[RK3288 Android7.1.2 ]新增wifi模块ap6256

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我是靠谱客的博主悦耳中心，最近开发中收集的这篇文章主要介绍[RK3288 Android7.1.2 ]新增wifi模块ap6256，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

Platform: ROCKCHIP
Chip: RK3288
OS: Android7.1.2
Kernel: 4.4.143

背景

旧板wifi模块ap6235，硬件将wifi模块替换成ap6256,未改代码情况下，wifi不能用，设备打印如下
在这里插入图片描述

代码修改

1.新增固件：wifi在externawlan_loaderfirmware
在这里插入图片描述
蓝牙固件在：vendorrockchipcommonbluetoothlibfirmware

3.代码补丁
a.kernel/arch/arm/boot/dts/rk3288-evb.dtsi

     wireless-wlan {
         compatible = "wlan-platdata";
         rockchip,grf = <&grf>;
-        wifi_chip_type = "ap6235";
+        wifi_chip_type = "ap6256";
         sdio_vref = <1800>;
         WIFI,host_wake_irq = <&gpio4 30 GPIO_ACTIVE_HIGH>;
         status = "okay";

b.kernel/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/dhd_config.h

dhd_slpauto;
#endif
#define BCM4356A2_CHIP_REV      2
#define BCM4358A3_CHIP_REV      3
+#define BCM43456C5_CHIP_REV     9
typedef struct wl_mac_range {

c.kernel/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/dhd_config.c

dhd_conf_set_fw_name_by_chip(dhd_pub_t *dhd, char *fw_path, char *nv_path)
        case BCM4345_CHIP_ID:
        case BCM43454_CHIP_ID:
            if (chiprev == BCM43455C0_CHIP_REV) {
                strcpy(&fw_path[i+1], FW_BCM43455C0);
                strcpy(&nv_path[j + 1], "nvram_ap6255.txt");
            } else if (chiprev == BCM43456C5_CHIP_REV) {
                strcpy(&fw_path[i+1], FW_BCM43456C5);
+                strcpy(&nv_path[j + 1], "nvram_ap6256.txt");
            }
            break;

d.kernel/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c

if (chip == WIFI_AP6255) {
     sprintf(fw, "%s%s", ANDROID_FW_PATH, "fw_bcm43455c0_ag.bin");
     sprintf(nvram, "%s%s", ANDROID_FW_PATH, "nvram_ap6255.txt");
}
+
+if (chip == WIFI_AP6256) {
+    sprintf(fw, "%s%s", ANDROID_FW_PATH, "fw_bcm43456c5_ag.bin");
+    sprintf(nvram, "%s%s", ANDROID_FW_PATH, "nvram_ap6256.txt");
+}
+

e.kernel/include/linux/rfkill-wlan.h

     WIFI_AP6212,
     WIFI_AP6234,
     WIFI_AP6255,
+    WIFI_AP6256,
     WIFI_AP6330,
     WIFI_AP6335,
     WIFI_AP6354,

f.kernel/net/rfkill/rfkill-wlan.c

get_wifi_chip_type(void)
     type = WIFI_AP6234;
     } else if (strcmp(wifi_chip_type_string, "ap6255") == 0) {
     type = WIFI_AP6255;
+    } else if (strcmp(wifi_chip_type_string, "ap6256") == 0) {
+    type = WIFI_AP6256;