[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/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 wl1271 *wl;
};

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 wl1271 *wl, unsigned int blksz)
{
	sdio_claim_host(wl->if_priv);
	sdio_set_block_size(wl->if_priv, blksz);
	sdio_release_host(wl->if_priv);
}

static inline struct wl12xx_sdio_glue *wl_to_glue(struct wl1271 *wl)
{
	return wl->if_priv;
}

static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
{
	return wl_to_glue(wl)->dev;
}

static irqreturn_t wl1271_hardirq(int irq, void *cookie)
{
	struct wl1271 *wl = cookie;
	unsigned long flags;

	wl1271_debug(DEBUG_IRQ, "IRQ");

	/* complete the ELP completion */
	spin_lock_irqsave(&wl->wl_lock, flags);
	set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
	if (wl->elp_compl) {
		complete(wl->elp_compl);
		wl->elp_compl = NULL;
	}

	if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
		/* don't enqueue a work right now. mark it as pending */
		set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
		wl1271_debug(DEBUG_IRQ, "should not enqueue work");
		disable_irq_nosync(wl->irq);
		pm_wakeup_event(wl1271_sdio_wl_to_dev(wl), 0);
		spin_unlock_irqrestore(&wl->wl_lock, flags);
		return IRQ_HANDLED;
	}
	spin_unlock_irqrestore(&wl->wl_lock, flags);

	return IRQ_WAKE_THREAD;
}

static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
{
	disable_irq(wl->irq);
}

static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
{
	enable_irq(wl->irq);
}

static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
				 size_t len, bool fixed)
{
	int ret;
	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
	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);
		wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
			     addr, ((u8 *)buf)[0]);
	} else {
		if (fixed)
			ret = sdio_readsb(func, buf, addr, len);
		else
			ret = sdio_memcpy_fromio(func, buf, addr, len);

		wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
			     addr, len);
		wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
	}

	if (ret)
		wl1271_error("sdio read failed (%d)", ret);
}

static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
				  size_t len, bool fixed)
{
	int ret;
	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
	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);
		wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
			     addr, ((u8 *)buf)[0]);
	} else {
		wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
			     addr, len);
		wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);

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

	if (ret)
		wl1271_error("sdio write failed (%d)", ret);
}

static int wl1271_sdio_power_on(struct wl1271 *wl)
{
	int ret;
	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
	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 wl1271_sdio_power_off(struct wl1271 *wl)
{
	int ret;
	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
	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 wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
{
	if (enable)
		return wl1271_sdio_power_on(wl);
	else
		return wl1271_sdio_power_off(wl);
}

static struct wl1271_if_operations sdio_ops = {
	.read		= wl1271_sdio_raw_read,
	.write		= wl1271_sdio_raw_write,
	.power		= wl1271_sdio_set_power,
	.dev		= wl1271_sdio_wl_to_dev,
	.enable_irq	= wl1271_sdio_enable_interrupts,
	.disable_irq	= wl1271_sdio_disable_interrupts,
	.set_block_size = wl1271_sdio_set_block_size,
};

static int __devinit wl1271_probe(struct sdio_func *func,
				  const struct sdio_device_id *id)
{
	struct ieee80211_hw *hw;
	const struct wl12xx_platform_data *wlan_data;
	struct wl1271 *wl;
	struct wl12xx_sdio_glue *glue;
	unsigned long irqflags;
	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) {
		wl1271_error("can't allocate glue");
		goto out;
	}

	hw = wl1271_alloc_hw();
	if (IS_ERR(hw)) {
		wl1271_error("can't allocate hw");
		ret = PTR_ERR(hw);
		goto out_free_glue;
	}

	wl = hw->priv;

	glue->dev = &func->dev;
	glue->wl = wl;

	wl->if_priv = glue;
	wl->if_ops = &sdio_ops;

	/* 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);
		wl1271_error("missing wlan platform data: %d", ret);
		goto out_free_hw;
	}

	wl->irq = wlan_data->irq;
	wl->ref_clock = wlan_data->board_ref_clock;
	wl->tcxo_clock = wlan_data->board_tcxo_clock;
	wl->platform_quirks = wlan_data->platform_quirks;

	if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
		irqflags = IRQF_TRIGGER_RISING;
	else
		irqflags = IRQF_TRIGGER_HIGH | IRQF_ONESHOT;

	ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
				   irqflags,
				   DRIVER_NAME, wl);
	if (ret < 0) {
		wl1271_error("request_irq() failed: %d", ret);
		goto out_free_hw;
	}

	ret = enable_irq_wake(wl->irq);
	if (!ret) {
		wl->irq_wake_enabled = true;
		device_init_wakeup(wl1271_sdio_wl_to_dev(wl), 1);

		/* if sdio can keep power while host is suspended, enable wow */
		mmcflags = sdio_get_host_pm_caps(func);
		wl1271_debug(DEBUG_SDIO, "sdio PM caps = 0x%x", mmcflags);

		if (mmcflags & MMC_PM_KEEP_POWER)
			hw->wiphy->wowlan.flags = WIPHY_WOWLAN_ANY;
	}
	disable_irq(wl->irq);

	ret = wl1271_init_ieee80211(wl);
	if (ret)
		goto out_irq;

	ret = wl1271_register_hw(wl);
	if (ret)
		goto out_irq;

	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);

	return 0;

out_irq:
	free_irq(wl->irq, wl);

out_free_hw:
	wl1271_free_hw(wl);

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);
	struct wl1271 *wl = glue->wl;

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

	wl1271_unregister_hw(wl);
	if (wl->irq_wake_enabled) {
		device_init_wakeup(wl1271_sdio_wl_to_dev(wl), 0);
		disable_irq_wake(wl->irq);
	}
	free_irq(wl->irq, wl);
	wl1271_free_hw(wl);
	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;

	wl1271_debug(DEBUG_MAC80211, "wl1271 suspend. wow_enabled: %d",
		     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)) {
			wl1271_error("can't keep power while host "
				     "is suspended");
			ret = -EINVAL;
			goto out;
		}

		/* keep power while host suspended */
		ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
		if (ret) {
			wl1271_error("error while trying to keep power");
			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);

	wl1271_debug(DEBUG_MAC80211, "wl1271 resume");
	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 TP	26	#include <linux/vmalloc.h>
	27	#include <linux/mmc/sdio_func.h>
	28	#include <linux/mmc/sdio_ids.h>
	29	#include <linux/mmc/card.h>
11251e7e	30	#include <linux/mmc/host.h>
19b87173	31	#include <linux/gpio.h>
09cecc34	32	#include <linux/wl12xx.h>
00cbb3c5	33	#include <linux/pm_runtime.h>
5129dffe	34
00d20100	35	#include "wl12xx.h"
5129dffe	36	#include "wl12xx_80211.h"
00d20100	37	#include "io.h"
5129dffe	38
5129dffe TP	39	#ifndef SDIO_VENDOR_ID_TI
	40	#define SDIO_VENDOR_ID_TI 0x0097
	41	#endif
	42
	43	#ifndef SDIO_DEVICE_ID_TI_WL1271
	44	#define SDIO_DEVICE_ID_TI_WL1271 0x4076
	45	#endif
	46
fbe936bc FB	47	struct wl12xx_sdio_glue {
	48	struct device *dev;
	49	struct wl1271 *wl;
	50	};
	51
33dd74c7	52	static const struct sdio_device_id wl1271_devices[] __devinitconst = {
5129dffe TP	53	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	54	{}
	55	};
	56	MODULE_DEVICE_TABLE(sdio, wl1271_devices);
	57
0da13da7	58	static void wl1271_sdio_set_block_size(struct wl1271 *wl, unsigned int blksz)
a81159ed	59	{
a81159ed	60	sdio_claim_host(wl->if_priv);
0da13da7	61	sdio_set_block_size(wl->if_priv, blksz);
a81159ed LC	62	sdio_release_host(wl->if_priv);
	63	}
	64
fbe936bc	65	static inline struct wl12xx_sdio_glue wl_to_glue(struct wl1271 wl)
5129dffe TP	66	{
	67	return wl->if_priv;
	68	}
	69
	70	static struct device wl1271_sdio_wl_to_dev(struct wl1271 wl)
	71	{
fbe936bc	72	return wl_to_glue(wl)->dev;
5129dffe TP	73	}
5129dffe TP	74
a620865e	75	static irqreturn_t wl1271_hardirq(int irq, void *cookie)
5129dffe TP	76	{
	77	struct wl1271 *wl = cookie;
	78	unsigned long flags;
	79
	80	wl1271_debug(DEBUG_IRQ, "IRQ");
	81
	82	/* complete the ELP completion */
	83	spin_lock_irqsave(&wl->wl_lock, flags);
a620865e	84	set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
5129dffe TP	85	if (wl->elp_compl) {
	86	complete(wl->elp_compl);
	87	wl->elp_compl = NULL;
	88	}
f44e5868 EP	89
	90	if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
	91	/* don't enqueue a work right now. mark it as pending */
	92	set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
	93	wl1271_debug(DEBUG_IRQ, "should not enqueue work");
	94	disable_irq_nosync(wl->irq);
	95	pm_wakeup_event(wl1271_sdio_wl_to_dev(wl), 0);
	96	spin_unlock_irqrestore(&wl->wl_lock, flags);
	97	return IRQ_HANDLED;
	98	}
5129dffe TP	99	spin_unlock_irqrestore(&wl->wl_lock, flags);
5129dffe TP	100
a620865e	101	return IRQ_WAKE_THREAD;
5129dffe TP	102	}
	103
	104	static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
	105	{
	106	disable_irq(wl->irq);
	107	}
	108
	109	static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
	110	{
	111	enable_irq(wl->irq);
	112	}
	113
5129dffe	114	static void wl1271_sdio_raw_read(struct wl1271 wl, int addr, void buf,
a3b8ea75	115	size_t len, bool fixed)
5129dffe TP	116	{
5129dffe TP	117	int ret;
fbe936bc FB	118	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
fbe936bc FB	119	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	120
5129dffe TP	121	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	122	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
a3b8ea75	123	wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
5129dffe TP	124	addr, ((u8 *)buf)[0]);
	125	} else {
	126	if (fixed)
	127	ret = sdio_readsb(func, buf, addr, len);
	128	else
	129	ret = sdio_memcpy_fromio(func, buf, addr, len);
	130
99e50314	131	wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
5129dffe	132	addr, len);
a3b8ea75	133	wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
5129dffe TP	134	}
	135
	136	if (ret)
	137	wl1271_error("sdio read failed (%d)", ret);
5129dffe TP	138	}
	139
	140	static void wl1271_sdio_raw_write(struct wl1271 wl, int addr, void buf,
a3b8ea75	141	size_t len, bool fixed)
5129dffe TP	142	{
5129dffe TP	143	int ret;
fbe936bc FB	144	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
fbe936bc FB	145	struct sdio_func *func = dev_to_sdio_func(glue->dev);
5129dffe	146
5129dffe TP	147	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	148	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
a3b8ea75	149	wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
5129dffe TP	150	addr, ((u8 *)buf)[0]);
5129dffe TP	151	} else {
99e50314	152	wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
5129dffe	153	addr, len);
a3b8ea75	154	wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
5129dffe TP	155
	156	if (fixed)
	157	ret = sdio_writesb(func, addr, buf, len);
	158	else
	159	ret = sdio_memcpy_toio(func, addr, buf, len);
	160	}
49063a0d	161
5129dffe TP	162	if (ret)
5129dffe TP	163	wl1271_error("sdio write failed (%d)", ret);
49063a0d OBC	164	}
49063a0d OBC	165
2cc78ff7	166	static int wl1271_sdio_power_on(struct wl1271 *wl)
49063a0d	167	{
00cbb3c5	168	int ret;
fbe936bc FB	169	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
fbe936bc FB	170	struct sdio_func *func = dev_to_sdio_func(glue->dev);
00cbb3c5	171
86046da4 OBC	172	/* If enabled, tell runtime PM not to power off the card */
	173	if (pm_runtime_enabled(&func->dev)) {
	174	ret = pm_runtime_get_sync(&func->dev);
a15f1c45	175	if (ret < 0)
86046da4	176	goto out;
b5d6e5f6 OBC	177	} else {
	178	/* Runtime PM is disabled: power up the card manually */
	179	ret = mmc_power_restore_host(func->card->host);
	180	if (ret < 0)
	181	goto out;
86046da4	182	}
5129dffe	183
49063a0d OBC	184	sdio_claim_host(func);
49063a0d OBC	185	sdio_enable_func(func);
2cc78ff7	186
00cbb3c5 OBC	187	out:
00cbb3c5 OBC	188	return ret;
49063a0d OBC	189	}
49063a0d OBC	190
2cc78ff7	191	static int wl1271_sdio_power_off(struct wl1271 *wl)
49063a0d	192	{
11251e7e	193	int ret;
fbe936bc FB	194	struct wl12xx_sdio_glue *glue = wl_to_glue(wl);
fbe936bc FB	195	struct sdio_func *func = dev_to_sdio_func(glue->dev);
49063a0d	196
49063a0d OBC	197	sdio_disable_func(func);
49063a0d OBC	198	sdio_release_host(func);
2cc78ff7	199
b5d6e5f6	200	/* Power off the card manually, even if runtime PM is enabled. */
11251e7e IY	201	ret = mmc_power_save_host(func->card->host);
	202	if (ret < 0)
	203	return ret;
	204
86046da4 OBC	205	/* If enabled, let runtime PM know the card is powered off */
	206	if (pm_runtime_enabled(&func->dev))
	207	ret = pm_runtime_put_sync(&func->dev);
	208
	209	return ret;
5129dffe TP	210	}
5129dffe TP	211
2cc78ff7	212	static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
becd551c	213	{
49063a0d	214	if (enable)
2cc78ff7	215	return wl1271_sdio_power_on(wl);
49063a0d	216	else
2cc78ff7	217	return wl1271_sdio_power_off(wl);
becd551c TP	218	}
becd551c TP	219
5129dffe TP	220	static struct wl1271_if_operations sdio_ops = {
	221	.read = wl1271_sdio_raw_read,
	222	.write = wl1271_sdio_raw_write,
becd551c	223	.power = wl1271_sdio_set_power,
5129dffe TP	224	.dev = wl1271_sdio_wl_to_dev,
5129dffe TP	225	.enable_irq = wl1271_sdio_enable_interrupts,
a81159ed LC	226	.disable_irq = wl1271_sdio_disable_interrupts,
a81159ed LC	227	.set_block_size = wl1271_sdio_set_block_size,
5129dffe TP	228	};
5129dffe TP	229
5129dffe TP	230	static int __devinit wl1271_probe(struct sdio_func *func,
	231	const struct sdio_device_id *id)
	232	{
	233	struct ieee80211_hw *hw;
09cecc34	234	const struct wl12xx_platform_data *wlan_data;
5129dffe	235	struct wl1271 *wl;
fbe936bc	236	struct wl12xx_sdio_glue *glue;
341b7cde	237	unsigned long irqflags;
f795ea8b	238	mmc_pm_flag_t mmcflags;
fbe936bc	239	int ret = -ENOMEM;
5129dffe TP	240
	241	/* We are only able to handle the wlan function */
	242	if (func->num != 0x02)
	243	return -ENODEV;
	244
fbe936bc FB	245	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
	246	if (!glue) {
	247	wl1271_error("can't allocate glue");
	248	goto out;
	249	}
	250
5129dffe	251	hw = wl1271_alloc_hw();
fbe936bc FB	252	if (IS_ERR(hw)) {
	253	wl1271_error("can't allocate hw");
	254	ret = PTR_ERR(hw);
	255	goto out_free_glue;
	256	}
5129dffe TP	257
	258	wl = hw->priv;
	259
fbe936bc FB	260	glue->dev = &func->dev;
	261	glue->wl = wl;
	262
	263	wl->if_priv = glue;
5129dffe TP	264	wl->if_ops = &sdio_ops;
5129dffe TP	265
5129dffe TP	266	/* Grab access to FN0 for ELP reg. */
	267	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	268
1d732e8c AN	269	/* Use block mode for transferring over one block size of data */
	270	func->card->quirks \|= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
	271
09cecc34 OBC	272	wlan_data = wl12xx_get_platform_data();
	273	if (IS_ERR(wlan_data)) {
	274	ret = PTR_ERR(wlan_data);
	275	wl1271_error("missing wlan platform data: %d", ret);
fbe936bc	276	goto out_free_hw;
5129dffe TP	277	}
5129dffe TP	278
09cecc34	279	wl->irq = wlan_data->irq;
15cea993	280	wl->ref_clock = wlan_data->board_ref_clock;
5ea417ae	281	wl->tcxo_clock = wlan_data->board_tcxo_clock;
341b7cde IY	282	wl->platform_quirks = wlan_data->platform_quirks;
	283
	284	if (wl->platform_quirks & WL12XX_PLATFORM_QUIRK_EDGE_IRQ)
	285	irqflags = IRQF_TRIGGER_RISING;
	286	else
	287	irqflags = IRQF_TRIGGER_HIGH \| IRQF_ONESHOT;
09cecc34	288
a620865e	289	ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
341b7cde	290	irqflags,
a620865e	291	DRIVER_NAME, wl);
5129dffe TP	292	if (ret < 0) {
5129dffe TP	293	wl1271_error("request_irq() failed: %d", ret);
fbe936bc	294	goto out_free_hw;
5129dffe TP	295	}
5129dffe TP	296
6bb04332 EP	297	ret = enable_irq_wake(wl->irq);
	298	if (!ret) {
	299	wl->irq_wake_enabled = true;
	300	device_init_wakeup(wl1271_sdio_wl_to_dev(wl), 1);
2c0f2463	301
6bb04332 EP	302	/* if sdio can keep power while host is suspended, enable wow */
	303	mmcflags = sdio_get_host_pm_caps(func);
	304	wl1271_debug(DEBUG_SDIO, "sdio PM caps = 0x%x", mmcflags);
f795ea8b	305
6bb04332 EP	306	if (mmcflags & MMC_PM_KEEP_POWER)
	307	hw->wiphy->wowlan.flags = WIPHY_WOWLAN_ANY;
	308	}
	309	disable_irq(wl->irq);
f795ea8b	310
5129dffe TP	311	ret = wl1271_init_ieee80211(wl);
	312	if (ret)
	313	goto out_irq;
	314
	315	ret = wl1271_register_hw(wl);
	316	if (ret)
	317	goto out_irq;
	318
fbe936bc	319	sdio_set_drvdata(func, glue);
49d7f6d8	320
00cbb3c5 OBC	321	/* Tell PM core that we don't need the card to be powered now */
	322	pm_runtime_put_noidle(&func->dev);
	323
5129dffe TP	324	return 0;
5129dffe TP	325
fbe936bc	326	out_irq:
5129dffe TP	327	free_irq(wl->irq, wl);
5129dffe TP	328
fbe936bc	329	out_free_hw:
3b56dd6a	330	wl1271_free_hw(wl);
5129dffe	331
fbe936bc FB	332	out_free_glue:
	333	kfree(glue);
	334	out:
5129dffe TP	335	return ret;
	336	}
	337
	338	static void __devexit wl1271_remove(struct sdio_func *func)
	339	{
fbe936bc FB	340	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
fbe936bc FB	341	struct wl1271 *wl = glue->wl;
5129dffe	342
00cbb3c5 OBC	343	/* Undo decrement done above in wl1271_probe */
	344	pm_runtime_get_noresume(&func->dev);
	345
3b56dd6a	346	wl1271_unregister_hw(wl);
6bb04332 EP	347	if (wl->irq_wake_enabled) {
	348	device_init_wakeup(wl1271_sdio_wl_to_dev(wl), 0);
	349	disable_irq_wake(wl->irq);
	350	}
4e23b11b	351	free_irq(wl->irq, wl);
801a673e	352	wl1271_free_hw(wl);
fbe936bc	353	kfree(glue);
5129dffe TP	354	}
5129dffe TP	355
f634a4e7	356	#ifdef CONFIG_PM
674f3058 OBC	357	static int wl1271_suspend(struct device *dev)
	358	{
	359	/* Tell MMC/SDIO core it's OK to power down the card
	360	* (if it isn't already), but not to remove it completely */
039bdb14 EP	361	struct sdio_func *func = dev_to_sdio_func(dev);
	362	struct wl1271 *wl = sdio_get_drvdata(func);
	363	mmc_pm_flag_t sdio_flags;
	364	int ret = 0;
	365
	366	wl1271_debug(DEBUG_MAC80211, "wl1271 suspend. wow_enabled: %d",
	367	wl->wow_enabled);
	368
	369	/* check whether sdio should keep power */
	370	if (wl->wow_enabled) {
	371	sdio_flags = sdio_get_host_pm_caps(func);
	372
	373	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
	374	wl1271_error("can't keep power while host "
	375	"is suspended");
	376	ret = -EINVAL;
	377	goto out;
	378	}
	379
	380	/* keep power while host suspended */
	381	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
	382	if (ret) {
	383	wl1271_error("error while trying to keep power");
	384	goto out;
	385	}
f44e5868 EP	386
	387	/* release host */
	388	sdio_release_host(func);
039bdb14 EP	389	}
	390	out:
	391	return ret;
674f3058 OBC	392	}
	393
	394	static int wl1271_resume(struct device *dev)
	395	{
f44e5868 EP	396	struct sdio_func *func = dev_to_sdio_func(dev);
	397	struct wl1271 *wl = sdio_get_drvdata(func);
	398
	399	wl1271_debug(DEBUG_MAC80211, "wl1271 resume");
	400	if (wl->wow_enabled) {
	401	/* claim back host */
	402	sdio_claim_host(func);
	403	}
	404
674f3058 OBC	405	return 0;
	406	}
	407
	408	static const struct dev_pm_ops wl1271_sdio_pm_ops = {
	409	.suspend = wl1271_suspend,
	410	.resume = wl1271_resume,
	411	};
f634a4e7	412	#endif
674f3058	413
5129dffe	414	static struct sdio_driver wl1271_sdio_driver = {
f4b5d8d8	415	.name = "wl1271_sdio",
5129dffe TP	416	.id_table = wl1271_devices,
	417	.probe = wl1271_probe,
	418	.remove = __devexit_p(wl1271_remove),
f634a4e7	419	#ifdef CONFIG_PM
674f3058 OBC	420	.drv = {
	421	.pm = &wl1271_sdio_pm_ops,
	422	},
f634a4e7	423	#endif
5129dffe TP	424	};
	425
	426	static int __init wl1271_init(void)
	427	{
6bdaf796	428	return sdio_register_driver(&wl1271_sdio_driver);
5129dffe TP	429	}
	430
	431	static void __exit wl1271_exit(void)
	432	{
	433	sdio_unregister_driver(&wl1271_sdio_driver);
5129dffe TP	434	}
	435
	436	module_init(wl1271_init);
	437	module_exit(wl1271_exit);
	438
	439	MODULE_LICENSE("GPL");
5245e3a9	440	MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
5129dffe	441	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
c302b2c9	442	MODULE_FIRMWARE(WL127X_FW_NAME);
5aa42346	443	MODULE_FIRMWARE(WL128X_FW_NAME);