/* SPDX-License-Identifier: GPL-2.0 */
#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>
#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif
#include <linux/sensor-dev.h>
#include <linux/types.h>
#define DRIVER_VERSION "1.0"
#define PWR_MODE_DOWN_MASK 0x80
#define PWR_MODE_OPERATE_MASK 0x7F
/*us5152 Slave Addr*/
#define LIGHT_ADDR 0x72
/*Interrupt PIN for S3C6410*/
#define IRQ_LIGHT_INT IRQ_EINT(6)
/*Register Set*/
#define REGS_CR0 0x00
#define REGS_CR1 0x01
#define REGS_CR2 0x02
#define REGS_CR3 0x03
//ALS
#define REGS_INT_LSB_TH_LO 0x04
#define REGS_INT_MSB_TH_LO 0x05
#define REGS_INT_LSB_TH_HI 0x06
#define REGS_INT_MSB_TH_HI 0x07
//ALS data
#define REGS_LBS_SENSOR 0x0C
#define REGS_MBS_SENSOR 0x0D
#define REGS_CR10 0x10
#define REGS_CR11 0x11
#define REGS_VERSION_ID 0x1F
#define REGS_CHIP_ID 0xB2
/*ShutDown_EN*/
#define CR0_OPERATION 0x0
#define CR0_SHUTDOWN_EN 0x1
#define CR0_SHUTDOWN_SHIFT (7)
#define CR0_SHUTDOWN_MASK (0x1 << CR0_SHUTDOWN_SHIFT)
/*OneShot_EN*/
#define CR0_ONESHOT_EN 0x01
#define CR0_ONESHOT_SHIFT (6)
#define CR0_ONESHOT_MASK (0x1 << CR0_ONESHOT_SHIFT)
/*Operation Mode*/
#define CR0_OPMODE_ALSANDPS 0x0
#define CR0_OPMODE_ALSONLY 0x1
#define CR0_OPMODE_IRONLY 0x2
#define CR0_OPMODE_SHIFT (4)
#define CR0_OPMODE_MASK (0x3 << CR0_OPMODE_SHIFT)
/*all int flag (PROX, INT_A, INT_P)*/
#define CR0_ALL_INT_CLEAR 0x0
#define CR0_ALL_INT_SHIFT (1)
#define CR0_ALL_INT_MASK (0x7 << CR0_ALL_INT_SHIFT)
/*indicator of object proximity detection*/
#define CR0_PROX_CLEAR 0x0
#define CR0_PROX_SHIFT (3)
#define CR0_PROX_MASK (0x1 << CR0_PROX_SHIFT)
/*interrupt status of proximity sensor*/
#define CR0_INTP_CLEAR 0x0
#define CR0_INTP_SHIFT (2)
#define CR0_INTP_MASK (0x1 << CR0_INTP_SHIFT)
/*interrupt status of ambient sensor*/
#define CR0_INTA_CLEAR 0x0
#define CR0_INTA_SHIFT (1)
#define CR0_INTA_MASK (0x1 << CR0_INTA_SHIFT)
/*Word mode enable*/
#define CR0_WORD_EN 0x1
#define CR0_WORD_SHIFT (0)
#define CR0_WORD_MASK (0x1 << CR0_WORD_SHIFT)
/*ALS fault queue depth for interrupt enent output*/
#define CR1_ALS_FQ_1 0x0
#define CR1_ALS_FQ_4 0x1
#define CR1_ALS_FQ_8 0x2
#define CR1_ALS_FQ_16 0x3
#define CR1_ALS_FQ_24 0x4
#define CR1_ALS_FQ_32 0x5
#define CR1_ALS_FQ_48 0x6
#define CR1_ALS_FQ_63 0x7
#define CR1_ALS_FQ_SHIFT (5)
#define CR1_ALS_FQ_MASK (0x7 << CR1_ALS_FQ_SHIFT)
/*resolution for ALS*/
#define CR1_ALS_RES_12BIT 0x0
#define CR1_ALS_RES_14BIT 0x1
#define CR1_ALS_RES_16BIT 0x2
#define CR1_ALS_RES_16BIT_2 0x3
#define CR1_ALS_RES_SHIFT (3)
#define CR1_ALS_RES_MASK (0x3 << CR1_ALS_RES_SHIFT)
/*sensing amplifier selection for ALS*/
#define CR1_ALS_GAIN_X1 0x0
#define CR1_ALS_GAIN_X2 0x1
#define CR1_ALS_GAIN_X4 0x2
#define CR1_ALS_GAIN_X8 0x3
#define CR1_ALS_GAIN_X16 0x4
#define CR1_ALS_GAIN_X32 0x5
#define CR1_ALS_GAIN_X64 0x6
#define CR1_ALS_GAIN_X128 0x7
#define CR1_ALS_GAIN_SHIFT (0)
#define CR1_ALS_GAIN_MASK (0x7 << CR1_ALS_GAIN_SHIFT)
/*PS fault queue depth for interrupt event output*/
#define CR2_PS_FQ_1 0x0
#define CR2_PS_FQ_4 0x1
#define CR2_PS_FQ_8 0x2
#define CR2_PS_FQ_15 0x3
#define CR2_PS_FQ_SHIFT (6)
#define CR2_PS_FQ_MASK (0x3 << CR2_PS_FQ_SHIFT)
/*interrupt type setting */
/*low active*/
#define CR2_INT_LEVEL 0x0
/*low pulse*/
#define CR2_INT_PULSE 0x1
#define CR2_INT_SHIFT (5)
#define CR2_INT_MASK (0x1 << CR2_INT_SHIFT)
/*resolution for PS*/
#define CR2_PS_RES_12 0x0
#define CR2_PS_RES_14 0x1
#define CR2_PS_RES_16 0x2
#define CR2_PS_RES_16_2 0x3
#define CR2_PS_RES_SHIFT (3)
#define CR2_PS_RES_MASK (0x3 << CR2_PS_RES_SHIFT)
/*sensing amplifier selection for PS*/
#define CR2_PS_GAIN_1 0x0
#define CR2_PS_GAIN_2 0x1
#define CR2_PS_GAIN_4 0x2
#define CR2_PS_GAIN_8 0x3
#define CR2_PS_GAIN_16 0x4
#define CR2_PS_GAIN_32 0x5
#define CR2_PS_GAIN_64 0x6
#define CR2_PS_GAIN_128 0x7
#define CR2_PS_GAIN_SHIFT (0)
#define CR2_PS_GAIN_MASK (0x7 << CR2_PS_GAIN_SHIFT)
/*wait-time slot selection*/
#define CR3_WAIT_SEL_0 0x0
#define CR3_WAIT_SEL_4 0x1
#define CR3_WAIT_SEL_8 0x2
#define CR3_WAIT_SEL_16 0x3
#define CR3_WAIT_SEL_SHIFT (6)
#define CR3_WAIT_SEL_MASK (0x3 << CR3_WAIT_SEL_SHIFT)
/*IR-LED drive peak current setting*/
#define CR3_LEDDR_12_5 0x0
#define CR3_LEDDR_25 0x1
#define CR3_LEDDR_50 0x2
#define CR3_LEDDR_100 0x3
#define CR3_LEDDR_SHIFT (4)
#define CR3_LEDDR_MASK (0x3 << CR3_LEDDR_SHIFT)
/*INT pin source selection*/
#define CR3_INT_SEL_BATH 0x0
#define CR3_INT_SEL_ALS 0x1
#define CR3_INT_SEL_PS 0x2
#define CR3_INT_SEL_PSAPP 0x3
#define CR3_INT_SEL_SHIFT (2)
#define CR3_INT_SEL_MASK (0x3 << CR3_INT_SEL_SHIFT)
/*software reset for register and core*/
#define CR3_SOFTRST_EN 0x1
#define CR3_SOFTRST_SHIFT (0)
#define CR3_SOFTRST_MASK (0x1 << CR3_SOFTRST_SHIFT)
/*modulation frequency of LED driver*/
#define CR10_FREQ_DIV2 0x0
#define CR10_FREQ_DIV4 0x1
#define CR10_FREQ_DIV8 0x2
#define CR10_FREQ_DIV16 0x3
#define CR10_FREQ_SHIFT (1)
#define CR10_FREQ_MASK (0x3 << CR10_FREQ_SHIFT)
/*50/60 Rejection enable*/
#define CR10_REJ_5060_DIS 0x00
#define CR10_REJ_5060_EN 0x01
#define CR10_REJ_5060_SHIFT (0)
#define CR10_REJ_5060_MASK (0x1 << CR10_REJ_5060_SHIFT)
#define us5152_NUM_CACHABLE_REGS 0x12
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;
char value = 0;
int i = 0;
for(i=0; i<3; i++)
{
if(!enable)
{
value = sensor_read_reg(client, REGS_CR0);
value |= PWR_MODE_DOWN_MASK; //ShutDown_EN=1
result = sensor_write_reg(client, REGS_CR0, value);
if(result)
return result;
}
else
{
value = sensor_read_reg(client, REGS_CR0);
value &= PWR_MODE_OPERATE_MASK ; //Operation_EN=0
result = sensor_write_reg(client, REGS_CR0, value);
if(result)
return result;
}
if(!result)
break;
}
if(i>1)
printk("%s:set %d times",__func__,i);
//TODO:? function to be added here
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;
char value = 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;
value = sensor_read_reg(client, REGS_CHIP_ID); //read chip ids
printk("us5152 chip id is %x!\n", value);
value = 0x01;//word accessing
result = sensor_write_reg(client, REGS_CR0, value);
if(result)
{
printk("%s:line=%d,error\n",__func__,__LINE__);
return result;
}
return result;
}
static int us5152_value_report(struct input_dev *input, int data)
{
unsigned char index = 0;
if(data <= 10){
index = 0;goto report;
}
else if(data <= 160){
index = 1;goto report;
}
else if(data <= 225){
index = 2;goto report;
}
else if(data <= 320){
index = 3;goto report;
}
else if(data <= 640){
index = 4;goto report;
}
else if(data <= 1280){
index = 5;goto report;
}
else if(data <= 2600){
index = 6;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 index = 0;
char buffer[2]= { 0 } ;
int ret=0;
if(sensor->pdata->irq_enable)
{
if(sensor->ops->int_status_reg >= 0)
{
value = sensor_read_reg(client, sensor->ops->int_status_reg);
}
}
//value = sensor_read_reg(client, sensor->ops->read_reg); //TODO:? to be changed
if(sensor->ops->read_len< 2) //12bit
{
printk("us5152 data read para num error ; len = %d\n ",sensor->ops->read_len);
return -1;
}
memset(buffer , 0 , 2);
do
{
*buffer = sensor->ops->read_reg;
ret=sensor_rx_data(client,buffer,sensor->ops->read_len);
if(ret<0)
return ret;
}
while(0);
value=buffer[1];
value =((value << 8) | buffer[0]) & 0xffff;
index = us5152_value_report(sensor->input_dev, value); //now is 12bit
//printk("%s:%s result=0x%x,index=%d\n",__func__,sensor->ops->name, value,index);
DBG("%s:%s result=%d,index=%d buffer[1]=0x%x , buffer[0]=0x%x \n",__func__,sensor->ops->name, value,index,buffer[1],buffer[0]);
return result;
}
static struct sensor_operate light_us5152_ops = {
.name = "ls_us5152",
.type = SENSOR_TYPE_LIGHT, //sensor type and it should be correct
.id_i2c = LIGHT_ID_US5152, //i2c id number
.read_reg = REGS_LBS_SENSOR, //read data
.read_len = 2, //data length
.id_reg = REGS_CHIP_ID, //read device id from this register
.id_data = 0x26, //device id
.precision = 12, //12 bits
.ctrl_reg = REGS_CR0, //enable or disable
.int_status_reg = SENSOR_UNKNOW_DATA, //intterupt status register
.range = {0,10}, //range
.brightness = {10,4095}, // 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_us5152_probe(struct i2c_client *client,
const struct i2c_device_id *devid)
{
return sensor_register_device(client, NULL, devid, &light_us5152_ops);
}
static int light_us5152_remove(struct i2c_client *client)
{
return sensor_unregister_device(client, NULL, &light_us5152_ops);
}
static const struct i2c_device_id light_us5152_id[] = {
{"ls_us5152", LIGHT_ID_US5152},
{}
};
static struct i2c_driver light_us5152_driver = {
.probe = light_us5152_probe,
.remove = light_us5152_remove,
.shutdown = sensor_shutdown,
.id_table = light_us5152_id,
.driver = {
.name = "light_us5152",
#ifdef CONFIG_PM
.pm = &sensor_pm_ops,
#endif
},
};
module_i2c_driver(light_us5152_driver);
MODULE_AUTHOR("Finley Huang finley_huang@upi-semi.com");
MODULE_DESCRIPTION("us5152 ambient light sensor driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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