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/mmc/host.h>
32 #include <linux/gpio.h>
33 #include <linux/wl12xx.h>
34 #include <linux/pm_runtime.h>
37 #include "wl12xx_80211.h"
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);
167 /* Make sure the card will not be powered off by runtime PM */
168 ret = pm_runtime_get_sync(&func->dev);
172 /* Runtime PM might be disabled, so power up the card manually */
173 ret = mmc_power_restore_host(func->card->host);
177 sdio_claim_host(func);
178 sdio_enable_func(func);
179 sdio_release_host(func);
185 static int wl1271_sdio_power_off(struct wl1271 *wl)
187 struct sdio_func *func = wl_to_func(wl);
190 sdio_claim_host(func);
191 sdio_disable_func(func);
192 sdio_release_host(func);
194 /* Runtime PM might be disabled, so power off the card manually */
195 ret = mmc_power_save_host(func->card->host);
199 /* Let runtime PM know the card is powered off */
200 return pm_runtime_put_sync(&func->dev);
203 static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
206 return wl1271_sdio_power_on(wl);
208 return wl1271_sdio_power_off(wl);
211 static struct wl1271_if_operations sdio_ops = {
212 .read = wl1271_sdio_raw_read,
213 .write = wl1271_sdio_raw_write,
214 .reset = wl1271_sdio_reset,
215 .init = wl1271_sdio_init,
216 .power = wl1271_sdio_set_power,
217 .dev = wl1271_sdio_wl_to_dev,
218 .enable_irq = wl1271_sdio_enable_interrupts,
219 .disable_irq = wl1271_sdio_disable_interrupts
222 static int __devinit wl1271_probe(struct sdio_func *func,
223 const struct sdio_device_id *id)
225 struct ieee80211_hw *hw;
226 const struct wl12xx_platform_data *wlan_data;
230 /* We are only able to handle the wlan function */
231 if (func->num != 0x02)
234 hw = wl1271_alloc_hw();
241 wl->if_ops = &sdio_ops;
243 /* Grab access to FN0 for ELP reg. */
244 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
246 wlan_data = wl12xx_get_platform_data();
247 if (IS_ERR(wlan_data)) {
248 ret = PTR_ERR(wlan_data);
249 wl1271_error("missing wlan platform data: %d", ret);
253 wl->irq = wlan_data->irq;
254 wl->ref_clock = wlan_data->board_ref_clock;
256 ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
258 wl1271_error("request_irq() failed: %d", ret);
262 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
264 disable_irq(wl->irq);
266 ret = wl1271_init_ieee80211(wl);
270 ret = wl1271_register_hw(wl);
274 sdio_set_drvdata(func, wl);
276 /* Tell PM core that we don't need the card to be powered now */
277 pm_runtime_put_noidle(&func->dev);
279 wl1271_notice("initialized");
284 free_irq(wl->irq, wl);
293 static void __devexit wl1271_remove(struct sdio_func *func)
295 struct wl1271 *wl = sdio_get_drvdata(func);
297 /* Undo decrement done above in wl1271_probe */
298 pm_runtime_get_noresume(&func->dev);
300 wl1271_unregister_hw(wl);
301 free_irq(wl->irq, wl);
305 static int wl1271_suspend(struct device *dev)
307 /* Tell MMC/SDIO core it's OK to power down the card
308 * (if it isn't already), but not to remove it completely */
312 static int wl1271_resume(struct device *dev)
317 static const struct dev_pm_ops wl1271_sdio_pm_ops = {
318 .suspend = wl1271_suspend,
319 .resume = wl1271_resume,
322 static struct sdio_driver wl1271_sdio_driver = {
323 .name = "wl1271_sdio",
324 .id_table = wl1271_devices,
325 .probe = wl1271_probe,
326 .remove = __devexit_p(wl1271_remove),
328 .pm = &wl1271_sdio_pm_ops,
332 static int __init wl1271_init(void)
336 ret = sdio_register_driver(&wl1271_sdio_driver);
338 wl1271_error("failed to register sdio driver: %d", ret);
346 static void __exit wl1271_exit(void)
348 sdio_unregister_driver(&wl1271_sdio_driver);
350 wl1271_notice("unloaded");
353 module_init(wl1271_init);
354 module_exit(wl1271_exit);
356 MODULE_LICENSE("GPL");
357 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
358 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
359 MODULE_FIRMWARE(WL1271_FW_NAME);
360 MODULE_FIRMWARE(WL1271_AP_FW_NAME);