[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/net-cw1200.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)

/* Default platform data for Sagrad modules */
static struct cw1200_platform_data_sdio sagrad_109x_evk_platform_data = {
	.ref_clk = 38400,
	.have_5ghz = false,
	.sdd_file = "sdd_sagrad_1091_1098.bin",
};

/* Allow platform data to be overridden */
static struct cw1200_platform_data_sdio *global_plat_data = &sagrad_109x_evk_platform_data;

void __init cw1200_sdio_set_platform_data(struct cw1200_platform_data_sdio *pdata)
{
	global_plat_data = pdata;
}

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;
	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(self->pdata->irq);
	if (WARN_ON(ret))
		goto err;

	/* Request the IRQ */
	ret =  request_threaded_irq(self->pdata->irq, cw1200_gpio_hardirq,
				    cw1200_gpio_irq,
				    IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
				    "cw1200_wlan_irq", 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);
		free_irq(self->pdata->irq, 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)
{
	if (pdata->reset) {
		gpio_set_value(pdata->reset, 0);
		msleep(30); /* Min is 2 * CLK32K cycles */
		gpio_free(pdata->reset);
	}

	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)
{
	/* Ensure I/Os are pulled low */
	if (pdata->reset) {
		gpio_request(pdata->reset, "cw1200_wlan_reset");
		gpio_direction_output(pdata->reset, 0);
	}
	if (pdata->powerup) {
		gpio_request(pdata->powerup, "cw1200_wlan_powerup");
		gpio_direction_output(pdata->powerup, 0);
	}
	if (pdata->reset || pdata->powerup)
		msleep(10); /* 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 (pdata->powerup) {
		gpio_set_value(pdata->powerup, 1);
		msleep(250); /* or more..? */
	}
	/* Enable RSTn signal */
	if (pdata->reset) {
		gpio_set_value(pdata->reset, 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, 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 = global_plat_data; /* FIXME */
	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;

	/* FIXME -- this won't support multiple devices */
	pdata = global_plat_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;

	/* FIXME -- this won't support multiple devices */
	pdata = global_plat_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"
4da2a54a	23	#include <linux/platform_data/net-cw1200.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
7c0b6f49 SP	32	/* Default platform data for Sagrad modules */
	33	static struct cw1200_platform_data_sdio sagrad_109x_evk_platform_data = {
	34	.ref_clk = 38400,
	35	.have_5ghz = false,
	36	.sdd_file = "sdd_sagrad_1091_1098.bin",
	37	};
	38
	39	/* Allow platform data to be overridden */
	40	static struct cw1200_platform_data_sdio *global_plat_data = &sagrad_109x_evk_platform_data;
	41
	42	void __init cw1200_sdio_set_platform_data(struct cw1200_platform_data_sdio *pdata)
	43	{
	44	global_plat_data = pdata;
	45	}
	46
911373cc	47	struct hwbus_priv {
a910e4a9 SP	48	struct sdio_func *func;
	49	struct cw1200_common *core;
	50	const struct cw1200_platform_data_sdio *pdata;
	51	};
	52
	53	#ifndef SDIO_VENDOR_ID_STE
	54	#define SDIO_VENDOR_ID_STE 0x0020
	55	#endif
	56
	57	#ifndef SDIO_DEVICE_ID_STE_CW1200
	58	#define SDIO_DEVICE_ID_STE_CW1200 0x2280
	59	#endif
	60
	61	static const struct sdio_device_id cw1200_sdio_ids[] = {
	62	{ SDIO_DEVICE(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200) },
	63	{ /* end: all zeroes */ },
	64	};
	65
911373cc	66	/* hwbus_ops implemetation */
a910e4a9	67
911373cc	68	static int cw1200_sdio_memcpy_fromio(struct hwbus_priv *self,
a910e4a9 SP	69	unsigned int addr,
	70	void *dst, int count)
	71	{
	72	return sdio_memcpy_fromio(self->func, dst, addr, count);
	73	}
	74
911373cc	75	static int cw1200_sdio_memcpy_toio(struct hwbus_priv *self,
a910e4a9 SP	76	unsigned int addr,
	77	const void *src, int count)
	78	{
	79	return sdio_memcpy_toio(self->func, addr, (void *)src, count);
	80	}
	81
911373cc	82	static void cw1200_sdio_lock(struct hwbus_priv *self)
a910e4a9 SP	83	{
	84	sdio_claim_host(self->func);
	85	}
	86
911373cc	87	static void cw1200_sdio_unlock(struct hwbus_priv *self)
a910e4a9 SP	88	{
	89	sdio_release_host(self->func);
	90	}
	91
	92	static void cw1200_sdio_irq_handler(struct sdio_func *func)
	93	{
911373cc	94	struct hwbus_priv *self = sdio_get_drvdata(func);
a910e4a9 SP	95
	96	/* note: sdio_host already claimed here. */
	97	if (self->core)
	98	cw1200_irq_handler(self->core);
	99	}
	100
	101	static irqreturn_t cw1200_gpio_hardirq(int irq, void *dev_id)
	102	{
	103	return IRQ_WAKE_THREAD;
	104	}
	105
	106	static irqreturn_t cw1200_gpio_irq(int irq, void *dev_id)
	107	{
911373cc	108	struct hwbus_priv *self = dev_id;
a910e4a9 SP	109
	110	if (self->core) {
	111	sdio_claim_host(self->func);
	112	cw1200_irq_handler(self->core);
	113	sdio_release_host(self->func);
	114	return IRQ_HANDLED;
	115	} else {
	116	return IRQ_NONE;
	117	}
	118	}
	119
911373cc	120	static int cw1200_request_irq(struct hwbus_priv *self)
a910e4a9 SP	121	{
a910e4a9 SP	122	int ret;
a910e4a9 SP	123	u8 cccr;
	124
	125	cccr = sdio_f0_readb(self->func, SDIO_CCCR_IENx, &ret);
	126	if (WARN_ON(ret))
	127	goto err;
	128
	129	/* Master interrupt enable ... */
	130	cccr \|= BIT(0);
	131
	132	/* ... for our function */
	133	cccr \|= BIT(self->func->num);
	134
	135	sdio_f0_writeb(self->func, cccr, SDIO_CCCR_IENx, &ret);
	136	if (WARN_ON(ret))
	137	goto err;
	138
6dd64a30	139	ret = enable_irq_wake(self->pdata->irq);
a910e4a9 SP	140	if (WARN_ON(ret))
	141	goto err;
	142
	143	/* Request the IRQ */
6dd64a30	144	ret = request_threaded_irq(self->pdata->irq, cw1200_gpio_hardirq,
a910e4a9 SP	145	cw1200_gpio_irq,
a910e4a9 SP	146	IRQF_TRIGGER_HIGH \| IRQF_ONESHOT,
6dd64a30	147	"cw1200_wlan_irq", self);
a910e4a9 SP	148	if (WARN_ON(ret))
	149	goto err;
	150
	151	return 0;
	152
	153	err:
	154	return ret;
	155	}
	156
911373cc	157	static int cw1200_sdio_irq_subscribe(struct hwbus_priv *self)
a910e4a9 SP	158	{
	159	int ret = 0;
	160
	161	pr_debug("SW IRQ subscribe\n");
	162	sdio_claim_host(self->func);
	163	if (self->pdata->irq)
	164	ret = cw1200_request_irq(self);
	165	else
	166	ret = sdio_claim_irq(self->func, cw1200_sdio_irq_handler);
	167
	168	sdio_release_host(self->func);
	169	return ret;
	170	}
	171
911373cc	172	static int cw1200_sdio_irq_unsubscribe(struct hwbus_priv *self)
a910e4a9 SP	173	{
	174	int ret = 0;
	175
	176	pr_debug("SW IRQ unsubscribe\n");
	177
	178	if (self->pdata->irq) {
6dd64a30 SP	179	disable_irq_wake(self->pdata->irq);
6dd64a30 SP	180	free_irq(self->pdata->irq, self);
a910e4a9 SP	181	} else {
	182	sdio_claim_host(self->func);
	183	ret = sdio_release_irq(self->func);
	184	sdio_release_host(self->func);
	185	}
	186	return ret;
	187	}
	188
	189	static int cw1200_sdio_off(const struct cw1200_platform_data_sdio *pdata)
	190	{
6dd64a30 SP	191	if (pdata->reset) {
6dd64a30 SP	192	gpio_set_value(pdata->reset, 0);
a910e4a9	193	msleep(30); /* Min is 2 * CLK32K cycles */
6dd64a30	194	gpio_free(pdata->reset);
a910e4a9 SP	195	}
	196
	197	if (pdata->power_ctrl)
	198	pdata->power_ctrl(pdata, false);
	199	if (pdata->clk_ctrl)
	200	pdata->clk_ctrl(pdata, false);
	201
	202	return 0;
	203	}
	204
	205	static int cw1200_sdio_on(const struct cw1200_platform_data_sdio *pdata)
	206	{
a910e4a9	207	/* Ensure I/Os are pulled low */
6dd64a30 SP	208	if (pdata->reset) {
	209	gpio_request(pdata->reset, "cw1200_wlan_reset");
	210	gpio_direction_output(pdata->reset, 0);
a910e4a9	211	}
6dd64a30 SP	212	if (pdata->powerup) {
	213	gpio_request(pdata->powerup, "cw1200_wlan_powerup");
	214	gpio_direction_output(pdata->powerup, 0);
a910e4a9	215	}
6dd64a30 SP	216	if (pdata->reset \|\| pdata->powerup)
6dd64a30 SP	217	msleep(10); /* Settle time? */
a910e4a9 SP	218
	219	/* Enable 3v3 and 1v8 to hardware */
	220	if (pdata->power_ctrl) {
	221	if (pdata->power_ctrl(pdata, true)) {
	222	pr_err("power_ctrl() failed!\n");
	223	return -1;
	224	}
	225	}
	226
	227	/* Enable CLK32K */
	228	if (pdata->clk_ctrl) {
	229	if (pdata->clk_ctrl(pdata, true)) {
	230	pr_err("clk_ctrl() failed!\n");
	231	return -1;
	232	}
	233	msleep(10); /* Delay until clock is stable for 2 cycles */
	234	}
	235
	236	/* Enable POWERUP signal */
6dd64a30 SP	237	if (pdata->powerup) {
6dd64a30 SP	238	gpio_set_value(pdata->powerup, 1);
a910e4a9 SP	239	msleep(250); /* or more..? */
	240	}
	241	/* Enable RSTn signal */
6dd64a30 SP	242	if (pdata->reset) {
6dd64a30 SP	243	gpio_set_value(pdata->reset, 1);
a910e4a9 SP	244	msleep(50); /* Or more..? */
	245	}
	246	return 0;
	247	}
	248
911373cc	249	static size_t cw1200_sdio_align_size(struct hwbus_priv *self, size_t size)
a910e4a9 SP	250	{
	251	if (self->pdata->no_nptb)
	252	size = round_up(size, SDIO_BLOCK_SIZE);
	253	else
	254	size = sdio_align_size(self->func, size);
	255
	256	return size;
	257	}
	258
911373cc	259	static int cw1200_sdio_pm(struct hwbus_priv *self, bool suspend)
a910e4a9 SP	260	{
	261	int ret = 0;
	262
	263	if (self->pdata->irq)
6dd64a30	264	ret = irq_set_irq_wake(self->pdata->irq, suspend);
a910e4a9 SP	265	return ret;
	266	}
	267
911373cc SP	268	static struct hwbus_ops cw1200_sdio_hwbus_ops = {
	269	.hwbus_memcpy_fromio = cw1200_sdio_memcpy_fromio,
	270	.hwbus_memcpy_toio = cw1200_sdio_memcpy_toio,
a910e4a9 SP	271	.lock = cw1200_sdio_lock,
	272	.unlock = cw1200_sdio_unlock,
	273	.align_size = cw1200_sdio_align_size,
	274	.power_mgmt = cw1200_sdio_pm,
	275	};
	276
	277	/* Probe Function to be called by SDIO stack when device is discovered */
	278	static int cw1200_sdio_probe(struct sdio_func *func,
7c0b6f49	279	const struct sdio_device_id *id)
a910e4a9	280	{
911373cc	281	struct hwbus_priv *self;
a910e4a9 SP	282	int status;
	283
	284	pr_info("cw1200_wlan_sdio: Probe called\n");
	285
6dd64a30	286	/* We are only able to handle the wlan function */
a910e4a9 SP	287	if (func->num != 0x01)
	288	return -ENODEV;
	289
	290	self = kzalloc(sizeof(*self), GFP_KERNEL);
	291	if (!self) {
911373cc	292	pr_err("Can't allocate SDIO hwbus_priv.\n");
a910e4a9 SP	293	return -ENOMEM;
	294	}
	295
	296	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	297
7c0b6f49	298	self->pdata = global_plat_data; /* FIXME */
a910e4a9 SP	299	self->func = func;
	300	sdio_set_drvdata(func, self);
	301	sdio_claim_host(func);
	302	sdio_enable_func(func);
	303	sdio_release_host(func);
	304
	305	status = cw1200_sdio_irq_subscribe(self);
	306
911373cc	307	status = cw1200_core_probe(&cw1200_sdio_hwbus_ops,
a910e4a9 SP	308	self, &func->dev, &self->core,
	309	self->pdata->ref_clk,
	310	self->pdata->macaddr,
	311	self->pdata->sdd_file,
	312	self->pdata->have_5ghz);
	313	if (status) {
	314	cw1200_sdio_irq_unsubscribe(self);
	315	sdio_claim_host(func);
	316	sdio_disable_func(func);
	317	sdio_release_host(func);
	318	sdio_set_drvdata(func, NULL);
	319	kfree(self);
	320	}
	321
	322	return status;
	323	}
	324
	325	/* Disconnect Function to be called by SDIO stack when
8b3e7be4 SP	326	* device is disconnected
8b3e7be4 SP	327	*/
a910e4a9 SP	328	static void cw1200_sdio_disconnect(struct sdio_func *func)
a910e4a9 SP	329	{
911373cc	330	struct hwbus_priv *self = sdio_get_drvdata(func);
a910e4a9 SP	331
	332	if (self) {
	333	cw1200_sdio_irq_unsubscribe(self);
	334	if (self->core) {
	335	cw1200_core_release(self->core);
	336	self->core = NULL;
	337	}
	338	sdio_claim_host(func);
	339	sdio_disable_func(func);
	340	sdio_release_host(func);
	341	sdio_set_drvdata(func, NULL);
	342	kfree(self);
	343	}
	344	}
	345
4e17b87e	346	#ifdef CONFIG_PM
a910e4a9 SP	347	static int cw1200_sdio_suspend(struct device *dev)
	348	{
	349	int ret;
	350	struct sdio_func *func = dev_to_sdio_func(dev);
911373cc	351	struct hwbus_priv *self = sdio_get_drvdata(func);
a910e4a9 SP	352
	353	if (!cw1200_can_suspend(self->core))
	354	return -EAGAIN;
	355
	356	/* Notify SDIO that CW1200 will remain powered during suspend */
	357	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	358	if (ret)
	359	pr_err("Error setting SDIO pm flags: %i\n", ret);
	360
	361	return ret;
	362	}
	363
	364	static int cw1200_sdio_resume(struct device *dev)
	365	{
	366	return 0;
	367	}
	368
	369	static const struct dev_pm_ops cw1200_pm_ops = {
	370	.suspend = cw1200_sdio_suspend,
	371	.resume = cw1200_sdio_resume,
	372	};
4e17b87e	373	#endif
a910e4a9 SP	374
	375	static struct sdio_driver sdio_driver = {
	376	.name = "cw1200_wlan_sdio",
	377	.id_table = cw1200_sdio_ids,
	378	.probe = cw1200_sdio_probe,
	379	.remove = cw1200_sdio_disconnect,
4e17b87e	380	#ifdef CONFIG_PM
a910e4a9 SP	381	.drv = {
	382	.pm = &cw1200_pm_ops,
	383	}
4e17b87e	384	#endif
a910e4a9 SP	385	};
	386
	387	/* Init Module function -> Called by insmod */
	388	static int __init cw1200_sdio_init(void)
	389	{
	390	const struct cw1200_platform_data_sdio *pdata;
	391	int ret;
	392
7c0b6f49 SP	393	/* FIXME -- this won't support multiple devices */
7c0b6f49 SP	394	pdata = global_plat_data;
a910e4a9 SP	395
	396	if (cw1200_sdio_on(pdata)) {
	397	ret = -1;
	398	goto err;
	399	}
	400
	401	ret = sdio_register_driver(&sdio_driver);
	402	if (ret)
	403	goto err;
	404
	405	return 0;
	406
	407	err:
	408	cw1200_sdio_off(pdata);
	409	return ret;
	410	}
	411
	412	/* Called at Driver Unloading */
	413	static void __exit cw1200_sdio_exit(void)
	414	{
	415	const struct cw1200_platform_data_sdio *pdata;
7c0b6f49 SP	416
	417	/* FIXME -- this won't support multiple devices */
	418	pdata = global_plat_data;
a910e4a9 SP	419	sdio_unregister_driver(&sdio_driver);
	420	cw1200_sdio_off(pdata);
	421	}
	422
	423
	424	module_init(cw1200_sdio_init);
	425	module_exit(cw1200_sdio_exit);