RK3288 Android 10 系统开发[1] - 支持 EC20 4G 模块
根据业务需求，需要升级安卓系统，从 Android6.0 升级到 Android10.0, 本节介绍如何移植 EC20 4G 模块。
主要参考 Quetecl 提供的以下文档。
Quectel_WCDMA<E_Linux_USB_Driver_User_Guide_V1.8.pdfQuectel_Android_RIL_Driver_User_Guide_V1.9.pdf
kernel
内核部分，需要修改两部分，EC20模块的使能和供电, 以及 EC20 联网所需的驱动移植。
EC20 供电使能
针对供电使能问题，dts 中需要添加 EC20 模块的供电接口信息， init-gpios 对应EC20 供电接口， 4g_rst_gpio 对应重置接口，这个可以参考原理图获取。
&pinctrl {
+ //used for init some gpio
+ // GPIO0_B5 : EC20 4G module Power EN (1)
+ // GPIO8_A0 : EEPROM Write protect (0)
+ // GPIO5_C3 : EC20 4G module RF Disable (1)
+ init-gpios = < &gpio0 RK_PB5 GPIO_ACTIVE_LOW>;
+ 4g_rst_gpio = <&gpio5 RK_PB4 GPIO_ACTIVE_HIGH>;
+
backlight {
bl_en: bl-en {
rockchip,pins = <7 2 RK_FUNC_GPIO &pcfg_pull_none>;
除了 dts 的修改外，还需要修改 pinctrl 驱动程序。
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -41,6 +41,7 @@
#include <linux/mfd/syscon.h>
#include <linux/rockchip/cpu.h>
#include <dt-bindings/pinctrl/rockchip.h>
+#include <linux/of_gpio.h>
#include "core.h"
#include "pinconf.h"
@@ -433,6 +434,14 @@ struct rockchip_pmx_func {
u8 ngroups;
};
+/*
+ * porting from android6.0
+ */
+struct gpio_init_config {
+ struct gpio *gpios;
+ int nr_gpios;
+};
+
struct rockchip_pinctrl {
struct regmap *regmap_base;
int reg_size;
@@ -446,6 +455,8 @@ struct rockchip_pinctrl {
unsigned int ngroups;
struct rockchip_pmx_func *functions;
unsigned int nfunctions;
+ /* porting from android6.0 */
+ struct gpio_init_config *config;
};
static struct regmap_config rockchip_regmap_config = {
@@ -4331,6 +4342,45 @@ static int rk3308b_soc_data_init(struct rockchip_pinctrl *info)
return 0;
}
+/*
+ * porting from android6.0
+ */
+static struct gpio_init_config *
+of_get_gpio_init_config(struct device *dev, struct device_node *np)
+{
+ struct gpio_init_config *config;
+ int gpio, i;
+ enum of_gpio_flags flags;
+
+ config = devm_kzalloc(dev,
+ sizeof(struct gpio_init_config),
+ GFP_KERNEL);
+ if (!config)
+ return ERR_PTR(-ENOMEM);
+
+ /* Fetch GPIOs. */
+ config->nr_gpios = of_gpio_named_count(np, "init-gpios");
+
+ config->gpios = devm_kzalloc(dev,
+ sizeof(struct gpio) * config->nr_gpios,
+ GFP_KERNEL);
+ if (!config->gpios)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < config->nr_gpios; i++) {
+ //gpio = of_get_named_gpio(np, "gpios", i);
+ gpio = of_get_named_gpio_flags(np, "init-gpios", i, &flags);
+ if (gpio < 0)
+ break;
+ config->gpios[i].gpio = gpio;
+ config->gpios[i].flags = flags & OF_GPIO_ACTIVE_LOW;
+
+ printk("%s:gpio[%d] = %d, value = %lu\n",__func__, i, gpio, config->gpios[i].flags);
+ }
+
+ return config;
+}
+
static int rockchip_pinctrl_probe(struct platform_device *pdev)
{
struct rockchip_pinctrl *info;
@@ -4339,7 +4389,9 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node, *node;
struct resource *res;
void __iomem *base;
- int ret;
+ int ret, i, gpio;
+ enum of_gpio_flags flags;
+ int gpio_active = 0;
if (!dev->of_node) {
dev_err(dev, "device tree node not found\n");
@@ -4419,6 +4471,41 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev)
return ret;
}
+ /* porting from android6.0 */
+ np = dev->of_node;
+ if (of_find_property(np, "init-gpios", NULL)) {
+ info->config = of_get_gpio_init_config(&pdev->dev, np);
+ if (IS_ERR(info->config))
+ return PTR_ERR(info->config);
+
+ ret = gpio_request_array(info->config->gpios, info->config->nr_gpios);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not obtain init GPIOs: %d\n", ret);
+ return ret;
+ }
+
+ for(i = 0; i < info->config->nr_gpios; i++) {
+ gpio_direction_output(info->config->gpios[i].gpio, info->config->gpios[i].flags);
+ }
+ }
+ // Reset 4G module
+ gpio = of_get_named_gpio_flags(np, "4g_rst_gpio", 0, &flags);
+ if (!gpio_is_valid(gpio)) {
+ dev_err(&pdev->dev, "invalid 4g rst gpio%d\n", gpio);
+ } else {
+ ret = devm_gpio_request(&pdev->dev, gpio, "4g_rst_gpio");
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request GPIO%d for 4g_rst\n", gpio);
+ return ret;
+ }
+ gpio_active = !(flags & OF_GPIO_ACTIVE_LOW);
+ gpio_direction_output(gpio, gpio_active);
+ mdelay(350);
+ gpio_direction_output(gpio, !gpio_active);
+ printk("\n\n!!!!!!!!!!!4G reset!!!!!!!!!!!!!!!!!!!active=%d\n\n", gpio_active);
+ }
+ /* porting end */
+
platform_set_drvdata(pdev, info);
return 0;
以上修改主要是为了使能 EC20模块，同时在开机过程中重置 4G 模块，以保证 4G 模块正常供电。
EC20 驱动移植
EC20 驱动相关文件如下：
drivers/net/usb/qmi_wwan.c
drivers/usb/serial/option.c
drivers/usb/serial/qcserial.c
drivers/usb/serial/usb_wwan.c
EC20 包含以下4种工作模式：
-
USB Serial GobiNetQMI WWANCDC ACM
我们使用的是第一种， USB Serial. 根据参考文档一一修改。
添加 pid vid
首先添加 EC20 模块的 pid, vid, 否则驱动无法识别设备。
drivers/usb/serial/option.c
@@ -573,6 +573,18 @@ static void option_instat_callback(struct urb *urb);
static const struct usb_device_id option_ids[] = {
+#if 1 // Added by Quectel
+ { USB_DEVICE(0x05C6, 0x9090) }, /* Quectel UC15 */
+ { USB_DEVICE(0x05C6, 0x9003) }, /* Quectel UC20 */
+ { USB_DEVICE(0x2C7C, 0x0125) }, /* Quectel EC25 */
+ { USB_DEVICE(0x2C7C, 0x0121) }, /* Quectel EC21 */
+ { USB_DEVICE(0x05C6, 0x9215) }, /* Quectel EC20 */
+ { USB_DEVICE(0x2C7C, 0x0191) }, /* Quectel EG91 */
+ { USB_DEVICE(0x2C7C, 0x0195) }, /* Quectel EG95 */
+ { USB_DEVICE(0x2C7C, 0x0306) }, /* Quectel EG06/EP06/EM06 */
+ { USB_DEVICE(0x2C7C, 0x0296) }, /* Quectel BG96 */
+ { USB_DEVICE(0x2C7C, 0x0435) }, /* Quectel AG35 */
+#endif
{ USB_DEVICE(0x1286, 0x4e3c) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
此外，为了防止与其它设备的id冲突，需要修改以下文件，禁用部分干扰项。
drivers/net/usb/qmi_wwan.c
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1332,7 +1332,8 @@ static const struct usb_device_id products[] = {
{QMI_GOBI_DEVICE(0x05c6, 0x9225)}, /* Sony Gobi 2000 Modem device (N0279, VU730) */
{QMI_GOBI_DEVICE(0x05c6, 0x9245)}, /* Samsung Gobi 2000 Modem device (VL176) */
{QMI_GOBI_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
- {QMI_GOBI_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
+ // Disabled for prevent conflict from quectel EC20 driver
+ //{QMI_GOBI_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
{QMI_FIXED_INTF(0x05c6, 0x9215, 4)}, /* Quectel EC20 Mini PCIe */
{QMI_GOBI_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
{QMI_GOBI_DEVICE(0x05c6, 0x9235)}, /* Top Global Gobi 2000 Modem device (VR306) */
drivers/usb/serial/qcserial.c
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -88,7 +88,8 @@ static const struct usb_device_id id_table[] = {
{USB_DEVICE(0x03f0, 0x241d)}, /* HP Gobi 2000 QDL device (VP412) */
{USB_DEVICE(0x03f0, 0x251d)}, /* HP Gobi 2000 Modem device (VP412) */
{USB_DEVICE(0x05c6, 0x9214)}, /* Acer Gobi 2000 QDL device (VP413) */
- {USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
+ // Disabled for prevent conflict from quectel EC20 driver
+ //{USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */
{USB_DEVICE(0x05c6, 0x9264)}, /* Asus Gobi 2000 QDL device (VR305) */
{USB_DEVICE(0x05c6, 0x9265)}, /* Asus Gobi 2000 Modem device (VR305) */
{USB_DEVICE(0x05c6, 0x9234)}, /* Top Global Gobi 2000 QDL device (VR306) */
启用 reset_resume
启用 reset_resume 是为了防止系统进入挂起或睡眠模式后无法重新唤醒USB设备。
drivers/usb/serial/option.c
@@ -2051,6 +2063,9 @@ static struct usb_serial_driver option_1port_device = {
#ifdef CONFIG_PM
.suspend = usb_wwan_suspend,
.resume = usb_wwan_resume,
+#if 1 // Added by Quectel
+ .reset_resume = usb_wwan_resume,
+#endif
#endif
};
启用 autosuspend remote wakeup
为了支持USB网络的自动挂起与远程唤醒，可以添加以下patch，当然这不是必须的。
@@ -2086,6 +2101,33 @@ static int option_probe(struct usb_serial *serial,
if (device_flags & NUMEP2 && iface_desc->bNumEndpoints != 2)
return -ENODEV;
+#if 1 // Added by Quectel
+ //For USB Auto Suspend and Remote Wakeup
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) &&
+ serial->dev->descriptor.idProduct == cpu_to_le16(0x9090)) {
+ pm_runtime_set_autosuspend_delay(&serial->dev->dev, 3000);
+ usb_enable_autosuspend(serial->dev);
+ device_init_wakeup(&serial->dev->dev, 1); //usb remote wakeup
+ }
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) &&
+ serial->dev->descriptor.idProduct == cpu_to_le16(0x9003)) {
+ pm_runtime_set_autosuspend_delay(&serial->dev->dev, 3000);
+ usb_enable_autosuspend(serial->dev);
+ device_init_wakeup(&serial->dev->dev, 1); //usb remote wakeup
+ }
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) &&
+ serial->dev->descriptor.idProduct == cpu_to_le16(0x9215)) {
+ pm_runtime_set_autosuspend_delay(&serial->dev->dev, 3000);
+ usb_enable_autosuspend(serial->dev);
+ device_init_wakeup(&serial->dev->dev, 1); //usb remote wakeup
+ }
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)) {
+ pm_runtime_set_autosuspend_delay(&serial->dev->dev, 3000);
+ usb_enable_autosuspend(serial->dev);
+ device_init_wakeup(&serial->dev->dev, 1); //usb remote wakeup
+ }
+#endif
+
添加零包机制
drivers/usb/serial/usb_wwan.c
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -509,6 +509,17 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port,
if ((desc->idVendor == cpu_to_le16(0x1286) &&
desc->idProduct == cpu_to_le16(0x4e3c)))
urb->transfer_flags |= URB_ZERO_PACKET;
+#if 1
+ // Added by Quectel for zero packet
+ if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9090))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9003))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9215))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ if (desc->idVendor == cpu_to_le16(0x2C7C))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+#endif
}
return urb;
}
支持usb网络
这一项主要是针对 EC20 的第5个usb interface，EC20 默认会生成 ttyUSB0~ttyUSB3 4个接口，还有一个 interface，可以用于支持 Gobinet 或者 qmi wwan 接口，用以生成 ethx 或者 wwanx 接口。以下patch就是为了防止 USB serial 驱动将该接口用掉。
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -2082,6 +2082,29 @@ static int option_probe(struct usb_serial *serial,
&serial->interface->cur_altsetting->desc;
unsigned long device_flags = id->driver_info;
+ #if 1 //Added by Quectel
+ //Quectel UC20's interface 4 can be used as USB Network device
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) &&
+ serial->dev->descriptor.idProduct == cpu_to_le16(0x9003) &&
+ serial->interface->cur_altsetting->desc.bInterfaceNumber >= 4)
+ return -ENODEV;
+ //Quectel EC20's interface 4 can be used as USB Network device
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) &&
+ serial->dev->descriptor.idProduct == cpu_to_le16(0x9215) &&
+ serial->interface->cur_altsetting->desc.bInterfaceNumber >= 4)
+ return -ENODEV;
+ if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)) {
+ __u16 idProduct = le16_to_cpu(serial->dev->descriptor.idProduct);
+ //Quectel EC200&UC200's interface 0 can be used as USB Network device (ecm, rndis)
+ if (serial->interface->cur_altsetting->desc.bInterfaceClass != 0xFF)
+ return -ENODEV;
+ //Quectel EC25&EC21&EG91&EG95&EG06&EP06&EM06&BG96&AG35&EG12&EG18's interface 4 can be used as USB network device (qmi,ecm,mbim)
+ if ((idProduct != 0x6026 && idProduct != 0x6126) &&
+ serial->interface->cur_altsetting->desc.bInterfaceNumber >= 4)
+ return -ENODEV;
+ }
+ #endif
+
/* Never bind to the CD-Rom emulation interface */
if (iface_desc->bInterfaceClass == USB_CLASS_MASS_STORAGE)
return -ENODEV;
注意：该patch针对使用
USB Serial模式的情况而言并不是必须的，加不加都无所谓。
kernel config
当驱动和供电都没问题后，还需要确保以下功能配置，大部分已经默认支持了
- 启用 ppp 相关配置
- 启用 USB serial 相关配置
需要注意的是，由于 android10 kernel版本 （v4.19.194） 比较新，所以 qmi wwan 驱动已经集成了 EC20 的 pid，vid，所以系统检测到设备会自动加载 qmi_wwan 驱动并自动生成 wwan0 接口，导致无法使用 ppp 拨号上网，为了解决这个问题，需要将 qmi_wwan 驱动禁用。
--- a/arch/arm/configs/rockchip_defconfig
+++ b/arch/arm/configs/rockchip_defconfig
@@ -327,7 +327,7 @@ CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_USB_NET_CX82310_ETH=y
CONFIG_USB_NET_KALMIA=y
-CONFIG_USB_NET_QMI_WWAN=y
+# CONFIG_USB_NET_QMI_WWAN is not set
CONFIG_USB_HSO=y
CONFIG_USB_NET_INT51X1=y
CONFIG_USB_IPHETH=y
至此，kernel 部分的修改就完成了。
android
下面来看看 android 10 除 kernel 外的其它修改。
device/rockchip/rk3288/rk3288_Android10/BoardConfig.mk
device/rockchip/rk3288/rk3288_Android10/EC20/
device/rockchip/rk3288/rk3288_Android10/rk3288_Android10.mk
device/rockchip/rk3288/device.mk
device/rockchip/rk3288/manifest_ab.xml
device/rockchip/common/device.mk
device/rockchip/common/init.rk30board.rc
hardware/ril/reference-ril/Android.mk
hardware/ril/rild/rild.rc
external/ppp/chat/Android.mk
vendor
vendor/rockchip/common/phone/phone.mk
这个目录的文件可改可不改，里面主要定义了 dongle 相关的配置，如果有用到就改。
device
BoardConfig.mk
device/rockchip/rk3288/rk3288_Android10/BoardConfig.mk
在 BoardConfig.mk 中添加 BOARD_HAS_RK_4G_MODEM 配置。
--- a/rk3288_Android10/BoardConfig.mk
+++ b/rk3288_Android10/BoardConfig.mk
@@ -7,6 +7,9 @@ BOARD_GYROSCOPE_SENSOR_SUPPORT := true
BUILD_WITH_GOOGLE_GMS_EXPRESS := false
CAMERA_SUPPORT_AUTOFOCUS:= false
+# enable 4g for ec20
+BOARD_HAS_RK_4G_MODEM := true
+
PRODUCT_KERNEL_CONFIG := rockchip_defconfig android-10.config
# AB image definition
与 BOARD_HAS_RK_4G_MODEM 相关的配置主要有两处。分别配置了需要安装的软件和依赖的 manifest.xml.
# device/rockchip/common/device.mk
ifeq ($(strip $(BOARD_HAS_RK_4G_MODEM)),true)
PRODUCT_PACKAGES += \
CarrierDefaultApp \
CarrierConfig \
rild \
librk-ril \
dhcpcd
# device/rockchip/common/BoardConfig.mk
ifeq ($(strip $(BOARD_HAS_RK_4G_MODEM)),true)
DEVICE_MANIFEST_FILE := device/rockchip/common/4g_modem/manifest.xml
endif
这个 manifest.xml 和后面提到的 manifest_ab.xml 内容差不多，如果使用 4g_modem 目录下，那么下面关于 manifest_ab.xml 的修改就不用管了。
rk3288/device.mk
device/rockchip/rk3288/device.mk
在 device.mk 中更新 rild 参数。
--- a/device.mk
+++ b/device.mk
@@ -128,8 +128,8 @@ PRODUCT_PROPERTY_OVERRIDES += \
ro.ril.ecclist=112,911 \
ro.opengles.version=196610 \
wifi.interface=wlan0 \
- rild.libpath=/system/lib/libril-rk29-dataonly.so \
- rild.libargs=-d /dev/ttyACM0 \
+ rild.libpath=/vendor/lib/libreference-ril.so \
+ rild.libargs=-d /dev/ttyUSB2 \
persist.tegra.nvmmlite = 1 \
ro.audio.monitorOrientation=true \
debug.nfc.fw_download=false \
common/device.mk
device/rockchip/common/device.mk
修改 BOARD_HAS_RK_4G_MODEM 相关的配置，禁用默认的 librk-ril, 并修正 rild 相关参数。
--- a/device.mk
+++ b/device.mk
@@ -202,7 +202,6 @@ PRODUCT_PACKAGES += \
CarrierDefaultApp \
CarrierConfig \
rild \
- librk-ril \
dhcpcd
PRODUCT_PROPERTY_OVERRIDES += \
@@ -218,11 +217,12 @@ PRODUCT_COPY_FILES += \
$(LOCAL_PATH)/4g_modem/lib64/librk-ril.so:$(TARGET_COPY_OUT_VENDOR)/lib64/librk-ril.so
else
PRODUCT_PROPERTY_OVERRIDES += \
- vendor.rild.libpath=/vendor/lib/librk-ril.so
+ vendor.rild.libpath=/vendor/lib/libreference-ril.so \
+ vendor.rild.libargs=-d /dev/ttyUSB2
PRODUCT_COPY_FILES += \
- $(LOCAL_PATH)/4g_modem/bin32/dhcpcd:$(TARGET_COPY_OUT_VENDOR)/bin/dhcpcd \
- $(LOCAL_PATH)/4g_modem/lib32/librk-ril.so:$(TARGET_COPY_OUT_VENDOR)/lib/librk-ril.so
+ $(LOCAL_PATH)/4g_modem/bin32/dhcpcd:$(TARGET_COPY_OUT_VENDOR)/bin/dhcpcd
+ #$(LOCAL_PATH)/4g_modem/lib32/librk-ril.so:$(TARGET_COPY_OUT_VENDOR)/lib/librk-ril.so
endif
endif
注意：为什么前面定义了
rild.libpath,rild.libargs, 这里还要定义vendor.rild.libpath,vendor.rild.libargs, 这是因为rild有两套配置，根据配置PRODUCT_COMPATIBLE_PROPERTY使用这两套配置之一。
init.rk30board.rc
device/rockchip/common/init.rk30board.rc
在 init.rk30board.rc 文件中启动 ril-daemon, 而 ril-daemon 定义位于后续提及的 rild.rc.
--- a/init.rk30board.rc
+++ b/init.rk30board.rc
@@ -259,9 +259,9 @@ on property:persist.internet_adb_enable=0
restart adbd
# for telephony function
-on property:ro.boot.noril=true
- setprop ro.radio.noril true
- stop ril-daemon
+on property:ro.boot.noril=false
+ setprop ro.radio.noril false
+ start ril-daemon
manifest_ab.xml
device/rockchip/rk3288/manifest_ab.xml
在 manifest_ab.xml 或者 manifest.xml 中添加两条 hidl 记录，这是 android 8 及高版本所需的。当然，不改文件，直接使用 4g_modem 目录的也可以。
--- a/manifest_ab.xml
+++ b/manifest_ab.xml
@@ -183,5 +183,23 @@
<instance>default</instance>
</interface>
</hal>
+ <hal format="hidl">
+ <name>android.hardware.radio.deprecated</name>
+ <transport>hwbinder</transport>
+ <version>1.0</version>
+ <interface>
+ <name>IOemHook</name>
+ <instance>slot1</instance>
+ </interface>
+ </hal>
+ <hal format="hidl">
+ <name>android.hardware.radio</name>
+ <transport>hwbinder</transport>
+ <version>1.0</version>
+ <interface>
+ <name>IRadio</name>
+ <instance>slot1</instance>
+ </interface>
+ </hal>
</manifest>
EC20 files
device/rockchip/rk3288/rk3288_Android/EC20/
将 quectel 提供的文件拷贝至以下目录。
$ ls device/rockchip/rk3288/rk3288_Android10/EC20
chat ip-down ip-up libreference-ril.so
device/rockchip/rk3288/rk3288_Android10/rk3288_Android10.mk
在 rk3288_Android10.mk 文件中添加拷贝项 PRODUCT_COPY_FILES , 将前面的4个文件拷贝至指定目录。
--- a/rk3288_Android10/rk3288_Android10.mk
+++ b/rk3288_Android10/rk3288_Android10.mk
@@ -43,6 +43,10 @@ PRODUCT_PACKAGES += \
PRODUCT_COPY_FILES += vendor/rockchip/common/phone/etc/apns-full-conf.xml:system/etc/apns-conf.xml
PRODUCT_COPY_FILES += vendor/rockchip/common/phone/etc/spn-conf.xml:system/etc/spn-conf.xml
PRODUCT_COPY_FILES += ${TARGET_DEVICE_DIR}/user_service.sh:system/bin/user_service.sh
+PRODUCT_COPY_FILES += ${TARGET_DEVICE_DIR}/EC20/chat:system/bin/chat
+PRODUCT_COPY_FILES += ${TARGET_DEVICE_DIR}/EC20/ip-down:system/etc/ppp/ip-down
+PRODUCT_COPY_FILES += ${TARGET_DEVICE_DIR}/EC20/ip-up:system/etc/ppp/ip-up
+PRODUCT_COPY_FILES += ${TARGET_DEVICE_DIR}/EC20/libreference-ril.so:vendor/lib/libreference-ril.so
PRODUCT_PROPERTY_OVERRIDES += \
ro.product.version = 1.0.0 \
ro.product.ota.host = www.rockchip.com:2300 \
sepolicy
添加 sepolicy 权限，这里只是示例，具体情况需要根据日志进行添加。
device/rockchip/common/sepolicy/vendor/file_contexts
--- a/sepolicy/vendor/file_contexts
+++ b/sepolicy/vendor/file_contexts
@@ -1,5 +1,6 @@
/dev/ttyFIQ[0-9]* u:object_r:serial_device:s0
-/dev/ttyUSB[0-9]* u:object_r:tty_device:s0
+/dev/ttyUSB[0-3] u:object_r:radio_device:s0
+/dev/ttyUSB[4-9] u:object_r:tty_device:s0
/dev/mali[0-9] u:object_r:gpu_device:s0
/dev/mali u:object_r:gpu_device:s0
/dev/ddr_freq u:object_r:ddr_device:s0
@@ -193,3 +194,7 @@
#flash_img
/system/bin/flash_img.sh u:object_r:install_recovery_exec:s0
+
+#rild
+/vendor/bin/hw/rild u:object_r:rild_exec:s0
+/dev/socket/rildOemHook u:object_r:rild_socket:s0
hardware
ril
hardware/ril/reference-ril/
由于使用 quectel 提供的 libreference-ril.so, 所以需要禁用 SDK 自带的 reference-ril, 将对应目录下的 Android.mk 重命名即可。
cd hardware/ril/reference-ril
git mv Android.mk Android.mk_bak
rild
hardware/ril/rild/rild.rc
rk3288 android10 的 ril-daemon 定义于 rild.rc 文件中，为了使用 quectel 提供的 libreference-ril.so ，需要修改该文件。
--- a/rild/rild.rc
+++ b/rild/rild.rc
@@ -1,5 +1,5 @@
-service vendor.ril-daemon /vendor/bin/hw/rild
+service ril-daemon /vendor/bin/hw/rild -l /vendor/lib/libreference-ril.so
class main
user radio
- group radio cache inet misc audio log readproc wakelock
+ group radio cache inet misc audio log readproc wakelock sdcard_rw
capabilities BLOCK_SUSPEND NET_ADMIN NET_RAW
external
external/ppp/chat
由于使用 quectel 提供的 chat, 所以需要禁用SDK自带的 chat , 简单将自带 chat 目录的 Android.mk 重命名即可，这样编译时就检索不到了。
cd external/ppp/chat
git mv Android.mk Android.mk_bak
查看信息
系统配置好并烧录后，查看相关信息。
console:/ # ifconfig
ppp0 Link encap:Point-to-Point Protocol
inet addr:10.167.182.79 P-t-P:10.64.64.64 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:20 errors:0 dropped:0 overruns:0 frame:0
TX packets:82 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:1989 TX bytes:5010
console:/ # ping baidu.com
PING baidu.com (220.181.38.148) 56(84) bytes of data.
64 bytes from 220.181.38.148: icmp_seq=1 ttl=45 time=111 ms
64 bytes from 220.181.38.148: icmp_seq=2 ttl=45 time=114 ms
64 bytes from 220.181.38.148: icmp_seq=3 ttl=45 time=117 ms
64 bytes from 220.181.38.148: icmp_seq=4 ttl=45 time=115 ms
console:/ # ls /dev/ttyUSB*
/dev/ttyUSB0 /dev/ttyUSB1 /dev/ttyUSB2 /dev/ttyUSB3
console:/ # dmesg |grep GSM
[ 1.363745] usbserial: USB Serial support registered for GSM modem (1-port)
[ 10.353990] option 3-1.2:1.0: GSM modem (1-port) converter detected
[ 10.354280] usb 3-1.2: GSM modem (1-port) converter now attached to ttyUSB0
[ 10.360191] option 3-1.2:1.1: GSM modem (1-port) converter detected
[ 10.360825] usb 3-1.2: GSM modem (1-port) converter now attached to ttyUSB1
[ 10.362188] option 3-1.2:1.2: GSM modem (1-port) converter detected
[ 10.362542] usb 3-1.2: GSM modem (1-port) converter now attached to ttyUSB2
[ 10.363543] option 3-1.2:1.3: GSM modem (1-port) converter detected
[ 10.364808] usb 3-1.2: GSM modem (1-port) converter now attached to ttyUSB3
console:/ # microcom -s 115200 /dev/ttyUSB2
+CSQ: 23,99
OK
Quectel
EC20F
Revision: EC20CNHDLGR09A06M1G
注意事项
- 如果使用
USB Serial模式，记得禁用qmi_wwan驱动，否则会自动生成wwan0, 且影响 pppd 拨号上网。 - 记得查看
rild中是否有rild.rc，如果有且定义了ril-daemon, 则无需在init.*.rc中定义了 rild.libpath,rild.libargs需要与rild中使用的匹配，如果不确定，vendor.rild.libpath,vendor.rild.libargs也加上。- 在
android10中，需要将libreference-ril.so放置在vendor目录，而非system目录
参考
Quectel_WCDMA<E_Linux_USB_Driver_User_Guide_V1.8.pdfQuectel_Android_RIL_Driver_User_Guide_V1.9.pdf- 4G模块 EC20 R2.0 USB Serial/GobiNet/QMI WWAN 驱动移植过程
- Android 4G上网流程分析
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