版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/mike8825/article/details/80268397
这里以mt6737t为例
1、编译摄像头驱动
device/lentek/xxxxxx/ProjectConfig.mk
kernel-3.18/arch/arm64/configs/xxxxx_defconfig
kernel-3.18/drivers/misc/mediatek/imgsensor/src/mt6735/
kernel-3.18/drivers/misc/mediatek/imgsensor/inc/kd_imgsensor.h
2、上电
kernel-3.18/drivers/misc/mediatek/imgsensor/src/mt6735/camera_hw/kd_camera_hw.c
3、hal修改
device/mediatek/common/kernel-headers/kd_imgsensor.h
vendor/mediatek/proprietary/custom/mt6735/hal/D1/imgsensor_src/sensorlist.cpp
vendor/mediatek/proprietary/custom/mt6735/hal/D1/imgsensor/
上电过程小析
对于后摄,上电时上的是后摄的电源,所以前摄的id匹配不上。(前摄同理于后摄)
1、编译摄像头驱动
device/lentek/xxxxxx/ProjectConfig.mk
kernel-3.18/arch/arm64/configs/xxxxx_defconfig
kernel-3.18/drivers/misc/mediatek/imgsensor/src/mt6735/
kernel-3.18/drivers/misc/mediatek/imgsensor/inc/kd_imgsensor.h
2、上电
kernel-3.18/drivers/misc/mediatek/imgsensor/src/mt6735/camera_hw/kd_camera_hw.c
3、hal修改
device/mediatek/common/kernel-headers/kd_imgsensor.h
vendor/mediatek/proprietary/custom/mt6735/hal/D1/imgsensor_src/sensorlist.cpp
vendor/mediatek/proprietary/custom/mt6735/hal/D1/imgsensor/
上电过程小析
vendor/mediatek/proprietary/hardware/mtkcam/legacy/platform/mt6735/hal/sensor/imgsensor_drv.c
MINT32 ImgSensorDrv::impSearchSensor(pfExIdChk pExIdChkCbf)
for (SensorEnum = 0; SensorEnum <= 2; SensorEnum <<= 1) {
for (i = 0; i < MAX_NUM_OF_SUPPORT_SENSOR; i++) {
if (m_pstSensorInitFunc[i].getCameraDefault == NULL) {
LOG_MSG("m_pstSensorInitFunc[i].getCameraDefault is NULL: %d \n", i);
break;
}
ioctl(m_fdSensor, KDIMGSENSORIOC_X_SET_DRIVER,&id[KDIMGSENSOR_INVOKE_DRIVER_0] );
ioctl(m_fdSensor, KDIMGSENSORIOC_T_CHECK_IS_ALIVE);
}
}
先找后摄,再找前摄(遍历所有摄像头 上电 匹配id)
对于后摄,上电时上的是后摄的电源,所以前摄的id匹配不上。(前摄同理于后摄)
这里,后摄兼容3颗sensor,分别是ov5695,ov8856,gc5025,前摄为sp2509,打印如下
2565:01-12 23:25:57.130 454 454 D ImgSensorDrv: [impSearchSensor]SENSOR search start
2566:01-12 23:25:57.130 454 454 D ImgSensorDrv: [impSearchSensor]impSearchSensor search to sub
2567:01-12 23:25:57.130 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =10000
2706:01-12 23:25:57.317 454 454 D ImgSensorDrv: [impSearchSensor][impSearchSensor] Err-ctrlCode (I/O error)
2710:01-12 23:25:57.317 454 454 D ImgSensorDrv: [impSearchSensor]sensor ID mismatch
2711:01-12 23:25:57.317 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =10001
2876:01-12 23:25:57.473 454 454 D ImgSensorDrv: [impSearchSensor][impSearchSensor] Err-ctrlCode (I/O error)
2880:01-12 23:25:57.482 454 454 D ImgSensorDrv: [impSearchSensor]sensor ID mismatch
2881:01-12 23:25:57.482 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =10002
3294:01-12 23:25:57.810 454 454 D ImgSensorDrv: [impSearchSensor]found <0x5025/gc5025mipiraw/SENSOR_DRVNAME_GC5025_MIPI_RAW>
3295:01-12 23:25:57.810 454 454 D ImgSensorDrv: [impSearchSensor]MAIN sensor found:[2]/[0x10002]/[0]/[1]
3296:01-12 23:25:57.810 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =10003
3521:01-12 23:25:58.118 454 454 D ImgSensorDrv: [impSearchSensor][impSearchSensor] Err-ctrlCode (I/O error)
3525:01-12 23:25:58.118 454 454 D ImgSensorDrv: [impSearchSensor]sensor ID mismatch
3526:01-12 23:25:58.118 454 454 D ImgSensorDrv: [impSearchSensor]m_pstSensorInitFunc[i].getCameraDefault is NULL: 4
3527:01-12 23:25:58.118 454 454 D ImgSensorDrv: [impSearchSensor]impSearchSensor search to sub
3528:01-12 23:25:58.119 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =20000
3529:01-12 23:25:58.119 454 454 D ImgSensorDrv: [impSearchSensor][impSearchSensor] Err-ctrlCode (I/O error)
3537:01-12 23:25:58.121 454 454 D ImgSensorDrv: [impSearchSensor]sensor ID mismatch
3538:01-12 23:25:58.121 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =20001
3539:01-12 23:25:58.121 454 454 D ImgSensorDrv: [impSearchSensor][impSearchSensor] Err-ctrlCode (I/O error)
3543:01-12 23:25:58.122 454 454 D ImgSensorDrv: [impSearchSensor]sensor ID mismatch
3544:01-12 23:25:58.122 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =20002
3875:01-12 23:25:58.547 454 454 D ImgSensorDrv: [impSearchSensor][impSearchSensor] Err-ctrlCode (I/O error)
3879:01-12 23:25:58.550 454 454 D ImgSensorDrv: [impSearchSensor]sensor ID mismatch
3880:01-12 23:25:58.550 454 454 D ImgSensorDrv: [impSearchSensor]set sensor driver id =20003
3937:01-12 23:25:58.782 454 454 D ImgSensorDrv: [impSearchSensor]found <0x2509/sp2509mipiraw/SENSOR_DRVNAME_SP2509_MIPI_RAW>
3938:01-12 23:25:58.782 454 454 D ImgSensorDrv: [impSearchSensor]SUB sensor found:[3]/[0x20003]/[0]/[-1]
3939:01-12 23:25:58.782 454 454 D ImgSensorDrv: [impSearchSensor]m_pstSensorInitFunc[i].getCameraDefault is NULL: 4
3940:01-12 23:25:58.782 454 454 D ImgSensorDrv: [impSearchSensor]SENSOR search end: 0x3 /[0x5025][2]/[0xffffff][255]/[0x2509][3]
kernel-3.18/drivers/misc/mediatek/imgsensor/src/mt6735/kd_sensorlist.c
case KDIMGSENSORIOC_X_SET_DRIVER:
i4RetValue = kdSetDriver((unsigned int *)pBuff);
break;
case KDIMGSENSORIOC_T_CHECK_IS_ALIVE:
i4RetValue = adopt_CAMERA_HW_CheckIsAlive();
break;
int kdSetDriver(unsigned int *pDrvIndex)
{
pSensorList[drvIdx[i]].SensorInit(&g_pInvokeSensorFunc[i]);
memcpy((char *)g_invokeSensorNameStr[i], (char *)pSensorList[drvIdx[i]].drvname, sizeof(pSensorList[drvIdx[i]].drvname));
//获取摄像头的名字
}
kernel-3.18/drivers/misc/mediatek/imgsensor/src/mt6735/camera_hw/kd_camera_hw.c
adopt_CAMERA_HW_CheckIsAlive(void){
if(0!=kdModulePowerOn((CAMERA_DUAL_CAMERA_SENSOR_ENUM *)g_invokeSocketIdx, g_invokeSensorNameStr, true, CAMERA_HW_DRVNAME1)){
return -EIO;
}
err = g_pSensorFunc->SensorFeatureControl(g_invokeSocketIdx[i], SENSOR_FEATURE_CHECK_SENSOR_ID, (MUINT8 *)&sensorID, &retLen);
//读sensor id
}
kdModulePowerOn调用kdCISModulePowerOn
int kdCISModulePowerOn(CAMERA_DUAL_CAMERA_SENSOR_ENUM SensorIdx, char *currSensorName, bool On, char *mode_name)
{
............
if(currSensorName && (0 == strcmp(SENSOR_DRVNAME_GC5025_MIPI_RAW, currSensorName))) {
if (GPIO_CAMERA_INVALID != pinSet[pinSetIdx][IDX_PS_CMPDN])
mtkcam_gpio_set(pinSetIdx, CAMPDN, pinSet[pinSetIdx][IDX_PS_CMPDN + IDX_PS_OFF]);
if (GPIO_CAMERA_INVALID != pinSet[pinSetIdx][IDX_PS_CMRST])
mtkcam_gpio_set(pinSetIdx, CAMRST, pinSet[pinSetIdx][IDX_PS_CMRST + IDX_PS_OFF]);
mdelay(50);
/* VCAM_IO */
if (TRUE != _hwPowerOn(VCAMIO, VOL_1800)) {
PK_DBG("[CAMERA SENSOR] Fail to enable IO power (VCAM_IO),power id = %d\n", VCAMIO);
goto _kdCISModulePowerOn_exit_;
}
mdelay(10);
if (TRUE != _hwPowerOn(VCAMD, VOL_1500)) {
PK_DBG("[CAMERA SENSOR] Fail to enable digital power (VCAM_D),power id = %d\n", VCAMD);
goto _kdCISModulePowerOn_exit_;
}
mdelay(10);
/* VCAM_A */
if (TRUE != _hwPowerOn(VCAMA, VOL_2800)) {
PK_DBG("[CAMERA SENSOR] Fail to enable analog power (VCAM_A),power id = %d\n", VCAMA);
goto _kdCISModulePowerOn_exit_;
}
mdelay(10);
/* AF_VCC */
if (TRUE != _hwPowerOn(VCAMAF, VOL_2800)) {
PK_DBG("[CAMERA SENSOR] Fail to enable analog power (VCAM_AF),power id = %d\n", VCAMAF);
goto _kdCISModulePowerOn_exit_;
}
mdelay(10);
/* enable active sensor */
if (GPIO_CAMERA_INVALID != pinSet[pinSetIdx][IDX_PS_CMPDN]) {
mtkcam_gpio_set(pinSetIdx, CAMPDN, pinSet[pinSetIdx][IDX_PS_CMPDN + IDX_PS_ON]);
mdelay(5);
}
if (GPIO_CAMERA_INVALID != pinSet[pinSetIdx][IDX_PS_CMRST]) {
mtkcam_gpio_set(pinSetIdx, CAMRST, pinSet[pinSetIdx][IDX_PS_CMRST + IDX_PS_ON]);
mdelay(5);
}
}
............
}