2c60426639
Move driver to use gpio_dt_spec for GPIO interrupt handling. Signed-off-by: Kumar Gala <galak@kernel.org>
138 lines
3 KiB
C
138 lines
3 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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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 ti_tmp007
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#include <zephyr/device.h>
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#include <zephyr/drivers/i2c.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/sys/byteorder.h>
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#include <zephyr/sys/util.h>
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#include <zephyr/kernel.h>
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#include <zephyr/drivers/sensor.h>
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#include <zephyr/sys/__assert.h>
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#include <zephyr/logging/log.h>
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#include "tmp007.h"
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LOG_MODULE_REGISTER(TMP007, CONFIG_SENSOR_LOG_LEVEL);
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int tmp007_reg_read(const struct i2c_dt_spec *i2c, uint8_t reg, uint16_t *val)
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{
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if (i2c_burst_read_dt(i2c, reg, (uint8_t *) val, 2) < 0) {
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LOG_ERR("I2C read failed");
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return -EIO;
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}
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*val = sys_be16_to_cpu(*val);
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return 0;
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}
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int tmp007_reg_write(const struct i2c_dt_spec *i2c, uint8_t reg, uint16_t val)
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{
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uint8_t tx_buf[3] = {reg, val >> 8, val & 0xFF};
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return i2c_write_dt(i2c, tx_buf, sizeof(tx_buf));
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}
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int tmp007_reg_update(const struct i2c_dt_spec *i2c, uint8_t reg,
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uint16_t mask, uint16_t val)
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{
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uint16_t old_val = 0U;
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uint16_t new_val;
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if (tmp007_reg_read(i2c, reg, &old_val) < 0) {
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return -EIO;
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}
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new_val = old_val & ~mask;
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new_val |= val & mask;
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return tmp007_reg_write(i2c, reg, new_val);
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}
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static int tmp007_sample_fetch(const struct device *dev,
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enum sensor_channel chan)
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{
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struct tmp007_data *drv_data = dev->data;
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const struct tmp007_config *cfg = dev->config;
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uint16_t val;
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__ASSERT_NO_MSG(chan == SENSOR_CHAN_ALL || chan == SENSOR_CHAN_AMBIENT_TEMP);
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if (tmp007_reg_read(&cfg->i2c, TMP007_REG_TOBJ, &val) < 0) {
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return -EIO;
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}
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if (val & TMP007_DATA_INVALID_BIT) {
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return -EIO;
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}
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drv_data->sample = arithmetic_shift_right((int16_t)val, 2);
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return 0;
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}
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static int tmp007_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 tmp007_data *drv_data = dev->data;
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int32_t uval;
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if (chan != SENSOR_CHAN_AMBIENT_TEMP) {
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return -ENOTSUP;
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}
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uval = (int32_t)drv_data->sample * TMP007_TEMP_SCALE;
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val->val1 = uval / 1000000;
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val->val2 = uval % 1000000;
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return 0;
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}
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static const struct sensor_driver_api tmp007_driver_api = {
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#ifdef CONFIG_TMP007_TRIGGER
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.attr_set = tmp007_attr_set,
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.trigger_set = tmp007_trigger_set,
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#endif
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.sample_fetch = tmp007_sample_fetch,
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.channel_get = tmp007_channel_get,
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};
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int tmp007_init(const struct device *dev)
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{
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const struct tmp007_config *cfg = dev->config;
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if (!device_is_ready(cfg->i2c.bus)) {
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LOG_ERR("Bus device is not ready");
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return -ENODEV;
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}
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#ifdef CONFIG_TMP007_TRIGGER
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if (tmp007_init_interrupt(dev) < 0) {
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LOG_DBG("Failed to initialize interrupt!");
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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 const struct tmp007_config tmp007_config = {
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.i2c = I2C_DT_SPEC_INST_GET(0),
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#ifdef CONFIG_TMP007_TRIGGER
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.int_gpio = GPIO_DT_SPEC_INST_GET(0, int_gpios),
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#endif
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};
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struct tmp007_data tmp007_driver;
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DEVICE_DT_INST_DEFINE(0, tmp007_init, NULL,
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&tmp007_driver,
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&tmp007_config, POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY,
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&tmp007_driver_api);
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