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android13/kernel-5.10/drivers/media/i2c/cn3927v.c

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// SPDX-License-Identifier: GPL-2.0
/*
* cn3927v vcm driver
*
* Copyright (C) 2022 Rockchip Electronics Co., Ltd.
*
* V0.0X01.0X01 reduce vcm collision noise.
* V0.0X01.0X02 check dev connection before register.
* V0.0X01.0X03
* 1. fix suspend cause i2c error issue.
* 2. use v4l2_dbg replace dev_dbg for dynamic print debug info.
*/
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/rk-camera-module.h>
#include <linux/version.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <linux/rk_vcm_head.h>
#include <linux/compat.h>
#include <linux/regulator/consumer.h>
#define OF_CAMERA_VCMDRV_EDLC_ENABLE "rockchip,vcm-edlc-enable"
#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x2)
#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
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "debug level (0-2)");
/* cn3927v device structure */
struct cn3927v_device {
struct v4l2_ctrl_handler ctrls_vcm;
struct v4l2_ctrl *focus;
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;
unsigned int max_logicalpos;
/* 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;
struct v4l2_subdev *sd = i2c_get_clientdata(client);
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) {
v4l2_dbg(1, debug, sd,
"%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;
struct v4l2_subdev *sd = i2c_get_clientdata(client);
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) {
v4l2_dbg(1, debug, sd,
"%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;
struct v4l2_subdev *sd = i2c_get_clientdata(client);
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) {
v4l2_dbg(1, debug, sd,
"%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;
struct v4l2_subdev *sd = i2c_get_clientdata(client);
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 *)&reg;
/* 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);
v4l2_dbg(1, debug, sd,
"%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;
v4l2_dbg(1, debug, &dev_vcm->sd, "%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 = dev_vcm->max_logicalpos;
} else if ((dac > dev_vcm->start_current) &&
(dac <= dev_vcm->rated_current)) {
position = (dac - dev_vcm->start_current) * dev_vcm->max_logicalpos / range;
position = dev_vcm->max_logicalpos - position;
} else {
position = 0;
}
*cur_pos = position;
v4l2_dbg(1, debug, &dev_vcm->sd, "%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)
{
unsigned int position;
unsigned int range;
int ret;
range = dev_vcm->rated_current - dev_vcm->start_current;
if (dest_pos >= dev_vcm->max_logicalpos)
position = dev_vcm->start_current;
else
position = dev_vcm->start_current +
(range * (dev_vcm->max_logicalpos - dest_pos) / dev_vcm->max_logicalpos);
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);
v4l2_dbg(1, debug, &dev_vcm->sd, "%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 > dev_vcm->max_logicalpos) {
dev_err(&client->dev,
"%s dest_pos is error. %d > %d\n",
__func__, dest_pos, dev_vcm->max_logicalpos);
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) /
dev_vcm->max_logicalpos);
v4l2_dbg(1, debug, &dev_vcm->sd,
"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_init(struct i2c_client *client);
static int cn3927v_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
int rval;
struct cn3927v_device *dev_vcm = sd_to_cn3927v_vcm(sd);
unsigned int move_time;
int dac = dev_vcm->start_current;
struct i2c_client *client = v4l2_get_subdevdata(sd);
#ifdef CONFIG_PM
v4l2_info(sd, "%s: enter, power.usage_count(%d)!\n", __func__,
atomic_read(&sd->dev->power.usage_count));
#endif
rval = pm_runtime_get_sync(sd->dev);
if (rval < 0) {
pm_runtime_put_noidle(sd->dev);
return rval;
}
cn3927v_init(client);
usleep_range(1000, 1200);
v4l2_dbg(1, debug, sd, "%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);
}
#ifdef CONFIG_PM
v4l2_info(sd, "%s: exit, power.usage_count(%d)!\n", __func__,
atomic_read(&sd->dev->power.usage_count));
#endif
return 0;
}
static int cn3927v_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct cn3927v_device *dev_vcm = sd_to_cn3927v_vcm(sd);
int dac = dev_vcm->current_lens_pos;
unsigned int move_time;
struct i2c_client *client = v4l2_get_subdevdata(sd);
#ifdef CONFIG_PM
v4l2_info(sd, "%s: enter, power.usage_count(%d)!\n", __func__,
atomic_read(&sd->dev->power.usage_count));
#endif
v4l2_dbg(1, debug, sd, "%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 >= CN3927V_GRADUAL_MOVELENS_STEPS) {
cn3927v_set_dac(dev_vcm, dac);
usleep_range(move_time, move_time + 1000);
dac -= CN3927V_GRADUAL_MOVELENS_STEPS;
if (dac <= 0)
break;
}
if (dac < CN3927V_GRADUAL_MOVELENS_STEPS) {
dac = CN3927V_GRADUAL_MOVELENS_STEPS;
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);
}
pm_runtime_put(sd->dev);
#ifdef CONFIG_PM
v4l2_info(sd, "%s: exit, power.usage_count(%d)!\n", __func__,
atomic_read(&sd->dev->power.usage_count));
#endif
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;
v4l2_dbg(1, debug, &dev_vcm->sd,
"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;
unsigned int max_logicalpos;
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;
v4l2_dbg(1, debug, &dev_vcm->sd, "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;
if (vcm_cfg->start_ma == 0 && vcm_cfg->rated_ma == 0) {
dev_err(&client->dev,
"vcm_cfg err, start_ma %d, rated_ma %d\n",
vcm_cfg->start_ma, vcm_cfg->rated_ma);
return -EINVAL;
}
if (vcm_cfg->rated_ma > CN3927V_MAX_CURRENT) {
dev_warn(&client->dev,
"vcm_cfg use dac value, do convert!\n");
vcm_cfg->rated_ma = vcm_cfg->rated_ma *
dev_vcm->max_current / CN3927V_MAX_REG;
vcm_cfg->start_ma = vcm_cfg->start_ma *
dev_vcm->max_current / CN3927V_MAX_REG;
}
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 if (cmd == RK_VIDIOC_SET_VCM_MAX_LOGICALPOS) {
max_logicalpos = *(unsigned int *)arg;
if (max_logicalpos > 0) {
dev_vcm->max_logicalpos = max_logicalpos;
__v4l2_ctrl_modify_range(dev_vcm->focus,
0, dev_vcm->max_logicalpos, 1, dev_vcm->max_logicalpos);
}
v4l2_dbg(1, debug, &dev_vcm->sd,
"max_logicalpos %d\n", max_logicalpos);
} 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;
unsigned int max_logicalpos;
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 if (cmd == RK_VIDIOC_SET_VCM_MAX_LOGICALPOS) {
ret = copy_from_user(&max_logicalpos, up, sizeof(max_logicalpos));
if (!ret)
ret = cn3927v_ioctl(sd, cmd, &max_logicalpos);
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);
dev_vcm->focus = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FOCUS_ABSOLUTE,
0, dev_vcm->max_logicalpos, 1, dev_vcm->max_logicalpos);
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;
dev_info(&client->dev, "%s(%d) on(%d)\n", __func__, __LINE__, on);
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_check_i2c(struct cn3927v_device *cn3927v,
struct i2c_client *client)
{
struct device *dev = &client->dev;
int ret;
// need to wait 1ms after poweron
usleep_range(1000, 1200);
// Advanced Mode TEST set
ret = cn3927v_write_msg(client, 0xED, 0xAB);
if (!ret)
dev_info(dev, "Check cn3927v connection OK!\n");
else
dev_info(dev, "cn3927v not connect!\n");
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;
}
v4l2_dbg(1, debug, &dev_vcm->sd, "current: %d, %d, %d, dlc_en: %d, t_src: %d, mclk: %d",
dev_vcm->max_current,
dev_vcm->vcm_cfg.start_ma,
dev_vcm->vcm_cfg.rated_ma,
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 device *dev = &client->dev;
struct cn3927v_device *cn3927v_dev;
struct v4l2_subdev *sd;
char facing[2];
int ret;
dev_info(dev, "driver version: %02x.%02x.%02x, probing...",
DRIVER_VERSION >> 16,
(DRIVER_VERSION & 0xff00) >> 8,
DRIVER_VERSION & 0x00ff);
cn3927v_dev = devm_kzalloc(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;
cn3927v_dev->max_logicalpos = VCMDRV_MAX_LOG;
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;
ret = __cn3927v_set_power(cn3927v_dev, true);
if (ret)
goto err_cleanup;
ret = cn3927v_check_i2c(cn3927v_dev, client);
if (ret)
goto err_power_off;
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 = cn3927v_dev->max_logicalpos;
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(dev);
add_sysfs_interfaces(dev);
dev_info(dev, "probing successful\n");
return 0;
err_power_off:
__cn3927v_set_power(cn3927v_dev, false);
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);
// 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;
// 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;
} 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);
#ifdef CONFIG_PM
v4l2_dbg(1, debug, sd, "%s: enter, power.usage_count(%d)!\n", __func__,
atomic_read(&sd->dev->power.usage_count));
#endif
__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);
#ifdef CONFIG_PM
v4l2_dbg(1, debug, sd, "%s: enter, power.usage_count(%d)!\n", __func__,
atomic_read(&sd->dev->power.usage_count));
#endif
__cn3927v_set_power(dev_vcm, true);
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");
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