308 lines
7.5 KiB
C
308 lines
7.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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/*
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* DW9763AF voice coil motor driver
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*
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*
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*/
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/i2c.h>
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#include <linux/uaccess.h>
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#include "lens_info.h"
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#define AF_DRVNAME "DW9763AF_DRV"
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#define AF_I2C_SLAVE_ADDR 0x18
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#define AF_DEBUG
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#ifdef AF_DEBUG
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#define LOG_INF(format, args...) \
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pr_debug(AF_DRVNAME " [%s] " format, __func__, ##args)
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#else
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#define LOG_INF(format, args...)
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#endif
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static struct i2c_client *g_pstAF_I2Cclient;
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static int *g_pAF_Opened;
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static spinlock_t *g_pAF_SpinLock;
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static unsigned long g_u4AF_INF;
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static unsigned long g_u4AF_MACRO = 1023;
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//static unsigned long g_u4TargetPosition;
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static unsigned long g_u4CurrPosition;
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static int i2c_read(u8 a_u2Addr, u8 *a_puBuff)
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{
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int i4RetValue = 0;
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char puReadCmd[1] = {(char)(a_u2Addr)};
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g_pstAF_I2Cclient->addr = AF_I2C_SLAVE_ADDR;
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g_pstAF_I2Cclient->addr = g_pstAF_I2Cclient->addr >> 1;
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i4RetValue = i2c_master_send(g_pstAF_I2Cclient, puReadCmd, 1);
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if (i4RetValue != 2) {
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LOG_INF(" I2C write failed!!\n");
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return -1;
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}
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i4RetValue = i2c_master_recv(g_pstAF_I2Cclient, (char *)a_puBuff, 1);
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if (i4RetValue != 1) {
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LOG_INF(" I2C read failed!!\n");
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return -1;
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}
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return 0;
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}
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u8 read_data(u8 addr)
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{
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u8 get_byte = 0;
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i2c_read(addr, &get_byte);
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return get_byte;
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}
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static int s4AF_WriteReg(u16 a_u2Data)
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{
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int i4RetValue = 0;
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char puSendCmd[2] = {(char)(0x03), (char)(a_u2Data >> 8)};
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char puSendCmd1[2] = {(char)(0x04), (char)(a_u2Data & 0xFF)};
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g_pstAF_I2Cclient->addr = AF_I2C_SLAVE_ADDR;
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g_pstAF_I2Cclient->addr = g_pstAF_I2Cclient->addr >> 1;
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i4RetValue = i2c_master_send(g_pstAF_I2Cclient, puSendCmd, 2);
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if (i4RetValue < 0) {
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LOG_INF("%s failed.\n", __func__);
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return -1;
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}
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i4RetValue = i2c_master_send(g_pstAF_I2Cclient, puSendCmd1, 2);
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if (i4RetValue < 0) {
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LOG_INF("%s failed.\n", __func__);
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return -1;
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}
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return 0;
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}
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static int AF_setconfig(void)
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{
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int Ret = 0;
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char puSendCmd2[2] = {(char)(0x02), (char)(0x02)};
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char puSendCmd3[2] = {(char)(0x06), (char)(0x61)};
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char puSendCmd4[2] = {(char)(0x07), (char)(0x39)};
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LOG_INF("Start\n");
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g_pstAF_I2Cclient->addr = AF_I2C_SLAVE_ADDR;
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g_pstAF_I2Cclient->addr = g_pstAF_I2Cclient->addr >> 1;
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Ret = i2c_master_send(g_pstAF_I2Cclient, puSendCmd2, 2);
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if (Ret < 0)
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LOG_INF("puSendCmd2 send failed\n");
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Ret = i2c_master_send(g_pstAF_I2Cclient, puSendCmd3, 2);
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if (Ret < 0)
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LOG_INF("puSendCmd3 send failed\n");
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Ret = i2c_master_send(g_pstAF_I2Cclient, puSendCmd4, 2);
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if (Ret < 0)
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LOG_INF("puSendCmd4 send failed\n");
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LOG_INF("End\n");
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return 0;
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}
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static inline int getAFInfo(__user struct stAF_MotorInfo *pstMotorInfo)
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{
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struct stAF_MotorInfo stMotorInfo;
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stMotorInfo.u4MacroPosition = g_u4AF_MACRO;
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stMotorInfo.u4InfPosition = g_u4AF_INF;
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stMotorInfo.u4CurrentPosition = g_u4CurrPosition;
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stMotorInfo.bIsSupportSR = 1;
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stMotorInfo.bIsMotorMoving = 1;
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if (*g_pAF_Opened >= 1)
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stMotorInfo.bIsMotorOpen = 1;
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else
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stMotorInfo.bIsMotorOpen = 0;
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if (copy_to_user(pstMotorInfo, &stMotorInfo,
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sizeof(struct stAF_MotorInfo)))
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LOG_INF("copy to user failed when getting motor information\n");
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return 0;
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}
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#ifdef LensdrvCM3
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static inline int getAFMETA(__user stAF_MotorMETAInfo * pstMotorMETAInfo)
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{
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stAF_MotorMETAInfo stMotorMETAInfo;
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stMotorMETAInfo.Aperture = 2.8; //fn
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stMotorMETAInfo.Facing = 1;
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stMotorMETAInfo.FilterDensity = 1; //X
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stMotorMETAInfo.FocalDistance = 1.0; //diopters
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stMotorMETAInfo.FocalLength = 34.0; //mm
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stMotorMETAInfo.FocusRange = 1.0; //diopters
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stMotorMETAInfo.InfoAvalibleApertures = 2.8;
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stMotorMETAInfo.InfoAvalibleFilterDensity = 1;
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stMotorMETAInfo.InfoAvalibleFocalLength = 34.0;
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stMotorMETAInfo.InfoAvalibleHypeDistance = 1.0;
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stMotorMETAInfo.InfoAvalibleMinFocusDistance = 1.0;
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stMotorMETAInfo.InfoAvalibleOptStabilization = 0;
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stMotorMETAInfo.OpticalAxisAng[0] = 0.0;
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stMotorMETAInfo.OpticalAxisAng[1] = 0.0;
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stMotorMETAInfo.Position[0] = 0.0;
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stMotorMETAInfo.Position[1] = 0.0;
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stMotorMETAInfo.Position[2] = 0.0;
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stMotorMETAInfo.State = 0;
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stMotorMETAInfo.u4OIS_Mode = 0;
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if (copy_to_user(pstMotorMETAInfo, &stMotorMETAInfo,
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sizeof(stAF_MotorMETAInfo)))
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LOG_INF("copy to user failed when getting motor information\n");
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return 0;
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}
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#endif
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/* initAF include driver initialization and standby mode */
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static int initAF(void)
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{
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LOG_INF("+\n");
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if (*g_pAF_Opened == 1) {
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AF_setconfig();
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spin_lock(g_pAF_SpinLock);
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*g_pAF_Opened = 2;
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spin_unlock(g_pAF_SpinLock);
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}
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LOG_INF("-\n");
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return 0;
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}
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/* moveAF only use to control moving the motor */
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static inline int moveAF(unsigned long a_u4Position)
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{
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int ret = 0;
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if (s4AF_WriteReg((unsigned short)a_u4Position) == 0) {
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g_u4CurrPosition = a_u4Position;
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ret = 0;
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} else {
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LOG_INF("set I2C failed when moving the motor\n");
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ret = -1;
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}
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return ret;
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}
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static inline int setAFInf(unsigned long a_u4Position)
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{
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spin_lock(g_pAF_SpinLock);
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g_u4AF_INF = a_u4Position;
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spin_unlock(g_pAF_SpinLock);
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return 0;
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}
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static inline int setAFMacro(unsigned long a_u4Position)
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{
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spin_lock(g_pAF_SpinLock);
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g_u4AF_MACRO = a_u4Position;
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spin_unlock(g_pAF_SpinLock);
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return 0;
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}
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/* ////////////////////////////////////////////////////////////// */
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long DW9763AF_Ioctl(struct file *a_pstFile, unsigned int a_u4Command,
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unsigned long a_u4Param)
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{
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long i4RetValue = 0;
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switch (a_u4Command) {
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case AFIOC_G_MOTORINFO:
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i4RetValue =
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getAFInfo((__user struct stAF_MotorInfo *)(a_u4Param));
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break;
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case AFIOC_T_MOVETO:
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i4RetValue = moveAF(a_u4Param);
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break;
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case AFIOC_T_SETINFPOS:
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i4RetValue = setAFInf(a_u4Param);
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break;
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case AFIOC_T_SETMACROPOS:
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i4RetValue = setAFMacro(a_u4Param);
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break;
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default:
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LOG_INF("No CMD\n");
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i4RetValue = -EPERM;
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break;
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}
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return i4RetValue;
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}
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/* Main jobs: */
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/* 1.Deallocate anything that "open" allocated in private_data. */
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/* 2.Shut down the device on last close. */
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/* 3.Only called once on last time. */
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/* Q1 : Try release multiple times. */
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int DW9763AF_Release(struct inode *a_pstInode, struct file *a_pstFile)
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{
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LOG_INF("Start\n");
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if (*g_pAF_Opened == 2) {
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LOG_INF("Wait\n");
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s4AF_WriteReg(0x80); /* Power down mode */
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}
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if (*g_pAF_Opened) {
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LOG_INF("Free\n");
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spin_lock(g_pAF_SpinLock);
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*g_pAF_Opened = 0;
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spin_unlock(g_pAF_SpinLock);
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}
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LOG_INF("End\n");
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return 0;
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}
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int DW9763AF_PowerDown(struct i2c_client *pstAF_I2Cclient,
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int *pAF_Opened)
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{
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g_pstAF_I2Cclient = pstAF_I2Cclient;
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g_pAF_Opened = pAF_Opened;
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LOG_INF("+\n");
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if (*g_pAF_Opened == 0) {
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int i4RetValue = 0;
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u8 data = 0x0;
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char puSendCmd[2] = {0x00, 0x01};
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g_pstAF_I2Cclient->addr = AF_I2C_SLAVE_ADDR;
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g_pstAF_I2Cclient->addr = g_pstAF_I2Cclient->addr >> 1;
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i4RetValue = i2c_master_send(g_pstAF_I2Cclient, puSendCmd, 2);
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data = read_data(0x00);
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LOG_INF("Addr:0x00 Data:0x%x\n", data);
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LOG_INF("apply - %d\n", i4RetValue);
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if (i4RetValue < 0)
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return -1;
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}
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LOG_INF("-\n");
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return 0;
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}
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int DW9763AF_SetI2Cclient(struct i2c_client *pstAF_I2Cclient,
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spinlock_t *pAF_SpinLock, int *pAF_Opened)
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{
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g_pstAF_I2Cclient = pstAF_I2Cclient;
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g_pAF_SpinLock = pAF_SpinLock;
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g_pAF_Opened = pAF_Opened;
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initAF();
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return 1;
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}
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int DW9763AF_GetFileName(unsigned char *pFileName)
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{
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#if SUPPORT_GETTING_LENS_FOLDER_NAME
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char FilePath[256];
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char *FileString;
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sprintf(FilePath, "%s", __FILE__);
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FileString = strrchr(FilePath, '/');
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*FileString = '\0';
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FileString = (strrchr(FilePath, '/') + 1);
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strncpy(pFileName, FileString, AF_MOTOR_NAME);
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LOG_INF("FileName : %s\n", pFileName);
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#else
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pFileName[0] = '\0';
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#endif
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return 1;
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}
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