// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2019 MediaTek Inc. */ /* * BU63165AF voice coil motor driver * * */ #include #include #include #include #include "OIS_head.h" #include "lens_info.h" #define AF_DRVNAME "BU63165AF_DRV" #define AF_I2C_SLAVE_ADDR 0x1c #define EEPROM_I2C_SLAVE_ADDR 0xa0 #define AF_DEBUG #ifdef AF_DEBUG #define LOG_INF(format, args...) \ pr_debug(AF_DRVNAME " [%s] " format, __func__, ##args) #else #define LOG_INF(format, args...) #endif static struct i2c_client *g_pstAF_I2Cclient; static int *g_pAF_Opened; static spinlock_t *g_pAF_SpinLock; static unsigned long g_u4AF_INF; static unsigned long g_u4AF_MACRO = 1023; static unsigned long g_u4CurrPosition; int s4EEPROM_ReadReg_BU63165AF(u16 addr, u16 *data) { u8 u8data[2]; u8 pu_send_cmd[2] = {(u8)(addr >> 8), (u8)(addr & 0xFF)}; g_pstAF_I2Cclient->addr = (EEPROM_I2C_SLAVE_ADDR) >> 1; if (i2c_master_send(g_pstAF_I2Cclient, pu_send_cmd, 2) < 0) { LOG_INF("read I2C send failed!!\n"); return -1; } if (i2c_master_recv(g_pstAF_I2Cclient, u8data, 2) < 0) { LOG_INF("EEPROM_ReadReg failed!!\n"); return -1; } LOG_INF("u8data[0] = 0x%x\n", u8data[0]); LOG_INF("u8data[1] = 0x%x\n", u8data[1]); *data = u8data[1] << 8 | u8data[0]; LOG_INF("s4EEPROM_ReadReg2 0x%x, 0x%x\n", addr, *data); return 0; } int s4AF_WriteReg_BU63165AF(u16 i2c_id, u8 *a_pSendData, u16 a_sizeSendData) { int i4RetValue = 0; spin_lock(g_pAF_SpinLock); g_pstAF_I2Cclient->addr = i2c_id >> 1; spin_unlock(g_pAF_SpinLock); i4RetValue = i2c_master_send(g_pstAF_I2Cclient, a_pSendData, a_sizeSendData); if (i4RetValue != a_sizeSendData) { LOG_INF("I2C send failed!!, Addr = 0x%x, Data = 0x%x\n", a_pSendData[0], a_pSendData[1]); return -1; } return 0; } int s4AF_ReadReg_BU63165AF(u16 i2c_id, u8 *a_pSendData, u16 a_sizeSendData, u8 *a_pRecvData, u16 a_sizeRecvData) { int i4RetValue; struct i2c_msg msg[2]; spin_lock(g_pAF_SpinLock); g_pstAF_I2Cclient->addr = i2c_id >> 1; spin_unlock(g_pAF_SpinLock); msg[0].addr = g_pstAF_I2Cclient->addr; msg[0].flags = 0; msg[0].len = a_sizeSendData; msg[0].buf = a_pSendData; msg[1].addr = g_pstAF_I2Cclient->addr; msg[1].flags = I2C_M_RD; msg[1].len = a_sizeRecvData; msg[1].buf = a_pRecvData; i4RetValue = i2c_transfer(g_pstAF_I2Cclient->adapter, msg, ARRAY_SIZE(msg)); if (i4RetValue != 2) { LOG_INF("I2C Read failed!!\n"); return -1; } return 0; } static inline int getAFInfo(__user struct stAF_MotorInfo *pstMotorInfo) { struct stAF_MotorInfo stMotorInfo; stMotorInfo.u4MacroPosition = g_u4AF_MACRO; stMotorInfo.u4InfPosition = g_u4AF_INF; stMotorInfo.u4CurrentPosition = g_u4CurrPosition; stMotorInfo.bIsSupportSR = 1; stMotorInfo.bIsMotorMoving = 1; if (*g_pAF_Opened >= 1) stMotorInfo.bIsMotorOpen = 1; else stMotorInfo.bIsMotorOpen = 0; if (copy_to_user(pstMotorInfo, &stMotorInfo, sizeof(struct stAF_MotorInfo))) LOG_INF("copy to user failed when getting motor information\n"); return 0; } /* initAF include driver initialization and standby mode */ static int initAF(void) { LOG_INF("+\n"); if (*g_pAF_Opened == 1) { Main_OIS(); spin_lock(g_pAF_SpinLock); *g_pAF_Opened = 2; spin_unlock(g_pAF_SpinLock); } LOG_INF("-\n"); return 0; } /* moveAF only use to control moving the motor */ static inline int moveAF(unsigned long a_u4Position) { int ret = 0; if (setVCMPos((unsigned short)a_u4Position) == 0) { g_u4CurrPosition = a_u4Position; ret = 0; } else { LOG_INF("set I2C failed when moving the motor\n"); ret = -1; } return ret; } static inline int setAFInf(unsigned long a_u4Position) { spin_lock(g_pAF_SpinLock); g_u4AF_INF = a_u4Position; spin_unlock(g_pAF_SpinLock); return 0; } static inline int setAFMacro(unsigned long a_u4Position) { spin_lock(g_pAF_SpinLock); g_u4AF_MACRO = a_u4Position; spin_unlock(g_pAF_SpinLock); return 0; } static inline int setAFPara(__user struct stAF_MotorCmd *pstMotorCmd) { struct stAF_MotorCmd stMotorCmd; if (copy_from_user(&stMotorCmd, pstMotorCmd, sizeof(stMotorCmd))) LOG_INF("copy to user failed when getting motor command\n"); LOG_INF("Motor CmdID : %x\n", stMotorCmd.u4CmdID); LOG_INF("Motor Param : %x\n", stMotorCmd.u4Param); switch (stMotorCmd.u4CmdID) { case 1: setOISMode((int)stMotorCmd.u4Param); /* 1 : disable */ break; } return 0; } /* ////////////////////////////////////////////////////////////// */ long BU63165AF_Ioctl(struct file *a_pstFile, unsigned int a_u4Command, unsigned long a_u4Param) { long i4RetValue = 0; switch (a_u4Command) { case AFIOC_G_MOTORINFO: i4RetValue = getAFInfo((__user struct stAF_MotorInfo *)(a_u4Param)); break; case AFIOC_T_MOVETO: i4RetValue = moveAF(a_u4Param); break; case AFIOC_T_SETINFPOS: i4RetValue = setAFInf(a_u4Param); break; case AFIOC_T_SETMACROPOS: i4RetValue = setAFMacro(a_u4Param); break; case AFIOC_S_SETPARA: i4RetValue = setAFPara((__user struct stAF_MotorCmd *)(a_u4Param)); break; default: LOG_INF("No CMD\n"); i4RetValue = -EPERM; break; } return i4RetValue; } /* Main jobs: */ /* 1.Deallocate anything that "open" allocated in private_data. */ /* 2.Shut down the device on last close. */ /* 3.Only called once on last time. */ /* Q1 : Try release multiple times. */ int BU63165AF_Release(struct inode *a_pstInode, struct file *a_pstFile) { LOG_INF("Start\n"); if (*g_pAF_Opened == 2) { LOG_INF("Wait\n"); OIS_Standby(); msleep(20); } if (*g_pAF_Opened) { LOG_INF("Free\n"); spin_lock(g_pAF_SpinLock); *g_pAF_Opened = 0; spin_unlock(g_pAF_SpinLock); } LOG_INF("End\n"); return 0; } int BU63165AF_SetI2Cclient(struct i2c_client *pstAF_I2Cclient, spinlock_t *pAF_SpinLock, int *pAF_Opened) { g_pstAF_I2Cclient = pstAF_I2Cclient; g_pAF_SpinLock = pAF_SpinLock; g_pAF_Opened = pAF_Opened; LOG_INF("SetI2Cclient\n"); initAF(); return 1; } int BU63165AF_GetFileName(unsigned char *pFileName) { #if SUPPORT_GETTING_LENS_FOLDER_NAME char FilePath[256]; char *FileString; sprintf(FilePath, "%s", __FILE__); FileString = strrchr(FilePath, '/'); *FileString = '\0'; FileString = (strrchr(FilePath, '/') + 1); strncpy(pFileName, FileString, AF_MOTOR_NAME); LOG_INF("FileName : %s\n", pFileName); #else pFileName[0] = '\0'; #endif return 1; }