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微动态丨6.100ASK_V853-PRO开发板支持MIPI摄像头

2023-05-11 09:55:51 来源:嵌入式Linux那些事

0.前言

​ 100ASK_V853-PRO开发板支持4LINE的MIPI摄像头和2LINE的MIPI摄像头,使用百问网提供的Tina SDK包生成的镜像,系统已经配置好了,可以直接使用。本章介绍如何去适配一个MIPI摄像头,本文所用的2LINE的MIPI摄像头,大家可以在百问网官方淘宝店铺上购买。100ASK_V853-PRO开发板


(资料图片仅供参考)

全志LinuxTina-SDK开发完全手册:https://tina.100ask.net/

如果您想适配自己的摄像头,强烈建议您参照以下开发指南进行操作:

Camera_开发指南:https://tina.100ask.net/SdkModule/Linux_Camera_DevelopmentGuide-01/

1.VIN框架介绍

V853支持并口CSI、MIPI,使用VIN camera驱动框架。

Camera 通路框架

• VIN 支持灵活配置单/双路输入双ISP 多通路输出的规格

• 引入media 框架实现pipeline 管理

• 将libisp 移植到用户空间解决GPL 问题

• 将统计buffer 独立为v4l2 subdev

• 将的scaler(vipp)模块独立为v4l2 subdev

• 将video buffer 修改为mplane 方式,使用户层取图更方便

• 采用v4l2-event 实现事件管理

• 采用v4l2-controls 新特性

VIN 框架

• 使用过程中可简单的看成是vin 模块+ device 模块+af driver + flash 控制模块的方式;

• vin.c 是驱动的主要功能实现,包括注册/注销、参数读取、与v4l2 上层接口、与各device 的下层接口、中断处理、buffer 申请切换等;

• modules/sensor 文件夹里面是各个sensor 的器件层实现,一般包括上下电、初始化,各分辨率切换,yuv sensor 包括绝大部分的v4l2 定义的ioctrl 命令的实

现;而raw sensor 的话大部分ioctrl 命令在vin 层调用isp 库实现,少数如曝光/增益调节会透过vin 层到实际器件层;

• modules/actuator 文件夹内是各种vcm 的驱动;

• modules/flash 文件夹内是闪光灯控制接口实现;

• vin-csi 和vin-mipi 为对csi 接口和mipi 接口的控制文件;

• vin-isp 文件夹为isp 的库操作文件;

• vin-video 文件夹内主要是video 设备操作文件;

驱动路径位于linux-4.9/drivers/media/platform/sunxi-vin 下。

sunxi-vin:│ vin.c ;v4l2驱动实现主体(包含视频接口和ISP部分)│ vin.h ;v4l2驱动头文件│ top_reg.c ;vin对各v4l2 subdev管理接口实现主体│ top_reg.h ;管理接口头文件│ top_reg_i.h ;vin模块接口层部分结构体├── modules│ ├── actuator ;vcm driver│ │ ├── actuator.c│ │ ├── actuator.h│ │ ├── dw9714_act.c│ │ ├── Makefile│ ├── flash ;闪光灯driver│ │ ├── flash.c│ │ └── flash.h│ └── sensor ;sensor driver│ ├── ar0144_mipi.c│ ├── camera_cfg.h ;camera ioctl扩展命令头文件│ ├── camera.h ;camera公用结构体头文件│ ├── Makefile│ ├── ov2775_mipi.c│ ├── ov5640.c│ ├── sensor-compat-ioctl32.c│ ├── sensor_helper.c ;sensor公用操作接口函数文件│ ├── sensor_helper.h├── platform ;平台相关的配置接口├── utility│ ├── bsp_common.c│ ├── bsp_common.h│ ├── cfg_op.c│ ├── cfg_op.h│ ├── config.c│ ├── config.h│ ├── sensor_info.c│ ├── sensor_info.h│ ├── vin_io.h│ ├── vin_os.c│ ├── vin_os.h│ ├── vin_supply.c│ └── vin_supply.h├── vin-cci│ ├── sunxi_cci.c│ └── sunxi_cci.h├── vin-csi│ ├── parser_reg.c│ ├── parser_reg.h│ ├── parser_reg_i.h│ ├── sunxi_csi.c│ └── sunxi_csi.h├── vin-isp│ ├── sunxi_isp.c│ └── sunxi_isp.h├── vin-mipi│ ├── sunxi_mipi.c│ └── sunxi_mipi.h├── vin-stat│ ├── vin_h3a.c│ ├── vin_h3a.h│ ├── vin_ispstat.c│ └── vin_ispstat.h├── vin_test├── vin-video│ ├── vin_core.c│ ├── vin_core.h│ ├── vin_video.c│ └── vin_video.h└── vin-vipp├── sunxi_scaler.c├── sunxi_scaler.h├── vipp_reg.c├── vipp_reg.h└── vipp_reg_i.h

2.驱动配置

​ 100ASK_V853-PRO开发板支持4LINE双摄镜头模组和2LINE单摄镜头模组,下面我仅演示2LINE的MIPI摄像头如何进行配置。我们使用的是GC2053摄像头,使用的是全志已经内置的驱动程序,路径为:

kernel/linux-4.9/drivers/media/platform/sunxi-vin/modules/sensor/gc2053_mipi.c

3.设备树配置

设备树配置路径:

device/config/chips/v853/configs/100ask/board.dts

camera相关配置:

vind0:vind@0 {                        vind0_clk = <300000000>;                        status = "okay";                        csi2:csi@2 {                                pinctrl-names = "default","sleep";                                pinctrl-0 = <&ncsi_pins_a>;                                pinctrl-1 = <&ncsi_pins_b>;                                status = "okay";                        };                        /*Online mode tp9953 uses online mode*/                        tdm0:tdm@0 {                                work_mode = <0>;                        };                        isp00:isp@0 {                                work_mode = <0>;                        };                        scaler00:scaler@0 {                                work_mode = <0>;                        };                        scaler10:scaler@4 {                                work_mode = <0>;                        };                        scaler20:scaler@8 {                                work_mode = <0>;                        };                        scaler30:scaler@12 {                                work_mode = <0>;                        };                        actuator0:actuator@0 {                                device_type = "actuator0";                                actuator0_name = "ad5820_act";                                actuator0_slave = <0x18>;                                actuator0_af_pwdn = <>;                                actuator0_afvdd = "afvcc-csi";                                actuator0_afvdd_vol = <2800000>;                                status = "disabled";                        };                        flash0:flash@0 {                                device_type = "flash0";                                flash0_type = <2>;                                flash0_en = <>;                                flash0_mode = <>;                                flash0_flvdd = "";                                flash0_flvdd_vol = <>;                                status = "disabled";                        };                        sensor0:sensor@0 {                                device_type = "sensor0";                                sensor0_mname = "gc2053_mipi";                                sensor0_twi_cci_id = <1>;                                sensor0_twi_addr = <0x6e>;                                sensor0_mclk_id = <0>;                                sensor0_pos = "rear";                                sensor0_isp_used = <1>;                                sensor0_fmt = <1>;                                sensor0_stby_mode = <0>;                                sensor0_vflip = <0>;                                sensor0_hflip = <0>;                                sensor0_iovdd-supply = <®_aldo2>;                                sensor0_iovdd_vol = <1800000>;                                sensor0_avdd-supply = <®_bldo2>;                                sensor0_avdd_vol = <2800000>;                                sensor0_dvdd-supply = <®_dldo2>;                                sensor0_dvdd_vol = <1200000>;                                sensor0_power_en = <>;                                sensor0_reset = <&pio PA 18 1 0 1 0>;                                sensor0_pwdn = <&pio PA 19 1 0 1 0>;                                sensor0_sm_hs = <>;                                sensor0_sm_vs = <>;                                flash_handle = <&flash0>;                                act_handle = <&actuator0>;                                status  = "okay";                        };                        sensor1:sensor@1 {                                device_type = "sensor1";                                sensor1_mname = "tp9953";                                sensor1_twi_cci_id = <0>;                                sensor1_twi_addr = <0x88>;                                sensor1_mclk_id = <2>;                                sensor1_pos = "front";                                sensor1_isp_used = <0>;                                sensor1_fmt = <0>;                                sensor1_stby_mode = <0>;                                sensor1_vflip = <0>;                                sensor1_hflip = <0>;                                sensor1_iovdd-supply = <®_aldo2>;                                sensor1_iovdd_vol = <1800000>;                                sensor1_avdd-supply = <>; /*<®_dcdc1>;*/                                sensor1_avdd_vol = <3300000>;                                sensor1_dvdd-supply = <>;//<®_dldo2>;                                sensor1_dvdd_vol = <1200000>;                                sensor1_power_en = <&pio PI 0 1 0 1 0>;                                sensor1_reset = <&pio PH 13 1 0 1 0>;                                sensor1_pwdn  = <>;                                /*sensor1_pwdn = <&pio PE 13 1 0 1 0>;*/                                sensor1_sm_hs = <>;                                sensor1_sm_vs = <>;                                flash_handle = <>;                                act_handle = <>;                                status  = "okay";                        };

4.内核配置

在Tina根目录下执行make kernel_menuconfig

book@100ask:~/workspaces/tina-v853-open$ make kernel_menuconfig

注意:在进行内核配置前需要配置环境变量才可以进入内核调试,即在配置前输入

book@100ask:~/workspaces/tina-v853-open$ source build/envsetup.sh...book@100ask:~/workspaces/tina-v853-open$ lunch... 输入1,选择方案1

在内核配置界面中,进入如下目录,输入M选中下面两项。

→ Device Drivers → Multimedia support → V4L platform devices   sunxi video input (camera csi/mipi isp vipp)driver     v4l2 new driver for SUNXI

可以看到全志已经支持了很多摄像头,找到我们需要适配的摄像头,输入M将gc2053驱动编为模块。

→ Device Drivers → Multimedia support → V4L platform devices → sensor driver select use gc2053_mipi driver

注意:如果出现没有的路径,需要选择上一级目录才会打开。

5.Tina配置

在Tina根目录下输入make menuconfig,进入如下目录

> Kernel modules  > Video Support <*> kmod-vin-v4l2.............................. Video input support (staging)

如下图所示

6.modules.mk配置

modules.mk主要完成两个方面:

拷贝相关的ko模块到小机rootfs中rootfs启动时,按顺序自动加载相关的ko模块。

modules.mk文件路径:

tina-v853-open/openwrt/target/v853/v853-100ask/modules.mk

驱动加载顺序配置

define KernelPackage/vin-v4l2   SUBMENU:=$(VIDEO_MENU)   TITLE:=Video input support (staging)   DEPENDS:=   FILES:=$(LINUX_DIR)/drivers/media/v4l2-core/videobuf2-core.ko   FILES+=$(LINUX_DIR)/drivers/media/v4l2-core/videobuf2-dma-contig.ko   FILES+=$(LINUX_DIR)/drivers/media/v4l2-core/videobuf2-memops.ko   FILES+=$(LINUX_DIR)/drivers/media/v4l2-core/videobuf2-v4l2.ko   FILES+=$(LINUX_DIR)/drivers/media/platform/sunxi-vin/vin_io.ko   FILES+=$(LINUX_DIR)/drivers/media/platform/sunxi-vin/modules/sensor/gc2053_mipi.ko #  FILES+=$(LINUX_DIR)/drivers/media/platform/sunxi-vin/modules/sensor_power/sensor_power.ko   FILES+=$(LINUX_DIR)/drivers/media/platform/sunxi-vin/vin_v4l2.ko   FILES+=$(LINUX_DIR)/drivers/input/sensor/da380/da380.ko   AUTOLOAD:=$(call AutoProbe,videobuf2-core videobuf2-dma-contig videobuf2-memops videobuf2-v4l2 vin_io gc2053_mipi vin_v4l2 da380.ko) endef define KernelPackage/vin-v4l2/description  Kernel modules for video input support endef $(eval $(call KernelPackage,vin-v4l2))

7.S00mpp配置

V853平台在完成modules.mk配置后,还需要完成.ko挂载脚本S00mpp的配置,以便开机快速启动摄像头模块。

S00mpp配置路径:

tina-v853-open/openwrt/target/v853/v853-100ask/busybox-init-base-files/etc/init.d/S00mpp

脚本对摄像头驱动进行了提前加载,应用需要使用的时候即可快速配置并启动。

#!/bin/sh## Load mpp modules....#MODULES_DIR="/lib/modules/`uname -r`"start() {    printf "Load mpp modulesn"    insmod $MODULES_DIR/videobuf2-core.ko    insmod $MODULES_DIR/videobuf2-memops.ko    insmod $MODULES_DIR/videobuf2-dma-contig.ko    insmod $MODULES_DIR/videobuf2-v4l2.ko    insmod $MODULES_DIR/vin_io.ko#   insmod $MODULES_DIR/sensor_power.ko    insmod $MODULES_DIR/gc4663_mipi.ko    insmod $MODULES_DIR/vin_v4l2.ko    insmod $MODULES_DIR/sunxi_aio.ko    insmod $MODULES_DIR/sunxi_eise.ko#   insmod $MODULES_DIR/vipcore.ko}stop() {    printf "Unload mpp modulesn"#   rmmod $MODULES_DIR/vipcore.ko    rmmod $MODULES_DIR/sunxi_eise.ko    rmmod $MODULES_DIR/sunxi_aio.ko    rmmod $MODULES_DIR/vin_v4l2.ko    rmmod $MODULES_DIR/gc4663_mipi.ko#   rmmod $MODULES_DIR/sensor_power.ko    rmmod $MODULES_DIR/vin_io.ko    rmmod $MODULES_DIR/videobuf2-v4l2.ko    rmmod $MODULES_DIR/videobuf2-dma-contig.ko    rmmod $MODULES_DIR/videobuf2-memops.ko    rmmod $MODULES_DIR/videobuf2-core.ko}case "$1" in    start)    start    ;;    stop)    stop    ;;    restart|reload)    stop    start    ;;  *)    echo "Usage: $0 {start|stop|restart}"    exit 1esacexit $?

8.增加摄像头测试程序

在Tina根目录下执行make menuconfig,进入Tina配置界面后,进入如下目录,输入Y选中camerademo测试程序。

> Allwinner > Vision<*> camerademo........................................ camerademo test sensor  ---> 

9.编译烧写镜像

在Tina的根目录下,输入make -j32

book@100ask:~/workspaces/tina-v853-open$ make -j32...book@100ask:~/workspaces/tina-v853-open$ pack...

​ 生成镜像后,将tina-v853-open/out/v853/100ask/openwrt/目录下的v853_linux_100ask_uart0.img镜像拷贝到Windows电脑主机中,使用全志PhoenixSuit烧写工具烧写到开发板上。

​ 上电前需要连接插上12V的电源线,和两条Type-C,把开关拨向电源接口方向上电,烧写新镜像后等待启动系统,在命令行中输入lsmod

root@TinaLinux:/# lsmod Module                  Size  Used byvin_v4l2              181099  0 gc2053_mipi             8567  0 vin_io                 21106  3 vin_v4l2,gc2053_mipivideobuf2_v4l2          9304  1 vin_v4l2videobuf2_dma_contig     8632  1 vin_v4l2videobuf2_memops         948  1 videobuf2_dma_contigvideobuf2_core         22168  2 vin_v4l2,videobuf2_v4l2xradio_wlan              598  0 xradio_core           431911  1 xradio_wlanxradio_mac            222724  1 xradio_core

可以看到我们之前选中的VIN驱动和GC2053驱动已经装载进去了

10.运行camera测试程序

在开发板的串口终端界面输入camedemo -h可以输出camera测试程序的使用教程

root@TinaLinux:/# camerademo -h[CAMERA]**********************************************************[CAMERA]*                                                        *[CAMERA]*              this is camera test.                      *[CAMERA]*                                                        *[CAMERA]**********************************************************[CAMERA]******************** camerademo help *********************[CAMERA] This programis a test camera.[CAMERA] It will query the sensor to support the resolution, output format and test frame rate.[CAMERA] At the same time you canmodify the data to save the path and get the number of photos.[CAMERA] When the last parameter is debug, the output will be more detailed information[CAMERA] There are eight ways to run:[CAMERA]    1.camerademo --- use the default parameters.[CAMERA]    2.camerademo debug --- use the default parameters and output debug information.[CAMERA]    3.camerademo setting --- can choose the resolution and data format.[CAMERA]    4.camerademo setting debug --- setting and output debug information.[CAMERA]    5.camerademo NV21 640 480 30 bmp /tmp 5 --- param input mode,can save bmp or yuv.[CAMERA]    6.camerademo NV21 640 480 30 bmp /tmp 5 debug --- output debug information.[CAMERA]    7.camerademo NV21 640 480 30 bmp /tmp 5 Num --- /dev/videoNum param input mode,can save bmp or yuv.[CAMERA]    8.camerademo NV21 640 480 30 bmp /tmp 5 Num debug --- /dev/videoNum output debug information.[CAMERA]    8.camerademo NV21 640 480 30 bmp /tmp 5 Num 1 --- 1/2: chose memory: V4L2_MEMORY_MMAP/USERPTR[CAMERA]**********************************************************

在开发板的串口终端界面输入camerademo NV21 640 480 30 bmp /tmp 5,将会拍摄5张照片放在/tmp目录下,将/tmp目录下的文件拷贝到电脑端即可查看相应的图片。

具体教程可以参考:https://tina.100ask.net/SdkModule/Linux_Camera_DevelopmentGuide-06/

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