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Camera 驱动 Bringup

發布時間：2023/12/14 编程问答 51 豆豆

生活随笔收集整理的這篇文章主要介紹了 Camera 驱动 Bringup 小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

和你一起終身學習，這里是程序員Android

經典好文推薦，通過閱讀本文，您將收獲以下知識點:

一、Kernel 代碼移植
二、Vendor 代碼移植
三、擴展

一、Kernel 代碼移植

1. DTS 文件配置

dts 文件目錄：
高通SDM660平臺代碼中，arm64 與 arm 走的是同一個目錄文件，
kernel\msm-4.4\arch\arm64\boot\dts\qcom這個目錄其實是 \kernel\msm-4.4\arch\arm\boot\dts\qcom的軟鏈接。

Camera 相關的 dts 文件：

@ kernel\msm-4.4\arch\arm64\boot\dts\qcom\sdm660.dtsi @ kernel\msm-4.4\arch\arm64\boot\dts\qcom\sdm660-camera.dtsi @ kernel\msm-4.4\arch\arm64\boot\dts\qcom\sdm660-pinctrl.dtsi @ kernel\msm-4.4\arch\arm64\boot\dts\qcom\sdm660-camera-sensor-mtp.dtsi

1.1 sdm660.dtsi

在該文件中，主要功能如下：

引入 sdm660-camera.dtsi 文件
配置 camera_focus 和 camera_snapshot 對應的 GPIO 及上報的 keycode。

@ \kernel\msm-4.4\arch\arm\boot\dts\qcom\sdm660.dtsi // 1. 引入 sdm660-camera.dtsi #include "sdm660-camera.dtsi" // 2. 配置 camera_focus 和 camera_snapshot GPIO 及對應的 keycode。 &soc {gpio_keys {status = "okay";compatible = "gpio-keys";input-name = "gpio-keys";pinctrl-names = "tlmm_gpio_key_active","tlmm_gpio_key_suspend";pinctrl-0 = <&gpio_key_active>;pinctrl-1 = <&gpio_key_suspend>;camera_focus {label = "camera_focus";gpios = <&tlmm 64 0x1>;linux,input-type = <1>;linux,code = <0x210>;debounce-interval = <15>;};camera_snapshot {label = "camera_snapshot";gpios = <&tlmm 113 0x1>;linux,input-type = <1>;linux,code = <0x2fe>;debounce-interval = <15>;};}; };

1.2 sdm660-camera.dtsi

在 sdm660-camera.dtsi 中主要是配置了平臺相關的Camera 底層硬件相關的配置，比如 CSI，CS。
如無特殊需求，一般不會修改此處的代碼。

部分代碼及對應的解釋如下：

各參數解析詳見： @ \kernel\msm-4.4\Documentation\devicetree\bindings\media\video\msm-csid.txt @ \kernel\msm-4.4\Documentation\devicetree\bindings\media\video\msm-csi-phy.txt&soc {qcom,csiphy@c824000 { // CSI 總線映射的寄存器地址cell-index = <0>; // CSI 硬件總線索引號 0compatible = "qcom,csiphy-v3.5", "qcom,csiphy"; // compatible = “a廠商，p產品”, “標準bbb類型設備”。// 那么linux kernel可能首先使用“a廠商，p產品”來匹配適合的driver，// 如果沒有匹配到，那么使用字符串“標準bbb類型設備”來繼續尋找適合的driver。reg = <0xc824000 0x1000>,<0xca00120 0x4>; // 使用的寄存器地址及長度reg-names = "csiphy", "csiphy_clk_mux"; // cisphy 寄存器地址為 0xc824000, 長度為 0x1000// csiphy_clk_mux 寄存器地址為 0xca00120,長度為 0x4interrupts = <0 78 0>; // interrupt的格式是<type, interrupt number, trigger type>，詳見《（擴展1） interrupts 中斷節點解析》interrupt-names = "csiphy"; // 中斷name，可通過 cat /proc/interrupts 獲取gdscr-supply = <&gdsc_camss_top>; bimc_smmu-supply = <&gdsc_bimc_smmu>;qcom,cam-vreg-name = "gdscr", "bimc_smmu"; // voltage regulators 和 nameclocks = <&clock_rpmcc MMSSNOC_AXI_CLK>, // clocks 和 name<&clock_mmss MMSS_MNOC_AHB_CLK>,<&clock_mmss MMSS_BIMC_SMMU_AHB_CLK>,<&clock_mmss MMSS_BIMC_SMMU_AXI_CLK>,<&clock_mmss MMSS_CAMSS_AHB_CLK>,<&clock_mmss MMSS_CAMSS_TOP_AHB_CLK>,<&clock_mmss CSI0_CLK_SRC>,<&clock_mmss MMSS_CAMSS_CSI0_CLK>,<&clock_mmss MMSS_CAMSS_CPHY_CSID0_CLK>,<&clock_mmss CSI0PHYTIMER_CLK_SRC>,<&clock_mmss MMSS_CAMSS_CSI0PHYTIMER_CLK>,<&clock_mmss MMSS_CAMSS_ISPIF_AHB_CLK>,<&clock_mmss CSIPHY_CLK_SRC>,<&clock_mmss MMSS_CAMSS_CSIPHY0_CLK>,<&clock_mmss MMSS_CSIPHY_AHB2CRIF_CLK>;clock-names = "mmssnoc_axi", "mnoc_ahb","bmic_smmu_ahb", "bmic_smmu_axi","camss_ahb_clk", "camss_top_ahb_clk","csi_src_clk", "csi_clk", "cphy_csid_clk","csiphy_timer_src_clk", "csiphy_timer_clk","camss_ispif_ahb_clk", "csiphy_clk_src", "csiphy_clk","csiphy_ahb2crif";qcom,clock-rates = <0 0 0 0 0 0 310000000 0 0 269333333 0 0 200000000 0 0>; // 上面對應所有clock 的速率status = "ok";};qcom,csiphy@c825000 {cell-index = <1>; // CSI 硬件總線索引號 1compatible = "qcom,csiphy-v3.5", "qcom,csiphy";reg = <0xc825000 0x1000>, <0xca00124 0x4>;reg-names = "csiphy", "csiphy_clk_mux"; // cisphy 寄存器地址為 0xc825000, 長度為 0x1000// csiphy_clk_mux 寄存器地址為 0xca00124 ,長度為 0x4interrupts = <0 79 0>;interrupt-names = "csiphy";...... // 此處省略一大段代碼，內容和前面 CSI 0 一樣，配置clk 及其速率};

1.3 sdm660-camera-sensor-mtp.dtsi

文件 sdm660-pinctrl.dtsi和 sdm660-camera-sensor-mtp.dtsi是在 sdm660-mtp.dtsi中被包含的。

@ \kernel\msm-4.4\arch\arm\boot\dts\qcom\sdm660-mtp.dtsi#include "sdm660-pinctrl.dtsi" #include "sdm660-camera-sensor-mtp.dtsi"

sdm660-camera-sensor-mtp.dtsi是kernel camera 重點要配置的文件
其中包括了 camera 閃光燈的配置，avdd/dovdd/dvdd/vaf 等電壓的配置，camera 馬達的配置，eeprom的配置，camera sensor的配置。

1.3.1 Camera Sensor DTS配置

@ \kernel\msm-4.4\arch\arm\boot\dts\qcom\sdm660-camera-sensor-mtp.dtsi @ \kernel\msm-4.4\Documentation\devicetree\bindings\media\video\msm-cci.txt&cci {qcom,camera@0 {cell-index = <0>; // Camera索引號 0，此處注意不要重復了compatible = "qcom,camera";reg = <0x0>; // 和索引號一樣qcom,csiphy-sd-index = <0>; // 使用 CSI 0，具體根據硬件決定，一般來說， 0：后攝， 1：前攝qcom,csid-sd-index = <0>; // 使用 CSI 0 qcom,mount-angle = <90>; // Sensor 成像方向與主板的角度，camear旋轉角度qcom,led-flash-src = <&led_flash0>; // 閃光燈，使用 led_flash0qcom,actuator-src = <&actuator0>; // 馬達，使用 actuator0qcom,ois-src = <&ois0>; // 是否支持光學防抖qcom,eeprom-src = <&eeprom1>; // eeprom 1cam_vio-supply = <&pm660_l11>; // IO voltage IO口電壓 VDDIO?數字?IO?電源主要給?I2C?部分供電；cam_vana-supply = <&cam_avdd_gpio_regulator>; // analog voltage 模擬電壓 AVDD?模擬供電，主要給感光區和?ADC?部分供電；cam_vdig-supply = <&cam_rear_dvdd_gpio_regulator>; // digital voltage 數字電壓DVDD?數字供電，主要給?ISP?供電cam_vaf-supply = <&cam_vaf_gpio_regulator>; // AF voltage Camera?自動對焦馬達的供電cam_v_custom1-supply = <&cam_dovdd_gpio_regulator>;qcom,cam-vreg-name = "cam_vio", "cam_vana", "cam_vdig", "cam_vaf","cam_v_custom1"; // 供電配置及對應的電壓，詳見下qcom,cam-vreg-min-voltage = <1780000 0 0 0 0>;qcom,cam-vreg-max-voltage = <1950000 0 0 0 0>;qcom,cam-vreg-op-mode = <105000 0 0 0 0>;qcom,gpio-no-mux = <0>; // 1:表示 gpio mux 不可用 0:表示可用pinctrl-names = "cam_default", "cam_suspend"; // Camera gpio clk 和 reset gpio 配置 pinctrl-0 = <&cam_sensor_mclk0_active &cam_sensor_rear_active>;pinctrl-1 = <&cam_sensor_mclk0_suspend &cam_sensor_rear_suspend>;gpios = <&tlmm 32 0>, <&tlmm 46 0>;qcom,gpio-reset = <1>;qcom,gpio-req-tbl-num = <0 1>;qcom,gpio-req-tbl-flags = <1 0>;qcom,gpio-req-tbl-label = "CAMIF_MCLK0", "CAM_RESET0";qcom,sensor-position = <0>; // 1:前置 0:后置qcom,sensor-mode = <0>; ===>{ @ \kernel\msm-4.4\Documentation\devicetree\bindings\media\video\msm-cci.txt- qcom,sensor-mode : should contain sensor mode supported- 0 -> back camera 2D- 1 -> front camera 2D- 2 -> back camera 3D- 3 -> back camera int 3D}qcom,cci-master = <0>; // I2C 0status = "ok";clocks = <&clock_mmss MCLK0_CLK_SRC>, <&clock_mmss MMSS_CAMSS_MCLK0_CLK>;clock-names = "cam_src_clk", "cam_clk";qcom,clock-rates = <24000000 0>; // clock rate in Hz//- qcom,sensor-type : should contain format of data that sensor streams // - 0 -> bayer format // - 1 -> yuv format};qcom,camera@1 {cell-index = <1>; // Camera索引號 1，此處注意不要重復了compatible = "qcom,camera";reg = <0x1>;qcom,csiphy-sd-index = <1>;qcom,csid-sd-index = <1>;qcom,mount-angle = <90>;qcom,actuator-src = <&actuator1>;qcom,eeprom-src = <&eeprom1>;cam_vio-supply = <&cam_dovdd_gpio_regulator>;cam_vana-supply = <&cam_avdd_gpio_regulator>;cam_vdig-supply = <&cam_rear_dvdd_gpio_regulator>;cam_vaf-supply = <&cam_vaf_gpio_regulator>;qcom,cam-vreg-name = "cam_vio", "cam_vana", "cam_vdig", "cam_vaf";qcom,cam-vreg-min-voltage = <0 0 0 0>;qcom,cam-vreg-max-voltage = <0 0 0 0>;qcom,cam-vreg-op-mode = <105000 0 0 0>;qcom,gpio-no-mux = <0>;pinctrl-names = "cam_default", "cam_suspend";pinctrl-0 = <&cam_sensor_mclk2_active &cam_sensor_rear2_active>;pinctrl-1 = <&cam_sensor_mclk2_suspend &cam_sensor_rear2_suspend>;gpios = <&tlmm 34 0>, <&tlmm 48 0>;qcom,gpio-reset = <1>;qcom,gpio-req-tbl-num = <0 1>;qcom,gpio-req-tbl-flags = <1 0>;qcom,gpio-req-tbl-label = "CAMIF_MCLK", "CAM_RESET";qcom,sensor-position = <0>; // 1:前置 0:后置qcom,sensor-mode = <0>; // 0 -> back camera 2Dqcom,cci-master = <1>; // I2C 1status = "ok";clocks = <&clock_mmss MCLK2_CLK_SRC>, <&clock_mmss MMSS_CAMSS_MCLK2_CLK>;clock-names = "cam_src_clk", "cam_clk";qcom,clock-rates = <24000000 0>;};qcom,camera@2 {cell-index = <2>; // Camera索引號 2，此處注意不要重復了compatible = "qcom,camera";reg = <0x02>;qcom,csiphy-sd-index = <2>;qcom,csid-sd-index = <2>;qcom,mount-angle = <270>;//qcom,actuator-src = <&actuator2>; // 前報不需要馬達，所以此處不用配置馬達，同樣下面也不用配置 af voltageqcom,eeprom-src = <&eeprom2>;cam_vio-supply = <&pm660_l11>;cam_vana-supply = <&cam_avdd_gpio_regulator>;cam_vdig-supply = <&cam_dvdd_gpio_regulator>;qcom,cam-vreg-name = "cam_vio", "cam_vana", "cam_vdig";qcom,cam-vreg-min-voltage = <1780000 0 0>;qcom,cam-vreg-max-voltage = <1950000 0 0>;qcom,cam-vreg-op-mode = <105000 0 0>;qcom,gpio-no-mux = <0>;pinctrl-names = "cam_default", "cam_suspend";pinctrl-0 = <&cam_sensor_mclk1_active &cam_sensor_front_active>;pinctrl-1 = <&cam_sensor_mclk1_suspend &cam_sensor_front_suspend>;gpios = <&tlmm 33 0>, <&tlmm 47 0>;qcom,gpio-reset = <1>;qcom,gpio-req-tbl-num = <0 1>;qcom,gpio-req-tbl-flags = <1 0>;qcom,gpio-req-tbl-label = "CAMIF_MCLK2", "CAM_RESET2";qcom,sensor-position = <1>; // 1:前置 0:后置qcom,sensor-mode = <1>; // 1 -> front camera 2Dqcom,cci-master = <1>; // I2C 1status = "ok";clocks = <&clock_mmss MCLK1_CLK_SRC>, <&clock_mmss MMSS_CAMSS_MCLK1_CLK>;clock-names = "cam_src_clk", "cam_clk";qcom,clock-rates = <24000000 0>;}; }

1.3.2 Camera 供電DTS配置（avdd/dovdd/dvdd/vaf）

Camera 供電配置要根據具體的硬件來配置，
如果走的是 pm 電源則配置如cam_vio-supply = <&pm660_l11>;
如果走的是具體GPIO供電，則要做如下配置，調用時配置如cam_vana-supply = <&cam_avdd_gpio_regulator>;
各GPIO 供電配置如下：

@ \kernel\msm-4.4\arch\arm\boot\dts\qcom\sdm660-camera-sensor-mtp.dtsi &soc {cam_avdd_gpio_regulator: cam_avdd_fixed_regulator {compatible = "regulator-fixed";regulator-name = "cam_avdd_gpio_regulator";regulator-min-microvolt = <3600000>;regulator-max-microvolt = <3600000>;enable-active-high;gpio = <&tlmm 51 0>; // 使用 CPU的 GPIO 51 ，供電 3.6vvin-supply = <&pm660l_bob>;};cam_dovdd_gpio_regulator: cam_dovdd_fixed_regulator {compatible = "regulator-fixed";regulator-name = "cam_dovdd_gpio_regulator";regulator-min-microvolt = <3600000>;regulator-max-microvolt = <3600000>;enable-active-high;gpio = <&tlmm 0 0>; // 使用 CPU的 GPIO 0 ，供電 3.6vvin-supply = <&pm660l_bob>;};cam_dvdd_gpio_regulator: cam_dvdd_fixed_regulator {compatible = "regulator-fixed";regulator-name = "cam_dvdd_gpio_regulator";regulator-min-microvolt = <3600000>;regulator-max-microvolt = <3600000>;enable-active-high;gpio = <&pm660l_gpios 3 0>; // 使用 PM660L的 gpio 3 ，供電 3.6vvin-supply = <&pm660l_bob>;};cam_rear_dvdd_gpio_regulator: cam_rear_dvdd_fixed_regulator {compatible = "regulator-fixed";regulator-name = "cam_rear_dvdd_gpio_regulator";regulator-min-microvolt = <3600000>;regulator-max-microvolt = <3600000>;enable-active-high;gpio = <&pm660l_gpios 4 0>; // 使用 PM660L的 gpio 4 ，供電 3.6vvin-supply = <&pm660l_bob>;};cam_vaf_gpio_regulator:cam_vaf_fixed_regulator {compatible = "regulator-fixed";regulator-name = "cam_vaf_gpio_regulator";regulator-min-microvolt = <3600000>;regulator-max-microvolt = <3600000>;enable-active-high;gpio = <&tlmm 50 0>; // 使用 CPU的 gpio 50 ，供電 3.6vvin-supply = <&pm660l_bob>;}; };

1.3.3 Camera 閃光燈DTS配置

@ \kernel\msm-4.4\arch\arm\boot\dts\qcom\sdm660-camera-sensor-mtp.dtsi &soc {led_flash0: qcom,camera-flash@0 {cell-index = <0>; // 閃光燈配置索引 0compatible = "qcom,camera-flash";// 如下：如果兩顆燈的話，則配置對應的兩個供電，如果是一顆燈的主話，則配置一個供電qcom,flash-source = <&pm660l_flash0 &pm660l_flash1>;//閃光燈供電配置qcom,torch-source = <&pm660l_torch0 &pm660l_torch1>;//手電筒供電配置qcom,switch-source = <&pm660l_switch0>;status = "ok";};led_flash1: qcom,camera-flash@1 {cell-index = <1>; // 閃光燈配置索引 1compatible = "qcom,camera-flash";qcom,flash-source = <&pm660l_flash2>; //閃光燈供電配置qcom,torch-source = <&pm660l_torch2>; //手電筒供電配置qcom,switch-source = <&pm660l_switch1>;status = "ok";};

上述的相關電源配置均在 msm-pm660l.dtsi文件中

@ \kernel\msm-4.4\arch\arm\boot\dts\qcom\msm-pm660l.dtsiflash_led: qcom,leds@d300 {compatible = "qcom,qpnp-flash-led-v2";reg = <0xd300 0x100>;label = "flash";interrupts = <0x3 0xd3 0x0 IRQ_TYPE_EDGE_RISING>,<0x3 0xd3 0x3 IRQ_TYPE_EDGE_RISING>,<0x3 0xd3 0x4 IRQ_TYPE_EDGE_RISING>;interrupt-names = "led-fault-irq","all-ramp-down-done-irq","all-ramp-up-done-irq";qcom,hdrm-auto-mode;qcom,short-circuit-det;qcom,open-circuit-det;qcom,vph-droop-det;qcom,thermal-derate-en;qcom,thermal-derate-current = <200 500 1000>;qcom,isc-delay = <192>;qcom,pmic-revid = <&pm660l_revid>;pm660l_flash0: qcom,flash_0 {label = "flash";qcom,led-name = "led:flash_0";qcom,max-current = <1500>; // 最大電流 1.5Aqcom,default-led-trigger = "flash0_trigger";qcom,id = <0>; // flash0qcom,current-ma = <1000>; qcom,duration-ms = <1280>;qcom,ires-ua = <12500>;qcom,hdrm-voltage-mv = <325>;qcom,hdrm-vol-hi-lo-win-mv = <100>;};pm660l_flash1: qcom,flash_1 {label = "flash";qcom,led-name = "led:flash_1";qcom,max-current = <1500>;qcom,default-led-trigger = "flash1_trigger";qcom,id = <1>;qcom,current-ma = <1000>;qcom,duration-ms = <1280>;qcom,ires-ua = <12500>;qcom,hdrm-voltage-mv = <325>;qcom,hdrm-vol-hi-lo-win-mv = <100>;};pm660l_flash2: qcom,flash_2 {label = "flash";qcom,led-name = "led:flash_2";qcom,max-current = <750>;qcom,default-led-trigger = "flash2_trigger";qcom,id = <2>;qcom,current-ma = <500>;qcom,duration-ms = <1280>;qcom,ires-ua = <12500>;qcom,hdrm-voltage-mv = <325>;qcom,hdrm-vol-hi-lo-win-mv = <100>;};pm660l_torch0: qcom,torch_0 {label = "torch";qcom,led-name = "led:torch_0";qcom,max-current = <500>;qcom,default-led-trigger = "torch0_trigger";qcom,id = <0>;qcom,current-ma = <300>;qcom,ires-ua = <12500>;qcom,hdrm-voltage-mv = <325>;qcom,hdrm-vol-hi-lo-win-mv = <100>;};......pm660l_switch0: qcom,led_switch_0 {label = "switch";qcom,led-name = "led:switch_0";qcom,led-mask = <3>;qcom,default-led-trigger = "switch0_trigger";};};

1.3.4 Camera 馬達DTS配置

&cci {actuator0: qcom,actuator@0 {cell-index = <0>;reg = <0x0>;compatible = "qcom,actuator";qcom,cci-master = <0>; // 馬達使用的 i2c master , I2C 0cam_vaf-supply = <&cam_vaf_gpio_regulator>; // 馬達供電qcom,cam-vreg-name = "cam_vaf";qcom,cam-vreg-min-voltage = <3300000>;qcom,cam-vreg-max-voltage = <3600000>;qcom,cam-vreg-op-mode = <100000>;};actuator1: qcom,actuator@1 {cell-index = <1>;reg = <0x1>;compatible = "qcom,actuator";qcom,cci-master = <1>; // 馬達使用的 i2c master , I2C 1cam_vaf-supply = <&cam_vaf_gpio_regulator>;qcom,cam-vreg-name = "cam_vaf";qcom,cam-vreg-min-voltage = <3300000>;qcom,cam-vreg-max-voltage = <3600000>;qcom,cam-vreg-op-mode = <100000>;};

1.3.5 Camera 光學防抖 OSI DTS配置

ois0: qcom,ois@0 {cell-index = <0>;reg = <0x0>;compatible = "qcom,ois";qcom,cci-master = <0>; // 使用 I2C 0gpios = <&tlmm 50 0>; // GPIO 50qcom,gpio-vaf = <0>;qcom,gpio-req-tbl-num = <0>;qcom,gpio-req-tbl-flags = <0>;qcom,gpio-req-tbl-label = "CAM_VAF";pinctrl-names = "cam_default", "cam_suspend";pinctrl-0 = <&cam_actuator_vaf_active>;pinctrl-1 = <&cam_actuator_vaf_suspend>;status = "disabled";};

1.3.6 Camera eeprom DTS配置

eeprom0: qcom,eeprom@0 {cell-index = <0>;reg = <0>;compatible = "qcom,eeprom";cam_vio-supply = <&pm660_l11>;cam_vana-supply = <&cam_avdd_gpio_regulator>;cam_vdig-supply = <&cam_rear_dvdd_gpio_regulator>;cam_vaf-supply = <&pm660l_l8>;qcom,cam-vreg-name = "cam_vio", "cam_vana", "cam_vdig", "cam_vaf";qcom,cam-vreg-min-voltage = <1780000 0 0 2800000>;qcom,cam-vreg-max-voltage = <1950000 0 0 3400000>;qcom,cam-vreg-op-mode = <105000 0 0 100000>;qcom,gpio-no-mux = <0>;pinctrl-names = "cam_default", "cam_suspend";pinctrl-0 = <&cam_sensor_mclk0_active &cam_sensor_rear_active>;pinctrl-1 = <&cam_sensor_mclk0_suspend &cam_sensor_rear_suspend>;gpios = <&tlmm 32 0>, <&tlmm 46 0>;qcom,gpio-reset = <1>;qcom,gpio-req-tbl-num = <0 1>;qcom,gpio-req-tbl-flags = <1 0>;qcom,gpio-req-tbl-label = "CAMIF_MCLK0", "CAM_RESET0";qcom,sensor-position = <0>;qcom,sensor-mode = <0>;qcom,cci-master = <0>;status = "ok";clocks = <&clock_mmss MCLK0_CLK_SRC>, <&clock_mmss MMSS_CAMSS_MCLK0_CLK>;clock-names = "cam_src_clk", "cam_clk";qcom,clock-rates = <24000000 0>;};

1.3.7 Camera PM660L GPIO DTS配置

前面我們使用到了兩個 PM660L 的GPIO：
gpio = <&pm660l_gpios 3 0>;
gpio = <&pm660l_gpios 4 0>;

不同于 CPU的gpio ，其需要作單獨配置，如下：

@\kernel\msm-4.4\arch\arm\boot\dts\qcom\sdm660-camera-sensor-mtp.dtsi &pm660l_gpios {gpio@c300 { /* GPIO4 -CAMERA SENSOR 0 VDIG*/qcom,mode = <1>; /* Output */qcom,pull = <5>; /* No Pull */qcom,vin-sel = <0>; /* VIN1 GPIO_LV */qcom,src-sel = <0>; /* GPIO */qcom,invert = <0>; /* Invert */qcom,master-en = <1>; /* Enable GPIO */status = "ok";};gpio@c200 { /* GPIO3 -CAMERA SENSOR 2 VDIG*/qcom,mode = <1>; /* Output */qcom,pull = <5>; /* No Pull */qcom,vin-sel = <0>; /* VIN1 GPIO_LV */qcom,src-sel = <0>; /* GPIO */qcom,invert = <0>; /* Invert */qcom,master-en = <1>; /* Enable GPIO */status = "ok";}; };

1.4 sdm660-pinctrl.dtsi

在前面中，有需要用到的gpio，出于電源管理的需求，需要在 pinctrl 中配置其active 和 suspend 對應的配置：

例如，GPIO 32 和 GPIO 46 以及 GPIO 50
在前邊代碼中，使用配置如下：

gpio 50：pinctrl-names = "cam_default", "cam_suspend";pinctrl-0 = <&cam_actuator_vaf_active>;pinctrl-1 = <&cam_actuator_vaf_suspend>;GPIO 32 、GPIO 46：pinctrl-names = "cam_default", "cam_suspend";pinctrl-0 = <&cam_sensor_mclk0_active &cam_sensor_rear_active>;pinctrl-1 = <&cam_sensor_mclk0_suspend &cam_sensor_rear_suspend>;gpios = <&tlmm 32 0>, <&tlmm 46 0>;@ \kernel\msm-4.4\arch\arm\boot\dts\qcom\sdm660-pinctrl.dtsicam_actuator_vaf_active: cam_actuator_vaf_active {/* ACTUATOR POWER */mux {pins = "gpio50";function = "gpio";};config {pins = "gpio50";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_actuator_vaf_suspend: cam_actuator_vaf_suspend {/* ACTUATOR POWER */mux {pins = "gpio50";function = "gpio";};config {pins = "gpio50";bias-pull-down; /* PULL DOWN */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk0_active: cam_sensor_mclk0_active {/* MCLK0 */mux {/* CLK */pins = "gpio32";function = "cam_mclk";};config {pins = "gpio32";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk0_suspend: cam_sensor_mclk0_suspend {/* MCLK0 */mux {/* CLK */pins = "gpio32";function = "cam_mclk";};config {pins = "gpio32";bias-pull-down; /* PULL DOWN */drive-strength = <2>; /* 2 MA */};};cam_sensor_rear_active: cam_sensor_rear_active {/* RESET, STANDBY */mux {pins = "gpio46";function = "gpio";};config {pins = "gpio46";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_rear_suspend: cam_sensor_rear_suspend {/* RESET, STANDBY */mux {pins = "gpio46";function = "gpio";};config {pins = "gpio46";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk1_active: cam_sensor_mclk1_active {/* MCLK1 */mux {/* CLK */pins = "gpio33";function = "cam_mclk";};config {pins = "gpio33";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk1_suspend: cam_sensor_mclk1_suspend {/* MCLK1 */mux {/* CLK */pins = "gpio33";function = "cam_mclk";};config {pins = "gpio33";bias-pull-down; /* PULL DOWN */drive-strength = <2>; /* 2 MA */};};cam_sensor_rear2_active: cam_sensor_rear2_active {/* RESET, STANDBY */mux {pins = "gpio48";function = "gpio";};config {pins = "gpio48";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_rear2_suspend: cam_sensor_rear2_suspend {/* RESET, STANDBY */mux {pins = "gpio48";function = "gpio";};config {pins = "gpio48";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk2_active: cam_sensor_mclk2_active {/* MCLK1 */mux {/* CLK */pins = "gpio34";function = "cam_mclk";};config {pins = "gpio34";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk2_suspend: cam_sensor_mclk2_suspend {/* MCLK1 */mux {/* CLK */pins = "gpio34";function = "cam_mclk";};config {pins = "gpio34";bias-pull-down; /* PULL DOWN */drive-strength = <2>; /* 2 MA */};};cam_sensor_front_active: cam_sensor_front_active {/* RESET VANA*/mux {pins = "gpio47";function = "gpio";};config {pins = "gpio47";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_front_suspend: cam_sensor_front_suspend {/* RESET */mux {pins = "gpio47";function = "gpio";};config {pins = "gpio47";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk3_active: cam_sensor_mclk3_active {/* MCLK3 */mux {/* CLK */pins = "gpio35";function = "cam_mclk";};config {pins = "gpio35";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_mclk3_suspend: cam_sensor_mclk3_suspend {/* MCLK3 */mux {/* CLK */pins = "gpio35";function = "cam_mclk";};config {pins = "gpio35";bias-pull-down; /* PULL DOWN */drive-strength = <2>; /* 2 MA */};};cam_sensor_front_iris_active: cam_sensor_front_iris_active {/* RESET */mux {pins = "gpio52";function = "gpio";};config {pins = "gpio52";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};cam_sensor_front_iris_suspend: cam_sensor_front_iris_suspend {/* RESET */mux {pins = "gpio52";function = "gpio";};config {pins = "gpio52";bias-disable; /* No PULL */drive-strength = <2>; /* 2 MA */};};

至此，Camera 中 dts 相關的配置好上邊這些就ok 了。

2. Kernel Driver 配置

現在比較新的高通代碼中，Kernel 中只需要配置好DTS就可以了，驅動代碼是以庫代碼的形式存放在vendor 目錄中。

而kernel 中的camera 相關的 C 文件是高通默認的通用文件。

@ \kernel\msm-4.4\drivers\media\platform\msm\camera_v2

我們今天重點在移植，這一塊的代碼，后續我講camera 工作流程的時候重點來學習。

二、Vendor 代碼移植

目前高通中，vendor 中包括了，camera、馬達、eeprom、Trunning 效果等庫文件，這些是我們要根據需求移植進來的。

接下來我們慢慢寫的來。

1. Camera Sensor 庫文件代碼移植

以 imx350 sensor 為例：

@ qcom\proprietary\common\config\device-vendor.mk @ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\config\Android.mk @ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\config\imx350_suny.xml @ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\config\sdm660_camera.xml @ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\libs\imx350\ @ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\chromatix\0310\chromatix_imx350_sunny\

1.1 導入Camera Sensor lib 庫代碼

將 sensor lib庫代碼放入如下目錄：
@\vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\sensor\libs\imx350

注意Android.mk中 LOCAL_SRC_FILES:= imx350_lib.c LOCAL_MODULE := libmmcamera_imx350

需要在 @\vendor\qcom\proprietary\common\config\device-vendor.mk中導入模塊，添加修改如下：
MM_CAMERA += libmmcamera_imx350

2. 導入Camera Chromatix 默認效果參數

將默認的 Chromatix 效果參數放入如下目錄
@\vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\chromatix\0310\chromatix_imx350_sunny

其中包括了，3A 及 ISP 的效果參數，后續Camera Turnning 工程師會代碼效果后修以下面的參數。

由于上面每個分別會編譯成多個庫，所以我們要注意每個庫的名字，我們進入每個文件夾的Android.mk 看下：

@ mm-camera2\media-controller\modules\sensors\chromatix\0310\chromatix_imx350_sunny\3A LOCAL_MODULE := libchromatix_imx350_sunny_default_preview_3a LOCAL_MODULE := libchromatix_imx350_sunny_default_video_3a LOCAL_MODULE := libchromatix_imx350_sunny_hfr_120_3a LOCAL_MODULE := libchromatix_imx350_sunny_hfr_60_3a LOCAL_MODULE := libchromatix_imx350_sunny_hfr_90_3a LOCAL_MODULE := libchromatix_imx350_sunny_zsl_preview_3a LOCAL_MODULE := libchromatix_imx350_sunny_zsl_video_3a@ mm-camera2\media-controller\modules\sensors\chromatix\0310\chromatix_imx350_sunny\common LOCAL_MODULE := libchromatix_imx350_sunny_common@ mm-camera2\media-controller\modules\sensors\chromatix\0310\chromatix_imx350_sunny\cpp LOCAL_MODULE := libchromatix_imx350_sunny_cpp_hfr_120 LOCAL_MODULE := libchromatix_imx350_sunny_cpp_hfr_60 LOCAL_MODULE := libchromatix_imx350_sunny_cpp_hfr_90 LOCAL_MODULE := libchromatix_imx350_sunny_cpp_liveshot LOCAL_MODULE := libchromatix_imx350_sunny_cpp_preview LOCAL_MODULE := libchromatix_imx350_sunny_cpp_snapshot LOCAL_MODULE := libchromatix_imx350_sunny_cpp_video@ mm-camera2\media-controller\modules\sensors\chromatix\0310\chromatix_imx350_sunny\isp LOCAL_MODULE := libchromatix_imx350_sunny_hfr_120 LOCAL_MODULE := libchromatix_imx350_sunny_hfr_60 LOCAL_MODULE := libchromatix_imx350_sunny_hfr_90 LOCAL_MODULE := libchromatix_imx350_sunny_liveshot LOCAL_MODULE := libchromatix_imx350_sunny_preview LOCAL_MODULE := libchromatix_imx350_sunny_snapshot LOCAL_MODULE := libchromatix_imx350_sunny_default_video LOCAL_MODULE := libchromatix_imx350_sunny_postproc LOCAL_MODULE := libchromatix_imx350_sunny_oz_preview_3a LOCAL_MODULE := libchromatix_imx350_sunny_oz_video_3a@ mm-camera2\media-controller\modules\sensors\chromatix\0310\chromatix_imx350_sunny\postproc LOCAL_MODULE := libchromatix_imx350_sunny_postproc

在 @\vendor\qcom\proprietary\common\config\device-vendor.mk中添加如下修改：

MM_CAMERA += libchromatix_imx350_sunny_default_preview_3a MM_CAMERA += libchromatix_imx350_sunny_default_video_3a MM_CAMERA += libchromatix_imx350_sunny_hfr_120_3a MM_CAMERA += libchromatix_imx350_sunny_hfr_60_3a MM_CAMERA += libchromatix_imx350_sunny_hfr_90_3a MM_CAMERA += libchromatix_imx350_sunny_zsl_preview_3a MM_CAMERA += libchromatix_imx350_sunny_zsl_video_3aMM_CAMERA += libchromatix_imx350_sunny_commonMM_CAMERA += libchromatix_imx350_sunny_cpp_hfr_120 MM_CAMERA += libchromatix_imx350_sunny_cpp_hfr_60 MM_CAMERA += libchromatix_imx350_sunny_cpp_hfr_90 MM_CAMERA += libchromatix_imx350_sunny_cpp_liveshot MM_CAMERA += libchromatix_imx350_sunny_cpp_preview MM_CAMERA += libchromatix_imx350_sunny_cpp_snapshot MM_CAMERA += libchromatix_imx350_sunny_cpp_videoMM_CAMERA += libchromatix_imx350_sunny_hfr_120 MM_CAMERA += libchromatix_imx350_sunny_hfr_60 MM_CAMERA += libchromatix_imx350_sunny_hfr_90 MM_CAMERA += libchromatix_imx350_sunny_liveshot MM_CAMERA += libchromatix_imx350_sunny_preview MM_CAMERA += libchromatix_imx350_sunny_snapshot MM_CAMERA += libchromatix_imx350_sunny_default_video MM_CAMERA += libchromatix_imx350_sunny_postproc MM_CAMERA += libchromatix_imx350_sunny_oz_preview_3a MM_CAMERA += libchromatix_imx350_sunny_oz_video_3aMM_CAMERA += libchromatix_imx350_sunny_postproc

2.1 chromatix version 0309 和 0310 定義
具體走哪個是由 CHROMATIX_VERSION來控制的，其定義于：

@\vendor\qcom\proprietary\mm-camera\Android.mkifeq ($(BUILD_SERVER), true)CHROMATIX_VERSION := 0208 else ifeq ($(BUILD_MM_CAMERA2), true)ifeq ($(OEM_CHROMATIX_0308), 1)CHROMATIX_VERSION := 0308Eelse ifeq ($(call is-board-platform-in-list,sdm660 msm8998),true)CHROMATIX_VERSION := 0310elseCHROMATIX_VERSION := 0309endif endififeq ($(OEM_CHROMATIX_0310), 1)OEM_CHROMATIX:=true endififeq ($(OEM_CHROMATIX), true)LOCAL_CHROMATIX_PATH := $(LOCAL_PATH)/../mm-camera-ext/mm-camerasdk/sensor/includes/$(CHROMATIX_VERSION)LOCAL_EXTEN_ISP_INCLUDES := $(LOCAL_PATH)/../mm-camera-ext/mm-camera2/media-controller/modules/isp2/LOCAL_EXTEN_PPROC_INCLUDES := $(LOCAL_PATH)/../mm-camera-ext/mm-camera2/media-controller/modules/pproc-new/cpp/LOCAL_EXTEN_CHROMATIX_FILE_PATH := $(LOCAL_PATH)/../mm-camera-ext/mm-camera2/media-controller/modules/sensors/chromatix/$(CHROMATIX_VERSION) elseLOCAL_CHROMATIX_PATH := $(LOCAL_PATH)/../mm-camerasdk/sensor/includes/$(CHROMATIX_VERSION)LOCAL_EXTEN_CHROMATIX_FILE_PATH := $(LOCAL_PATH)/mm-camera2/media-controller/modules/sensors/chromatix/$(CHROMATIX_VERSION) endif

3. 修改 Sensor Config XML

@ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\config\Android.mk @ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\config\imx350_suny.xml @ qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\config\sdm660_camera.xml

3.1 imx350_sunny.xml

@\mm-camera2\media-controller\modules\sensors\configs\imx350_sunny.xml
在該文件中，主要是描述了對應的 chromatix 模塊名字，如下：
可以看出，和前面 chromatix 中的模塊名字一模一樣。

<ChromatixConfigurationRoot><CommonChromatixInfo><ChromatixName><PostProc>imx350_sunny_postproc</PostProc></ChromatixName></CommonChromatixInfo><ResolutionChromatixInfo><ChromatixName sensor_resolution_index="0"><ISPCommon>imx350_sunny_common</ISPCommon><ISPPreview>imx350_sunny_snapshot</ISPPreview><ISPSnapshot>imx350_sunny_snapshot</ISPSnapshot><ISPVideo>imx350_sunny_default_video</ISPVideo><CPPPreview>imx350_sunny_cpp_preview</CPPPreview><CPPSnapshot>imx350_sunny_cpp_snapshot</CPPSnapshot><CPPVideo>imx350_sunny_cpp_video</CPPVideo><CPPLiveshot>imx350_sunny_cpp_liveshot</CPPLiveshot><A3Preview>imx350_sunny_zsl_preview_3a</A3Preview><A3Video>imx350_sunny_zsl_video_3a</A3Video></ChromatixName><ChromatixName sensor_resolution_index="1"><ISPCommon>imx350_sunny_common_oz</ISPCommon><ISPPreview>imx350_sunny_oz_preview</ISPPreview><ISPSnapshot>imx350_sunny_oz_snapshot</ISPSnapshot><ISPVideo>imx350_sunny_oz_preview</ISPVideo><CPPPreview>imx350_sunny_cpp_oz_preview</CPPPreview><CPPSnapshot>imx350_sunny_cpp_oz_snapshot</CPPSnapshot><CPPVideo>imx350_sunny_cpp_oz_preview</CPPVideo><CPPLiveshot>imx350_sunny_cpp_liveshot</CPPLiveshot><A3Preview>imx350_sunny_oz_preview_3a</A3Preview><A3Video>imx350_sunny_oz_preview_3a</A3Video></ChromatixName><ChromatixName sensor_resolution_index="2"><ISPCommon>imx350_sunny_common_bining</ISPCommon><ISPPreview>imx350_sunny_preview</ISPPreview><ISPSnapshot>imx350_sunny_snapshot</ISPSnapshot><ISPVideo>imx350_sunny_default_video</ISPVideo><CPPPreview>imx350_sunny_cpp_preview</CPPPreview><CPPSnapshot>imx350_sunny_cpp_snapshot</CPPSnapshot><CPPVideo>imx350_sunny_cpp_video</CPPVideo><CPPLiveshot>imx350_sunny_cpp_liveshot</CPPLiveshot><A3Preview>imx350_sunny_default_preview_3a</A3Preview><A3Video>imx350_sunny_default_video_3a</A3Video></ChromatixName><ChromatixName sensor_resolution_index="2" special_mode_mask="SCENE_BOKEH_MODE|"><ISPCommon>imx350_sunny_common_bining</ISPCommon><ISPPreview>imx350_sunny_preview_bokeh</ISPPreview><ISPSnapshot>imx350_sunny_preview_bokeh</ISPSnapshot><ISPVideo>imx350_sunny_default_video</ISPVideo><CPPPreview>imx350_sunny_cpp_preview</CPPPreview><CPPSnapshot>imx350_sunny_cpp_snapshot</CPPSnapshot><CPPVideo>imx350_sunny_cpp_video</CPPVideo><CPPLiveshot>imx350_sunny_cpp_liveshot</CPPLiveshot><A3Preview>imx350_sunny_default_preview_3a</A3Preview><A3Video>imx350_sunny_default_video_3a</A3Video></ChromatixName><ChromatixName sensor_resolution_index="3"><ISPCommon>imx350_sunny_common</ISPCommon><ISPPreview>imx350_sunny_hfr_90</ISPPreview><ISPSnapshot>imx350_sunny_hfr_90</ISPSnapshot><ISPVideo>imx350_sunny_hfr_90</ISPVideo><CPPPreview>imx350_sunny_cpp_hfr_90</CPPPreview><CPPSnapshot>imx350_sunny_cpp_hfr_90</CPPSnapshot><CPPVideo>imx350_sunny_cpp_hfr_90</CPPVideo><CPPLiveshot>imx350_sunny_cpp_liveshot</CPPLiveshot><A3Preview>imx350_sunny_hfr_90_3a</A3Preview><A3Video>imx350_sunny_hfr_90_3a</A3Video></ChromatixName><ChromatixName sensor_resolution_index="4"><ISPCommon>imx350_sunny_common</ISPCommon><ISPPreview>imx350_sunny_hfr_120</ISPPreview><ISPSnapshot>imx350_sunny_hfr_120</ISPSnapshot><ISPVideo>imx350_sunny_hfr_120</ISPVideo><CPPPreview>imx350_sunny_cpp_hfr_120</CPPPreview><CPPSnapshot>imx350_sunny_cpp_hfr_120</CPPSnapshot><CPPVideo>imx350_sunny_cpp_hfr_120</CPPVideo><CPPLiveshot>imx350_sunny_cpp_liveshot</CPPLiveshot><A3Preview>imx350_sunny_hfr_120_3a</A3Preview><A3Video>imx350_sunny_hfr_120_3a</A3Video></ChromatixName></ResolutionChromatixInfo> </ChromatixConfigurationRoot>

3.2 sdm660_camera.xml

<CameraConfigurationRoot><CameraModuleConfig><CameraId>0</CameraId> // camera id =0，注意和 dts 中 cell-index 一致<SensorName>imx362</SensorName> // sensor name , 這個名字用來找到對應的 sensor lib 庫，所以不能錯了<ActuatorName>ak7374</ActuatorName> // lens name ，用來找到對應的馬達驅動<EepromName>sony_imx362</EepromName> // eeprom name, 用來找到對應的eeprom驅動<ChromatixName>imx362_chromatix</ChromatixName> // chromatix name，用來找到對應的效果文件<FlashName>pmic</FlashName> // flashlight name, 用來找到 mm-camera2\media-controller\modules\sensors\flash\libs 下面對應的庫<ModesSupported>1</ModesSupported><Position>BACK</Position> // 后攝<MountAngle>90</MountAngle> // 旋轉90度，注意和 dts 中配置的一樣<CSIInfo><CSIDCore>0</CSIDCore> // CS 0<LaneMask>0x1F</LaneMask> // 4 lane 和 1 clk 同時使能<LaneAssign>0x4320</LaneAssign><ComboMode>0</ComboMode></CSIInfo><LensInfo> // 馬達相關的參數，具體看模組 sepc<FocalLength>3.94</FocalLength><FNumber>1.9</FNumber><TotalFocusDistance>4.64</TotalFocusDistance><HorizontalViewAngle>70.4</HorizontalViewAngle><VerticalViewAngle>55.7</VerticalViewAngle><MinFocusDistance>0.1</MinFocusDistance></LensInfo></CameraModuleConfig><CameraModuleConfig><CameraId>1</CameraId> // camera id =1<SensorName>imx350</SensorName><ActuatorName>dw9800</ActuatorName><EepromName>sony_imx350</EepromName><ChromatixName>imx350_chromatix</ChromatixName><ModesSupported>1</ModesSupported><Position>BACK_AUX</Position> // 后二攝<MountAngle>90</MountAngle><CSIInfo><CSIDCore>1</CSIDCore> // CS 1<LaneMask>0x1F</LaneMask><LaneAssign>0x4320</LaneAssign><ComboMode>0</ComboMode></CSIInfo><LensInfo><FocalLength>5.3</FocalLength><FNumber>2.6</FNumber><TotalFocusDistance>5.0</TotalFocusDistance><HorizontalViewAngle>51.4</HorizontalViewAngle><VerticalViewAngle>40.0</VerticalViewAngle><MinFocusDistance>0.3</MinFocusDistance></LensInfo></CameraModuleConfig><CameraModuleConfig><CameraId>2</CameraId> // camera id =2<SensorName>s5k4h7yx</SensorName><EepromName>holitech_s5k4h7yx</EepromName><ChromatixName>s5k4h7yx_chromatix</ChromatixName><ModesSupported>1</ModesSupported><Position>FRONT</Position> // 前攝<MountAngle>270</MountAngle> // 旋轉270度<CSIInfo><CSIDCore>2</CSIDCore> // CS2<LaneMask>0x1F</LaneMask><LaneAssign>0x4320</LaneAssign><ComboMode>0</ComboMode></CSIInfo><LensInfo> // 馬達相關參數<FocalLength>2.47</FocalLength><FNumber>2.0</FNumber><TotalFocusDistance>1.9</TotalFocusDistance><HorizontalViewAngle>63.84</HorizontalViewAngle><VerticalViewAngle>47.88</VerticalViewAngle><MinFocusDistance>0.1</MinFocusDistance></LensInfo></CameraModuleConfig> </CameraConfigurationRoot>

3.3 sensors_configs_Android.mk

@\vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\configs\Android.mk 在 Android.mk 中，添加 xml 編譯。ifeq ($(call is-board-platform-in-list, sdm660),true) include $(CLEAR_VARS) LOCAL_MODULE:= camera_config.xml LOCAL_MODULE_CLASS := EXECUTABLES LOCAL_SRC_FILES := sdm660_camera.xml LOCAL_MODULE_TAGS := optional LOCAL_MODULE_PATH := $(TARGET_OUT)/etc/camera LOCAL_MODULE_OWNER := qti include $(BUILD_PREBUILT)include $(CLEAR_VARS) LOCAL_MODULE:= imx350_sunny.xml LOCAL_MODULE_CLASS := EXECUTABLES LOCAL_SRC_FILES := imx350_sunny.xml LOCAL_MODULE_TAGS := optional LOCAL_MODULE_PATH := $(TARGET_OUT)/etc/camera LOCAL_MODULE_OWNER := qti include $(BUILD_PREBUILT)

4. 導入 Camera AF 馬達lib庫代碼

在前面sdm660_camera.xml中，我們可以看出，
使用了 <ActuatorName>ak7374</ActuatorName>和<ActuatorName>dw9800</ActuatorName>這兩種馬達。

馬達lib庫代碼位于@vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\actuator\libs中。

從 Android.mk中可以看出，各模塊名字為：
LOCAL_MODULE := libactuator_dw9800
LOCAL_MODULE := libactuator_ak7374

導入代碼后，在 @\vendor\qcom\proprietary\common\config\device-vendor.mk
中添加如下代碼，將模塊導入進來：
MM_CAMERA += libactuator_dw9800
MM_CAMERA += libactuator_ak7374

5. 導入 Camera Flashlight 閃光燈lib庫代碼

在前面sdm660_camera.xml中，可以看出flashlight 使用的是默認的 <FlashName>pmic</FlashName>驅動。

代碼位置在 @\vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\flash\libs\pmic

在Android.mk中，模塊名字為：
LOCAL_MODULE := libflash_pmic

導入代碼后，在 @\vendor\qcom\proprietary\common\config\device-vendor.mk中添加如下代碼，將模塊導入進來：
MM_CAMERA += libflash_pmic

6. 導入 Camera Eeprom OTP lib庫代碼

在前面sdm660_camera.xml中，可以看出Eeprom使用的是默認的 <EepromName>sony_imx362</EepromName>和<EepromName>sony_imx350</EepromName>驅動。
代碼位置在 @\vendor\qcom\proprietary\mm-camera\mm-camera2\media-controller\modules\sensors\eeprom\libs\sony_imx350

在Android.mk中，模塊名字為：
LOCAL_MODULE := libmmcamera_sony_imx350_eeprom

導入代碼后，在 @\vendor\qcom\proprietary\common\config\device-vendor.mk中添加如下代碼，將模塊導入進來：
MM_CAMERA += libmmcamera_sony_imx350_eeprom

好，至此，camera 代碼移植相關的工作就完了，如果這些相關的文件都配置正確的話，
接下來您就可以，編譯下載看下是否正常點亮，及抓log 調試下。

三、擴展

擴展一、 interrupts 中斷節點解析

interrupts = <0 78 0>;

（1）interrupt type

上述代碼中，interrupts 屬性中的第一個0是指 interrupt type。

在Linux系統中，它可以管理4種類型的中斷：

外設中斷（Peripheral interrupt）
根據目標CPU的不同，外設的中斷可以分成PPI（Private Peripheral Interrupt）和SPI（Shared Peripheral Interrupt）。
PPI只能分配給一個確定的processor，而SPI可以由Distributor將中斷分配給一組Processor中的一個進行處理。
外設類型的中斷一般通過一個interrupt request line的硬件信號線連接到中斷控制器，
可能是電平觸發的（Level-sensitive），也可能是邊緣觸發的（Edge-triggered）。

軟件觸發的中斷（SGI，Software-generated interrupt）
軟件可以通過寫GICD_SGIR寄存器來觸發一個中斷事件，這樣的中斷，可以用于processor之間的通信。
SGI用于processor之間的通信，和外設無關。

虛擬中斷（Virtual interrupt）

Maintenance interrupt

（2）interrupt number

interrupts 屬性中的第二個78是指該外設使用的GIC interrupt ID號。

GIC最大支持1020個HW interrupt ID，具體的ID分配情況如下：

ID0 ~ ID31
ID0 ~ ID31是用于分發到一個特定的process的interrupt。
標識這些interrupt不能僅僅依靠ID，因為各個interrupt source都用同樣的ID0 ~ ID31來標識，
因此識別這些interrupt需要interrupt ID ＋ CPU interface number。

ID0 ~ ID15用于SGI，SGI是通過寫GICD_SGIR寄存器而觸發的中斷，Distributor通過processor source ID、中斷ID和target processor ID來唯一識別一個SGI
ID16 ~ ID31用于PPI，PPI類型的中斷會送到指定的process上，和其他的process無關。

ID32 ~ ID1019
ID32 ~ ID1019 用于SPI

（3）trigger type

觸發類型包括如下四種：

上升沿觸發
下降沿觸發
高電平觸發
低電平觸發
各自代碼定義如下：

bits[3:0] trigger type and level flags.1 = low-to-high edge triggered 上升沿觸發2 = high-to-low edge triggered (invalid for SPIs) 下降沿觸發4 = active high level-sensitive 高電平觸發8 = active low level-sensitive (invalid for SPIs) 低電平觸發

而代碼中 interrupts = <0 78 0>;
其中第三個的0 ，說明在DTS中并沒有初始化中斷觸發類型，內核通過request irq申請中斷的時候再來設置中斷觸發類型。

有關interrupt 相關的可以參考網友的文章：
《Linux DTS中和中斷相關屬性的解釋和用法》
《設備樹中中斷節點的創建》

擴展二、光學防抖 OIS

光學防抖OIS，全稱OpticalImage Stabilization，從字面理解就是穩定的光學圖像。其工作原理是基于陀螺儀檢測并進行位移補償。即通過鏡頭內的陀螺儀偵測手機抖動產生的微小移動，然后將信號傳至CPU處理，CPU會即刻計算需要補償的位移量，再根據計算結果移動相機鏡片組中的懸浮鏡片，以抵消抖動產生的微小位移，從而有效克服因相機振動產生的影像模糊。

光學防抖的用處

提升暗光拍攝品質
夜景拍攝時，往往需要較長的曝光時間，此時快門速度較慢，手抖對于成像的影響就尤其明顯。使用光學防抖后，就可以削弱抖動影響，對各種抖動作相應的補償，有類似于三腳架的功效，能有效提高暗光下照片的質量。

穩定拍攝，提高視頻穩定性
錄制視頻時，錄制者的移動，走動，會帶來畫面跳動。使用光學防抖后，對由此產生的額外抖動作光學補償后，可減少畫面跳動，增強視頻連貫性；同時，光學防抖還能保證每一幀畫面的清晰度，使畫面中的字跡、綠植等紋理部分仍清晰可見。

原文鏈接：https://blog.csdn.net/Ciellee/article/details/105409928

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