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24#include <linux/irq.h>
25#include <linux/module.h>
26#include <linux/vmalloc.h>
27#include <linux/platform_device.h>
28#include <linux/mmc/sdio.h>
29#include <linux/mmc/sdio_func.h>
30#include <linux/mmc/sdio_ids.h>
31#include <linux/mmc/card.h>
32#include <linux/mmc/host.h>
33#include <linux/gpio.h>
34#include <linux/wl12xx.h>
35#include <linux/pm_runtime.h>
36#include <linux/printk.h>
37
38#include "wlcore.h"
39#include "wl12xx_80211.h"
40#include "io.h"
41
42#ifndef SDIO_VENDOR_ID_TI
43#define SDIO_VENDOR_ID_TI 0x0097
44#endif
45
46#ifndef SDIO_DEVICE_ID_TI_WL1271
47#define SDIO_DEVICE_ID_TI_WL1271 0x4076
48#endif
49
50static bool dump = false;
51
52struct wl12xx_sdio_glue {
53 struct device *dev;
54 struct platform_device *core;
55};
56
57static const struct sdio_device_id wl1271_devices[] = {
58 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
59 {}
60};
61MODULE_DEVICE_TABLE(sdio, wl1271_devices);
62
63static void wl1271_sdio_set_block_size(struct device *child,
64 unsigned int blksz)
65{
66 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
67 struct sdio_func *func = dev_to_sdio_func(glue->dev);
68
69 sdio_claim_host(func);
70 sdio_set_block_size(func, blksz);
71 sdio_release_host(func);
72}
73
74static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr,
75 void *buf, size_t len, bool fixed)
76{
77 int ret;
78 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
79 struct sdio_func *func = dev_to_sdio_func(glue->dev);
80
81 sdio_claim_host(func);
82
83 if (unlikely(dump)) {
84 printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
85 print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
86 DUMP_PREFIX_OFFSET, 16, 1,
87 buf, len, false);
88 }
89
90 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
91 ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
92 dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
93 addr, ((u8 *)buf)[0]);
94 } else {
95 if (fixed)
96 ret = sdio_readsb(func, buf, addr, len);
97 else
98 ret = sdio_memcpy_fromio(func, buf, addr, len);
99
100 dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
101 addr, len);
102 }
103
104 sdio_release_host(func);
105
106 if (WARN_ON(ret))
107 dev_err(child->parent, "sdio read failed (%d)\n", ret);
108
109 return ret;
110}
111
112static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr,
113 void *buf, size_t len, bool fixed)
114{
115 int ret;
116 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
117 struct sdio_func *func = dev_to_sdio_func(glue->dev);
118
119 sdio_claim_host(func);
120
121 if (unlikely(dump)) {
122 printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
123 print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
124 DUMP_PREFIX_OFFSET, 16, 1,
125 buf, len, false);
126 }
127
128 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
129 sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
130 dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
131 addr, ((u8 *)buf)[0]);
132 } else {
133 dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
134 addr, len);
135
136 if (fixed)
137 ret = sdio_writesb(func, addr, buf, len);
138 else
139 ret = sdio_memcpy_toio(func, addr, buf, len);
140 }
141
142 sdio_release_host(func);
143
144 if (WARN_ON(ret))
145 dev_err(child->parent, "sdio write failed (%d)\n", ret);
146
147 return ret;
148}
149
150static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
151{
152 int ret;
153 struct sdio_func *func = dev_to_sdio_func(glue->dev);
154 struct mmc_card *card = func->card;
155
156 ret = pm_runtime_get_sync(&card->dev);
157 if (ret) {
158
159
160
161
162
163 ret = mmc_power_restore_host(card->host);
164 if (ret < 0) {
165 pm_runtime_put_sync(&card->dev);
166 goto out;
167 }
168 }
169
170 sdio_claim_host(func);
171 sdio_enable_func(func);
172 sdio_release_host(func);
173
174out:
175 return ret;
176}
177
178static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
179{
180 int ret;
181 struct sdio_func *func = dev_to_sdio_func(glue->dev);
182 struct mmc_card *card = func->card;
183
184 sdio_claim_host(func);
185 sdio_disable_func(func);
186 sdio_release_host(func);
187
188
189 ret = mmc_power_save_host(card->host);
190 if (ret < 0)
191 goto out;
192
193
194 pm_runtime_put_sync(&card->dev);
195
196out:
197 return ret;
198}
199
200static int wl12xx_sdio_set_power(struct device *child, bool enable)
201{
202 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
203
204 if (enable)
205 return wl12xx_sdio_power_on(glue);
206 else
207 return wl12xx_sdio_power_off(glue);
208}
209
210static struct wl1271_if_operations sdio_ops = {
211 .read = wl12xx_sdio_raw_read,
212 .write = wl12xx_sdio_raw_write,
213 .power = wl12xx_sdio_set_power,
214 .set_block_size = wl1271_sdio_set_block_size,
215};
216
217static int wl1271_probe(struct sdio_func *func,
218 const struct sdio_device_id *id)
219{
220 struct wlcore_platdev_data *pdev_data;
221 struct wl12xx_sdio_glue *glue;
222 struct resource res[1];
223 mmc_pm_flag_t mmcflags;
224 int ret = -ENOMEM;
225 const char *chip_family;
226
227
228 if (func->num != 0x02)
229 return -ENODEV;
230
231 pdev_data = kzalloc(sizeof(*pdev_data), GFP_KERNEL);
232 if (!pdev_data)
233 goto out;
234
235 pdev_data->if_ops = &sdio_ops;
236
237 glue = kzalloc(sizeof(*glue), GFP_KERNEL);
238 if (!glue) {
239 dev_err(&func->dev, "can't allocate glue\n");
240 goto out_free_pdev_data;
241 }
242
243 glue->dev = &func->dev;
244
245
246 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
247
248
249 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
250
251 pdev_data->pdata = wl12xx_get_platform_data();
252 if (IS_ERR(pdev_data->pdata)) {
253 ret = PTR_ERR(pdev_data->pdata);
254 dev_err(glue->dev, "missing wlan platform data: %d\n", ret);
255 goto out_free_glue;
256 }
257
258
259 mmcflags = sdio_get_host_pm_caps(func);
260 dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
261
262 if (mmcflags & MMC_PM_KEEP_POWER)
263 pdev_data->pdata->pwr_in_suspend = true;
264
265 sdio_set_drvdata(func, glue);
266
267
268 pm_runtime_put_noidle(&func->dev);
269
270
271
272
273
274
275
276 if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
277 chip_family = "wl18xx";
278 else
279 chip_family = "wl12xx";
280
281 glue->core = platform_device_alloc(chip_family, PLATFORM_DEVID_AUTO);
282 if (!glue->core) {
283 dev_err(glue->dev, "can't allocate platform_device");
284 ret = -ENOMEM;
285 goto out_free_glue;
286 }
287
288 glue->core->dev.parent = &func->dev;
289
290 memset(res, 0x00, sizeof(res));
291
292 res[0].start = pdev_data->pdata->irq;
293 res[0].flags = IORESOURCE_IRQ;
294 res[0].name = "irq";
295
296 ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
297 if (ret) {
298 dev_err(glue->dev, "can't add resources\n");
299 goto out_dev_put;
300 }
301
302 ret = platform_device_add_data(glue->core, pdev_data,
303 sizeof(*pdev_data));
304 if (ret) {
305 dev_err(glue->dev, "can't add platform data\n");
306 goto out_dev_put;
307 }
308
309 ret = platform_device_add(glue->core);
310 if (ret) {
311 dev_err(glue->dev, "can't add platform device\n");
312 goto out_dev_put;
313 }
314 return 0;
315
316out_dev_put:
317 platform_device_put(glue->core);
318
319out_free_glue:
320 kfree(glue);
321
322out_free_pdev_data:
323 kfree(pdev_data);
324
325out:
326 return ret;
327}
328
329static void wl1271_remove(struct sdio_func *func)
330{
331 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
332
333
334 pm_runtime_get_noresume(&func->dev);
335
336 platform_device_unregister(glue->core);
337 kfree(glue);
338}
339
340#ifdef CONFIG_PM
341static int wl1271_suspend(struct device *dev)
342{
343
344
345 struct sdio_func *func = dev_to_sdio_func(dev);
346 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
347 struct wl1271 *wl = platform_get_drvdata(glue->core);
348 mmc_pm_flag_t sdio_flags;
349 int ret = 0;
350
351 dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
352 wl->wow_enabled);
353
354
355 if (wl->wow_enabled) {
356 sdio_flags = sdio_get_host_pm_caps(func);
357
358 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
359 dev_err(dev, "can't keep power while host "
360 "is suspended\n");
361 ret = -EINVAL;
362 goto out;
363 }
364
365
366 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
367 if (ret) {
368 dev_err(dev, "error while trying to keep power\n");
369 goto out;
370 }
371 }
372out:
373 return ret;
374}
375
376static int wl1271_resume(struct device *dev)
377{
378 dev_dbg(dev, "wl1271 resume\n");
379
380 return 0;
381}
382
383static const struct dev_pm_ops wl1271_sdio_pm_ops = {
384 .suspend = wl1271_suspend,
385 .resume = wl1271_resume,
386};
387#endif
388
389static struct sdio_driver wl1271_sdio_driver = {
390 .name = "wl1271_sdio",
391 .id_table = wl1271_devices,
392 .probe = wl1271_probe,
393 .remove = wl1271_remove,
394#ifdef CONFIG_PM
395 .drv = {
396 .pm = &wl1271_sdio_pm_ops,
397 },
398#endif
399};
400
401static int __init wl1271_init(void)
402{
403 return sdio_register_driver(&wl1271_sdio_driver);
404}
405
406static void __exit wl1271_exit(void)
407{
408 sdio_unregister_driver(&wl1271_sdio_driver);
409}
410
411module_init(wl1271_init);
412module_exit(wl1271_exit);
413
414module_param(dump, bool, S_IRUSR | S_IWUSR);
415MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
416
417MODULE_LICENSE("GPL");
418MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
419MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
420
