1 /*
2 * Copyright (C) 2012 ROCKCHIP, Inc.
3 *
4 * This software is licensed under the terms of the GNU General Public
5 * License version 2, as published by the Free Software Foundation, and
6 * may be copied, distributed, and modified under those terms.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 */
14 /* Rock-chips rfkill driver for wifi
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/platform_device.h>
19 #include <linux/module.h>
20 #include <linux/rfkill.h>
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/regulator/consumer.h>
24 #include <linux/delay.h>
25 #include <linux/rfkill-wlan.h>
26 #include <linux/rfkill-bt.h>
27 #include <linux/wakelock.h>
28 #include <linux/interrupt.h>
29 #include <asm/irq.h>
30 #include <linux/suspend.h>
31 #include <linux/proc_fs.h>
32 #include <linux/uaccess.h>
33 #include <linux/gpio.h>
34 #include <dt-bindings/gpio/gpio.h>
35 #include <linux/skbuff.h>
36 #include <linux/fb.h>
37 #include <linux/rockchip/grf.h>
38 #include <linux/regmap.h>
39 #include <linux/mfd/syscon.h>
40 #include <linux/mmc/host.h>
41 #ifdef CONFIG_OF
42 #include <linux/of.h>
43 #include <linux/of_device.h>
44 #include <linux/of_gpio.h>
45 #endif
46 #include <linux/soc/rockchip/rk_vendor_storage.h>
47 #include <linux/device.h>
48
49 #include "../../drivers/mmc/core/pwrseq.h"
50
51 #if 0
52 #define DBG(x...) pr_info("[WLAN_RFKILL]: " x)
53 #else
54 #define DBG(x...)
55 #endif
56
57 #define LOG(x...) pr_info("[WLAN_RFKILL]: " x)
58
59 struct rfkill_wlan_data {
60 struct rksdmmc_gpio_wifi_moudle *pdata;
61 struct wake_lock wlan_irq_wl;
62 };
63
64 static struct rfkill_wlan_data *g_rfkill = NULL;
65 static int power_set_time = 0;
66 static int wifi_bt_vbat_state;
67 static int wifi_power_state;
68
69 static const char wlan_name[] = "rkwifi";
70
71 static char wifi_chip_type_string[64];
72 /***********************************************************
73 *
74 * Broadcom Wifi Static Memory
75 *
76 **********************************************************/
77 #ifdef CONFIG_RKWIFI
78 #define BCM_STATIC_MEMORY_SUPPORT 0
79 #else
80 #define BCM_STATIC_MEMORY_SUPPORT 0
81 #endif
82 //===========================
83 #if BCM_STATIC_MEMORY_SUPPORT
84 #define PREALLOC_WLAN_SEC_NUM 4
85 #define PREALLOC_WLAN_BUF_NUM 160
86 #define PREALLOC_WLAN_SECTION_HEADER 0
87 #define WLAN_SKB_BUF_NUM 16
88
89 #define WLAN_SECTION_SIZE_0 (12 * 1024)
90 #define WLAN_SECTION_SIZE_1 (12 * 1024)
91 #define WLAN_SECTION_SIZE_2 (32 * 1024)
92 #define WLAN_SECTION_SIZE_3 (136 * 1024)
93 #define WLAN_SECTION_SIZE_4 (4 * 1024)
94 #define WLAN_SECTION_SIZE_5 (64 * 1024)
95 #define WLAN_SECTION_SIZE_6 (4 * 1024)
96 #define WLAN_SECTION_SIZE_7 (4 * 1024)
97
98 static struct sk_buff *wlan_static_skb[WLAN_SKB_BUF_NUM + 1];
99
100 struct wifi_mem_prealloc {
101 void *mem_ptr;
102 unsigned long size;
103 };
104
105 static struct wifi_mem_prealloc wifi_mem_array[8] = {
106 { NULL, (WLAN_SECTION_SIZE_0) }, { NULL, (WLAN_SECTION_SIZE_1) },
107 { NULL, (WLAN_SECTION_SIZE_2) }, { NULL, (WLAN_SECTION_SIZE_3) },
108 { NULL, (WLAN_SECTION_SIZE_4) }, { NULL, (WLAN_SECTION_SIZE_5) },
109 { NULL, (WLAN_SECTION_SIZE_6) }, { NULL, (WLAN_SECTION_SIZE_7) }
110 };
111
rockchip_init_wifi_mem(void)112 static int rockchip_init_wifi_mem(void)
113 {
114 int i;
115 int j;
116
117 for (i = 0; i < WLAN_SKB_BUF_NUM; i++) {
118 wlan_static_skb[i] =
119 dev_alloc_skb(((i < (WLAN_SKB_BUF_NUM / 2)) ?
120 (PAGE_SIZE * 1) :
121 (PAGE_SIZE * 2)));
122
123 if (!wlan_static_skb[i])
124 goto err_skb_alloc;
125 }
126
127 wlan_static_skb[i] = dev_alloc_skb((PAGE_SIZE * 4));
128 if (!wlan_static_skb[i])
129 goto err_skb_alloc;
130
131 for (i = 0; i <= 7; i++) {
132 wifi_mem_array[i].mem_ptr =
133 kmalloc(wifi_mem_array[i].size, GFP_KERNEL);
134
135 if (!wifi_mem_array[i].mem_ptr)
136 goto err_mem_alloc;
137 }
138 return 0;
139
140 err_mem_alloc:
141 pr_err("Failed to mem_alloc for WLAN\n");
142 for (j = 0; j < i; j++)
143 kfree(wifi_mem_array[j].mem_ptr);
144 i = WLAN_SKB_BUF_NUM;
145 err_skb_alloc:
146 pr_err("Failed to skb_alloc for WLAN\n");
147 for (j = 0; j < i; j++)
148 dev_kfree_skb(wlan_static_skb[j]);
149 dev_kfree_skb(wlan_static_skb[j]);
150
151 return -ENOMEM;
152 }
153
rockchip_mem_prealloc(int section,unsigned long size)154 void *rockchip_mem_prealloc(int section, unsigned long size)
155 {
156 if (section == PREALLOC_WLAN_SEC_NUM)
157 return wlan_static_skb;
158
159 if (section < 0 || section > 7)
160 return NULL;
161
162 if (wifi_mem_array[section].size < size)
163 return NULL;
164
165 return wifi_mem_array[section].mem_ptr;
166 }
167 #else
rockchip_mem_prealloc(int section,unsigned long size)168 void *rockchip_mem_prealloc(int section, unsigned long size)
169 {
170 return NULL;
171 }
172 #endif
173 EXPORT_SYMBOL(rockchip_mem_prealloc);
174
rfkill_set_wifi_bt_power(int on)175 int rfkill_set_wifi_bt_power(int on)
176 {
177 struct rfkill_wlan_data *mrfkill = g_rfkill;
178 struct rksdmmc_gpio *vbat;
179
180 LOG("%s: %d\n", __func__, on);
181
182 if (!mrfkill) {
183 LOG("%s: rfkill-wlan driver has not Successful initialized\n",
184 __func__);
185 return -1;
186 }
187
188 vbat = &mrfkill->pdata->vbat_n;
189 if (on) {
190 if (gpio_is_valid(vbat->io))
191 gpio_direction_output(vbat->io, vbat->enable);
192 } else {
193 if (gpio_is_valid(vbat->io))
194 gpio_direction_output(vbat->io, !(vbat->enable));
195 }
196 wifi_bt_vbat_state = on;
197 return 0;
198 }
199
200 /**************************************************************************
201 *
202 * get wifi power state Func
203 *
204 *************************************************************************/
rfkill_get_wifi_power_state(int * power)205 int rfkill_get_wifi_power_state(int *power)
206 {
207 struct rfkill_wlan_data *mrfkill = g_rfkill;
208
209 if (!mrfkill) {
210 LOG("%s: rfkill-wlan driver has not Successful initialized\n",
211 __func__);
212 return -1;
213 }
214
215 *power = wifi_power_state;
216
217 return 0;
218 }
219
220 /**************************************************************************
221 *
222 * Wifi Power Control Func
223 * 0 -> power off
224 * 1 -> power on
225 *
226 *************************************************************************/
rockchip_wifi_power(int on)227 int rockchip_wifi_power(int on)
228 {
229 struct rfkill_wlan_data *mrfkill = g_rfkill;
230 struct rksdmmc_gpio *poweron, *reset;
231 struct regulator *ldo = NULL;
232 int bt_power = 0;
233 bool toggle = false;
234
235 LOG("%s: %d\n", __func__, on);
236
237 if (!mrfkill) {
238 LOG("%s: rfkill-wlan driver has not Successful initialized\n",
239 __func__);
240 return -1;
241 }
242
243 if (mrfkill->pdata->wifi_power_remain && power_set_time) {
244 LOG("%s: wifi power is setted to be remain on.", __func__);
245 return 0;
246 }
247 power_set_time++;
248
249 if (!rfkill_get_bt_power_state(&bt_power, &toggle)) {
250 LOG("%s: toggle = %s\n", __func__, toggle ? "true" : "false");
251 }
252
253 if (mrfkill->pdata->mregulator.power_ctrl_by_pmu) {
254 int ret = -1;
255 char *ldostr;
256 int level = mrfkill->pdata->mregulator.enable;
257
258 ldostr = mrfkill->pdata->mregulator.pmu_regulator;
259 if (!ldostr)
260 return -1;
261 ldo = regulator_get(NULL, ldostr);
262 if (!ldo || IS_ERR(ldo)) {
263 LOG("\n\n\n%s get ldo error,please mod this\n\n\n",
264 __func__);
265 return -1;
266 }
267 if (on == level) {
268 regulator_set_voltage(ldo, 3000000, 3000000);
269 LOG("%s: %s enabled\n", __func__, ldostr);
270 ret = regulator_enable(ldo);
271 if (ret)
272 LOG("ldo enable failed\n");
273 wifi_power_state = 1;
274 LOG("wifi turn on power.\n");
275 } else {
276 LOG("%s: %s disabled\n", __func__, ldostr);
277 while (regulator_is_enabled(ldo) > 0) {
278 ret = regulator_disable(ldo);
279 if (ret)
280 LOG("ldo disable failed\n");
281 }
282 wifi_power_state = 0;
283 LOG("wifi shut off power.\n");
284 }
285 regulator_put(ldo);
286 msleep(100);
287 } else {
288 poweron = &mrfkill->pdata->power_n;
289 reset = &mrfkill->pdata->reset_n;
290
291 if (on) {
292 if (toggle) {
293 rfkill_set_wifi_bt_power(1);
294 msleep(100);
295 }
296
297 if (gpio_is_valid(poweron->io)) {
298 gpio_direction_output(poweron->io, poweron->enable);
299 msleep(100);
300 }
301
302 if (gpio_is_valid(reset->io)) {
303 gpio_direction_output(reset->io, reset->enable);
304 msleep(100);
305 }
306
307 wifi_power_state = 1;
308 LOG("wifi turn on power [GPIO%d-%d]\n", poweron->io, poweron->enable);
309 } else {
310 if (gpio_is_valid(poweron->io)) {
311 printk("wifi power off\n");
312 gpio_direction_output(poweron->io, !(poweron->enable));
313 msleep(100);
314 }
315
316 if (gpio_is_valid(reset->io)) {
317 gpio_direction_output(reset->io, !(reset->enable));
318 }
319
320 wifi_power_state = 0;
321 if (toggle) {
322 if (!bt_power) {
323 LOG("%s: wifi will set vbat to low\n", __func__);
324 rfkill_set_wifi_bt_power(0);
325 } else {
326 LOG("%s: wifi shouldn't control the vbat\n", __func__);
327 }
328 }
329 LOG("wifi shut off power [GPIO%d-%d]\n", poweron->io, !poweron->enable);
330 }
331 }
332
333 return 0;
334 }
335 EXPORT_SYMBOL(rockchip_wifi_power);
336
337 /**************************************************************************
338 *
339 * Wifi Sdio Detect Func
340 *
341 *************************************************************************/
rockchip_wifi_set_carddetect(int val)342 int rockchip_wifi_set_carddetect(int val)
343 {
344 return 0;
345 }
346 EXPORT_SYMBOL(rockchip_wifi_set_carddetect);
347
348 /**************************************************************************
349 *
350 * Wifi Get Interrupt irq Func
351 *
352 *************************************************************************/
rockchip_wifi_get_oob_irq(void)353 int rockchip_wifi_get_oob_irq(void)
354 {
355 struct rfkill_wlan_data *mrfkill = g_rfkill;
356 struct rksdmmc_gpio *wifi_int_irq;
357
358 LOG("%s: Enter\n", __func__);
359
360 if (!mrfkill) {
361 LOG("%s: rfkill-wlan driver has not Successful initialized\n",
362 __func__);
363 return -1;
364 }
365
366 wifi_int_irq = &mrfkill->pdata->wifi_int_b;
367 if (gpio_is_valid(wifi_int_irq->io)) {
368 return gpio_to_irq(wifi_int_irq->io);
369 //return wifi_int_irq->io;
370 } else {
371 LOG("%s: wifi OOB pin isn't defined.\n", __func__);
372 }
373
374 return -1;
375 }
376 EXPORT_SYMBOL(rockchip_wifi_get_oob_irq);
377
rockchip_wifi_get_oob_irq_flag(void)378 int rockchip_wifi_get_oob_irq_flag(void)
379 {
380 struct rfkill_wlan_data *mrfkill = g_rfkill;
381 struct rksdmmc_gpio *wifi_int_irq;
382 int gpio_flags = -1;
383
384 if (mrfkill) {
385 wifi_int_irq = &mrfkill->pdata->wifi_int_b;
386 if (gpio_is_valid(wifi_int_irq->io))
387 gpio_flags = wifi_int_irq->enable;
388 }
389
390 return gpio_flags;
391 }
392 EXPORT_SYMBOL(rockchip_wifi_get_oob_irq_flag);
393
394 /**************************************************************************
395 *
396 * Wifi Reset Func
397 *
398 *************************************************************************/
rockchip_wifi_reset(int on)399 int rockchip_wifi_reset(int on)
400 {
401 return 0;
402 }
403 EXPORT_SYMBOL(rockchip_wifi_reset);
404
405 /**************************************************************************
406 *
407 * Wifi MAC custom Func
408 *
409 *************************************************************************/
410 #include <linux/etherdevice.h>
411 #include <linux/errno.h>
412 u8 wifi_custom_mac_addr[6] = { 0, 0, 0, 0, 0, 0 };
413
414 //#define RANDOM_ADDRESS_SAVE
get_wifi_addr_vendor(unsigned char * addr)415 static int get_wifi_addr_vendor(unsigned char *addr)
416 {
417 int ret;
418 int count = 5;
419
420 while (count-- > 0) {
421 if (is_rk_vendor_ready())
422 break;
423 /* sleep 500ms wait rk vendor driver ready */
424 msleep(500);
425 }
426 ret = rk_vendor_read(WIFI_MAC_ID, addr, 6);
427 if (ret != 6 || is_zero_ether_addr(addr)) {
428 LOG("%s: rk_vendor_read wifi mac address failed (%d)\n",
429 __func__, ret);
430 #ifdef CONFIG_WIFI_GENERATE_RANDOM_MAC_ADDR
431 random_ether_addr(addr);
432 LOG("%s: generate random wifi mac address: "
433 "%02x:%02x:%02x:%02x:%02x:%02x\n",
434 __func__, addr[0], addr[1], addr[2], addr[3], addr[4],
435 addr[5]);
436 ret = rk_vendor_write(WIFI_MAC_ID, addr, 6);
437 if (ret != 0) {
438 LOG("%s: rk_vendor_write failed %d\n"
439 __func__, ret);
440 memset(addr, 0, 6);
441 return -1;
442 }
443 #else
444 return -1;
445 #endif
446 } else {
447 LOG("%s: rk_vendor_read wifi mac address: "
448 "%02x:%02x:%02x:%02x:%02x:%02x\n",
449 __func__, addr[0], addr[1], addr[2], addr[3], addr[4],
450 addr[5]);
451 }
452 return 0;
453 }
454
rockchip_wifi_mac_addr(unsigned char * buf)455 int rockchip_wifi_mac_addr(unsigned char *buf)
456 {
457 char mac_buf[20] = { 0 };
458
459 LOG("%s: enter.\n", __func__);
460
461 // from vendor storage
462 if (is_zero_ether_addr(wifi_custom_mac_addr)) {
463 if (get_wifi_addr_vendor(wifi_custom_mac_addr) != 0)
464 return -1;
465 }
466
467 sprintf(mac_buf, "%02x:%02x:%02x:%02x:%02x:%02x",
468 wifi_custom_mac_addr[0], wifi_custom_mac_addr[1],
469 wifi_custom_mac_addr[2], wifi_custom_mac_addr[3],
470 wifi_custom_mac_addr[4], wifi_custom_mac_addr[5]);
471 LOG("falsh wifi_custom_mac_addr=[%s]\n", mac_buf);
472
473 if (is_valid_ether_addr(wifi_custom_mac_addr)) {
474 if (!strncmp(wifi_chip_type_string, "rtl", 3))
475 wifi_custom_mac_addr[0] &= ~0x2; // for p2p
476 } else {
477 LOG("This mac address is not valid, ignored...\n");
478 return -1;
479 }
480
481 memcpy(buf, wifi_custom_mac_addr, 6);
482
483 return 0;
484 }
485 EXPORT_SYMBOL(rockchip_wifi_mac_addr);
486
487 /**************************************************************************
488 *
489 * wifi get country code func
490 *
491 *************************************************************************/
492 struct cntry_locales_custom {
493 char iso_abbrev[4]; /* ISO 3166-1 country abbreviation */
494 char custom_locale[4]; /* Custom firmware locale */
495 int custom_locale_rev; /* Custom local revisin default -1 */
496 };
497
498 static struct cntry_locales_custom country_cloc;
499
rockchip_wifi_country_code(char * ccode)500 void *rockchip_wifi_country_code(char *ccode)
501 {
502 struct cntry_locales_custom *mcloc;
503
504 LOG("%s: set country code [%s]\n", __func__, ccode);
505 mcloc = &country_cloc;
506 memcpy(mcloc->custom_locale, ccode, 4);
507 mcloc->custom_locale_rev = 0;
508
509 return mcloc;
510 }
511 EXPORT_SYMBOL(rockchip_wifi_country_code);
512 /**************************************************************************/
513
rfkill_rk_setup_gpio(struct rksdmmc_gpio * gpio,const char * prefix,const char * name)514 static int rfkill_rk_setup_gpio(struct rksdmmc_gpio *gpio, const char *prefix,
515 const char *name)
516 {
517 if (gpio_is_valid(gpio->io)) {
518 int ret = 0;
519
520 sprintf(gpio->name, "%s_%s", prefix, name);
521 ret = gpio_request(gpio->io, gpio->name);
522 if (ret) {
523 LOG("Failed to get %s gpio.\n", gpio->name);
524 return -1;
525 }
526 }
527
528 return 0;
529 }
530
531 #ifdef CONFIG_OF
wlan_platdata_parse_dt(struct device * dev,struct rksdmmc_gpio_wifi_moudle * data)532 static int wlan_platdata_parse_dt(struct device *dev,
533 struct rksdmmc_gpio_wifi_moudle *data)
534 {
535 struct device_node *node = dev->of_node;
536 const char *strings;
537 u32 value;
538 int gpio, ret;
539 enum of_gpio_flags flags;
540 u32 ext_clk_value = 0;
541
542 if (!node)
543 return -ENODEV;
544
545 memset(data, 0, sizeof(*data));
546
547 #ifdef CONFIG_MFD_SYSCON
548 data->grf = syscon_regmap_lookup_by_phandle(node, "rockchip,grf");
549 if (IS_ERR(data->grf)) {
550 LOG("can't find rockchip,grf property\n");
551 //return -1;
552 }
553 #endif
554
555 ret = of_property_read_string(node, "wifi_chip_type", &strings);
556 if (ret) {
557 LOG("%s: Can not read wifi_chip_type, set default to rkwifi.\n",
558 __func__);
559 strcpy(wifi_chip_type_string, "rkwifi");
560 } else {
561 if (strings && strlen(strings) < 64)
562 strcpy(wifi_chip_type_string, strings);
563 }
564 LOG("%s: wifi_chip_type = %s\n", __func__, wifi_chip_type_string);
565
566 if (of_find_property(node, "keep_wifi_power_on", NULL)) {
567 data->wifi_power_remain = true;
568 LOG("%s: wifi power remain\n", __func__);
569 } else {
570 data->wifi_power_remain = false;
571 LOG("%s: enable wifi power control.\n", __func__);
572 }
573
574 if (of_find_property(node, "power_ctrl_by_pmu", NULL)) {
575 data->mregulator.power_ctrl_by_pmu = true;
576 ret = of_property_read_string(node, "power_pmu_regulator",
577 &strings);
578 if (ret) {
579 LOG("%s: Can not read property: power_pmu_regulator.\n",
580 __func__);
581 data->mregulator.power_ctrl_by_pmu = false;
582 } else {
583 LOG("%s: wifi power controlled by pmu(%s).\n", __func__,
584 strings);
585 sprintf(data->mregulator.pmu_regulator, "%s", strings);
586 }
587 ret = of_property_read_u32(node, "power_pmu_enable_level",
588 &value);
589 if (ret) {
590 LOG("%s: Can not read: power_pmu_enable_level.\n",
591 __func__);
592 data->mregulator.power_ctrl_by_pmu = false;
593 } else {
594 LOG("%s: wifi power controlled by pmu(level = %s).\n",
595 __func__, (value == 1) ? "HIGH" : "LOW");
596 data->mregulator.enable = value;
597 }
598 } else {
599 data->mregulator.power_ctrl_by_pmu = false;
600 LOG("%s: wifi power controled by gpio.\n", __func__);
601 gpio = of_get_named_gpio_flags(node, "WIFI,poweren_gpio", 0,
602 &flags);
603 if (gpio_is_valid(gpio)) {
604 data->power_n.io = gpio;
605 data->power_n.enable =
606 (flags == GPIO_ACTIVE_HIGH) ? 1 : 0;
607 LOG("%s: WIFI,poweren_gpio = %d flags = %d.\n",
608 __func__, gpio, flags);
609 } else {
610 data->power_n.io = -1;
611 }
612 gpio = of_get_named_gpio_flags(node, "WIFI,vbat_gpio", 0,
613 &flags);
614 if (gpio_is_valid(gpio)) {
615 data->vbat_n.io = gpio;
616 data->vbat_n.enable =
617 (flags == GPIO_ACTIVE_HIGH) ? 1 : 0;
618 LOG("%s: WIFI,vbat_gpio = %d, flags = %d.\n",
619 __func__, gpio, flags);
620 } else {
621 data->vbat_n.io = -1;
622 }
623 gpio = of_get_named_gpio_flags(node, "WIFI,reset_gpio", 0,
624 &flags);
625 if (gpio_is_valid(gpio)) {
626 data->reset_n.io = gpio;
627 data->reset_n.enable =
628 (flags == GPIO_ACTIVE_HIGH) ? 1 : 0;
629 LOG("%s: WIFI,reset_gpio = %d, flags = %d.\n",
630 __func__, gpio, flags);
631 } else {
632 data->reset_n.io = -1;
633 }
634 gpio = of_get_named_gpio_flags(node, "WIFI,host_wake_irq", 0,
635 &flags);
636 if (gpio_is_valid(gpio)) {
637 data->wifi_int_b.io = gpio;
638 data->wifi_int_b.enable = !flags;
639 LOG("%s: WIFI,host_wake_irq = %d, flags = %d.\n",
640 __func__, gpio, flags);
641 } else {
642 data->wifi_int_b.io = -1;
643 }
644 }
645
646 data->ext_clk = devm_clk_get(dev, "clk_wifi");
647 if (IS_ERR(data->ext_clk)) {
648 LOG("%s: The ref_wifi_clk not found !\n", __func__);
649 } else {
650 of_property_read_u32(node, "ref-clock-frequency",
651 &ext_clk_value);
652 if (ext_clk_value > 0) {
653 ret = clk_set_rate(data->ext_clk, ext_clk_value);
654 if (ret)
655 LOG("%s: set ref clk error!\n", __func__);
656 }
657
658 ret = clk_prepare_enable(data->ext_clk);
659 if (ret)
660 LOG("%s: enable ref clk error!\n", __func__);
661
662 /* WIFI clock (REF_CLKOUT) output enable.
663 * 1'b0: drive disable
664 * 1'b1: output enable
665 */
666 if (of_machine_is_compatible("rockchip,rk3308"))
667 regmap_write(data->grf, 0x0314, 0x00020002);
668 }
669
670 return 0;
671 }
672 #endif //CONFIG_OF
673
674 #if defined(CONFIG_HAS_EARLYSUSPEND)
675 #include <linux/earlysuspend.h>
676
wlan_early_suspend(struct early_suspend * h)677 static void wlan_early_suspend(struct early_suspend *h)
678 {
679 LOG("%s :enter\n", __func__);
680
681 return;
682 }
683
wlan_late_resume(struct early_suspend * h)684 static void wlan_late_resume(struct early_suspend *h)
685 {
686 LOG("%s :enter\n", __func__);
687
688 return;
689 }
690
691 struct early_suspend wlan_early_suspend {
692 .level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN - 20;
693 .suspend = wlan_early_suspend;
694 .resume = wlan_late_resume;
695 }
696 #endif
697
698 static void
rfkill_wlan_early_suspend(void)699 rfkill_wlan_early_suspend(void)
700 {
701 //LOG("%s :enter\n", __func__);
702
703 return;
704 }
705
rfkill_wlan_later_resume(void)706 static void rfkill_wlan_later_resume(void)
707 {
708 //LOG("%s :enter\n", __func__);
709
710 return;
711 }
712
rfkill_wlan_fb_event_notify(struct notifier_block * self,unsigned long action,void * data)713 static int rfkill_wlan_fb_event_notify(struct notifier_block *self,
714 unsigned long action, void *data)
715 {
716 struct fb_event *event = data;
717 int blank_mode = *((int *)event->data);
718
719 switch (blank_mode) {
720 case FB_BLANK_UNBLANK:
721 rfkill_wlan_later_resume();
722 break;
723 case FB_BLANK_NORMAL:
724 rfkill_wlan_early_suspend();
725 break;
726 default:
727 rfkill_wlan_early_suspend();
728 break;
729 }
730
731 return 0;
732 }
733
734 static struct notifier_block rfkill_wlan_fb_notifier = {
735 .notifier_call = rfkill_wlan_fb_event_notify,
736 };
737
wifi_power_show(struct class * cls,struct class_attribute * attr,char * _buf)738 static ssize_t wifi_power_show(struct class *cls, struct class_attribute *attr, char *_buf)
739 {
740 return sprintf(_buf, "%d\n", wifi_power_state);
741 }
742
wifi_power_store(struct class * cls,struct class_attribute * attr,const char * _buf,size_t _count)743 static ssize_t wifi_power_store(struct class *cls, struct class_attribute *attr, const char *_buf, size_t _count)
744 {
745 long poweren = 0;
746
747 if (kstrtol(_buf, 10, &poweren) < 0)
748 return -EINVAL;
749
750 LOG("%s: poweren = %ld\n", __func__, poweren);
751
752 if (poweren > 0)
753 rockchip_wifi_power(1);
754 else
755 rockchip_wifi_power(0);
756
757 return _count;
758 }
759
760 static CLASS_ATTR_RW(wifi_power);
761
wifi_bt_vbat_show(struct class * cls,struct class_attribute * attr,char * _buf)762 static ssize_t wifi_bt_vbat_show(struct class *cls, struct class_attribute *attr, char *_buf)
763 {
764 return sprintf(_buf, "%d\n", wifi_bt_vbat_state);
765 }
766
wifi_bt_vbat_store(struct class * cls,struct class_attribute * attr,const char * _buf,size_t _count)767 static ssize_t wifi_bt_vbat_store(struct class *cls, struct class_attribute *attr, const char *_buf, size_t _count)
768 {
769 long vbat = 0;
770
771 if (kstrtol(_buf, 10, &vbat) < 0)
772 return -EINVAL;
773
774 LOG("%s: vbat = %ld\n", __func__, vbat);
775
776 if (vbat > 0)
777 rfkill_set_wifi_bt_power(1);
778 else
779 rfkill_set_wifi_bt_power(0);
780
781 return _count;
782 }
783
784 static CLASS_ATTR_RW(wifi_bt_vbat);
785
wifi_set_carddetect_store(struct class * cls,struct class_attribute * attr,const char * _buf,size_t _count)786 static ssize_t wifi_set_carddetect_store(struct class *cls, struct class_attribute *attr, const char *_buf, size_t _count)
787 {
788 long val = 0;
789
790 if (kstrtol(_buf, 10, &val) < 0)
791 return -EINVAL;
792
793 LOG("%s: val = %ld\n", __func__, val);
794
795 if (val > 0)
796 rockchip_wifi_set_carddetect(1);
797 else
798 rockchip_wifi_set_carddetect(0);
799
800 return _count;
801 }
802
803 static CLASS_ATTR_WO(wifi_set_carddetect);
804
805 static struct attribute *rkwifi_power_attrs[] = {
806 &class_attr_wifi_power.attr,
807 &class_attr_wifi_bt_vbat.attr,
808 &class_attr_wifi_set_carddetect.attr,
809 NULL,
810 };
811 ATTRIBUTE_GROUPS(rkwifi_power);
812
813 /** Device model classes */
814 static struct class rkwifi_power = {
815 .name = "rkwifi",
816 .class_groups = rkwifi_power_groups,
817 };
818
rfkill_wlan_probe(struct platform_device * pdev)819 static int rfkill_wlan_probe(struct platform_device *pdev)
820 {
821 struct rfkill_wlan_data *rfkill;
822 struct rksdmmc_gpio_wifi_moudle *pdata = pdev->dev.platform_data;
823 int ret = -1;
824
825 LOG("Enter %s\n", __func__);
826
827 class_register(&rkwifi_power);
828
829 if (!pdata) {
830 #ifdef CONFIG_OF
831 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
832 if (!pdata)
833 return -ENOMEM;
834
835 ret = wlan_platdata_parse_dt(&pdev->dev, pdata);
836 if (ret < 0) {
837 #endif
838 LOG("%s: No platform data specified\n", __func__);
839 return ret;
840 #ifdef CONFIG_OF
841 }
842 #endif
843 }
844
845 rfkill = kzalloc(sizeof(*rfkill), GFP_KERNEL);
846 if (!rfkill)
847 goto rfkill_alloc_fail;
848
849 rfkill->pdata = pdata;
850 g_rfkill = rfkill;
851
852 LOG("%s: init gpio\n", __func__);
853
854 if (!pdata->mregulator.power_ctrl_by_pmu) {
855 ret = rfkill_rk_setup_gpio(&pdata->vbat_n, wlan_name,
856 "wlan_vbat");
857 if (ret)
858 goto fail_alloc;
859
860 ret = rfkill_rk_setup_gpio(&pdata->reset_n, wlan_name,
861 "wlan_reset");
862 if (ret)
863 goto fail_alloc;
864 }
865
866 wake_lock_init(&rfkill->wlan_irq_wl, WAKE_LOCK_SUSPEND,
867 "rfkill_wlan_wake");
868
869 rfkill_set_wifi_bt_power(1);
870
871 #ifdef CONFIG_SDIO_KEEPALIVE
872 if (gpio_is_valid(pdata->power_n.io) &&
873 gpio_direction_output(pdata->power_n.io, pdata->power_n.enable);
874 #endif
875
876
877 if (pdata->wifi_power_remain)
878 rockchip_wifi_power(1);
879
880 #if BCM_STATIC_MEMORY_SUPPORT
881 rockchip_init_wifi_mem();
882 #endif
883
884 #if defined(CONFIG_HAS_EARLYSUSPEND)
885 register_early_suspend(wlan_early_suspend);
886 #endif
887
888 fb_register_client(&rfkill_wlan_fb_notifier);
889
890 LOG("Exit %s\n", __func__);
891
892 return 0;
893
894 fail_alloc:
895 kfree(rfkill);
896 rfkill_alloc_fail:
897 kfree(pdata);
898
899 g_rfkill = NULL;
900
901 return ret;
902 }
903
904 static int rfkill_wlan_remove(struct platform_device *pdev)
905 {
906 struct rfkill_wlan_data *rfkill = platform_get_drvdata(pdev);
907
908 LOG("Enter %s\n", __func__);
909
910 wake_lock_destroy(&rfkill->wlan_irq_wl);
911
912 fb_unregister_client(&rfkill_wlan_fb_notifier);
913
914 if (gpio_is_valid(rfkill->pdata->power_n.io))
915 gpio_free(rfkill->pdata->power_n.io);
916
917 if (gpio_is_valid(rfkill->pdata->reset_n.io))
918 gpio_free(rfkill->pdata->reset_n.io);
919
920 kfree(rfkill);
921 g_rfkill = NULL;
922
923 return 0;
924 }
925
926 static void rfkill_wlan_shutdown(struct platform_device *pdev)
927 {
928 LOG("Enter %s\n", __func__);
929
930 rockchip_wifi_power(0);
931 rfkill_set_wifi_bt_power(0);
932 }
933
934 static int rfkill_wlan_suspend(struct platform_device *pdev, pm_message_t state)
935 {
936 LOG("Enter %s\n", __func__);
937 return 0;
938 }
939
940 static int rfkill_wlan_resume(struct platform_device *pdev)
941 {
942 LOG("Enter %s\n", __func__);
943 return 0;
944 }
945
946 #ifdef CONFIG_OF
947 static struct of_device_id wlan_platdata_of_match[] = {
948 { .compatible = "wlan-platdata" },
949 {}
950 };
951 MODULE_DEVICE_TABLE(of, wlan_platdata_of_match);
952 #endif //CONFIG_OF
953
954 static struct platform_driver rfkill_wlan_driver = {
955 .probe = rfkill_wlan_probe,
956 .remove = rfkill_wlan_remove,
957 .shutdown = rfkill_wlan_shutdown,
958 .suspend = rfkill_wlan_suspend,
959 .resume = rfkill_wlan_resume,
960 .driver = {
961 .name = "wlan-platdata",
962 .owner = THIS_MODULE,
963 .of_match_table = of_match_ptr(wlan_platdata_of_match),
964 },
965 };
966
967 int __init rfkill_wlan_init(void)
968 {
969 LOG("Enter %s\n", __func__);
970 return platform_driver_register(&rfkill_wlan_driver);
971 }
972
973 void __exit rfkill_wlan_exit(void)
974 {
975 LOG("Enter %s\n", __func__);
976 platform_driver_unregister(&rfkill_wlan_driver);
977 }
978
979 MODULE_DESCRIPTION("rock-chips rfkill for wifi v0.1");
980 MODULE_AUTHOR("gwl@rock-chips.com");
981 MODULE_LICENSE("GPL");
982