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Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards

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orangepi/linux-orangepi-5.10.y.git/trunk/drivers/input/sensors/lsensor/ls_stk3332.c
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// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2021 Rockchip Electronics Co. Ltd.
 *
 * Author: Kay Guo <kay.guo@rock-chips.com>
 */
#include <linux/atomic.h>
#include <linux/delay.h>
#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif
#include <linux/freezer.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/miscdevice.h>
#include <linux/of_gpio.h>
#include <linux/sensor-dev.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/workqueue.h>
 
#define	STK_STATE	0x00
#define	PS_CTRL		0x01
#define	ALS_CTRL1	0x02
#define	LED_CTRL	0x03
#define	INT_CTRL1	0x04
#define	STK_WAIT	0x05
#define	THDH1_PS	0x06
#define	THDH2_PS	0x07
#define	THDL1_PS	0x08
#define	THDL2_PS	0x09
#define	THDH1_ALS	0x0A
#define	THDH2_ALS	0x0B
#define	THDL1_ALS	0x0C
#define	THDL2_ALS	0x0D
#define	STK_FLAG	0x10
#define	DATA1_PS	0x11
#define	DATA2_PS	0x12
#define	DATA1_ALS	0x13
#define	DATA2_ALS	0x14
#define DATA1_C         0x1B
#define DATA2_C         0x1C
#define DATA1_PS_OFFSET 0x1D
#define DATA2_PS_OFFSET 0x1E
#define DATA_CTRL1      0x20
#define DATA_CTRL2      0x21
#define DATA_CTRL3      0x22
#define DATA_CTRL4      0x23
#define	STKPDT_ID	0x3E
#define STK_RESERVED    0x3F
#define ALS_CTRL2       0x4E
#define INTELLI_WAIT    0x4F
#define	SOFT_RESET	0x80
#define PSPD_CTRL       0xA1
#define INT_CTRL2       0xA5
 
/* STK_STATE	0x00 */
#define	PS_DISABLE	(0 << 0)
#define	PS_ENABLE	(1 << 0)
#define	ALS_DISABLE	(0 << 1)
#define	ALS_ENABLE	(1 << 1)
#define	WAIT_DISABLE	(0 << 2)
#define	WAIT_ENABLE	(1 << 2)
#define INTELLI_DISABLE (0 << 3)
#define INTELLI_ENABLE  (1 << 3)
#define	CTAUTOK_DISABLE	(0 << 4)
#define	CTAUTOK_ENABLE	(1 << 4)
 
/* PS/GS_CTRL 0x01 */
#define PS_IT_96US      (0 << 0)
#define PS_IT_192US     (1 << 0)
#define PS_IT_384US     (2 << 0)
#define PS_IT_768US     (3 << 0)
#define PS_IT_1MS54     (4 << 0)
#define PS_IT_3MS07     (5 << 0)
#define PS_IT_6MS14     (6 << 0)
 
#define	PS_GAIN_1G	(0 << 4)
#define	PS_GAIN_2G	(1 << 4)
#define	PS_GAIN_4G	(2 << 4)
#define	PS_GAIN_8G	(3 << 4)
#define	PS_PRST_1T	(0 << 6)
#define	PS_PRST_2T	(1 << 6)
#define	PS_PRST_4T	(2 << 6)
#define	PS_PRST_16T	(3 << 6)
 
/* ALS_CTRL1 0x02 */
#define	ALS_REFT_MS	(1 << 0)/* [3:0] 25 ms,  default value is 50ms */
#define	ALS_GAIN_1G	(0 << 4)
#define	ALS_GAIN_4G	(1 << 4)
#define	ALS_GAIN_16G	(2 << 4)
#define	ALS_GAIN_64G	(3 << 4)
#define	ALS_PRST_1T	(0 << 6)
#define	ALS_PRST_2T	(1 << 6)
#define	ALS_PRST_4T	(2 << 6)
#define	ALS_PRST_8T	(3 << 6)
 
/* LED_CTRL 0x03 */
#define	LED_REFT_US	0x03	/* [5:0] 2.89us ,  default value is 0.185ms */
#define CTIR_DISABLE    (0 << 0)
#define CTIR_ENABLE     (1 << 0)
#define CTIRFC_DISABLE  (0 << 1)
#define CTIRFC_ENABLE   (1 << 1)
#define	LED_CUR_12MA	(2 << 5)
#define	LED_CUR_25MA	(3 << 5)
#define	LED_CUR_50MA	(4 << 5)
#define	LED_CUR_100MA	(5 << 5)
#define	LED_CUR_150MA	(6 << 5)
 
/* INT 0x04 */
#define	PS_INT_DISABLE		(0 << 0)
#define	PS_INT_ENABLE		(1 << 0)
#define	PS_INT_ENABLE_FLGNFH	(2 << 0)
#define	PS_INT_ENABLE_FLGNFL	(3 << 0)
#define	PS_INT_MODE_ENABLE	(4 << 0)
#define	PS_INT_ENABLE_THL	(5 << 0)
#define	PS_INT_ENABLE_THH	(6 << 0)
#define	PS_INT_ENABLE_THHL	(7 << 0)
#define	ALS_INT_DISABLE		(0 << 3)
#define	ALS_INT_ENABLE		(1 << 3)
#define	INT_CTRL_PS_OR_LS	(0 << 7)
#define	INT_CTRL_PS_AND_LS	(1 << 7)
 
/* FLAG 0x10 */
#define	STK_FLAG_NF	        (1 << 0)
#define	STK_FLAG_INPS_INT	(1 << 1)
#define	STK_FLAG_ALS_STATE	(1 << 2)
#define	STK_FLAG_PS_INT		(1 << 4)
#define	STK_FLAG_ALS_INT	(1 << 5)
#define	STK_FLAG_PSDR           (1 << 6)
#define	STK_FLAG_ALSDR          (1 << 7)
 
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);
<------>if (!enable) {
<------><------>status = ~ALS_ENABLE;
<------><------>sensor->ops->ctrl_data &= status;
<------>} else {
<------><------>status |= ALS_ENABLE;
<------><------>sensor->ops->ctrl_data |= status;
<------>}
 
<------>dev_dbg(&client->dev, "reg=0x%x, reg_ctrl=0x%x, enable=%d\n",
<------><------>sensor->ops->ctrl_reg, sensor->ops->ctrl_data, enable);
 
<------>result = sensor_write_reg(client, sensor->ops->ctrl_reg,
<------><------><------><------>  sensor->ops->ctrl_data);
<------>if (result)
<------><------>dev_err(&client->dev, "%s:fail to active sensor\n", __func__);
 
<------>return result;
}
 
static int sensor_init(struct i2c_client *client)
{
<------>struct sensor_private_data *sensor =
<------><------>(struct sensor_private_data *)i2c_get_clientdata(client);
<------>struct device_node *np = client->dev.of_node;
<------>int als_val = 0;
<------>int val = 0;
<------>int ret = 0;
 
<------>ret = sensor->ops->active(client, 0, 0);
<------>if (ret) {
<------><------>dev_err(&client->dev, "%s:sensor active fail\n", __func__);
<------><------>return ret;
<------>}
<------>sensor->status_cur = SENSOR_OFF;
 
<------>ret = of_property_read_u32(np, "als_threshold_low", &als_val);
<------>if (ret)
<------><------>dev_err(&client->dev, "%s:Unable to read als_threshold_low\n",
<------><------><------>__func__);
<------>ret = sensor_write_reg(client, THDL1_ALS,
<------><------><------>       (unsigned char)(als_val >> 8));
<------>if (ret) {
<------><------>dev_err(&client->dev, "%s:write THDL1_ALS fail\n", __func__);
<------><------>return ret;
<------>}
 
<------>ret = sensor_write_reg(client, THDL2_ALS, (unsigned char)als_val);
<------>if (ret) {
<------><------>dev_err(&client->dev, "%s:write THDL1_ALS fail\n", __func__);
<------><------>return ret;
<------>}
 
<------>ret = of_property_read_u32(np, "als_threshold_high", &als_val);
<------>if (ret)
<------><------>dev_err(&client->dev, "%s:Unable to read als_threshold_high\n",
<------><------><------>__func__);
 
<------>ret = sensor_write_reg(client, THDH1_ALS,
<------><------><------>       (unsigned char)(als_val >> 8));
<------>if (ret) {
<------><------>dev_err(&client->dev, "%s:write THDH1_ALS fail\n", __func__);
<------><------>return ret;
<------>}
 
<------>ret = sensor_write_reg(client, THDH2_ALS, (unsigned char)als_val);
<------>if (ret) {
<------><------>dev_err(&client->dev, "%s:write THDH1_ALS fail\n", __func__);
<------><------>return ret;
<------>}
 
<------>ret = of_property_read_u32(np, "als_ctrl_gain", &als_val);
<------>if (ret)
<------><------>dev_err(&client->dev, "%s:Unable to read als_ctrl_gain\n",
<------><------><------>__func__);
 
<------>ret = sensor_write_reg(client, ALS_CTRL1,
<------><------><------>       (unsigned char)((als_val << 4) | ALS_REFT_MS));
<------>if (ret) {
<------><------>dev_err(&client->dev, "%s:write ALS_CTRL fail\n", __func__);
<------><------>return ret;
<------>}
 
<------>val = sensor_read_reg(client, INT_CTRL1);
<------>val &= ~INT_CTRL_PS_AND_LS;
<------>if (sensor->pdata->irq_enable)
<------><------>val |= ALS_INT_ENABLE;
<------>else
<------><------>val &= ~ALS_INT_ENABLE;
<------>ret = sensor_write_reg(client, INT_CTRL1, val);
<------>if (ret) {
<------><------>dev_err(&client->dev, "%s:write INT_CTRL1 fail\n", __func__);
<------><------>return ret;
<------>}
 
<------>return ret;
}
 
static int light_report_value(struct input_dev *input, int data)
{
<------>unsigned char index = 0;
 
<------>if (data <= 100) {
<------><------>index = 0;
<------><------>goto report;
<------>} else if (data <= 1600) {
<------><------>index = 1;
<------><------>goto report;
<------>} else if (data <= 2250) {
<------><------>index = 2;
<------><------>goto report;
<------>} else if (data <= 3200) {
<------><------>index = 3;
<------><------>goto report;
<------>} else if (data <= 6400) {
<------><------>index = 4;
<------><------>goto report;
<------>} else if (data <= 12800) {
<------><------>index = 5;
<------><------>goto report;
<------>} else if (data <= 26000) {
<------><------>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;
<------>int index = 0;
<------>char buffer[2] = { 0 };
 
<------>if (sensor->ops->read_len < 2) {
<------><------>dev_err(&client->dev, "%s:length is error, len=%d\n", __func__,
<------><------><------>sensor->ops->read_len);
<------><------>return -EINVAL;
<------>}
 
<------>buffer[0] = sensor->ops->read_reg;
<------>result = sensor_rx_data(client, buffer, sensor->ops->read_len);
<------>if (result) {
<------><------>dev_err(&client->dev, "%s:sensor read data fail\n", __func__);
<------><------>return result;
<------>}
<------>value = (buffer[0] << 8) | buffer[1];
<------>index = light_report_value(sensor->input_dev, value);
<------>dev_dbg(&client->dev, "%s result=0x%x, index=%d\n",
<------><------>sensor->ops->name, value, index);
 
<------>if (sensor->pdata->irq_enable && sensor->ops->int_status_reg) {
<------><------>value = sensor_read_reg(client, sensor->ops->int_status_reg);
<------><------>if (value & STK_FLAG_ALS_INT) {
<------><------><------>value &= ~STK_FLAG_ALS_INT;
<------><------><------>result = sensor_write_reg(client,
<------><------><------><------><------><------>  sensor->ops->int_status_reg,
<------><------><------><------><------><------>  value);
<------><------><------>if (result) {
<------><------><------><------>dev_err(&client->dev, "write status reg error\n");
<------><------><------><------>return result;
<------><------><------>}
<------><------>}
<------>}
 
<------>return result;
}
 
static struct sensor_operate light_stk3332_ops = {
<------>.name			= "ls_stk3332",
<------>.type			= SENSOR_TYPE_LIGHT,
<------>.id_i2c			= LIGHT_ID_STK3332,
<------>.read_reg		= DATA1_ALS,
<------>.read_len		= 2,
<------>.id_reg			= SENSOR_UNKNOW_DATA,
<------>.id_data		= SENSOR_UNKNOW_DATA,
<------>.precision		= 16,
<------>.ctrl_reg		= STK_STATE,
<------>.int_status_reg         = STK_FLAG,
<------>.range			= { 100, 65535 },
<------>.brightness		= { 10, 255 },
<------>.trig			= IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED,
<------>.active			= sensor_active,
<------>.init			= sensor_init,
<------>.report			= sensor_report_value,
};
 
static int light_stk3332_probe(struct i2c_client *client,
<------><------><------>       const struct i2c_device_id *devid)
{
<------>return sensor_register_device(client, NULL, devid, &light_stk3332_ops);
}
 
static int light_stk3332_remove(struct i2c_client *client)
{
<------>return sensor_unregister_device(client, NULL, &light_stk3332_ops);
}
 
static const struct i2c_device_id light_stk3332_id[] = {
<------>{ "ls_stk3332", LIGHT_ID_STK3332 },
<------>{}
};
 
static struct i2c_driver light_stk3332_driver = {
<------>.probe = light_stk3332_probe,
<------>.remove = light_stk3332_remove,
<------>.shutdown = sensor_shutdown,
<------>.id_table = light_stk3332_id,
<------>.driver = {
<------><------>.name = "light_stk3332",
#ifdef CONFIG_PM
<------><------>.pm = &sensor_pm_ops,
#endif
<------>},
};
 
module_i2c_driver(light_stk3332_driver);
 
MODULE_AUTHOR("Kay Guo <kay.guo@rock-chips.com>");
MODULE_DESCRIPTION("stk3332 light driver");
MODULE_LICENSE("GPL");
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