// SPDX-License-Identifier: GPL-2.0
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/*
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* dw9714 vcm driver
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*
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* Copyright (C) 2019 Fuzhou Rockchip Electronics Co., Ltd.
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*/
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/rk-camera-module.h>
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#include <linux/version.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <linux/rk_vcm_head.h>
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#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x0)
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#define DW9714_NAME "dw9714"
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#define DW9714_MAX_CURRENT 100U
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#define DW9714_MAX_REG 1023U
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#define DW9714_DEFAULT_START_CURRENT 0
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#define DW9714_DEFAULT_RATED_CURRENT 100
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#define DW9714_DEFAULT_STEP_MODE 0xd
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#define DW9714_DEFAULT_DLC_EN 0x0
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#define DW9714_DEFAULT_MCLK 0x0
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#define DW9714_DEFAULT_T_SRC 0x0
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#define REG_NULL 0xFF
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/* dw9714 device structure */
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struct dw9714_device {
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struct v4l2_ctrl_handler ctrls_vcm;
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struct v4l2_subdev sd;
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struct v4l2_device vdev;
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u16 current_val;
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unsigned short current_related_pos;
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unsigned short current_lens_pos;
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unsigned int start_current;
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unsigned int rated_current;
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unsigned int step;
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unsigned int step_mode;
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unsigned int vcm_movefull_t;
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unsigned int dlc_enable;
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unsigned int t_src;
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unsigned int mclk;
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struct timeval start_move_tv;
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struct timeval end_move_tv;
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unsigned long move_ms;
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u32 module_index;
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const char *module_facing;
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struct rk_cam_vcm_cfg vcm_cfg;
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int max_ma;
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};
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struct TimeTabel_s {
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unsigned int t_src;/* time of slew rate control */
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unsigned int step00;/* S[1:0] /MCLK[1:0] step period */
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unsigned int step01;
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unsigned int step10;
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unsigned int step11;
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};
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static const struct TimeTabel_s dw9714_lsc_time_table[] = {/* 1/10us */
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{0b10000, 1360, 2720, 5440, 10880},
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{0b10001, 1300, 2600, 5200, 10400},
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{0b10010, 1250, 2500, 5000, 10000},
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{0b10011, 1200, 2400, 4800, 9600},
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{0b10100, 1160, 2320, 4640, 9280},
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{0b10101, 1120, 2240, 4480, 8960},
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{0b10110, 1080, 2160, 4320, 8640},
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{0b10111, 1040, 2080, 4160, 8320},
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{0b11000, 1010, 2020, 4040, 8080},
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{0b11001, 980, 1960, 3920, 7840},
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{0b11010, 950, 1900, 3800, 7600},
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{0b11011, 920, 1840, 3680, 7360},
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{0b11100, 890, 1780, 3560, 7120},
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{0b11101, 870, 1740, 3480, 6960},
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{0b11110, 850, 1700, 3400, 6800},
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{0b11111, 830, 1660, 3320, 6640},
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{0b00000, 810, 1620, 3240, 6480},
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{0b00001, 790, 1580, 3160, 6320},
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{0b00010, 775, 1550, 3100, 6200},
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{0b00011, 760, 1520, 3040, 6080},
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{0b00100, 745, 1490, 2980, 5960},
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{0b00101, 730, 1460, 2920, 5840},
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{0b00110, 715, 1430, 2860, 5720},
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{0b00111, 700, 1400, 2800, 5600},
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{0b01000, 690, 1380, 2760, 5520},
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{0b01001, 680, 1360, 2720, 5440},
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{0b01010, 670, 1340, 2680, 5360},
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{0b01011, 660, 1320, 2640, 5280},
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{0b01100, 655, 1310, 2620, 5240},
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{0b01101, 650, 1300, 2600, 5200},
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{0b01110, 645, 1290, 2580, 5160},
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{0b01111, 640, 1280, 2560, 5120},
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{REG_NULL, 0, 0, 0, 0},
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};
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static const struct TimeTabel_s dw9714_dlc_time_table[] = {/* us */
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{0b10000, 21250, 10630, 5310, 2660},
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{0b10001, 20310, 10160, 5080, 2540},
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{0b10010, 19530, 9770, 4880, 2440},
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{0b10011, 18750, 9380, 4690, 2340},
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{0b10100, 18130, 9060, 4530, 2270},
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{0b10101, 17500, 8750, 4380, 2190},
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{0b10110, 16880, 8440, 4220, 2110},
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{0b10111, 16250, 8130, 4060, 2030},
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{0b11000, 15780, 7890, 3950, 1970},
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{0b11001, 15310, 7660, 3830, 1910},
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{0b11010, 14840, 7420, 3710, 1860},
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{0b11011, 14380, 7190, 3590, 1800},
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{0b11100, 13910, 6950, 3480, 1740},
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{0b11101, 13590, 6800, 3400, 1700},
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{0b11110, 13280, 6640, 3320, 1660},
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{0b11111, 12970, 6480, 3240, 1620},
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{0b00000, 12660, 6330, 3160, 1580},
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{0b00001, 12340, 6170, 3090, 1540},
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{0b00010, 12110, 6050, 3030, 1510},
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{0b00011, 11880, 5940, 2970, 1480},
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{0b00100, 11640, 5820, 2910, 1460},
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{0b00101, 11410, 5700, 2850, 1430},
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{0b00110, 11170, 5590, 2790, 1400},
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{0b00111, 10940, 5470, 2730, 1370},
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{0b01000, 10780, 5390, 2700, 1350},
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{0b01001, 10630, 5310, 2660, 1330},
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{0b01010, 10470, 5230, 2620, 1310},
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{0b01011, 10310, 5160, 2580, 1290},
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{0b01100, 10230, 5120, 2560, 1280},
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{0b01101, 10160, 5080, 2540, 1270},
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{0b01110, 10080, 5040, 2520, 1260},
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{0b01111, 10000, 5000, 2500, 1250},
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{REG_NULL, 0, 0, 0, 0},
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};
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static inline struct dw9714_device *to_dw9714_vcm(struct v4l2_ctrl *ctrl)
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{
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return container_of(ctrl->handler, struct dw9714_device, ctrls_vcm);
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}
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static inline struct dw9714_device *sd_to_dw9714_vcm(struct v4l2_subdev *subdev)
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{
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return container_of(subdev, struct dw9714_device, sd);
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}
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static int dw9714_read_msg(struct i2c_client *client,
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unsigned char *msb, unsigned char *lsb)
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{
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int ret = 0;
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struct i2c_msg msg[1];
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unsigned char data[2];
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int retries;
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if (!client->adapter) {
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dev_err(&client->dev, "client->adapter NULL\n");
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return -ENODEV;
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}
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for (retries = 0; retries < 5; retries++) {
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msg->addr = client->addr;
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msg->flags = I2C_M_RD;
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msg->len = 2;
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msg->buf = data;
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ret = i2c_transfer(client->adapter, msg, 1);
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if (ret == 1) {
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dev_dbg(&client->dev,
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"%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n",
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__func__, msg->addr, data[0], data[1]);
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*msb = data[0];
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*lsb = data[1];
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return 0;
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}
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dev_info(&client->dev,
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"retrying I2C... %d\n", retries);
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retries++;
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msleep(20);
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}
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dev_err(&client->dev,
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"%s: i2c write to failed with error %d\n", __func__, ret);
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return ret;
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}
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static int dw9714_write_msg(struct i2c_client *client,
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u8 msb, u8 lsb)
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{
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int ret = 0;
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struct i2c_msg msg[1];
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unsigned char data[2];
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int retries;
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if (!client->adapter) {
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dev_err(&client->dev, "client->adapter NULL\n");
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return -ENODEV;
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}
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for (retries = 0; retries < 5; retries++) {
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msg->addr = client->addr;
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msg->flags = 0;
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msg->len = 2;
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msg->buf = data;
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data[0] = msb;
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data[1] = lsb;
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ret = i2c_transfer(client->adapter, msg, 1);
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usleep_range(50, 100);
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if (ret == 1) {
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dev_dbg(&client->dev,
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"%s: vcm i2c ok, addr 0x%x, data 0x%x, 0x%x\n",
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__func__, msg->addr, data[0], data[1]);
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return 0;
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}
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dev_info(&client->dev,
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"retrying I2C... %d\n", retries);
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retries++;
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msleep(20);
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}
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dev_err(&client->dev,
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"i2c write to failed with error %d\n", ret);
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return ret;
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}
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static unsigned int dw9714_move_time(struct dw9714_device *dev_vcm,
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unsigned int move_pos)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
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unsigned int move_time_ms = 200;
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unsigned int step_period_lsc = 0;
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unsigned int step_period_dlc = 0;
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unsigned int codes_per_step = 1;
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unsigned int step_case;
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int table_cnt = 0;
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int i = 0;
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if (dev_vcm->dlc_enable) {
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step_case = dev_vcm->mclk & 0x3;
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table_cnt = sizeof(dw9714_dlc_time_table) /
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sizeof(struct TimeTabel_s);
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for (i = 0; i < table_cnt; i++) {
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if (dw9714_dlc_time_table[i].t_src == dev_vcm->t_src)
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break;
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}
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} else {
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step_case = dev_vcm->step_mode & 0x3;
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table_cnt = sizeof(dw9714_lsc_time_table) /
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sizeof(struct TimeTabel_s);
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for (i = 0; i < table_cnt; i++) {
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if (dw9714_lsc_time_table[i].t_src == dev_vcm->t_src)
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break;
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}
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}
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if (i >= table_cnt)
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i = 0;
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switch (step_case) {
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case 0:
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step_period_lsc = dw9714_lsc_time_table[i].step00;
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step_period_dlc = dw9714_dlc_time_table[i].step00;
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break;
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case 1:
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step_period_lsc = dw9714_lsc_time_table[i].step01;
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step_period_dlc = dw9714_dlc_time_table[i].step01;
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break;
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case 2:
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step_period_lsc = dw9714_lsc_time_table[i].step10;
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step_period_dlc = dw9714_dlc_time_table[i].step10;
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break;
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case 3:
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step_period_lsc = dw9714_lsc_time_table[i].step11;
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step_period_dlc = dw9714_dlc_time_table[i].step11;
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break;
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default:
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dev_err(&client->dev,
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"%s: step_case is error %d\n",
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__func__, step_case);
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break;
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}
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codes_per_step = (dev_vcm->step_mode & 0x0c) >> 2;
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if (codes_per_step > 1)
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codes_per_step = 1 << (codes_per_step - 1);
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if (!dev_vcm->dlc_enable) {
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if (!codes_per_step)
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move_time_ms = (step_period_lsc * move_pos + 9999) / 10000;
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else
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move_time_ms = (step_period_lsc * move_pos / codes_per_step + 9999) / 10000;
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} else {
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move_time_ms = (step_period_dlc + 999) / 1000;
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}
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return move_time_ms;
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}
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static int dw9714_get_pos(struct dw9714_device *dev_vcm,
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unsigned int *cur_pos)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
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int ret;
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unsigned char lsb = 0;
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unsigned char msb = 0;
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unsigned int abs_step;
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ret = dw9714_read_msg(client, &msb, &lsb);
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if (ret != 0)
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goto err;
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abs_step = (((unsigned int)(msb & 0x3FU)) << 4U) |
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(((unsigned int)lsb) >> 4U);
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if (abs_step <= dev_vcm->start_current)
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abs_step = VCMDRV_MAX_LOG;
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else if ((abs_step > dev_vcm->start_current) &&
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(abs_step <= dev_vcm->rated_current))
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abs_step = (dev_vcm->rated_current - abs_step) / dev_vcm->step;
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else
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abs_step = 0;
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*cur_pos = abs_step;
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dev_dbg(&client->dev, "%s: get position %d\n", __func__, *cur_pos);
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return 0;
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err:
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dev_err(&client->dev,
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"%s: failed with error %d\n", __func__, ret);
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return ret;
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}
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static int dw9714_set_pos(struct dw9714_device *dev_vcm,
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unsigned int dest_pos)
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{
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int ret;
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unsigned char lsb = 0;
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unsigned char msb = 0;
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unsigned int position = 0;
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struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
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if (dest_pos >= VCMDRV_MAX_LOG)
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position = dev_vcm->start_current;
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else
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position = dev_vcm->start_current +
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(dev_vcm->step * (VCMDRV_MAX_LOG - dest_pos));
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if (position > DW9714_MAX_REG)
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position = DW9714_MAX_REG;
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dev_vcm->current_lens_pos = position;
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dev_vcm->current_related_pos = dest_pos;
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msb = (0x00U | ((dev_vcm->current_lens_pos & 0x3F0U) >> 4U));
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lsb = (((dev_vcm->current_lens_pos & 0x0FU) << 4U) |
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dev_vcm->step_mode);
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ret = dw9714_write_msg(client, msb, lsb);
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if (ret != 0)
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goto err;
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return ret;
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err:
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dev_err(&client->dev,
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"%s: failed with error %d\n", __func__, ret);
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return ret;
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}
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static int dw9714_get_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct dw9714_device *dev_vcm = to_dw9714_vcm(ctrl);
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if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE)
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return dw9714_get_pos(dev_vcm, &ctrl->val);
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return -EINVAL;
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}
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static int dw9714_set_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct dw9714_device *dev_vcm = to_dw9714_vcm(ctrl);
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struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
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unsigned int dest_pos = ctrl->val;
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int move_pos;
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long mv_us;
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int ret = 0;
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if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE) {
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if (dest_pos > VCMDRV_MAX_LOG) {
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dev_info(&client->dev,
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"%s dest_pos is error. %d > %d\n",
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__func__, dest_pos, VCMDRV_MAX_LOG);
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return -EINVAL;
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}
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/* calculate move time */
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move_pos = dev_vcm->current_related_pos - dest_pos;
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if (move_pos < 0)
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move_pos = -move_pos;
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ret = dw9714_set_pos(dev_vcm, dest_pos);
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if (dev_vcm->dlc_enable)
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dev_vcm->move_ms = dev_vcm->vcm_movefull_t;
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else
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dev_vcm->move_ms =
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((dev_vcm->vcm_movefull_t * (uint32_t)move_pos) / VCMDRV_MAX_LOG);
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dev_dbg(&client->dev,
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"dest_pos %d, move_ms %ld\n",
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dest_pos, dev_vcm->move_ms);
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dev_vcm->start_move_tv = ns_to_timeval(ktime_get_ns());
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mv_us = dev_vcm->start_move_tv.tv_usec +
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dev_vcm->move_ms * 1000;
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if (mv_us >= 1000000) {
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dev_vcm->end_move_tv.tv_sec =
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dev_vcm->start_move_tv.tv_sec + 1;
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dev_vcm->end_move_tv.tv_usec = mv_us - 1000000;
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} else {
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dev_vcm->end_move_tv.tv_sec =
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dev_vcm->start_move_tv.tv_sec;
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dev_vcm->end_move_tv.tv_usec = mv_us;
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}
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}
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return ret;
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}
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static const struct v4l2_ctrl_ops dw9714_vcm_ctrl_ops = {
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.g_volatile_ctrl = dw9714_get_ctrl,
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.s_ctrl = dw9714_set_ctrl,
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};
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static int dw9714_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
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{
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int rval;
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rval = pm_runtime_get_sync(sd->dev);
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if (rval < 0) {
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pm_runtime_put_noidle(sd->dev);
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return rval;
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}
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return 0;
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}
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static int dw9714_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
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{
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pm_runtime_put(sd->dev);
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return 0;
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}
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static const struct v4l2_subdev_internal_ops dw9714_int_ops = {
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.open = dw9714_open,
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.close = dw9714_close,
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};
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static void dw9714_update_vcm_cfg(struct dw9714_device *dev_vcm)
|
{
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struct i2c_client *client = v4l2_get_subdevdata(&dev_vcm->sd);
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int cur_dist;
|
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if (dev_vcm->max_ma == 0) {
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dev_err(&client->dev, "max current is zero");
|
return;
|
}
|
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cur_dist = dev_vcm->vcm_cfg.rated_ma - dev_vcm->vcm_cfg.start_ma;
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cur_dist = cur_dist * DW9714_MAX_REG / dev_vcm->max_ma;
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dev_vcm->step = (cur_dist + (VCMDRV_MAX_LOG - 1)) / VCMDRV_MAX_LOG;
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dev_vcm->start_current = dev_vcm->vcm_cfg.start_ma *
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DW9714_MAX_REG / dev_vcm->max_ma;
|
dev_vcm->rated_current = dev_vcm->start_current +
|
VCMDRV_MAX_LOG * dev_vcm->step;
|
dev_vcm->step_mode = dev_vcm->vcm_cfg.step_mode;
|
|
dev_dbg(&client->dev,
|
"vcm_cfg: %d, %d, %d, max_ma %d\n",
|
dev_vcm->vcm_cfg.start_ma,
|
dev_vcm->vcm_cfg.rated_ma,
|
dev_vcm->vcm_cfg.step_mode,
|
dev_vcm->max_ma);
|
}
|
|
static long dw9714_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
|
{
|
struct dw9714_device *dev_vcm = sd_to_dw9714_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, "dw9714_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;
|
dw9714_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 dw9714_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 = dw9714_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 = dw9714_ioctl(sd, RK_VIDIOC_GET_VCM_CFG, &vcm_cfg);
|
if (!ret)
|
ret = copy_to_user(up, &vcm_cfg, sizeof(vcm_cfg));
|
} else if (cmd == RK_VIDIOC_SET_VCM_CFG) {
|
ret = copy_from_user(&vcm_cfg, up, sizeof(vcm_cfg));
|
if (!ret)
|
ret = dw9714_ioctl(sd, cmd, &vcm_cfg);
|
} else {
|
dev_err(&client->dev,
|
"cmd 0x%x not supported\n", cmd);
|
return -EINVAL;
|
}
|
|
return ret;
|
}
|
#endif
|
|
static const struct v4l2_subdev_core_ops dw9714_core_ops = {
|
.ioctl = dw9714_ioctl,
|
#ifdef CONFIG_COMPAT
|
.compat_ioctl32 = dw9714_compat_ioctl32
|
#endif
|
};
|
|
static const struct v4l2_subdev_ops dw9714_ops = {
|
.core = &dw9714_core_ops,
|
};
|
|
static void dw9714_subdev_cleanup(struct dw9714_device *dw9714_dev)
|
{
|
v4l2_device_unregister_subdev(&dw9714_dev->sd);
|
v4l2_device_unregister(&dw9714_dev->vdev);
|
v4l2_ctrl_handler_free(&dw9714_dev->ctrls_vcm);
|
media_entity_cleanup(&dw9714_dev->sd.entity);
|
}
|
|
static int dw9714_init_controls(struct dw9714_device *dev_vcm)
|
{
|
struct v4l2_ctrl_handler *hdl = &dev_vcm->ctrls_vcm;
|
const struct v4l2_ctrl_ops *ops = &dw9714_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;
|
}
|
|
static int dw9714_probe(struct i2c_client *client,
|
const struct i2c_device_id *id)
|
{
|
struct device_node *np = of_node_get(client->dev.of_node);
|
struct dw9714_device *dw9714_dev;
|
unsigned int max_ma, start_ma, rated_ma, step_mode;
|
unsigned int dlc_en, mclk, t_src;
|
struct v4l2_subdev *sd;
|
char facing[2];
|
int ret;
|
|
dev_info(&client->dev, "probing...\n");
|
if (of_property_read_u32(np,
|
OF_CAMERA_VCMDRV_MAX_CURRENT,
|
(unsigned int *)&max_ma)) {
|
max_ma = DW9714_MAX_CURRENT;
|
dev_info(&client->dev,
|
"could not get module %s from dts!\n",
|
OF_CAMERA_VCMDRV_MAX_CURRENT);
|
}
|
if (max_ma == 0)
|
max_ma = DW9714_MAX_CURRENT;
|
|
if (of_property_read_u32(np,
|
OF_CAMERA_VCMDRV_START_CURRENT,
|
(unsigned int *)&start_ma)) {
|
start_ma = DW9714_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 *)&rated_ma)) {
|
rated_ma = DW9714_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 *)&step_mode)) {
|
step_mode = DW9714_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_DLC_ENABLE,
|
(unsigned int *)&dlc_en)) {
|
dlc_en = DW9714_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 *)&mclk)) {
|
mclk = DW9714_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 *)&t_src)) {
|
t_src = DW9714_DEFAULT_T_SRC;
|
dev_info(&client->dev,
|
"could not get module %s from dts!\n",
|
OF_CAMERA_VCMDRV_T_SRC);
|
}
|
|
dw9714_dev = devm_kzalloc(&client->dev, sizeof(*dw9714_dev),
|
GFP_KERNEL);
|
if (dw9714_dev == NULL)
|
return -ENOMEM;
|
|
ret = of_property_read_u32(np, RKMODULE_CAMERA_MODULE_INDEX,
|
&dw9714_dev->module_index);
|
ret |= of_property_read_string(np, RKMODULE_CAMERA_MODULE_FACING,
|
&dw9714_dev->module_facing);
|
if (ret) {
|
dev_err(&client->dev,
|
"could not get module information!\n");
|
return -EINVAL;
|
}
|
|
v4l2_i2c_subdev_init(&dw9714_dev->sd, client, &dw9714_ops);
|
dw9714_dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
dw9714_dev->sd.internal_ops = &dw9714_int_ops;
|
|
ret = dw9714_init_controls(dw9714_dev);
|
if (ret)
|
goto err_cleanup;
|
|
ret = media_entity_pads_init(&dw9714_dev->sd.entity, 0, NULL);
|
if (ret < 0)
|
goto err_cleanup;
|
|
sd = &dw9714_dev->sd;
|
sd->entity.function = MEDIA_ENT_F_LENS;
|
|
memset(facing, 0, sizeof(facing));
|
if (strcmp(dw9714_dev->module_facing, "back") == 0)
|
facing[0] = 'b';
|
else
|
facing[0] = 'f';
|
|
snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
|
dw9714_dev->module_index, facing,
|
DW9714_NAME, dev_name(sd->dev));
|
ret = v4l2_async_register_subdev(sd);
|
if (ret)
|
dev_err(&client->dev, "v4l2 async register subdev failed\n");
|
|
dw9714_dev->max_ma = max_ma;
|
dw9714_dev->vcm_cfg.start_ma = start_ma;
|
dw9714_dev->vcm_cfg.rated_ma = rated_ma;
|
dw9714_dev->vcm_cfg.step_mode = step_mode;
|
dw9714_update_vcm_cfg(dw9714_dev);
|
dw9714_dev->move_ms = 0;
|
dw9714_dev->current_related_pos = VCMDRV_MAX_LOG;
|
dw9714_dev->start_move_tv = ns_to_timeval(ktime_get_ns());
|
dw9714_dev->end_move_tv = ns_to_timeval(ktime_get_ns());
|
|
dw9714_dev->dlc_enable = dlc_en;
|
dw9714_dev->mclk = mclk;
|
dw9714_dev->t_src = t_src;
|
|
dw9714_dev->vcm_movefull_t =
|
dw9714_move_time(dw9714_dev, DW9714_MAX_REG);
|
pm_runtime_set_active(&client->dev);
|
pm_runtime_enable(&client->dev);
|
pm_runtime_idle(&client->dev);
|
|
dev_info(&client->dev, "probing successful\n");
|
|
return 0;
|
|
err_cleanup:
|
dw9714_subdev_cleanup(dw9714_dev);
|
dev_err(&client->dev, "Probe failed: %d\n", ret);
|
return ret;
|
}
|
|
static int dw9714_remove(struct i2c_client *client)
|
{
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
struct dw9714_device *dw9714_dev = sd_to_dw9714_vcm(sd);
|
|
pm_runtime_disable(&client->dev);
|
dw9714_subdev_cleanup(dw9714_dev);
|
|
return 0;
|
}
|
|
static int dw9714_init(struct i2c_client *client)
|
{
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
struct dw9714_device *dw9714_dev = sd_to_dw9714_vcm(sd);
|
unsigned char data = 0x0;
|
int ret = 0;
|
|
// need to wait 12ms after poweron
|
usleep_range(12000, 12500);
|
|
ret = dw9714_write_msg(client, 0xEC, 0xA3);
|
if (ret)
|
goto err;
|
|
data = (dw9714_dev->mclk & 0x3) | 0x04 |
|
((dw9714_dev->dlc_enable << 0x3) & 0x08);
|
ret = dw9714_write_msg(client, 0xA1, data);
|
if (ret)
|
goto err;
|
|
data = (dw9714_dev->t_src << 0x3) & 0xf8;
|
ret = dw9714_write_msg(client, 0xF2, data);
|
if (ret)
|
goto err;
|
|
ret = dw9714_write_msg(client, 0xDC, 0x51);
|
if (ret)
|
goto err;
|
|
/* set normal mode */
|
ret = dw9714_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 dw9714_vcm_suspend(struct device *dev)
|
{
|
return 0;
|
}
|
|
static int __maybe_unused dw9714_vcm_resume(struct device *dev)
|
{
|
struct i2c_client *client = to_i2c_client(dev);
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
struct dw9714_device *dev_vcm = sd_to_dw9714_vcm(sd);
|
|
dw9714_init(client);
|
dw9714_set_pos(dev_vcm, dev_vcm->current_related_pos);
|
return 0;
|
}
|
|
static const struct i2c_device_id dw9714_id_table[] = {
|
{ DW9714_NAME, 0 },
|
{ { 0 } }
|
};
|
MODULE_DEVICE_TABLE(i2c, dw9714_id_table);
|
|
static const struct of_device_id dw9714_of_table[] = {
|
{ .compatible = "dongwoon,dw9714" },
|
{ { 0 } }
|
};
|
MODULE_DEVICE_TABLE(of, dw9714_of_table);
|
|
static const struct dev_pm_ops dw9714_pm_ops = {
|
SET_SYSTEM_SLEEP_PM_OPS(dw9714_vcm_suspend, dw9714_vcm_resume)
|
SET_RUNTIME_PM_OPS(dw9714_vcm_suspend, dw9714_vcm_resume, NULL)
|
};
|
|
static struct i2c_driver dw9714_i2c_driver = {
|
.driver = {
|
.name = DW9714_NAME,
|
.pm = &dw9714_pm_ops,
|
.of_match_table = dw9714_of_table,
|
},
|
.probe = &dw9714_probe,
|
.remove = &dw9714_remove,
|
.id_table = dw9714_id_table,
|
};
|
|
module_i2c_driver(dw9714_i2c_driver);
|
|
MODULE_DESCRIPTION("DW9714 VCM driver");
|
MODULE_LICENSE("GPL v2");
|
