[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;
	}

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

	sdio_claim_host(func);
	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
		((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
		wl1271_debug(DEBUG_SPI, "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_SPI, "sdio read 53 addr 0x%x, %d bytes",
			     addr, len);
		wl1271_dump_ascii(DEBUG_SPI, "data: ", buf, len);
	}

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

	sdio_release_host(func);
}

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);

	sdio_claim_host(func);
	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
		sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
		wl1271_debug(DEBUG_SPI, "sdio write 52 addr 0x%x, byte 0x%02x",
			     addr, ((u8 *)buf)[0]);
	} else {
		wl1271_debug(DEBUG_SPI, "sdio write 53 addr 0x%x, %d bytes",
			     addr, len);
		wl1271_dump_ascii(DEBUG_SPI, "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);

	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,
	.dev		= wl1271_sdio_wl_to_dev,
	.enable_irq	= wl1271_sdio_enable_interrupts,
	.disable_irq	= wl1271_sdio_disable_interrupts
};

static void wl1271_sdio_set_power(bool enable)
{
}

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;

	wl->set_power = wl1271_sdio_set_power;

	/* 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_claim_host(func);
	sdio_set_drvdata(func, wl);

	ret = sdio_enable_func(func);
	if (ret)
		goto out_release;

	sdio_release_host(func);

	wl1271_notice("initialized");

	return 0;

 out_release:
	sdio_release_host(func);

 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);

	sdio_claim_host(func);
	sdio_disable_func(func);
	sdio_release_host(func);

	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
78	ieee80211_queue_work(wl->hw, &wl->irq_work);
79	spin_unlock_irqrestore(&wl->wl_lock, flags);
80
81	return IRQ_HANDLED;
82	}
83
84	static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
85	{
86	disable_irq(wl->irq);
87	}
88
89	static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
90	{
91	enable_irq(wl->irq);
92	}
93
94	static void wl1271_sdio_reset(struct wl1271 *wl)
95	{
96	}
97
98	static void wl1271_sdio_init(struct wl1271 *wl)
99	{
100	}
101
102	static void wl1271_sdio_raw_read(struct wl1271 wl, int addr, void buf,
103	size_t len, bool fixed)
104	{
105	int ret;
106	struct sdio_func *func = wl_to_func(wl);
107
108	sdio_claim_host(func);
109	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
110	((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
111	wl1271_debug(DEBUG_SPI, "sdio read 52 addr 0x%x, byte 0x%02x",
112	addr, ((u8 *)buf)[0]);
113	} else {
114	if (fixed)
115	ret = sdio_readsb(func, buf, addr, len);
116	else
117	ret = sdio_memcpy_fromio(func, buf, addr, len);
118
119	wl1271_debug(DEBUG_SPI, "sdio read 53 addr 0x%x, %d bytes",
120	addr, len);
121	wl1271_dump_ascii(DEBUG_SPI, "data: ", buf, len);
122	}
123
124	if (ret)
125	wl1271_error("sdio read failed (%d)", ret);
126
127	sdio_release_host(func);
128	}
129
130	static void wl1271_sdio_raw_write(struct wl1271 wl, int addr, void buf,
131	size_t len, bool fixed)
132	{
133	int ret;
134	struct sdio_func *func = wl_to_func(wl);
135
136	sdio_claim_host(func);
137	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
138	sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
139	wl1271_debug(DEBUG_SPI, "sdio write 52 addr 0x%x, byte 0x%02x",
140	addr, ((u8 *)buf)[0]);
141	} else {
142	wl1271_debug(DEBUG_SPI, "sdio write 53 addr 0x%x, %d bytes",
143	addr, len);
144	wl1271_dump_ascii(DEBUG_SPI, "data: ", buf, len);
145
146	if (fixed)
147	ret = sdio_writesb(func, addr, buf, len);
148	else
149	ret = sdio_memcpy_toio(func, addr, buf, len);
150	}
151	if (ret)
152	wl1271_error("sdio write failed (%d)", ret);
153
154	sdio_release_host(func);
155	}
156
157	static struct wl1271_if_operations sdio_ops = {
158	.read = wl1271_sdio_raw_read,
159	.write = wl1271_sdio_raw_write,
160	.reset = wl1271_sdio_reset,
161	.init = wl1271_sdio_init,
162	.dev = wl1271_sdio_wl_to_dev,
163	.enable_irq = wl1271_sdio_enable_interrupts,
164	.disable_irq = wl1271_sdio_disable_interrupts
165	};
166
167	static void wl1271_sdio_set_power(bool enable)
168	{
169	}
170
171	static int __devinit wl1271_probe(struct sdio_func *func,
172	const struct sdio_device_id *id)
173	{
174	struct ieee80211_hw *hw;
175	struct wl1271 *wl;
176	int ret;
177
178	/* We are only able to handle the wlan function */
179	if (func->num != 0x02)
180	return -ENODEV;
181
182	hw = wl1271_alloc_hw();
183	if (IS_ERR(hw))
184	return PTR_ERR(hw);
185
186	wl = hw->priv;
187
188	wl->if_priv = func;
189	wl->if_ops = &sdio_ops;
190
191	wl->set_power = wl1271_sdio_set_power;
192
193	/* Grab access to FN0 for ELP reg. */
194	func->card->quirks \|= MMC_QUIRK_LENIENT_FN0;
195
196	wl->irq = gpio_to_irq(RX71_WL1271_IRQ_GPIO);
197	if (wl->irq < 0) {
198	ret = wl->irq;
199	wl1271_error("could not get irq!");
200	goto out_free;
201	}
202
203	ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
204	if (ret < 0) {
205	wl1271_error("request_irq() failed: %d", ret);
206	goto out_free;
207	}
208
209	set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
210
211	disable_irq(wl->irq);
212
213	ret = wl1271_init_ieee80211(wl);
214	if (ret)
215	goto out_irq;
216
217	ret = wl1271_register_hw(wl);
218	if (ret)
219	goto out_irq;
220
221	sdio_claim_host(func);
49d7f6d8 TP	222	sdio_set_drvdata(func, wl);
49d7f6d8 TP	223
5129dffe TP	224	ret = sdio_enable_func(func);
	225	if (ret)
	226	goto out_release;
	227
	228	sdio_release_host(func);
	229
	230	wl1271_notice("initialized");
	231
	232	return 0;
	233
	234	out_release:
	235	sdio_release_host(func);
	236
	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	sdio_claim_host(func);
	254	sdio_disable_func(func);
	255	sdio_release_host(func);
5129dffe TP	256
	257	free_irq(wl->irq, wl);
	258
	259	kfree(wl->target_mem_map);
	260	vfree(wl->fw);
	261	wl->fw = NULL;
	262	kfree(wl->nvs);
	263	wl->nvs = NULL;
	264
	265	kfree(wl->fw_status);
	266	kfree(wl->tx_res_if);
	267
	268	ieee80211_free_hw(wl->hw);
	269	}
	270
	271	static struct sdio_driver wl1271_sdio_driver = {
	272	.name = "wl1271",
	273	.id_table = wl1271_devices,
	274	.probe = wl1271_probe,
	275	.remove = __devexit_p(wl1271_remove),
	276	};
	277
	278	static int __init wl1271_init(void)
	279	{
	280	int ret;
	281
	282	ret = sdio_register_driver(&wl1271_sdio_driver);
	283	if (ret < 0) {
	284	wl1271_error("failed to register sdio driver: %d", ret);
	285	goto out;
	286	}
	287
	288	out:
	289	return ret;
	290	}
	291
	292	static void __exit wl1271_exit(void)
	293	{
	294	sdio_unregister_driver(&wl1271_sdio_driver);
	295
	296	wl1271_notice("unloaded");
	297	}
	298
	299	module_init(wl1271_init);
	300	module_exit(wl1271_exit);
	301
	302	MODULE_LICENSE("GPL");
	303	MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
	304	MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
	305	MODULE_FIRMWARE(WL1271_FW_NAME);