1 /*
2 * Linux platform device for DHD WLAN adapter
3 *
4 * Copyright (C) 2020, Broadcom.
5 *
6 * Unless you and Broadcom execute a separate written software license
7 * agreement governing use of this software, this software is licensed to you
8 * under the terms of the GNU General Public License version 2 (the "GPL"),
9 * available at http://www.broadcom.com/licenses/GPLv2.php, with the
10 * following added to such license:
11 *
12 * As a special exception, the copyright holders of this software give you
13 * permission to link this software with independent modules, and to copy and
14 * distribute the resulting executable under terms of your choice, provided that
15 * you also meet, for each linked independent module, the terms and conditions of
16 * the license of that module. An independent module is a module which is not
17 * derived from this software. The special exception does not apply to any
18 * modifications of the software.
19 *
20 *
21 * <<Broadcom-WL-IPTag/Open:>>
22 *
23 * $Id$
24 */
25 #include <typedefs.h>
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/platform_device.h>
30 #include <bcmutils.h>
31 #include <linux_osl.h>
32 #include <dhd_dbg.h>
33 #include <dngl_stats.h>
34 #include <dhd.h>
35 #include <dhd_bus.h>
36 #include <dhd_linux.h>
37 #if defined(OEM_ANDROID)
38 #include <wl_android.h>
39 #endif
40 #if defined(CONFIG_WIFI_CONTROL_FUNC) || defined(CUSTOMER_HW4)
41 #include <linux/wlan_plat.h>
42 #else
43 #include <dhd_plat.h>
44 #endif /* CONFIG_WIFI_CONTROL_FUNC */
45 #ifdef CONFIG_DTS
46 #include<linux/regulator/consumer.h>
47 #include<linux/of_gpio.h>
48 #endif /* CONFIG_DTS */
49
50 #if defined(CUSTOMER_HW) || defined(BCMDHD_PLATDEV)
51 extern int dhd_wlan_init_plat_data(wifi_adapter_info_t *adapter);
52 extern void dhd_wlan_deinit_plat_data(wifi_adapter_info_t *adapter);
53 #endif /* CUSTOMER_HW */
54
55 #define WIFI_PLAT_NAME "bcmdhd_wlan"
56 #define WIFI_PLAT_NAME2 "bcm4329_wlan"
57 #define WIFI_PLAT_EXT "bcmdhd_wifi_platform"
58
59 #ifdef DHD_WIFI_SHUTDOWN
60 extern void wifi_plat_dev_drv_shutdown(struct platform_device *pdev);
61 #endif
62
63 #ifdef CONFIG_DTS
64 struct regulator *wifi_regulator = NULL;
65 #endif /* CONFIG_DTS */
66
67 bool cfg_multichip = FALSE;
68 bcmdhd_wifi_platdata_t *dhd_wifi_platdata = NULL;
69 static int wifi_plat_dev_probe_ret = 0;
70 static bool is_power_on = FALSE;
71 /* XXX Some Qualcomm based CUSTOMER_HW4 platforms are using platform
72 * device structure even if the Kernel uses device tree structure.
73 * Therefore, the CONFIG_ARCH_MSM condition is temporarly remained
74 * to support in this case.
75 */
76 #if !defined(CONFIG_DTS)
77 #if defined(DHD_OF_SUPPORT)
78 static bool dts_enabled = TRUE;
79 extern struct resource dhd_wlan_resources;
80 extern struct wifi_platform_data dhd_wlan_control;
81 #else
82 static bool dts_enabled = FALSE;
83 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
84 #pragma GCC diagnostic push
85 #pragma GCC diagnostic ignored "-Wmissing-field-initializers"
86 #endif
87 struct resource dhd_wlan_resources = {0};
88 extern struct wifi_platform_data dhd_wlan_control;
89 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
90 #pragma GCC diagnostic pop
91 #endif
92 #endif /* CONFIG_OF && !defined(CONFIG_ARCH_MSM) */
93 #endif /* !defind(CONFIG_DTS) */
94
95 static int dhd_wifi_platform_load(void);
96
97 extern void* wl_cfg80211_get_dhdp(struct net_device *dev);
98
99 #ifdef BCMDHD_MODULAR
100 //extern int dhd_wlan_init(void);
101 //extern int dhd_wlan_deinit(void);
102 #ifdef WBRC
103 extern int wbrc_init(void);
104 extern void wbrc_exit(void);
105 #endif /* WBRC */
106 #endif /* BCMDHD_MODULAR */
107
108 #ifdef ENABLE_4335BT_WAR
109 extern int bcm_bt_lock(int cookie);
110 extern void bcm_bt_unlock(int cookie);
111 static int lock_cookie_wifi = 'W' | 'i'<<8 | 'F'<<16 | 'i'<<24; /* cookie is "WiFi" */
112 #endif /* ENABLE_4335BT_WAR */
113
114 #ifdef BCM4335_XTAL_WAR
115 extern bool check_bcm4335_rev(void);
116 #endif /* BCM4335_XTAL_WAR */
117
dhd_wifi_platform_attach_adapter(uint32 bus_type,uint32 bus_num,uint32 slot_num,unsigned long status)118 wifi_adapter_info_t* dhd_wifi_platform_attach_adapter(uint32 bus_type,
119 uint32 bus_num, uint32 slot_num, unsigned long status)
120 {
121 int i;
122
123 if (dhd_wifi_platdata == NULL)
124 return NULL;
125
126 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
127 wifi_adapter_info_t *adapter = &dhd_wifi_platdata->adapters[i];
128 if ((adapter->bus_type == -1 || adapter->bus_type == bus_type) &&
129 (adapter->bus_num == -1 || adapter->bus_num == bus_num) &&
130 (adapter->slot_num == -1 || adapter->slot_num == slot_num)
131 #if defined(ENABLE_INSMOD_NO_FW_LOAD)
132 && (wifi_chk_adapter_status(adapter, status))
133 #endif
134 ) {
135 DHD_ERROR(("attach adapter info '%s'\n", adapter->name));
136 return adapter;
137 }
138 }
139 return NULL;
140 }
141
dhd_wifi_platform_get_adapter(uint32 bus_type,uint32 bus_num,uint32 slot_num)142 wifi_adapter_info_t* dhd_wifi_platform_get_adapter(uint32 bus_type, uint32 bus_num, uint32 slot_num)
143 {
144 int i;
145
146 if (dhd_wifi_platdata == NULL)
147 return NULL;
148
149 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
150 wifi_adapter_info_t *adapter = &dhd_wifi_platdata->adapters[i];
151 if ((adapter->bus_type == -1 || adapter->bus_type == bus_type) &&
152 (adapter->bus_num == -1 || adapter->bus_num == bus_num) &&
153 (adapter->slot_num == -1 || adapter->slot_num == slot_num)) {
154 DHD_TRACE(("found adapter info '%s'\n", adapter->name));
155 return adapter;
156 }
157 }
158 return NULL;
159 }
160
wifi_platform_prealloc(wifi_adapter_info_t * adapter,int section,unsigned long size)161 void* wifi_platform_prealloc(wifi_adapter_info_t *adapter, int section, unsigned long size)
162 {
163 void *alloc_ptr = NULL;
164 struct wifi_platform_data *plat_data;
165
166 if (!adapter || !adapter->wifi_plat_data)
167 return NULL;
168 plat_data = adapter->wifi_plat_data;
169 if (plat_data->mem_prealloc) {
170 #if defined(BCMDHD_MDRIVER) && !defined(DHD_STATIC_IN_DRIVER)
171 alloc_ptr = plat_data->mem_prealloc(adapter->bus_type, adapter->index, section, size);
172 #else
173 alloc_ptr = plat_data->mem_prealloc(section, size);
174 #endif
175 if (alloc_ptr) {
176 DHD_INFO(("success alloc section %d\n", section));
177 if (size != 0L)
178 bzero(alloc_ptr, size);
179 return alloc_ptr;
180 }
181 } else
182 return NULL;
183
184 DHD_ERROR(("%s: failed to alloc static mem section %d\n", __FUNCTION__, section));
185 return NULL;
186 }
187
wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t * adapter)188 void* wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t *adapter)
189 {
190 struct wifi_platform_data *plat_data;
191
192 if (!adapter || !adapter->wifi_plat_data)
193 return NULL;
194 plat_data = adapter->wifi_plat_data;
195 return plat_data->mem_prealloc;
196 }
197
wifi_platform_get_irq_number(wifi_adapter_info_t * adapter,unsigned long * irq_flags_ptr)198 int wifi_platform_get_irq_number(wifi_adapter_info_t *adapter, unsigned long *irq_flags_ptr)
199 {
200 if (adapter == NULL)
201 return -1;
202 if (irq_flags_ptr)
203 *irq_flags_ptr = adapter->intr_flags;
204 return adapter->irq_num;
205 }
206
wifi_platform_set_power(wifi_adapter_info_t * adapter,bool on,unsigned long msec)207 int wifi_platform_set_power(wifi_adapter_info_t *adapter, bool on, unsigned long msec)
208 {
209 int err = 0;
210 #ifndef CONFIG_DTS
211 struct wifi_platform_data *plat_data;
212 #endif
213 #ifdef BT_OVER_SDIO
214 if (is_power_on == on) {
215 return -EINVAL;
216 }
217 #endif /* BT_OVER_SDIO */
218 if (on) {
219 wifi_set_adapter_status(adapter, WIFI_STATUS_POWER_ON);
220 } else {
221 wifi_clr_adapter_status(adapter, WIFI_STATUS_POWER_ON);
222 }
223 #ifdef CONFIG_DTS
224 if (on) {
225 printf("======== PULL WL_REG_ON HIGH! ========\n");
226 err = regulator_enable(wifi_regulator);
227 is_power_on = TRUE;
228 }
229 else {
230 printf("======== PULL WL_REG_ON LOW! ========\n");
231 err = regulator_disable(wifi_regulator);
232 is_power_on = FALSE;
233 }
234 if (err < 0) {
235 DHD_ERROR(("%s: regulator enable/disable failed", __FUNCTION__));
236 goto fail;
237 }
238 #else
239 if (!adapter || !adapter->wifi_plat_data) {
240 err = -EINVAL;
241 goto fail;
242 }
243 plat_data = adapter->wifi_plat_data;
244
245 DHD_ERROR(("%s = %d, delay: %lu msec\n", __FUNCTION__, on, msec));
246 if (plat_data->set_power) {
247 #ifdef ENABLE_4335BT_WAR
248 if (on) {
249 printk("WiFi: trying to acquire BT lock\n");
250 if (bcm_bt_lock(lock_cookie_wifi) != 0)
251 printk("** WiFi: timeout in acquiring bt lock**\n");
252 printk("%s: btlock acquired\n", __FUNCTION__);
253 }
254 else {
255 /* For a exceptional case, release btlock */
256 bcm_bt_unlock(lock_cookie_wifi);
257 }
258 #endif /* ENABLE_4335BT_WAR */
259
260 err = plat_data->set_power(on, adapter);
261 }
262
263 if (msec && !err)
264 OSL_SLEEP(msec);
265
266 if (on && !err)
267 is_power_on = TRUE;
268 else
269 is_power_on = FALSE;
270
271 #endif /* CONFIG_DTS */
272
273 return err;
274 fail:
275 if (on) {
276 wifi_clr_adapter_status(adapter, WIFI_STATUS_POWER_ON);
277 } else {
278 wifi_set_adapter_status(adapter, WIFI_STATUS_POWER_ON);
279 }
280 return err;
281 }
282
wifi_platform_bus_enumerate(wifi_adapter_info_t * adapter,bool device_present)283 int wifi_platform_bus_enumerate(wifi_adapter_info_t *adapter, bool device_present)
284 {
285 int err = 0;
286 struct wifi_platform_data *plat_data;
287
288 if (!adapter || !adapter->wifi_plat_data)
289 return -EINVAL;
290 plat_data = adapter->wifi_plat_data;
291
292 DHD_ERROR(("%s device present %d\n", __FUNCTION__, device_present));
293 if (plat_data->set_carddetect) {
294 err = plat_data->set_carddetect(device_present);
295 }
296 return err;
297
298 }
299
wifi_platform_get_mac_addr(wifi_adapter_info_t * adapter,unsigned char * buf,int ifidx)300 int wifi_platform_get_mac_addr(wifi_adapter_info_t *adapter, unsigned char *buf,
301 int ifidx)
302 {
303 struct wifi_platform_data *plat_data;
304
305 DHD_ERROR(("%s\n", __FUNCTION__));
306 if (!buf || !adapter || !adapter->wifi_plat_data)
307 return -EINVAL;
308 plat_data = adapter->wifi_plat_data;
309 if (plat_data->get_mac_addr) {
310 return plat_data->get_mac_addr(buf, ifidx);
311 }
312 return -EOPNOTSUPP;
313 }
314
315 #ifdef DHD_COREDUMP
wifi_platform_set_coredump(wifi_adapter_info_t * adapter,const char * buf,int buf_len,const char * info)316 int wifi_platform_set_coredump(wifi_adapter_info_t *adapter, const char *buf,
317 int buf_len, const char *info)
318 {
319 struct wifi_platform_data *plat_data;
320
321 DHD_ERROR(("%s\n", __FUNCTION__));
322 if (!buf || !adapter || !adapter->wifi_plat_data)
323 return -EINVAL;
324 plat_data = adapter->wifi_plat_data;
325 if (plat_data->set_coredump) {
326 return plat_data->set_coredump(buf, buf_len, info);
327 }
328 return -EOPNOTSUPP;
329 }
330 #endif /* DHD_COREDUMP */
331
332 void *
333 #ifdef CUSTOM_COUNTRY_CODE
wifi_platform_get_country_code(wifi_adapter_info_t * adapter,char * ccode,u32 flags)334 wifi_platform_get_country_code(wifi_adapter_info_t *adapter, char *ccode, u32 flags)
335 #else
336 wifi_platform_get_country_code(wifi_adapter_info_t *adapter, char *ccode)
337 #endif /* CUSTOM_COUNTRY_CODE */
338 {
339 /* get_country_code was added after 2.6.39 */
340 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
341 struct wifi_platform_data *plat_data;
342
343 if (!ccode || !adapter || !adapter->wifi_plat_data)
344 return NULL;
345 plat_data = adapter->wifi_plat_data;
346
347 DHD_TRACE(("%s\n", __FUNCTION__));
348 if (plat_data->get_country_code) {
349 #ifdef CUSTOM_FORCE_NODFS_FLAG
350 return plat_data->get_country_code(ccode, flags);
351 #else
352 return plat_data->get_country_code(ccode);
353 #endif /* CUSTOM_COUNTRY_CODE */
354 }
355 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) */
356
357 return NULL;
358 }
359
360 #ifndef CUSTOMER_HW
wifi_plat_dev_drv_probe(struct platform_device * pdev)361 static int wifi_plat_dev_drv_probe(struct platform_device *pdev)
362 {
363 struct resource *resource;
364 wifi_adapter_info_t *adapter;
365 #if defined(CONFIG_DTS) && defined(CUSTOMER_OOB)
366 int irq, gpio;
367 #endif /* CONFIG_DTS */
368
369 /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan")
370 * is kept for backward compatibility and supports only 1 adapter
371 */
372 ASSERT(dhd_wifi_platdata != NULL);
373 ASSERT(dhd_wifi_platdata->num_adapters == 1);
374 adapter = &dhd_wifi_platdata->adapters[0];
375 #if defined(CONFIG_WIFI_CONTROL_FUNC)
376 adapter->wifi_plat_data = (struct wifi_platform_data *)(pdev->dev.platform_data);
377 #else
378 adapter->wifi_plat_data = (void *)&dhd_wlan_control;
379 #endif
380
381 #ifdef BCMDHD_PLATDEV
382 adapter->pdev = pdev;
383 wifi_plat_dev_probe_ret = dhd_wlan_init_plat_data(adapter);
384 if (!wifi_plat_dev_probe_ret)
385 wifi_plat_dev_probe_ret = dhd_wifi_platform_load();
386 return wifi_plat_dev_probe_ret;
387 #endif
388
389 resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcmdhd_wlan_irq");
390 if (resource == NULL)
391 resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcm4329_wlan_irq");
392 if (resource) {
393 adapter->irq_num = resource->start;
394 adapter->intr_flags = resource->flags & IRQF_TRIGGER_MASK;
395 #ifdef DHD_ISR_NO_SUSPEND
396 adapter->intr_flags |= IRQF_NO_SUSPEND;
397 #endif
398 }
399
400 #ifdef CONFIG_DTS
401 wifi_regulator = regulator_get(&pdev->dev, "wlreg_on");
402 if (wifi_regulator == NULL) {
403 DHD_ERROR(("%s regulator is null\n", __FUNCTION__));
404 return -1;
405 }
406
407 #if defined(CUSTOMER_OOB)
408 /* This is to get the irq for the OOB */
409 gpio = of_get_gpio(pdev->dev.of_node, 0);
410
411 if (gpio < 0) {
412 DHD_ERROR(("%s gpio information is incorrect\n", __FUNCTION__));
413 return -1;
414 }
415 irq = gpio_to_irq(gpio);
416 if (irq < 0) {
417 DHD_ERROR(("%s irq information is incorrect\n", __FUNCTION__));
418 return -1;
419 }
420 adapter->irq_num = irq;
421
422 /* need to change the flags according to our requirement */
423 #ifdef HW_OOB
424 adapter->intr_flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL |
425 IORESOURCE_IRQ_SHAREABLE;
426 #else
427 adapter->intr_flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE |
428 IORESOURCE_IRQ_SHAREABLE;
429 #endif
430 #endif
431 #endif /* CONFIG_DTS */
432
433 wifi_plat_dev_probe_ret = dhd_wifi_platform_load();
434 return wifi_plat_dev_probe_ret;
435 }
436
wifi_plat_dev_drv_remove(struct platform_device * pdev)437 static int wifi_plat_dev_drv_remove(struct platform_device *pdev)
438 {
439 wifi_adapter_info_t *adapter;
440
441 /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan")
442 * is kept for backward compatibility and supports only 1 adapter
443 */
444 ASSERT(dhd_wifi_platdata != NULL);
445 ASSERT(dhd_wifi_platdata->num_adapters == 1);
446 adapter = &dhd_wifi_platdata->adapters[0];
447 if (is_power_on) {
448 #ifdef BCMPCIE
449 wifi_platform_bus_enumerate(adapter, FALSE);
450 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
451 #else
452 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
453 wifi_platform_bus_enumerate(adapter, FALSE);
454 #endif /* BCMPCIE */
455 }
456
457 #ifdef CONFIG_DTS
458 regulator_put(wifi_regulator);
459 #endif /* CONFIG_DTS */
460 #ifdef BCMDHD_PLATDEV
461 dhd_wlan_deinit_plat_data(adapter);
462 #endif
463 return 0;
464 }
465
wifi_plat_dev_drv_suspend(struct platform_device * pdev,pm_message_t state)466 static int wifi_plat_dev_drv_suspend(struct platform_device *pdev, pm_message_t state)
467 {
468 DHD_TRACE(("##> %s\n", __FUNCTION__));
469 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) && \
470 defined(BCMSDIO)
471 bcmsdh_oob_intr_set(0);
472 #endif /* (OOB_INTR_ONLY) */
473 return 0;
474 }
475
wifi_plat_dev_drv_resume(struct platform_device * pdev)476 static int wifi_plat_dev_drv_resume(struct platform_device *pdev)
477 {
478 DHD_TRACE(("##> %s\n", __FUNCTION__));
479 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) && \
480 defined(BCMSDIO)
481 if (dhd_os_check_if_up(wl_cfg80211_get_dhdp()))
482 bcmsdh_oob_intr_set(1);
483 #endif /* (OOB_INTR_ONLY) */
484 return 0;
485 }
486
487 #ifdef CONFIG_DTS
488 static const struct of_device_id wifi_device_dt_match[] = {
489 { .compatible = "android,bcmdhd_wlan", },
490 {},
491 };
492 #endif /* CONFIG_DTS */
493
494 static struct platform_driver wifi_platform_dev_driver = {
495 .probe = wifi_plat_dev_drv_probe,
496 .remove = wifi_plat_dev_drv_remove,
497 .suspend = wifi_plat_dev_drv_suspend,
498 .resume = wifi_plat_dev_drv_resume,
499 #ifdef DHD_WIFI_SHUTDOWN
500 .shutdown = wifi_plat_dev_drv_shutdown,
501 #endif /* DHD_WIFI_SHUTDOWN */
502 .driver = {
503 .name = WIFI_PLAT_NAME,
504 #ifdef CONFIG_DTS
505 .of_match_table = wifi_device_dt_match,
506 #endif /* CONFIG_DTS */
507 }
508 };
509
510 static struct platform_driver wifi_platform_dev_driver_legacy = {
511 .probe = wifi_plat_dev_drv_probe,
512 .remove = wifi_plat_dev_drv_remove,
513 .suspend = wifi_plat_dev_drv_suspend,
514 .resume = wifi_plat_dev_drv_resume,
515 #ifdef DHD_WIFI_SHUTDOWN
516 .shutdown = wifi_plat_dev_drv_shutdown,
517 #endif /* DHD_WIFI_SHUTDOWN */
518 .driver = {
519 .name = WIFI_PLAT_NAME2,
520 }
521 };
522
523 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 3, 0)
wifi_platdev_match(struct device * dev,const void * data)524 static int wifi_platdev_match(struct device *dev, const void *data)
525 #else
526 static int wifi_platdev_match(struct device *dev, void *data)
527 #endif /* LINUX_VER >= 5.3.0 */
528 {
529 char *name = (char*)data;
530 const struct platform_device *pdev;
531 GCC_DIAGNOSTIC_PUSH_SUPPRESS_CAST();
532 pdev = to_platform_device(dev);
533 GCC_DIAGNOSTIC_POP();
534
535 if (strcmp(pdev->name, name) == 0) {
536 DHD_ERROR(("found wifi platform device %s\n", name));
537 return TRUE;
538 }
539
540 return FALSE;
541 }
542 #endif
543
wifi_ctrlfunc_register_drv(void)544 static int wifi_ctrlfunc_register_drv(void)
545 {
546 wifi_adapter_info_t *adapter;
547
548 #ifndef CUSTOMER_HW
549 int err = 0;
550 struct device *dev1, *dev2;
551 dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
552 dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
553 #endif
554
555 #ifdef BCMDHD_MODULAR
556 // dhd_wlan_init();
557 #ifdef WBRC
558 wbrc_init();
559 #endif /* WBRC */
560 #endif /* BCMDHD_MODULAR */
561
562 #if !defined(CONFIG_DTS) && !defined(CUSTOMER_HW)
563 if (!dts_enabled) {
564 if (dev1 == NULL && dev2 == NULL) {
565 DHD_ERROR(("no wifi platform data, skip\n"));
566 return -ENXIO;
567 }
568 }
569 #endif /* !defined(CONFIG_DTS) */
570
571 /* multi-chip support not enabled, build one adapter information for
572 * DHD (either SDIO, USB or PCIe)
573 */
574 adapter = kzalloc(sizeof(wifi_adapter_info_t), GFP_KERNEL);
575 if (adapter == NULL) {
576 DHD_ERROR(("%s:adapter alloc failed", __FUNCTION__));
577 return -ENOMEM;
578 }
579 adapter->name = "DHD generic adapter";
580 adapter->index = 0;
581 adapter->bus_type = -1;
582 adapter->bus_num = -1;
583 adapter->slot_num = -1;
584 adapter->irq_num = -1;
585 is_power_on = FALSE;
586 wifi_plat_dev_probe_ret = 0;
587 dhd_wifi_platdata = kzalloc(sizeof(bcmdhd_wifi_platdata_t), GFP_KERNEL);
588 dhd_wifi_platdata->num_adapters = 1;
589 dhd_wifi_platdata->adapters = adapter;
590 init_waitqueue_head(&adapter->status_event);
591
592 #ifndef CUSTOMER_HW
593 if (dev1) {
594 err = platform_driver_register(&wifi_platform_dev_driver);
595 if (err) {
596 DHD_ERROR(("%s: failed to register wifi ctrl func driver\n",
597 __FUNCTION__));
598 return err;
599 }
600 }
601 if (dev2) {
602 err = platform_driver_register(&wifi_platform_dev_driver_legacy);
603 if (err) {
604 DHD_ERROR(("%s: failed to register wifi ctrl func legacy driver\n",
605 __FUNCTION__));
606 return err;
607 }
608 }
609 #endif
610
611 #if !defined(CONFIG_DTS)
612 if (dts_enabled) {
613 adapter->wifi_plat_data = (void *)&dhd_wlan_control;
614 #ifdef CUSTOMER_HW
615 wifi_plat_dev_probe_ret = dhd_wlan_init_plat_data(adapter);
616 if (wifi_plat_dev_probe_ret)
617 return wifi_plat_dev_probe_ret;
618 #endif
619 #ifdef DHD_ISR_NO_SUSPEND
620 adapter->intr_flags |= IRQF_NO_SUSPEND;
621 #endif
622 wifi_plat_dev_probe_ret = dhd_wifi_platform_load();
623 }
624 #endif /* !defined(CONFIG_DTS) */
625
626 #if defined(CONFIG_DTS) && !defined(CUSTOMER_HW)
627 wifi_plat_dev_probe_ret = platform_driver_register(&wifi_platform_dev_driver);
628 #endif /* CONFIG_DTS */
629
630 /* return probe function's return value if registeration succeeded */
631 return wifi_plat_dev_probe_ret;
632 }
633
wifi_ctrlfunc_unregister_drv(void)634 void wifi_ctrlfunc_unregister_drv(void)
635 {
636 #ifndef CONFIG_DTS
637 wifi_adapter_info_t *adapter = NULL;
638 #endif
639
640 #if defined(CONFIG_DTS) && !defined(CUSTOMER_HW)
641 DHD_ERROR(("unregister wifi platform drivers\n"));
642 platform_driver_unregister(&wifi_platform_dev_driver);
643 #else
644 #ifndef CUSTOMER_HW
645 struct device *dev1, *dev2;
646 dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
647 dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
648 if (!dts_enabled)
649 if (dev1 == NULL && dev2 == NULL)
650 return;
651 #endif
652 DHD_ERROR(("unregister wifi platform drivers\n"));
653 #ifndef CUSTOMER_HW
654 if (dev1)
655 platform_driver_unregister(&wifi_platform_dev_driver);
656 if (dev2)
657 platform_driver_unregister(&wifi_platform_dev_driver_legacy);
658 #endif
659 if (dts_enabled) {
660 adapter = &dhd_wifi_platdata->adapters[0];
661 if (is_power_on) {
662 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
663 }
664 wifi_platform_bus_enumerate(adapter, FALSE);
665 }
666 #ifdef BCMDHD_MODULAR
667 // dhd_wlan_deinit();
668 #ifdef WBRC
669 wbrc_exit();
670 #endif /* WBRC */
671 #endif /* BCMDHD_MODULAR */
672
673 #endif /* !defined(CONFIG_DTS) */
674
675 #if defined(CUSTOMER_HW)
676 dhd_wlan_deinit_plat_data(adapter);
677 #endif
678
679 kfree(dhd_wifi_platdata->adapters);
680 dhd_wifi_platdata->adapters = NULL;
681 dhd_wifi_platdata->num_adapters = 0;
682 kfree(dhd_wifi_platdata);
683 dhd_wifi_platdata = NULL;
684 }
685
686 #ifndef CUSTOMER_HW
bcmdhd_wifi_plat_dev_drv_probe(struct platform_device * pdev)687 static int bcmdhd_wifi_plat_dev_drv_probe(struct platform_device *pdev)
688 {
689 dhd_wifi_platdata = (bcmdhd_wifi_platdata_t *)(pdev->dev.platform_data);
690
691 return dhd_wifi_platform_load();
692 }
693
bcmdhd_wifi_plat_dev_drv_remove(struct platform_device * pdev)694 static int bcmdhd_wifi_plat_dev_drv_remove(struct platform_device *pdev)
695 {
696 int i;
697 wifi_adapter_info_t *adapter;
698 ASSERT(dhd_wifi_platdata != NULL);
699
700 /* power down all adapters */
701 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
702 adapter = &dhd_wifi_platdata->adapters[i];
703 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
704 wifi_platform_bus_enumerate(adapter, FALSE);
705 }
706 return 0;
707 }
708
709 static struct platform_driver dhd_wifi_platform_dev_driver = {
710 .probe = bcmdhd_wifi_plat_dev_drv_probe,
711 .remove = bcmdhd_wifi_plat_dev_drv_remove,
712 .driver = {
713 .name = WIFI_PLAT_EXT,
714 }
715 };
716 #endif
717
dhd_wifi_platform_register_drv(void)718 int dhd_wifi_platform_register_drv(void)
719 {
720 int err = 0;
721 #ifndef CUSTOMER_HW
722 struct device *dev;
723
724 /* register Broadcom wifi platform data driver if multi-chip is enabled,
725 * otherwise use Android style wifi platform data (aka wifi control function)
726 * if it exists
727 *
728 * to support multi-chip DHD, Broadcom wifi platform data device must
729 * be added in kernel early boot (e.g. board config file).
730 */
731 if (cfg_multichip) {
732 dev = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_EXT, wifi_platdev_match);
733 if (dev == NULL) {
734 DHD_ERROR(("bcmdhd wifi platform data device not found!!\n"));
735 return -ENXIO;
736 }
737 err = platform_driver_register(&dhd_wifi_platform_dev_driver);
738 } else
739 #endif
740 {
741 err = wifi_ctrlfunc_register_drv();
742
743 /* no wifi ctrl func either, load bus directly and ignore this error */
744 if (err) {
745 if (err == -ENXIO) {
746 /* wifi ctrl function does not exist */
747 err = dhd_wifi_platform_load();
748 } else {
749 /* unregister driver due to initialization failure */
750 wifi_ctrlfunc_unregister_drv();
751 }
752 }
753 }
754
755 return err;
756 }
757
758 #ifdef BCMPCIE
dhd_wifi_platform_load_pcie(void)759 static int dhd_wifi_platform_load_pcie(void)
760 {
761 int err = 0;
762 int i;
763 wifi_adapter_info_t *adapter;
764
765 BCM_REFERENCE(i);
766 BCM_REFERENCE(adapter);
767
768 if (dhd_wifi_platdata == NULL) {
769 /* XXX For x86 Bringup PC or BRIX */
770 err = dhd_bus_register();
771 } else {
772 #ifdef DHD_SUPPORT_HDM
773 if (dhd_download_fw_on_driverload || hdm_trigger_init)
774 #else
775 if (dhd_download_fw_on_driverload)
776 #endif /* DHD_SUPPORT_HDM */
777 {
778 /* power up all adapters */
779 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
780 int retry = POWERUP_MAX_RETRY;
781 adapter = &dhd_wifi_platdata->adapters[i];
782
783 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
784 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
785 adapter->irq_num, adapter->intr_flags, adapter->fw_path,
786 adapter->nv_path));
787 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
788 adapter->bus_type, adapter->bus_num, adapter->slot_num));
789
790 do {
791 err = wifi_platform_set_power(adapter,
792 TRUE, WIFI_TURNON_DELAY);
793 if (err) {
794 DHD_ERROR(("failed to power up %s,"
795 " %d retry left\n",
796 adapter->name, retry));
797 /* WL_REG_ON state unknown, Power off forcely */
798 wifi_platform_set_power(adapter,
799 FALSE, WIFI_TURNOFF_DELAY);
800 continue;
801 } else {
802 err = wifi_platform_bus_enumerate(adapter, TRUE);
803 if (err) {
804 DHD_ERROR(("failed to enumerate bus %s, "
805 "%d retry left\n",
806 adapter->name, retry));
807 wifi_platform_set_power(adapter, FALSE,
808 WIFI_TURNOFF_DELAY);
809 } else {
810 break;
811 }
812 }
813 } while (retry--);
814
815 if (retry < 0) {
816 DHD_ERROR(("failed to power up %s, max retry reached**\n",
817 adapter->name));
818 return -ENODEV;
819 }
820 }
821 }
822
823 err = dhd_bus_register();
824
825 if (err) {
826 DHD_ERROR(("%s: pcie_register_driver failed\n", __FUNCTION__));
827 if (dhd_download_fw_on_driverload) {
828 /* power down all adapters */
829 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
830 adapter = &dhd_wifi_platdata->adapters[i];
831 wifi_platform_bus_enumerate(adapter, FALSE);
832 wifi_platform_set_power(adapter,
833 FALSE, WIFI_TURNOFF_DELAY);
834 }
835 }
836 }
837 }
838
839 return err;
840 }
841 #else
dhd_wifi_platform_load_pcie(void)842 static int dhd_wifi_platform_load_pcie(void)
843 {
844 return 0;
845 }
846 #endif /* BCMPCIE */
847
dhd_wifi_platform_unregister_drv(void)848 void dhd_wifi_platform_unregister_drv(void)
849 {
850 #ifndef CUSTOMER_HW
851 if (cfg_multichip)
852 platform_driver_unregister(&dhd_wifi_platform_dev_driver);
853 else
854 #endif
855 wifi_ctrlfunc_unregister_drv();
856 }
857
858 extern int dhd_watchdog_prio;
859 extern int dhd_dpc_prio;
860 extern uint dhd_deferred_tx;
861 #if defined(OEM_ANDROID) && (defined(BCMLXSDMMC) || defined(BCMDBUS))
862 extern struct semaphore dhd_registration_sem;
863 #endif /* defined(OEM_ANDROID) && defined(BCMLXSDMMC) */
864
865 #ifdef BCMSDIO
dhd_wifi_platform_load_sdio(void)866 static int dhd_wifi_platform_load_sdio(void)
867 {
868 int i;
869 int err = 0;
870 wifi_adapter_info_t *adapter;
871
872 BCM_REFERENCE(i);
873 BCM_REFERENCE(adapter);
874 /* Sanity check on the module parameters
875 * - Both watchdog and DPC as tasklets are ok
876 * - If both watchdog and DPC are threads, TX must be deferred
877 */
878 if (!(dhd_watchdog_prio < 0 && dhd_dpc_prio < 0) &&
879 !(dhd_watchdog_prio >= 0 && dhd_dpc_prio >= 0 && dhd_deferred_tx))
880 return -EINVAL;
881
882 #if defined(OEM_ANDROID) && defined(BCMLXSDMMC) && !defined(DHD_PRELOAD)
883 sema_init(&dhd_registration_sem, 0);
884 #endif
885
886 if (dhd_wifi_platdata == NULL) {
887 DHD_ERROR(("DHD wifi platform data is required for Android build\n"));
888 DHD_ERROR(("DHD registering bus directly\n"));
889 /* x86 bring-up PC needs no power-up operations */
890 err = dhd_bus_register();
891 return err;
892 }
893
894 #if defined(OEM_ANDROID) && defined(BCMLXSDMMC) && !defined(DHD_PRELOAD)
895 /* power up all adapters */
896 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
897 bool chip_up = FALSE;
898 int retry = POWERUP_MAX_RETRY;
899 #ifndef DHD_INSMOD_NOWAIT
900 struct semaphore dhd_chipup_sem;
901 #endif
902
903 adapter = &dhd_wifi_platdata->adapters[i];
904
905 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
906 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
907 adapter->irq_num, adapter->intr_flags, adapter->fw_path, adapter->nv_path));
908 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
909 adapter->bus_type, adapter->bus_num, adapter->slot_num));
910
911 do {
912 #ifdef DHD_INSMOD_NOWAIT
913 err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY);
914 if (err) {
915 DHD_ERROR(("%s: wifi pwr on error ! \n", __FUNCTION__));
916 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
917 continue;
918 } else {
919 wifi_platform_bus_enumerate(adapter, TRUE);
920 chip_up = TRUE;
921 break;
922 }
923 #else
924 sema_init(&dhd_chipup_sem, 0);
925 err = dhd_bus_reg_sdio_notify(&dhd_chipup_sem);
926 if (err) {
927 DHD_ERROR(("%s dhd_bus_reg_sdio_notify fail(%d)\n\n",
928 __FUNCTION__, err));
929 return err;
930 }
931 err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY);
932 if (err) {
933 DHD_ERROR(("%s: wifi pwr on error ! \n", __FUNCTION__));
934 dhd_bus_unreg_sdio_notify();
935 /* WL_REG_ON state unknown, Power off forcely */
936 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
937 continue;
938 } else {
939 wifi_platform_bus_enumerate(adapter, TRUE);
940 }
941
942 if (down_timeout(&dhd_chipup_sem, msecs_to_jiffies(POWERUP_WAIT_MS)) == 0) {
943 dhd_bus_unreg_sdio_notify();
944 chip_up = TRUE;
945 break;
946 }
947
948 DHD_ERROR(("failed to power up %s, %d retry left\n", adapter->name, retry));
949 dhd_bus_unreg_sdio_notify();
950 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
951 wifi_platform_bus_enumerate(adapter, FALSE);
952 #endif
953 } while (retry--);
954
955 if (!chip_up) {
956 DHD_ERROR(("failed to power up %s, max retry reached**\n", adapter->name));
957 return -ENODEV;
958 }
959
960 }
961
962 err = dhd_bus_register();
963
964 if (err) {
965 DHD_ERROR(("%s: sdio_register_driver failed\n", __FUNCTION__));
966 goto fail;
967 }
968
969 #ifndef DHD_INSMOD_NOWAIT
970 /*
971 * Wait till MMC sdio_register_driver callback called and made driver attach.
972 * It's needed to make sync up exit from dhd insmod and
973 * Kernel MMC sdio device callback registration
974 */
975 err = down_timeout(&dhd_registration_sem, msecs_to_jiffies(DHD_REGISTRATION_TIMEOUT));
976 if (err) {
977 DHD_ERROR(("%s: sdio_register_driver timeout or error \n", __FUNCTION__));
978 dhd_bus_unregister();
979 goto fail;
980 }
981 #endif
982
983 return err;
984
985 fail:
986 /* power down all adapters */
987 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
988 adapter = &dhd_wifi_platdata->adapters[i];
989 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
990 wifi_platform_bus_enumerate(adapter, FALSE);
991 }
992 #else
993 /* x86 bring-up PC needs no power-up operations */
994 err = dhd_bus_register();
995 #endif /* defined(OEM_ANDROID) && defined(BCMLXSDMMC) */
996
997 return err;
998 }
999 #else /* BCMSDIO */
dhd_wifi_platform_load_sdio(void)1000 static int dhd_wifi_platform_load_sdio(void)
1001 {
1002 return 0;
1003 }
1004 #endif /* BCMSDIO */
1005
1006 #ifdef BCMDBUS
dhd_wifi_platform_load_usb(void)1007 static int dhd_wifi_platform_load_usb(void)
1008 {
1009 int err = 0;
1010 #if !defined(DHD_PRELOAD)
1011 wifi_adapter_info_t *adapter;
1012 s32 timeout = -1;
1013 int i;
1014 #endif
1015
1016 #if !defined(DHD_PRELOAD)
1017 /* power down all adapters */
1018 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
1019 adapter = &dhd_wifi_platdata->adapters[i];
1020 wifi_platform_set_power(adapter, FALSE, 0);
1021 if (err) {
1022 DHD_ERROR(("failed to wifi_platform_set_power off %s\n", adapter->name));
1023 goto exit;
1024 }
1025 }
1026 OSL_SLEEP(200);
1027 #endif
1028
1029 err = dhd_bus_register();
1030 if (err) {
1031 DHD_ERROR(("%s: usb_register failed\n", __FUNCTION__));
1032 goto exit;
1033 }
1034
1035 #if !defined(DHD_PRELOAD)
1036 /* power up all adapters */
1037 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
1038 adapter = &dhd_wifi_platdata->adapters[i];
1039 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
1040 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
1041 adapter->irq_num, adapter->intr_flags, adapter->fw_path, adapter->nv_path));
1042 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
1043 adapter->bus_type, adapter->bus_num, adapter->slot_num));
1044 err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY);
1045 if (err) {
1046 DHD_ERROR(("failed to wifi_platform_set_power on %s\n", adapter->name));
1047 goto fail;
1048 }
1049 timeout = wait_event_interruptible_timeout(adapter->status_event,
1050 wifi_get_adapter_status(adapter, WIFI_STATUS_NET_ATTACHED),
1051 msecs_to_jiffies(DHD_REGISTRATION_TIMEOUT));
1052 if (timeout <= 0) {
1053 err = -1;
1054 DHD_ERROR(("%s: usb_register_driver timeout\n", __FUNCTION__));
1055 goto fail;
1056 }
1057 }
1058 #endif
1059
1060 exit:
1061 return err;
1062
1063 #if !defined(DHD_PRELOAD)
1064 fail:
1065 dhd_bus_unregister();
1066 /* power down all adapters */
1067 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
1068 adapter = &dhd_wifi_platdata->adapters[i];
1069 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
1070 }
1071
1072 return err;
1073 #endif
1074 }
1075 #else /* BCMDBUS */
dhd_wifi_platform_load_usb(void)1076 static int dhd_wifi_platform_load_usb(void)
1077 {
1078 return 0;
1079 }
1080 #endif /* BCMDBUS */
1081
dhd_wifi_platform_load()1082 static int dhd_wifi_platform_load()
1083 {
1084 int err = 0;
1085 printf("%s: Enter\n", __FUNCTION__);
1086
1087 #if defined(OEM_ANDROID)
1088 wl_android_init();
1089 #endif /* OEM_ANDROID */
1090
1091 if ((err = dhd_wifi_platform_load_usb()))
1092 goto end;
1093 else if ((err = dhd_wifi_platform_load_sdio()))
1094 goto end;
1095 else
1096 err = dhd_wifi_platform_load_pcie();
1097
1098 end:
1099 #if defined(OEM_ANDROID)
1100 if (err)
1101 wl_android_exit();
1102 #if !defined(MULTIPLE_SUPPLICANT)
1103 else
1104 wl_android_post_init();
1105 #endif
1106 #endif /* OEM_ANDROID */
1107
1108 return err;
1109 }
1110