1 /*
2 * Linux platform device for DHD WLAN adapter
3 *
4 * Portions of this code are copyright (c) 2021 Cypress Semiconductor Corporation
5 *
6 * Copyright (C) 1999-2017, Broadcom Corporation
7 *
8 * Unless you and Broadcom execute a separate written software license
9 * agreement governing use of this software, this software is licensed to you
10 * under the terms of the GNU General Public License version 2 (the "GPL"),
11 * available at http://www.broadcom.com/licenses/GPLv2.php, with the
12 * following added to such license:
13 *
14 * As a special exception, the copyright holders of this software give you
15 * permission to link this software with independent modules, and to copy and
16 * distribute the resulting executable under terms of your choice, provided that
17 * you also meet, for each linked independent module, the terms and conditions of
18 * the license of that module. An independent module is a module which is not
19 * derived from this software. The special exception does not apply to any
20 * modifications of the software.
21 *
22 * Notwithstanding the above, under no circumstances may you combine this
23 * software in any way with any other Broadcom software provided under a license
24 * other than the GPL, without Broadcom's express prior written consent.
25 *
26 *
27 * <<Broadcom-WL-IPTag/Open:>>
28 *
29 * $Id: dhd_linux_platdev.c 697969 2017-05-05 16:36:11Z $
30 */
31 #include <typedefs.h>
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/platform_device.h>
36 #include <bcmutils.h>
37 #include <linux_osl.h>
38 #include <dhd_dbg.h>
39 #include <dngl_stats.h>
40 #include <dhd.h>
41 #include <dhd_bus.h>
42 #include <dhd_linux.h>
43 #if defined(OEM_ANDROID)
44 #include <wl_android.h>
45 #endif // endif
46 #if defined(CONFIG_WIFI_CONTROL_FUNC)
47 #include <linux/wlan_plat.h>
48 #endif // endif
49 #ifdef CONFIG_DTS
50 #include<linux/regulator/consumer.h>
51 #include<linux/of_gpio.h>
52 #endif /* CONFIG_DTS */
53 #define WIFI_PLAT_NAME "bcmdhd_wlan"
54 #define WIFI_PLAT_NAME2 "bcm4329_wlan"
55 #define WIFI_PLAT_EXT "bcmdhd_wifi_platform"
56
57 #ifdef USE_CUSTOM_MSM_PCIE
58 #include <linux/msm_pcie.h>
59 #endif /* USE_CUSTOM_MSM_PCIE */
60
61 #ifdef DHD_WIFI_SHUTDOWN
62 extern void wifi_plat_dev_drv_shutdown(struct platform_device *pdev);
63 #endif // endif
64
65 #ifdef CONFIG_DTS
66 struct regulator *wifi_regulator = NULL;
67 #endif /* CONFIG_DTS */
68
69 bool cfg_multichip = FALSE;
70 bcmdhd_wifi_platdata_t *dhd_wifi_platdata = NULL;
71 static int wifi_plat_dev_probe_ret = 0;
72 static bool is_power_on = FALSE;
73 #if !defined(CONFIG_DTS)
74 #if defined(DHD_OF_SUPPORT)
75 static bool dts_enabled = TRUE;
76 extern struct resource dhd_wlan_resources;
77 extern struct wifi_platform_data dhd_wlan_control;
78 #else
79 static bool dts_enabled = FALSE;
80 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
81 #pragma GCC diagnostic push
82 #pragma GCC diagnostic ignored "-Wmissing-field-initializers"
83 #endif // endif
84 struct resource dhd_wlan_resources = {0};
85 struct wifi_platform_data dhd_wlan_control = {0};
86 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
87 #pragma GCC diagnostic pop
88 #endif // endif
89 #endif /* CONFIG_OF && !defined(CONFIG_ARCH_MSM) */
90 #endif /* !defind(CONFIG_DTS) */
91
92 #ifdef DHD_CUSTOM_PLAT_DATA
93 extern int dhd_wlan_init_plat_data(void);
94 extern int dhd_wlan_deinit_plat_data(void);
95 #endif /* DHD_CUSTOM_PLAT_DATA */
96
97 static int dhd_wifi_platform_load(void);
98
99 extern void* wl_cfg80211_get_dhdp(struct net_device *dev);
100
101 #if defined(BOARD_HIKEY) || defined(USE_CUSTOM_MSM_PCIE)
102 extern int dhd_wlan_init(void);
103 extern int dhd_wlan_deinit(void);
104 extern void post_power_operation(int on);
105 #endif /* defined(BOARD_HIKEY) || defined(USE_CUSTOM_MSM_PCIE) */
106
107 #ifdef ENABLE_4335BT_WAR
108 extern int bcm_bt_lock(int cookie);
109 extern void bcm_bt_unlock(int cookie);
110 static int lock_cookie_wifi = 'W' | 'i'<<8 | 'F'<<16 | 'i'<<24; /* cookie is "WiFi" */
111 #endif /* ENABLE_4335BT_WAR */
112
dhd_wifi_platform_get_adapter(uint32 bus_type,uint32 bus_num,uint32 slot_num)113 wifi_adapter_info_t* dhd_wifi_platform_get_adapter(uint32 bus_type, uint32 bus_num, uint32 slot_num)
114 {
115 int i;
116
117 if (dhd_wifi_platdata == NULL)
118 return NULL;
119
120 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
121 wifi_adapter_info_t *adapter = &dhd_wifi_platdata->adapters[i];
122 if ((adapter->bus_type == -1 || adapter->bus_type == bus_type) &&
123 (adapter->bus_num == -1 || adapter->bus_num == bus_num) &&
124 (adapter->slot_num == -1 || adapter->slot_num == slot_num)) {
125 DHD_TRACE(("found adapter info '%s'\n", adapter->name));
126 return adapter;
127 }
128 }
129 return NULL;
130 }
131
wifi_platform_prealloc(wifi_adapter_info_t * adapter,int section,unsigned long size)132 void* wifi_platform_prealloc(wifi_adapter_info_t *adapter, int section, unsigned long size)
133 {
134 void *alloc_ptr = NULL;
135 struct wifi_platform_data *plat_data;
136
137 if (!adapter || !adapter->wifi_plat_data)
138 return NULL;
139 plat_data = adapter->wifi_plat_data;
140 if (plat_data->mem_prealloc) {
141 alloc_ptr = plat_data->mem_prealloc(section, size);
142 if (alloc_ptr) {
143 DHD_INFO(("success alloc section %d\n", section));
144 if (size != 0L)
145 bzero(alloc_ptr, size);
146 return alloc_ptr;
147 }
148 }
149
150 DHD_ERROR(("%s: failed to alloc static mem section %d\n", __FUNCTION__, section));
151 return NULL;
152 }
153
wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t * adapter)154 void* wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t *adapter)
155 {
156 struct wifi_platform_data *plat_data;
157
158 if (!adapter || !adapter->wifi_plat_data)
159 return NULL;
160 plat_data = adapter->wifi_plat_data;
161 return plat_data->mem_prealloc;
162 }
163
wifi_platform_get_irq_number(wifi_adapter_info_t * adapter,unsigned long * irq_flags_ptr)164 int wifi_platform_get_irq_number(wifi_adapter_info_t *adapter, unsigned long *irq_flags_ptr)
165 {
166 if (adapter == NULL)
167 return -1;
168 if (irq_flags_ptr)
169 *irq_flags_ptr = adapter->intr_flags;
170 return adapter->irq_num;
171 }
172
wifi_platform_set_power(wifi_adapter_info_t * adapter,bool on,unsigned long msec)173 int wifi_platform_set_power(wifi_adapter_info_t *adapter, bool on, unsigned long msec)
174 {
175 int err = 0;
176 #ifdef CONFIG_DTS
177 if (on) {
178 err = regulator_enable(wifi_regulator);
179 is_power_on = TRUE;
180 }
181 else {
182 err = regulator_disable(wifi_regulator);
183 is_power_on = FALSE;
184 }
185 if (err < 0)
186 DHD_ERROR(("%s: regulator enable/disable failed", __FUNCTION__));
187 #else
188 struct wifi_platform_data *plat_data;
189
190 if (!adapter || !adapter->wifi_plat_data)
191 return -EINVAL;
192
193 plat_data = adapter->wifi_plat_data;
194
195 DHD_ERROR(("%s = %d, delay: %lu msec\n", __FUNCTION__, on, msec));
196 if (plat_data->set_power) {
197 #ifdef ENABLE_4335BT_WAR
198 if (on) {
199 printk("WiFi: trying to acquire BT lock\n");
200 if (bcm_bt_lock(lock_cookie_wifi) != 0)
201 printk("** WiFi: timeout in acquiring bt lock**\n");
202 printk("%s: btlock acquired\n", __FUNCTION__);
203 }
204 else {
205 /* For a exceptional case, release btlock */
206 bcm_bt_unlock(lock_cookie_wifi);
207 }
208 #endif /* ENABLE_4335BT_WAR */
209
210 err = plat_data->set_power(on);
211 }
212
213 if (msec && !err)
214 OSL_SLEEP(msec);
215
216 if (on && !err) {
217 is_power_on = TRUE;
218 #ifdef USE_CUSTOM_POST_PWR_OPER
219 post_power_operation(on);
220 #endif /* USE_CUSTOM_MSM_PCIE */
221 } else {
222 is_power_on = FALSE;
223 }
224
225 #endif /* CONFIG_DTS */
226
227 return err;
228 }
229
230 #if defined(PLATFORM_IMX)
231 extern void wifi_card_detect(bool);
wifi_platform_bus_enumerate(wifi_adapter_info_t * adapter,bool device_present)232 int wifi_platform_bus_enumerate(wifi_adapter_info_t *adapter, bool device_present)
233 {
234 int err = 0;
235 struct wifi_platform_data *plat_data;
236
237 if (!adapter) {
238 pr_err("!!!! %s: failed! adapter variable is NULL!!!!!\n", __FUNCTION__);
239 return -EINVAL;
240 }
241
242 DHD_ERROR(("%s device present %d\n", __FUNCTION__, device_present));
243
244 if (!adapter->wifi_plat_data) {
245 wifi_card_detect(device_present); /* hook for card_detect */
246 } else {
247 plat_data = adapter->wifi_plat_data;
248 if (plat_data->set_carddetect)
249 err = plat_data->set_carddetect(device_present);
250 }
251
252 return 0; /* force success status returned */
253 }
254 #else
wifi_platform_bus_enumerate(wifi_adapter_info_t * adapter,bool device_present)255 int wifi_platform_bus_enumerate(wifi_adapter_info_t *adapter, bool device_present)
256 {
257 int err = 0;
258 struct wifi_platform_data *plat_data;
259
260 #ifdef CONFIG_DTS
261 if (wifi_regulator)
262 return err;
263 #endif /* CONFIG_DTS */
264
265 if (!adapter || !adapter->wifi_plat_data)
266 return -EINVAL;
267 plat_data = adapter->wifi_plat_data;
268
269 DHD_ERROR(("%s device present %d\n", __FUNCTION__, device_present));
270 if (plat_data->set_carddetect) {
271 err = plat_data->set_carddetect(device_present);
272 }
273 return err;
274
275 }
276 #endif /* PLATFORM_IMX */
277
wifi_platform_get_mac_addr(wifi_adapter_info_t * adapter,unsigned char * buf)278 int wifi_platform_get_mac_addr(wifi_adapter_info_t *adapter, unsigned char *buf)
279 {
280 struct wifi_platform_data *plat_data;
281
282 DHD_ERROR(("%s\n", __FUNCTION__));
283 if (!buf || !adapter || !adapter->wifi_plat_data)
284 return -EINVAL;
285 plat_data = adapter->wifi_plat_data;
286 if (plat_data->get_mac_addr) {
287 return plat_data->get_mac_addr(buf);
288 }
289 return -EOPNOTSUPP;
290 }
291 #ifdef CUSTOM_COUNTRY_CODE
wifi_platform_get_country_code(wifi_adapter_info_t * adapter,char * ccode,u32 flags)292 void *wifi_platform_get_country_code(wifi_adapter_info_t *adapter, char *ccode, u32 flags)
293 #else
294 void *wifi_platform_get_country_code(wifi_adapter_info_t *adapter, char *ccode)
295 #endif /* CUSTOM_COUNTRY_CODE */
296 {
297 /* get_country_code was added after 2.6.39 */
298 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
299 struct wifi_platform_data *plat_data;
300
301 if (!ccode || !adapter || !adapter->wifi_plat_data)
302 return NULL;
303 plat_data = adapter->wifi_plat_data;
304
305 DHD_TRACE(("%s\n", __FUNCTION__));
306 if (plat_data->get_country_code) {
307 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 58))
308 return plat_data->get_country_code(ccode, WLAN_PLAT_NODFS_FLAG);
309 #else
310 #ifdef CUSTOM_COUNTRY_CODE
311 return plat_data->get_country_code(ccode, flags);
312 #else
313 return plat_data->get_country_code(ccode);
314 #endif /* CUSTOM_COUNTRY_CODE */
315 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 58)) */
316 }
317 #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) */
318
319 return NULL;
320 }
321
wifi_plat_dev_drv_probe(struct platform_device * pdev)322 static int wifi_plat_dev_drv_probe(struct platform_device *pdev)
323 {
324 struct resource *resource;
325 wifi_adapter_info_t *adapter;
326 #ifdef CONFIG_DTS
327 int irq, gpio;
328 #endif /* CONFIG_DTS */
329
330 /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan")
331 * is kept for backward compatibility and supports only 1 adapter
332 */
333 ASSERT(dhd_wifi_platdata != NULL);
334 ASSERT(dhd_wifi_platdata->num_adapters == 1);
335 adapter = &dhd_wifi_platdata->adapters[0];
336 adapter->wifi_plat_data = (struct wifi_platform_data *)(pdev->dev.platform_data);
337
338 resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcmdhd_wlan_irq");
339 if (resource == NULL)
340 resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcm4329_wlan_irq");
341 if (resource) {
342 adapter->irq_num = resource->start;
343 adapter->intr_flags = resource->flags & IRQF_TRIGGER_MASK;
344 #ifdef DHD_ISR_NO_SUSPEND
345 adapter->intr_flags |= IRQF_NO_SUSPEND;
346 #endif // endif
347 }
348
349 #ifdef CONFIG_DTS
350 wifi_regulator = regulator_get(&pdev->dev, "wlreg_on");
351 if (wifi_regulator == NULL) {
352 DHD_ERROR(("%s regulator is null\n", __FUNCTION__));
353 return -1;
354 }
355
356 #if defined(OOB_INTR_ONLY) || defined(BCMPCIE_OOB_HOST_WAKE)
357 /* This is to get the irq for the OOB */
358 gpio = of_get_gpio(pdev->dev.of_node, 0);
359
360 if (gpio < 0) {
361 DHD_ERROR(("%s OOB GPIO information is incorrect Or Not available\n",
362 __FUNCTION__));
363 goto end;
364 }
365 irq = gpio_to_irq(gpio);
366 if (irq < 0) {
367 DHD_ERROR(("%s irq information is incorrect\n", __FUNCTION__));
368 return -1;
369 }
370 adapter->irq_num = irq;
371
372 /* need to change the flags according to our requirement */
373 adapter->intr_flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL |
374 IORESOURCE_IRQ_SHAREABLE;
375 end:
376 #endif /* defined(OOB_INTR_ONLY) || defined(BCMPCIE_OOB_HOST_WAKE) */
377 #endif /* CONFIG_DTS */
378
379 wifi_plat_dev_probe_ret = dhd_wifi_platform_load();
380 return wifi_plat_dev_probe_ret;
381 }
382
wifi_plat_dev_drv_remove(struct platform_device * pdev)383 static int wifi_plat_dev_drv_remove(struct platform_device *pdev)
384 {
385 wifi_adapter_info_t *adapter;
386
387 /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan")
388 * is kept for backward compatibility and supports only 1 adapter
389 */
390 ASSERT(dhd_wifi_platdata != NULL);
391 ASSERT(dhd_wifi_platdata->num_adapters == 1);
392 adapter = &dhd_wifi_platdata->adapters[0];
393 if (is_power_on) {
394 #ifdef BCMPCIE
395 wifi_platform_bus_enumerate(adapter, FALSE);
396 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
397 #else
398 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
399 wifi_platform_bus_enumerate(adapter, FALSE);
400 #endif /* BCMPCIE */
401 }
402
403 #ifdef CONFIG_DTS
404 regulator_put(wifi_regulator);
405 #endif /* CONFIG_DTS */
406 return 0;
407 }
408
wifi_plat_dev_drv_suspend(struct platform_device * pdev,pm_message_t state)409 static int wifi_plat_dev_drv_suspend(struct platform_device *pdev, pm_message_t state)
410 {
411 DHD_TRACE(("##> %s\n", __FUNCTION__));
412 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) && \
413 defined(BCMSDIO)
414 bcmsdh_oob_intr_set(0);
415 #endif /* (OOB_INTR_ONLY) */
416 return 0;
417 }
418
wifi_plat_dev_drv_resume(struct platform_device * pdev)419 static int wifi_plat_dev_drv_resume(struct platform_device *pdev)
420 {
421 DHD_TRACE(("##> %s\n", __FUNCTION__));
422 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) && \
423 defined(BCMSDIO)
424 if (dhd_os_check_if_up(wl_cfg80211_get_dhdp()))
425 bcmsdh_oob_intr_set(1);
426 #endif /* (OOB_INTR_ONLY) */
427 return 0;
428 }
429
430 #ifdef CONFIG_DTS
431 static const struct of_device_id wifi_device_dt_match[] = {
432 { .compatible = "android,bcmdhd_wlan", },
433 {},
434 };
435 #endif /* CONFIG_DTS */
436 static struct platform_driver wifi_platform_dev_driver = {
437 .probe = wifi_plat_dev_drv_probe,
438 .remove = wifi_plat_dev_drv_remove,
439 .suspend = wifi_plat_dev_drv_suspend,
440 .resume = wifi_plat_dev_drv_resume,
441 #ifdef DHD_WIFI_SHUTDOWN
442 .shutdown = wifi_plat_dev_drv_shutdown,
443 #endif // endif
444 .driver = {
445 .name = WIFI_PLAT_NAME,
446 #ifdef CONFIG_DTS
447 .of_match_table = wifi_device_dt_match,
448 #endif /* CONFIG_DTS */
449 }
450 };
451
452 static struct platform_driver wifi_platform_dev_driver_legacy = {
453 .probe = wifi_plat_dev_drv_probe,
454 .remove = wifi_plat_dev_drv_remove,
455 .suspend = wifi_plat_dev_drv_suspend,
456 .resume = wifi_plat_dev_drv_resume,
457 #ifdef DHD_WIFI_SHUTDOWN
458 .shutdown = wifi_plat_dev_drv_shutdown,
459 #endif // endif
460 .driver = {
461 .name = WIFI_PLAT_NAME2,
462 }
463 };
464 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 3, 0))
wifi_platdev_match(struct device * dev,const void * data)465 static int wifi_platdev_match(struct device *dev, const void *data)
466 #else
467 static int wifi_platdev_match(struct device *dev, void *data)
468 #endif /* LINUX_VERSION_CODE */
469 {
470 const char *name = (const char*)data;
471 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
472 #pragma GCC diagnostic push
473 #pragma GCC diagnostic ignored "-Wcast-qual"
474 #endif // endif
475 const struct platform_device *pdev = to_platform_device(dev);
476 #if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
477 #pragma GCC diagnostic pop
478 #endif // endif
479
480 if (strcmp(pdev->name, name) == 0) {
481 DHD_ERROR(("found wifi platform device %s\n", name));
482 return TRUE;
483 }
484
485 return FALSE;
486 }
487
wifi_ctrlfunc_register_drv(void)488 static int wifi_ctrlfunc_register_drv(void)
489 {
490 int err = 0;
491 struct device *dev1, *dev2;
492 wifi_adapter_info_t *adapter;
493
494 dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
495 dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
496
497 #if defined(BOARD_HIKEY_MODULAR) || defined(USE_CUSTOM_MSM_PCIE)
498 dhd_wlan_init();
499 #endif /* defined(BOARD_HIKEY_MODULAR) || defined(USE_CUSTOM_MSM_PCIE) */
500
501 #if !defined(CONFIG_DTS)
502 if (!dts_enabled) {
503 if (dev1 == NULL && dev2 == NULL) {
504 DHD_ERROR(("no wifi platform data, skip\n"));
505 return -ENXIO;
506 }
507 }
508 #endif /* !defined(CONFIG_DTS) */
509
510 /* multi-chip support not enabled, build one adapter information for
511 * DHD (either SDIO, USB or PCIe)
512 */
513 adapter = kzalloc(sizeof(wifi_adapter_info_t), GFP_KERNEL);
514 if (adapter == NULL) {
515 DHD_ERROR(("%s:adapter alloc failed", __FUNCTION__));
516 return ENOMEM;
517 }
518 adapter->name = "DHD generic adapter";
519 adapter->bus_type = -1;
520 adapter->bus_num = -1;
521 adapter->slot_num = -1;
522 adapter->irq_num = -1;
523 is_power_on = FALSE;
524 wifi_plat_dev_probe_ret = 0;
525 dhd_wifi_platdata = kzalloc(sizeof(bcmdhd_wifi_platdata_t), GFP_KERNEL);
526 dhd_wifi_platdata->num_adapters = 1;
527 dhd_wifi_platdata->adapters = adapter;
528
529 if (dev1) {
530 err = platform_driver_register(&wifi_platform_dev_driver);
531 if (err) {
532 DHD_ERROR(("%s: failed to register wifi ctrl func driver\n",
533 __FUNCTION__));
534 return err;
535 }
536 }
537 if (dev2) {
538 err = platform_driver_register(&wifi_platform_dev_driver_legacy);
539 if (err) {
540 DHD_ERROR(("%s: failed to register wifi ctrl func legacy driver\n",
541 __FUNCTION__));
542 return err;
543 }
544 }
545 #if !defined(CONFIG_DTS)
546 if (dts_enabled) {
547 struct resource *resource;
548 #ifdef DHD_CUSTOM_PLAT_DATA
549 wifi_plat_dev_probe_ret = dhd_wlan_init_plat_data();
550 if (wifi_plat_dev_probe_ret) {
551 return wifi_plat_dev_probe_ret;
552 }
553 #endif /* DHD_CUSTOM_PLAT_DATA */
554 adapter->wifi_plat_data = (void *)&dhd_wlan_control;
555 resource = &dhd_wlan_resources;
556 adapter->irq_num = resource->start;
557 adapter->intr_flags = resource->flags & IRQF_TRIGGER_MASK;
558 #ifdef DHD_ISR_NO_SUSPEND
559 adapter->intr_flags |= IRQF_NO_SUSPEND;
560 #endif // endif
561 wifi_plat_dev_probe_ret = dhd_wifi_platform_load();
562 }
563 #endif /* !defined(CONFIG_DTS) */
564
565 #ifdef CONFIG_DTS
566 wifi_plat_dev_probe_ret = platform_driver_register(&wifi_platform_dev_driver);
567 #endif /* CONFIG_DTS */
568
569 /* return probe function's return value if registeration succeeded */
570 return wifi_plat_dev_probe_ret;
571 }
572
wifi_ctrlfunc_unregister_drv(void)573 void wifi_ctrlfunc_unregister_drv(void)
574 {
575
576 #ifdef CONFIG_DTS
577 DHD_ERROR(("unregister wifi platform drivers\n"));
578 platform_driver_unregister(&wifi_platform_dev_driver);
579 #else
580 struct device *dev1, *dev2;
581 dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match);
582 dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match);
583 if (!dts_enabled)
584 if (dev1 == NULL && dev2 == NULL)
585 return;
586
587 DHD_ERROR(("unregister wifi platform drivers\n"));
588
589 if (dev1)
590 platform_driver_unregister(&wifi_platform_dev_driver);
591 if (dev2)
592 platform_driver_unregister(&wifi_platform_dev_driver_legacy);
593 if (dts_enabled) {
594 wifi_adapter_info_t *adapter;
595 adapter = &dhd_wifi_platdata->adapters[0];
596 if (is_power_on) {
597 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
598 wifi_platform_bus_enumerate(adapter, FALSE);
599 }
600 }
601 #ifdef BOARD_HIKEY_MODULAR
602 dhd_wlan_deinit();
603 #endif /* BOARD_HIKEY_MODULAR */
604
605 #ifdef DHD_CUSTOM_PLAT_DATA
606 dhd_wlan_deinit_plat_data();
607 #endif /* DHD_CUSTOM_PLAT_DATA */
608 #endif /* !defined(CONFIG_DTS) */
609
610 kfree(dhd_wifi_platdata->adapters);
611 dhd_wifi_platdata->adapters = NULL;
612 dhd_wifi_platdata->num_adapters = 0;
613 kfree(dhd_wifi_platdata);
614 dhd_wifi_platdata = NULL;
615 }
616
bcmdhd_wifi_plat_dev_drv_probe(struct platform_device * pdev)617 static int bcmdhd_wifi_plat_dev_drv_probe(struct platform_device *pdev)
618 {
619 dhd_wifi_platdata = (bcmdhd_wifi_platdata_t *)(pdev->dev.platform_data);
620
621 return dhd_wifi_platform_load();
622 }
623
bcmdhd_wifi_plat_dev_drv_remove(struct platform_device * pdev)624 static int bcmdhd_wifi_plat_dev_drv_remove(struct platform_device *pdev)
625 {
626 int i;
627 wifi_adapter_info_t *adapter;
628 ASSERT(dhd_wifi_platdata != NULL);
629
630 /* power down all adapters */
631 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
632 adapter = &dhd_wifi_platdata->adapters[i];
633 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
634 wifi_platform_bus_enumerate(adapter, FALSE);
635 }
636 return 0;
637 }
638
639 static struct platform_driver dhd_wifi_platform_dev_driver = {
640 .probe = bcmdhd_wifi_plat_dev_drv_probe,
641 .remove = bcmdhd_wifi_plat_dev_drv_remove,
642 .driver = {
643 .name = WIFI_PLAT_EXT,
644 }
645 };
646
dhd_wifi_platform_register_drv(void)647 int dhd_wifi_platform_register_drv(void)
648 {
649 int err = 0;
650 struct device *dev;
651
652 /* register Broadcom wifi platform data driver if multi-chip is enabled,
653 * otherwise use Android style wifi platform data (aka wifi control function)
654 * if it exists
655 *
656 * to support multi-chip DHD, Broadcom wifi platform data device must
657 * be added in kernel early boot (e.g. board config file).
658 */
659 if (cfg_multichip) {
660 dev = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_EXT, wifi_platdev_match);
661 if (dev == NULL) {
662 DHD_ERROR(("bcmdhd wifi platform data device not found!!\n"));
663 return -ENXIO;
664 }
665 err = platform_driver_register(&dhd_wifi_platform_dev_driver);
666 } else {
667 err = wifi_ctrlfunc_register_drv();
668
669 /* no wifi ctrl func either, load bus directly and ignore this error */
670 if (err) {
671 if (err == -ENXIO) {
672 /* wifi ctrl function does not exist */
673 err = dhd_wifi_platform_load();
674 } else {
675 /* unregister driver due to initialization failure */
676 wifi_ctrlfunc_unregister_drv();
677 }
678 }
679 }
680
681 return err;
682 }
683
684 #ifdef BCMPCIE
dhd_wifi_platform_load_pcie(void)685 static int dhd_wifi_platform_load_pcie(void)
686 {
687 int err = 0;
688 int i;
689 wifi_adapter_info_t *adapter;
690
691 BCM_REFERENCE(i);
692 BCM_REFERENCE(adapter);
693
694 if (dhd_wifi_platdata == NULL) {
695 err = dhd_bus_register();
696 } else {
697 if (dhd_download_fw_on_driverload) {
698 /* power up all adapters */
699 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
700 int retry = POWERUP_MAX_RETRY;
701 adapter = &dhd_wifi_platdata->adapters[i];
702
703 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
704 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
705 adapter->irq_num, adapter->intr_flags, adapter->fw_path,
706 adapter->nv_path));
707 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
708 adapter->bus_type, adapter->bus_num, adapter->slot_num));
709
710 do {
711 err = wifi_platform_set_power(adapter,
712 TRUE, WIFI_TURNON_DELAY);
713 if (err) {
714 DHD_ERROR(("failed to power up %s,"
715 " %d retry left\n",
716 adapter->name, retry));
717 /* WL_REG_ON state unknown, Power off forcely */
718 wifi_platform_set_power(adapter,
719 FALSE, WIFI_TURNOFF_DELAY);
720 continue;
721 } else {
722 err = wifi_platform_bus_enumerate(adapter, TRUE);
723 if (err) {
724 DHD_ERROR(("failed to enumerate bus %s, "
725 "%d retry left\n",
726 adapter->name, retry));
727 wifi_platform_set_power(adapter, FALSE,
728 WIFI_TURNOFF_DELAY);
729 } else {
730 break;
731 }
732 }
733 } while (retry--);
734
735 if (retry < 0) {
736 DHD_ERROR(("failed to power up %s, max retry reached**\n",
737 adapter->name));
738 return -ENODEV;
739 }
740 }
741 }
742
743 err = dhd_bus_register();
744
745 if (err) {
746 DHD_ERROR(("%s: pcie_register_driver failed\n", __FUNCTION__));
747 if (dhd_download_fw_on_driverload) {
748 /* power down all adapters */
749 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
750 adapter = &dhd_wifi_platdata->adapters[i];
751 wifi_platform_bus_enumerate(adapter, FALSE);
752 wifi_platform_set_power(adapter,
753 FALSE, WIFI_TURNOFF_DELAY);
754 }
755 }
756 }
757 }
758
759 return err;
760 }
761 #else
dhd_wifi_platform_load_pcie(void)762 static int dhd_wifi_platform_load_pcie(void)
763 {
764 return 0;
765 }
766 #endif /* BCMPCIE */
767
dhd_wifi_platform_unregister_drv(void)768 void dhd_wifi_platform_unregister_drv(void)
769 {
770 if (cfg_multichip)
771 platform_driver_unregister(&dhd_wifi_platform_dev_driver);
772 else
773 wifi_ctrlfunc_unregister_drv();
774 }
775
776 extern int dhd_watchdog_prio;
777 extern int dhd_dpc_prio;
778 extern uint dhd_deferred_tx;
779 #if defined(OEM_ANDROID) && defined(BCMLXSDMMC)
780 extern struct semaphore dhd_registration_sem;
781 #endif /* defined(OEM_ANDROID) && defined(BCMLXSDMMC) */
782
783 #ifdef BCMSDIO
dhd_wifi_platform_load_sdio(void)784 static int dhd_wifi_platform_load_sdio(void)
785 {
786 int i;
787 int err = 0;
788 wifi_adapter_info_t *adapter;
789
790 BCM_REFERENCE(i);
791 BCM_REFERENCE(adapter);
792
793 /* Sanity check on the module parameters
794 * - Both watchdog and DPC as tasklets are ok
795 * - If both watchdog and DPC are threads, TX must be deferred
796 */
797 if (!(dhd_watchdog_prio < 0 && dhd_dpc_prio < 0) &&
798 !(dhd_watchdog_prio >= 0 && dhd_dpc_prio >= 0 && dhd_deferred_tx))
799 return -EINVAL;
800
801 #if defined(OEM_ANDROID) && defined(BCMLXSDMMC)
802 sema_init(&dhd_registration_sem, 0);
803 #endif // endif
804
805 if (dhd_wifi_platdata == NULL) {
806 DHD_ERROR(("DHD wifi platform data is required for Android build\n"));
807 DHD_ERROR(("DHD registering bus directly\n"));
808 /* x86 bring-up PC needs no power-up operations */
809 err = dhd_bus_register();
810 return err;
811 }
812
813 #if defined(OEM_ANDROID) && defined(BCMLXSDMMC)
814 /* power up all adapters */
815 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
816 bool chip_up = FALSE;
817 int retry = POWERUP_MAX_RETRY;
818 struct semaphore dhd_chipup_sem;
819
820 adapter = &dhd_wifi_platdata->adapters[i];
821
822 DHD_ERROR(("Power-up adapter '%s'\n", adapter->name));
823 DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n",
824 adapter->irq_num, adapter->intr_flags, adapter->fw_path, adapter->nv_path));
825 DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n",
826 adapter->bus_type, adapter->bus_num, adapter->slot_num));
827
828 do {
829 sema_init(&dhd_chipup_sem, 0);
830 err = dhd_bus_reg_sdio_notify(&dhd_chipup_sem);
831 if (err) {
832 DHD_ERROR(("%s dhd_bus_reg_sdio_notify fail(%d)\n\n",
833 __FUNCTION__, err));
834 return err;
835 }
836 err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY);
837 if (err) {
838 DHD_ERROR(("%s: wifi pwr on error ! \n", __FUNCTION__));
839 dhd_bus_unreg_sdio_notify();
840 /* WL_REG_ON state unknown, Power off forcely */
841 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
842 continue;
843 } else {
844 wifi_platform_bus_enumerate(adapter, TRUE);
845 }
846
847 if (down_timeout(&dhd_chipup_sem, msecs_to_jiffies(POWERUP_WAIT_MS)) == 0) {
848 dhd_bus_unreg_sdio_notify();
849 chip_up = TRUE;
850 break;
851 }
852
853 DHD_ERROR(("failed to power up %s, %d retry left\n", adapter->name, retry));
854 dhd_bus_unreg_sdio_notify();
855 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
856 wifi_platform_bus_enumerate(adapter, FALSE);
857 } while (retry--);
858
859 if (!chip_up) {
860 DHD_ERROR(("failed to power up %s, max retry reached**\n", adapter->name));
861 return -ENODEV;
862 }
863
864 }
865
866 err = dhd_bus_register();
867
868 if (err) {
869 DHD_ERROR(("%s: sdio_register_driver failed\n", __FUNCTION__));
870 goto fail;
871 }
872
873 /*
874 * Wait till MMC sdio_register_driver callback called and made driver attach.
875 * It's needed to make sync up exit from dhd insmod and
876 * Kernel MMC sdio device callback registration
877 */
878 err = down_timeout(&dhd_registration_sem, msecs_to_jiffies(DHD_REGISTRATION_TIMEOUT));
879 if (err) {
880 DHD_ERROR(("%s: sdio_register_driver timeout or error \n", __FUNCTION__));
881 dhd_bus_unregister();
882 goto fail;
883 }
884
885 return err;
886
887 fail:
888 /* power down all adapters */
889 for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) {
890 adapter = &dhd_wifi_platdata->adapters[i];
891 wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY);
892 wifi_platform_bus_enumerate(adapter, FALSE);
893 }
894 #endif /* defined(OEM_ANDROID) && defined(BCMLXSDMMC) */
895
896 return err;
897 }
898 #else /* BCMSDIO */
dhd_wifi_platform_load_sdio(void)899 static int dhd_wifi_platform_load_sdio(void)
900 {
901 return 0;
902 }
903 #endif /* BCMSDIO */
904
dhd_wifi_platform_load_usb(void)905 static int dhd_wifi_platform_load_usb(void)
906 {
907 return 0;
908 }
909
dhd_wifi_platform_load()910 static int dhd_wifi_platform_load()
911 {
912 int err = 0;
913
914 #if defined(OEM_ANDROID)
915 wl_android_init();
916 #endif /* OEM_ANDROID */
917
918 if ((err = dhd_wifi_platform_load_usb()))
919 goto end;
920 else if ((err = dhd_wifi_platform_load_sdio()))
921 goto end;
922 else
923 err = dhd_wifi_platform_load_pcie();
924
925 end:
926 #if defined(OEM_ANDROID)
927 if (err)
928 wl_android_exit();
929 else
930 wl_android_post_init();
931 #endif /* OEM_ANDROID */
932
933 return err;
934 }
935