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>
34 #include "wl12xx_80211.h"
35 #include "wl1271_io.h"
38 #define RX71_WL1271_IRQ_GPIO 42
40 #ifndef SDIO_VENDOR_ID_TI
41 #define SDIO_VENDOR_ID_TI 0x0097
44 #ifndef SDIO_DEVICE_ID_TI_WL1271
45 #define SDIO_DEVICE_ID_TI_WL1271 0x4076
48 static const struct sdio_device_id wl1271_devices[] = {
49 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
52 MODULE_DEVICE_TABLE(sdio, wl1271_devices);
54 static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
59 static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
61 return &(wl_to_func(wl)->dev);
64 static irqreturn_t wl1271_irq(int irq, void *cookie)
66 struct wl1271 *wl = cookie;
69 wl1271_debug(DEBUG_IRQ, "IRQ");
71 /* complete the ELP completion */
72 spin_lock_irqsave(&wl->wl_lock, flags);
74 complete(wl->elp_compl);
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);
81 spin_unlock_irqrestore(&wl->wl_lock, flags);
86 static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
91 static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
96 static void wl1271_sdio_reset(struct wl1271 *wl)
100 static void wl1271_sdio_init(struct wl1271 *wl)
104 static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
105 size_t len, bool fixed)
108 struct sdio_func *func = wl_to_func(wl);
110 sdio_claim_host(func);
112 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
113 ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
114 wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
115 addr, ((u8 *)buf)[0]);
118 ret = sdio_readsb(func, buf, addr, len);
120 ret = sdio_memcpy_fromio(func, buf, addr, len);
122 wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
124 wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
127 sdio_release_host(func);
130 wl1271_error("sdio read failed (%d)", ret);
133 static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
134 size_t len, bool fixed)
137 struct sdio_func *func = wl_to_func(wl);
139 sdio_claim_host(func);
141 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
142 sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
143 wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
144 addr, ((u8 *)buf)[0]);
146 wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
148 wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
151 ret = sdio_writesb(func, addr, buf, len);
153 ret = sdio_memcpy_toio(func, addr, buf, len);
156 sdio_release_host(func);
159 wl1271_error("sdio write failed (%d)", ret);
162 static int wl1271_sdio_power_on(struct wl1271 *wl)
164 struct sdio_func *func = wl_to_func(wl);
166 sdio_claim_host(func);
167 sdio_enable_func(func);
168 sdio_release_host(func);
173 static int wl1271_sdio_power_off(struct wl1271 *wl)
175 struct sdio_func *func = wl_to_func(wl);
177 sdio_claim_host(func);
178 sdio_disable_func(func);
179 sdio_release_host(func);
184 static void wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
186 struct sdio_func *func = wl_to_func(wl);
188 /* Let the SDIO stack handle wlan_enable control, so we
189 * keep host claimed while wlan is in use to keep wl1271
193 return wl1271_sdio_power_on(wl);
195 return wl1271_sdio_power_off(wl);
199 static struct wl1271_if_operations sdio_ops = {
200 .read = wl1271_sdio_raw_read,
201 .write = wl1271_sdio_raw_write,
202 .reset = wl1271_sdio_reset,
203 .init = wl1271_sdio_init,
204 .power = wl1271_sdio_set_power,
205 .dev = wl1271_sdio_wl_to_dev,
206 .enable_irq = wl1271_sdio_enable_interrupts,
207 .disable_irq = wl1271_sdio_disable_interrupts
210 static int __devinit wl1271_probe(struct sdio_func *func,
211 const struct sdio_device_id *id)
213 struct ieee80211_hw *hw;
217 /* We are only able to handle the wlan function */
218 if (func->num != 0x02)
221 hw = wl1271_alloc_hw();
228 wl->if_ops = &sdio_ops;
230 /* Grab access to FN0 for ELP reg. */
231 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
233 wl->irq = gpio_to_irq(RX71_WL1271_IRQ_GPIO);
236 wl1271_error("could not get irq!");
240 ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
242 wl1271_error("request_irq() failed: %d", ret);
246 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
248 disable_irq(wl->irq);
250 ret = wl1271_init_ieee80211(wl);
254 ret = wl1271_register_hw(wl);
258 sdio_set_drvdata(func, wl);
260 wl1271_notice("initialized");
265 free_irq(wl->irq, wl);
274 static void __devexit wl1271_remove(struct sdio_func *func)
276 struct wl1271 *wl = sdio_get_drvdata(func);
278 free_irq(wl->irq, wl);
280 wl1271_unregister_hw(wl);
284 static struct sdio_driver wl1271_sdio_driver = {
285 .name = "wl1271_sdio",
286 .id_table = wl1271_devices,
287 .probe = wl1271_probe,
288 .remove = __devexit_p(wl1271_remove),
291 static int __init wl1271_init(void)
295 ret = sdio_register_driver(&wl1271_sdio_driver);
297 wl1271_error("failed to register sdio driver: %d", ret);
305 static void __exit wl1271_exit(void)
307 sdio_unregister_driver(&wl1271_sdio_driver);
309 wl1271_notice("unloaded");
312 module_init(wl1271_init);
313 module_exit(wl1271_exit);
315 MODULE_LICENSE("GPL");
316 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
317 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
318 MODULE_FIRMWARE(WL1271_FW_NAME);