[deliverable/linux.git] / drivers / net / wireless / wl12xx / wl1271_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/crc7.h>
#include <linux/vmalloc.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
#include <plat/gpio.h>

#include "wl1271.h"
#include "wl12xx_80211.h"
#include "wl1271_io.h"


#define RX71_WL1271_IRQ_GPIO		42

#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 const struct sdio_device_id wl1271_devices[] = {
	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	{}
};
MODULE_DEVICE_TABLE(sdio, wl1271_devices);

static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
{
	return wl->if_priv;
}

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

static irqreturn_t wl1271_irq(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);
	if (wl->elp_compl) {
		complete(wl->elp_compl);
		wl->elp_compl = NULL;
	}

	if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
		ieee80211_queue_work(wl->hw, &wl->irq_work);
	set_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
	spin_unlock_irqrestore(&wl->wl_lock, flags);

	return IRQ_HANDLED;
}

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_reset(struct wl1271 *wl)
{
}

static void wl1271_sdio_init(struct wl1271 *wl)
{
}

static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
				 size_t len, bool fixed)
{
	int ret;
	struct sdio_func *func = wl_to_func(wl);

	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, %d 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 sdio_func *func = wl_to_func(wl);

	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, %d 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 void wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
{
	struct sdio_func *func = wl_to_func(wl);

	/* Let the SDIO stack handle wlan_enable control, so we
	 * keep host claimed while wlan is in use to keep wl1271
	 * alive.
	 */
	if (enable) {
		sdio_claim_host(func);
		sdio_enable_func(func);
	} else {
		sdio_disable_func(func);
		sdio_release_host(func);
	}
}

static struct wl1271_if_operations sdio_ops = {
	.read		= wl1271_sdio_raw_read,
	.write		= wl1271_sdio_raw_write,
	.reset		= wl1271_sdio_reset,
	.init		= wl1271_sdio_init,
	.power		= wl1271_sdio_set_power,
	.dev		= wl1271_sdio_wl_to_dev,
	.enable_irq	= wl1271_sdio_enable_interrupts,
	.disable_irq	= wl1271_sdio_disable_interrupts
};

static int __devinit wl1271_probe(struct sdio_func *func,
				  const struct sdio_device_id *id)
{
	struct ieee80211_hw *hw;
	struct wl1271 *wl;
	int ret;

	/* We are only able to handle the wlan function */
	if (func->num != 0x02)
		return -ENODEV;

	hw = wl1271_alloc_hw();
	if (IS_ERR(hw))
		return PTR_ERR(hw);

	wl = hw->priv;

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

	/* Grab access to FN0 for ELP reg. */
	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;

	wl->irq = gpio_to_irq(RX71_WL1271_IRQ_GPIO);
	if (wl->irq < 0) {
		ret = wl->irq;
		wl1271_error("could not get irq!");
		goto out_free;
	}

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

	set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);

	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, wl);

	wl1271_notice("initialized");

	return 0;

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


 out_free:
	ieee80211_free_hw(hw);

	return ret;
}

static void __devexit wl1271_remove(struct sdio_func *func)
{
	struct wl1271 *wl = sdio_get_drvdata(func);

	ieee80211_unregister_hw(wl->hw);

	free_irq(wl->irq, wl);

	kfree(wl->target_mem_map);
	vfree(wl->fw);
	wl->fw = NULL;
	kfree(wl->nvs);
	wl->nvs = NULL;

	kfree(wl->fw_status);
	kfree(wl->tx_res_if);

	ieee80211_free_hw(wl->hw);
}

static struct sdio_driver wl1271_sdio_driver = {
	.name		= "wl1271",
	.id_table	= wl1271_devices,
	.probe		= wl1271_probe,
	.remove		= __devexit_p(wl1271_remove),
};

static int __init wl1271_init(void)
{
	int ret;

	ret = sdio_register_driver(&wl1271_sdio_driver);
	if (ret < 0) {
		wl1271_error("failed to register sdio driver: %d", ret);
		goto out;
	}

out:
	return ret;
}

static void __exit wl1271_exit(void)
{
	sdio_unregister_driver(&wl1271_sdio_driver);

	wl1271_notice("unloaded");
}

module_init(wl1271_init);
module_exit(wl1271_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
MODULE_FIRMWARE(WL1271_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>
	26	#include <linux/crc7.h>
	27	#include <linux/vmalloc.h>
	28	#include <linux/mmc/sdio_func.h>
	29	#include <linux/mmc/sdio_ids.h>
	30	#include <linux/mmc/card.h>
	31	#include <plat/gpio.h>
	32
	33	#include "wl1271.h"
	34	#include "wl12xx_80211.h"
	35	#include "wl1271_io.h"
	36
	37
	38	#define RX71_WL1271_IRQ_GPIO 42
	39
	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
	48	static const struct sdio_device_id wl1271_devices[] = {
	49	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
	50	{}
	51	};
	52	MODULE_DEVICE_TABLE(sdio, wl1271_devices);
	53
	54	static inline struct sdio_func wl_to_func(struct wl1271 wl)
	55	{
	56	return wl->if_priv;
	57	}
	58
	59	static struct device wl1271_sdio_wl_to_dev(struct wl1271 wl)
	60	{
	61	return &(wl_to_func(wl)->dev);
	62	}
	63
	64	static irqreturn_t wl1271_irq(int irq, void *cookie)
65	{
66	struct wl1271 *wl = cookie;
67	unsigned long flags;
68
69	wl1271_debug(DEBUG_IRQ, "IRQ");
70
71	/* complete the ELP completion */
72	spin_lock_irqsave(&wl->wl_lock, flags);
73	if (wl->elp_compl) {
74	complete(wl->elp_compl);
75	wl->elp_compl = NULL;
76	}
77
1e73eb62 JO	78	if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
	79	ieee80211_queue_work(wl->hw, &wl->irq_work);
	80	set_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
5129dffe TP	81	spin_unlock_irqrestore(&wl->wl_lock, flags);
	82
	83	return IRQ_HANDLED;
	84	}
	85
	86	static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
	87	{
	88	disable_irq(wl->irq);
	89	}
	90
	91	static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
	92	{
	93	enable_irq(wl->irq);
	94	}
	95
	96	static void wl1271_sdio_reset(struct wl1271 *wl)
	97	{
	98	}
	99
	100	static void wl1271_sdio_init(struct wl1271 *wl)
	101	{
	102	}
	103
	104	static void wl1271_sdio_raw_read(struct wl1271 wl, int addr, void buf,
a3b8ea75	105	size_t len, bool fixed)
5129dffe TP	106	{
	107	int ret;
	108	struct sdio_func *func = wl_to_func(wl);
	109
5129dffe TP	110	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	111	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
a3b8ea75	112	wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
5129dffe TP	113	addr, ((u8 *)buf)[0]);
	114	} else {
	115	if (fixed)
	116	ret = sdio_readsb(func, buf, addr, len);
	117	else
	118	ret = sdio_memcpy_fromio(func, buf, addr, len);
	119
a3b8ea75	120	wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %d bytes",
5129dffe	121	addr, len);
a3b8ea75	122	wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
5129dffe TP	123	}
	124
	125	if (ret)
	126	wl1271_error("sdio read failed (%d)", ret);
	127
5129dffe TP	128	}
	129
	130	static void wl1271_sdio_raw_write(struct wl1271 wl, int addr, void buf,
a3b8ea75	131	size_t len, bool fixed)
5129dffe TP	132	{
	133	int ret;
	134	struct sdio_func *func = wl_to_func(wl);
	135
5129dffe TP	136	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
5129dffe TP	137	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
a3b8ea75	138	wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
5129dffe TP	139	addr, ((u8 *)buf)[0]);
5129dffe TP	140	} else {
a3b8ea75	141	wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %d bytes",
5129dffe	142	addr, len);
a3b8ea75	143	wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
5129dffe TP	144
	145	if (fixed)
	146	ret = sdio_writesb(func, addr, buf, len);
	147	else
	148	ret = sdio_memcpy_toio(func, addr, buf, len);
	149	}
	150	if (ret)
	151	wl1271_error("sdio write failed (%d)", ret);
	152
5129dffe TP	153	}
5129dffe TP	154
becd551c TP	155	static void wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
becd551c TP	156	{
93f56be1 TP	157	struct sdio_func *func = wl_to_func(wl);
93f56be1 TP	158
a3b8ea75 TP	159	/* Let the SDIO stack handle wlan_enable control, so we
	160	* keep host claimed while wlan is in use to keep wl1271
	161	* alive.
	162	*/
93f56be1 TP	163	if (enable) {
	164	sdio_claim_host(func);
	165	sdio_enable_func(func);
	166	} else {
	167	sdio_disable_func(func);
	168	sdio_release_host(func);
	169	}
becd551c TP	170	}
becd551c TP	171
5129dffe TP	172	static struct wl1271_if_operations sdio_ops = {
	173	.read = wl1271_sdio_raw_read,
	174	.write = wl1271_sdio_raw_write,
	175	.reset = wl1271_sdio_reset,
	176	.init = wl1271_sdio_init,
becd551c	177	.power = wl1271_sdio_set_power,
5129dffe TP	178	.dev = wl1271_sdio_wl_to_dev,
	179	.enable_irq = wl1271_sdio_enable_interrupts,
	180	.disable_irq = wl1271_sdio_disable_interrupts
	181	};
	182
5129dffe TP	183	static int __devinit wl1271_probe(struct sdio_func *func,
	184	const struct sdio_device_id *id)
	185	{
	186	struct ieee80211_hw *hw;
	187	struct wl1271 *wl;
	188	int ret;
	189
	190	/* We are only able to handle the wlan function */
	191	if (func->num != 0x02)
	192	return -ENODEV;
	193
	194	hw = wl1271_alloc_hw();
	195	if (IS_ERR(hw))
	196	return PTR_ERR(hw);
	197
	198	wl = hw->priv;
	199
	200	wl->if_priv = func;
	201	wl->if_ops = &sdio_ops;
	202
5129dffe TP	203	/* Grab access to FN0 for ELP reg. */
	204	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
	205
	206	wl->irq = gpio_to_irq(RX71_WL1271_IRQ_GPIO);
	207	if (wl->irq < 0) {
	208	ret = wl->irq;
	209	wl1271_error("could not get irq!");
	210	goto out_free;
	211	}
	212
	213	ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
	214	if (ret < 0) {
	215	wl1271_error("request_irq() failed: %d", ret);
	216	goto out_free;
	217	}
	218
	219	set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
	220
	221	disable_irq(wl->irq);
	222
	223	ret = wl1271_init_ieee80211(wl);
	224	if (ret)
	225	goto out_irq;
	226
	227	ret = wl1271_register_hw(wl);
	228	if (ret)
	229	goto out_irq;
	230
49d7f6d8 TP	231	sdio_set_drvdata(func, wl);
49d7f6d8 TP	232
5129dffe TP	233	wl1271_notice("initialized");
	234
	235	return 0;
	236
5129dffe TP	237	out_irq:
	238	free_irq(wl->irq, wl);
	239
	240
	241	out_free:
	242	ieee80211_free_hw(hw);
	243
	244	return ret;
	245	}
	246
	247	static void __devexit wl1271_remove(struct sdio_func *func)
	248	{
	249	struct wl1271 *wl = sdio_get_drvdata(func);
	250
49d7f6d8 TP	251	ieee80211_unregister_hw(wl->hw);
49d7f6d8 TP	252
5129dffe TP	253	free_irq(wl->irq, wl);
	254
	255	kfree(wl->target_mem_map);
	256	vfree(wl->fw);
	257	wl->fw = NULL;
	258	kfree(wl->nvs);
	259	wl->nvs = NULL;
	260
	261	kfree(wl->fw_status);
	262	kfree(wl->tx_res_if);
	263
	264	ieee80211_free_hw(wl->hw);
	265	}
	266
	267	static struct sdio_driver wl1271_sdio_driver = {
	268	.name = "wl1271",
	269	.id_table = wl1271_devices,
	270	.probe = wl1271_probe,
	271	.remove = __devexit_p(wl1271_remove),
	272	};
	273
	274	static int __init wl1271_init(void)
	275	{
	276	int ret;
	277
	278	ret = sdio_register_driver(&wl1271_sdio_driver);
	279	if (ret < 0) {
	280	wl1271_error("failed to register sdio driver: %d", ret);
	281	goto out;
	282	}
	283
	284	out:
	285	return ret;
	286	}
	287
	288	static void __exit wl1271_exit(void)
	289	{
	290	sdio_unregister_driver(&wl1271_sdio_driver);
	291
	292	wl1271_notice("unloaded");
	293	}
	294
	295	module_init(wl1271_init);
	296	module_exit(wl1271_exit);
	297
	298	MODULE_LICENSE("GPL");
	299	MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
	300	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
	301	MODULE_FIRMWARE(WL1271_FW_NAME);