2 * This file is part of wl1271
4 * Copyright (C) 2009-2010 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
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.
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.
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
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 <linux/gpio.h>
32 #include <linux/wl12xx.h>
35 #include "wl12xx_80211.h"
36 #include "wl1271_io.h"
38 #ifndef SDIO_VENDOR_ID_TI
39 #define SDIO_VENDOR_ID_TI 0x0097
42 #ifndef SDIO_DEVICE_ID_TI_WL1271
43 #define SDIO_DEVICE_ID_TI_WL1271 0x4076
46 static const struct sdio_device_id wl1271_devices[] = {
47 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
50 MODULE_DEVICE_TABLE(sdio, wl1271_devices);
52 static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
57 static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
59 return &(wl_to_func(wl)->dev);
62 static irqreturn_t wl1271_irq(int irq, void *cookie)
64 struct wl1271 *wl = cookie;
67 wl1271_debug(DEBUG_IRQ, "IRQ");
69 /* complete the ELP completion */
70 spin_lock_irqsave(&wl->wl_lock, flags);
72 complete(wl->elp_compl);
76 if (!test_and_set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
77 ieee80211_queue_work(wl->hw, &wl->irq_work);
78 set_bit(WL1271_FLAG_IRQ_PENDING, &wl->flags);
79 spin_unlock_irqrestore(&wl->wl_lock, flags);
84 static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
89 static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
94 static void wl1271_sdio_reset(struct wl1271 *wl)
98 static void wl1271_sdio_init(struct wl1271 *wl)
102 static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
103 size_t len, bool fixed)
106 struct sdio_func *func = wl_to_func(wl);
108 sdio_claim_host(func);
110 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
111 ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
112 wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
113 addr, ((u8 *)buf)[0]);
116 ret = sdio_readsb(func, buf, addr, len);
118 ret = sdio_memcpy_fromio(func, buf, addr, len);
120 wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
122 wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
125 sdio_release_host(func);
128 wl1271_error("sdio read failed (%d)", ret);
131 static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
132 size_t len, bool fixed)
135 struct sdio_func *func = wl_to_func(wl);
137 sdio_claim_host(func);
139 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
140 sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
141 wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
142 addr, ((u8 *)buf)[0]);
144 wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
146 wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
149 ret = sdio_writesb(func, addr, buf, len);
151 ret = sdio_memcpy_toio(func, addr, buf, len);
154 sdio_release_host(func);
157 wl1271_error("sdio write failed (%d)", ret);
160 static int wl1271_sdio_power_on(struct wl1271 *wl)
162 struct sdio_func *func = wl_to_func(wl);
164 sdio_claim_host(func);
165 sdio_enable_func(func);
166 sdio_release_host(func);
171 static int wl1271_sdio_power_off(struct wl1271 *wl)
173 struct sdio_func *func = wl_to_func(wl);
175 sdio_claim_host(func);
176 sdio_disable_func(func);
177 sdio_release_host(func);
182 static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
184 /* Let the SDIO stack handle wlan_enable control, so we
185 * keep host claimed while wlan is in use to keep wl1271
189 return wl1271_sdio_power_on(wl);
191 return wl1271_sdio_power_off(wl);
194 static struct wl1271_if_operations sdio_ops = {
195 .read = wl1271_sdio_raw_read,
196 .write = wl1271_sdio_raw_write,
197 .reset = wl1271_sdio_reset,
198 .init = wl1271_sdio_init,
199 .power = wl1271_sdio_set_power,
200 .dev = wl1271_sdio_wl_to_dev,
201 .enable_irq = wl1271_sdio_enable_interrupts,
202 .disable_irq = wl1271_sdio_disable_interrupts
205 static int __devinit wl1271_probe(struct sdio_func *func,
206 const struct sdio_device_id *id)
208 struct ieee80211_hw *hw;
209 const struct wl12xx_platform_data *wlan_data;
213 /* We are only able to handle the wlan function */
214 if (func->num != 0x02)
217 hw = wl1271_alloc_hw();
224 wl->if_ops = &sdio_ops;
226 /* Grab access to FN0 for ELP reg. */
227 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
229 wlan_data = wl12xx_get_platform_data();
230 if (IS_ERR(wlan_data)) {
231 ret = PTR_ERR(wlan_data);
232 wl1271_error("missing wlan platform data: %d", ret);
236 wl->irq = wlan_data->irq;
238 ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
240 wl1271_error("request_irq() failed: %d", ret);
244 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
246 disable_irq(wl->irq);
248 ret = wl1271_init_ieee80211(wl);
252 ret = wl1271_register_hw(wl);
256 sdio_set_drvdata(func, wl);
258 wl1271_notice("initialized");
263 free_irq(wl->irq, wl);
272 static void __devexit wl1271_remove(struct sdio_func *func)
274 struct wl1271 *wl = sdio_get_drvdata(func);
276 free_irq(wl->irq, wl);
278 wl1271_unregister_hw(wl);
282 static struct sdio_driver wl1271_sdio_driver = {
283 .name = "wl1271_sdio",
284 .id_table = wl1271_devices,
285 .probe = wl1271_probe,
286 .remove = __devexit_p(wl1271_remove),
289 static int __init wl1271_init(void)
293 ret = sdio_register_driver(&wl1271_sdio_driver);
295 wl1271_error("failed to register sdio driver: %d", ret);
303 static void __exit wl1271_exit(void)
305 sdio_unregister_driver(&wl1271_sdio_driver);
307 wl1271_notice("unloaded");
310 module_init(wl1271_init);
311 module_exit(wl1271_exit);
313 MODULE_LICENSE("GPL");
314 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
315 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
316 MODULE_FIRMWARE(WL1271_FW_NAME);