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path: root/drivers/net/wireless/wl12xx/wl1251_sdio.c
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Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1251_sdio.c')
-rw-r--r--drivers/net/wireless/wl12xx/wl1251_sdio.c342
1 files changed, 0 insertions, 342 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1251_sdio.c b/drivers/net/wireless/wl12xx/wl1251_sdio.c
deleted file mode 100644
index b901b6135654..000000000000
--- a/drivers/net/wireless/wl12xx/wl1251_sdio.c
+++ /dev/null
@@ -1,342 +0,0 @@
1/*
2 * wl12xx SDIO routines
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
16 * 02110-1301 USA
17 *
18 * Copyright (C) 2005 Texas Instruments Incorporated
19 * Copyright (C) 2008 Google Inc
20 * Copyright (C) 2009 Bob Copeland (me@bobcopeland.com)
21 */
22#include <linux/module.h>
23#include <linux/mod_devicetable.h>
24#include <linux/mmc/sdio_func.h>
25#include <linux/mmc/sdio_ids.h>
26#include <linux/platform_device.h>
27#include <linux/spi/wl12xx.h>
28#include <linux/irq.h>
29
30#include "wl1251.h"
31
32#ifndef SDIO_VENDOR_ID_TI
33#define SDIO_VENDOR_ID_TI 0x104c
34#endif
35
36#ifndef SDIO_DEVICE_ID_TI_WL1251
37#define SDIO_DEVICE_ID_TI_WL1251 0x9066
38#endif
39
40struct wl1251_sdio {
41 struct sdio_func *func;
42 u32 elp_val;
43};
44
45static struct wl12xx_platform_data *wl12xx_board_data;
46
47static struct sdio_func *wl_to_func(struct wl1251 *wl)
48{
49 struct wl1251_sdio *wl_sdio = wl->if_priv;
50 return wl_sdio->func;
51}
52
53static void wl1251_sdio_interrupt(struct sdio_func *func)
54{
55 struct wl1251 *wl = sdio_get_drvdata(func);
56
57 wl1251_debug(DEBUG_IRQ, "IRQ");
58
59 /* FIXME should be synchronous for sdio */
60 ieee80211_queue_work(wl->hw, &wl->irq_work);
61}
62
63static const struct sdio_device_id wl1251_devices[] = {
64 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) },
65 {}
66};
67MODULE_DEVICE_TABLE(sdio, wl1251_devices);
68
69
70static void wl1251_sdio_read(struct wl1251 *wl, int addr,
71 void *buf, size_t len)
72{
73 int ret;
74 struct sdio_func *func = wl_to_func(wl);
75
76 sdio_claim_host(func);
77 ret = sdio_memcpy_fromio(func, buf, addr, len);
78 if (ret)
79 wl1251_error("sdio read failed (%d)", ret);
80 sdio_release_host(func);
81}
82
83static void wl1251_sdio_write(struct wl1251 *wl, int addr,
84 void *buf, size_t len)
85{
86 int ret;
87 struct sdio_func *func = wl_to_func(wl);
88
89 sdio_claim_host(func);
90 ret = sdio_memcpy_toio(func, addr, buf, len);
91 if (ret)
92 wl1251_error("sdio write failed (%d)", ret);
93 sdio_release_host(func);
94}
95
96static void wl1251_sdio_read_elp(struct wl1251 *wl, int addr, u32 *val)
97{
98 int ret = 0;
99 struct wl1251_sdio *wl_sdio = wl->if_priv;
100 struct sdio_func *func = wl_sdio->func;
101
102 /*
103 * The hardware only supports RAW (read after write) access for
104 * reading, regular sdio_readb won't work here (it interprets
105 * the unused bits of CMD52 as write data even if we send read
106 * request).
107 */
108 sdio_claim_host(func);
109 *val = sdio_writeb_readb(func, wl_sdio->elp_val, addr, &ret);
110 sdio_release_host(func);
111
112 if (ret)
113 wl1251_error("sdio_readb failed (%d)", ret);
114}
115
116static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val)
117{
118 int ret = 0;
119 struct wl1251_sdio *wl_sdio = wl->if_priv;
120 struct sdio_func *func = wl_sdio->func;
121
122 sdio_claim_host(func);
123 sdio_writeb(func, val, addr, &ret);
124 sdio_release_host(func);
125
126 if (ret)
127 wl1251_error("sdio_writeb failed (%d)", ret);
128 else
129 wl_sdio->elp_val = val;
130}
131
132static void wl1251_sdio_reset(struct wl1251 *wl)
133{
134}
135
136static void wl1251_sdio_enable_irq(struct wl1251 *wl)
137{
138 struct sdio_func *func = wl_to_func(wl);
139
140 sdio_claim_host(func);
141 sdio_claim_irq(func, wl1251_sdio_interrupt);
142 sdio_release_host(func);
143}
144
145static void wl1251_sdio_disable_irq(struct wl1251 *wl)
146{
147 struct sdio_func *func = wl_to_func(wl);
148
149 sdio_claim_host(func);
150 sdio_release_irq(func);
151 sdio_release_host(func);
152}
153
154/* Interrupts when using dedicated WLAN_IRQ pin */
155static irqreturn_t wl1251_line_irq(int irq, void *cookie)
156{
157 struct wl1251 *wl = cookie;
158
159 ieee80211_queue_work(wl->hw, &wl->irq_work);
160
161 return IRQ_HANDLED;
162}
163
164static void wl1251_enable_line_irq(struct wl1251 *wl)
165{
166 return enable_irq(wl->irq);
167}
168
169static void wl1251_disable_line_irq(struct wl1251 *wl)
170{
171 return disable_irq(wl->irq);
172}
173
174static void wl1251_sdio_set_power(bool enable)
175{
176}
177
178static struct wl1251_if_operations wl1251_sdio_ops = {
179 .read = wl1251_sdio_read,
180 .write = wl1251_sdio_write,
181 .write_elp = wl1251_sdio_write_elp,
182 .read_elp = wl1251_sdio_read_elp,
183 .reset = wl1251_sdio_reset,
184};
185
186static int wl1251_platform_probe(struct platform_device *pdev)
187{
188 if (pdev->id != -1) {
189 wl1251_error("can only handle single device");
190 return -ENODEV;
191 }
192
193 wl12xx_board_data = pdev->dev.platform_data;
194 return 0;
195}
196
197/*
198 * Dummy platform_driver for passing platform_data to this driver,
199 * until we have a way to pass this through SDIO subsystem or
200 * some other way.
201 */
202static struct platform_driver wl1251_platform_driver = {
203 .driver = {
204 .name = "wl1251_data",
205 .owner = THIS_MODULE,
206 },
207 .probe = wl1251_platform_probe,
208};
209
210static int wl1251_sdio_probe(struct sdio_func *func,
211 const struct sdio_device_id *id)
212{
213 int ret;
214 struct wl1251 *wl;
215 struct ieee80211_hw *hw;
216 struct wl1251_sdio *wl_sdio;
217
218 hw = wl1251_alloc_hw();
219 if (IS_ERR(hw))
220 return PTR_ERR(hw);
221
222 wl = hw->priv;
223
224 wl_sdio = kzalloc(sizeof(*wl_sdio), GFP_KERNEL);
225 if (wl_sdio == NULL) {
226 ret = -ENOMEM;
227 goto out_free_hw;
228 }
229
230 sdio_claim_host(func);
231 ret = sdio_enable_func(func);
232 if (ret)
233 goto release;
234
235 sdio_set_block_size(func, 512);
236 sdio_release_host(func);
237
238 SET_IEEE80211_DEV(hw, &func->dev);
239 wl_sdio->func = func;
240 wl->if_priv = wl_sdio;
241 wl->if_ops = &wl1251_sdio_ops;
242 wl->set_power = wl1251_sdio_set_power;
243
244 if (wl12xx_board_data != NULL) {
245 wl->set_power = wl12xx_board_data->set_power;
246 wl->irq = wl12xx_board_data->irq;
247 wl->use_eeprom = wl12xx_board_data->use_eeprom;
248 }
249
250 if (wl->irq) {
251 ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl);
252 if (ret < 0) {
253 wl1251_error("request_irq() failed: %d", ret);
254 goto disable;
255 }
256
257 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
258 disable_irq(wl->irq);
259
260 wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
261 wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
262
263 wl1251_info("using dedicated interrupt line");
264 } else {
265 wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
266 wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
267
268 wl1251_info("using SDIO interrupt");
269 }
270
271 ret = wl1251_init_ieee80211(wl);
272 if (ret)
273 goto out_free_irq;
274
275 sdio_set_drvdata(func, wl);
276 return ret;
277
278out_free_irq:
279 if (wl->irq)
280 free_irq(wl->irq, wl);
281disable:
282 sdio_claim_host(func);
283 sdio_disable_func(func);
284release:
285 sdio_release_host(func);
286 kfree(wl_sdio);
287out_free_hw:
288 wl1251_free_hw(wl);
289 return ret;
290}
291
292static void __devexit wl1251_sdio_remove(struct sdio_func *func)
293{
294 struct wl1251 *wl = sdio_get_drvdata(func);
295 struct wl1251_sdio *wl_sdio = wl->if_priv;
296
297 if (wl->irq)
298 free_irq(wl->irq, wl);
299 kfree(wl_sdio);
300 wl1251_free_hw(wl);
301
302 sdio_claim_host(func);
303 sdio_release_irq(func);
304 sdio_disable_func(func);
305 sdio_release_host(func);
306}
307
308static struct sdio_driver wl1251_sdio_driver = {
309 .name = "wl1251_sdio",
310 .id_table = wl1251_devices,
311 .probe = wl1251_sdio_probe,
312 .remove = __devexit_p(wl1251_sdio_remove),
313};
314
315static int __init wl1251_sdio_init(void)
316{
317 int err;
318
319 err = platform_driver_register(&wl1251_platform_driver);
320 if (err) {
321 wl1251_error("failed to register platform driver: %d", err);
322 return err;
323 }
324
325 err = sdio_register_driver(&wl1251_sdio_driver);
326 if (err)
327 wl1251_error("failed to register sdio driver: %d", err);
328 return err;
329}
330
331static void __exit wl1251_sdio_exit(void)
332{
333 sdio_unregister_driver(&wl1251_sdio_driver);
334 platform_driver_unregister(&wl1251_platform_driver);
335 wl1251_notice("unloaded");
336}
337
338module_init(wl1251_sdio_init);
339module_exit(wl1251_sdio_exit);
340
341MODULE_LICENSE("GPL");
342MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-11 03:34:24 -0400