[net-next-2.6.git] / drivers / net / wireless / wl12xx / wl1251_sdio.c

/*
 * wl12xx SDIO routines
 *
 * 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
 *
 * Copyright (C) 2005 Texas Instruments Incorporated
 * Copyright (C) 2008 Google Inc
 * Copyright (C) 2009 Bob Copeland (me@bobcopeland.com)
 */
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/platform_device.h>
#include <linux/spi/wl12xx.h>
#include <linux/irq.h>

#include "wl1251.h"

#ifndef SDIO_VENDOR_ID_TI
#define SDIO_VENDOR_ID_TI		0x104c
#endif

#ifndef SDIO_DEVICE_ID_TI_WL1251
#define SDIO_DEVICE_ID_TI_WL1251	0x9066
#endif

static struct wl12xx_platform_data *wl12xx_board_data;

static struct sdio_func *wl_to_func(struct wl1251 *wl)
{
	return wl->if_priv;
}

static void wl1251_sdio_interrupt(struct sdio_func *func)
{
	struct wl1251 *wl = sdio_get_drvdata(func);

	wl1251_debug(DEBUG_IRQ, "IRQ");

	/* FIXME should be synchronous for sdio */
	ieee80211_queue_work(wl->hw, &wl->irq_work);
}

static const struct sdio_device_id wl1251_devices[] = {
	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) },
	{}
};
MODULE_DEVICE_TABLE(sdio, wl1251_devices);


static void wl1251_sdio_read(struct wl1251 *wl, int addr,
			     void *buf, size_t len)
{
	int ret;
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	ret = sdio_memcpy_fromio(func, buf, addr, len);
	if (ret)
		wl1251_error("sdio read failed (%d)", ret);
	sdio_release_host(func);
}

static void wl1251_sdio_write(struct wl1251 *wl, int addr,
			      void *buf, size_t len)
{
	int ret;
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	ret = sdio_memcpy_toio(func, addr, buf, len);
	if (ret)
		wl1251_error("sdio write failed (%d)", ret);
	sdio_release_host(func);
}

static void wl1251_sdio_read_elp(struct wl1251 *wl, int addr, u32 *val)
{
	int ret = 0;
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	*val = sdio_readb(func, addr, &ret);
	sdio_release_host(func);

	if (ret)
		wl1251_error("sdio_readb failed (%d)", ret);
}

static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val)
{
	int ret = 0;
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	sdio_writeb(func, val, addr, &ret);
	sdio_release_host(func);

	if (ret)
		wl1251_error("sdio_writeb failed (%d)", ret);
}

static void wl1251_sdio_reset(struct wl1251 *wl)
{
}

static void wl1251_sdio_enable_irq(struct wl1251 *wl)
{
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	sdio_claim_irq(func, wl1251_sdio_interrupt);
	sdio_release_host(func);
}

static void wl1251_sdio_disable_irq(struct wl1251 *wl)
{
	struct sdio_func *func = wl_to_func(wl);

	sdio_claim_host(func);
	sdio_release_irq(func);
	sdio_release_host(func);
}

/* Interrupts when using dedicated WLAN_IRQ pin */
static irqreturn_t wl1251_line_irq(int irq, void *cookie)
{
	struct wl1251 *wl = cookie;

	ieee80211_queue_work(wl->hw, &wl->irq_work);

	return IRQ_HANDLED;
}

static void wl1251_enable_line_irq(struct wl1251 *wl)
{
	return enable_irq(wl->irq);
}

static void wl1251_disable_line_irq(struct wl1251 *wl)
{
	return disable_irq(wl->irq);
}

static void wl1251_sdio_set_power(bool enable)
{
}

static struct wl1251_if_operations wl1251_sdio_ops = {
	.read = wl1251_sdio_read,
	.write = wl1251_sdio_write,
	.write_elp = wl1251_sdio_write_elp,
	.read_elp = wl1251_sdio_read_elp,
	.reset = wl1251_sdio_reset,
};

static int wl1251_platform_probe(struct platform_device *pdev)
{
	if (pdev->id != -1) {
		wl1251_error("can only handle single device");
		return -ENODEV;
	}

	wl12xx_board_data = pdev->dev.platform_data;
	return 0;
}

/*
 * Dummy platform_driver for passing platform_data to this driver,
 * until we have a way to pass this through SDIO subsystem or
 * some other way.
 */
static struct platform_driver wl1251_platform_driver = {
	.driver = {
		.name	= "wl1251_data",
		.owner	= THIS_MODULE,
	},
	.probe	= wl1251_platform_probe,
};

static int wl1251_sdio_probe(struct sdio_func *func,
			     const struct sdio_device_id *id)
{
	int ret;
	struct wl1251 *wl;
	struct ieee80211_hw *hw;

	hw = wl1251_alloc_hw();
	if (IS_ERR(hw))
		return PTR_ERR(hw);

	wl = hw->priv;

	sdio_claim_host(func);
	ret = sdio_enable_func(func);
	if (ret)
		goto release;

	sdio_set_block_size(func, 512);
	sdio_release_host(func);

	SET_IEEE80211_DEV(hw, &func->dev);
	wl->if_priv = func;
	wl->if_ops = &wl1251_sdio_ops;
	wl->set_power = wl1251_sdio_set_power;

	if (wl12xx_board_data != NULL) {
		wl->set_power = wl12xx_board_data->set_power;
		wl->irq = wl12xx_board_data->irq;
		wl->use_eeprom = wl12xx_board_data->use_eeprom;
	}

	if (wl->irq) {
		ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl);
		if (ret < 0) {
			wl1251_error("request_irq() failed: %d", ret);
			goto disable;
		}

		set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
		disable_irq(wl->irq);

		wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
		wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;

		wl1251_info("using dedicated interrupt line");
	} else {
		wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
		wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;

		wl1251_info("using SDIO interrupt");
	}

	ret = wl1251_init_ieee80211(wl);
	if (ret)
		goto out_free_irq;

	sdio_set_drvdata(func, wl);
	return ret;

out_free_irq:
	if (wl->irq)
		free_irq(wl->irq, wl);
disable:
	sdio_claim_host(func);
	sdio_disable_func(func);
release:
	sdio_release_host(func);
	wl1251_free_hw(wl);
	return ret;
}

static void __devexit wl1251_sdio_remove(struct sdio_func *func)
{
	struct wl1251 *wl = sdio_get_drvdata(func);

	if (wl->irq)
		free_irq(wl->irq, wl);
	wl1251_free_hw(wl);

	sdio_claim_host(func);
	sdio_release_irq(func);
	sdio_disable_func(func);
	sdio_release_host(func);
}

static struct sdio_driver wl1251_sdio_driver = {
	.name		= "wl1251_sdio",
	.id_table	= wl1251_devices,
	.probe		= wl1251_sdio_probe,
	.remove		= __devexit_p(wl1251_sdio_remove),
};

static int __init wl1251_sdio_init(void)
{
	int err;

	err = platform_driver_register(&wl1251_platform_driver);
	if (err) {
		wl1251_error("failed to register platform driver: %d", err);
		return err;
	}

	err = sdio_register_driver(&wl1251_sdio_driver);
	if (err)
		wl1251_error("failed to register sdio driver: %d", err);
	return err;
}

static void __exit wl1251_sdio_exit(void)
{
	sdio_unregister_driver(&wl1251_sdio_driver);
	platform_driver_unregister(&wl1251_platform_driver);
	wl1251_notice("unloaded");
}

module_init(wl1251_sdio_init);
module_exit(wl1251_sdio_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
Commit	Line	Data
3ec410d7 BC	1	/*
	2	* wl12xx SDIO routines
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	11	* General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, write to the Free Software
	15	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	16	* 02110-1301 USA
	17	*
	18	* Copyright (C) 2005 Texas Instruments Incorporated
	19	* Copyright (C) 2008 Google Inc
	20	* Copyright (C) 2009 Bob Copeland (me@bobcopeland.com)
	21	*/
	22	#include <linux/module.h>
3ec410d7	23	#include <linux/mod_devicetable.h>
3ec410d7 BC	24	#include <linux/mmc/sdio_func.h>
3ec410d7 BC	25	#include <linux/mmc/sdio_ids.h>
8c00b39f GI	26	#include <linux/platform_device.h>
8c00b39f GI	27	#include <linux/spi/wl12xx.h>
a02a2956	28	#include <linux/irq.h>
3ec410d7 BC	29
3ec410d7 BC	30	#include "wl1251.h"
3ec410d7 BC	31
	32	#ifndef SDIO_VENDOR_ID_TI
	33	#define SDIO_VENDOR_ID_TI 0x104c
	34	#endif
	35
	36	#ifndef SDIO_DEVICE_ID_TI_WL1251
	37	#define SDIO_DEVICE_ID_TI_WL1251 0x9066
	38	#endif
	39
8c00b39f GI	40	static struct wl12xx_platform_data *wl12xx_board_data;
8c00b39f GI	41
3ec410d7 BC	42	static struct sdio_func wl_to_func(struct wl1251 wl)
	43	{
	44	return wl->if_priv;
	45	}
	46
	47	static void wl1251_sdio_interrupt(struct sdio_func *func)
	48	{
b5ed9c1b BC	49	struct wl1251 *wl = sdio_get_drvdata(func);
	50
	51	wl1251_debug(DEBUG_IRQ, "IRQ");
	52
	53	/* FIXME should be synchronous for sdio */
16e711f9	54	ieee80211_queue_work(wl->hw, &wl->irq_work);
3ec410d7 BC	55	}
	56
	57	static const struct sdio_device_id wl1251_devices[] = {
	58	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) },
	59	{}
	60	};
	61	MODULE_DEVICE_TABLE(sdio, wl1251_devices);
	62
	63
3c9cb9c3 GI	64	static void wl1251_sdio_read(struct wl1251 *wl, int addr,
3c9cb9c3 GI	65	void *buf, size_t len)
3ec410d7 BC	66	{
	67	int ret;
	68	struct sdio_func *func = wl_to_func(wl);
	69
	70	sdio_claim_host(func);
	71	ret = sdio_memcpy_fromio(func, buf, addr, len);
	72	if (ret)
	73	wl1251_error("sdio read failed (%d)", ret);
	74	sdio_release_host(func);
	75	}
	76
3c9cb9c3 GI	77	static void wl1251_sdio_write(struct wl1251 *wl, int addr,
3c9cb9c3 GI	78	void *buf, size_t len)
3ec410d7 BC	79	{
	80	int ret;
	81	struct sdio_func *func = wl_to_func(wl);
	82
	83	sdio_claim_host(func);
	84	ret = sdio_memcpy_toio(func, addr, buf, len);
	85	if (ret)
	86	wl1251_error("sdio write failed (%d)", ret);
	87	sdio_release_host(func);
	88	}
	89
3f9e750d GI	90	static void wl1251_sdio_read_elp(struct wl1251 wl, int addr, u32 val)
	91	{
	92	int ret = 0;
	93	struct sdio_func *func = wl_to_func(wl);
	94
	95	sdio_claim_host(func);
	96	*val = sdio_readb(func, addr, &ret);
	97	sdio_release_host(func);
	98
	99	if (ret)
	100	wl1251_error("sdio_readb failed (%d)", ret);
	101	}
	102
	103	static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val)
	104	{
	105	int ret = 0;
	106	struct sdio_func *func = wl_to_func(wl);
	107
	108	sdio_claim_host(func);
	109	sdio_writeb(func, val, addr, &ret);
	110	sdio_release_host(func);
	111
	112	if (ret)
	113	wl1251_error("sdio_writeb failed (%d)", ret);
	114	}
	115
3c9cb9c3	116	static void wl1251_sdio_reset(struct wl1251 *wl)
3ec410d7 BC	117	{
	118	}
	119
b5ed9c1b BC	120	static void wl1251_sdio_enable_irq(struct wl1251 *wl)
	121	{
	122	struct sdio_func *func = wl_to_func(wl);
	123
	124	sdio_claim_host(func);
	125	sdio_claim_irq(func, wl1251_sdio_interrupt);
	126	sdio_release_host(func);
	127	}
	128
	129	static void wl1251_sdio_disable_irq(struct wl1251 *wl)
	130	{
	131	struct sdio_func *func = wl_to_func(wl);
	132
	133	sdio_claim_host(func);
	134	sdio_release_irq(func);
	135	sdio_release_host(func);
	136	}
	137
a02a2956 GI	138	/* Interrupts when using dedicated WLAN_IRQ pin */
	139	static irqreturn_t wl1251_line_irq(int irq, void *cookie)
	140	{
	141	struct wl1251 *wl = cookie;
	142
	143	ieee80211_queue_work(wl->hw, &wl->irq_work);
	144
	145	return IRQ_HANDLED;
	146	}
	147
	148	static void wl1251_enable_line_irq(struct wl1251 *wl)
	149	{
	150	return enable_irq(wl->irq);
	151	}
	152
	153	static void wl1251_disable_line_irq(struct wl1251 *wl)
	154	{
	155	return disable_irq(wl->irq);
	156	}
	157
3c9cb9c3	158	static void wl1251_sdio_set_power(bool enable)
3ec410d7 BC	159	{
	160	}
	161
a02a2956	162	static struct wl1251_if_operations wl1251_sdio_ops = {
3ec410d7 BC	163	.read = wl1251_sdio_read,
3ec410d7 BC	164	.write = wl1251_sdio_write,
3f9e750d GI	165	.write_elp = wl1251_sdio_write_elp,
3f9e750d GI	166	.read_elp = wl1251_sdio_read_elp,
3ec410d7 BC	167	.reset = wl1251_sdio_reset,
	168	};
	169
8c00b39f GI	170	static int wl1251_platform_probe(struct platform_device *pdev)
	171	{
	172	if (pdev->id != -1) {
	173	wl1251_error("can only handle single device");
	174	return -ENODEV;
	175	}
	176
	177	wl12xx_board_data = pdev->dev.platform_data;
	178	return 0;
	179	}
	180
	181	/*
	182	* Dummy platform_driver for passing platform_data to this driver,
	183	* until we have a way to pass this through SDIO subsystem or
	184	* some other way.
	185	*/
	186	static struct platform_driver wl1251_platform_driver = {
	187	.driver = {
	188	.name = "wl1251_data",
	189	.owner = THIS_MODULE,
	190	},
	191	.probe = wl1251_platform_probe,
	192	};
	193
3c9cb9c3 GI	194	static int wl1251_sdio_probe(struct sdio_func *func,
3c9cb9c3 GI	195	const struct sdio_device_id *id)
3ec410d7 BC	196	{
	197	int ret;
	198	struct wl1251 *wl;
	199	struct ieee80211_hw *hw;
	200
	201	hw = wl1251_alloc_hw();
	202	if (IS_ERR(hw))
	203	return PTR_ERR(hw);
	204
	205	wl = hw->priv;
	206
	207	sdio_claim_host(func);
	208	ret = sdio_enable_func(func);
	209	if (ret)
	210	goto release;
	211
	212	sdio_set_block_size(func, 512);
a02a2956	213	sdio_release_host(func);
3ec410d7 BC	214
	215	SET_IEEE80211_DEV(hw, &func->dev);
	216	wl->if_priv = func;
	217	wl->if_ops = &wl1251_sdio_ops;
	218	wl->set_power = wl1251_sdio_set_power;
	219
8c00b39f GI	220	if (wl12xx_board_data != NULL) {
8c00b39f GI	221	wl->set_power = wl12xx_board_data->set_power;
a02a2956	222	wl->irq = wl12xx_board_data->irq;
8c00b39f GI	223	wl->use_eeprom = wl12xx_board_data->use_eeprom;
	224	}
	225
a02a2956 GI	226	if (wl->irq) {
	227	ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl);
	228	if (ret < 0) {
	229	wl1251_error("request_irq() failed: %d", ret);
	230	goto disable;
	231	}
	232
	233	set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
	234	disable_irq(wl->irq);
	235
	236	wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
	237	wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
	238
	239	wl1251_info("using dedicated interrupt line");
	240	} else {
	241	wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
	242	wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
	243
	244	wl1251_info("using SDIO interrupt");
	245	}
	246
3ec410d7	247	ret = wl1251_init_ieee80211(wl);
3ec410d7	248	if (ret)
a02a2956	249	goto out_free_irq;
3ec410d7	250
3ec410d7 BC	251	sdio_set_drvdata(func, wl);
	252	return ret;
	253
a02a2956 GI	254	out_free_irq:
	255	if (wl->irq)
	256	free_irq(wl->irq, wl);
3ec410d7	257	disable:
b5ed9c1b	258	sdio_claim_host(func);
3ec410d7 BC	259	sdio_disable_func(func);
	260	release:
	261	sdio_release_host(func);
aa679c36	262	wl1251_free_hw(wl);
3ec410d7 BC	263	return ret;
	264	}
	265
	266	static void __devexit wl1251_sdio_remove(struct sdio_func *func)
	267	{
	268	struct wl1251 *wl = sdio_get_drvdata(func);
	269
a02a2956 GI	270	if (wl->irq)
a02a2956 GI	271	free_irq(wl->irq, wl);
3ec410d7 BC	272	wl1251_free_hw(wl);
	273
	274	sdio_claim_host(func);
	275	sdio_release_irq(func);
	276	sdio_disable_func(func);
	277	sdio_release_host(func);
	278	}
	279
	280	static struct sdio_driver wl1251_sdio_driver = {
	281	.name = "wl1251_sdio",
	282	.id_table = wl1251_devices,
	283	.probe = wl1251_sdio_probe,
	284	.remove = __devexit_p(wl1251_sdio_remove),
	285	};
	286
	287	static int __init wl1251_sdio_init(void)
	288	{
	289	int err;
	290
8c00b39f GI	291	err = platform_driver_register(&wl1251_platform_driver);
	292	if (err) {
	293	wl1251_error("failed to register platform driver: %d", err);
	294	return err;
	295	}
	296
3ec410d7 BC	297	err = sdio_register_driver(&wl1251_sdio_driver);
	298	if (err)
	299	wl1251_error("failed to register sdio driver: %d", err);
	300	return err;
	301	}
	302
	303	static void __exit wl1251_sdio_exit(void)
	304	{
	305	sdio_unregister_driver(&wl1251_sdio_driver);
8c00b39f	306	platform_driver_unregister(&wl1251_platform_driver);
3ec410d7 BC	307	wl1251_notice("unloaded");
	308	}
	309
	310	module_init(wl1251_sdio_init);
	311	module_exit(wl1251_sdio_exit);
	312
	313	MODULE_LICENSE("GPL");
b1b0a2b8	314	MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");