wl12xx: 1281/1283 support - Use different FW file for AP mode wl127x/wl128x chips
[linux-2.6.git] / drivers / net / wireless / wl12xx / sdio.c
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 <linux/mmc/host.h>
32 #include <linux/gpio.h>
33 #include <linux/wl12xx.h>
34 #include <linux/pm_runtime.h>
35
36 #include "wl12xx.h"
37 #include "wl12xx_80211.h"
38 #include "io.h"
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 /* The max SDIO block size is 256 when working with tx padding to SDIO block */
55 #define TX_PAD_SDIO_BLK_SIZE                  256
56
57 static void wl1271_sdio_set_block_size(struct wl1271 *wl)
58 {
59         wl->block_size = TX_PAD_SDIO_BLK_SIZE;
60
61         sdio_claim_host(wl->if_priv);
62         sdio_set_block_size(wl->if_priv, TX_PAD_SDIO_BLK_SIZE);
63         sdio_release_host(wl->if_priv);
64 }
65
66 static inline struct sdio_func *wl_to_func(struct wl1271 *wl)
67 {
68         return wl->if_priv;
69 }
70
71 static struct device *wl1271_sdio_wl_to_dev(struct wl1271 *wl)
72 {
73         return &(wl_to_func(wl)->dev);
74 }
75
76 static irqreturn_t wl1271_hardirq(int irq, void *cookie)
77 {
78         struct wl1271 *wl = cookie;
79         unsigned long flags;
80
81         wl1271_debug(DEBUG_IRQ, "IRQ");
82
83         /* complete the ELP completion */
84         spin_lock_irqsave(&wl->wl_lock, flags);
85         set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
86         if (wl->elp_compl) {
87                 complete(wl->elp_compl);
88                 wl->elp_compl = NULL;
89         }
90         spin_unlock_irqrestore(&wl->wl_lock, flags);
91
92         return IRQ_WAKE_THREAD;
93 }
94
95 static void wl1271_sdio_disable_interrupts(struct wl1271 *wl)
96 {
97         disable_irq(wl->irq);
98 }
99
100 static void wl1271_sdio_enable_interrupts(struct wl1271 *wl)
101 {
102         enable_irq(wl->irq);
103 }
104
105 static void wl1271_sdio_reset(struct wl1271 *wl)
106 {
107 }
108
109 static void wl1271_sdio_init(struct wl1271 *wl)
110 {
111 }
112
113 static void wl1271_sdio_raw_read(struct wl1271 *wl, int addr, void *buf,
114                                  size_t len, bool fixed)
115 {
116         int ret;
117         struct sdio_func *func = wl_to_func(wl);
118
119         if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
120                 ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
121                 wl1271_debug(DEBUG_SDIO, "sdio read 52 addr 0x%x, byte 0x%02x",
122                              addr, ((u8 *)buf)[0]);
123         } else {
124                 if (fixed)
125                         ret = sdio_readsb(func, buf, addr, len);
126                 else
127                         ret = sdio_memcpy_fromio(func, buf, addr, len);
128
129                 wl1271_debug(DEBUG_SDIO, "sdio read 53 addr 0x%x, %zu bytes",
130                              addr, len);
131                 wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
132         }
133
134         if (ret)
135                 wl1271_error("sdio read failed (%d)", ret);
136 }
137
138 static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf,
139                                   size_t len, bool fixed)
140 {
141         int ret;
142         struct sdio_func *func = wl_to_func(wl);
143
144         if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
145                 sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
146                 wl1271_debug(DEBUG_SDIO, "sdio write 52 addr 0x%x, byte 0x%02x",
147                              addr, ((u8 *)buf)[0]);
148         } else {
149                 wl1271_debug(DEBUG_SDIO, "sdio write 53 addr 0x%x, %zu bytes",
150                              addr, len);
151                 wl1271_dump_ascii(DEBUG_SDIO, "data: ", buf, len);
152
153                 if (fixed)
154                         ret = sdio_writesb(func, addr, buf, len);
155                 else
156                         ret = sdio_memcpy_toio(func, addr, buf, len);
157         }
158
159         if (ret)
160                 wl1271_error("sdio write failed (%d)", ret);
161 }
162
163 static int wl1271_sdio_power_on(struct wl1271 *wl)
164 {
165         struct sdio_func *func = wl_to_func(wl);
166         int ret;
167
168         /* Make sure the card will not be powered off by runtime PM */
169         ret = pm_runtime_get_sync(&func->dev);
170         if (ret < 0)
171                 goto out;
172
173         /* Runtime PM might be disabled, so power up the card manually */
174         ret = mmc_power_restore_host(func->card->host);
175         if (ret < 0)
176                 goto out;
177
178         sdio_claim_host(func);
179         sdio_enable_func(func);
180
181         /* Set the default block size in case it was modified */
182         sdio_set_block_size(func, 0);
183
184 out:
185         return ret;
186 }
187
188 static int wl1271_sdio_power_off(struct wl1271 *wl)
189 {
190         struct sdio_func *func = wl_to_func(wl);
191         int ret;
192
193         sdio_disable_func(func);
194         sdio_release_host(func);
195
196         /* Runtime PM might be disabled, so power off the card manually */
197         ret = mmc_power_save_host(func->card->host);
198         if (ret < 0)
199                 return ret;
200
201         /* Let runtime PM know the card is powered off */
202         return pm_runtime_put_sync(&func->dev);
203 }
204
205 static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable)
206 {
207         if (enable)
208                 return wl1271_sdio_power_on(wl);
209         else
210                 return wl1271_sdio_power_off(wl);
211 }
212
213 static struct wl1271_if_operations sdio_ops = {
214         .read           = wl1271_sdio_raw_read,
215         .write          = wl1271_sdio_raw_write,
216         .reset          = wl1271_sdio_reset,
217         .init           = wl1271_sdio_init,
218         .power          = wl1271_sdio_set_power,
219         .dev            = wl1271_sdio_wl_to_dev,
220         .enable_irq     = wl1271_sdio_enable_interrupts,
221         .disable_irq    = wl1271_sdio_disable_interrupts,
222         .set_block_size = wl1271_sdio_set_block_size,
223 };
224
225 static int __devinit wl1271_probe(struct sdio_func *func,
226                                   const struct sdio_device_id *id)
227 {
228         struct ieee80211_hw *hw;
229         const struct wl12xx_platform_data *wlan_data;
230         struct wl1271 *wl;
231         int ret;
232
233         /* We are only able to handle the wlan function */
234         if (func->num != 0x02)
235                 return -ENODEV;
236
237         hw = wl1271_alloc_hw();
238         if (IS_ERR(hw))
239                 return PTR_ERR(hw);
240
241         wl = hw->priv;
242
243         wl->if_priv = func;
244         wl->if_ops = &sdio_ops;
245
246         /* Grab access to FN0 for ELP reg. */
247         func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
248
249         wlan_data = wl12xx_get_platform_data();
250         if (IS_ERR(wlan_data)) {
251                 ret = PTR_ERR(wlan_data);
252                 wl1271_error("missing wlan platform data: %d", ret);
253                 goto out_free;
254         }
255
256         wl->irq = wlan_data->irq;
257         wl->ref_clock = wlan_data->board_ref_clock;
258         wl->tcxo_clock = wlan_data->board_tcxo_clock;
259
260         ret = request_threaded_irq(wl->irq, wl1271_hardirq, wl1271_irq,
261                                    IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
262                                    DRIVER_NAME, wl);
263         if (ret < 0) {
264                 wl1271_error("request_irq() failed: %d", ret);
265                 goto out_free;
266         }
267
268         disable_irq(wl->irq);
269
270         ret = wl1271_init_ieee80211(wl);
271         if (ret)
272                 goto out_irq;
273
274         ret = wl1271_register_hw(wl);
275         if (ret)
276                 goto out_irq;
277
278         sdio_set_drvdata(func, wl);
279
280         /* Tell PM core that we don't need the card to be powered now */
281         pm_runtime_put_noidle(&func->dev);
282
283         wl1271_notice("initialized");
284
285         return 0;
286
287  out_irq:
288         free_irq(wl->irq, wl);
289
290  out_free:
291         wl1271_free_hw(wl);
292
293         return ret;
294 }
295
296 static void __devexit wl1271_remove(struct sdio_func *func)
297 {
298         struct wl1271 *wl = sdio_get_drvdata(func);
299
300         /* Undo decrement done above in wl1271_probe */
301         pm_runtime_get_noresume(&func->dev);
302
303         wl1271_unregister_hw(wl);
304         free_irq(wl->irq, wl);
305         wl1271_free_hw(wl);
306 }
307
308 static int wl1271_suspend(struct device *dev)
309 {
310         /* Tell MMC/SDIO core it's OK to power down the card
311          * (if it isn't already), but not to remove it completely */
312         return 0;
313 }
314
315 static int wl1271_resume(struct device *dev)
316 {
317         return 0;
318 }
319
320 static const struct dev_pm_ops wl1271_sdio_pm_ops = {
321         .suspend        = wl1271_suspend,
322         .resume         = wl1271_resume,
323 };
324
325 static struct sdio_driver wl1271_sdio_driver = {
326         .name           = "wl1271_sdio",
327         .id_table       = wl1271_devices,
328         .probe          = wl1271_probe,
329         .remove         = __devexit_p(wl1271_remove),
330         .drv = {
331                 .pm = &wl1271_sdio_pm_ops,
332         },
333 };
334
335 static int __init wl1271_init(void)
336 {
337         int ret;
338
339         ret = sdio_register_driver(&wl1271_sdio_driver);
340         if (ret < 0) {
341                 wl1271_error("failed to register sdio driver: %d", ret);
342                 goto out;
343         }
344
345 out:
346         return ret;
347 }
348
349 static void __exit wl1271_exit(void)
350 {
351         sdio_unregister_driver(&wl1271_sdio_driver);
352
353         wl1271_notice("unloaded");
354 }
355
356 module_init(wl1271_init);
357 module_exit(wl1271_exit);
358
359 MODULE_LICENSE("GPL");
360 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
361 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
362 MODULE_FIRMWARE(WL1271_FW_NAME);
363 MODULE_FIRMWARE(WL128X_FW_NAME);
364 MODULE_FIRMWARE(WL127X_AP_FW_NAME);
365 MODULE_FIRMWARE(WL128X_AP_FW_NAME);