[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 <linux/printk.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

static bool dump = false;

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(dump)) {
		printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
		print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
				DUMP_PREFIX_OFFSET, 16, 1,
				buf, len, false);
	}

	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(dump)) {
		printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
		print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
				DUMP_PREFIX_OFFSET, 16, 1,
				buf, len, false);
	}

	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_param(dump, bool, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");

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>
df472894	36	#include <linux/printk.h>
5129dffe	37
c31be25a	38	#include "wlcore.h"
5129dffe	39	#include "wl12xx_80211.h"
00d20100	40	#include "io.h"
5129dffe	41
5129dffe TP	42	#ifndef SDIO_VENDOR_ID_TI
	43	#define SDIO_VENDOR_ID_TI 0x0097
	44	#endif
	45
	46	#ifndef SDIO_DEVICE_ID_TI_WL1271
	47	#define SDIO_DEVICE_ID_TI_WL1271 0x4076
	48	#endif
	49
df472894 LC	50	static bool dump = false;
df472894 LC	51
fbe936bc FB	52	struct wl12xx_sdio_glue {
fbe936bc FB	53	struct device *dev;
025aef8f	54	struct platform_device *core;
fbe936bc FB	55	};
fbe936bc FB	56
33dd74c7	57	static const struct sdio_device_id wl1271_devices[] __devinitconst = {
5129dffe TP	58	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	59	{}
	60	};
	61	MODULE_DEVICE_TABLE(sdio, wl1271_devices);
	62
a390e85c FB	63	static void wl1271_sdio_set_block_size(struct device *child,
a390e85c FB	64	unsigned int blksz)
a81159ed	65	{
a390e85c FB	66	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
a390e85c FB	67	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	68
a390e85c FB	69	sdio_claim_host(func);
	70	sdio_set_block_size(func, blksz);
	71	sdio_release_host(func);
5129dffe TP	72	}
5129dffe TP	73
a390e85c	74	static void wl12xx_sdio_raw_read(struct device child, int addr, void buf,
a3b8ea75	75	size_t len, bool fixed)
5129dffe TP	76	{
5129dffe TP	77	int ret;
a390e85c	78	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
fbe936bc	79	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	80
b4748306 EP	81	sdio_claim_host(func);
b4748306 EP	82
df472894 LC	83	if (unlikely(dump)) {
	84	printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
	85	print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
	86	DUMP_PREFIX_OFFSET, 16, 1,
	87	buf, len, false);
	88	}
	89
00782136	90	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
5129dffe	91	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
3c4d3868 LC	92	dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	93	addr, ((u8 *)buf)[0]);
5129dffe TP	94	} else {
	95	if (fixed)
	96	ret = sdio_readsb(func, buf, addr, len);
	97	else
	98	ret = sdio_memcpy_fromio(func, buf, addr, len);
	99
3c4d3868 LC	100	dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	101	addr, len);
5129dffe TP	102	}
5129dffe TP	103
b4748306 EP	104	sdio_release_host(func);
b4748306 EP	105
5129dffe	106	if (ret)
3c4d3868	107	dev_err(child->parent, "sdio read failed (%d)\n", ret);
5129dffe TP	108	}
5129dffe TP	109
a390e85c	110	static void wl12xx_sdio_raw_write(struct device child, int addr, void buf,
a3b8ea75	111	size_t len, bool fixed)
5129dffe TP	112	{
5129dffe TP	113	int ret;
a390e85c	114	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
fbe936bc	115	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	116
b4748306 EP	117	sdio_claim_host(func);
b4748306 EP	118
df472894 LC	119	if (unlikely(dump)) {
	120	printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
	121	print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
	122	DUMP_PREFIX_OFFSET, 16, 1,
	123	buf, len, false);
	124	}
	125
00782136	126	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
5129dffe	127	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
3c4d3868 LC	128	dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
3c4d3868 LC	129	addr, ((u8 *)buf)[0]);
5129dffe	130	} else {
3c4d3868 LC	131	dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
3c4d3868 LC	132	addr, len);
5129dffe TP	133
	134	if (fixed)
	135	ret = sdio_writesb(func, addr, buf, len);
	136	else
	137	ret = sdio_memcpy_toio(func, addr, buf, len);
	138	}
49063a0d	139
b4748306 EP	140	sdio_release_host(func);
b4748306 EP	141
5129dffe	142	if (ret)
3c4d3868	143	dev_err(child->parent, "sdio write failed (%d)\n", ret);
49063a0d OBC	144	}
49063a0d OBC	145
a390e85c	146	static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
49063a0d	147	{
00cbb3c5	148	int ret;
fbe936bc	149	struct sdio_func *func = dev_to_sdio_func(glue->dev);
00cbb3c5	150
86046da4 OBC	151	/* If enabled, tell runtime PM not to power off the card */
	152	if (pm_runtime_enabled(&func->dev)) {
	153	ret = pm_runtime_get_sync(&func->dev);
a15f1c45	154	if (ret < 0)
86046da4	155	goto out;
b5d6e5f6 OBC	156	} else {
	157	/* Runtime PM is disabled: power up the card manually */
	158	ret = mmc_power_restore_host(func->card->host);
	159	if (ret < 0)
	160	goto out;
86046da4	161	}
5129dffe	162
49063a0d OBC	163	sdio_claim_host(func);
49063a0d OBC	164	sdio_enable_func(func);
b4748306	165	sdio_release_host(func);
2cc78ff7	166
00cbb3c5 OBC	167	out:
00cbb3c5 OBC	168	return ret;
49063a0d OBC	169	}
49063a0d OBC	170
a390e85c	171	static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
49063a0d	172	{
11251e7e	173	int ret;
fbe936bc	174	struct sdio_func *func = dev_to_sdio_func(glue->dev);
49063a0d	175
b4748306	176	sdio_claim_host(func);
49063a0d OBC	177	sdio_disable_func(func);
49063a0d OBC	178	sdio_release_host(func);
2cc78ff7	179
b5d6e5f6	180	/* Power off the card manually, even if runtime PM is enabled. */
11251e7e IY	181	ret = mmc_power_save_host(func->card->host);
	182	if (ret < 0)
	183	return ret;
	184
86046da4 OBC	185	/* If enabled, let runtime PM know the card is powered off */
	186	if (pm_runtime_enabled(&func->dev))
	187	ret = pm_runtime_put_sync(&func->dev);
	188
	189	return ret;
5129dffe TP	190	}
5129dffe TP	191
a390e85c	192	static int wl12xx_sdio_set_power(struct device *child, bool enable)
becd551c	193	{
a390e85c FB	194	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
a390e85c FB	195
49063a0d	196	if (enable)
a390e85c	197	return wl12xx_sdio_power_on(glue);
49063a0d	198	else
a390e85c	199	return wl12xx_sdio_power_off(glue);
becd551c TP	200	}
becd551c TP	201
5129dffe	202	static struct wl1271_if_operations sdio_ops = {
a390e85c FB	203	.read = wl12xx_sdio_raw_read,
	204	.write = wl12xx_sdio_raw_write,
	205	.power = wl12xx_sdio_set_power,
a81159ed	206	.set_block_size = wl1271_sdio_set_block_size,
5129dffe TP	207	};
5129dffe TP	208
5129dffe TP	209	static int __devinit wl1271_probe(struct sdio_func *func,
	210	const struct sdio_device_id *id)
	211	{
a390e85c	212	struct wl12xx_platform_data *wlan_data;
fbe936bc	213	struct wl12xx_sdio_glue *glue;
025aef8f	214	struct resource res[1];
f795ea8b	215	mmc_pm_flag_t mmcflags;
fbe936bc	216	int ret = -ENOMEM;
197c6283	217	const char *chip_family;
5129dffe TP	218
	219	/* We are only able to handle the wlan function */
	220	if (func->num != 0x02)
	221	return -ENODEV;
	222
fbe936bc FB	223	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
fbe936bc FB	224	if (!glue) {
3c4d3868	225	dev_err(&func->dev, "can't allocate glue\n");
fbe936bc FB	226	goto out;
	227	}
	228
fbe936bc	229	glue->dev = &func->dev;
5129dffe	230
5129dffe TP	231	/* Grab access to FN0 for ELP reg. */
	232	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	233
1d732e8c AN	234	/* Use block mode for transferring over one block size of data */
	235	func->card->quirks \|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
	236
09cecc34 OBC	237	wlan_data = wl12xx_get_platform_data();
	238	if (IS_ERR(wlan_data)) {
	239	ret = PTR_ERR(wlan_data);
3c4d3868	240	dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
a390e85c	241	goto out_free_glue;
5129dffe TP	242	}
5129dffe TP	243
a390e85c FB	244	/* if sdio can keep power while host is suspended, enable wow */
a390e85c FB	245	mmcflags = sdio_get_host_pm_caps(func);
3c4d3868	246	dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
2c0f2463	247
a390e85c FB	248	if (mmcflags & MMC_PM_KEEP_POWER)
a390e85c FB	249	wlan_data->pwr_in_suspend = true;
f795ea8b	250
a390e85c	251	wlan_data->ops = &sdio_ops;
5129dffe	252
fbe936bc	253	sdio_set_drvdata(func, glue);
49d7f6d8	254
00cbb3c5 OBC	255	/* Tell PM core that we don't need the card to be powered now */
	256	pm_runtime_put_noidle(&func->dev);
	257
197c6283 LC	258	/*
	259	* Due to a hardware bug, we can't differentiate wl18xx from
	260	* wl12xx, because both report the same device ID. The only
	261	* way to differentiate is by checking the SDIO revision,
	262	* which is 3.00 on the wl18xx chips.
	263	*/
	264	if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
	265	chip_family = "wl18xx";
	266	else
	267	chip_family = "wl12xx";
	268
	269	glue->core = platform_device_alloc(chip_family, -1);
025aef8f	270	if (!glue->core) {
3c4d3868	271	dev_err(glue->dev, "can't allocate platform_device");
025aef8f	272	ret = -ENOMEM;
a390e85c	273	goto out_free_glue;
025aef8f FB	274	}
	275
	276	glue->core->dev.parent = &func->dev;
	277
	278	memset(res, 0x00, sizeof(res));
	279
	280	res[0].start = wlan_data->irq;
	281	res[0].flags = IORESOURCE_IRQ;
	282	res[0].name = "irq";
	283
	284	ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
	285	if (ret) {
3c4d3868	286	dev_err(glue->dev, "can't add resources\n");
025aef8f FB	287	goto out_dev_put;
	288	}
	289
	290	ret = platform_device_add_data(glue->core, wlan_data,
	291	sizeof(*wlan_data));
	292	if (ret) {
3c4d3868	293	dev_err(glue->dev, "can't add platform data\n");
025aef8f FB	294	goto out_dev_put;
	295	}
	296
	297	ret = platform_device_add(glue->core);
	298	if (ret) {
3c4d3868	299	dev_err(glue->dev, "can't add platform device\n");
025aef8f FB	300	goto out_dev_put;
025aef8f FB	301	}
5129dffe TP	302	return 0;
5129dffe TP	303
025aef8f FB	304	out_dev_put:
	305	platform_device_put(glue->core);
	306
fbe936bc FB	307	out_free_glue:
fbe936bc FB	308	kfree(glue);
a390e85c	309
fbe936bc	310	out:
5129dffe TP	311	return ret;
	312	}
	313
	314	static void __devexit wl1271_remove(struct sdio_func *func)
	315	{
fbe936bc	316	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
5129dffe	317
00cbb3c5 OBC	318	/* Undo decrement done above in wl1271_probe */
	319	pm_runtime_get_noresume(&func->dev);
	320
025aef8f FB	321	platform_device_del(glue->core);
025aef8f FB	322	platform_device_put(glue->core);
fbe936bc	323	kfree(glue);
5129dffe TP	324	}
5129dffe TP	325
f634a4e7	326	#ifdef CONFIG_PM
674f3058 OBC	327	static int wl1271_suspend(struct device *dev)
	328	{
	329	/* Tell MMC/SDIO core it's OK to power down the card
	330	* (if it isn't already), but not to remove it completely */
039bdb14	331	struct sdio_func *func = dev_to_sdio_func(dev);
b6932894 ES	332	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
b6932894 ES	333	struct wl1271 *wl = platform_get_drvdata(glue->core);
039bdb14 EP	334	mmc_pm_flag_t sdio_flags;
	335	int ret = 0;
	336
3c4d3868 LC	337	dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
3c4d3868 LC	338	wl->wow_enabled);
039bdb14 EP	339
	340	/* check whether sdio should keep power */
	341	if (wl->wow_enabled) {
	342	sdio_flags = sdio_get_host_pm_caps(func);
	343
	344	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
3c4d3868 LC	345	dev_err(dev, "can't keep power while host "
3c4d3868 LC	346	"is suspended\n");
039bdb14 EP	347	ret = -EINVAL;
	348	goto out;
	349	}
	350
	351	/* keep power while host suspended */
	352	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	353	if (ret) {
3c4d3868	354	dev_err(dev, "error while trying to keep power\n");
039bdb14 EP	355	goto out;
	356	}
	357	}
	358	out:
	359	return ret;
674f3058 OBC	360	}
	361
	362	static int wl1271_resume(struct device *dev)
	363	{
3c4d3868	364	dev_dbg(dev, "wl1271 resume\n");
f44e5868	365
674f3058 OBC	366	return 0;
	367	}
	368
	369	static const struct dev_pm_ops wl1271_sdio_pm_ops = {
	370	.suspend = wl1271_suspend,
	371	.resume = wl1271_resume,
	372	};
f634a4e7	373	#endif
674f3058	374
5129dffe	375	static struct sdio_driver wl1271_sdio_driver = {
f4b5d8d8	376	.name = "wl1271_sdio",
5129dffe TP	377	.id_table = wl1271_devices,
	378	.probe = wl1271_probe,
	379	.remove = __devexit_p(wl1271_remove),
f634a4e7	380	#ifdef CONFIG_PM
674f3058 OBC	381	.drv = {
	382	.pm = &wl1271_sdio_pm_ops,
	383	},
f634a4e7	384	#endif
5129dffe TP	385	};
	386
	387	static int __init wl1271_init(void)
	388	{
6bdaf796	389	return sdio_register_driver(&wl1271_sdio_driver);
5129dffe TP	390	}
	391
	392	static void __exit wl1271_exit(void)
	393	{
	394	sdio_unregister_driver(&wl1271_sdio_driver);
5129dffe TP	395	}
	396
	397	module_init(wl1271_init);
	398	module_exit(wl1271_exit);
	399
df472894 LC	400	module_param(dump, bool, S_IRUSR \| S_IWUSR);
	401	MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
	402
5129dffe	403	MODULE_LICENSE("GPL");
5245e3a9	404	MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
5129dffe	405	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
4549d09c EP	406	MODULE_FIRMWARE(WL127X_FW_NAME_SINGLE);
4549d09c EP	407	MODULE_FIRMWARE(WL127X_FW_NAME_MULTI);
3fcdab70	408	MODULE_FIRMWARE(WL127X_PLT_FW_NAME);
4549d09c EP	409	MODULE_FIRMWARE(WL128X_FW_NAME_SINGLE);
4549d09c EP	410	MODULE_FIRMWARE(WL128X_FW_NAME_MULTI);
3fcdab70	411	MODULE_FIRMWARE(WL128X_PLT_FW_NAME);