[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);

	sdio_claim_host(func);

	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);
	}

	sdio_release_host(func);

	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);

	sdio_claim_host(func);

	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);
	}

	sdio_release_host(func);

	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);
	sdio_release_host(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_claim_host(func);
	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 wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
	struct wl1271 *wl = platform_get_drvdata(glue->core);
	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;
		}
	}
out:
	return ret;
}

static int wl1271_resume(struct device *dev)
{
	dev_dbg(dev, "wl1271 resume\n");

	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
b4748306 EP	77	sdio_claim_host(func);
b4748306 EP	78
5129dffe TP	79	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	80	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
3c4d3868 LC	81	dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	82	addr, ((u8 *)buf)[0]);
5129dffe TP	83	} else {
	84	if (fixed)
	85	ret = sdio_readsb(func, buf, addr, len);
	86	else
	87	ret = sdio_memcpy_fromio(func, buf, addr, len);
	88
3c4d3868 LC	89	dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	90	addr, len);
5129dffe TP	91	}
5129dffe TP	92
b4748306 EP	93	sdio_release_host(func);
b4748306 EP	94
5129dffe	95	if (ret)
3c4d3868	96	dev_err(child->parent, "sdio read failed (%d)\n", ret);
5129dffe TP	97	}
5129dffe TP	98
a390e85c	99	static void wl12xx_sdio_raw_write(struct device child, int addr, void buf,
a3b8ea75	100	size_t len, bool fixed)
5129dffe TP	101	{
5129dffe TP	102	int ret;
a390e85c	103	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
fbe936bc	104	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	105
b4748306 EP	106	sdio_claim_host(func);
b4748306 EP	107
5129dffe TP	108	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	109	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
3c4d3868 LC	110	dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	111	addr, ((u8 *)buf)[0]);
5129dffe	112	} else {
3c4d3868 LC	113	dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	114	addr, len);
5129dffe TP	115
	116	if (fixed)
	117	ret = sdio_writesb(func, addr, buf, len);
	118	else
	119	ret = sdio_memcpy_toio(func, addr, buf, len);
	120	}
49063a0d	121
b4748306 EP	122	sdio_release_host(func);
b4748306 EP	123
5129dffe	124	if (ret)
3c4d3868	125	dev_err(child->parent, "sdio write failed (%d)\n", ret);
49063a0d OBC	126	}
49063a0d OBC	127
a390e85c	128	static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
49063a0d	129	{
00cbb3c5	130	int ret;
fbe936bc	131	struct sdio_func *func = dev_to_sdio_func(glue->dev);
00cbb3c5	132
86046da4 OBC	133	/* If enabled, tell runtime PM not to power off the card */
	134	if (pm_runtime_enabled(&func->dev)) {
	135	ret = pm_runtime_get_sync(&func->dev);
a15f1c45	136	if (ret < 0)
86046da4	137	goto out;
b5d6e5f6 OBC	138	} else {
	139	/* Runtime PM is disabled: power up the card manually */
	140	ret = mmc_power_restore_host(func->card->host);
	141	if (ret < 0)
	142	goto out;
86046da4	143	}
5129dffe	144
49063a0d OBC	145	sdio_claim_host(func);
49063a0d OBC	146	sdio_enable_func(func);
b4748306	147	sdio_release_host(func);
2cc78ff7	148
00cbb3c5 OBC	149	out:
00cbb3c5 OBC	150	return ret;
49063a0d OBC	151	}
49063a0d OBC	152
a390e85c	153	static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
49063a0d	154	{
11251e7e	155	int ret;
fbe936bc	156	struct sdio_func *func = dev_to_sdio_func(glue->dev);
49063a0d	157
b4748306	158	sdio_claim_host(func);
49063a0d OBC	159	sdio_disable_func(func);
49063a0d OBC	160	sdio_release_host(func);
2cc78ff7	161
b5d6e5f6	162	/* Power off the card manually, even if runtime PM is enabled. */
11251e7e IY	163	ret = mmc_power_save_host(func->card->host);
	164	if (ret < 0)
	165	return ret;
	166
86046da4 OBC	167	/* If enabled, let runtime PM know the card is powered off */
	168	if (pm_runtime_enabled(&func->dev))
	169	ret = pm_runtime_put_sync(&func->dev);
	170
	171	return ret;
5129dffe TP	172	}
5129dffe TP	173
a390e85c	174	static int wl12xx_sdio_set_power(struct device *child, bool enable)
becd551c	175	{
a390e85c FB	176	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
a390e85c FB	177
49063a0d	178	if (enable)
a390e85c	179	return wl12xx_sdio_power_on(glue);
49063a0d	180	else
a390e85c	181	return wl12xx_sdio_power_off(glue);
becd551c TP	182	}
becd551c TP	183
5129dffe	184	static struct wl1271_if_operations sdio_ops = {
a390e85c FB	185	.read = wl12xx_sdio_raw_read,
	186	.write = wl12xx_sdio_raw_write,
	187	.power = wl12xx_sdio_set_power,
a81159ed	188	.set_block_size = wl1271_sdio_set_block_size,
5129dffe TP	189	};
5129dffe TP	190
5129dffe TP	191	static int __devinit wl1271_probe(struct sdio_func *func,
	192	const struct sdio_device_id *id)
	193	{
a390e85c	194	struct wl12xx_platform_data *wlan_data;
fbe936bc	195	struct wl12xx_sdio_glue *glue;
025aef8f	196	struct resource res[1];
f795ea8b	197	mmc_pm_flag_t mmcflags;
fbe936bc	198	int ret = -ENOMEM;
5129dffe TP	199
	200	/* We are only able to handle the wlan function */
	201	if (func->num != 0x02)
	202	return -ENODEV;
	203
fbe936bc FB	204	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
fbe936bc FB	205	if (!glue) {
3c4d3868	206	dev_err(&func->dev, "can't allocate glue\n");
fbe936bc FB	207	goto out;
	208	}
	209
fbe936bc	210	glue->dev = &func->dev;
5129dffe	211
5129dffe TP	212	/* Grab access to FN0 for ELP reg. */
	213	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	214
1d732e8c AN	215	/* Use block mode for transferring over one block size of data */
	216	func->card->quirks \|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
	217
09cecc34 OBC	218	wlan_data = wl12xx_get_platform_data();
	219	if (IS_ERR(wlan_data)) {
	220	ret = PTR_ERR(wlan_data);
3c4d3868	221	dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
a390e85c	222	goto out_free_glue;
5129dffe TP	223	}
5129dffe TP	224
a390e85c FB	225	/* if sdio can keep power while host is suspended, enable wow */
a390e85c FB	226	mmcflags = sdio_get_host_pm_caps(func);
3c4d3868	227	dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
2c0f2463	228
a390e85c FB	229	if (mmcflags & MMC_PM_KEEP_POWER)
a390e85c FB	230	wlan_data->pwr_in_suspend = true;
f795ea8b	231
a390e85c	232	wlan_data->ops = &sdio_ops;
5129dffe	233
fbe936bc	234	sdio_set_drvdata(func, glue);
49d7f6d8	235
00cbb3c5 OBC	236	/* Tell PM core that we don't need the card to be powered now */
	237	pm_runtime_put_noidle(&func->dev);
	238
ccb62000	239	glue->core = platform_device_alloc("wl12xx", -1);
025aef8f	240	if (!glue->core) {
3c4d3868	241	dev_err(glue->dev, "can't allocate platform_device");
025aef8f	242	ret = -ENOMEM;
a390e85c	243	goto out_free_glue;
025aef8f FB	244	}
	245
	246	glue->core->dev.parent = &func->dev;
	247
	248	memset(res, 0x00, sizeof(res));
	249
	250	res[0].start = wlan_data->irq;
	251	res[0].flags = IORESOURCE_IRQ;
	252	res[0].name = "irq";
	253
	254	ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
	255	if (ret) {
3c4d3868	256	dev_err(glue->dev, "can't add resources\n");
025aef8f FB	257	goto out_dev_put;
	258	}
	259
	260	ret = platform_device_add_data(glue->core, wlan_data,
	261	sizeof(*wlan_data));
	262	if (ret) {
3c4d3868	263	dev_err(glue->dev, "can't add platform data\n");
025aef8f FB	264	goto out_dev_put;
	265	}
	266
	267	ret = platform_device_add(glue->core);
	268	if (ret) {
3c4d3868	269	dev_err(glue->dev, "can't add platform device\n");
025aef8f FB	270	goto out_dev_put;
025aef8f FB	271	}
5129dffe TP	272	return 0;
5129dffe TP	273
025aef8f FB	274	out_dev_put:
	275	platform_device_put(glue->core);
	276
fbe936bc FB	277	out_free_glue:
fbe936bc FB	278	kfree(glue);
a390e85c	279
fbe936bc	280	out:
5129dffe TP	281	return ret;
	282	}
	283
	284	static void __devexit wl1271_remove(struct sdio_func *func)
	285	{
fbe936bc	286	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
5129dffe	287
00cbb3c5 OBC	288	/* Undo decrement done above in wl1271_probe */
	289	pm_runtime_get_noresume(&func->dev);
	290
025aef8f FB	291	platform_device_del(glue->core);
025aef8f FB	292	platform_device_put(glue->core);
fbe936bc	293	kfree(glue);
5129dffe TP	294	}
5129dffe TP	295
f634a4e7	296	#ifdef CONFIG_PM
674f3058 OBC	297	static int wl1271_suspend(struct device *dev)
	298	{
	299	/* Tell MMC/SDIO core it's OK to power down the card
	300	* (if it isn't already), but not to remove it completely */
039bdb14	301	struct sdio_func *func = dev_to_sdio_func(dev);
b6932894 ES	302	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
b6932894 ES	303	struct wl1271 *wl = platform_get_drvdata(glue->core);
039bdb14 EP	304	mmc_pm_flag_t sdio_flags;
	305	int ret = 0;
	306
3c4d3868 LC	307	dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
3c4d3868 LC	308	wl->wow_enabled);
039bdb14 EP	309
	310	/* check whether sdio should keep power */
	311	if (wl->wow_enabled) {
	312	sdio_flags = sdio_get_host_pm_caps(func);
	313
	314	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
3c4d3868 LC	315	dev_err(dev, "can't keep power while host "
3c4d3868 LC	316	"is suspended\n");
039bdb14 EP	317	ret = -EINVAL;
	318	goto out;
	319	}
	320
	321	/* keep power while host suspended */
	322	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	323	if (ret) {
3c4d3868	324	dev_err(dev, "error while trying to keep power\n");
039bdb14 EP	325	goto out;
	326	}
	327	}
	328	out:
	329	return ret;
674f3058 OBC	330	}
	331
	332	static int wl1271_resume(struct device *dev)
	333	{
3c4d3868	334	dev_dbg(dev, "wl1271 resume\n");
f44e5868	335
674f3058 OBC	336	return 0;
	337	}
	338
	339	static const struct dev_pm_ops wl1271_sdio_pm_ops = {
	340	.suspend = wl1271_suspend,
	341	.resume = wl1271_resume,
	342	};
f634a4e7	343	#endif
674f3058	344
5129dffe	345	static struct sdio_driver wl1271_sdio_driver = {
f4b5d8d8	346	.name = "wl1271_sdio",
5129dffe TP	347	.id_table = wl1271_devices,
	348	.probe = wl1271_probe,
	349	.remove = __devexit_p(wl1271_remove),
f634a4e7	350	#ifdef CONFIG_PM
674f3058 OBC	351	.drv = {
	352	.pm = &wl1271_sdio_pm_ops,
	353	},
f634a4e7	354	#endif
5129dffe TP	355	};
	356
	357	static int __init wl1271_init(void)
	358	{
6bdaf796	359	return sdio_register_driver(&wl1271_sdio_driver);
5129dffe TP	360	}
	361
	362	static void __exit wl1271_exit(void)
	363	{
	364	sdio_unregister_driver(&wl1271_sdio_driver);
5129dffe TP	365	}
	366
	367	module_init(wl1271_init);
	368	module_exit(wl1271_exit);
	369
	370	MODULE_LICENSE("GPL");
5245e3a9	371	MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
5129dffe	372	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
c302b2c9	373	MODULE_FIRMWARE(WL127X_FW_NAME);
5aa42346	374	MODULE_FIRMWARE(WL128X_FW_NAME);