/* drivers/input/sensors/access/kxtik.c
|
*
|
* Copyright (C) 2012-2015 ROCKCHIP.
|
* Author: luowei <lw@rock-chips.com>
|
*
|
* This software is licensed under the terms of the GNU General Public
|
* License version 2, as published by the Free Software Foundation, and
|
* may be copied, distributed, and modified under those terms.
|
*
|
* This program is distributed in the hope that it will be useful,
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
* GNU General Public License for more details.
|
*
|
*/
|
#include <linux/interrupt.h>
|
#include <linux/i2c.h>
|
#include <linux/slab.h>
|
#include <linux/irq.h>
|
#include <linux/miscdevice.h>
|
#include <linux/gpio.h>
|
#include <linux/uaccess.h>
|
#include <asm/atomic.h>
|
#include <linux/delay.h>
|
#include <linux/input.h>
|
#include <linux/workqueue.h>
|
#include <linux/freezer.h>
|
#include <linux/of_gpio.h>
|
#ifdef CONFIG_HAS_EARLYSUSPEND
|
#include <linux/earlysuspend.h>
|
#endif
|
#include <linux/sensor-dev.h>
|
|
|
#define ISL29023_REG_ADD_COMMAND1 0x00
|
#define COMMMAND1_OPMODE_SHIFT 5
|
#define COMMMAND1_OPMODE_MASK (7 << COMMMAND1_OPMODE_SHIFT)
|
#define COMMMAND1_OPMODE_POWER_DOWN (0 << COMMMAND1_OPMODE_SHIFT)
|
#define COMMMAND1_OPMODE_ALS_ONCE (1 << COMMMAND1_OPMODE_SHIFT)
|
#define COMMMAND1_OPMODE_IR_ONCE (2 << COMMMAND1_OPMODE_SHIFT)
|
#define COMMMAND1_OPMODE_ALS_CONTINUE (5 << COMMMAND1_OPMODE_SHIFT)
|
#define COMMMAND1_OPMODE_IR_CONTINUE (6 << COMMMAND1_OPMODE_SHIFT)
|
|
|
#define ISL29023_REG_ADD_COMMANDII 0x01
|
#define COMMANDII_RESOLUTION_SHIFT 2
|
#define COMMANDII_RESOLUTION_65536 (0x0 << COMMANDII_RESOLUTION_SHIFT)
|
#define COMMANDII_RESOLUTION_4096 (0x1 << COMMANDII_RESOLUTION_SHIFT)
|
#define COMMANDII_RESOLUTION_256 (0x2 << COMMANDII_RESOLUTION_SHIFT)
|
#define COMMANDII_RESOLUTION_16 (0x3 << COMMANDII_RESOLUTION_SHIFT)
|
#define COMMANDII_RESOLUTION_MASK (0x3 << COMMANDII_RESOLUTION_SHIFT)
|
|
#define COMMANDII_RANGE_SHIFT 0
|
#define COMMANDII_RANGE_1000 (0x0 << COMMANDII_RANGE_SHIFT)
|
#define COMMANDII_RANGE_4000 (0x1 << COMMANDII_RANGE_SHIFT)
|
#define COMMANDII_RANGE_16000 (0x2 << COMMANDII_RANGE_SHIFT)
|
#define COMMANDII_RANGE_64000 (0x3 << COMMANDII_RANGE_SHIFT)
|
#define COMMANDII_RANGE_MASK (0x3 << COMMANDII_RANGE_SHIFT)
|
|
|
#define COMMANDII_RANGE_MASK (0x3 << COMMANDII_RANGE_SHIFT)
|
|
#define COMMANDII_SCHEME_SHIFT 7
|
#define COMMANDII_SCHEME_MASK (0x1 << COMMANDII_SCHEME_SHIFT)
|
|
#define ISL29023_REG_ADD_DATA_LSB 0x02
|
#define ISL29023_REG_ADD_DATA_MSB 0x03
|
#define ISL29023_MAX_REGS ISL29023_REG_ADD_DATA_MSB
|
|
#define ISL29023_REG_LT_LSB 0x04
|
#define ISL29023_REG_LT_MSB 0x05
|
#define ISL29023_REG_HT_LSB 0x06
|
#define ISL29023_REG_HT_MSB 0x07
|
|
|
/****************operate according to sensor chip:start************/
|
|
static int sensor_active(struct i2c_client *client, int enable, int rate)
|
{
|
struct sensor_private_data *sensor =
|
(struct sensor_private_data *) i2c_get_clientdata(client);
|
int result = 0;
|
//int status = 0;
|
|
sensor->ops->ctrl_data = sensor_read_reg(client, sensor->ops->ctrl_reg);
|
|
//register setting according to chip datasheet
|
if(enable)
|
{
|
sensor->ops->ctrl_data &= 0x1f;
|
sensor->ops->ctrl_data |= COMMMAND1_OPMODE_ALS_CONTINUE;
|
}
|
else
|
{
|
sensor->ops->ctrl_data &= 0x1f;
|
//sensor->ops->ctrl_data |= COMMMAND1_OPMODE_POWER_DOWN;
|
}
|
|
DBG("%s:reg=0x%x,reg_ctrl=0x%x,enable=%d\n",__func__,sensor->ops->ctrl_reg, sensor->ops->ctrl_data, enable);
|
result = sensor_write_reg(client, sensor->ops->ctrl_reg, sensor->ops->ctrl_data);
|
if(result)
|
printk("%s:fail to active sensor\n",__func__);
|
|
if(enable)
|
sensor->ops->report(sensor->client);
|
|
return result;
|
|
}
|
|
|
static int sensor_init(struct i2c_client *client)
|
{
|
struct sensor_private_data *sensor =
|
(struct sensor_private_data *) i2c_get_clientdata(client);
|
int result = 0;
|
|
result = sensor->ops->active(client,0,0);
|
if(result)
|
{
|
printk("%s:line=%d,error\n",__func__,__LINE__);
|
return result;
|
}
|
|
sensor->status_cur = SENSOR_OFF;
|
|
result = sensor_write_reg(client, ISL29023_REG_ADD_COMMANDII, COMMANDII_RANGE_4000 | COMMANDII_RESOLUTION_4096);
|
if(result)
|
{
|
printk("%s:line=%d,error\n",__func__,__LINE__);
|
return result;
|
}
|
|
return result;
|
}
|
|
|
static int light_report_value(struct input_dev *input, int data)
|
{
|
unsigned char index = 0;
|
|
if(data <= 2){
|
index = 0;goto report;
|
}
|
else if(data <= 3){
|
index = 2;goto report;
|
}
|
else if(data <= 5){
|
index = 3;goto report;
|
}
|
else if(data <= 8){
|
index = 4;goto report;
|
}
|
else if(data <= 11){
|
index = 5;goto report;
|
}
|
else if(data <= 14){
|
index = 6;goto report;
|
}
|
else if(data <= 17){
|
index = 7;goto report;
|
}
|
else{
|
index = 7;goto report;
|
}
|
|
report:
|
input_report_abs(input, ABS_MISC, index);
|
input_sync(input);
|
|
return index;
|
}
|
|
|
static int sensor_report_value(struct i2c_client *client)
|
{
|
struct sensor_private_data *sensor =
|
(struct sensor_private_data *) i2c_get_clientdata(client);
|
int result = 0;
|
int value = 0;
|
char buffer[2] = {0};
|
char index = 0;
|
|
if(sensor->ops->read_len < 2) //sensor->ops->read_len = 2
|
{
|
printk("%s:lenth is error,len=%d\n",__func__,sensor->ops->read_len);
|
return -1;
|
}
|
|
memset(buffer, 0, 2);
|
|
buffer[0] = sensor->ops->read_reg;
|
result = sensor_rx_data(client, buffer, sensor->ops->read_len);
|
if(result)
|
{
|
printk("%s:line=%d,error\n",__func__,__LINE__);
|
return result;
|
}
|
|
value = (buffer[1] << 8) | buffer[0];
|
|
|
index = light_report_value(sensor->input_dev, value);
|
|
DBG("%s:%s result=0x%x,index=%d\n",__func__,sensor->ops->name, value,index);
|
|
if(sensor->pdata->irq_enable)
|
{
|
if(sensor->ops->int_status_reg)
|
{
|
value = sensor_read_reg(client, sensor->ops->int_status_reg);
|
}
|
|
}
|
|
|
return result;
|
}
|
|
static struct sensor_operate light_isl29023_ops = {
|
.name = "ls_isl29023",
|
.type = SENSOR_TYPE_LIGHT, //sensor type and it should be correct
|
.id_i2c = LIGHT_ID_ISL29023, //i2c id number
|
.read_reg = ISL29023_REG_ADD_DATA_LSB, //read data
|
.read_len = 2, //data length
|
.id_reg = SENSOR_UNKNOW_DATA, //read device id from this register
|
.id_data = SENSOR_UNKNOW_DATA, //device id
|
.precision = 16, //8 bits
|
.ctrl_reg = ISL29023_REG_ADD_COMMAND1, //enable or disable
|
.int_status_reg = ISL29023_REG_ADD_COMMAND1, //intterupt status register
|
.range = {100,65535}, //range
|
.brightness ={10,255}, //brightness
|
.trig = IRQF_TRIGGER_LOW | IRQF_ONESHOT,
|
.active = sensor_active,
|
.init = sensor_init,
|
.report = sensor_report_value,
|
};
|
|
/****************operate according to sensor chip:end************/
|
static int light_isl29023_probe(struct i2c_client *client,
|
const struct i2c_device_id *devid)
|
{
|
return sensor_register_device(client, NULL, devid, &light_isl29023_ops);
|
}
|
|
static int light_isl29023_remove(struct i2c_client *client)
|
{
|
return sensor_unregister_device(client, NULL, &light_isl29023_ops);
|
}
|
|
static const struct i2c_device_id light_isl29023_id[] = {
|
{"ls_isl29023", LIGHT_ID_ISL29023},
|
{}
|
};
|
|
static struct i2c_driver light_isl29023_driver = {
|
.probe = light_isl29023_probe,
|
.remove = light_isl29023_remove,
|
.shutdown = sensor_shutdown,
|
.id_table = light_isl29023_id,
|
.driver = {
|
.name = "light_isl29023",
|
#ifdef CONFIG_PM
|
.pm = &sensor_pm_ops,
|
#endif
|
},
|
};
|
|
module_i2c_driver(light_isl29023_driver);
|
|
MODULE_AUTHOR("luowei <lw@rock-chips.com>");
|
MODULE_DESCRIPTION("isl29023 light driver");
|
MODULE_LICENSE("GPL");
|
