1101 lines
28 KiB
C
1101 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* dw9763 vcm driver
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*
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* Copyright (C) 2022 Rockchip Electronics Co., Ltd.
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*/
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// #define DEBUG
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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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#include <linux/compat.h>
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#include <linux/regulator/consumer.h>
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#define DRIVER_VERSION KERNEL_VERSION(0, 0x01, 0x1)
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#define DW9763_NAME "dw9763"
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#define DW9763_MAX_CURRENT 120U
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#define DW9763_MAX_REG 1023U
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#define DW9763_GRADUAL_MOVELENS_STEPS 32
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#define DW9763_DEFAULT_START_CURRENT 20
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#define DW9763_DEFAULT_RATED_CURRENT 90
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#define DW9763_DEFAULT_STEP_MODE 0x3
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#define DW9763_DEFAULT_T_SACT 0x20
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#define DW9763_DEFAULT_T_DIV 0x1
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#define REG_NULL 0xFF
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#define DW9763_CHIP_ID 0xF9
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#define DW9763_REG_CHIP_ID 0x00
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enum mode_e {
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SAC1_MODE,
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SAC2_MODE,
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SAC2_5_MODE,
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SAC3_MODE,
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SAC4_MODE = 5,
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DIRECT_MODE,
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};
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "debug level (0-2)");
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/* dw9763 device structure */
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struct dw9763_device {
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struct v4l2_ctrl_handler ctrls_vcm;
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struct v4l2_ctrl *focus;
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struct i2c_client *client;
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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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struct gpio_desc *power_gpio;
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unsigned short current_related_pos;
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unsigned short current_lens_pos;
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unsigned int max_current;
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unsigned int start_current;
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unsigned int rated_current;
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unsigned int step_mode;
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unsigned int vcm_movefull_t;
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unsigned int t_src;
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unsigned int t_div;
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unsigned int max_logicalpos;
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struct __kernel_old_timeval start_move_tv;
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struct __kernel_old_timeval end_move_tv;
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unsigned long move_us;
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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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struct mutex lock;
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struct regulator *supply;
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bool power_on;
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atomic_t open_cnt;
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};
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static inline struct dw9763_device *to_dw9763_vcm(struct v4l2_ctrl *ctrl)
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{
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return container_of(ctrl->handler, struct dw9763_device, ctrls_vcm);
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}
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static inline struct dw9763_device *sd_to_dw9763_vcm(struct v4l2_subdev *subdev)
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{
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return container_of(subdev, struct dw9763_device, sd);
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}
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static int dw9763_write_reg(struct i2c_client *client, u8 reg,
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u32 len, u32 val)
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{
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u32 buf_i, val_i;
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u8 buf[5];
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u8 *val_p;
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__be32 val_be;
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struct dw9763_device *dev_vcm = i2c_get_clientdata(client);
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if (len > 4)
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return -EINVAL;
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buf[0] = reg;
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val_be = cpu_to_be32(val);
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val_p = (u8 *)&val_be;
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buf_i = 1;
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val_i = 4 - len;
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while (val_i < 4)
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buf[buf_i++] = val_p[val_i++];
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if (i2c_master_send(client, buf, len + 1) != len + 1) {
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dev_err(&client->dev, "Failed to write 0x%04x,0x%x\n", reg, val);
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return -EIO;
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}
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v4l2_dbg(1, debug, &dev_vcm->sd, "succeed to write 0x%04x,0x%x\n", reg, val);
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return 0;
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}
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static int dw9763_read_reg(struct i2c_client *client,
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u8 reg,
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unsigned int len,
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u32 *val)
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{
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struct i2c_msg msgs[2];
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u8 *data_be_p;
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__be32 data_be = 0;
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int ret;
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struct dw9763_device *dev_vcm = i2c_get_clientdata(client);
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if (len > 4 || !len)
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return -EINVAL;
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data_be_p = (u8 *)&data_be;
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/* Write register address */
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msgs[0].addr = client->addr;
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msgs[0].flags = 0;
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msgs[0].len = 1;
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msgs[0].buf = (u8 *)®
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/* Read data from register */
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msgs[1].addr = client->addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = len;
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msgs[1].buf = &data_be_p[4 - len];
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ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
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if (ret != ARRAY_SIZE(msgs))
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return -EIO;
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*val = be32_to_cpu(data_be);
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v4l2_dbg(1, debug, &dev_vcm->sd, "succeed to read 0x%04x,0x%x\n", reg, *val);
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return 0;
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}
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static unsigned int dw9763_move_time_div(struct dw9763_device *dev_vcm,
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unsigned int move_time_us)
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{
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struct i2c_client *client = dev_vcm->client;
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unsigned int move_time = 0;
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switch (dev_vcm->t_div) {
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case 0:
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move_time = move_time_us * 2;
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break;
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case 1:
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move_time = move_time_us;
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break;
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case 2:
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move_time = move_time_us / 2;
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break;
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case 3:
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move_time = move_time_us / 4;
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break;
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case 4:
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move_time = move_time_us * 8;
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break;
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case 5:
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move_time = move_time_us * 4;
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break;
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default:
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dev_err(&client->dev, "%s: t_div parameter err %d\n", __func__, dev_vcm->t_div);
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move_time = move_time_us;
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break;
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}
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return move_time;
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}
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static unsigned int dw9763_move_time(struct dw9763_device *dev_vcm,
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unsigned int move_pos)
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{
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struct i2c_client *client = dev_vcm->client;
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unsigned int move_time_us = 0;
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switch (dev_vcm->step_mode) {
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case SAC1_MODE:
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case SAC2_MODE:
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case SAC2_5_MODE:
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case SAC3_MODE:
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case SAC4_MODE:
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move_time_us = 6300 + dev_vcm->t_src * 100;
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move_time_us = dw9763_move_time_div(dev_vcm, move_time_us);
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break;
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case DIRECT_MODE:
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move_time_us = 30000;
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break;
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default:
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dev_err(&client->dev,
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"%s: step_mode is error %d\n",
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__func__, dev_vcm->step_mode);
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break;
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}
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v4l2_dbg(1, debug, &dev_vcm->sd,
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"%s: vcm_movefull_t is: %d us\n",
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__func__, move_time_us);
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return ((move_time_us + 500) / 1000);
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}
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static int dw9763_set_dac(struct dw9763_device *dev_vcm,
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unsigned int dest_dac)
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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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u32 is_busy, i;
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for (i = 0; i < 10; i++) {
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ret = dw9763_read_reg(client, 0x05, 1, &is_busy);
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if (!ret && !(is_busy & 0x01))
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break;
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usleep_range(100, 200);
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}
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ret = dw9763_write_reg(client, 0x03, 2, dest_dac);
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if (ret != 0)
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goto err;
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v4l2_dbg(1, debug, &dev_vcm->sd,
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"%s: set reg val %d\n", __func__, dest_dac);
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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 dw9763_get_dac(struct dw9763_device *dev_vcm, unsigned int *cur_dac)
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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 int abs_step;
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ret = dw9763_read_reg(client, 0x03, 2, &abs_step);
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if (ret != 0)
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goto err;
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*cur_dac = abs_step;
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v4l2_dbg(1, debug, &dev_vcm->sd, "%s: get dac %d\n", __func__, *cur_dac);
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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 dw9763_get_pos(struct dw9763_device *dev_vcm,
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unsigned int *cur_pos)
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{
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struct i2c_client *client = dev_vcm->client;
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unsigned int dac, position, range;
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int ret;
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range = dev_vcm->rated_current - dev_vcm->start_current;
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ret = dw9763_read_reg(client, 0x03, 2, &dac);
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if (ret != 0)
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goto err;
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if (dac <= dev_vcm->start_current) {
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position = dev_vcm->max_logicalpos;
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} else if ((dac > dev_vcm->start_current) &&
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(dac <= dev_vcm->rated_current)) {
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position = (dac - dev_vcm->start_current) * dev_vcm->max_logicalpos / range;
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position = dev_vcm->max_logicalpos - position;
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} else {
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position = 0;
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}
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*cur_pos = position;
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v4l2_dbg(1, debug, &dev_vcm->sd, "%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 dw9763_set_pos(struct dw9763_device *dev_vcm,
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unsigned int dest_pos)
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{
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unsigned int position;
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unsigned int range;
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int ret;
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range = dev_vcm->rated_current - dev_vcm->start_current;
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if (dest_pos >= dev_vcm->max_logicalpos)
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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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(range * (dev_vcm->max_logicalpos - dest_pos) / dev_vcm->max_logicalpos);
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if (position > DW9763_MAX_REG)
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position = DW9763_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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ret = dw9763_set_dac(dev_vcm, position);
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v4l2_dbg(1, debug, &dev_vcm->sd, "%s: set position %d, dac %d\n",
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__func__, dest_pos, position);
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return ret;
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}
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static int dw9763_get_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct dw9763_device *dev_vcm = to_dw9763_vcm(ctrl);
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if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE)
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return dw9763_get_pos(dev_vcm, &ctrl->val);
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return -EINVAL;
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}
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static int dw9763_set_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct dw9763_device *dev_vcm = to_dw9763_vcm(ctrl);
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struct i2c_client *client = dev_vcm->client;
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unsigned int dest_pos = ctrl->val;
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long mv_us;
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int ret = 0;
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v4l2_dbg(1, debug, &dev_vcm->sd, "ctrl->id: 0x%x, ctrl->val: 0x%x\n",
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ctrl->id, ctrl->val);
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if (ctrl->id == V4L2_CID_FOCUS_ABSOLUTE) {
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if (dest_pos > dev_vcm->max_logicalpos) {
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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, dev_vcm->max_logicalpos);
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return -EINVAL;
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}
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ret = dw9763_set_pos(dev_vcm, dest_pos);
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dev_vcm->move_us = dev_vcm->vcm_movefull_t * 1000;
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v4l2_dbg(1, debug, &dev_vcm->sd,
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"dest_pos %d, move_us %ld\n",
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dest_pos, dev_vcm->move_us);
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dev_vcm->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
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mv_us = dev_vcm->start_move_tv.tv_usec +
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dev_vcm->move_us;
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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 dw9763_vcm_ctrl_ops = {
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.g_volatile_ctrl = dw9763_get_ctrl,
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.s_ctrl = dw9763_set_ctrl,
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};
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static int dw9763_init(struct i2c_client *client);
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static int dw9763_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
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{
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int rval;
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struct dw9763_device *dev_vcm = sd_to_dw9763_vcm(sd);
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unsigned int move_time;
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int dac = dev_vcm->start_current;
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struct i2c_client *client = dev_vcm->client;
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#ifdef CONFIG_PM
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v4l2_info(sd, "%s: enter, power.usage_count(%d)!\n", __func__,
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atomic_read(&sd->dev->power.usage_count));
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#endif
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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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if (dev_vcm->power_on && atomic_inc_return(&dev_vcm->open_cnt) == 1) {
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dw9763_init(client);
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v4l2_dbg(1, debug, sd, "%s: current_lens_pos %d, current_related_pos %d\n",
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__func__, dev_vcm->current_lens_pos, dev_vcm->current_related_pos);
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move_time = 1000 * dw9763_move_time(dev_vcm, DW9763_GRADUAL_MOVELENS_STEPS);
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while (dac <= dev_vcm->current_lens_pos) {
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dw9763_set_dac(dev_vcm, dac);
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usleep_range(move_time, move_time + 100);
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dac += DW9763_GRADUAL_MOVELENS_STEPS;
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if (dac > dev_vcm->current_lens_pos)
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break;
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}
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if (dac > dev_vcm->current_lens_pos) {
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dac = dev_vcm->current_lens_pos;
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dw9763_set_dac(dev_vcm, dac);
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}
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}
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#ifdef CONFIG_PM
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v4l2_info(sd, "%s: exit, power.usage_count(%d)!\n", __func__,
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atomic_read(&sd->dev->power.usage_count));
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#endif
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return 0;
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}
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static int dw9763_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
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{
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struct dw9763_device *dev_vcm = sd_to_dw9763_vcm(sd);
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int dac = dev_vcm->current_lens_pos;
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unsigned int move_time;
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int ret;
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struct i2c_client *client = dev_vcm->client;
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#ifdef CONFIG_PM
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v4l2_info(sd, "%s: enter, power.usage_count(%d)!\n", __func__,
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atomic_read(&sd->dev->power.usage_count));
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#endif
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if (dev_vcm->power_on && atomic_dec_return(&dev_vcm->open_cnt) == 0) {
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v4l2_dbg(1, debug, sd, "%s: current_lens_pos %d, current_related_pos %d\n",
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__func__, dev_vcm->current_lens_pos, dev_vcm->current_related_pos);
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dac -= DW9763_GRADUAL_MOVELENS_STEPS;
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move_time = 1000 * dw9763_move_time(dev_vcm, DW9763_GRADUAL_MOVELENS_STEPS);
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while (dac >= DW9763_GRADUAL_MOVELENS_STEPS) {
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dw9763_set_dac(dev_vcm, dac);
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usleep_range(move_time, move_time + 1000);
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dac -= DW9763_GRADUAL_MOVELENS_STEPS;
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if (dac <= 0)
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break;
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}
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if (dac < DW9763_GRADUAL_MOVELENS_STEPS) {
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dac = DW9763_GRADUAL_MOVELENS_STEPS / 2;
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dw9763_set_dac(dev_vcm, dac);
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}
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/* set to power down mode */
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ret = dw9763_write_reg(client, 0x02, 1, 0x01);
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if (ret)
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dev_err(&client->dev, "failed to set power down mode!\n");
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}
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pm_runtime_put(sd->dev);
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#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 dw9763_int_ops = {
|
|
.open = dw9763_open,
|
|
.close = dw9763_close,
|
|
};
|
|
|
|
static void dw9763_update_vcm_cfg(struct dw9763_device *dev_vcm)
|
|
{
|
|
struct i2c_client *client = dev_vcm->client;
|
|
|
|
if (dev_vcm->max_current == 0) {
|
|
dev_err(&client->dev, "max current is zero");
|
|
return;
|
|
}
|
|
|
|
if (dev_vcm->vcm_cfg.start_ma == dev_vcm->vcm_cfg.rated_ma) {
|
|
dev_err(&client->dev,
|
|
"start current %d can not equal to rated current %d",
|
|
dev_vcm->vcm_cfg.start_ma, dev_vcm->vcm_cfg.rated_ma);
|
|
return;
|
|
}
|
|
|
|
dev_vcm->start_current = dev_vcm->vcm_cfg.start_ma *
|
|
DW9763_MAX_REG / dev_vcm->max_current;
|
|
dev_vcm->rated_current = dev_vcm->vcm_cfg.rated_ma *
|
|
DW9763_MAX_REG / dev_vcm->max_current;
|
|
dev_vcm->step_mode = dev_vcm->vcm_cfg.step_mode;
|
|
|
|
dev_info(&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 dw9763_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
|
|
{
|
|
struct dw9763_device *dev_vcm = sd_to_dw9763_vcm(sd);
|
|
struct i2c_client *client = dev_vcm->client;
|
|
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, "dw9763_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;
|
|
}
|
|
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;
|
|
dw9763_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);
|
|
}
|
|
dev_dbg(&client->dev,
|
|
"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 dw9763_compat_ioctl32(struct v4l2_subdev *sd,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct dw9763_device *dev_vcm = sd_to_dw9763_vcm(sd);
|
|
struct i2c_client *client = dev_vcm->client;
|
|
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 = dw9763_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 = dw9763_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 = dw9763_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 = dw9763_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 dw9763_core_ops = {
|
|
.ioctl = dw9763_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl32 = dw9763_compat_ioctl32
|
|
#endif
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops dw9763_ops = {
|
|
.core = &dw9763_core_ops,
|
|
};
|
|
|
|
static void dw9763_subdev_cleanup(struct dw9763_device *dw9763_dev)
|
|
{
|
|
v4l2_device_unregister_subdev(&dw9763_dev->sd);
|
|
v4l2_device_unregister(&dw9763_dev->vdev);
|
|
v4l2_ctrl_handler_free(&dw9763_dev->ctrls_vcm);
|
|
media_entity_cleanup(&dw9763_dev->sd.entity);
|
|
}
|
|
|
|
static int dw9763_init_controls(struct dw9763_device *dev_vcm)
|
|
{
|
|
struct v4l2_ctrl_handler *hdl = &dev_vcm->ctrls_vcm;
|
|
const struct v4l2_ctrl_ops *ops = &dw9763_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 dw9763_device *dev_vcm = sd_to_dw9763_vcm(sd);
|
|
int val = 0;
|
|
int ret = 0;
|
|
|
|
ret = kstrtoint(buf, 0, &val);
|
|
if (!ret)
|
|
dw9763_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 dw9763_device *dev_vcm = sd_to_dw9763_vcm(sd);
|
|
unsigned int dac = 0;
|
|
|
|
dw9763_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 __dw9763_set_power(struct dw9763_device *dw9763, bool on)
|
|
{
|
|
struct i2c_client *client = dw9763->client;
|
|
int ret = 0;
|
|
|
|
dev_info(&client->dev, "%s(%d) on(%d)\n", __func__, __LINE__, on);
|
|
|
|
if (dw9763->power_on == !!on)
|
|
goto unlock_and_return;
|
|
|
|
if (on) {
|
|
ret = regulator_enable(dw9763->supply);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "Failed to enable regulator\n");
|
|
goto unlock_and_return;
|
|
}
|
|
dw9763->power_on = true;
|
|
} else {
|
|
ret = regulator_disable(dw9763->supply);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "Failed to disable regulator\n");
|
|
goto unlock_and_return;
|
|
}
|
|
dw9763->power_on = false;
|
|
}
|
|
|
|
unlock_and_return:
|
|
return ret;
|
|
}
|
|
|
|
static int dw9763_configure_regulator(struct dw9763_device *dw9763)
|
|
{
|
|
struct i2c_client *client = dw9763->client;
|
|
int ret = 0;
|
|
|
|
dw9763->supply = devm_regulator_get(&client->dev, "avdd");
|
|
if (IS_ERR(dw9763->supply)) {
|
|
ret = PTR_ERR(dw9763->supply);
|
|
if (ret != -EPROBE_DEFER)
|
|
dev_err(&client->dev, "could not get regulator avdd\n");
|
|
return ret;
|
|
}
|
|
dw9763->power_on = false;
|
|
return ret;
|
|
}
|
|
|
|
static int __maybe_unused dw9763_check_id(struct dw9763_device *dw9763_dev)
|
|
{
|
|
int ret = 0;
|
|
unsigned int pid = 0x00;
|
|
struct i2c_client *client = dw9763_dev->client;
|
|
struct device *dev = &client->dev;
|
|
|
|
__dw9763_set_power(dw9763_dev, true);
|
|
ret = dw9763_read_reg(client, DW9763_REG_CHIP_ID, 1, &pid);
|
|
|
|
if (pid != DW9763_CHIP_ID) {
|
|
dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", pid, ret);
|
|
return -ENODEV;
|
|
}
|
|
|
|
dev_info(&dw9763_dev->client->dev,
|
|
"Detected dw9763 vcm id:0x%x\n", DW9763_CHIP_ID);
|
|
return 0;
|
|
}
|
|
|
|
static int dw9763_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device_node *np = of_node_get(client->dev.of_node);
|
|
struct dw9763_device *dw9763_dev;
|
|
unsigned int max_current, start_ma, rated_ma, step_mode;
|
|
unsigned int t_src, t_div;
|
|
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_current)) {
|
|
max_current = DW9763_MAX_CURRENT;
|
|
dev_info(&client->dev,
|
|
"could not get module %s from dts!\n",
|
|
OF_CAMERA_VCMDRV_MAX_CURRENT);
|
|
}
|
|
if (max_current == 0)
|
|
max_current = DW9763_MAX_CURRENT;
|
|
|
|
if (of_property_read_u32(np,
|
|
OF_CAMERA_VCMDRV_START_CURRENT,
|
|
(unsigned int *)&start_ma)) {
|
|
start_ma = DW9763_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 = DW9763_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 = DW9763_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_T_SRC,
|
|
(unsigned int *)&t_src)) {
|
|
t_src = DW9763_DEFAULT_T_SACT;
|
|
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_T_DIV,
|
|
(unsigned int *)&t_div)) {
|
|
t_div = DW9763_DEFAULT_T_DIV;
|
|
dev_info(&client->dev,
|
|
"could not get module %s from dts!\n",
|
|
OF_CAMERA_VCMDRV_T_DIV);
|
|
}
|
|
|
|
dw9763_dev = devm_kzalloc(&client->dev, sizeof(*dw9763_dev),
|
|
GFP_KERNEL);
|
|
if (dw9763_dev == NULL)
|
|
return -ENOMEM;
|
|
|
|
ret = of_property_read_u32(np, RKMODULE_CAMERA_MODULE_INDEX,
|
|
&dw9763_dev->module_index);
|
|
ret |= of_property_read_string(np, RKMODULE_CAMERA_MODULE_FACING,
|
|
&dw9763_dev->module_facing);
|
|
if (ret) {
|
|
dev_err(&client->dev,
|
|
"could not get module information!\n");
|
|
return -EINVAL;
|
|
}
|
|
dw9763_dev->client = client;
|
|
dw9763_dev->power_gpio = devm_gpiod_get(&client->dev,
|
|
"power", GPIOD_OUT_LOW);
|
|
if (IS_ERR(dw9763_dev->power_gpio)) {
|
|
dw9763_dev->power_gpio = NULL;
|
|
dev_warn(&client->dev,
|
|
"Failed to get power-gpios, maybe no use\n");
|
|
}
|
|
ret = dw9763_configure_regulator(dw9763_dev);
|
|
if (ret) {
|
|
dev_err(&client->dev, "Failed to get power regulator!\n");
|
|
return ret;
|
|
}
|
|
|
|
v4l2_i2c_subdev_init(&dw9763_dev->sd, client, &dw9763_ops);
|
|
dw9763_dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
dw9763_dev->sd.internal_ops = &dw9763_int_ops;
|
|
|
|
dw9763_dev->max_logicalpos = VCMDRV_MAX_LOG;
|
|
ret = dw9763_init_controls(dw9763_dev);
|
|
if (ret)
|
|
goto err_cleanup;
|
|
|
|
ret = media_entity_pads_init(&dw9763_dev->sd.entity, 0, NULL);
|
|
if (ret < 0)
|
|
goto err_cleanup;
|
|
|
|
ret = dw9763_check_id(dw9763_dev);
|
|
if (ret)
|
|
goto err_power_off;
|
|
|
|
sd = &dw9763_dev->sd;
|
|
sd->entity.function = MEDIA_ENT_F_LENS;
|
|
|
|
memset(facing, 0, sizeof(facing));
|
|
if (strcmp(dw9763_dev->module_facing, "back") == 0)
|
|
facing[0] = 'b';
|
|
else
|
|
facing[0] = 'f';
|
|
|
|
snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
|
|
dw9763_dev->module_index, facing,
|
|
DW9763_NAME, dev_name(sd->dev));
|
|
ret = v4l2_async_register_subdev(sd);
|
|
if (ret)
|
|
dev_err(&client->dev, "v4l2 async register subdev failed\n");
|
|
|
|
dw9763_dev->max_current = max_current;
|
|
dw9763_dev->vcm_cfg.start_ma = start_ma;
|
|
dw9763_dev->vcm_cfg.rated_ma = rated_ma;
|
|
dw9763_dev->vcm_cfg.step_mode = step_mode;
|
|
dw9763_update_vcm_cfg(dw9763_dev);
|
|
dw9763_dev->move_us = 0;
|
|
dw9763_dev->current_related_pos = dw9763_dev->max_logicalpos;
|
|
dw9763_dev->start_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
|
|
dw9763_dev->end_move_tv = ns_to_kernel_old_timeval(ktime_get_ns());
|
|
|
|
dw9763_dev->t_src = t_src;
|
|
dw9763_dev->t_div = t_div;
|
|
|
|
i2c_set_clientdata(client, dw9763_dev);
|
|
mutex_init(&dw9763_dev->lock);
|
|
|
|
dw9763_dev->vcm_movefull_t =
|
|
dw9763_move_time(dw9763_dev, DW9763_MAX_REG);
|
|
atomic_set(&dw9763_dev->open_cnt, 0);
|
|
pm_runtime_set_active(&client->dev);
|
|
pm_runtime_enable(&client->dev);
|
|
pm_runtime_idle(&client->dev);
|
|
|
|
add_sysfs_interfaces(&client->dev);
|
|
dev_info(&client->dev, "probing successful\n");
|
|
|
|
return 0;
|
|
err_power_off:
|
|
__dw9763_set_power(dw9763_dev, false);
|
|
|
|
err_cleanup:
|
|
dw9763_subdev_cleanup(dw9763_dev);
|
|
|
|
dev_err(&client->dev, "Probe failed: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void dw9763_remove(struct i2c_client *client)
|
|
{
|
|
struct dw9763_device *dw9763_dev = i2c_get_clientdata(client);
|
|
|
|
remove_sysfs_interfaces(&client->dev);
|
|
mutex_destroy(&dw9763_dev->lock);
|
|
pm_runtime_disable(&client->dev);
|
|
dw9763_subdev_cleanup(dw9763_dev);
|
|
}
|
|
|
|
static int dw9763_init(struct i2c_client *client)
|
|
{
|
|
struct dw9763_device *dev_vcm = i2c_get_clientdata(client);
|
|
int ret = 0;
|
|
u32 mode_val = 0;
|
|
u32 algo_time = 0;
|
|
|
|
if (dev_vcm->step_mode == DIRECT_MODE)
|
|
return 0;
|
|
|
|
ret = dw9763_write_reg(client, 0x02, 1, 0x00);
|
|
if (ret)
|
|
goto err;
|
|
|
|
usleep_range(200, 300);
|
|
ret = dw9763_write_reg(client, 0x02, 1, 0x02);
|
|
if (ret)
|
|
goto err;
|
|
switch (dev_vcm->step_mode) {
|
|
case SAC1_MODE:
|
|
case SAC2_MODE:
|
|
case SAC2_5_MODE:
|
|
case SAC3_MODE:
|
|
case SAC4_MODE:
|
|
mode_val |= dev_vcm->step_mode << 5;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
mode_val |= (dev_vcm->t_div & 0x07);
|
|
algo_time = dev_vcm->t_src;
|
|
ret = dw9763_write_reg(client, 0x06, 1, mode_val);
|
|
if (ret)
|
|
goto err;
|
|
ret = dw9763_write_reg(client, 0x07, 1, algo_time);
|
|
if (ret)
|
|
goto err;
|
|
usleep_range(100, 200);
|
|
|
|
return 0;
|
|
err:
|
|
dev_err(&client->dev, "init failed with error %d\n", ret);
|
|
return -1;
|
|
}
|
|
|
|
static int __maybe_unused dw9763_vcm_suspend(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct dw9763_device *dev_vcm = i2c_get_clientdata(client);
|
|
struct v4l2_subdev *sd = &(dev_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
|
|
|
|
__dw9763_set_power(dev_vcm, false);
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused dw9763_vcm_resume(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct dw9763_device *dev_vcm = i2c_get_clientdata(client);
|
|
struct v4l2_subdev *sd = &(dev_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
|
|
__dw9763_set_power(dev_vcm, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id dw9763_id_table[] = {
|
|
{ DW9763_NAME, 0 },
|
|
{ { 0 } }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, dw9763_id_table);
|
|
|
|
static const struct of_device_id dw9763_of_table[] = {
|
|
{ .compatible = "dongwoon,dw9763" },
|
|
{ { 0 } }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, dw9763_of_table);
|
|
|
|
static const struct dev_pm_ops dw9763_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(dw9763_vcm_suspend, dw9763_vcm_resume)
|
|
SET_RUNTIME_PM_OPS(dw9763_vcm_suspend, dw9763_vcm_resume, NULL)
|
|
};
|
|
|
|
static struct i2c_driver dw9763_i2c_driver = {
|
|
.driver = {
|
|
.name = DW9763_NAME,
|
|
.pm = &dw9763_pm_ops,
|
|
.of_match_table = dw9763_of_table,
|
|
},
|
|
.probe = &dw9763_probe,
|
|
.remove = &dw9763_remove,
|
|
.id_table = dw9763_id_table,
|
|
};
|
|
|
|
module_i2c_driver(dw9763_i2c_driver);
|
|
|
|
MODULE_DESCRIPTION("DW9763 VCM driver");
|
|
MODULE_LICENSE("GPL");
|