2 * Copyright (C) 2012 ROCKCHIP, Inc.
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.
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.
14 /* Rock-chips rfkill driver for wifi
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>
24 #include <linux/regulator/consumer.h>
25 #include <linux/delay.h>
26 #include <linux/rfkill-wlan.h>
27 #include <linux/wakelock.h>
28 #include <linux/interrupt.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>
37 #include <linux/of_device.h>
38 #include <linux/of_gpio.h>
42 #define DBG(x...) printk(KERN_INFO "[WLAN_RFKILL]: "x)
47 #define LOG(x...) printk(KERN_INFO "[WLAN_RFKILL]: "x)
49 struct rfkill_wlan_data {
50 struct rksdmmc_gpio_wifi_moudle *pdata;
51 struct wake_lock wlan_irq_wl;
54 static struct rfkill_wlan_data *g_rfkill = NULL;
56 static const char wlan_name[] =
57 #if defined (CONFIG_BCM4330)
58 #if defined (CONFIG_BT_MODULE_NH660)
63 #elif defined (CONFIG_RK903)
64 #if defined(CONFIG_RKWIFI_26M)
69 #elif defined(CONFIG_BCM4329)
71 #elif defined(CONFIG_MV8787)
73 #elif defined(CONFIG_AP6210)
74 #if defined(CONFIG_RKWIFI_26M)
79 #elif defined(CONFIG_AP6330)
81 #elif defined(CONFIG_AP6476)
83 #elif defined(CONFIG_AP6493)
90 /***********************************************************
92 * Broadcom Wifi Static Memory
94 **********************************************************/
95 #define BCM_STATIC_MEMORY_SUPPORT 0
96 //===========================
97 #if BCM_STATIC_MEMORY_SUPPORT
98 #define PREALLOC_WLAN_SEC_NUM 4
99 #define PREALLOC_WLAN_BUF_NUM 160
100 #define PREALLOC_WLAN_SECTION_HEADER 24
101 #define WLAN_SKB_BUF_NUM 16
103 #define WLAN_SECTION_SIZE_0 (PREALLOC_WLAN_BUF_NUM * 128)
104 #define WLAN_SECTION_SIZE_1 (PREALLOC_WLAN_BUF_NUM * 128)
105 #define WLAN_SECTION_SIZE_2 (PREALLOC_WLAN_BUF_NUM * 512)
106 #define WLAN_SECTION_SIZE_3 (PREALLOC_WLAN_BUF_NUM * 1024)
107 #define WLAN_SECTION_SIZE_5 (PREALLOC_WLAN_BUF_NUM * 512)
109 static struct sk_buff *wlan_static_skb[WLAN_SKB_BUF_NUM];
111 struct wifi_mem_prealloc {
116 static struct wifi_mem_prealloc wifi_mem_array[5] = {
117 {NULL, (WLAN_SECTION_SIZE_0 + PREALLOC_WLAN_SECTION_HEADER)},
118 {NULL, (WLAN_SECTION_SIZE_1 + PREALLOC_WLAN_SECTION_HEADER)},
119 {NULL, (WLAN_SECTION_SIZE_2 + PREALLOC_WLAN_SECTION_HEADER)},
120 {NULL, (WLAN_SECTION_SIZE_3 + PREALLOC_WLAN_SECTION_HEADER)},
121 {NULL, (WLAN_SECTION_SIZE_5 + PREALLOC_WLAN_SECTION_HEADER)}
124 static int __init rockchip_init_wifi_mem(void)
129 for (i = 0 ; i < WLAN_SKB_BUF_NUM ; i++) {
130 wlan_static_skb[i] = dev_alloc_skb(
131 ((i < (WLAN_SKB_BUF_NUM / 2)) ? 4096 : 8192));
133 if (!wlan_static_skb[i])
137 for (i = 0 ; i < 5; i++) {
138 wifi_mem_array[i].mem_ptr =
139 kmalloc(wifi_mem_array[i].size, GFP_KERNEL);
141 if (!wifi_mem_array[i].mem_ptr)
147 pr_err("Failed to mem_alloc for WLAN\n");
148 for (j = 0 ; j < i ; j++)
149 kfree(wifi_mem_array[j].mem_ptr);
150 i = WLAN_SKB_BUF_NUM;
152 pr_err("Failed to skb_alloc for WLAN\n");
153 for (j = 0 ; j < i ; j++)
154 dev_kfree_skb(wlan_static_skb[j]);
159 void *rockchip_mem_prealloc(int section, unsigned long size)
161 if (section == PREALLOC_WLAN_SEC_NUM)
162 return wlan_static_skb;
164 if ((section < 0) || (section > 5))
168 return wifi_mem_array[4].mem_ptr;
170 if (wifi_mem_array[section].size < size)
173 return wifi_mem_array[section].mem_ptr;
176 void *rockchip_mem_prealloc(int section, unsigned long size) { return NULL;}
178 EXPORT_SYMBOL(rockchip_mem_prealloc);
180 /**************************************************************************
182 * Wifi Power Control Func
186 *************************************************************************/
187 int rockchip_wifi_power(int on)
189 struct rfkill_wlan_data *mrfkill = g_rfkill;
190 struct rksdmmc_gpio *poweron, *reset;
191 struct regulator *ldo = NULL;
193 LOG("%s: %d\n", __func__, on);
195 if (mrfkill == NULL) {
196 LOG("%s: rfkill-wlan driver has not Successful initialized\n", __func__);
200 if (mrfkill->pdata->mregulator.power_ctrl_by_pmu) {
203 int level = mrfkill->pdata->mregulator.enable;
205 ldostr = mrfkill->pdata->mregulator.pmu_regulator;
206 if (ldostr == NULL) {
207 LOG("%s: wifi power set to be controled by pmic, but which one?\n", __func__);
210 ldo = regulator_get(NULL, ldostr);
212 LOG("\n\n\n%s get ldo error,please mod this\n\n\n", __func__);
215 regulator_set_voltage(ldo, 3000000, 3000000);
216 LOG("%s: %s enabled\n", __func__, ldostr);
217 ret = regulator_enable(ldo);
219 LOG("%s: faild to enable %s\n", __func__, ldostr);
221 LOG("wifi turn on power.\n");
223 LOG("wifi shut off power.\n");
224 LOG("%s: %s disabled\n", __func__, ldostr);
225 ret = regulator_disable(ldo);
227 LOG("%s: faild to disable %s\n", __func__, ldostr);
234 poweron = &mrfkill->pdata->power_n;
235 reset = &mrfkill->pdata->reset_n;
238 if (gpio_is_valid(poweron->io)) {
239 gpio_set_value(poweron->io, poweron->enable);
243 if (gpio_is_valid(reset->io)) {
244 gpio_set_value(reset->io, reset->enable);
247 LOG("wifi turn on power. %d\n", poweron->io);
249 if (gpio_is_valid(poweron->io)) {
250 gpio_set_value(poweron->io, !(poweron->enable));
254 if (gpio_is_valid(reset->io)) {
255 gpio_set_value(reset->io, !(reset->enable));
258 LOG("wifi shut off power.\n");
264 EXPORT_SYMBOL(rockchip_wifi_power);
266 /**************************************************************************
268 * Wifi Sdio Detect Func
270 *************************************************************************/
271 extern int mmc_host_rescan(struct mmc_host *host);
272 int rockchip_wifi_set_carddetect(void)
274 return mmc_host_rescan(NULL);//NULL => SDIO host
276 EXPORT_SYMBOL(rockchip_wifi_set_carddetect);
278 /**************************************************************************
280 * Wifi Get Interrupt irq Func
282 *************************************************************************/
283 int rockchip_wifi_get_oob_irq(void)
285 struct rfkill_wlan_data *mrfkill = g_rfkill;
286 struct rksdmmc_gpio *wifi_int_irq;
288 LOG("%s: Enter\n", __func__);
290 if (mrfkill == NULL) {
291 LOG("%s: rfkill-wlan driver has not Successful initialized\n", __func__);
295 wifi_int_irq = &mrfkill->pdata->wifi_int_b;
296 if (gpio_is_valid(wifi_int_irq->io)) {
297 return gpio_to_irq(wifi_int_irq->io);
298 //return wifi_int_irq->io;
300 LOG("%s: wifi OOB pin isn't defined.\n", __func__);
305 EXPORT_SYMBOL(rockchip_wifi_get_oob_irq);
307 /**************************************************************************
311 *************************************************************************/
312 int rockchip_wifi_reset(int on)
316 EXPORT_SYMBOL(rockchip_wifi_reset);
318 /**************************************************************************
320 * Wifi MAC custom Func
322 *************************************************************************/
323 #include <linux/etherdevice.h>
324 u8 wifi_custom_mac_addr[6] = {0,0,0,0,0,0};
325 extern char GetSNSectorInfo(char * pbuf);
326 int rockchip_wifi_mac_addr(unsigned char *buf)
328 char mac_buf[20] = {0};
329 LOG("%s: enter.\n", __func__);
332 if(is_zero_ether_addr(wifi_custom_mac_addr)) {
334 char *tempBuf = kmalloc(512, GFP_KERNEL);
336 GetSNSectorInfo(tempBuf);
337 for (i = 506; i <= 511; i++)
338 wifi_custom_mac_addr[i-506] = tempBuf[i];
345 sprintf(mac_buf,"%02x:%02x:%02x:%02x:%02x:%02x",wifi_custom_mac_addr[0],wifi_custom_mac_addr[1],
346 wifi_custom_mac_addr[2],wifi_custom_mac_addr[3],wifi_custom_mac_addr[4],wifi_custom_mac_addr[5]);
347 LOG("falsh wifi_custom_mac_addr=[%s]\n", mac_buf);
349 if (is_valid_ether_addr(wifi_custom_mac_addr)) {
350 if (2 == (wifi_custom_mac_addr[0] & 0x0F)) {
351 LOG("This mac address come into conflict with the address of direct, ignored...\n");
355 LOG("This mac address is not valid, ignored...\n");
359 #if defined(CONFIG_RKWIFI)
360 memcpy(buf, wifi_custom_mac_addr, 6);
362 memcpy(buf, mac_buf, strlen(mac_buf));//realtek's wifi use this branch
366 EXPORT_SYMBOL(rockchip_wifi_mac_addr);
368 /**************************************************************************
370 * wifi get country code func
372 *************************************************************************/
373 struct cntry_locales_custom {
374 char iso_abbrev[4]; /* ISO 3166-1 country abbreviation */
375 char custom_locale[4]; /* Custom firmware locale */
376 int custom_locale_rev; /* Custom local revisin default -1 */
379 static struct cntry_locales_custom country_cloc;
381 void *rockchip_wifi_country_code(char *ccode)
383 struct cntry_locales_custom *mcloc;
385 LOG("%s: set country code [%s]\n", __func__, ccode);
386 mcloc = &country_cloc;
387 memcpy(mcloc->custom_locale, ccode, 4);
388 mcloc->custom_locale_rev = 0;
392 EXPORT_SYMBOL(rockchip_wifi_country_code);
393 /**************************************************************************/
395 static int rfkill_rk_setup_gpio(struct rksdmmc_gpio *gpio, const char* prefix, const char* name)
397 if (gpio_is_valid(gpio->io)) {
399 sprintf(gpio->name, "%s_%s", prefix, name);
400 ret = gpio_request(gpio->io, gpio->name);
402 LOG("Failed to get %s gpio.\n", gpio->name);
411 static int wlan_platdata_parse_dt(struct device *dev,
412 struct rksdmmc_gpio_wifi_moudle *data)
414 struct device_node *node = dev->of_node;
418 enum of_gpio_flags flags;
423 memset(data, 0, sizeof(*data));
425 ret = of_property_read_u32(node, "sdio_vref", &value);
427 LOG("%s: Can't get sdio vref.", __func__);
429 data->sdio_vol = value;
431 if (of_find_property(node, "power_ctrl_by_pmu", NULL)) {
432 data->mregulator.power_ctrl_by_pmu = true;
433 ret = of_property_read_string(node, "pmu_regulator", &strings);
435 LOG("%s: Can not read property: pmu_regulator.\n", __func__);
436 data->mregulator.power_ctrl_by_pmu = false;
438 LOG("%s: wifi power controled by pmu(%s).\n", __func__, strings);
439 sprintf(data->mregulator.pmu_regulator, "%s", strings);
441 ret = of_property_read_u32(node, "pmu_enable_level", &value);
443 LOG("%s: Can not read property: pmu_enable_level.\n", __func__);
444 data->mregulator.power_ctrl_by_pmu = false;
446 LOG("%s: wifi power controled by pmu(level = %s).\n", __func__, (value == 1)?"HIGH":"LOW");
447 data->mregulator.enable = value;
450 data->mregulator.power_ctrl_by_pmu = false;
451 LOG("%s: wifi power controled by gpio.\n", __func__);
452 gpio = of_get_named_gpio_flags(node, "WIFI,poweren_gpio", 0, &flags);
453 if (gpio_is_valid(gpio)){
454 data->power_n.io = gpio;
455 data->power_n.enable = (flags == GPIO_ACTIVE_HIGH)? 1:0;
456 LOG("%s: get property: WIFI,poweren_gpio = %d, flags = %d.\n", __func__, gpio, flags);
458 gpio = of_get_named_gpio_flags(node, "WIFI,reset_gpio", 0, &flags);
459 if (gpio_is_valid(gpio)){
460 data->reset_n.io = gpio;
461 data->reset_n.enable = (flags == GPIO_ACTIVE_HIGH)? 1:0;
462 LOG("%s: get property: WIFI,reset_gpio = %d, flags = %d.\n", __func__, gpio, flags);
464 gpio = of_get_named_gpio_flags(node, "WIFI,host_wake_irq", 0, &flags);
465 if (gpio_is_valid(gpio)){
466 data->wifi_int_b.io = gpio;
467 data->wifi_int_b.enable = flags;
468 LOG("%s: get property: WIFI,host_wake_irq = %d, flags = %d.\n", __func__, gpio, flags);
476 #if defined(CONFIG_HAS_EARLYSUSPEND)
477 #include <linux/earlysuspend.h>
479 static void wlan_early_suspend(struct early_suspend *h)
481 LOG("%s :enter\n", __func__);
486 static void wlan_late_resume(struct early_suspend *h)
488 LOG("%s :enter\n", __func__);
493 struct early_suspend wlan_early_suspend {
494 .level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN - 20;
495 .suspend = wlan_early_suspend;
496 .resume = wlan_late_resume;
500 static int rfkill_wlan_probe(struct platform_device *pdev)
502 struct rfkill_wlan_data *rfkill;
503 struct rksdmmc_gpio_wifi_moudle *pdata = pdev->dev.platform_data;
506 LOG("Enter %s\n", __func__);
510 pdata = kzalloc(sizeof(struct rksdmmc_gpio_wifi_moudle), GFP_KERNEL);
514 ret = wlan_platdata_parse_dt(&pdev->dev, pdata);
517 LOG("%s: No platform data specified\n", __func__);
524 rfkill = kzalloc(sizeof(*rfkill), GFP_KERNEL);
526 goto rfkill_alloc_fail;
528 rfkill->pdata = pdata;
531 LOG("%s: init gpio\n", __func__);
533 if (!pdata->mregulator.power_ctrl_by_pmu) {
534 ret = rfkill_rk_setup_gpio(&pdata->power_n, wlan_name, "wlan_poweren");
535 if (ret) goto fail_alloc;
537 ret = rfkill_rk_setup_gpio(&pdata->reset_n, wlan_name, "wlan_reset");
538 if (ret) goto fail_alloc;
541 wake_lock_init(&(rfkill->wlan_irq_wl), WAKE_LOCK_SUSPEND, "rfkill_wlan_wake");
543 // Turn off wifi power as default
544 if (gpio_is_valid(pdata->power_n.io))
546 gpio_direction_output(pdata->power_n.io, !pdata->power_n.enable);
549 #if BCM_STATIC_MEMORY_SUPPORT
550 rockchip_init_wifi_mem();
553 #if defined(CONFIG_HAS_EARLYSUSPEND)
554 register_early_suspend(wlan_early_suspend);
557 LOG("Exit %s\n", __func__);
571 static int rfkill_wlan_remove(struct platform_device *pdev)
573 struct rfkill_wlan_data *rfkill = platform_get_drvdata(pdev);
575 LOG("Enter %s\n", __func__);
577 wake_lock_destroy(&rfkill->wlan_irq_wl);
579 if (gpio_is_valid(rfkill->pdata->power_n.io))
580 gpio_free(rfkill->pdata->power_n.io);
582 if (gpio_is_valid(rfkill->pdata->reset_n.io))
583 gpio_free(rfkill->pdata->reset_n.io);
585 // if (gpio_is_valid(rfkill->pdata->vddio.io))
586 // gpio_free(rfkill->pdata->vddio.io);
588 // if (gpio_is_valid(rfkill->pdata->bgf_int_b.io))
589 // gpio_free(rfkill->pdata->bgf_int_b.io);
591 // if (gpio_is_valid(rfkill->pdata->gps_sync.io))
592 // gpio_free(rfkill->pdata->gps_sync.io);
594 // if (gpio_is_valid(rfkill->pdata->ANTSEL2.io))
595 // gpio_free(rfkill->pdata->ANTSEL2.io);
597 // if (gpio_is_valid(rfkill->pdata->ANTSEL3.io))
598 // gpio_free(rfkill->pdata->ANTSEL3.io);
600 // if (gpio_is_valid(rfkill->pdata->GPS_LAN.io))
601 // gpio_free(rfkill->pdata->GPS_LAN.io);
609 static int rfkill_wlan_suspend(struct platform_device *pdev, pm_message_t state)
611 LOG("Enter %s\n", __func__);
615 static int rfkill_wlan_resume(struct platform_device *pdev)
617 LOG("Enter %s\n", __func__);
622 static struct of_device_id wlan_platdata_of_match[] = {
623 { .compatible = "wlan-platdata" },
626 MODULE_DEVICE_TABLE(of, wlan_platdata_of_match);
629 static struct platform_driver rfkill_wlan_driver = {
630 .probe = rfkill_wlan_probe,
631 .remove = rfkill_wlan_remove,
632 .suspend = rfkill_wlan_suspend,
633 .resume = rfkill_wlan_resume,
635 .name = "wlan-platdata",
636 .owner = THIS_MODULE,
637 .of_match_table = of_match_ptr(wlan_platdata_of_match),
641 static int __init rfkill_wlan_init(void)
643 LOG("Enter %s\n", __func__);
644 return platform_driver_register(&rfkill_wlan_driver);
647 static void __exit rfkill_wlan_exit(void)
649 LOG("Enter %s\n", __func__);
650 platform_driver_unregister(&rfkill_wlan_driver);
653 module_init(rfkill_wlan_init);
654 module_exit(rfkill_wlan_exit);
656 MODULE_DESCRIPTION("rock-chips rfkill for wifi v0.1");
657 MODULE_AUTHOR("gwl@rock-chips.com");
658 MODULE_LICENSE("GPL");