[deliverable/linux.git] / drivers / net / wireless / ti / wlcore / 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.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 "wlcore.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)) {
		((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)) {
		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;
	const char *chip_family;

	/* 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);

	/*
	 * Due to a hardware bug, we can't differentiate wl18xx from
	 * wl12xx, because both report the same device ID.  The only
	 * way to differentiate is by checking the SDIO revision,
	 * which is 3.00 on the wl18xx chips.
	 */
	if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
		chip_family = "wl18xx";
	else
		chip_family = "wl12xx";

	glue->core = platform_device_alloc(chip_family, -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_SINGLE);
MODULE_FIRMWARE(WL127X_FW_NAME_MULTI);
MODULE_FIRMWARE(WL127X_PLT_FW_NAME);
MODULE_FIRMWARE(WL128X_FW_NAME_SINGLE);
MODULE_FIRMWARE(WL128X_FW_NAME_MULTI);
MODULE_FIRMWARE(WL128X_PLT_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>
197c6283	28	#include <linux/mmc/sdio.h>
5129dffe TP	29	#include <linux/mmc/sdio_func.h>
	30	#include <linux/mmc/sdio_ids.h>
	31	#include <linux/mmc/card.h>
11251e7e	32	#include <linux/mmc/host.h>
19b87173	33	#include <linux/gpio.h>
09cecc34	34	#include <linux/wl12xx.h>
00cbb3c5	35	#include <linux/pm_runtime.h>
5129dffe	36
c31be25a	37	#include "wlcore.h"
5129dffe	38	#include "wl12xx_80211.h"
00d20100	39	#include "io.h"
5129dffe	40
5129dffe TP	41	#ifndef SDIO_VENDOR_ID_TI
	42	#define SDIO_VENDOR_ID_TI 0x0097
	43	#endif
	44
	45	#ifndef SDIO_DEVICE_ID_TI_WL1271
	46	#define SDIO_DEVICE_ID_TI_WL1271 0x4076
	47	#endif
	48
fbe936bc FB	49	struct wl12xx_sdio_glue {
fbe936bc FB	50	struct device *dev;
025aef8f	51	struct platform_device *core;
fbe936bc FB	52	};
fbe936bc FB	53
33dd74c7	54	static const struct sdio_device_id wl1271_devices[] __devinitconst = {
5129dffe TP	55	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	56	{}
	57	};
	58	MODULE_DEVICE_TABLE(sdio, wl1271_devices);
	59
a390e85c FB	60	static void wl1271_sdio_set_block_size(struct device *child,
a390e85c FB	61	unsigned int blksz)
a81159ed	62	{
a390e85c FB	63	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
a390e85c FB	64	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	65
a390e85c FB	66	sdio_claim_host(func);
	67	sdio_set_block_size(func, blksz);
	68	sdio_release_host(func);
5129dffe TP	69	}
5129dffe TP	70
a390e85c	71	static void wl12xx_sdio_raw_read(struct device child, int addr, void buf,
a3b8ea75	72	size_t len, bool fixed)
5129dffe TP	73	{
5129dffe TP	74	int ret;
a390e85c	75	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
fbe936bc	76	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	77
b4748306 EP	78	sdio_claim_host(func);
b4748306 EP	79
00782136	80	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
5129dffe	81	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
3c4d3868 LC	82	dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	83	addr, ((u8 *)buf)[0]);
5129dffe TP	84	} else {
	85	if (fixed)
	86	ret = sdio_readsb(func, buf, addr, len);
	87	else
	88	ret = sdio_memcpy_fromio(func, buf, addr, len);
	89
3c4d3868 LC	90	dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	91	addr, len);
5129dffe TP	92	}
5129dffe TP	93
b4748306 EP	94	sdio_release_host(func);
b4748306 EP	95
5129dffe	96	if (ret)
3c4d3868	97	dev_err(child->parent, "sdio read failed (%d)\n", ret);
5129dffe TP	98	}
5129dffe TP	99
a390e85c	100	static void wl12xx_sdio_raw_write(struct device child, int addr, void buf,
a3b8ea75	101	size_t len, bool fixed)
5129dffe TP	102	{
5129dffe TP	103	int ret;
a390e85c	104	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
fbe936bc	105	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	106
b4748306 EP	107	sdio_claim_host(func);
b4748306 EP	108
00782136	109	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
5129dffe	110	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
3c4d3868 LC	111	dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	112	addr, ((u8 *)buf)[0]);
5129dffe	113	} else {
3c4d3868 LC	114	dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	115	addr, len);
5129dffe TP	116
	117	if (fixed)
	118	ret = sdio_writesb(func, addr, buf, len);
	119	else
	120	ret = sdio_memcpy_toio(func, addr, buf, len);
	121	}
49063a0d	122
b4748306 EP	123	sdio_release_host(func);
b4748306 EP	124
5129dffe	125	if (ret)
3c4d3868	126	dev_err(child->parent, "sdio write failed (%d)\n", ret);
49063a0d OBC	127	}
49063a0d OBC	128
a390e85c	129	static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
49063a0d	130	{
00cbb3c5	131	int ret;
fbe936bc	132	struct sdio_func *func = dev_to_sdio_func(glue->dev);
00cbb3c5	133
86046da4 OBC	134	/* If enabled, tell runtime PM not to power off the card */
	135	if (pm_runtime_enabled(&func->dev)) {
	136	ret = pm_runtime_get_sync(&func->dev);
a15f1c45	137	if (ret < 0)
86046da4	138	goto out;
b5d6e5f6 OBC	139	} else {
	140	/* Runtime PM is disabled: power up the card manually */
	141	ret = mmc_power_restore_host(func->card->host);
	142	if (ret < 0)
	143	goto out;
86046da4	144	}
5129dffe	145
49063a0d OBC	146	sdio_claim_host(func);
49063a0d OBC	147	sdio_enable_func(func);
b4748306	148	sdio_release_host(func);
2cc78ff7	149
00cbb3c5 OBC	150	out:
00cbb3c5 OBC	151	return ret;
49063a0d OBC	152	}
49063a0d OBC	153
a390e85c	154	static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
49063a0d	155	{
11251e7e	156	int ret;
fbe936bc	157	struct sdio_func *func = dev_to_sdio_func(glue->dev);
49063a0d	158
b4748306	159	sdio_claim_host(func);
49063a0d OBC	160	sdio_disable_func(func);
49063a0d OBC	161	sdio_release_host(func);
2cc78ff7	162
b5d6e5f6	163	/* Power off the card manually, even if runtime PM is enabled. */
11251e7e IY	164	ret = mmc_power_save_host(func->card->host);
	165	if (ret < 0)
	166	return ret;
	167
86046da4 OBC	168	/* If enabled, let runtime PM know the card is powered off */
	169	if (pm_runtime_enabled(&func->dev))
	170	ret = pm_runtime_put_sync(&func->dev);
	171
	172	return ret;
5129dffe TP	173	}
5129dffe TP	174
a390e85c	175	static int wl12xx_sdio_set_power(struct device *child, bool enable)
becd551c	176	{
a390e85c FB	177	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
a390e85c FB	178
49063a0d	179	if (enable)
a390e85c	180	return wl12xx_sdio_power_on(glue);
49063a0d	181	else
a390e85c	182	return wl12xx_sdio_power_off(glue);
becd551c TP	183	}
becd551c TP	184
5129dffe	185	static struct wl1271_if_operations sdio_ops = {
a390e85c FB	186	.read = wl12xx_sdio_raw_read,
	187	.write = wl12xx_sdio_raw_write,
	188	.power = wl12xx_sdio_set_power,
a81159ed	189	.set_block_size = wl1271_sdio_set_block_size,
5129dffe TP	190	};
5129dffe TP	191
5129dffe TP	192	static int __devinit wl1271_probe(struct sdio_func *func,
	193	const struct sdio_device_id *id)
	194	{
a390e85c	195	struct wl12xx_platform_data *wlan_data;
fbe936bc	196	struct wl12xx_sdio_glue *glue;
025aef8f	197	struct resource res[1];
f795ea8b	198	mmc_pm_flag_t mmcflags;
fbe936bc	199	int ret = -ENOMEM;
197c6283	200	const char *chip_family;
5129dffe TP	201
	202	/* We are only able to handle the wlan function */
	203	if (func->num != 0x02)
	204	return -ENODEV;
	205
fbe936bc FB	206	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
fbe936bc FB	207	if (!glue) {
3c4d3868	208	dev_err(&func->dev, "can't allocate glue\n");
fbe936bc FB	209	goto out;
	210	}
	211
fbe936bc	212	glue->dev = &func->dev;
5129dffe	213
5129dffe TP	214	/* Grab access to FN0 for ELP reg. */
	215	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	216
1d732e8c AN	217	/* Use block mode for transferring over one block size of data */
	218	func->card->quirks \|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
	219
09cecc34 OBC	220	wlan_data = wl12xx_get_platform_data();
	221	if (IS_ERR(wlan_data)) {
	222	ret = PTR_ERR(wlan_data);
3c4d3868	223	dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
a390e85c	224	goto out_free_glue;
5129dffe TP	225	}
5129dffe TP	226
a390e85c FB	227	/* if sdio can keep power while host is suspended, enable wow */
a390e85c FB	228	mmcflags = sdio_get_host_pm_caps(func);
3c4d3868	229	dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
2c0f2463	230
a390e85c FB	231	if (mmcflags & MMC_PM_KEEP_POWER)
a390e85c FB	232	wlan_data->pwr_in_suspend = true;
f795ea8b	233
a390e85c	234	wlan_data->ops = &sdio_ops;
5129dffe	235
fbe936bc	236	sdio_set_drvdata(func, glue);
49d7f6d8	237
00cbb3c5 OBC	238	/* Tell PM core that we don't need the card to be powered now */
	239	pm_runtime_put_noidle(&func->dev);
	240
197c6283 LC	241	/*
	242	* Due to a hardware bug, we can't differentiate wl18xx from
	243	* wl12xx, because both report the same device ID. The only
	244	* way to differentiate is by checking the SDIO revision,
	245	* which is 3.00 on the wl18xx chips.
	246	*/
	247	if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
	248	chip_family = "wl18xx";
	249	else
	250	chip_family = "wl12xx";
	251
	252	glue->core = platform_device_alloc(chip_family, -1);
025aef8f	253	if (!glue->core) {
3c4d3868	254	dev_err(glue->dev, "can't allocate platform_device");
025aef8f	255	ret = -ENOMEM;
a390e85c	256	goto out_free_glue;
025aef8f FB	257	}
	258
	259	glue->core->dev.parent = &func->dev;
	260
	261	memset(res, 0x00, sizeof(res));
	262
	263	res[0].start = wlan_data->irq;
	264	res[0].flags = IORESOURCE_IRQ;
	265	res[0].name = "irq";
	266
	267	ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
	268	if (ret) {
3c4d3868	269	dev_err(glue->dev, "can't add resources\n");
025aef8f FB	270	goto out_dev_put;
	271	}
	272
	273	ret = platform_device_add_data(glue->core, wlan_data,
	274	sizeof(*wlan_data));
	275	if (ret) {
3c4d3868	276	dev_err(glue->dev, "can't add platform data\n");
025aef8f FB	277	goto out_dev_put;
	278	}
	279
	280	ret = platform_device_add(glue->core);
	281	if (ret) {
3c4d3868	282	dev_err(glue->dev, "can't add platform device\n");
025aef8f FB	283	goto out_dev_put;
025aef8f FB	284	}
5129dffe TP	285	return 0;
5129dffe TP	286
025aef8f FB	287	out_dev_put:
	288	platform_device_put(glue->core);
	289
fbe936bc FB	290	out_free_glue:
fbe936bc FB	291	kfree(glue);
a390e85c	292
fbe936bc	293	out:
5129dffe TP	294	return ret;
	295	}
	296
	297	static void __devexit wl1271_remove(struct sdio_func *func)
	298	{
fbe936bc	299	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
5129dffe	300
00cbb3c5 OBC	301	/* Undo decrement done above in wl1271_probe */
	302	pm_runtime_get_noresume(&func->dev);
	303
025aef8f FB	304	platform_device_del(glue->core);
025aef8f FB	305	platform_device_put(glue->core);
fbe936bc	306	kfree(glue);
5129dffe TP	307	}
5129dffe TP	308
f634a4e7	309	#ifdef CONFIG_PM
674f3058 OBC	310	static int wl1271_suspend(struct device *dev)
	311	{
	312	/* Tell MMC/SDIO core it's OK to power down the card
	313	* (if it isn't already), but not to remove it completely */
039bdb14	314	struct sdio_func *func = dev_to_sdio_func(dev);
b6932894 ES	315	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
b6932894 ES	316	struct wl1271 *wl = platform_get_drvdata(glue->core);
039bdb14 EP	317	mmc_pm_flag_t sdio_flags;
	318	int ret = 0;
	319
3c4d3868 LC	320	dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
3c4d3868 LC	321	wl->wow_enabled);
039bdb14 EP	322
	323	/* check whether sdio should keep power */
	324	if (wl->wow_enabled) {
	325	sdio_flags = sdio_get_host_pm_caps(func);
	326
	327	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
3c4d3868 LC	328	dev_err(dev, "can't keep power while host "
3c4d3868 LC	329	"is suspended\n");
039bdb14 EP	330	ret = -EINVAL;
	331	goto out;
	332	}
	333
	334	/* keep power while host suspended */
	335	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	336	if (ret) {
3c4d3868	337	dev_err(dev, "error while trying to keep power\n");
039bdb14 EP	338	goto out;
	339	}
	340	}
	341	out:
	342	return ret;
674f3058 OBC	343	}
	344
	345	static int wl1271_resume(struct device *dev)
	346	{
3c4d3868	347	dev_dbg(dev, "wl1271 resume\n");
f44e5868	348
674f3058 OBC	349	return 0;
	350	}
	351
	352	static const struct dev_pm_ops wl1271_sdio_pm_ops = {
	353	.suspend = wl1271_suspend,
	354	.resume = wl1271_resume,
	355	};
f634a4e7	356	#endif
674f3058	357
5129dffe	358	static struct sdio_driver wl1271_sdio_driver = {
f4b5d8d8	359	.name = "wl1271_sdio",
5129dffe TP	360	.id_table = wl1271_devices,
	361	.probe = wl1271_probe,
	362	.remove = __devexit_p(wl1271_remove),
f634a4e7	363	#ifdef CONFIG_PM
674f3058 OBC	364	.drv = {
	365	.pm = &wl1271_sdio_pm_ops,
	366	},
f634a4e7	367	#endif
5129dffe TP	368	};
	369
	370	static int __init wl1271_init(void)
	371	{
6bdaf796	372	return sdio_register_driver(&wl1271_sdio_driver);
5129dffe TP	373	}
	374
	375	static void __exit wl1271_exit(void)
	376	{
	377	sdio_unregister_driver(&wl1271_sdio_driver);
5129dffe TP	378	}
	379
	380	module_init(wl1271_init);
	381	module_exit(wl1271_exit);
	382
	383	MODULE_LICENSE("GPL");
5245e3a9	384	MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
5129dffe	385	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
4549d09c EP	386	MODULE_FIRMWARE(WL127X_FW_NAME_SINGLE);
4549d09c EP	387	MODULE_FIRMWARE(WL127X_FW_NAME_MULTI);
3fcdab70	388	MODULE_FIRMWARE(WL127X_PLT_FW_NAME);
4549d09c EP	389	MODULE_FIRMWARE(WL128X_FW_NAME_SINGLE);
4549d09c EP	390	MODULE_FIRMWARE(WL128X_FW_NAME_MULTI);
3fcdab70	391	MODULE_FIRMWARE(WL128X_PLT_FW_NAME);