From f4fb5b28c2cffb108b392b2c8c9901fefb5e0bbe Mon Sep 17 00:00:00 2001 From: Wang Panzhenzhuan Date: Thu, 2 Jun 2022 06:59:56 +0000 Subject: [PATCH] media: i2c: add vcm driver cn3927v Signed-off-by: Wang Panzhenzhuan Change-Id: Iebe883899e7f9bd7ba85142f030129b6c4bf02ea --- drivers/media/i2c/Kconfig | 11 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/cn3927v.c | 1386 +++++++++++++++++++++++++++++++++++ 3 files changed, 1398 insertions(+) create mode 100644 drivers/media/i2c/cn3927v.c diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index a91c693fd2c8..7737edc5b38f 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -1965,6 +1965,17 @@ config VIDEO_AW8601 capability. This is designed for linear control of voice coil motors, controlled via I2C serial interface. +config VIDEO_CN3927V + tristate "CN3927V lens voice coil support" + depends on I2C && VIDEO_V4L2 + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + help + This is a driver for the CN3927V camera lens voice coil. + CN3927V is a 10 bit DAC with 120mA output current sink + capability. This is designed for linear control of + voice coil motors, controlled via I2C serial interface. + config VIDEO_DW9714 tristate "DW9714 lens voice coil support" depends on I2C && VIDEO_V4L2 diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index 1eff331a7b6c..fd39f46b9067 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_VIDEO_SAA6752HS) += saa6752hs.o obj-$(CONFIG_VIDEO_AD5820) += ad5820.o obj-$(CONFIG_VIDEO_AK7375) += ak7375.o obj-$(CONFIG_VIDEO_AW8601) += aw8601.o +obj-$(CONFIG_VIDEO_CN3927V) += cn3927v.o obj-$(CONFIG_VIDEO_DW9714) += dw9714.o obj-$(CONFIG_VIDEO_DW9768) += dw9768.o obj-$(CONFIG_VIDEO_DW9800W) += dw9800w.o diff --git a/drivers/media/i2c/cn3927v.c b/drivers/media/i2c/cn3927v.c new file mode 100644 index 000000000000..1442eaeb5407 --- /dev/null +++ b/drivers/media/i2c/cn3927v.c @@ -0,0 +1,1386 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * cn3927v vcm driver + * + * Copyright (C) 2022 Rockchip Electronics Co., Ltd. + */ + +//#define DEBUG +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define OF_CAMERA_VCMDRV_EDLC_ENABLE "rockchip,vcm-edlc-enable" + +#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x0) +#define CN3927V_NAME "cn3927v" + +#define CN3927V_MAX_CURRENT 120U +#define CN3927V_MAX_REG 1023U +#define CN3927V_GRADUAL_MOVELENS_STEPS 32 + +#define CN3927V_DEFAULT_START_CURRENT 0 +#define CN3927V_DEFAULT_RATED_CURRENT 100 +#define CN3927V_DEFAULT_STEP_MODE 0xd +#define CN3927V_DEFAULT_EDLC_EN 0x0 +#define CN3927V_DEFAULT_DLC_EN 0x0 +#define CN3927V_DEFAULT_MCLK 0x0 +#define CN3927V_DEFAULT_T_SRC 0x0 +#define REG_NULL 0xFF + +/* cn3927v advanced mode */ +#define CN3927V_ADVMODE_IC_INFO 0x00 +#define CN3927V_ADVMODE_IC_VER 0x01 +#define CN3927V_ADVMODE_CONTROL 0x02 +#define CN3927V_ADVMODE_VCM_MSB 0x03 +#define CN3927V_ADVMODE_VCM_LSB 0x04 +#define CN3927V_ADVMODE_STATUS 0x05 +#define CN3927V_ADVMODE_SAC_CFG 0x06 +#define CN3927V_ADVMODE_PRESC 0x07 +#define CN3927V_ADVMODE_SAC_TIME 0x08 +#define CN3927V_ADVMODE_PRESET 0x09 +#define CN3927V_ADVMODE_NRC 0x0A +#define CN3927V_ADVMODE_RING_EN 1 + +#define CN3927V_DEFAULT_ADVMODE 0x00 +#define CN3927V_DEFAULT_SAC_MODE 0x04 +#define CN3927V_DEFAULT_SAC_TIME 0x0A +#define CN3927V_DEFAULT_SAC_PRESCL 0x02 +#define CN3927V_DEFAULT_NRC_EN 0x00 +#define CN3927V_DEFAULT_NRC_MODE 0x00 +#define CN3927V_DEFAULT_NRC_PRESET 0x00 +#define CN3927V_DEFAULT_NRC_INFL 0x00 +#define CN3927V_DEFAULT_NRC_TIME 0x00 + +/* cn3927v device structure */ +struct cn3927v_device { + struct v4l2_ctrl_handler ctrls_vcm; + struct v4l2_subdev sd; + struct v4l2_device vdev; + u16 current_val; + + unsigned short current_related_pos; + unsigned short current_lens_pos; + unsigned int max_current; + unsigned int start_current; + unsigned int rated_current; + unsigned int step_mode; + unsigned int vcm_movefull_t; + unsigned int edlc_enable; + unsigned int dlc_enable; + unsigned int t_src; + unsigned int mclk; + + /* advanced mode*/ + unsigned char adcanced_mode; + unsigned char sac_mode; + unsigned char sac_time; + unsigned char sac_prescl; + unsigned char nrc_en; + unsigned char nrc_mode; + unsigned char nrc_preset; + unsigned char nrc_infl; + unsigned char nrc_time; + + struct __kernel_old_timeval start_move_tv; + struct __kernel_old_timeval end_move_tv; + unsigned long move_ms; + + u32 module_index; + const char *module_facing; + struct rk_cam_vcm_cfg vcm_cfg; + + struct gpio_desc *xsd_gpio; + struct regulator *supply; + struct i2c_client *client; + bool power_on; +}; + +struct TimeTabel_s { + unsigned int t_src;/* time of slew rate control */ + unsigned int step00;/* S[1:0] /MCLK[1:0] step period */ + unsigned int step01; + unsigned int step10; + unsigned int step11; +}; + +static const struct TimeTabel_s cn3927v_lsc_time_table[] = {/* 1/10us */ + {0b10000, 1360, 2720, 5440, 10880}, + {0b10001, 1300, 2600, 5200, 10400}, + {0b10010, 1250, 2500, 5000, 10000}, + {0b10011, 1200, 2400, 4800, 9600}, + {0b10100, 1160, 2320, 4640, 9280}, + {0b10101, 1120, 2240, 4480, 8960}, + {0b10110, 1080, 2160, 4320, 8640}, + {0b10111, 1040, 2080, 4160, 8320}, + {0b11000, 1010, 2020, 4040, 8080}, + {0b11001, 980, 1960, 3920, 7840}, + {0b11010, 950, 1900, 3800, 7600}, + {0b11011, 920, 1840, 3680, 7360}, + {0b11100, 890, 1780, 3560, 7120}, + {0b11101, 870, 1740, 3480, 6960}, + {0b11110, 850, 1700, 3400, 6800}, + {0b11111, 830, 1660, 3320, 6640}, + {0b00000, 810, 1620, 3240, 6480}, + {0b00001, 790, 1580, 3160, 6320}, + {0b00010, 775, 1550, 3100, 6200}, + {0b00011, 760, 1520, 3040, 6080}, + {0b00100, 745, 1490, 2980, 5960}, + {0b00101, 730, 1460, 2920, 5840}, + {0b00110, 715, 1430, 2860, 5720}, + {0b00111, 700, 1400, 2800, 5600}, + {0b01000, 690, 1380, 2760, 5520}, + {0b01001, 680, 1360, 2720, 5440}, + {0b01010, 670, 1340, 2680, 5360}, + {0b01011, 660, 1320, 2640, 5280}, + {0b01100, 655, 1310, 2620, 5240}, + {0b01101, 650, 1300, 2600, 5200}, + {0b01110, 645, 1290, 2580, 5160}, + {0b01111, 640, 1280, 2560, 5120}, + {REG_NULL, 0, 0, 0, 0}, +}; + +static const struct TimeTabel_s cn3927v_dlc_time_table[] = {/* us */ + {0b10000, 21250, 10630, 5310, 2660}, + {0b10001, 20310, 10160, 5080, 2540}, + {0b10010, 19530, 9770, 4880, 2440}, + {0b10011, 18750, 9380, 4690, 2340}, + {0b10100, 18130, 9060, 4530, 2270}, + {0b10101, 17500, 8750, 4380, 2190}, + {0b10110, 16880, 8440, 4220, 2110}, + {0b10111, 16250, 8130, 4060, 2030}, + {0b11000, 15780, 7890, 3950, 1970}, + {0b11001, 15310, 7660, 3830, 1910}, + {0b11010, 14840, 7420, 3710, 1860}, + {0b11011, 14380, 7190, 3590, 1800}, + {0b11100, 13910, 6950, 3480, 1740}, + {0b11101, 13590, 6800, 3400, 1700}, + {0b11110, 13280, 6640, 3320, 1660}, + {0b11111, 12970, 6480, 3240, 1620}, + {0b00000, 12660, 6330, 3160, 1580}, + {0b00001, 12340, 6170, 3090, 1540}, + {0b00010, 12110, 6050, 3030, 1510}, + {0b00011, 11880, 5940, 2970, 1480}, + {0b00100, 11640, 5820, 2910, 1460}, + {0b00101, 11410, 5700, 2850, 1430}, + {0b00110, 11170, 5590, 2790, 1400}, + {0b00111, 10940, 5470, 2730, 1370}, + {0b01000, 10780, 5390, 2700, 1350}, + {0b01001, 10630, 5310, 2660, 1330}, + {0b01010, 10470, 5230, 2620, 1310}, + {0b01011, 10310, 5160, 2580, 1290}, + {0b01100, 10230, 5120, 2560, 1280}, + {0b01101, 10160, 5080, 2540, 1270}, + {0b01110, 10080, 5040, 2520, 1260}, + {0b01111, 10000, 5000, 2500, 1250}, + {REG_NULL, 0, 0, 0, 0}, +}; + +static inline struct cn3927v_device *to_cn3927v_vcm(struct v4l2_ctrl *ctrl) +{ + return container_of(ctrl->handler, struct cn3927v_device, ctrls_vcm); +} + +static inline struct cn3927v_device *sd_to_cn3927v_vcm(struct v4l2_subdev *subdev) +{ + return container_of(subdev, struct cn3927v_device, sd); +} + +static int cn3927v_read_msg(struct i2c_client *client, + unsigned char *msb, unsigned char *lsb) +{ + int ret = 0; + struct i2c_msg msg[1]; + unsigned char data[2]; + int retries; + + if (!client->adapter) { + dev_err(&client->dev, "client->adapter NULL\n"); + return -ENODEV; + } + + for (retries = 0; retries < 5; retries++) { + msg->addr = client->addr; + msg->flags = I2C_M_RD; + msg->len = 2; + msg->buf = data; + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret == 1) { + dev_dbg(&client->dev, + "%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n", + __func__, msg->addr, data[0], data[1]); + + *msb = data[0]; + *lsb = data[1]; + return 0; + } + + dev_info(&client->dev, + "retrying I2C... %d\n", retries); + retries++; + msleep(20); + } + dev_err(&client->dev, + "%s: i2c read to failed with error %d\n", __func__, ret); + return ret; +} + +static int cn3927v_write_msg(struct i2c_client *client, + u8 msb, u8 lsb) +{ + int ret = 0; + struct i2c_msg msg[1]; + unsigned char data[2]; + int retries; + + if (!client->adapter) { + dev_err(&client->dev, "client->adapter NULL\n"); + return -ENODEV; + } + + for (retries = 0; retries < 5; retries++) { + msg->addr = client->addr; + msg->flags = 0; + msg->len = 2; + msg->buf = data; + + data[0] = msb; + data[1] = lsb; + + ret = i2c_transfer(client->adapter, msg, 1); + usleep_range(50, 100); + + if (ret == 1) { + dev_dbg(&client->dev, + "%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n", + __func__, msg->addr, data[0], data[1]); + return 0; + } + + dev_info(&client->dev, + "retrying I2C... %d\n", retries); + msleep(20); + } + dev_err(&client->dev, + "i2c write to failed with error %d\n", ret); + return ret; +} + +/* Write registers up to 4 at a time */ +static int cn3927v_write_reg(struct i2c_client *client, u8 reg, u32 len, u32 val) +{ + u32 buf_i, val_i, retries; + u8 buf[5]; + u8 *val_p; + __be32 val_be; + + if (len > 4) + return -EINVAL; + + buf[0] = reg; + + val_be = cpu_to_be32(val); + val_p = (u8 *)&val_be; + buf_i = 1; + val_i = 4 - len; + + while (val_i < 4) + buf[buf_i++] = val_p[val_i++]; + + for (retries = 0; retries < 5; retries++) { + if (i2c_master_send(client, buf, len + 1) == len + 1) { + dev_dbg(&client->dev, + "%s: vcm i2c ok, reg 0x%x, val 0x%x, len 0x%x\n", + __func__, reg, val, len); + return 0; + } + + dev_info(&client->dev, + "retrying I2C... %d\n", retries); + msleep(20); + } + + dev_err(&client->dev, "Failed to write 0x%04x,0x%x\n", reg, val); + return -EIO; +} + +/* Read registers up to 4 at a time */ +static int cn3927v_read_reg(struct i2c_client *client, u8 reg, u32 len, u32 *val) +{ + struct i2c_msg msgs[2]; + __be32 data_be = 0; + u8 *data_be_p; + u32 retries; + int ret; + + if (len > 4 || !len) + return -EINVAL; + + data_be_p = (u8 *)&data_be; + /* Write register address */ + msgs[0].addr = client->addr; + msgs[0].flags = 0; + msgs[0].len = 1; + msgs[0].buf = (u8 *)® + + /* Read data from register */ + msgs[1].addr = client->addr; + msgs[1].flags = I2C_M_RD; + msgs[1].len = len; + msgs[1].buf = &data_be_p[4 - len]; + + for (retries = 0; retries < 5; retries++) { + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + if (ret == ARRAY_SIZE(msgs)) { + *val = be32_to_cpu(data_be); + dev_dbg(&client->dev, + "%s: vcm i2c ok, reg 0x%x, val 0x%x\n", + __func__, reg, *val); + return 0; + } + } + + dev_err(&client->dev, + "%s: i2c read to failed with error %d\n", __func__, ret); + return -EIO; +} + +static unsigned int cn3927v_move_time(struct cn3927v_device *dev_vcm, + unsigned int move_pos) +{ + struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd); + unsigned int move_time_ms = 200; + unsigned int step_period_lsc = 0; + unsigned int step_period_dlc = 0; + unsigned int codes_per_step = 1; + unsigned int step_case; + unsigned int sac_prescl; + int table_cnt = 0; + int i = 0; + + if (dev_vcm->adcanced_mode) { + // sac setting time = tvib = (3.81ms+(SACT[6:0]*0.03ms)) * PRESC[1:0])) + sac_prescl = 1 << dev_vcm->sac_prescl; + move_time_ms = (((381 + 3 * dev_vcm->sac_time)) * sac_prescl + 50) / 100; + return move_time_ms; + } else if (dev_vcm->dlc_enable) { + step_case = dev_vcm->mclk & 0x3; + table_cnt = sizeof(cn3927v_dlc_time_table) / + sizeof(struct TimeTabel_s); + for (i = 0; i < table_cnt; i++) { + if (cn3927v_dlc_time_table[i].t_src == dev_vcm->t_src) + break; + } + } else { + step_case = dev_vcm->step_mode & 0x3; + table_cnt = sizeof(cn3927v_lsc_time_table) / + sizeof(struct TimeTabel_s); + for (i = 0; i < table_cnt; i++) { + if (cn3927v_lsc_time_table[i].t_src == dev_vcm->t_src) + break; + } + } + + if (i >= table_cnt) + i = 0; + + switch (step_case) { + case 0: + step_period_lsc = cn3927v_lsc_time_table[i].step00; + step_period_dlc = cn3927v_dlc_time_table[i].step00; + break; + case 1: + step_period_lsc = cn3927v_lsc_time_table[i].step01; + step_period_dlc = cn3927v_dlc_time_table[i].step01; + break; + case 2: + step_period_lsc = cn3927v_lsc_time_table[i].step10; + step_period_dlc = cn3927v_dlc_time_table[i].step10; + break; + case 3: + step_period_lsc = cn3927v_lsc_time_table[i].step11; + step_period_dlc = cn3927v_dlc_time_table[i].step11; + break; + default: + dev_err(&client->dev, + "%s: step_case is error %d\n", + __func__, step_case); + break; + } + codes_per_step = (dev_vcm->step_mode & 0x0c) >> 2; + if (codes_per_step > 1) + codes_per_step = 1 << (codes_per_step - 1); + + if (!dev_vcm->dlc_enable) { + if (!codes_per_step) + move_time_ms = (step_period_lsc * move_pos + 9999) / 10000; + else + move_time_ms = (step_period_lsc * move_pos / codes_per_step + 9999) / 10000; + } else { + move_time_ms = (step_period_dlc + 999) / 1000; + } + + return move_time_ms; +} + +static int cn3927v_get_dac(struct cn3927v_device *dev_vcm, unsigned int *cur_dac) +{ + struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd); + int ret; + unsigned char lsb = 0; + unsigned char msb = 0; + unsigned int abs_step; + + if (dev_vcm->adcanced_mode) { + ret = cn3927v_read_reg(client, CN3927V_ADVMODE_VCM_MSB, 2, &abs_step); + if (ret != 0) + goto err; + } else { + ret = cn3927v_read_msg(client, &msb, &lsb); + if (ret != 0) + goto err; + + abs_step = (((unsigned int)(msb & 0x3FU)) << 4U) | + (((unsigned int)lsb) >> 4U); + } + + *cur_dac = abs_step; + dev_dbg(&client->dev, "%s: get dac %d\n", __func__, *cur_dac); + return 0; + +err: + dev_err(&client->dev, + "%s: failed with error %d\n", __func__, ret); + return ret; +} + +static int cn3927v_set_dac(struct cn3927v_device *dev_vcm, + unsigned int dest_dac) +{ + struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd); + int ret; + + if (dev_vcm->adcanced_mode) { + unsigned int i; + bool vcm_idle = false; + + /* wait for I2C bus idle */ + vcm_idle = false; + for (i = 0; i < 10; i++) { + unsigned int status = 0; + + cn3927v_read_reg(client, CN3927V_ADVMODE_STATUS, 1, &status); + status &= 0x01; + if (status == 0) { + vcm_idle = true; + break; + } + usleep_range(1000, 1200); + } + + if (!vcm_idle) { + dev_err(&client->dev, + "%s: watting 0x05 flag timeout!\n", __func__); + return -ETIMEDOUT; + } + + /* vcm move */ + ret = cn3927v_write_reg(client, CN3927V_ADVMODE_VCM_MSB, + 2, dest_dac); + if (ret != 0) + goto err; + } else { + unsigned char msb, lsb; + + msb = (0x00U | ((dest_dac & 0x3F0U) >> 4U)); + lsb = (((dest_dac & 0x0FU) << 4U) | dev_vcm->step_mode); + ret = cn3927v_write_msg(client, msb, lsb); + if (ret != 0) + goto err; + } + + return ret; +err: + dev_err(&client->dev, + "%s: failed with error %d\n", __func__, ret); + return ret; +} + +static int cn3927v_get_pos(struct cn3927v_device *dev_vcm, + unsigned int *cur_pos) +{ + struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd); + unsigned int dac, position, range; + int ret; + + range = dev_vcm->rated_current - dev_vcm->start_current; + ret = cn3927v_get_dac(dev_vcm, &dac); + if (!ret) { + if (dac <= dev_vcm->start_current) { + position = VCMDRV_MAX_LOG; + } else if ((dac > dev_vcm->start_current) && + (dac <= dev_vcm->rated_current)) { + position = (dac - dev_vcm->start_current) * VCMDRV_MAX_LOG / range; + position = VCMDRV_MAX_LOG - position; + } else { + position = 0; + } + + *cur_pos = position; + + dev_dbg(&client->dev, "%s: get position %d, dac %d\n", __func__, *cur_pos, dac); + return 0; + } + + dev_err(&client->dev, + "%s: failed with error %d\n", __func__, ret); + return ret; +} + +static int cn3927v_set_pos(struct cn3927v_device *dev_vcm, + unsigned int dest_pos) +{ + struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd); + unsigned int position; + unsigned int range; + int ret; + + range = dev_vcm->rated_current - dev_vcm->start_current; + if (dest_pos >= VCMDRV_MAX_LOG) + position = dev_vcm->start_current; + else + position = dev_vcm->start_current + + (range * (VCMDRV_MAX_LOG - dest_pos) / VCMDRV_MAX_LOG); + + if (position > CN3927V_MAX_REG) + position = CN3927V_MAX_REG; + + dev_vcm->current_lens_pos = position; + dev_vcm->current_related_pos = dest_pos; + + ret = cn3927v_set_dac(dev_vcm, position); + dev_dbg(&client->dev, "%s: set position %d, dac %d\n", __func__, dest_pos, position); + + return ret; +} + +static int cn3927v_get_ctrl(struct v4l2_ctrl *ctrl) +{ + struct cn3927v_device *dev_vcm = to_cn3927v_vcm(ctrl); + + if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE) + return cn3927v_get_pos(dev_vcm, &ctrl->val); + + return -EINVAL; +} + +static int cn3927v_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct cn3927v_device *dev_vcm = to_cn3927v_vcm(ctrl); + struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd); + unsigned int dest_pos = ctrl->val; + int move_pos; + long mv_us; + int ret = 0; + + if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE) { + if (dest_pos > VCMDRV_MAX_LOG) { + dev_err(&client->dev, + "%s dest_pos is error. %d > %d\n", + __func__, dest_pos, VCMDRV_MAX_LOG); + return -EINVAL; + } + /* calculate move time */ + move_pos = dev_vcm->current_related_pos - dest_pos; + if (move_pos < 0) + move_pos = -move_pos; + + ret = cn3927v_set_pos(dev_vcm, dest_pos); + if (dev_vcm->dlc_enable || dev_vcm->adcanced_mode) + dev_vcm->move_ms = dev_vcm->vcm_movefull_t; + else + dev_vcm->move_ms = + ((dev_vcm->vcm_movefull_t * (uint32_t)move_pos) / VCMDRV_MAX_LOG); + + dev_dbg(&client->dev, + "dest_pos %d, dac %d, move_ms %ld\n", + dest_pos, dev_vcm->current_lens_pos, dev_vcm->move_ms); + + dev_vcm->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns()); + mv_us = dev_vcm->start_move_tv.tv_usec + + dev_vcm->move_ms * 1000; + if (mv_us >= 1000000) { + dev_vcm->end_move_tv.tv_sec = + dev_vcm->start_move_tv.tv_sec + 1; + dev_vcm->end_move_tv.tv_usec = mv_us - 1000000; + } else { + dev_vcm->end_move_tv.tv_sec = + dev_vcm->start_move_tv.tv_sec; + dev_vcm->end_move_tv.tv_usec = mv_us; + } + } + + return ret; +} + +static const struct v4l2_ctrl_ops cn3927v_vcm_ctrl_ops = { + .g_volatile_ctrl = cn3927v_get_ctrl, + .s_ctrl = cn3927v_set_ctrl, +}; + +static int cn3927v_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + int rval; + + rval = pm_runtime_get_sync(sd->dev); + if (rval < 0) { + pm_runtime_put_noidle(sd->dev); + return rval; + } + + return 0; +} + +static int cn3927v_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + pm_runtime_put(sd->dev); + + return 0; +} + +static const struct v4l2_subdev_internal_ops cn3927v_int_ops = { + .open = cn3927v_open, + .close = cn3927v_close, +}; + +static void cn3927v_update_vcm_cfg(struct cn3927v_device *dev_vcm) +{ + struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd); + + if (dev_vcm->max_current == 0) { + dev_err(&client->dev, "max current is zero"); + return; + } + + dev_vcm->start_current = dev_vcm->vcm_cfg.start_ma * + CN3927V_MAX_REG / dev_vcm->max_current; + dev_vcm->rated_current = dev_vcm->vcm_cfg.rated_ma * + CN3927V_MAX_REG / dev_vcm->max_current; + dev_vcm->step_mode = dev_vcm->vcm_cfg.step_mode; + + dev_dbg(&client->dev, + "vcm_cfg: %d, %d, %d, max_current %d\n", + dev_vcm->vcm_cfg.start_ma, + dev_vcm->vcm_cfg.rated_ma, + dev_vcm->vcm_cfg.step_mode, + dev_vcm->max_current); +} + +static long cn3927v_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) +{ + struct cn3927v_device *dev_vcm = sd_to_cn3927v_vcm(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct rk_cam_vcm_tim *vcm_tim; + struct rk_cam_vcm_cfg *vcm_cfg; + int ret = 0; + + if (cmd == RK_VIDIOC_VCM_TIMEINFO) { + vcm_tim = (struct rk_cam_vcm_tim *)arg; + + vcm_tim->vcm_start_t.tv_sec = dev_vcm->start_move_tv.tv_sec; + vcm_tim->vcm_start_t.tv_usec = + dev_vcm->start_move_tv.tv_usec; + vcm_tim->vcm_end_t.tv_sec = dev_vcm->end_move_tv.tv_sec; + vcm_tim->vcm_end_t.tv_usec = dev_vcm->end_move_tv.tv_usec; + + dev_dbg(&client->dev, "cn3927v_get_move_res 0x%lx, 0x%lx, 0x%lx, 0x%lx\n", + vcm_tim->vcm_start_t.tv_sec, + vcm_tim->vcm_start_t.tv_usec, + vcm_tim->vcm_end_t.tv_sec, + vcm_tim->vcm_end_t.tv_usec); + } else if (cmd == RK_VIDIOC_GET_VCM_CFG) { + vcm_cfg = (struct rk_cam_vcm_cfg *)arg; + + vcm_cfg->start_ma = dev_vcm->vcm_cfg.start_ma; + vcm_cfg->rated_ma = dev_vcm->vcm_cfg.rated_ma; + vcm_cfg->step_mode = dev_vcm->vcm_cfg.step_mode; + } else if (cmd == RK_VIDIOC_SET_VCM_CFG) { + vcm_cfg = (struct rk_cam_vcm_cfg *)arg; + + dev_vcm->vcm_cfg.start_ma = vcm_cfg->start_ma; + dev_vcm->vcm_cfg.rated_ma = vcm_cfg->rated_ma; + dev_vcm->vcm_cfg.step_mode = vcm_cfg->step_mode; + cn3927v_update_vcm_cfg(dev_vcm); + } else { + dev_err(&client->dev, + "cmd 0x%x not supported\n", cmd); + return -EINVAL; + } + + return ret; +} + +#ifdef CONFIG_COMPAT +static long cn3927v_compat_ioctl32(struct v4l2_subdev *sd, + unsigned int cmd, unsigned long arg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + void __user *up = compat_ptr(arg); + struct rk_cam_compat_vcm_tim compat_vcm_tim; + struct rk_cam_vcm_tim vcm_tim; + struct rk_cam_vcm_cfg vcm_cfg; + long ret; + + if (cmd == RK_VIDIOC_COMPAT_VCM_TIMEINFO) { + struct rk_cam_compat_vcm_tim __user *p32 = up; + + ret = cn3927v_ioctl(sd, RK_VIDIOC_VCM_TIMEINFO, &vcm_tim); + compat_vcm_tim.vcm_start_t.tv_sec = vcm_tim.vcm_start_t.tv_sec; + compat_vcm_tim.vcm_start_t.tv_usec = vcm_tim.vcm_start_t.tv_usec; + compat_vcm_tim.vcm_end_t.tv_sec = vcm_tim.vcm_end_t.tv_sec; + compat_vcm_tim.vcm_end_t.tv_usec = vcm_tim.vcm_end_t.tv_usec; + + put_user(compat_vcm_tim.vcm_start_t.tv_sec, + &p32->vcm_start_t.tv_sec); + put_user(compat_vcm_tim.vcm_start_t.tv_usec, + &p32->vcm_start_t.tv_usec); + put_user(compat_vcm_tim.vcm_end_t.tv_sec, + &p32->vcm_end_t.tv_sec); + put_user(compat_vcm_tim.vcm_end_t.tv_usec, + &p32->vcm_end_t.tv_usec); + } else if (cmd == RK_VIDIOC_GET_VCM_CFG) { + ret = cn3927v_ioctl(sd, RK_VIDIOC_GET_VCM_CFG, &vcm_cfg); + if (!ret) { + ret = copy_to_user(up, &vcm_cfg, sizeof(vcm_cfg)); + if (ret) + ret = -EFAULT; + } + } else if (cmd == RK_VIDIOC_SET_VCM_CFG) { + ret = copy_from_user(&vcm_cfg, up, sizeof(vcm_cfg)); + if (!ret) + ret = cn3927v_ioctl(sd, cmd, &vcm_cfg); + else + ret = -EFAULT; + } else { + dev_err(&client->dev, + "cmd 0x%x not supported\n", cmd); + return -EINVAL; + } + + return ret; +} +#endif + +static const struct v4l2_subdev_core_ops cn3927v_core_ops = { + .ioctl = cn3927v_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl32 = cn3927v_compat_ioctl32 +#endif +}; + +static const struct v4l2_subdev_ops cn3927v_ops = { + .core = &cn3927v_core_ops, +}; + +static void cn3927v_subdev_cleanup(struct cn3927v_device *cn3927v_dev) +{ + v4l2_device_unregister_subdev(&cn3927v_dev->sd); + v4l2_device_unregister(&cn3927v_dev->vdev); + v4l2_ctrl_handler_free(&cn3927v_dev->ctrls_vcm); + media_entity_cleanup(&cn3927v_dev->sd.entity); +} + +static int cn3927v_init_controls(struct cn3927v_device *dev_vcm) +{ + struct v4l2_ctrl_handler *hdl = &dev_vcm->ctrls_vcm; + const struct v4l2_ctrl_ops *ops = &cn3927v_vcm_ctrl_ops; + + v4l2_ctrl_handler_init(hdl, 1); + + v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_ABSOLUTE, + 0, VCMDRV_MAX_LOG, 1, VCMDRV_MAX_LOG); + + if (hdl->error) + dev_err(dev_vcm->sd.dev, "%s fail error: 0x%x\n", + __func__, hdl->error); + dev_vcm->sd.ctrl_handler = hdl; + return hdl->error; +} + +#define USED_SYS_DEBUG +#ifdef USED_SYS_DEBUG +static ssize_t set_dacval(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct cn3927v_device *dev_vcm = sd_to_cn3927v_vcm(sd); + int val = 0; + int ret = 0; + + ret = kstrtoint(buf, 0, &val); + if (!ret) + cn3927v_set_dac(dev_vcm, val); + + return count; +} + +static ssize_t get_dacval(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct cn3927v_device *dev_vcm = sd_to_cn3927v_vcm(sd); + unsigned int dac = 0; + + cn3927v_get_dac(dev_vcm, &dac); + return sprintf(buf, "%u\n", dac); +} + +static struct device_attribute attributes[] = { + __ATTR(dacval, 0600, get_dacval, set_dacval), +}; + +static int add_sysfs_interfaces(struct device *dev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(attributes); i++) + if (device_create_file(dev, attributes + i)) + goto undo; + return 0; +undo: + for (i--; i >= 0 ; i--) + device_remove_file(dev, attributes + i); + dev_err(dev, "%s: failed to create sysfs interface\n", __func__); + return -ENODEV; +} + +static int remove_sysfs_interfaces(struct device *dev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(attributes); i++) + device_remove_file(dev, attributes + i); + return 0; +} +#else +static inline int add_sysfs_interfaces(struct device *dev) +{ + return 0; +} + +static inline int remove_sysfs_interfaces(struct device *dev) +{ + return 0; +} +#endif + +static int __cn3927v_set_power(struct cn3927v_device *cn3927v, bool on) +{ + struct i2c_client *client = cn3927v->client; + int ret = 0; + + if (cn3927v->power_on == !!on) + goto unlock_and_return; + + if (on) { + ret = regulator_enable(cn3927v->supply); + if (ret < 0) { + dev_err(&client->dev, "Failed to enable regulator\n"); + goto unlock_and_return; + } + cn3927v->power_on = true; + } else { + ret = regulator_disable(cn3927v->supply); + if (ret < 0) { + dev_err(&client->dev, "Failed to disable regulator\n"); + goto unlock_and_return; + } + cn3927v->power_on = false; + } + +unlock_and_return: + return ret; +} + +static int cn3927v_configure_regulator(struct cn3927v_device *cn3927v) +{ + struct i2c_client *client = cn3927v->client; + int ret = 0; + + cn3927v->supply = devm_regulator_get(&client->dev, "avdd"); + if (IS_ERR(cn3927v->supply)) { + ret = PTR_ERR(cn3927v->supply); + if (ret != -EPROBE_DEFER) + dev_err(&client->dev, "could not get regulator avdd\n"); + return ret; + } + cn3927v->power_on = false; + return ret; +} + +static int cn3927v_parse_dt_property(struct i2c_client *client, + struct cn3927v_device *dev_vcm) +{ + struct device_node *np = of_node_get(client->dev.of_node); + int ret; + + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_MAX_CURRENT, + (unsigned int *)&dev_vcm->max_current)) { + dev_vcm->max_current = CN3927V_MAX_CURRENT; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_MAX_CURRENT); + } + if (dev_vcm->max_current == 0) + dev_vcm->max_current = CN3927V_MAX_CURRENT; + + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_START_CURRENT, + (unsigned int *)&dev_vcm->vcm_cfg.start_ma)) { + dev_vcm->vcm_cfg.start_ma = CN3927V_DEFAULT_START_CURRENT; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_START_CURRENT); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_RATED_CURRENT, + (unsigned int *)&dev_vcm->vcm_cfg.rated_ma)) { + dev_vcm->vcm_cfg.rated_ma = CN3927V_DEFAULT_RATED_CURRENT; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_RATED_CURRENT); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_STEP_MODE, + (unsigned int *)&dev_vcm->vcm_cfg.step_mode)) { + dev_vcm->vcm_cfg.step_mode = CN3927V_DEFAULT_STEP_MODE; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_STEP_MODE); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_EDLC_ENABLE, + (unsigned int *)&dev_vcm->edlc_enable)) { + dev_vcm->edlc_enable = CN3927V_DEFAULT_EDLC_EN; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_EDLC_ENABLE); + } + + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_DLC_ENABLE, + (unsigned int *)&dev_vcm->dlc_enable)) { + dev_vcm->dlc_enable = CN3927V_DEFAULT_DLC_EN; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_DLC_ENABLE); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_MCLK, + (unsigned int *)&dev_vcm->mclk)) { + dev_vcm->mclk = CN3927V_DEFAULT_MCLK; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_MCLK); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_T_SRC, + (unsigned int *)&dev_vcm->t_src)) { + dev_vcm->t_src = CN3927V_DEFAULT_T_SRC; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_T_SRC); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_ADVANCED_MODE, + (unsigned int *)&dev_vcm->adcanced_mode)) { + dev_vcm->adcanced_mode = CN3927V_DEFAULT_ADVMODE; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_ADVANCED_MODE); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_SAC_MODE, + (unsigned int *)&dev_vcm->sac_mode)) { + dev_vcm->sac_mode = CN3927V_DEFAULT_SAC_MODE; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_SAC_MODE); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_SAC_TIME, + (unsigned int *)&dev_vcm->sac_time)) { + dev_vcm->sac_time = CN3927V_DEFAULT_SAC_TIME; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_SAC_TIME); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_PRESC, + (unsigned int *)&dev_vcm->sac_prescl)) { + dev_vcm->sac_prescl = CN3927V_DEFAULT_SAC_PRESCL; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_PRESC); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_NRC_EN, + (unsigned int *)&dev_vcm->nrc_en)) { + dev_vcm->nrc_en = CN3927V_DEFAULT_NRC_EN; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_NRC_EN); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_NRC_MODE, + (unsigned int *)&dev_vcm->nrc_mode)) { + dev_vcm->nrc_mode = CN3927V_DEFAULT_NRC_MODE; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_NRC_MODE); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_NRC_PRESET, + (unsigned int *)&dev_vcm->nrc_preset)) { + dev_vcm->nrc_preset = CN3927V_DEFAULT_NRC_PRESET; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_NRC_PRESET); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_NRC_INFL, + (unsigned int *)&dev_vcm->nrc_infl)) { + dev_vcm->nrc_infl = CN3927V_DEFAULT_NRC_INFL; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_NRC_INFL); + } + if (of_property_read_u32(np, + OF_CAMERA_VCMDRV_NRC_TIME, + (unsigned int *)&dev_vcm->nrc_time)) { + dev_vcm->nrc_time = CN3927V_DEFAULT_NRC_TIME; + dev_info(&client->dev, + "could not get module %s from dts!\n", + OF_CAMERA_VCMDRV_NRC_TIME); + } + + dev_vcm->xsd_gpio = devm_gpiod_get(&client->dev, "xsd", GPIOD_OUT_HIGH); + if (IS_ERR(dev_vcm->xsd_gpio)) + dev_warn(&client->dev, "Failed to get xsd-gpios\n"); + + ret = of_property_read_u32(np, RKMODULE_CAMERA_MODULE_INDEX, + &dev_vcm->module_index); + ret |= of_property_read_string(np, RKMODULE_CAMERA_MODULE_FACING, + &dev_vcm->module_facing); + if (ret) { + dev_err(&client->dev, + "could not get module information!\n"); + return -EINVAL; + } + + dev_vcm->client = client; + ret = cn3927v_configure_regulator(dev_vcm); + if (ret) { + dev_err(&client->dev, "Failed to get power regulator!\n"); + return ret; + } + + dev_dbg(&client->dev, "current: %d, %d, %d, dlc_en: %d, t_src: %d, mclk: %d", + dev_vcm->max_current, + dev_vcm->start_current, + dev_vcm->rated_current, + dev_vcm->dlc_enable, + dev_vcm->t_src, + dev_vcm->mclk); + + /* advanced mode*/ + dev_info(&client->dev, "adcanced: %d, sac: %d, %d, %d, nrc: %d, %d, %d, %d, %d", + dev_vcm->adcanced_mode, + dev_vcm->sac_mode, + dev_vcm->sac_time, + dev_vcm->sac_prescl, + dev_vcm->nrc_en, + dev_vcm->nrc_mode, + dev_vcm->nrc_preset, + dev_vcm->nrc_infl, + dev_vcm->nrc_time); + + return 0; +} + +static int cn3927v_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct cn3927v_device *cn3927v_dev; + struct v4l2_subdev *sd; + char facing[2]; + int ret; + + dev_info(&client->dev, "probing...\n"); + cn3927v_dev = devm_kzalloc(&client->dev, sizeof(*cn3927v_dev), + GFP_KERNEL); + if (cn3927v_dev == NULL) + return -ENOMEM; + + ret = cn3927v_parse_dt_property(client, cn3927v_dev); + if (ret) + return ret; + v4l2_i2c_subdev_init(&cn3927v_dev->sd, client, &cn3927v_ops); + cn3927v_dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + cn3927v_dev->sd.internal_ops = &cn3927v_int_ops; + + ret = cn3927v_init_controls(cn3927v_dev); + if (ret) + goto err_cleanup; + + ret = media_entity_pads_init(&cn3927v_dev->sd.entity, 0, NULL); + if (ret < 0) + goto err_cleanup; + + sd = &cn3927v_dev->sd; + sd->entity.function = MEDIA_ENT_F_LENS; + + memset(facing, 0, sizeof(facing)); + if (strcmp(cn3927v_dev->module_facing, "back") == 0) + facing[0] = 'b'; + else + facing[0] = 'f'; + + snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s", + cn3927v_dev->module_index, facing, + CN3927V_NAME, dev_name(sd->dev)); + ret = v4l2_async_register_subdev(sd); + if (ret) + dev_err(&client->dev, "v4l2 async register subdev failed\n"); + + cn3927v_update_vcm_cfg(cn3927v_dev); + cn3927v_dev->move_ms = 0; + cn3927v_dev->current_related_pos = VCMDRV_MAX_LOG; + cn3927v_dev->current_lens_pos = cn3927v_dev->start_current; + cn3927v_dev->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns()); + cn3927v_dev->end_move_tv = ns_to_kernel_old_timeval(ktime_get_ns()); + cn3927v_dev->vcm_movefull_t = + cn3927v_move_time(cn3927v_dev, CN3927V_MAX_REG); + pm_runtime_enable(&client->dev); + + add_sysfs_interfaces(&client->dev); + dev_info(&client->dev, "probing successful\n"); + + return 0; + +err_cleanup: + cn3927v_subdev_cleanup(cn3927v_dev); + dev_err(&client->dev, "Probe failed: %d\n", ret); + return ret; +} + +static int cn3927v_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct cn3927v_device *cn3927v_dev = sd_to_cn3927v_vcm(sd); + + remove_sysfs_interfaces(&client->dev); + pm_runtime_disable(&client->dev); + cn3927v_subdev_cleanup(cn3927v_dev); + + return 0; +} + +static int cn3927v_init(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct cn3927v_device *cn3927v_dev = sd_to_cn3927v_vcm(sd); + unsigned char data = 0x0; + int ret = 0; + + if (cn3927v_dev->adcanced_mode) { + // need to wait 1ms after poweron + usleep_range(1000, 1200); + // Advanced Mode + ret = cn3927v_write_msg(client, 0xED, 0xAB); + if (ret) + goto err; + // Power down + ret = cn3927v_write_msg(client, CN3927V_ADVMODE_CONTROL, 0x01); + if (ret) + goto err; + // active + ret = cn3927v_write_msg(client, CN3927V_ADVMODE_CONTROL, 0x00); + if (ret) + goto err; + // delay 1ms + usleep_range(1000, 1200); + // SAC mode & nrc_time & nrc_infl + data = CN3927V_ADVMODE_RING_EN << 7 | + (cn3927v_dev->nrc_infl & 0x3) << 5 | + (cn3927v_dev->nrc_time & 0x1) << 4 | + (cn3927v_dev->sac_mode & 0xF); + ret = cn3927v_write_msg(client, CN3927V_ADVMODE_SAC_CFG, data); + if (ret) + goto err; + // Set Tvib (PRESC[1:0] ) + ret = cn3927v_write_msg(client, CN3927V_ADVMODE_PRESC, cn3927v_dev->sac_prescl); + if (ret) + goto err; + // Set Tvib (SACT[6:0] ) + ret = cn3927v_write_msg(client, CN3927V_ADVMODE_SAC_TIME, cn3927v_dev->sac_time); + if (ret) + goto err; + // nrc preset + ret = cn3927v_write_msg(client, CN3927V_ADVMODE_PRESET, cn3927v_dev->nrc_preset); + if (ret) + goto err; + // nrc en & nrc mode + data = (cn3927v_dev->nrc_en & 0x1) << 1 | + (cn3927v_dev->nrc_mode & 0x1); + ret = cn3927v_write_msg(client, CN3927V_ADVMODE_NRC, data); + if (ret) + goto err; + } else { + // need to wait 1ms after poweron + usleep_range(1000, 1200); + + ret = cn3927v_write_msg(client, 0xEC, 0xA3); + if (ret) + goto err; + + data = (cn3927v_dev->mclk & 0x3) | 0x04 | + ((cn3927v_dev->dlc_enable << 0x3) & 0x08); + ret = cn3927v_write_msg(client, 0xA1, data); + if (ret) + goto err; + + data = (cn3927v_dev->t_src << 0x3) & 0xf8; + ret = cn3927v_write_msg(client, 0xF2, data); + if (ret) + goto err; + + ret = cn3927v_write_msg(client, 0xDC, 0x51); + if (ret) + goto err; + + /* set normal mode */ + ret = cn3927v_write_msg(client, 0xDF, 0x5B); + if (ret != 0) + dev_err(&client->dev, + "%s: failed with error %d\n", __func__, ret); + } + + return 0; +err: + dev_err(&client->dev, "failed with error %d\n", ret); + return -1; +} + +static int __maybe_unused cn3927v_vcm_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct cn3927v_device *dev_vcm = sd_to_cn3927v_vcm(sd); + int dac = dev_vcm->current_lens_pos; + unsigned int move_time; + + dev_dbg(&client->dev, "%s: current_lens_pos %d, current_related_pos %d\n", + __func__, dev_vcm->current_lens_pos, dev_vcm->current_related_pos); + move_time = 1000 * cn3927v_move_time(dev_vcm, CN3927V_GRADUAL_MOVELENS_STEPS); + while (dac >= dev_vcm->start_current) { + cn3927v_set_dac(dev_vcm, dac); + usleep_range(move_time, move_time + 1000); + dac -= CN3927V_GRADUAL_MOVELENS_STEPS; + if (dac <= 0) + break; + } + + if (dac < dev_vcm->start_current) { + dac = dev_vcm->start_current; + cn3927v_set_dac(dev_vcm, dac); + } + /* set to power down mode */ + if (dev_vcm->adcanced_mode) { + cn3927v_write_reg(client, 0x02, 1, 0x01); + } else { + /* Ringing off */ + cn3927v_write_msg(client, 0xDC, 0x51); + } + + __cn3927v_set_power(dev_vcm, false); + return 0; +} + +static int __maybe_unused cn3927v_vcm_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct cn3927v_device *dev_vcm = sd_to_cn3927v_vcm(sd); + unsigned int move_time; + int dac = 0; + + + __cn3927v_set_power(dev_vcm, true); + cn3927v_init(client); + + dev_dbg(&client->dev, "%s: current_lens_pos %d, current_related_pos %d\n", + __func__, dev_vcm->current_lens_pos, dev_vcm->current_related_pos); + move_time = 1000 * cn3927v_move_time(dev_vcm, CN3927V_GRADUAL_MOVELENS_STEPS); + while (dac <= dev_vcm->current_lens_pos) { + cn3927v_set_dac(dev_vcm, dac); + usleep_range(move_time, move_time + 1000); + dac += CN3927V_GRADUAL_MOVELENS_STEPS; + if (dac >= dev_vcm->current_lens_pos) + break; + } + + if (dac > dev_vcm->current_lens_pos) { + dac = dev_vcm->current_lens_pos; + cn3927v_set_dac(dev_vcm, dac); + } + + return 0; +} + +static const struct i2c_device_id cn3927v_id_table[] = { + { CN3927V_NAME, 0 }, + { { 0 } } +}; +MODULE_DEVICE_TABLE(i2c, cn3927v_id_table); + +static const struct of_device_id cn3927v_of_table[] = { + { .compatible = "chipnext,cn3927v" }, + { { 0 } } +}; +MODULE_DEVICE_TABLE(of, cn3927v_of_table); + +static const struct dev_pm_ops cn3927v_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(cn3927v_vcm_suspend, cn3927v_vcm_resume) + SET_RUNTIME_PM_OPS(cn3927v_vcm_suspend, cn3927v_vcm_resume, NULL) +}; + +static struct i2c_driver cn3927v_i2c_driver = { + .driver = { + .name = CN3927V_NAME, + .pm = &cn3927v_pm_ops, + .of_match_table = cn3927v_of_table, + }, + .probe = &cn3927v_probe, + .remove = &cn3927v_remove, + .id_table = cn3927v_id_table, +}; + +module_i2c_driver(cn3927v_i2c_driver); + +MODULE_DESCRIPTION("CN3927V VCM driver"); +MODULE_LICENSE("GPL");