RK3288怎么添加WiFi和BT模块AP6212

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CPU：RK3288

系统：Android 5.1

注：系统中自带的模块没有AP6212，相近的只有AP6210，设置为AP6210，直接添加固件也可以正常使用。

此文是手动添加AP6212的例程。

1、在设备树中修改 wifi 芯片为 ap6212，

kernel/arch/arm/boot/dts/rk3288-tb_8846.dts

diff --git a/kernel/arch/arm/boot/dts/rk3288-tb_8846.dts b/kernel/arch/arm/boot/dts/rk3288-tb_8846.dtsindex 6a65163..aa5480d 100755--- a/kernel/arch/arm/boot/dts/rk3288-tb_8846.dts+++ b/kernel/arch/arm/boot/dts/rk3288-tb_8846.dts@@ -42,7 +42,7 @@                  * rtl8188eu, rtl8723bs, rtl8723bu                  * esp8089                */-               wifi_chip_type = "ap6330";+               wifi_chip_type = "ap6212";          sdio_vref = <1800>; //1800mv or 3300mv

2、在 Kconfig 文件中增加 AP6212 选项。

/kernel/drivers/net/wireless/Kconfig

diff --git a/kernel/drivers/net/wireless/Kconfig b/kernel/drivers/net/wireless/Kconfigindex 544aa86..3e1026d 100755--- a/kernel/drivers/net/wireless/Kconfig+++ b/kernel/drivers/net/wireless/Kconfig@@ -84,6 +84,10 @@ choice        config AP6210                bool "AP6210"                depends on RKWIFI+               +       config AP6212+               bool "AP6212"+               depends on RKWIFI         config AP6234                bool "AP6234"

3、在配置文件 rockchip_defconfig 中屏蔽旧 wifi 芯片，增加新的 wifi 芯片

kernel/arch/arm/configs/rockchip_defconfig

diff --git a/kernel/arch/arm/configs/rockchip_defconfig b/kernel/arch/arm/configs/rockchip_defconfigindex e7c697a..5199ec0 100755--- a/kernel/arch/arm/configs/rockchip_defconfig+++ b/kernel/arch/arm/configs/rockchip_defconfig@@ -299,7 +299,7 @@ CONFIG_USB_SIERRA_NET=y CONFIG_RTL8188EU=y CONFIG_ESP8089=y CONFIG_RKWIFI=y-CONFIG_AP6335=y+# CONFIG_AP6335 is not set+CONFIG_AP6212=y # CONFIG_INPUT_MOUSEDEV is not set CONFIG_INPUT_EVDEV=y CONFIG_INPUT_KEYRESET=y

4、此时串口打印中会出现打开文件 fw_bcm43438a1.bin 失败，需要更新 wifi 模块固件。

[   18.686420] dhdsdio_download_code_file: Open firmware file failed /system/etc/firmware/fw_bcm43438a1.bin[   18.686430] _dhdsdio_download_firmware: dongle image file download failed

WiFI 固件路径：/external/wlan_loader/firmware

将模块供应商提供的固件文件拷贝到此目录下，然后编译烧录。

external/wlan_loader/firmware/fw_bcm43438a1.binexternal/wlan_loader/firmware/fw_bcm43438a1_apsta.binexternal/wlan_loader/firmware/fw_bcm43438a1_p2p.binexternal/wlan_loader/firmware/nvram_ap6212.txt

编译后，系统会将模块固件拷贝到 out/target/product/rk3288/system/etc//firmware/ 目录下

如果只是调试，可以通过 adb 将固件 push 到 /system/etc//firmware/ 目录下，然后重启。

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

wifi 驱动路径：kernel/net/rfkill/rfkill-wlan.c

如果器件升级，比如器件为AP6212A，供应商给的文件问 nvram_ap6212a.txt，则需要修改下面文件。（直接用以前的 nvram_ap6212.txt 也可以用，但文件不一样，不清楚）

路径：\kernel\drivers\net\wireless\rockchip_wlan\rkwifi\bcmdhd\dhd_config.c

diff --git a/kernel/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/dhd_config.c b/kernel/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/dhd_config.cindex 39641e1..91d7925 100755--- a/kernel/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/dhd_config.c+++ b/kernel/drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/dhd_config.c@@ -477,7 +477,7 @@ dhd_conf_set_fw_name_by_chip(dhd_pub_t *dhd, char *fw_path, char *nv_path)                                strcpy(&fw_path[i+1], bcm43438a0_fw_name[fw_type]);                        else if (chiprev == BCM43430A1_CHIP_REV)                                strcpy(&fw_path[i+1], bcm43438a1_fw_name[fw_type]);-                       strcpy(&nv_path[j+1], "nvram_ap6212.txt");+                       strcpy(&nv_path[j+1], "nvram_ap6212a.txt");break;                case BCM43340_CHIP_ID:                        if (chiprev == BCM43340B0_CHIP_REV)

5、BT 驱动中增添代码，支持 AP6212

BT 驱动路径：kernel/net/rfkill/rfkill-bt.c

diff --git a/kernel/net/rfkill/rfkill-bt.c b/kernel/net/rfkill/rfkill-bt.cindex a1a156c..3070080 100755--- a/kernel/net/rfkill/rfkill-bt.c+++ b/kernel/net/rfkill/rfkill-bt.c@@ -95,6 +95,8 @@ static const char bt_name[] =     #else         "ap6210_24M"     #endif+#elif defined(CONFIG_AP6212)+               "ap6212" #elif defined(CONFIG_AP6330)                "ap6330" #elif defined(CONFIG_AP6476)@@ -266,7 +268,7 @@ static int rfkill_rk_set_power(void *data, bool blocked)        struct rfkill_rk_data *rfkill = data;     struct rfkill_rk_gpio *poweron = &rfkill->pdata->poweron_gpio;     struct rfkill_rk_gpio *reset = &rfkill->pdata->reset_gpio;-#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335)+#if defined(CONFIG_AP6210) || defined(CONFIG_AP6212) || defined(CONFIG_AP6335)     struct rfkill_rk_gpio* rts = &rfkill->pdata->rts_gpio;     struct pinctrl *pinctrl = rfkill->pdata->pinctrl; #endif@@ -307,7 +309,7 @@ static int rfkill_rk_set_power(void *data, bool blocked)             msleep(20);                        gpio_direction_output(reset->io, reset->enable);         }-#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335)+#if defined(CONFIG_AP6210) || defined(CONFIG_AP6212) || defined(CONFIG_AP6335)         if (pinctrl != NULL && gpio_is_valid(rts->io))         {             pinctrl_select_state(pinctrl, rts->gpio_state);

到此 AP6212 就可以正常使用了，但是不知道供应商提供的 BT 固件应该拷贝到哪里。

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