为什么要分析 MSM_ACTUATOR_WRITE_DAC

目前的camx源码 省略了hw_mask 的处理。 一般来说 hw_mask 是0 ，但是对于非0情况 就会出现异常

mm-camera MSM_ACTUATOR_WRITE_DAC

驱动的处理

   	case MSM_ACTUATOR_WRITE_DAC:value = (next_lens_position <<write_arr[i].data_shift) |((hw_dword & write_arr[i].hw_mask) >>write_arr[i].hw_shift);if (write_arr[i].reg_addr != 0xFFFF) {i2c_byte1 = write_arr[i].reg_addr;i2c_byte2 = value;} else {i2c_byte1 = (value & 0xFF00) >> 8;i2c_byte2 = value & 0xFF;}i2c_tbl.reg_addr = i2c_byte1;i2c_tbl.reg_data = i2c_byte2;i2c_tbl.delay = delay;a_ctrl->i2c_tbl_index++;reg_setting.reg_setting = &i2c_tbl;reg_setting.data_type = a_ctrl->i2c_data_type;rc = a_ctrl->i2c_client.i2c_func_tbl->i2c_write_table_w_microdelay(&a_ctrl->i2c_client, &reg_setting);if (rc < 0) {pr_err("i2c write error:%d\n", rc);return rc;}break;

马达dw9714设置

      .reg_tbl ={.reg_tbl_size = 1,.reg_params ={{.reg_write_type = ACTUATOR_WRITE_DAC,.hw_mask = 0x0000000F,.reg_addr = 0xFFFF,.hw_shift = 0,.data_shift = 4,},},},

camx MSM_ACTUATOR_WRITE_DAC

驱动处理

            case ActuatorOperation::WRITE_DAC_VALUE:pWriteCmd                  = reinterpret_cast<CSLSensorI2CRandomWriteCmd*>(static_cast<BYTE*>(pCmdBuffer) + offset);pWriteCmd->header.count    = 1;pWriteCmd->header.opcode   = CSLSensorI2COpcodeRandomWrite;pWriteCmd->header.cmdType  = CSLSensorCmdTypeI2CRandomRegWrite;pWriteCmd->header.dataType = static_cast<UINT8>(pRegConfigTable->registerParam[i].regDataType);pWriteCmd->header.addrType = static_cast<UINT8>(pRegConfigTable->registerParam[i].regAddrType);pWriteCmd->regValPairs[0].reg = pRegConfigTable->registerParam[i].registerAddr;pWriteCmd->regValPairs[0].val = targetPositionDAC << pRegConfigTable->registerParam[i].dataShift;offset += sizeof(CSLSensorI2CRandomWriteCmd);break;

马达dw9714设置

  <!--Sequence of register configuration --><registerConfig><!--Actuator register configuration --><registerParam><!--Register address / data size in bytes --><regAddrType range="[1,4]">1</regAddrType><!--Register address / data size in bytes --><regDataType range="[1,4]">1</regDataType><!--Register address that is accessed --><registerAddr>0xFFFF</registerAddr><!--Register data to be programmed --><registerData>0</registerData><!--Actuator operationsSupported operations are: WRITE_HW_DAMP, WRITE_DAC, WRITE, WRITE_DIR_REG, POLL, READ_WRITE --><operation>WRITE_DAC_VALUE</operation><!--Delay in micro seconds --><delayUs>0</delayUs><!--Hardware mask --><hwMask>0x0000000F</hwMask><!--Number of bits to shift for HW --><hwShift>0</hwShift><!--Number of bits to shift for data --><dataShift>4</dataShift></registerParam></registerConfig>

总结

mm-camera架构成熟 对hwMask有进行处理
如果需要处理hwMask,思路就是对照mm-camera 打patch
马达还是那个马达 工作流程没有变