt enable ... */
	cccr |= BIT(0);

	/* ... for our function */
	cccr |= BIT(self->func->num);

	sdio_f0_writeb(self->func, cccr, SDIO_CCCR_IENx, &ret);
	if (WARN_ON(ret))
		goto err;

	ret = enable_irq_wake(irq->start);
	if (WARN_ON(ret))
		goto err;

	/* Request the IRQ */
	ret =  request_threaded_irq(irq->start, cw1200_gpio_hardirq,
				    cw1200_gpio_irq,
				    IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
				    irq->name, self);
	if (WARN_ON(ret))
		goto err;

	return 0;

err:
	return ret;
}

static int cw1200_sdio_irq_subscribe(struct hwbus_priv *self)
{
	int ret = 0;

	pr_debug("SW IRQ subscribe\n");
	sdio_claim_host(self->func);
	if (self->pdata->irq)
		ret = cw1200_request_irq(self);
	else
		ret = sdio_claim_irq(self->func, cw1200_sdio_irq_handler);

	sdio_release_host(self->func);
	return ret;
}

static int cw1200_sdio_irq_unsubscribe(struct hwbus_priv *self)
{
	int ret = 0;

	pr_debug("SW IRQ unsubscribe\n");

	if (self->pdata->irq) {
		disable_irq_wake(self->pdata->irq->start);
		free_irq(self->pdata->irq->start, self);
	} else {
		sdio_claim_host(self->func);
		ret = sdio_release_irq(self->func);
		sdio_release_host(self->func);
	}
	return ret;
}

static int cw1200_sdio_off(const struct cw1200_platform_data_sdio *pdata)
{
	const struct resource *reset = pdata->reset;

	if (reset) {
		gpio_set_value(reset->start, 0);
		msleep(30); /* Min is 2 * CLK32K cycles */
		gpio_free(reset->start);
	}

	if (pdata->power_ctrl)
		pdata->power_ctrl(pdata, false);
	if (pdata->clk_ctrl)
		pdata->clk_ctrl(pdata, false);

	return 0;
}

static int cw1200_sdio_on(const struct cw1200_platform_data_sdio *pdata)
{
	const struct resource *reset = pdata->reset;
	const struct resource *powerup = pdata->powerup;

	/* Ensure I/Os are pulled low */
	if (reset) {
		gpio_request(reset->start, reset->name);
		gpio_direction_output(reset->start, 0);
	}
	if (powerup) {
		gpio_request(powerup->start, powerup->name);
		gpio_direction_output(powerup->start, 0);
	}
	if (reset || powerup)
		msleep(50); /* Settle time */

	/* Enable 3v3 and 1v8 to hardware */
	if (pdata->power_ctrl) {
		if (pdata->power_ctrl(pdata, true)) {
			pr_err("power_ctrl() failed!\n");
			return -1;
		}
	}

	/* Enable CLK32K */
	if (pdata->clk_ctrl) {
		if (pdata->clk_ctrl(pdata, true)) {
			pr_err("clk_ctrl() failed!\n");
			return -1;
		}
		msleep(10); /* Delay until clock is stable for 2 cycles */
	}

	/* Enable POWERUP signal */
	if (powerup) {
		gpio_set_value(powerup->start, 1);
		msleep(250); /* or more..? */
	}
	/* Enable RSTn signal */
	if (reset) {
		gpio_set_value(reset->start, 1);
		msleep(50); /* Or more..? */
	}
	return 0;
}

static size_t cw1200_sdio_align_size(struct hwbus_priv *self, size_t size)
{
	if (self->pdata->no_nptb)
		size = round_up(size, SDIO_BLOCK_SIZE);
	else
		size = sdio_align_size(self->func, size);

	return size;
}

static int cw1200_sdio_pm(struct hwbus_priv *self, bool suspend)
{
	int ret = 0;

	if (self->pdata->irq)
		ret = irq_set_irq_wake(self->pdata->irq->start, suspend);
	return ret;
}

static struct hwbus_ops cw1200_sdio_hwbus_ops = {
	.hwbus_memcpy_fromio	= cw1200_sdio_memcpy_fromio,
	.hwbus_memcpy_toio	= cw1200_sdio_memcpy_toio,
	.lock			= cw1200_sdio_lock,
	.unlock			= cw1200_sdio_unlock,
	.align_size		= cw1200_sdio_align_size,
	.power_mgmt		= cw1200_sdio_pm,
};

/* Probe Function to be called by SDIO stack when device is discovered */
static int cw1200_sdio_probe(struct sdio_func *func,
				       const struct sdio_device_id *id)
{
	struct hwbus_priv *self;
	int status;

	pr_info("cw1200_wlan_sdio: Probe called\n");

       /* We are only able to handle the wlan function */
	if (func->num != 0x01)
		return -ENODEV;

	self = kzalloc(sizeof(*self), GFP_KERNEL);
	if (!self) {
		pr_err("Can't allocate SDIO hwbus_priv.\n");
		return -ENOMEM;
	}

	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;

	self->pdata = cw1200_get_platform_data();
	self->func = func;
	sdio_set_drvdata(func, self);
	sdio_claim_host(func);
	sdio_enable_func(func);
	sdio_release_host(func);

	status = cw1200_sdio_irq_subscribe(self);

	status = cw1200_core_probe(&cw1200_sdio_hwbus_ops,
				   self, &func->dev, &self->core,
				   self->pdata->ref_clk,
				   self->pdata->macaddr,
				   self->pdata->sdd_file,
				   self->pdata->have_5ghz);
	if (status) {
		cw1200_sdio_irq_unsubscribe(self);
		sdio_claim_host(func);
		sdio_disable_func(func);
		sdio_release_host(func);
		sdio_set_drvdata(func, NULL);
		kfree(self);
	}

	return status;
}

/* Disconnect Function to be called by SDIO stack when
 * device is disconnected */
static void cw1200_sdio_disconnect(struct sdio_func *func)
{
	struct hwbus_priv *self = sdio_get_drvdata(func);

	if (self) {
		cw1200_sdio_irq_unsubscribe(self);
		if (self->core) {
			cw1200_core_release(self->core);
			self->core = NULL;
		}
		sdio_claim_host(func);
		sdio_disable_func(func);
		sdio_release_host(func);
		sdio_set_drvdata(func, NULL);
		kfree(self);
	}
}

#ifdef CONFIG_PM
static int cw1200_sdio_suspend(struct device *dev)
{
	int ret;
	struct sdio_func *func = dev_to_sdio_func(dev);
	struct hwbus_priv *self = sdio_get_drvdata(func);

	if (!cw1200_can_suspend(self->core))
		return -EAGAIN;

	/* Notify SDIO that CW1200 will remain powered during suspend */
	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	if (ret)
		pr_err("Error setting SDIO pm flags: %i\n", ret);

	return ret;
}

static int cw1200_sdio_resume(struct device *dev)
{
	return 0;
}

static const struct dev_pm_ops cw1200_pm_ops = {
	.suspend = cw1200_sdio_suspend,
	.resume = cw1200_sdio_resume,
};
#endif

static struct sdio_driver sdio_driver = {
	.name		= "cw1200_wlan_sdio",
	.id_table	= cw1200_sdio_ids,
	.probe		= cw1200_sdio_probe,
	.remove		= cw1200_sdio_disconnect,
#ifdef CONFIG_PM
	.drv = {
		.pm = &cw1200_pm_ops,
	}
#endif
};

/* Init Module function -> Called by insmod */
static int __init cw1200_sdio_init(void)
{
	const struct cw1200_platform_data_sdio *pdata;
	int ret;

	pdata = cw1200_get_platform_data();

	if (cw1200_sdio_on(pdata)) {
		ret = -1;
		goto err;
	}

	ret = sdio_register_driver(&sdio_driver);
	if (ret)
		goto err;

	return 0;

err:
	cw1200_sdio_off(pdata);
	return ret;
}

/* Called at Driver Unloading */
static void __exit cw1200_sdio_exit(void)
{
	const struct cw1200_platform_data_sdio *pdata;
	pdata = cw1200_get_platform_data();
	sdio_unregister_driver(&sdio_driver);
	cw1200_sdio_off(pdata);
}


module_init(cw1200_sdio_init);
module_exit(cw1200_sdio_exit);
Commit	Line	Data
a910e4a9 SP	1	/*
	2	* Mac80211 SDIO driver for ST-Ericsson CW1200 device
	3	*
	4	* Copyright (c) 2010, ST-Ericsson
	5	* Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
a910e4a9 SP	12	#include <linux/module.h>
	13	#include <linux/gpio.h>
	14	#include <linux/delay.h>
	15	#include <linux/mmc/host.h>
	16	#include <linux/mmc/sdio_func.h>
	17	#include <linux/mmc/card.h>
	18	#include <linux/mmc/sdio.h>
	19	#include <net/mac80211.h>
	20
	21	#include "cw1200.h"
911373cc	22	#include "hwbus.h"
c9922198	23	#include <linux/platform_data/cw1200_platform.h>
a910e4a9 SP	24	#include "hwio.h"
	25
	26	MODULE_AUTHOR("Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>");
	27	MODULE_DESCRIPTION("mac80211 ST-Ericsson CW1200 SDIO driver");
	28	MODULE_LICENSE("GPL");
	29
	30	#define SDIO_BLOCK_SIZE (512)
	31
911373cc	32	struct hwbus_priv {
a910e4a9 SP	33	struct sdio_func *func;
	34	struct cw1200_common *core;
	35	const struct cw1200_platform_data_sdio *pdata;
	36	};
	37
	38	#ifndef SDIO_VENDOR_ID_STE
	39	#define SDIO_VENDOR_ID_STE 0x0020
	40	#endif
	41
	42	#ifndef SDIO_DEVICE_ID_STE_CW1200
	43	#define SDIO_DEVICE_ID_STE_CW1200 0x2280
	44	#endif
	45
	46	static const struct sdio_device_id cw1200_sdio_ids[] = {
	47	{ SDIO_DEVICE(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200) },
	48	{ /* end: all zeroes */ },
	49	};
	50
911373cc	51	/* hwbus_ops implemetation */
a910e4a9	52
911373cc	53	static int cw1200_sdio_memcpy_fromio(struct hwbus_priv *self,
a910e4a9 SP	54	unsigned int addr,
	55	void *dst, int count)
	56	{
	57	return sdio_memcpy_fromio(self->func, dst, addr, count);
	58	}
	59
911373cc	60	static int cw1200_sdio_memcpy_toio(struct hwbus_priv *self,
a910e4a9 SP	61	unsigned int addr,
	62	const void *src, int count)
	63	{
	64	return sdio_memcpy_toio(self->func, addr, (void *)src, count);
	65	}
	66
911373cc	67	static void cw1200_sdio_lock(struct hwbus_priv *self)
a910e4a9 SP	68	{
	69	sdio_claim_host(self->func);
	70	}
	71
911373cc	72	static void cw1200_sdio_unlock(struct hwbus_priv *self)
a910e4a9 SP	73	{
	74	sdio_release_host(self->func);
	75	}
	76
	77	static void cw1200_sdio_irq_handler(struct sdio_func *func)
	78	{
911373cc	79	struct hwbus_priv *self = sdio_get_drvdata(func);
a910e4a9 SP	80
	81	/* note: sdio_host already claimed here. */
	82	if (self->core)
	83	cw1200_irq_handler(self->core);
	84	}
	85
	86	static irqreturn_t cw1200_gpio_hardirq(int irq, void *dev_id)
	87	{
	88	return IRQ_WAKE_THREAD;
	89	}
	90
	91	static irqreturn_t cw1200_gpio_irq(int irq, void *dev_id)
	92	{
911373cc	93	struct hwbus_priv *self = dev_id;
a910e4a9 SP	94
	95	if (self->core) {
	96	sdio_claim_host(self->func);
	97	cw1200_irq_handler(self->core);
	98	sdio_release_host(self->func);
	99	return IRQ_HANDLED;
	100	} else {
	101	return IRQ_NONE;
	102	}
	103	}
	104
911373cc	105	static int cw1200_request_irq(struct hwbus_priv *self)
a910e4a9 SP	106	{
	107	int ret;
	108	const struct resource *irq = self->pdata->irq;
	109	u8 cccr;
	110
	111	cccr = sdio_f0_readb(self->func, SDIO_CCCR_IENx, &ret);
	112	if (WARN_ON(ret))
	113	goto err;
	114
	115	/* Master interrupt enable ... */
	116	cccr \|= BIT(0);
	117
	118	/* ... for our function */
	119	cccr \|= BIT(self->func->num);
	120
	121	sdio_f0_writeb(self->func, cccr, SDIO_CCCR_IENx, &ret);
	122	if (WARN_ON(ret))
	123	goto err;
	124
	125	ret = enable_irq_wake(irq->start);
	126	if (WARN_ON(ret))
	127	goto err;
	128
	129	/* Request the IRQ */
	130	ret = request_threaded_irq(irq->start, cw1200_gpio_hardirq,
	131	cw1200_gpio_irq,
	132	IRQF_TRIGGER_HIGH \| IRQF_ONESHOT,
	133	irq->name, self);
	134	if (WARN_ON(ret))
	135	goto err;
	136
	137	return 0;
	138
	139	err:
	140	return ret;
	141	}
	142
911373cc	143	static int cw1200_sdio_irq_subscribe(struct hwbus_priv *self)
a910e4a9 SP	144	{
	145	int ret = 0;
	146
	147	pr_debug("SW IRQ subscribe\n");
	148	sdio_claim_host(self->func);
	149	if (self->pdata->irq)
	150	ret = cw1200_request_irq(self);
	151	else
	152	ret = sdio_claim_irq(self->func, cw1200_sdio_irq_handler);
	153
	154	sdio_release_host(self->func);
	155	return ret;
	156	}
	157
911373cc	158	static int cw1200_sdio_irq_unsubscribe(struct hwbus_priv *self)
a910e4a9 SP	159	{
	160	int ret = 0;
	161
	162	pr_debug("SW IRQ unsubscribe\n");
	163
	164	if (self->pdata->irq) {
	165	disable_irq_wake(self->pdata->irq->start);
	166	free_irq(self->pdata->irq->start, self);
	167	} else {
	168	sdio_claim_host(self->func);
	169	ret = sdio_release_irq(self->func);
	170	sdio_release_host(self->func);
	171	}
	172	return ret;
	173	}
	174
	175	static int cw1200_sdio_off(const struct cw1200_platform_data_sdio *pdata)
	176	{
	177	const struct resource *reset = pdata->reset;
	178
	179	if (reset) {
	180	gpio_set_value(reset->start, 0);
	181	msleep(30); /* Min is 2 * CLK32K cycles */
	182	gpio_free(reset->start);
	183	}
	184
	185	if (pdata->power_ctrl)
	186	pdata->power_ctrl(pdata, false);
	187	if (pdata->clk_ctrl)
	188	pdata->clk_ctrl(pdata, false);
	189
	190	return 0;
	191	}
	192
	193	static int cw1200_sdio_on(const struct cw1200_platform_data_sdio *pdata)
	194	{
	195	const struct resource *reset = pdata->reset;
7b19bc2c	196	const struct resource *powerup = pdata->powerup;
a910e4a9 SP	197
	198	/* Ensure I/Os are pulled low */
	199	if (reset) {
	200	gpio_request(reset->start, reset->name);
	201	gpio_direction_output(reset->start, 0);
	202	}
	203	if (powerup) {
	204	gpio_request(powerup->start, powerup->name);
	205	gpio_direction_output(powerup->start, 0);
	206	}
	207	if (reset \|\| powerup)
	208	msleep(50); /* Settle time */
	209
	210	/* Enable 3v3 and 1v8 to hardware */
	211	if (pdata->power_ctrl) {
	212	if (pdata->power_ctrl(pdata, true)) {
	213	pr_err("power_ctrl() failed!\n");
	214	return -1;
	215	}
	216	}
	217
	218	/* Enable CLK32K */
	219	if (pdata->clk_ctrl) {
	220	if (pdata->clk_ctrl(pdata, true)) {
	221	pr_err("clk_ctrl() failed!\n");
	222	return -1;
	223	}
	224	msleep(10); /* Delay until clock is stable for 2 cycles */
	225	}
	226
	227	/* Enable POWERUP signal */
	228	if (powerup) {
	229	gpio_set_value(powerup->start, 1);
	230	msleep(250); /* or more..? */
	231	}
	232	/* Enable RSTn signal */
	233	if (reset) {
	234	gpio_set_value(reset->start, 1);
	235	msleep(50); /* Or more..? */
	236	}
	237	return 0;
	238	}
	239
911373cc	240	static size_t cw1200_sdio_align_size(struct hwbus_priv *self, size_t size)
a910e4a9 SP	241	{
	242	if (self->pdata->no_nptb)
	243	size = round_up(size, SDIO_BLOCK_SIZE);
	244	else
	245	size = sdio_align_size(self->func, size);
	246
	247	return size;
	248	}
	249
911373cc	250	static int cw1200_sdio_pm(struct hwbus_priv *self, bool suspend)
a910e4a9 SP	251	{
	252	int ret = 0;
	253
	254	if (self->pdata->irq)
	255	ret = irq_set_irq_wake(self->pdata->irq->start, suspend);
	256	return ret;
	257	}
	258
911373cc SP	259	static struct hwbus_ops cw1200_sdio_hwbus_ops = {
	260	.hwbus_memcpy_fromio = cw1200_sdio_memcpy_fromio,
	261	.hwbus_memcpy_toio = cw1200_sdio_memcpy_toio,
a910e4a9 SP	262	.lock = cw1200_sdio_lock,
	263	.unlock = cw1200_sdio_unlock,
	264	.align_size = cw1200_sdio_align_size,
	265	.power_mgmt = cw1200_sdio_pm,
	266	};
	267
	268	/* Probe Function to be called by SDIO stack when device is discovered */
	269	static int cw1200_sdio_probe(struct sdio_func *func,
	270	const struct sdio_device_id *id)
	271	{
911373cc	272	struct hwbus_priv *self;
a910e4a9 SP	273	int status;
	274
	275	pr_info("cw1200_wlan_sdio: Probe called\n");
	276
	277	/* We are only able to handle the wlan function */
	278	if (func->num != 0x01)
	279	return -ENODEV;
	280
	281	self = kzalloc(sizeof(*self), GFP_KERNEL);
	282	if (!self) {
911373cc	283	pr_err("Can't allocate SDIO hwbus_priv.\n");
a910e4a9 SP	284	return -ENOMEM;
	285	}
	286
	287	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	288
	289	self->pdata = cw1200_get_platform_data();
	290	self->func = func;
	291	sdio_set_drvdata(func, self);
	292	sdio_claim_host(func);
	293	sdio_enable_func(func);
	294	sdio_release_host(func);
	295
	296	status = cw1200_sdio_irq_subscribe(self);
	297
911373cc	298	status = cw1200_core_probe(&cw1200_sdio_hwbus_ops,
a910e4a9 SP	299	self, &func->dev, &self->core,
	300	self->pdata->ref_clk,
	301	self->pdata->macaddr,
	302	self->pdata->sdd_file,
	303	self->pdata->have_5ghz);
	304	if (status) {
	305	cw1200_sdio_irq_unsubscribe(self);
	306	sdio_claim_host(func);
	307	sdio_disable_func(func);
	308	sdio_release_host(func);
	309	sdio_set_drvdata(func, NULL);
	310	kfree(self);
	311	}
	312
	313	return status;
	314	}
	315
	316	/* Disconnect Function to be called by SDIO stack when
	317	* device is disconnected */
	318	static void cw1200_sdio_disconnect(struct sdio_func *func)
	319	{
911373cc	320	struct hwbus_priv *self = sdio_get_drvdata(func);
a910e4a9 SP	321
	322	if (self) {
	323	cw1200_sdio_irq_unsubscribe(self);
	324	if (self->core) {
	325	cw1200_core_release(self->core);
	326	self->core = NULL;
	327	}
	328	sdio_claim_host(func);
	329	sdio_disable_func(func);
	330	sdio_release_host(func);
	331	sdio_set_drvdata(func, NULL);
	332	kfree(self);
	333	}
	334	}
	335
4e17b87e	336	#ifdef CONFIG_PM
a910e4a9 SP	337	static int cw1200_sdio_suspend(struct device *dev)
	338	{
	339	int ret;
	340	struct sdio_func *func = dev_to_sdio_func(dev);
911373cc	341	struct hwbus_priv *self = sdio_get_drvdata(func);
a910e4a9 SP	342
	343	if (!cw1200_can_suspend(self->core))
	344	return -EAGAIN;
	345
	346	/* Notify SDIO that CW1200 will remain powered during suspend */
	347	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	348	if (ret)
	349	pr_err("Error setting SDIO pm flags: %i\n", ret);
	350
	351	return ret;
	352	}
	353
	354	static int cw1200_sdio_resume(struct device *dev)
	355	{
	356	return 0;
	357	}
	358
	359	static const struct dev_pm_ops cw1200_pm_ops = {
	360	.suspend = cw1200_sdio_suspend,
	361	.resume = cw1200_sdio_resume,
	362	};
4e17b87e	363	#endif
a910e4a9 SP	364
	365	static struct sdio_driver sdio_driver = {
	366	.name = "cw1200_wlan_sdio",
	367	.id_table = cw1200_sdio_ids,
	368	.probe = cw1200_sdio_probe,
	369	.remove = cw1200_sdio_disconnect,
4e17b87e	370	#ifdef CONFIG_PM
a910e4a9 SP	371	.drv = {
	372	.pm = &cw1200_pm_ops,
	373	}
4e17b87e	374	#endif
a910e4a9 SP	375	};
	376
	377	/* Init Module function -> Called by insmod */
	378	static int __init cw1200_sdio_init(void)
	379	{
	380	const struct cw1200_platform_data_sdio *pdata;
	381	int ret;
	382
	383	pdata = cw1200_get_platform_data();
	384
	385	if (cw1200_sdio_on(pdata)) {
	386	ret = -1;
	387	goto err;
	388	}
	389
	390	ret = sdio_register_driver(&sdio_driver);
	391	if (ret)
	392	goto err;
	393
	394	return 0;
	395
	396	err:
	397	cw1200_sdio_off(pdata);
	398	return ret;
	399	}
	400
	401	/* Called at Driver Unloading */
	402	static void __exit cw1200_sdio_exit(void)
	403	{
	404	const struct cw1200_platform_data_sdio *pdata;
	405	pdata = cw1200_get_platform_data();
	406	sdio_unregister_driver(&sdio_driver);
	407	cw1200_sdio_off(pdata);
	408	}
	409
	410
	411	module_init(cw1200_sdio_init);
	412	module_exit(cw1200_sdio_exit);