/*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT ti_tmp007
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/sys/util.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/sensor.h>
#include "tmp007.h"
extern struct tmp007_data tmp007_driver;
#include <zephyr/logging/log.h>
LOG_MODULE_DECLARE(TMP007, CONFIG_SENSOR_LOG_LEVEL);
static inline void setup_int(const struct device *dev,
bool enable)
{
const struct tmp007_config *cfg = dev->config;
gpio_pin_interrupt_configure_dt(&cfg->int_gpio,
enable
? GPIO_INT_LEVEL_ACTIVE
: GPIO_INT_DISABLE);
}
int tmp007_attr_set(const struct device *dev,
enum sensor_channel chan,
enum sensor_attribute attr,
const struct sensor_value *val)
{
const struct tmp007_config *cfg = dev->config;
int64_t value;
uint8_t reg;
if (!cfg->int_gpio.port) {
return -ENOTSUP;
}
if (chan != SENSOR_CHAN_AMBIENT_TEMP) {
return -ENOTSUP;
}
if (attr == SENSOR_ATTR_UPPER_THRESH) {
reg = TMP007_REG_TOBJ_TH_HIGH;
} else if (attr == SENSOR_ATTR_LOWER_THRESH) {
reg = TMP007_REG_TOBJ_TH_LOW;
} else {
return -ENOTSUP;
}
value = (int64_t)val->val1 * 1000000 + val->val2;
value = (value / TMP007_TEMP_TH_SCALE) << 6;
if (tmp007_reg_write(&cfg->i2c, reg, value) < 0) {
LOG_DBG("Failed to set attribute!");
return -EIO;
}
return 0;
}
static void tmp007_gpio_callback(const struct device *dev,
struct gpio_callback *cb, uint32_t pins)
{
struct tmp007_data *drv_data =
CONTAINER_OF(cb, struct tmp007_data, gpio_cb);
setup_int(drv_data->dev, false);
#if defined(CONFIG_TMP007_TRIGGER_OWN_THREAD)
k_sem_give(&drv_data->gpio_sem);
#elif defined(CONFIG_TMP007_TRIGGER_GLOBAL_THREAD)
k_work_submit(&drv_data->work);
#endif
}
static void tmp007_thread_cb(const struct device *dev)
{
struct tmp007_data *drv_data = dev->data;
const struct tmp007_config *cfg = dev->config;
uint16_t status;
if (tmp007_reg_read(&cfg->i2c, TMP007_REG_STATUS, &status) < 0) {
return;
}
if (status & TMP007_DATA_READY_INT_BIT &&
drv_data->drdy_handler != NULL) {
drv_data->drdy_handler(dev, &drv_data->drdy_trigger);
}
if (status & TMP007_TOBJ_TH_INT_BITS &&
drv_data->th_handler != NULL) {
drv_data->th_handler(dev, &drv_data->th_trigger);
}
setup_int(dev, true);
}
#ifdef CONFIG_TMP007_TRIGGER_OWN_THREAD
static void tmp007_thread(struct tmp007_data *drv_data)
{
while (1) {
k_sem_take(&drv_data->gpio_sem, K_FOREVER);
tmp007_thread_cb(drv_data->dev);
}
}
#endif
#ifdef CONFIG_TMP007_TRIGGER_GLOBAL_THREAD
static void tmp007_work_cb(struct k_work *work)
{
struct tmp007_data *drv_data =
CONTAINER_OF(work, struct tmp007_data, work);
tmp007_thread_cb(drv_data->dev);
}
#endif
int tmp007_trigger_set(const struct device *dev,
const struct sensor_trigger *trig,
sensor_trigger_handler_t handler)
{
struct tmp007_data *drv_data = dev->data;
const struct tmp007_config *cfg = dev->config;
if (!cfg->int_gpio.port) {
return -ENOTSUP;
}
setup_int(dev, false);
if (trig->type == SENSOR_TRIG_DATA_READY) {
drv_data->drdy_handler = handler;
drv_data->drdy_trigger = *trig;
} else if (trig->type == SENSOR_TRIG_THRESHOLD) {
drv_data->th_handler = handler;
drv_data->th_trigger = *trig;
}
setup_int(dev, true);
return 0;
}
int tmp007_init_interrupt(const struct device *dev)
{
struct tmp007_data *drv_data = dev->data;
const struct tmp007_config *cfg = dev->config;
if (tmp007_reg_update(&cfg->i2c, TMP007_REG_CONFIG,
TMP007_ALERT_EN_BIT, TMP007_ALERT_EN_BIT) < 0) {
LOG_DBG("Failed to enable interrupt pin!");
return -EIO;
}
drv_data->dev = dev;
if (!device_is_ready(cfg->int_gpio.port)) {
LOG_ERR("%s: device %s is not ready", dev->name,
cfg->int_gpio.port->name);
return -ENODEV;
}
gpio_pin_configure_dt(&cfg->int_gpio, GPIO_INT_LEVEL_ACTIVE);
gpio_init_callback(&drv_data->gpio_cb,
tmp007_gpio_callback,
BIT(cfg->int_gpio.pin));
if (gpio_add_callback(cfg->int_gpio.port, &drv_data->gpio_cb) < 0) {
LOG_DBG("Failed to set gpio callback!");
return -EIO;
}
#if defined(CONFIG_TMP007_TRIGGER_OWN_THREAD)
k_sem_init(&drv_data->gpio_sem, 0, K_SEM_MAX_LIMIT);
k_thread_create(&drv_data->thread, drv_data->thread_stack,
CONFIG_TMP007_THREAD_STACK_SIZE,
(k_thread_entry_t)tmp007_thread, drv_data,
NULL, NULL, K_PRIO_COOP(CONFIG_TMP007_THREAD_PRIORITY),
0, K_NO_WAIT);
#elif defined(CONFIG_TMP007_TRIGGER_GLOBAL_THREAD)
drv_data->work.handler = tmp007_work_cb;
#endif
return 0;
}