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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/pm_runtime.h>
35#include <linux/printk.h>
36#include <linux/of.h>
37#include <linux/of_irq.h>
38
39#include "wlcore.h"
40#include "wl12xx_80211.h"
41#include "io.h"
42
43#ifndef SDIO_VENDOR_ID_TI
44#define SDIO_VENDOR_ID_TI 0x0097
45#endif
46
47#ifndef SDIO_DEVICE_ID_TI_WL1271
48#define SDIO_DEVICE_ID_TI_WL1271 0x4076
49#endif
50
51static bool dump = false;
52
53struct wl12xx_sdio_glue {
54 struct device *dev;
55 struct platform_device *core;
56};
57
58static const struct sdio_device_id wl1271_devices[] = {
59 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
60 {}
61};
62MODULE_DEVICE_TABLE(sdio, wl1271_devices);
63
64static void wl1271_sdio_set_block_size(struct device *child,
65 unsigned int blksz)
66{
67 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
68 struct sdio_func *func = dev_to_sdio_func(glue->dev);
69
70 sdio_claim_host(func);
71 sdio_set_block_size(func, blksz);
72 sdio_release_host(func);
73}
74
75static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr,
76 void *buf, size_t len, bool fixed)
77{
78 int ret;
79 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
80 struct sdio_func *func = dev_to_sdio_func(glue->dev);
81
82 sdio_claim_host(func);
83
84 if (unlikely(dump)) {
85 printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
86 print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
87 DUMP_PREFIX_OFFSET, 16, 1,
88 buf, len, false);
89 }
90
91 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
92 ((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
93 dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
94 addr, ((u8 *)buf)[0]);
95 } else {
96 if (fixed)
97 ret = sdio_readsb(func, buf, addr, len);
98 else
99 ret = sdio_memcpy_fromio(func, buf, addr, len);
100
101 dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
102 addr, len);
103 }
104
105 sdio_release_host(func);
106
107 if (WARN_ON(ret))
108 dev_err(child->parent, "sdio read failed (%d)\n", ret);
109
110 return ret;
111}
112
113static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr,
114 void *buf, size_t len, bool fixed)
115{
116 int ret;
117 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
118 struct sdio_func *func = dev_to_sdio_func(glue->dev);
119
120 sdio_claim_host(func);
121
122 if (unlikely(dump)) {
123 printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
124 print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
125 DUMP_PREFIX_OFFSET, 16, 1,
126 buf, len, false);
127 }
128
129 if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
130 sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
131 dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
132 addr, ((u8 *)buf)[0]);
133 } else {
134 dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
135 addr, len);
136
137 if (fixed)
138 ret = sdio_writesb(func, addr, buf, len);
139 else
140 ret = sdio_memcpy_toio(func, addr, buf, len);
141 }
142
143 sdio_release_host(func);
144
145 if (WARN_ON(ret))
146 dev_err(child->parent, "sdio write failed (%d)\n", ret);
147
148 return ret;
149}
150
151static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
152{
153 int ret;
154 struct sdio_func *func = dev_to_sdio_func(glue->dev);
155 struct mmc_card *card = func->card;
156
157 ret = pm_runtime_get_sync(&card->dev);
158 if (ret) {
159
160
161
162
163
164 ret = mmc_power_restore_host(card->host);
165 if (ret < 0) {
166 pm_runtime_put_sync(&card->dev);
167 goto out;
168 }
169 }
170
171 sdio_claim_host(func);
172 sdio_enable_func(func);
173 sdio_release_host(func);
174
175out:
176 return ret;
177}
178
179static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
180{
181 int ret;
182 struct sdio_func *func = dev_to_sdio_func(glue->dev);
183 struct mmc_card *card = func->card;
184
185 sdio_claim_host(func);
186 sdio_disable_func(func);
187 sdio_release_host(func);
188
189
190 ret = mmc_power_save_host(card->host);
191 if (ret < 0)
192 goto out;
193
194
195 pm_runtime_put_sync(&card->dev);
196
197out:
198 return ret;
199}
200
201static int wl12xx_sdio_set_power(struct device *child, bool enable)
202{
203 struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
204
205 if (enable)
206 return wl12xx_sdio_power_on(glue);
207 else
208 return wl12xx_sdio_power_off(glue);
209}
210
211static struct wl1271_if_operations sdio_ops = {
212 .read = wl12xx_sdio_raw_read,
213 .write = wl12xx_sdio_raw_write,
214 .power = wl12xx_sdio_set_power,
215 .set_block_size = wl1271_sdio_set_block_size,
216};
217
218#ifdef CONFIG_OF
219
220static const struct wilink_family_data wl127x_data = {
221 .name = "wl127x",
222 .nvs_name = "ti-connectivity/wl127x-nvs.bin",
223};
224
225static const struct wilink_family_data wl128x_data = {
226 .name = "wl128x",
227 .nvs_name = "ti-connectivity/wl128x-nvs.bin",
228};
229
230static const struct wilink_family_data wl18xx_data = {
231 .name = "wl18xx",
232 .cfg_name = "ti-connectivity/wl18xx-conf.bin",
233};
234
235static const struct of_device_id wlcore_sdio_of_match_table[] = {
236 { .compatible = "ti,wl1271", .data = &wl127x_data },
237 { .compatible = "ti,wl1273", .data = &wl127x_data },
238 { .compatible = "ti,wl1281", .data = &wl128x_data },
239 { .compatible = "ti,wl1283", .data = &wl128x_data },
240 { .compatible = "ti,wl1801", .data = &wl18xx_data },
241 { .compatible = "ti,wl1805", .data = &wl18xx_data },
242 { .compatible = "ti,wl1807", .data = &wl18xx_data },
243 { .compatible = "ti,wl1831", .data = &wl18xx_data },
244 { .compatible = "ti,wl1835", .data = &wl18xx_data },
245 { .compatible = "ti,wl1837", .data = &wl18xx_data },
246 { }
247};
248
249static int wlcore_probe_of(struct device *dev, int *irq,
250 struct wlcore_platdev_data *pdev_data)
251{
252 struct device_node *np = dev->of_node;
253 const struct of_device_id *of_id;
254
255 of_id = of_match_node(wlcore_sdio_of_match_table, np);
256 if (!of_id)
257 return -ENODEV;
258
259 pdev_data->family = of_id->data;
260
261 *irq = irq_of_parse_and_map(np, 0);
262 if (!*irq) {
263 dev_err(dev, "No irq in platform data\n");
264 return -EINVAL;
265 }
266
267
268 of_property_read_u32(np, "ref-clock-frequency",
269 &pdev_data->ref_clock_freq);
270 of_property_read_u32(np, "tcxo-clock-frequency",
271 &pdev_data->tcxo_clock_freq);
272
273 return 0;
274}
275#else
276static int wlcore_probe_of(struct device *dev, int *irq,
277 struct wlcore_platdev_data *pdev_data)
278{
279 return -ENODATA;
280}
281#endif
282
283static int wl1271_probe(struct sdio_func *func,
284 const struct sdio_device_id *id)
285{
286 struct wlcore_platdev_data *pdev_data;
287 struct wl12xx_sdio_glue *glue;
288 struct resource res[1];
289 mmc_pm_flag_t mmcflags;
290 int ret = -ENOMEM;
291 int irq;
292 const char *chip_family;
293
294
295 if (func->num != 0x02)
296 return -ENODEV;
297
298 pdev_data = devm_kzalloc(&func->dev, sizeof(*pdev_data), GFP_KERNEL);
299 if (!pdev_data)
300 return -ENOMEM;
301
302 pdev_data->if_ops = &sdio_ops;
303
304 glue = devm_kzalloc(&func->dev, sizeof(*glue), GFP_KERNEL);
305 if (!glue)
306 return -ENOMEM;
307
308 glue->dev = &func->dev;
309
310
311 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
312
313
314 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
315
316 ret = wlcore_probe_of(&func->dev, &irq, pdev_data);
317 if (ret)
318 goto out;
319
320
321 mmcflags = sdio_get_host_pm_caps(func);
322 dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
323
324 if (mmcflags & MMC_PM_KEEP_POWER)
325 pdev_data->pwr_in_suspend = true;
326
327 sdio_set_drvdata(func, glue);
328
329
330 pm_runtime_put_noidle(&func->dev);
331
332
333
334
335
336
337
338 if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
339 chip_family = "wl18xx";
340 else
341 chip_family = "wl12xx";
342
343 glue->core = platform_device_alloc(chip_family, PLATFORM_DEVID_AUTO);
344 if (!glue->core) {
345 dev_err(glue->dev, "can't allocate platform_device");
346 ret = -ENOMEM;
347 goto out;
348 }
349
350 glue->core->dev.parent = &func->dev;
351
352 memset(res, 0x00, sizeof(res));
353
354 res[0].start = irq;
355 res[0].flags = IORESOURCE_IRQ |
356 irqd_get_trigger_type(irq_get_irq_data(irq));
357 res[0].name = "irq";
358
359 ret = platform_device_add_resources(glue->core, res, ARRAY_SIZE(res));
360 if (ret) {
361 dev_err(glue->dev, "can't add resources\n");
362 goto out_dev_put;
363 }
364
365 ret = platform_device_add_data(glue->core, pdev_data,
366 sizeof(*pdev_data));
367 if (ret) {
368 dev_err(glue->dev, "can't add platform data\n");
369 goto out_dev_put;
370 }
371
372 ret = platform_device_add(glue->core);
373 if (ret) {
374 dev_err(glue->dev, "can't add platform device\n");
375 goto out_dev_put;
376 }
377 return 0;
378
379out_dev_put:
380 platform_device_put(glue->core);
381
382out:
383 return ret;
384}
385
386static void wl1271_remove(struct sdio_func *func)
387{
388 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
389
390
391 pm_runtime_get_noresume(&func->dev);
392
393 platform_device_unregister(glue->core);
394}
395
396#ifdef CONFIG_PM
397static int wl1271_suspend(struct device *dev)
398{
399
400
401 struct sdio_func *func = dev_to_sdio_func(dev);
402 struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
403 struct wl1271 *wl = platform_get_drvdata(glue->core);
404 mmc_pm_flag_t sdio_flags;
405 int ret = 0;
406
407 dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
408 wl->wow_enabled);
409
410
411 if (wl->wow_enabled) {
412 sdio_flags = sdio_get_host_pm_caps(func);
413
414 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
415 dev_err(dev, "can't keep power while host "
416 "is suspended\n");
417 ret = -EINVAL;
418 goto out;
419 }
420
421
422 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
423 if (ret) {
424 dev_err(dev, "error while trying to keep power\n");
425 goto out;
426 }
427 }
428out:
429 return ret;
430}
431
432static int wl1271_resume(struct device *dev)
433{
434 dev_dbg(dev, "wl1271 resume\n");
435
436 return 0;
437}
438
439static const struct dev_pm_ops wl1271_sdio_pm_ops = {
440 .suspend = wl1271_suspend,
441 .resume = wl1271_resume,
442};
443#endif
444
445static struct sdio_driver wl1271_sdio_driver = {
446 .name = "wl1271_sdio",
447 .id_table = wl1271_devices,
448 .probe = wl1271_probe,
449 .remove = wl1271_remove,
450#ifdef CONFIG_PM
451 .drv = {
452 .pm = &wl1271_sdio_pm_ops,
453 },
454#endif
455};
456
457static int __init wl1271_init(void)
458{
459 return sdio_register_driver(&wl1271_sdio_driver);
460}
461
462static void __exit wl1271_exit(void)
463{
464 sdio_unregister_driver(&wl1271_sdio_driver);
465}
466
467module_init(wl1271_init);
468module_exit(wl1271_exit);
469
470module_param(dump, bool, S_IRUSR | S_IWUSR);
471MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
472
473MODULE_LICENSE("GPL");
474MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
475MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
476
