1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Linux platform device for DHD WLAN adapter
4 *
5 * Copyright (C) 1999-2019, Broadcom.
6 *
7 * Unless you and Broadcom execute a separate written software license
8 * agreement governing use of this software, this software is licensed to you
9 * under the terms of the GNU General Public License version 2 (the "GPL"),
10 * available at http://www.broadcom.com/licenses/GPLv2.php, with the
11 * following added to such license:
12 *
13 * As a special exception, the copyright holders of this software give you
14 * permission to link this software with independent modules, and to copy and
15 * distribute the resulting executable under terms of your choice, provided that
16 * you also meet, for each linked independent module, the terms and conditions of
17 * the license of that module. An independent module is a module which is not
18 * derived from this software. The special exception does not apply to any
19 * modifications of the software.
20 *
21 * Notwithstanding the above, under no circumstances may you combine this
22 * software in any way with any other Broadcom software provided under a license
23 * other than the GPL, without Broadcom's express prior written consent.
24 *
25 *
26 * <<Broadcom-WL-IPTag/Open:>>
27 *
28 * $Id: dhd_linux_platdev.c 805835 2019-02-20 12:35:44Z $
29 */
30 #include <typedefs.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/init.h>
34 #include <linux/platform_device.h>
35 #include <bcmutils.h>
36 #include <linux_osl.h>
37 #include <dhd_dbg.h>
38 #include <dngl_stats.h>
39 #include <dhd.h>
40 #include <dhd_bus.h>
41 #include <dhd_linux.h>
42 #include <wl_android.h>
43 #if defined(CONFIG_WIFI_CONTROL_FUNC)
44 #include <linux/wlan_plat.h>
45 #endif // endif
46 #ifdef CONFIG_DTS
47 #include<linux/regulator/consumer.h>
48 #include<linux/of_gpio.h>
49 #endif /* CONFIG_DTS */
50
51 #if defined(CUSTOMER_HW)
52 extern int dhd_wlan_init_plat_data(void);
53 extern void dhd_wlan_deinit_plat_data(wifi_adapter_info_t *adapter);
54 #endif /* CUSTOMER_HW */
55
56 #define WIFI_PLAT_NAME "bcmdhd_wlan"
57 #define WIFI_PLAT_NAME2 "bcm4329_wlan"
58 #define WIFI_PLAT_EXT "bcmdhd_wifi_platform"
59
60 #ifdef DHD_WIFI_SHUTDOWN
61 extern void wifi_plat_dev_drv_shutdown(struct platform_device *pdev);
62 #endif // endif
63
64 #ifdef CONFIG_DTS
65 struct regulator *wifi_regulator = NULL;
66 #endif /* CONFIG_DTS */
67
68 bool cfg_multichip = FALSE;
69 bcmdhd_wifi_platdata_t *dhd_wifi_platdata = NULL;
70 static int wifi_plat_dev_probe_ret = 0;
71 static bool is_power_on = FALSE;
72 #if !defined(CONFIG_DTS)
73 #if defined(DHD_OF_SUPPORT)
74 static bool dts_enabled = TRUE;
75 extern struct resource dhd_wlan_resources;
76 extern struct wifi_platform_data dhd_wlan_control;
77 #else
78 static bool dts_enabled = FALSE;
79 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
80 #pragma GCC diagnostic push
81 #pragma GCC diagnostic ignored "-Wmissing-field-initializers"
82 #endif // endif
83 struct resource dhd_wlan_resources = {0};
84 struct wifi_platform_data dhd_wlan_control = {0};
85 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
86 #pragma GCC diagnostic pop
87 #endif // endif
88 #endif /* CONFIG_OF && !defined(CONFIG_ARCH_MSM) */
89 #endif /* !defind(CONFIG_DTS) */
90
91 static int dhd_wifi_platform_load(void);
92
93 extern void* wl_cfg80211_get_dhdp(struct net_device *dev);
94
95 extern int dhd_wlan_init(void);
96 extern int dhd_wlan_deinit(void);
97
98 #ifdef ENABLE_4335BT_WAR
99 extern int bcm_bt_lock(int cookie);
100 extern void bcm_bt_unlock(int cookie);
101 static int lock_cookie_wifi = 'W' | 'i'<<8 | 'F'<<16 | 'i'<<24; /* cookie is "WiFi" */
102 #endif /* ENABLE_4335BT_WAR */
103
dhd_wifi_platform_attach_adapter(uint32 bus_type,uint32 bus_num,uint32 slot_num,unsigned long status)104 wifi_adapter_info_t* dhd_wifi_platform_attach_adapter(uint32 bus_type,
105 uint32 bus_num, uint32 slot_num, unsigned long status)
106 {
107 int i;
108
109 if (dhd_wifi_platdata == NULL)
110 return NULL;
111
112 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
113 wifi_adapter_info_t *adapter = &dhd_wifi_platdata->adapters[i];
114 if ((adapter->bus_type == -1 || adapter->bus_type == bus_type) &&
115 (adapter->bus_num == -1 || adapter->bus_num == bus_num) &&
116 (adapter->slot_num == -1 || adapter->slot_num == slot_num)
117 #if defined(ENABLE_INSMOD_NO_FW_LOAD)
118 && (wifi_chk_adapter_status(adapter, status))
119 #endif
120 ) {
121 DHD_ERROR(("attach adapter info '%s'\n", adapter->name));
122 return adapter;
123 }
124 }
125 return NULL;
126 }
127
dhd_wifi_platform_get_adapter(uint32 bus_type,uint32 bus_num,uint32 slot_num)128 wifi_adapter_info_t* dhd_wifi_platform_get_adapter(uint32 bus_type, uint32 bus_num, uint32 slot_num)
129 {
130 int i;
131
132 if (dhd_wifi_platdata == NULL)
133 return NULL;
134
135 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
136 wifi_adapter_info_t *adapter = &dhd_wifi_platdata->adapters[i];
137 if ((adapter->bus_type == -1 || adapter->bus_type == bus_type) &&
138 (adapter->bus_num == -1 || adapter->bus_num == bus_num) &&
139 (adapter->slot_num == -1 || adapter->slot_num == slot_num)) {
140 DHD_TRACE(("found adapter info '%s'\n", adapter->name));
141 return adapter;
142 }
143 }
144 return NULL;
145 }
146
wifi_platform_prealloc(wifi_adapter_info_t * adapter,int section,unsigned long size)147 void* wifi_platform_prealloc(wifi_adapter_info_t *adapter, int section, unsigned long size)
148 {
149 void *alloc_ptr = NULL;
150 struct wifi_platform_data *plat_data;
151
152 if (!adapter || !adapter->wifi_plat_data)
153 return NULL;
154 plat_data = adapter->wifi_plat_data;
155 if (plat_data->mem_prealloc) {
156 alloc_ptr = plat_data->mem_prealloc(section, size);
157 if (alloc_ptr) {
158 DHD_INFO(("success alloc section %d\n", section));
159 if (size != 0L)
160 bzero(alloc_ptr, size);
161 return alloc_ptr;
162 }
163 } else
164 return NULL;
165
166 DHD_ERROR(("%s: failed to alloc static mem section %d\n", __FUNCTION__, section));
167 return NULL;
168 }
169
wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t * adapter)170 void* wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t *adapter)
171 {
172 struct wifi_platform_data *plat_data;
173
174 if (!adapter || !adapter->wifi_plat_data)
175 return NULL;
176 plat_data = adapter->wifi_plat_data;
177 return plat_data->mem_prealloc;
178 }
179
wifi_platform_get_irq_number(wifi_adapter_info_t * adapter,unsigned long * irq_flags_ptr)180 int wifi_platform_get_irq_number(wifi_adapter_info_t *adapter, unsigned long *irq_flags_ptr)
181 {
182 if (adapter == NULL)
183 return -1;
184 if (irq_flags_ptr)
185 *irq_flags_ptr = adapter->intr_flags;
186 return adapter->irq_num;
187 }
188
wifi_platform_set_power(wifi_adapter_info_t * adapter,bool on,unsigned long msec)189 int wifi_platform_set_power(wifi_adapter_info_t *adapter, bool on, unsigned long msec)
190 {
191 int err = 0;
192 #ifndef CONFIG_DTS
193 struct wifi_platform_data *plat_data;
194 #endif
195 #ifdef BT_OVER_SDIO
196 if (is_power_on == on) {
197 return -EINVAL;
198 }
199 #endif /* BT_OVER_SDIO */
200 if (on) {
201 wifi_set_adapter_status(adapter, WIFI_STATUS_POWER_ON);
202 } else {
203 wifi_clr_adapter_status(adapter, WIFI_STATUS_POWER_ON);
204 }
205 #ifdef CONFIG_DTS
206 if (on) {
207 printf("======== PULL WL_REG_ON HIGH! ========\n");
208 err = regulator_enable(wifi_regulator);
209 is_power_on = TRUE;
210 }
211 else {
212 printf("======== PULL WL_REG_ON LOW! ========\n");
213 err = regulator_disable(wifi_regulator);
214 is_power_on = FALSE;
215 }
216 if (err < 0) {
217 DHD_ERROR(("%s: regulator enable/disable failed", __FUNCTION__));
218 goto fail;
219 }
220 #else
221 if (!adapter || !adapter->wifi_plat_data) {
222 err = -EINVAL;
223 goto fail;
224 }
225 plat_data = adapter->wifi_plat_data;
226
227 DHD_ERROR(("%s = %d, delay: %lu msec\n", __FUNCTION__, on, msec));
228 if (plat_data->set_power) {
229 #ifdef ENABLE_4335BT_WAR
230 if (on) {
231 printk("WiFi: trying to acquire BT lock\n");
232 if (bcm_bt_lock(lock_cookie_wifi) != 0)
233 printk("** WiFi: timeout in acquiring bt lock**\n");
234 printk("%s: btlock acquired\n", __FUNCTION__);
235 }
236 else {
237 /* For a exceptional case, release btlock */
238 bcm_bt_unlock(lock_cookie_wifi);
239 }
240 #endif /* ENABLE_4335BT_WAR */
241
242 #ifdef BUS_POWER_RESTORE
243 err = plat_data->set_power(on, adapter);
244 #else
245 err = plat_data->set_power(on);
246 #endif
247 }
248
249 if (msec && !err)
250 OSL_SLEEP(msec);
251
252 if (on && !err)
253 is_power_on = TRUE;
254 else
255 is_power_on = FALSE;
256
257 #endif /* CONFIG_DTS */
258
259 return err;
260 fail:
261 if (on) {
262 wifi_clr_adapter_status(adapter, WIFI_STATUS_POWER_ON);
263 } else {
264 wifi_set_adapter_status(adapter, WIFI_STATUS_POWER_ON);
265 }
266 return err;
267 }
268
wifi_platform_bus_enumerate(wifi_adapter_info_t * adapter,bool device_present)269 int wifi_platform_bus_enumerate(wifi_adapter_info_t *adapter, bool device_present)
270 {
271 int err = 0;
272 struct wifi_platform_data *plat_data;
273
274 if (!adapter || !adapter->wifi_plat_data)
275 return -EINVAL;
276 plat_data = adapter->wifi_plat_data;
277
278 DHD_ERROR(("%s device present %d\n", __FUNCTION__, device_present));
279 if (plat_data->set_carddetect) {
280 err = plat_data->set_carddetect(device_present);
281 }
282 return err;
283
284 }
285
wifi_platform_get_mac_addr(wifi_adapter_info_t * adapter,unsigned char * buf,char * name)286 int wifi_platform_get_mac_addr(wifi_adapter_info_t *adapter, unsigned char *buf,
287 char *name)
288 {
289 struct wifi_platform_data *plat_data;
290
291 DHD_ERROR(("%s\n", __FUNCTION__));
292 if (!buf || !adapter || !adapter->wifi_plat_data)
293 return -EINVAL;
294 plat_data = adapter->wifi_plat_data;
295 if (plat_data->get_mac_addr) {
296 #ifdef CUSTOM_MULTI_MAC
297 return plat_data->get_mac_addr(buf, name);
298 #else
299 return plat_data->get_mac_addr(buf);
300 #endif
301 }
302 return -EOPNOTSUPP;
303 }
304
305 void *
306 #ifdef CUSTOM_COUNTRY_CODE
wifi_platform_get_country_code(wifi_adapter_info_t * adapter,char * ccode,u32 flags)307 wifi_platform_get_country_code(wifi_adapter_info_t *adapter, char *ccode, u32 flags)
308 #else
309 wifi_platform_get_country_code(wifi_adapter_info_t *adapter, char *ccode)
310 #endif /* CUSTOM_COUNTRY_CODE */
311 {
312 /* get_country_code was added after 2.6.39 */
313 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
314 struct wifi_platform_data *plat_data;
315
316 if (!ccode || !adapter || !adapter->wifi_plat_data)
317 return NULL;
318 plat_data = adapter->wifi_plat_data;
319
320 DHD_TRACE(("%s\n", __FUNCTION__));
321 if (plat_data->get_country_code) {
322 #ifdef CUSTOM_FORCE_NODFS_FLAG
323 return plat_data->get_country_code(ccode, flags);
324 #else
325 return plat_data->get_country_code(ccode);
326 #endif /* CUSTOM_COUNTRY_CODE */
327 }
328 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) */
329
330 return NULL;
331 }
332
333 #ifndef CUSTOMER_HW
wifi_plat_dev_drv_probe(struct platform_device * pdev)334 static int wifi_plat_dev_drv_probe(struct platform_device *pdev)
335 {
336 struct resource *resource;
337 wifi_adapter_info_t *adapter;
338 #if defined(CONFIG_DTS) && defined(CUSTOMER_OOB)
339 int irq, gpio;
340 #endif /* CONFIG_DTS */
341
342 /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan")
343 * is kept for backward compatibility and supports only 1 adapter
344 */
345 ASSERT(dhd_wifi_platdata != NULL);
346 ASSERT(dhd_wifi_platdata->num_adapters == 1);
347 adapter = &dhd_wifi_platdata->adapters[0];
348 #if defined(CONFIG_WIFI_CONTROL_FUNC)
349 adapter->wifi_plat_data = (struct wifi_platform_data *)(pdev->dev.platform_data);
350 #else
351 adapter->wifi_plat_data = (void *)&dhd_wlan_control;
352 #endif
353
354 resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcmdhd_wlan_irq");
355 if (resource == NULL)
356 resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcm4329_wlan_irq");
357 if (resource) {
358 adapter->irq_num = resource->start;
359 adapter->intr_flags = resource->flags & IRQF_TRIGGER_MASK;
360 #ifdef DHD_ISR_NO_SUSPEND
361 adapter->intr_flags |= IRQF_NO_SUSPEND;
362 #endif // endif
363 }
364
365 #ifdef CONFIG_DTS
366 wifi_regulator = regulator_get(&pdev->dev, "wlreg_on");
367 if (wifi_regulator == NULL) {
368 DHD_ERROR(("%s regulator is null\n", __FUNCTION__));
369 return -1;
370 }
371
372 #if defined(CUSTOMER_OOB)
373 /* This is to get the irq for the OOB */
374 gpio = of_get_gpio(pdev->dev.of_node, 0);
375
376 if (gpio < 0) {
377 DHD_ERROR(("%s gpio information is incorrect\n", __FUNCTION__));
378 return -1;
379 }
380 irq = gpio_to_irq(gpio);
381 if (irq < 0) {
382 DHD_ERROR(("%s irq information is incorrect\n", __FUNCTION__));
383 return -1;
384 }
385 adapter->irq_num = irq;
386
387 /* need to change the flags according to our requirement */
388 adapter->intr_flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL |
389 IORESOURCE_IRQ_SHAREABLE;
390 #endif
391 #endif /* CONFIG_DTS */
392
393 wifi_plat_dev_probe_ret = dhd_wifi_platform_load();
394 return wifi_plat_dev_probe_ret;
395 }
396
wifi_plat_dev_drv_remove(struct platform_device * pdev)397 static int wifi_plat_dev_drv_remove(struct platform_device *pdev)
398 {
399 wifi_adapter_info_t *adapter;
400
401 /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan")
402 * is kept for backward compatibility and supports only 1 adapter
403 */
404 ASSERT(dhd_wifi_platdata != NULL);
405 ASSERT(dhd_wifi_platdata->num_adapters == 1);
406 adapter = &dhd_wifi_platdata->adapters[0];
407 if (is_power_on) {
408 #ifdef BCMPCIE
409 wifi_platform_bus_enumerate(adapter, FALSE);
410 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
411 #else
412 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
413 wifi_platform_bus_enumerate(adapter, FALSE);
414 #endif /* BCMPCIE */
415 }
416
417 #ifdef CONFIG_DTS
418 regulator_put(wifi_regulator);
419 #endif /* CONFIG_DTS */
420 return 0;
421 }
422
wifi_plat_dev_drv_suspend(struct platform_device * pdev,pm_message_t state)423 static int wifi_plat_dev_drv_suspend(struct platform_device *pdev, pm_message_t state)
424 {
425 DHD_TRACE(("##> %s\n", __FUNCTION__));
426 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) && \
427 defined(BCMSDIO)
428 bcmsdh_oob_intr_set(0);
429 #endif /* (OOB_INTR_ONLY) */
430 return 0;
431 }
432
wifi_plat_dev_drv_resume(struct platform_device * pdev)433 static int wifi_plat_dev_drv_resume(struct platform_device *pdev)
434 {
435 DHD_TRACE(("##> %s\n", __FUNCTION__));
436 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) && \
437 defined(BCMSDIO)
438 if (dhd_os_check_if_up(wl_cfg80211_get_dhdp()))
439 bcmsdh_oob_intr_set(1);
440 #endif /* (OOB_INTR_ONLY) */
441 return 0;
442 }
443
444 #ifdef CONFIG_DTS
445 static const struct of_device_id wifi_device_dt_match[] = {
446 { .compatible = "android,bcmdhd_wlan", },
447 {},
448 };
449 #endif /* CONFIG_DTS */
450
451 static struct platform_driver wifi_platform_dev_driver = {
452 .probe = wifi_plat_dev_drv_probe,
453 .remove = wifi_plat_dev_drv_remove,
454 .suspend = wifi_plat_dev_drv_suspend,
455 .resume = wifi_plat_dev_drv_resume,
456 #ifdef DHD_WIFI_SHUTDOWN
457 .shutdown = wifi_plat_dev_drv_shutdown,
458 #endif // endif
459 .driver = {
460 .name = WIFI_PLAT_NAME,
461 #ifdef CONFIG_DTS
462 .of_match_table = wifi_device_dt_match,
463 #endif /* CONFIG_DTS */
464 }
465 };
466
467 static struct platform_driver wifi_platform_dev_driver_legacy = {
468 .probe = wifi_plat_dev_drv_probe,
469 .remove = wifi_plat_dev_drv_remove,
470 .suspend = wifi_plat_dev_drv_suspend,
471 .resume = wifi_plat_dev_drv_resume,
472 #ifdef DHD_WIFI_SHUTDOWN
473 .shutdown = wifi_plat_dev_drv_shutdown,
474 #endif // endif
475 .driver = {
476 .name = WIFI_PLAT_NAME2,
477 }
478 };
479
wifi_platdev_match(struct device * dev,void * data)480 static int wifi_platdev_match(struct device *dev, void *data)
481 {
482 char *name = (char*)data;
483 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
484 #pragma GCC diagnostic push
485 #pragma GCC diagnostic ignored "-Wcast-qual"
486 #endif // endif
487 const struct platform_device *pdev = to_platform_device(dev);
488 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
489 #pragma GCC diagnostic pop
490 #endif // endif
491
492 if (strcmp(pdev->name, name) == 0) {
493 DHD_ERROR(("found wifi platform device %s\n", name));
494 return TRUE;
495 }
496
497 return FALSE;
498 }
499 #endif
500
wifi_ctrlfunc_register_drv(void)501 static int wifi_ctrlfunc_register_drv(void)
502 {
503 wifi_adapter_info_t *adapter;
504
505 #ifndef CUSTOMER_HW
506 int err = 0;
507 struct device *dev1, *dev2;
508 dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
509 dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
510 #endif
511
512 #ifdef BOARD_HIKEY_MODULAR
513 dhd_wlan_init();
514 #endif /* BOARD_HIKEY_MODULAR */
515
516 #if !defined(CONFIG_DTS) && !defined(CUSTOMER_HW)
517 if (!dts_enabled) {
518 if (dev1 == NULL && dev2 == NULL) {
519 DHD_ERROR(("no wifi platform data, skip\n"));
520 return -ENXIO;
521 }
522 }
523 #endif /* !defined(CONFIG_DTS) */
524
525 /* multi-chip support not enabled, build one adapter information for
526 * DHD (either SDIO, USB or PCIe)
527 */
528 adapter = kzalloc(sizeof(wifi_adapter_info_t), GFP_KERNEL);
529 if (adapter == NULL) {
530 DHD_ERROR(("%s:adapter alloc failed", __FUNCTION__));
531 return -ENOMEM;
532 }
533 adapter->name = "DHD generic adapter";
534 adapter->bus_type = -1;
535 adapter->bus_num = -1;
536 adapter->slot_num = -1;
537 adapter->irq_num = -1;
538 is_power_on = FALSE;
539 wifi_plat_dev_probe_ret = 0;
540 dhd_wifi_platdata = kzalloc(sizeof(bcmdhd_wifi_platdata_t), GFP_KERNEL);
541 dhd_wifi_platdata->num_adapters = 1;
542 dhd_wifi_platdata->adapters = adapter;
543 init_waitqueue_head(&adapter->status_event);
544
545 #ifndef CUSTOMER_HW
546 if (dev1) {
547 err = platform_driver_register(&wifi_platform_dev_driver);
548 if (err) {
549 DHD_ERROR(("%s: failed to register wifi ctrl func driver\n",
550 __FUNCTION__));
551 return err;
552 }
553 }
554 if (dev2) {
555 err = platform_driver_register(&wifi_platform_dev_driver_legacy);
556 if (err) {
557 DHD_ERROR(("%s: failed to register wifi ctrl func legacy driver\n",
558 __FUNCTION__));
559 return err;
560 }
561 }
562 #endif
563
564 #if !defined(CONFIG_DTS)
565 if (dts_enabled) {
566 struct resource *resource;
567 adapter->wifi_plat_data = (void *)&dhd_wlan_control;
568 resource = &dhd_wlan_resources;
569 #ifdef CUSTOMER_HW
570 wifi_plat_dev_probe_ret = dhd_wlan_init_plat_data();
571 if (wifi_plat_dev_probe_ret)
572 return wifi_plat_dev_probe_ret;
573 #endif
574 adapter->irq_num = resource->start;
575 adapter->intr_flags = resource->flags & IRQF_TRIGGER_MASK;
576 #ifdef DHD_ISR_NO_SUSPEND
577 adapter->intr_flags |= IRQF_NO_SUSPEND;
578 #endif // endif
579 wifi_plat_dev_probe_ret = dhd_wifi_platform_load();
580 }
581 #endif /* !defined(CONFIG_DTS) */
582
583 #if defined(CONFIG_DTS) && !defined(CUSTOMER_HW)
584 wifi_plat_dev_probe_ret = platform_driver_register(&wifi_platform_dev_driver);
585 #endif /* CONFIG_DTS */
586
587 /* return probe function's return value if registeration succeeded */
588 return wifi_plat_dev_probe_ret;
589 }
590
wifi_ctrlfunc_unregister_drv(void)591 void wifi_ctrlfunc_unregister_drv(void)
592 {
593 #ifndef CONFIG_DTS
594 wifi_adapter_info_t *adapter = NULL;
595 #endif
596
597 #if defined(CONFIG_DTS) && !defined(CUSTOMER_HW)
598 DHD_ERROR(("unregister wifi platform drivers\n"));
599 platform_driver_unregister(&wifi_platform_dev_driver);
600 #else
601 #ifndef CUSTOMER_HW
602 struct device *dev1, *dev2;
603 dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
604 dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
605 if (!dts_enabled)
606 if (dev1 == NULL && dev2 == NULL)
607 return;
608 #endif
609 DHD_ERROR(("unregister wifi platform drivers\n"));
610 #ifndef CUSTOMER_HW
611 if (dev1)
612 platform_driver_unregister(&wifi_platform_dev_driver);
613 if (dev2)
614 platform_driver_unregister(&wifi_platform_dev_driver_legacy);
615 #endif
616 if (dts_enabled) {
617 adapter = &dhd_wifi_platdata->adapters[0];
618 if (is_power_on) {
619 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
620 }
621 wifi_platform_bus_enumerate(adapter, FALSE);
622 }
623 #ifdef BOARD_HIKEY_MODULAR
624 dhd_wlan_deinit();
625 #endif /* BOARD_HIKEY_MODULAR */
626 #endif /* !defined(CONFIG_DTS) */
627
628 #if defined(CUSTOMER_HW)
629 dhd_wlan_deinit_plat_data(adapter);
630 #endif
631
632 kfree(dhd_wifi_platdata->adapters);
633 dhd_wifi_platdata->adapters = NULL;
634 dhd_wifi_platdata->num_adapters = 0;
635 kfree(dhd_wifi_platdata);
636 dhd_wifi_platdata = NULL;
637 }
638
639 #ifndef CUSTOMER_HW
bcmdhd_wifi_plat_dev_drv_probe(struct platform_device * pdev)640 static int bcmdhd_wifi_plat_dev_drv_probe(struct platform_device *pdev)
641 {
642 dhd_wifi_platdata = (bcmdhd_wifi_platdata_t *)(pdev->dev.platform_data);
643
644 return dhd_wifi_platform_load();
645 }
646
bcmdhd_wifi_plat_dev_drv_remove(struct platform_device * pdev)647 static int bcmdhd_wifi_plat_dev_drv_remove(struct platform_device *pdev)
648 {
649 int i;
650 wifi_adapter_info_t *adapter;
651 ASSERT(dhd_wifi_platdata != NULL);
652
653 /* power down all adapters */
654 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
655 adapter = &dhd_wifi_platdata->adapters[i];
656 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
657 wifi_platform_bus_enumerate(adapter, FALSE);
658 }
659 return 0;
660 }
661
662 static struct platform_driver dhd_wifi_platform_dev_driver = {
663 .probe = bcmdhd_wifi_plat_dev_drv_probe,
664 .remove = bcmdhd_wifi_plat_dev_drv_remove,
665 .driver = {
666 .name = WIFI_PLAT_EXT,
667 }
668 };
669 #endif
670
dhd_wifi_platform_register_drv(void)671 int dhd_wifi_platform_register_drv(void)
672 {
673 int err = 0;
674 #ifndef CUSTOMER_HW
675 struct device *dev;
676
677 /* register Broadcom wifi platform data driver if multi-chip is enabled,
678 * otherwise use Android style wifi platform data (aka wifi control function)
679 * if it exists
680 *
681 * to support multi-chip DHD, Broadcom wifi platform data device must
682 * be added in kernel early boot (e.g. board config file).
683 */
684 if (cfg_multichip) {
685 dev = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_EXT, wifi_platdev_match);
686 if (dev == NULL) {
687 DHD_ERROR(("bcmdhd wifi platform data device not found!!\n"));
688 return -ENXIO;
689 }
690 err = platform_driver_register(&dhd_wifi_platform_dev_driver);
691 } else
692 #endif
693 {
694 err = wifi_ctrlfunc_register_drv();
695
696 /* no wifi ctrl func either, load bus directly and ignore this error */
697 if (err) {
698 if (err == -ENXIO) {
699 /* wifi ctrl function does not exist */
700 err = dhd_wifi_platform_load();
701 } else {
702 /* unregister driver due to initialization failure */
703 wifi_ctrlfunc_unregister_drv();
704 }
705 }
706 }
707
708 return err;
709 }
710
711 #ifdef BCMPCIE
dhd_wifi_platform_load_pcie(void)712 static int dhd_wifi_platform_load_pcie(void)
713 {
714 int err = 0;
715 int i;
716 wifi_adapter_info_t *adapter;
717
718 BCM_REFERENCE(i);
719 BCM_REFERENCE(adapter);
720
721 if (dhd_wifi_platdata == NULL) {
722 err = dhd_bus_register();
723 } else {
724 if (dhd_download_fw_on_driverload) {
725 /* power up all adapters */
726 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
727 int retry = POWERUP_MAX_RETRY;
728 adapter = &dhd_wifi_platdata->adapters[i];
729
730 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
731 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
732 adapter->irq_num, adapter->intr_flags, adapter->fw_path,
733 adapter->nv_path));
734 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
735 adapter->bus_type, adapter->bus_num, adapter->slot_num));
736
737 do {
738 err = wifi_platform_set_power(adapter,
739 TRUE, WIFI_TURNON_DELAY);
740 if (err) {
741 DHD_ERROR(("failed to power up %s,"
742 " %d retry left\n",
743 adapter->name, retry));
744 /* WL_REG_ON state unknown, Power off forcely */
745 wifi_platform_set_power(adapter,
746 FALSE, WIFI_TURNOFF_DELAY);
747 continue;
748 } else {
749 err = wifi_platform_bus_enumerate(adapter, TRUE);
750 if (err) {
751 DHD_ERROR(("failed to enumerate bus %s, "
752 "%d retry left\n",
753 adapter->name, retry));
754 wifi_platform_set_power(adapter, FALSE,
755 WIFI_TURNOFF_DELAY);
756 } else {
757 break;
758 }
759 }
760 } while (retry--);
761
762 if (retry < 0) {
763 DHD_ERROR(("failed to power up %s, max retry reached**\n",
764 adapter->name));
765 return -ENODEV;
766 }
767 }
768 }
769
770 err = dhd_bus_register();
771
772 if (err) {
773 DHD_ERROR(("%s: pcie_register_driver failed\n", __FUNCTION__));
774 if (dhd_download_fw_on_driverload) {
775 /* power down all adapters */
776 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
777 adapter = &dhd_wifi_platdata->adapters[i];
778 wifi_platform_bus_enumerate(adapter, FALSE);
779 wifi_platform_set_power(adapter,
780 FALSE, WIFI_TURNOFF_DELAY);
781 }
782 }
783 }
784 }
785
786 return err;
787 }
788 #else
dhd_wifi_platform_load_pcie(void)789 static int dhd_wifi_platform_load_pcie(void)
790 {
791 return 0;
792 }
793 #endif /* BCMPCIE */
794
dhd_wifi_platform_unregister_drv(void)795 void dhd_wifi_platform_unregister_drv(void)
796 {
797 #ifndef CUSTOMER_HW
798 if (cfg_multichip)
799 platform_driver_unregister(&dhd_wifi_platform_dev_driver);
800 else
801 #endif
802 wifi_ctrlfunc_unregister_drv();
803 }
804
805 extern int dhd_watchdog_prio;
806 extern int dhd_dpc_prio;
807 extern uint dhd_deferred_tx;
808 #if defined(BCMLXSDMMC) || defined(BCMDBUS)
809 extern struct semaphore dhd_registration_sem;
810 #endif // endif
811
812 #ifdef BCMSDIO
dhd_wifi_platform_load_sdio(void)813 static int dhd_wifi_platform_load_sdio(void)
814 {
815 int i;
816 int err = 0;
817 wifi_adapter_info_t *adapter;
818
819 BCM_REFERENCE(i);
820 BCM_REFERENCE(adapter);
821
822 /* Sanity check on the module parameters
823 * - Both watchdog and DPC as tasklets are ok
824 * - If both watchdog and DPC are threads, TX must be deferred
825 */
826 if (!(dhd_watchdog_prio < 0 && dhd_dpc_prio < 0) &&
827 !(dhd_watchdog_prio >= 0 && dhd_dpc_prio >= 0 && dhd_deferred_tx))
828 return -EINVAL;
829
830 #if defined(BCMLXSDMMC) && !defined(DHD_PRELOAD)
831 sema_init(&dhd_registration_sem, 0);
832 #endif // endif
833
834 if (dhd_wifi_platdata == NULL) {
835 DHD_ERROR(("DHD wifi platform data is required for Android build\n"));
836 DHD_ERROR(("DHD registering bus directly\n"));
837 /* x86 bring-up PC needs no power-up operations */
838 err = dhd_bus_register();
839 return err;
840 }
841
842 #if defined(BCMLXSDMMC) && !defined(DHD_PRELOAD)
843 /* power up all adapters */
844 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
845 bool chip_up = FALSE;
846 int retry = POWERUP_MAX_RETRY;
847 struct semaphore dhd_chipup_sem;
848
849 adapter = &dhd_wifi_platdata->adapters[i];
850
851 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
852 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
853 adapter->irq_num, adapter->intr_flags, adapter->fw_path, adapter->nv_path));
854 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
855 adapter->bus_type, adapter->bus_num, adapter->slot_num));
856
857 do {
858 sema_init(&dhd_chipup_sem, 0);
859 err = dhd_bus_reg_sdio_notify(&dhd_chipup_sem);
860 if (err) {
861 DHD_ERROR(("%s dhd_bus_reg_sdio_notify fail(%d)\n\n",
862 __FUNCTION__, err));
863 return err;
864 }
865 err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY);
866 if (err) {
867 DHD_ERROR(("%s: wifi pwr on error ! \n", __FUNCTION__));
868 dhd_bus_unreg_sdio_notify();
869 /* WL_REG_ON state unknown, Power off forcely */
870 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
871 continue;
872 } else {
873 wifi_platform_bus_enumerate(adapter, TRUE);
874 }
875
876 if (down_timeout(&dhd_chipup_sem, msecs_to_jiffies(POWERUP_WAIT_MS)) == 0) {
877 dhd_bus_unreg_sdio_notify();
878 chip_up = TRUE;
879 break;
880 }
881
882 DHD_ERROR(("failed to power up %s, %d retry left\n", adapter->name, retry));
883 dhd_bus_unreg_sdio_notify();
884 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
885 wifi_platform_bus_enumerate(adapter, FALSE);
886 } while (retry--);
887
888 if (!chip_up) {
889 DHD_ERROR(("failed to power up %s, max retry reached**\n", adapter->name));
890 return -ENODEV;
891 }
892
893 }
894
895 err = dhd_bus_register();
896
897 if (err) {
898 DHD_ERROR(("%s: sdio_register_driver failed\n", __FUNCTION__));
899 goto fail;
900 }
901
902 /*
903 * Wait till MMC sdio_register_driver callback called and made driver attach.
904 * It's needed to make sync up exit from dhd insmod and
905 * Kernel MMC sdio device callback registration
906 */
907 err = down_timeout(&dhd_registration_sem, msecs_to_jiffies(DHD_REGISTRATION_TIMEOUT));
908 if (err) {
909 DHD_ERROR(("%s: sdio_register_driver timeout or error \n", __FUNCTION__));
910 dhd_bus_unregister();
911 goto fail;
912 }
913
914 return err;
915
916 fail:
917 /* power down all adapters */
918 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
919 adapter = &dhd_wifi_platdata->adapters[i];
920 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
921 wifi_platform_bus_enumerate(adapter, FALSE);
922 }
923 #else
924 /* x86 bring-up PC needs no power-up operations */
925 err = dhd_bus_register();
926 #endif // endif
927
928 return err;
929 }
930 #else /* BCMSDIO */
dhd_wifi_platform_load_sdio(void)931 static int dhd_wifi_platform_load_sdio(void)
932 {
933 return 0;
934 }
935 #endif /* BCMSDIO */
936
937 #ifdef BCMDBUS
dhd_wifi_platform_load_usb(void)938 static int dhd_wifi_platform_load_usb(void)
939 {
940 int err = 0;
941 #if !defined(DHD_PRELOAD)
942 wifi_adapter_info_t *adapter;
943 s32 timeout = -1;
944 int i;
945 enum wifi_adapter_status wait_status;
946 #endif
947
948 #if !defined(DHD_PRELOAD)
949 /* power down all adapters */
950 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
951 adapter = &dhd_wifi_platdata->adapters[i];
952 wifi_platform_set_power(adapter, FALSE, 0);
953 if (err) {
954 DHD_ERROR(("failed to wifi_platform_set_power on %s\n", adapter->name));
955 goto exit;
956 }
957 }
958 OSL_SLEEP(200);
959 #endif
960
961 err = dhd_bus_register();
962 if (err) {
963 DHD_ERROR(("%s: usb_register failed\n", __FUNCTION__));
964 goto exit;
965 }
966
967 #if !defined(DHD_PRELOAD)
968 /* power up all adapters */
969 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
970 adapter = &dhd_wifi_platdata->adapters[i];
971 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
972 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
973 adapter->irq_num, adapter->intr_flags, adapter->fw_path, adapter->nv_path));
974 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
975 adapter->bus_type, adapter->bus_num, adapter->slot_num));
976 err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY);
977 if (err) {
978 DHD_ERROR(("failed to wifi_platform_set_power on %s\n", adapter->name));
979 goto fail;
980 }
981 if (dhd_download_fw_on_driverload)
982 wait_status = WIFI_STATUS_ATTACH;
983 else
984 wait_status = WIFI_STATUS_DETTACH;
985 timeout = wait_event_interruptible_timeout(adapter->status_event,
986 wifi_get_adapter_status(adapter, wait_status),
987 msecs_to_jiffies(DHD_REGISTRATION_TIMEOUT));
988 if (timeout <= 0) {
989 err = -1;
990 DHD_ERROR(("%s: usb_register_driver timeout\n", __FUNCTION__));
991 goto fail;
992 }
993 }
994 #endif
995
996 exit:
997 return err;
998
999 #if !defined(DHD_PRELOAD)
1000 fail:
1001 dhd_bus_unregister();
1002 /* power down all adapters */
1003 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
1004 adapter = &dhd_wifi_platdata->adapters[i];
1005 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
1006 }
1007
1008 return err;
1009 #endif
1010 }
1011 #else /* BCMDBUS */
dhd_wifi_platform_load_usb(void)1012 static int dhd_wifi_platform_load_usb(void)
1013 {
1014 return 0;
1015 }
1016 #endif /* BCMDBUS */
1017
dhd_wifi_platform_load()1018 static int dhd_wifi_platform_load()
1019 {
1020 int err = 0;
1021 printf("%s: Enter\n", __FUNCTION__);
1022
1023 wl_android_init();
1024
1025 if ((err = dhd_wifi_platform_load_usb()))
1026 goto end;
1027 else if ((err = dhd_wifi_platform_load_sdio()))
1028 goto end;
1029 else
1030 err = dhd_wifi_platform_load_pcie();
1031
1032 end:
1033 if (err)
1034 wl_android_exit();
1035 #if !defined(MULTIPLE_SUPPLICANT)
1036 else
1037 wl_android_post_init();
1038 #endif
1039
1040 return err;
1041 }
1042