[deliverable/linux.git] / drivers / net / wireless / wl12xx / sdio.c

/*
 * This file is part of wl1271
 *
 * Copyright (C) 2009-2010 Nokia Corporation
 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.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.
 *
 * 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
 *
 */

#include <linux/irq.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/platform_device.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/gpio.h>
#include <linux/wl12xx.h>
#include <linux/pm_runtime.h>

#include "wl12xx.h"
#include "wl12xx_80211.h"
#include "io.h"

#ifndef SDIO_VENDOR_ID_TI
#define SDIO_VENDOR_ID_TI		0x0097
#endif

#ifndef SDIO_DEVICE_ID_TI_WL1271
#define SDIO_DEVICE_ID_TI_WL1271	0x4076
#endif

struct wl12xx_sdio_glue {
	struct device *dev;
	struct platform_device *core;
};

static const struct sdio_device_id wl1271_devices[] __devinitconst = {
	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	{}
};
MODULE_DEVICE_TABLE(sdio, wl1271_devices);

static void wl1271_sdio_set_block_size(struct device *child,
				       unsigned int blksz)
{
	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
	struct sdio_func *func = dev_to_sdio_func(glue->dev);

	sdio_claim_host(func);
	sdio_set_block_size(func, blksz);
	sdio_release_host(func);
}

static void wl12xx_sdio_raw_read(struct device *child, int addr, void *buf,
				 size_t len, bool fixed)
{
	int ret;
	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
	struct sdio_func *func = dev_to_sdio_func(glue->dev);

	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
		((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
		dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
			addr, ((u8 *)buf)[0]);
	} else {
		if (fixed)
			ret = sdio_readsb(func, buf, addr, len);
		else
			ret = sdio_memcpy_fromio(func, buf, addr, len);

		dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
			addr, len);
	}

	if (ret)
		dev_err(child->parent, "sdio read failed (%d)\n", ret);
}

static void wl12xx_sdio_raw_write(struct device *child, int addr, void *buf,
				  size_t len, bool fixed)
{
	int ret;
	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
	struct sdio_func *func = dev_to_sdio_func(glue->dev);

	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
		sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
		dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
			addr, ((u8 *)buf)[0]);
	} else {
		dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
			addr, len);

		if (fixed)
			ret = sdio_writesb(func, addr, buf, len);
		else
			ret = sdio_memcpy_toio(func, addr, buf, len);
	}

	if (ret)
		dev_err(child->parent, "sdio write failed (%d)\n", ret);
}

static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
{
	int ret;
	struct sdio_func *func = dev_to_sdio_func(glue->dev);

	/* If enabled, tell runtime PM not to power off the card */
	if (pm_runtime_enabled(&func->dev)) {
		ret = pm_runtime_get_sync(&func->dev);
		if (ret < 0)
			goto out;
	} else {
		/* Runtime PM is disabled: power up the card manually */
		ret = mmc_power_restore_host(func->card->host);
		if (ret < 0)
			goto out;
	}

	sdio_claim_host(func);
	sdio_enable_func(func);

out:
	return ret;
}

static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
{
	int ret;
	struct sdio_func *func = dev_to_sdio_func(glue->dev);

	sdio_disable_func(func);
	sdio_release_host(func);

	/* Power off the card manually, even if runtime PM is enabled. */
	ret = mmc_power_save_host(func->card->host);
	if (ret < 0)
		return ret;

	/* If enabled, let runtime PM know the card is powered off */
	if (pm_runtime_enabled(&func->dev))
		ret = pm_runtime_put_sync(&func->dev);

	return ret;
}

static int wl12xx_sdio_set_power(struct device *child, bool enable)
{
	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);

	if (enable)
		return wl12xx_sdio_power_on(glue);
	else
		return wl12xx_sdio_power_off(glue);
}

static struct wl1271_if_operations sdio_ops = {
	.read		= wl12xx_sdio_raw_read,
	.write		= wl12xx_sdio_raw_write,
	.power		= wl12xx_sdio_set_power,
	.set_block_size = wl1271_sdio_set_block_size,
};

static int __devinit wl1271_probe(struct sdio_func *func,
				  const struct sdio_device_id *id)
{
	struct wl12xx_platform_data *wlan_data;
	struct wl12xx_sdio_glue *glue;
	struct resource res[1];
	mmc_pm_flag_t mmcflags;
	int ret = -ENOMEM;

	/* We are only able to handle the wlan function */
	if (func->num != 0x02)
		return -ENODEV;

	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
	if (!glue) {
		dev_err(&func->dev, "can't allocate glue\n");
		goto out;
	}

	glue->dev = &func->dev;

	/* Grab access to FN0 for ELP reg. */
	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;

	/* Use block mode for transferring over one block size of data */
	func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;

	wlan_data = wl12xx_get_platform_data();
	if (IS_ERR(wlan_data)) {
		ret = PTR_ERR(wlan_data);
		dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
		goto out_free_glue;
	}

	/* if sdio can keep power while host is suspended, enable wow */
	mmcflags = sdio_get_host_pm_caps(func);
	dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);

	if (mmcflags & MMC_PM_KEEP_POWER)
		wlan_data->pwr_in_suspend = true;

	wlan_data->ops = &sdio_ops;

	sdio_set_drvdata(func, glue);

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

	glue->core = platform_device_alloc("wl12xx", -1);
	if (!glue->core) {
		dev_err(glue->dev, "can't allocate platform_device");
		ret = -ENOMEM;
		goto out_free_glue;
	}

	glue->core->dev.parent = &func->dev;

	memset(res, 0x00, sizeof(res));

	res[0].start = wlan_data->irq;
	res[0].flags = IORESOURCE_IRQ;
	res[0].name = "irq";

	ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
	if (ret) {
		dev_err(glue->dev, "can't add resources\n");
		goto out_dev_put;
	}

	ret = platform_device_add_data(glue->core, wlan_data,
				       sizeof(*wlan_data));
	if (ret) {
		dev_err(glue->dev, "can't add platform data\n");
		goto out_dev_put;
	}

	ret = platform_device_add(glue->core);
	if (ret) {
		dev_err(glue->dev, "can't add platform device\n");
		goto out_dev_put;
	}
	return 0;

out_dev_put:
	platform_device_put(glue->core);

out_free_glue:
	kfree(glue);

out:
	return ret;
}

static void __devexit wl1271_remove(struct sdio_func *func)
{
	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);

	/* Undo decrement done above in wl1271_probe */
	pm_runtime_get_noresume(&func->dev);

	platform_device_del(glue->core);
	platform_device_put(glue->core);
	kfree(glue);
}

#ifdef CONFIG_PM
static int wl1271_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 */
	struct sdio_func *func = dev_to_sdio_func(dev);
	struct wl1271 *wl = sdio_get_drvdata(func);
	mmc_pm_flag_t sdio_flags;
	int ret = 0;

	dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
		wl->wow_enabled);

	/* check whether sdio should keep power */
	if (wl->wow_enabled) {
		sdio_flags = sdio_get_host_pm_caps(func);

		if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
			dev_err(dev, "can't keep power while host "
				     "is suspended\n");
			ret = -EINVAL;
			goto out;
		}

		/* keep power while host suspended */
		ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
		if (ret) {
			dev_err(dev, "error while trying to keep power\n");
			goto out;
		}

		/* release host */
		sdio_release_host(func);
	}
out:
	return ret;
}

static int wl1271_resume(struct device *dev)
{
	struct sdio_func *func = dev_to_sdio_func(dev);
	struct wl1271 *wl = sdio_get_drvdata(func);

	dev_dbg(dev, "wl1271 resume\n");
	if (wl->wow_enabled) {
		/* claim back host */
		sdio_claim_host(func);
	}

	return 0;
}

static const struct dev_pm_ops wl1271_sdio_pm_ops = {
	.suspend	= wl1271_suspend,
	.resume		= wl1271_resume,
};
#endif

static struct sdio_driver wl1271_sdio_driver = {
	.name		= "wl1271_sdio",
	.id_table	= wl1271_devices,
	.probe		= wl1271_probe,
	.remove		= __devexit_p(wl1271_remove),
#ifdef CONFIG_PM
	.drv = {
		.pm = &wl1271_sdio_pm_ops,
	},
#endif
};

static int __init wl1271_init(void)
{
	return sdio_register_driver(&wl1271_sdio_driver);
}

static void __exit wl1271_exit(void)
{
	sdio_unregister_driver(&wl1271_sdio_driver);
}

module_init(wl1271_init);
module_exit(wl1271_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
MODULE_FIRMWARE(WL127X_FW_NAME);
MODULE_FIRMWARE(WL128X_FW_NAME);
Commit	Line	Data
5129dffe TP	1	/*
	2	* This file is part of wl1271
	3	*
	4	* Copyright (C) 2009-2010 Nokia Corporation
	5	*
	6	* Contact: Luciano Coelho <luciano.coelho@nokia.com>
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* version 2 as published by the Free Software Foundation.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	20	* 02110-1301 USA
	21	*
	22	*/
	23
	24	#include <linux/irq.h>
	25	#include <linux/module.h>
5129dffe	26	#include <linux/vmalloc.h>
025aef8f	27	#include <linux/platform_device.h>
5129dffe TP	28	#include <linux/mmc/sdio_func.h>
	29	#include <linux/mmc/sdio_ids.h>
	30	#include <linux/mmc/card.h>
11251e7e	31	#include <linux/mmc/host.h>
19b87173	32	#include <linux/gpio.h>
09cecc34	33	#include <linux/wl12xx.h>
00cbb3c5	34	#include <linux/pm_runtime.h>
5129dffe	35
00d20100	36	#include "wl12xx.h"
5129dffe	37	#include "wl12xx_80211.h"
00d20100	38	#include "io.h"
5129dffe	39
5129dffe TP	40	#ifndef SDIO_VENDOR_ID_TI
	41	#define SDIO_VENDOR_ID_TI 0x0097
	42	#endif
	43
	44	#ifndef SDIO_DEVICE_ID_TI_WL1271
	45	#define SDIO_DEVICE_ID_TI_WL1271 0x4076
	46	#endif
	47
fbe936bc FB	48	struct wl12xx_sdio_glue {
fbe936bc FB	49	struct device *dev;
025aef8f	50	struct platform_device *core;
fbe936bc FB	51	};
fbe936bc FB	52
33dd74c7	53	static const struct sdio_device_id wl1271_devices[] __devinitconst = {
5129dffe TP	54	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	55	{}
	56	};
	57	MODULE_DEVICE_TABLE(sdio, wl1271_devices);
	58
a390e85c FB	59	static void wl1271_sdio_set_block_size(struct device *child,
a390e85c FB	60	unsigned int blksz)
a81159ed	61	{
a390e85c FB	62	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
a390e85c FB	63	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	64
a390e85c FB	65	sdio_claim_host(func);
	66	sdio_set_block_size(func, blksz);
	67	sdio_release_host(func);
5129dffe TP	68	}
5129dffe TP	69
a390e85c	70	static void wl12xx_sdio_raw_read(struct device child, int addr, void buf,
a3b8ea75	71	size_t len, bool fixed)
5129dffe TP	72	{
5129dffe TP	73	int ret;
a390e85c	74	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
fbe936bc	75	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	76
5129dffe TP	77	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	78	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
3c4d3868 LC	79	dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	80	addr, ((u8 *)buf)[0]);
5129dffe TP	81	} else {
	82	if (fixed)
	83	ret = sdio_readsb(func, buf, addr, len);
	84	else
	85	ret = sdio_memcpy_fromio(func, buf, addr, len);
	86
3c4d3868 LC	87	dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	88	addr, len);
5129dffe TP	89	}
	90
	91	if (ret)
3c4d3868	92	dev_err(child->parent, "sdio read failed (%d)\n", ret);
5129dffe TP	93	}
5129dffe TP	94
a390e85c	95	static void wl12xx_sdio_raw_write(struct device child, int addr, void buf,
a3b8ea75	96	size_t len, bool fixed)
5129dffe TP	97	{
5129dffe TP	98	int ret;
a390e85c	99	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
fbe936bc	100	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	101
5129dffe TP	102	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	103	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
3c4d3868 LC	104	dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	105	addr, ((u8 *)buf)[0]);
5129dffe	106	} else {
3c4d3868 LC	107	dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	108	addr, len);
5129dffe TP	109
	110	if (fixed)
	111	ret = sdio_writesb(func, addr, buf, len);
	112	else
	113	ret = sdio_memcpy_toio(func, addr, buf, len);
	114	}
49063a0d	115
5129dffe	116	if (ret)
3c4d3868	117	dev_err(child->parent, "sdio write failed (%d)\n", ret);
49063a0d OBC	118	}
49063a0d OBC	119
a390e85c	120	static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
49063a0d	121	{
00cbb3c5	122	int ret;
fbe936bc	123	struct sdio_func *func = dev_to_sdio_func(glue->dev);
00cbb3c5	124
86046da4 OBC	125	/* If enabled, tell runtime PM not to power off the card */
	126	if (pm_runtime_enabled(&func->dev)) {
	127	ret = pm_runtime_get_sync(&func->dev);
a15f1c45	128	if (ret < 0)
86046da4	129	goto out;
b5d6e5f6 OBC	130	} else {
	131	/* Runtime PM is disabled: power up the card manually */
	132	ret = mmc_power_restore_host(func->card->host);
	133	if (ret < 0)
	134	goto out;
86046da4	135	}
5129dffe	136
49063a0d OBC	137	sdio_claim_host(func);
49063a0d OBC	138	sdio_enable_func(func);
2cc78ff7	139
00cbb3c5 OBC	140	out:
00cbb3c5 OBC	141	return ret;
49063a0d OBC	142	}
49063a0d OBC	143
a390e85c	144	static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
49063a0d	145	{
11251e7e	146	int ret;
fbe936bc	147	struct sdio_func *func = dev_to_sdio_func(glue->dev);
49063a0d	148
49063a0d OBC	149	sdio_disable_func(func);
49063a0d OBC	150	sdio_release_host(func);
2cc78ff7	151
b5d6e5f6	152	/* Power off the card manually, even if runtime PM is enabled. */
11251e7e IY	153	ret = mmc_power_save_host(func->card->host);
	154	if (ret < 0)
	155	return ret;
	156
86046da4 OBC	157	/* If enabled, let runtime PM know the card is powered off */
	158	if (pm_runtime_enabled(&func->dev))
	159	ret = pm_runtime_put_sync(&func->dev);
	160
	161	return ret;
5129dffe TP	162	}
5129dffe TP	163
a390e85c	164	static int wl12xx_sdio_set_power(struct device *child, bool enable)
becd551c	165	{
a390e85c FB	166	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
a390e85c FB	167
49063a0d	168	if (enable)
a390e85c	169	return wl12xx_sdio_power_on(glue);
49063a0d	170	else
a390e85c	171	return wl12xx_sdio_power_off(glue);
becd551c TP	172	}
becd551c TP	173
5129dffe	174	static struct wl1271_if_operations sdio_ops = {
a390e85c FB	175	.read = wl12xx_sdio_raw_read,
	176	.write = wl12xx_sdio_raw_write,
	177	.power = wl12xx_sdio_set_power,
a81159ed	178	.set_block_size = wl1271_sdio_set_block_size,
5129dffe TP	179	};
5129dffe TP	180
5129dffe TP	181	static int __devinit wl1271_probe(struct sdio_func *func,
	182	const struct sdio_device_id *id)
	183	{
a390e85c	184	struct wl12xx_platform_data *wlan_data;
fbe936bc	185	struct wl12xx_sdio_glue *glue;
025aef8f	186	struct resource res[1];
f795ea8b	187	mmc_pm_flag_t mmcflags;
fbe936bc	188	int ret = -ENOMEM;
5129dffe TP	189
	190	/* We are only able to handle the wlan function */
	191	if (func->num != 0x02)
	192	return -ENODEV;
	193
fbe936bc FB	194	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
fbe936bc FB	195	if (!glue) {
3c4d3868	196	dev_err(&func->dev, "can't allocate glue\n");
fbe936bc FB	197	goto out;
	198	}
	199
fbe936bc	200	glue->dev = &func->dev;
5129dffe	201
5129dffe TP	202	/* Grab access to FN0 for ELP reg. */
	203	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	204
1d732e8c AN	205	/* Use block mode for transferring over one block size of data */
	206	func->card->quirks \|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
	207
09cecc34 OBC	208	wlan_data = wl12xx_get_platform_data();
	209	if (IS_ERR(wlan_data)) {
	210	ret = PTR_ERR(wlan_data);
3c4d3868	211	dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
a390e85c	212	goto out_free_glue;
5129dffe TP	213	}
5129dffe TP	214
a390e85c FB	215	/* if sdio can keep power while host is suspended, enable wow */
a390e85c FB	216	mmcflags = sdio_get_host_pm_caps(func);
3c4d3868	217	dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
2c0f2463	218
a390e85c FB	219	if (mmcflags & MMC_PM_KEEP_POWER)
a390e85c FB	220	wlan_data->pwr_in_suspend = true;
f795ea8b	221
a390e85c	222	wlan_data->ops = &sdio_ops;
5129dffe	223
fbe936bc	224	sdio_set_drvdata(func, glue);
49d7f6d8	225
00cbb3c5 OBC	226	/* Tell PM core that we don't need the card to be powered now */
	227	pm_runtime_put_noidle(&func->dev);
	228
ccb62000	229	glue->core = platform_device_alloc("wl12xx", -1);
025aef8f	230	if (!glue->core) {
3c4d3868	231	dev_err(glue->dev, "can't allocate platform_device");
025aef8f	232	ret = -ENOMEM;
a390e85c	233	goto out_free_glue;
025aef8f FB	234	}
	235
	236	glue->core->dev.parent = &func->dev;
	237
	238	memset(res, 0x00, sizeof(res));
	239
	240	res[0].start = wlan_data->irq;
	241	res[0].flags = IORESOURCE_IRQ;
	242	res[0].name = "irq";
	243
	244	ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
	245	if (ret) {
3c4d3868	246	dev_err(glue->dev, "can't add resources\n");
025aef8f FB	247	goto out_dev_put;
	248	}
	249
	250	ret = platform_device_add_data(glue->core, wlan_data,
	251	sizeof(*wlan_data));
	252	if (ret) {
3c4d3868	253	dev_err(glue->dev, "can't add platform data\n");
025aef8f FB	254	goto out_dev_put;
	255	}
	256
	257	ret = platform_device_add(glue->core);
	258	if (ret) {
3c4d3868	259	dev_err(glue->dev, "can't add platform device\n");
025aef8f FB	260	goto out_dev_put;
025aef8f FB	261	}
5129dffe TP	262	return 0;
5129dffe TP	263
025aef8f FB	264	out_dev_put:
	265	platform_device_put(glue->core);
	266
fbe936bc FB	267	out_free_glue:
fbe936bc FB	268	kfree(glue);
a390e85c	269
fbe936bc	270	out:
5129dffe TP	271	return ret;
	272	}
	273
	274	static void __devexit wl1271_remove(struct sdio_func *func)
	275	{
fbe936bc	276	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
5129dffe	277
00cbb3c5 OBC	278	/* Undo decrement done above in wl1271_probe */
	279	pm_runtime_get_noresume(&func->dev);
	280
025aef8f FB	281	platform_device_del(glue->core);
025aef8f FB	282	platform_device_put(glue->core);
fbe936bc	283	kfree(glue);
5129dffe TP	284	}
5129dffe TP	285
f634a4e7	286	#ifdef CONFIG_PM
674f3058 OBC	287	static int wl1271_suspend(struct device *dev)
	288	{
	289	/* Tell MMC/SDIO core it's OK to power down the card
	290	* (if it isn't already), but not to remove it completely */
039bdb14 EP	291	struct sdio_func *func = dev_to_sdio_func(dev);
	292	struct wl1271 *wl = sdio_get_drvdata(func);
	293	mmc_pm_flag_t sdio_flags;
	294	int ret = 0;
	295
3c4d3868 LC	296	dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
3c4d3868 LC	297	wl->wow_enabled);
039bdb14 EP	298
	299	/* check whether sdio should keep power */
	300	if (wl->wow_enabled) {
	301	sdio_flags = sdio_get_host_pm_caps(func);
	302
	303	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
3c4d3868 LC	304	dev_err(dev, "can't keep power while host "
3c4d3868 LC	305	"is suspended\n");
039bdb14 EP	306	ret = -EINVAL;
	307	goto out;
	308	}
	309
	310	/* keep power while host suspended */
	311	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	312	if (ret) {
3c4d3868	313	dev_err(dev, "error while trying to keep power\n");
039bdb14 EP	314	goto out;
039bdb14 EP	315	}
f44e5868 EP	316
	317	/* release host */
	318	sdio_release_host(func);
039bdb14 EP	319	}
	320	out:
	321	return ret;
674f3058 OBC	322	}
	323
	324	static int wl1271_resume(struct device *dev)
	325	{
f44e5868 EP	326	struct sdio_func *func = dev_to_sdio_func(dev);
	327	struct wl1271 *wl = sdio_get_drvdata(func);
	328
3c4d3868	329	dev_dbg(dev, "wl1271 resume\n");
f44e5868 EP	330	if (wl->wow_enabled) {
	331	/* claim back host */
	332	sdio_claim_host(func);
	333	}
	334
674f3058 OBC	335	return 0;
	336	}
	337
	338	static const struct dev_pm_ops wl1271_sdio_pm_ops = {
	339	.suspend = wl1271_suspend,
	340	.resume = wl1271_resume,
	341	};
f634a4e7	342	#endif
674f3058	343
5129dffe	344	static struct sdio_driver wl1271_sdio_driver = {
f4b5d8d8	345	.name = "wl1271_sdio",
5129dffe TP	346	.id_table = wl1271_devices,
	347	.probe = wl1271_probe,
	348	.remove = __devexit_p(wl1271_remove),
f634a4e7	349	#ifdef CONFIG_PM
674f3058 OBC	350	.drv = {
	351	.pm = &wl1271_sdio_pm_ops,
	352	},
f634a4e7	353	#endif
5129dffe TP	354	};
	355
	356	static int __init wl1271_init(void)
	357	{
6bdaf796	358	return sdio_register_driver(&wl1271_sdio_driver);
5129dffe TP	359	}
	360
	361	static void __exit wl1271_exit(void)
	362	{
	363	sdio_unregister_driver(&wl1271_sdio_driver);
5129dffe TP	364	}
	365
	366	module_init(wl1271_init);
	367	module_exit(wl1271_exit);
	368
	369	MODULE_LICENSE("GPL");
5245e3a9	370	MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
5129dffe	371	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
c302b2c9	372	MODULE_FIRMWARE(WL127X_FW_NAME);
5aa42346	373	MODULE_FIRMWARE(WL128X_FW_NAME);