Android源码之单双摄像头修改

客制化需求中经常有要改成单摄像或者又要改回双摄像的。这篇博客总结一下关于单双摄像头的修改。关于单双摄像头需要修改下面三个地方：
<一>

device\sprd\scx35\sp7731g_1h10\BoardConfig.mk 源码如下

#
# Copyright (C) 2011 The Android Open-Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

# secure boot
BOARD_SECURE_BOOT_ENABLE := false
SECURE_BOOT_SIGNAL_KEY := false
include $(PLATCOMM)/BoardConfigCommon.mk
include $(PLATCOMM)/emmc/BoardConfigEmmc.mk

# board configs
TARGET_BOOTLOADER_BOARD_NAME := sp7731gea_hdr

# select camera 2M,3M,5M,8M
CAMERA_SUPPORT_SIZE := 5M
FRONT_CAMERA_SUPPORT_SIZE := 0P3M
TARGET_BOARD_NO_FRONT_SENSOR := false
TARGET_BOARD_CAMERA_FLASH_CTRL := false

CAMERA_PHYSICAL_SIZE := 1_3inch
FRONT_CAMERA_PHYSICAL_SIZE := 1_5inch
# camera sensor type
CAMERA_SENSOR_TYPE_BACK := "ov8825_mipi_raw"
CAMERA_SENSOR_TYPE_FRONT := "GC2155_MIPI_yuv"
AT_CAMERA_SENSOR_TYPE_BACK := "autotest_ov8825_mipi_raw"
AT_CAMERA_SENSOR_TYPE_FRONT := "autotest_GC2155_MIPI_yuv"
#face detect
TARGET_BOARD_CAMERA_FACE_DETECT := true
TARGET_BOARD_CAMERA_FD_LIB := omron

#hdr capture
TARGET_BOARD_CAMERA_HDR_CAPTURE := true

#full screen display
TARGET_BOARD_CAMERA_FULL_SCREEN_DISPLAY := true

#uv denoise
TARGET_BOARD_CAMERA_UV_DENOISE := true

#capture mem
TARGET_BOARD_LOW_CAPTURE_MEM := true

#snesor interface
TARGET_BOARD_BACK_CAMERA_INTERFACE := mipi
TARGET_BOARD_FRONT_CAMERA_INTERFACE := mipi

#select camera zsl cap mode
TARGET_BOARD_CAMERA_CAPTURE_MODE := false

#sprd zsl feature
TARGET_BOARD_CAMERA_SPRD_PRIVATE_ZSL := true

#rotation capture
TARGET_BOARD_CAMERA_ROTATION_CAPTURE := true
ifeq ($(strip $(ZEDIEL_PROJECT_CONFIG)), $(filter $(ZEDIEL_PROJECT_CONFIG), ZEDIEL_SI706AKA ZEDIEL_SI706ASB))
TARGET_BOARD_BACK_CAMERA_ROTATION := true
TARGET_BOARD_FRONT_CAMERA_ROTATION := true
endif
#rm zoom from 1080p recording
TARGET_BOARD_DISABLE_1080P_RECORDING_ZOOM := true

#select continuous auto focus
TARGET_BOARD_CAMERA_CAF := true

#select no camera flash
#TARGET_BOARD_CAMERA_NO_FLASH_DEV := true

#image angle in different project
#TARGET_BOARD_CAMERA_ADAPTER_IMAGE := 180

#pre_allocate capture memory
TARGET_BOARD_CAMERA_PRE_ALLOC_CAPTURE_MEM := false
#sc8830g isp ver 0;sc9630 isp ver 1
TARGET_BOARD_CAMERA_ISP_SOFTWARE_VERSION := 0

#select mipi d-phy mode(none, phya, phyb, phyab)
TARGET_BOARD_FRONT_CAMERA_MIPI := phyb
TARGET_BOARD_BACK_CAMERA_MIPI := phya

#select ccir pclk src(source0, source1)
TARGET_BOARD_FRONT_CAMERA_CCIR_PCLK := source0
TARGET_BOARD_BACK_CAMERA_CCIR_PCLK := source0

# select WCN
BOARD_HAVE_BLUETOOTH := true
ifeq ($(strip $(USE_SPRD_WCN)),true)
BOARD_SPRD_WCNBT_SR2351 := true
BOARD_HAVE_FM_TROUT := true
BOARD_USE_SPRD_FMAPP := true
endif

#2351 GPS
BOARD_USE_SPRD_4IN1_GPS := true

# WIFI configs
BOARD_WPA_SUPPLICANT_DRIVER := NL80211
WPA_SUPPLICANT_VERSION      := VER_2_1_DEVEL
BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_sprdwl
BOARD_HOSTAPD_DRIVER        := NL80211
BOARD_HOSTAPD_PRIVATE_LIB   := lib_driver_cmd_sprdwl
BOARD_WLAN_DEVICE           := sc2351
WIFI_DRIVER_FW_PATH_PARAM   := "/data/misc/wifi/fwpath"
WIFI_DRIVER_FW_PATH_STA     := "sta_mode"
WIFI_DRIVER_FW_PATH_P2P     := "p2p_mode"
WIFI_DRIVER_FW_PATH_AP      := "ap_mode"
WIFI_DRIVER_MODULE_PATH     := "/system/lib/modules/sprdwl.ko"
WIFI_DRIVER_MODULE_NAME     := "sprdwl"

# select sensor
#USE_INVENSENSE_LIB := true
USE_SPRD_SENSOR_LIB := true
# BOARD_HAVE_ACC := mxc622x
# BOARD_HAVE_ACC := mc3xxx
# BOARD_HAVE_ACC := stk8baxx
BOARD_HAVE_ACC := compatible
BOARD_ACC_INSTALL := 6
BOARD_HAVE_ORI := NULL
BOARD_ORI_INSTALL := NULL
# BOARD_HAVE_PLS := stk3x1x
BOARD_HAVE_PLS := gsl1680
#BOARD_HAVE_PLS := NULL

# ext4 partition layout
TARGET_USERIMAGES_USE_EXT4 := true
BOARD_CACHEIMAGE_PARTITION_SIZE := 150000000
BOARD_PRODNVIMAGE_PARTITION_SIZE := 5242880
BOARD_SYSINFOIMAGE_PARTITION_SIZE := 5242880
BOARD_PERSISTIMAGE_PARTITION_SIZE := 2097152
BOARD_FLASH_BLOCK_SIZE := 4096
BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
BOARD_PRODNVIMAGE_FILE_SYSTEM_TYPE := ext4
BOARD_SYSINFOIMAGE_FILE_SYSTEM_TYPE := ext4

TARGET_SYSTEMIMAGES_SPARSE_EXT_DISABLED := true
TARGET_USERIMAGES_SPARSE_EXT_DISABLED := false
TARGET_CACHEIMAGES_SPARSE_EXT_DISABLED := false
TARGET_PRODNVIMAGES_SPARSE_EXT_DISABLED := true
TARGET_SYSINFOIMAGES_SPARSE_EXT_DISABLED := true

PRODUCT_COPY_FILES += $(BOARDDIR)/SC7730_UMS.xml:$(PRODUCT_OUT)/SC7730_UMS.xml

TARGET_GPU_USE_TILE_ALIGN := true
DEVICE_GSP_NOT_SCALING_UP_TWICE := true

#TARGET_USES_LOGD := false

# powerhint HAL config
# sprdemand, interhotplug, interpowerdown
BOARD_POWERHINT_HAL := sprdemand

在这个文件中第一点：

TARGET_BOARD_NO_FRONT_SENSOR := false
如果为false代表机器有双摄像头，如果为true代表只有后置摄像头没有前置摄像头。

#select mipi d-phy mode(none, phya, phyb, phyab)
TARGET_BOARD_FRONT_CAMERA_MIPI := phyb
TARGET_BOARD_BACK_CAMERA_MIPI := phya
这里面对应的是前后摄像头处理的寄存器。双摄像头情况下前摄FRONT对应得是phyb,后摄BACK对应的是phya，如果要改成单摄像头，单后摄的话不用做修改，单前摄的话把前摄的处理屏蔽，后摄改成phyb。这里面要解释下硬件上处理单摄像头都是用后摄摄像头的配置。

<三>

kernel\arch\arm\boot\dts\sprd-scx35_sp7731gea_hdr.dts
文件中 gpio角如下
 sprd_sensor {
         compatible  = "sprd,sprd_sensor";
         reg = <0x60c00000 0x1000>;
         gpios = <&d_gpio_gpio 186 0    /* 0: main reset*/
                 &d_gpio_gpio 188 0    /* 1: main powerdown*/前摄
                 &d_gpio_gpio 186 0    /* 2:sub reset*/
                 &d_gpio_gpio 187 0    /* 3:sub powerdown*/后摄
                 &d_gpio_gpio 0 0     /* 4:main core voltage*/

如果是双摄像头的话就是上面这种配置，如果是单摄的话将后摄和前摄的gpio角对换，

sprd_sensor {
         compatible  = "sprd,sprd_sensor";
         reg = <0x60c00000 0x1000>;
         gpios = <&d_gpio_gpio 186 0    /* 0: main reset*/
                 &d_gpio_gpio 187 0    /* 1: main powerdown*/前摄
                 &d_gpio_gpio 186 0    /* 2:sub reset*/
                 &d_gpio_gpio 188 0    /* 3:sub powerdown*/后摄
                 &d_gpio_gpio 0 0     /* 4:main core voltage*/

以上是单双摄像头需要修改的地方。另外需要在

vendor\sprd\modules\libcamera\oem\src\sensor_cfg.c

const SENSOR_MATCH_T main_sensor_infor_tab[]=
{
#ifdef CONFIG_BACK_CAMERA_MIPI
#if defined(CONFIG_CAMERA_ISP_VERSION_V3) || defined(CONFIG_CAMERA_ISP_VERSION_V4)
//
    {"s5k3l2xx_mipi", &g_s5k3l2xx_mipi_raw_info},
    {"s5k4h5yc_mipi", &g_s5k4h5yc_mipi_raw_info},
    {"s5k4h5yc_mipi", &g_s5k4h5yc_jsl_mipi_raw_info},
    {"ov8825_mipi_raw", &g_ov8825_mipi_raw_info},
    {"hi544_mipi_raw", &g_hi544_mipi_raw_info},
    {"ov5640_mipi_yuv", &g_ov5640_mipi_yuv_info},
    {"ov5640_mipi_raw", &g_ov5640_mipi_raw_info},
    {"ov5670_mipi_raw", &g_ov5670_mipi_raw_info},
    {"ov13850_mipi_raw", &g_ov13850_mipi_raw_info},
    {"ov8858_mipi_raw", &g_ov8858_mipi_raw_info},
#else
        #if 1

//  {"sp2508_mipi",&g_sp2508_mipi_raw_info},
  //      {"gc2755_mipi",&g_gc2755_mipi_raw_info},
    //    {"sp2529_mipi",&g_SP2529_MIPI_yuv_info},
//      {"gc5004_mipi",&g_gc5004_mipi_raw_info},
    //  {"gc2145_mipi",&g_GC2145_MIPI_yuv_info},
        {"gc2145_back_mipi",&g_GC2145_BACK_MIPI_yuv_info},
        {"gc2355_mipi",&g_gc2355_mipi_raw_info},
        {"sp2509_back_mipi",&g_sp2509_back_mipi_raw_info},
        {"gc2365_back_mipi", &g_gc2365_back_mipi_raw_info},
        {"gc0310_mipi",&g_GC0310_BACK_MIPI_yuv_info},
        {"gc030a_back_mipi", &g_gc030a_back_mipi_raw_info},
        {"sp0a09_back_mipi",&g_sp0a09_back_mipi_raw_info},
    {"gc5024_mipi",&g_gc5024_mipi_raw_info},
    {"gc5005_mipi",&g_gc5005_mipi_raw_info},
    {"ov5675_mipi_raw",&g_ov5675_mipi_raw_info},
        //{"gc5024_mipi",&g_gc5024_mipi_raw_info},      
    //  {"sp5408_mipi",&g_sp5408_raw_info},
    //  {"sp5409_mipi",&g_sp5409_mipi_raw_info},
    //  {"ov5645_mipi",&g_ov5645_mipi_yuv_info},
    //    {"bf3a20_mipi",&g_BF3A20_mipi_yuv_info},
    #else
    {"ov8825_mipi_raw", &g_ov8825_mipi_raw_info},
    {"hi544_mipi_raw", &g_hi544_mipi_raw_info},
    {"ov5640_mipi_yuv", &g_ov5640_mipi_yuv_info},
    {"ov5648_mipi_raw", &g_ov5648_mipi_raw_info},
    {"ov2680_mipi_raw", &g_ov2680_mipi_raw_info},
    {"sr352_mipi_yuv", &g_sr352_mipi_yuv_info},
    {"imx219_mipi_raw", &g_imx219_mipi_raw_info},
    {"s5k4ec_mipi_yuv", &g_s5k4ec_mipi_yuv_info},
    //{"ov8830_mipi_raw", &g_ov8830_mipi_raw_info},
    {"imx179_mipi_raw", &g_imx179_mipi_raw_info},
    {"ov8865_mipi_raw", &g_ov8865_mipi_raw_info},
    {"ov13850_mipi_raw", &g_ov13850_mipi_raw_info},
    //{"s5k5ccgx_yuv_info", &g_s5k5ccgx_yuv_info_mipi},
    //{"s5k4e1ga_mipi_raw", &g_s5k4e1ga_mipi_raw_info},
    //{"hi351_mipi_yuv", &g_hi351_mipi_yuv_info},
    //{"ov5640_mipi_raw", &g_ov5640_mipi_raw_info},
    //{"ov5647_mipi_raw_info", &g_ov5647_mipi_raw_info},
    {"ov5670_mipi_raw", &g_ov5670_mipi_raw_info},
        //{"SP2529_MIPI_yuv", &g_SP2529_MIPI_yuv_info},
       #endif
#endif
#endif
#ifdef CONFIG_BACK_CAMERA_CCIR
    {"ov5640_yuv", &g_ov5640_yuv_info},
    {"hi253_yuv", &g_hi253_yuv_info},
    {"ov5640_yuv", &g_ov5640_yuv_info},
    {"hi253_yuv_info", &g_hi253_yuv_info},
    {"GT2005_yuv", &g_GT2005_yuv_info},
    {"s5k4ec_yuv", &g_s5k4ec_yuv_info},
    {"sr352_yuv", &g_sr352_yuv_info},
    //{"ov7675_yuv", &g_OV7675_yuv_info},
    //{"ov2655_yuv", &g_OV2655_yuv_info},
    //{"ov7675_yuv", &g_OV7675_yuv_info},
    //{"ov2640_yuv", &g_OV2640_yuv_info},
    {"HM2058_yuv", &g_HM2058_yuv_info},
#endif
    {"", NULL},
};

const SENSOR_MATCH_T sub_sensor_infor_tab[]=
{
#ifdef CONFIG_FRONT_CAMERA_CCIR
    {"GC2155_yuv", &g_GC2155_yuv_info},
    {"hi253_yuv", &g_hi253_yuv_info},
    {"GC0308_yuv", &g_GC0308_yuv_info},
    {"GC2035_yuv", &g_GC2035_yuv_info},
    {"HI702_yuv", &g_HI702_yuv_info},
    {"ov7675_yuv", &g_OV7675_yuv_info},
    //{"GC0309_yuv", &g_GC0309_yuv_info},
    //{"OV7690_yuv", g_OV7690_yuv_info},
#endif

#ifdef CONFIG_FRONT_CAMERA_MIPI
#if (defined(CONFIG_CAMERA_ISP_VERSION_V3) || defined(CONFIG_CAMERA_ISP_VERSION_V4))
    {"s5k5e3yx_mipi", &g_s5k5e3yx_mipi_raw_info},
    {"ov5648_mipi_raw", &g_ov5648_mipi_raw_info},
    {"ov2680_mipi_raw", &g_ov2680_mipi_raw_info},
#endif  
        {"sp2509_mipi",&g_sp2509_mipi_raw_info},
        {"sp0a08_mipi",&g_sp0a08_mipi_raw_info},
        {"sp0a09_mipi",&g_sp0a09_mipi_raw_info},
    //{"hi255_yuv", &g_hi255_yuv_info},
//  {"GC2155_MIPI_yuv", &g_GC2155_MIPI_yuv_info},
    {"GC0310_MIPI_yuv", &g_GC0310_MIPI_yuv_info},
    {"gc030a_mipi", &g_gc030a_mipi_raw_info},

    {"gc2145_mipi",&g_GC2145_MIPI_yuv_info},
    {"gc2365_mipi", &g_gc2365_mipi_raw_info},
#if !(defined(CONFIG_CAMERA_ISP_VERSION_V3) || defined(CONFIG_CAMERA_ISP_VERSION_V4))
            {"GC0310_MIPI_yuv", &g_GC0310_MIPI_yuv_info},
            {"sr030pc50_yuv", &g_sr030pc50_yuv_info},
#endif
#endif
    {"", NULL},

在这里面注意要有你对应的前后摄像头的驱动文件的引用，如果上面几点都OK了就能正确的修改陈单双摄像头。