530 lines
12 KiB
C
530 lines
12 KiB
C
/*
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* Copyright (c) 2017 Intel Corporation
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* Copyright (c) 2018 Phytec Messtechnik GmbH
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*
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*SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT avago_apds9960
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/* @file
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* @brief driver for APDS9960 ALS/RGB/gesture/proximity sensor
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*/
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#include <zephyr/device.h>
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#include <zephyr/drivers/sensor.h>
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#include <zephyr/drivers/i2c.h>
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#include <zephyr/pm/device.h>
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#include <zephyr/sys/__assert.h>
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#include <zephyr/sys/byteorder.h>
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#include <zephyr/init.h>
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#include <zephyr/kernel.h>
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#include <string.h>
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#include <zephyr/logging/log.h>
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#include "apds9960.h"
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LOG_MODULE_REGISTER(APDS9960, CONFIG_SENSOR_LOG_LEVEL);
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static void apds9960_handle_cb(struct apds9960_data *drv_data)
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{
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apds9960_setup_int(drv_data->dev->config, false);
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#ifdef CONFIG_APDS9960_TRIGGER
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k_work_submit(&drv_data->work);
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#else
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k_sem_give(&drv_data->data_sem);
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#endif
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}
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static void apds9960_gpio_callback(const struct device *dev,
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struct gpio_callback *cb, uint32_t pins)
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{
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struct apds9960_data *drv_data =
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CONTAINER_OF(cb, struct apds9960_data, gpio_cb);
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apds9960_handle_cb(drv_data);
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}
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static int apds9960_sample_fetch(const struct device *dev,
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enum sensor_channel chan)
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{
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const struct apds9960_config *config = dev->config;
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struct apds9960_data *data = dev->data;
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uint8_t tmp;
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if (chan != SENSOR_CHAN_ALL) {
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LOG_ERR("Unsupported sensor channel");
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return -ENOTSUP;
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}
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#ifndef CONFIG_APDS9960_TRIGGER
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apds9960_setup_int(config, true);
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#ifdef CONFIG_APDS9960_ENABLE_ALS
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tmp = APDS9960_ENABLE_PON | APDS9960_ENABLE_AIEN;
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#else
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tmp = APDS9960_ENABLE_PON | APDS9960_ENABLE_PIEN;
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#endif
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG, tmp, tmp)) {
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LOG_ERR("Power on bit not set.");
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return -EIO;
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}
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k_sem_take(&data->data_sem, K_FOREVER);
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#endif
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if (i2c_reg_read_byte_dt(&config->i2c,
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APDS9960_STATUS_REG, &tmp)) {
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return -EIO;
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}
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LOG_DBG("status: 0x%x", tmp);
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if (tmp & APDS9960_STATUS_PINT) {
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if (i2c_reg_read_byte_dt(&config->i2c,
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APDS9960_PDATA_REG, &data->pdata)) {
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return -EIO;
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}
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}
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if (tmp & APDS9960_STATUS_AINT) {
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if (i2c_burst_read_dt(&config->i2c,
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APDS9960_CDATAL_REG,
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(uint8_t *)&data->sample_crgb,
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sizeof(data->sample_crgb))) {
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return -EIO;
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}
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}
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#ifndef CONFIG_APDS9960_TRIGGER
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG,
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APDS9960_ENABLE_PON,
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0)) {
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return -EIO;
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}
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#endif
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_AICLEAR_REG, 0)) {
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return -EIO;
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}
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return 0;
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}
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static int apds9960_channel_get(const struct device *dev,
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enum sensor_channel chan,
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struct sensor_value *val)
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{
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struct apds9960_data *data = dev->data;
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switch (chan) {
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#ifdef CONFIG_APDS9960_ENABLE_ALS
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case SENSOR_CHAN_LIGHT:
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val->val1 = sys_le16_to_cpu(data->sample_crgb[0]);
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val->val2 = 0;
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break;
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case SENSOR_CHAN_RED:
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val->val1 = sys_le16_to_cpu(data->sample_crgb[1]);
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val->val2 = 0;
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break;
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case SENSOR_CHAN_GREEN:
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val->val1 = sys_le16_to_cpu(data->sample_crgb[2]);
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val->val2 = 0;
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break;
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case SENSOR_CHAN_BLUE:
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val->val1 = sys_le16_to_cpu(data->sample_crgb[3]);
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val->val2 = 0;
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break;
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#endif
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case SENSOR_CHAN_PROX:
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val->val1 = data->pdata;
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val->val2 = 0;
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break;
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default:
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return -ENOTSUP;
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}
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return 0;
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}
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static int apds9960_proxy_setup(const struct device *dev)
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{
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const struct apds9960_config *config = dev->config;
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_POFFSET_UR_REG,
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APDS9960_DEFAULT_POFFSET_UR)) {
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LOG_ERR("Default offset UR not set ");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_POFFSET_DL_REG,
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APDS9960_DEFAULT_POFFSET_DL)) {
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LOG_ERR("Default offset DL not set ");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_PPULSE_REG,
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config->ppcount)) {
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LOG_ERR("Default pulse count not set ");
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return -EIO;
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}
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_CONTROL_REG,
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APDS9960_CONTROL_LDRIVE,
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APDS9960_DEFAULT_LDRIVE)) {
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LOG_ERR("LED Drive Strength not set");
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return -EIO;
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}
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_CONFIG2_REG,
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APDS9960_PLED_BOOST_300,
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config->pled_boost)) {
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LOG_ERR("LED Drive Strength not set");
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return -EIO;
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}
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_CONTROL_REG, APDS9960_CONTROL_PGAIN,
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(config->pgain & APDS9960_PGAIN_8X))) {
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LOG_ERR("Gain is not set");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_PILT_REG, APDS9960_DEFAULT_PILT)) {
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LOG_ERR("Low threshold not set");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_PIHT_REG, APDS9960_DEFAULT_PIHT)) {
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LOG_ERR("High threshold not set");
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return -EIO;
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}
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG, APDS9960_ENABLE_PEN,
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APDS9960_ENABLE_PEN)) {
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LOG_ERR("Proximity mode is not enabled");
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return -EIO;
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}
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return 0;
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}
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#ifdef CONFIG_APDS9960_ENABLE_ALS
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static int apds9960_ambient_setup(const struct device *dev)
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{
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const struct apds9960_config *config = dev->config;
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uint16_t th;
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/* ADC value */
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_ATIME_REG, APDS9960_DEFAULT_ATIME)) {
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LOG_ERR("Default integration time not set for ADC");
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return -EIO;
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}
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/* ALS Gain */
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_CONTROL_REG,
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APDS9960_CONTROL_AGAIN,
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(config->again & APDS9960_AGAIN_64X))) {
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LOG_ERR("Ambient Gain is not set");
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return -EIO;
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}
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th = sys_cpu_to_le16(APDS9960_DEFAULT_AILT);
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if (i2c_burst_write_dt(&config->i2c,
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APDS9960_INT_AILTL_REG,
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(uint8_t *)&th, sizeof(th))) {
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LOG_ERR("ALS low threshold not set");
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return -EIO;
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}
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th = sys_cpu_to_le16(APDS9960_DEFAULT_AIHT);
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if (i2c_burst_write_dt(&config->i2c,
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APDS9960_INT_AIHTL_REG,
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(uint8_t *)&th, sizeof(th))) {
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LOG_ERR("ALS low threshold not set");
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return -EIO;
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}
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/* Enable ALS */
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG, APDS9960_ENABLE_AEN,
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APDS9960_ENABLE_AEN)) {
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LOG_ERR("ALS is not enabled");
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return -EIO;
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}
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return 0;
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}
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#endif
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static int apds9960_sensor_setup(const struct device *dev)
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{
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const struct apds9960_config *config = dev->config;
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uint8_t chip_id;
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if (i2c_reg_read_byte_dt(&config->i2c,
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APDS9960_ID_REG, &chip_id)) {
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LOG_ERR("Failed reading chip id");
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return -EIO;
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}
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if (!((chip_id == APDS9960_ID_1) || (chip_id == APDS9960_ID_2))) {
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LOG_ERR("Invalid chip id 0x%x", chip_id);
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return -EIO;
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}
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/* Disable all functions and interrupts */
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG, 0)) {
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LOG_ERR("ENABLE register is not cleared");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_AICLEAR_REG, 0)) {
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return -EIO;
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}
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/* Disable gesture interrupt */
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_GCONFIG4_REG, 0)) {
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LOG_ERR("GCONFIG4 register is not cleared");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_WTIME_REG, APDS9960_DEFAULT_WTIME)) {
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LOG_ERR("Default wait time not set");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_CONFIG1_REG,
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APDS9960_DEFAULT_CONFIG1)) {
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LOG_ERR("Default WLONG not set");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_CONFIG2_REG,
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APDS9960_DEFAULT_CONFIG2)) {
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LOG_ERR("Configuration Register Two not set");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_CONFIG3_REG,
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APDS9960_DEFAULT_CONFIG3)) {
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LOG_ERR("Configuration Register Three not set");
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return -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_PERS_REG,
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APDS9960_DEFAULT_PERS)) {
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LOG_ERR("Interrupt persistence not set");
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return -EIO;
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}
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if (apds9960_proxy_setup(dev)) {
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LOG_ERR("Failed to setup proximity functionality");
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return -EIO;
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}
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#ifdef CONFIG_APDS9960_ENABLE_ALS
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if (apds9960_ambient_setup(dev)) {
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LOG_ERR("Failed to setup ambient light functionality");
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return -EIO;
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}
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#endif
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return 0;
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}
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static int apds9960_init_interrupt(const struct device *dev)
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{
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const struct apds9960_config *config = dev->config;
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struct apds9960_data *drv_data = dev->data;
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if (!device_is_ready(config->int_gpio.port)) {
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LOG_ERR("%s: device %s is not ready", dev->name,
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config->int_gpio.port->name);
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return -ENODEV;
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}
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gpio_pin_configure_dt(&config->int_gpio, GPIO_INPUT | config->int_gpio.dt_flags);
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gpio_init_callback(&drv_data->gpio_cb,
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apds9960_gpio_callback,
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BIT(config->int_gpio.pin));
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if (gpio_add_callback(config->int_gpio.port, &drv_data->gpio_cb) < 0) {
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LOG_DBG("Failed to set gpio callback!");
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return -EIO;
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}
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drv_data->dev = dev;
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#ifdef CONFIG_APDS9960_TRIGGER
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drv_data->work.handler = apds9960_work_cb;
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG,
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APDS9960_ENABLE_PON,
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APDS9960_ENABLE_PON)) {
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LOG_ERR("Power on bit not set.");
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return -EIO;
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}
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#else
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k_sem_init(&drv_data->data_sem, 0, K_SEM_MAX_LIMIT);
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#endif
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apds9960_setup_int(config, true);
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if (gpio_pin_get_dt(&config->int_gpio) > 0) {
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apds9960_handle_cb(drv_data);
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}
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return 0;
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}
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#ifdef CONFIG_PM_DEVICE
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static int apds9960_pm_action(const struct device *dev,
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enum pm_device_action action)
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{
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const struct apds9960_config *config = dev->config;
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int ret = 0;
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switch (action) {
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case PM_DEVICE_ACTION_RESUME:
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG,
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APDS9960_ENABLE_PON,
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APDS9960_ENABLE_PON)) {
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ret = -EIO;
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}
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break;
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case PM_DEVICE_ACTION_SUSPEND:
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if (i2c_reg_update_byte_dt(&config->i2c,
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APDS9960_ENABLE_REG,
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APDS9960_ENABLE_PON, 0)) {
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ret = -EIO;
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}
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if (i2c_reg_write_byte_dt(&config->i2c,
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APDS9960_AICLEAR_REG, 0)) {
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ret = -EIO;
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}
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break;
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default:
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return -ENOTSUP;
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}
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return ret;
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}
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#endif
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static int apds9960_init(const struct device *dev)
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{
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const struct apds9960_config *config = dev->config;
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struct apds9960_data *data = dev->data;
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/* Initialize time 5.7ms */
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k_sleep(K_MSEC(6));
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if (!device_is_ready(config->i2c.bus)) {
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LOG_ERR("Bus device is not ready");
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return -EINVAL;
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}
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(void)memset(data->sample_crgb, 0, sizeof(data->sample_crgb));
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data->pdata = 0U;
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if (apds9960_sensor_setup(dev) < 0) {
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LOG_ERR("Failed to setup device!");
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return -EIO;
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}
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if (apds9960_init_interrupt(dev) < 0) {
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LOG_ERR("Failed to initialize interrupt!");
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return -EIO;
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}
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return 0;
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}
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static const struct sensor_driver_api apds9960_driver_api = {
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.sample_fetch = &apds9960_sample_fetch,
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.channel_get = &apds9960_channel_get,
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#ifdef CONFIG_APDS9960_TRIGGER
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.attr_set = apds9960_attr_set,
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.trigger_set = apds9960_trigger_set,
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#endif
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};
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static const struct apds9960_config apds9960_config = {
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.i2c = I2C_DT_SPEC_INST_GET(0),
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.int_gpio = GPIO_DT_SPEC_INST_GET(0, int_gpios),
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#if CONFIG_APDS9960_PGAIN_8X
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.pgain = APDS9960_PGAIN_8X,
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#elif CONFIG_APDS9960_PGAIN_4X
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.pgain = APDS9960_PGAIN_4X,
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#elif CONFIG_APDS9960_PGAIN_2X
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.pgain = APDS9960_PGAIN_2X,
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#else
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.pgain = APDS9960_PGAIN_1X,
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#endif
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#if CONFIG_APDS9960_AGAIN_64X
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.again = APDS9960_AGAIN_64X,
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#elif CONFIG_APDS9960_AGAIN_16X
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.again = APDS9960_AGAIN_16X,
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#elif CONFIG_APDS9960_AGAIN_4X
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.again = APDS9960_AGAIN_4X,
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#else
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.again = APDS9960_AGAIN_1X,
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#endif
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#if CONFIG_APDS9960_PPULSE_LENGTH_32US
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.ppcount = APDS9960_PPULSE_LENGTH_32US |
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(CONFIG_APDS9960_PPULSE_COUNT - 1),
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#elif CONFIG_APDS9960_PPULSE_LENGTH_16US
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.ppcount = APDS9960_PPULSE_LENGTH_16US |
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(CONFIG_APDS9960_PPULSE_COUNT - 1),
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#elif CONFIG_APDS9960_PPULSE_LENGTH_8US
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.ppcount = APDS9960_PPULSE_LENGTH_8US |
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(CONFIG_APDS9960_PPULSE_COUNT - 1),
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#else
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.ppcount = APDS9960_PPULSE_LENGTH_4US |
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(CONFIG_APDS9960_PPULSE_COUNT - 1),
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#endif
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#if CONFIG_APDS9960_PLED_BOOST_300PCT
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.pled_boost = APDS9960_PLED_BOOST_300,
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#elif CONFIG_APDS9960_PLED_BOOST_200PCT
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.pled_boost = APDS9960_PLED_BOOST_200,
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#elif CONFIG_APDS9960_PLED_BOOST_150PCT
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.pled_boost = APDS9960_PLED_BOOST_150,
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#else
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|
.pled_boost = APDS9960_PLED_BOOST_100,
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#endif
|
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};
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|
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static struct apds9960_data apds9960_data;
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|
|
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PM_DEVICE_DT_INST_DEFINE(0, apds9960_pm_action);
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|
|
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SENSOR_DEVICE_DT_INST_DEFINE(0, apds9960_init,
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PM_DEVICE_DT_INST_GET(0), &apds9960_data, &apds9960_config,
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POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY, &apds9960_driver_api);
|