111 lines
2.4 KiB
C
111 lines
2.4 KiB
C
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/*
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* Copyright (c) 2020 Peter Johanson
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*
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* SPDX-License-Identifier: MIT
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*/
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#define DT_DRV_COMPAT alps_en11
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#include <device.h>
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#include <drivers/gpio.h>
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#include <sys/util.h>
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#include <kernel.h>
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#include <drivers/sensor.h>
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#include <sys/__assert.h>
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#include <logging/log.h>
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#include "en11.h"
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LOG_MODULE_REGISTER(EN11, CONFIG_SENSOR_LOG_LEVEL);
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static int en11_sample_fetch(struct device *dev, enum sensor_channel chan)
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{
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struct en11_data *drv_data = dev->driver_data;
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u16_t val;
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__ASSERT_NO_MSG(chan == SENSOR_CHAN_ALL || chan == SENSOR_CHAN_AMBIENT_TEMP);
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// if (en11_reg_read(drv_data, EN11_REG_TOBJ, &val) < 0) {
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// return -EIO;
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// }
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// if (val & EN11_DATA_INVALID_BIT) {
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// return -EIO;
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// }
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// drv_data->sample = arithmetic_shift_right((s16_t)val, 2);
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return 0;
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}
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static int en11_channel_get(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 en11_data *drv_data = dev->driver_data;
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// s32_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 = (s32_t)drv_data->sample * EN11_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 en11_driver_api = {
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#ifdef CONFIG_EN11_TRIGGER
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.trigger_set = en11_trigger_set,
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#endif
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.sample_fetch = en11_sample_fetch,
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.channel_get = en11_channel_get,
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};
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int en11_init(struct device *dev)
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{
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struct en11_data *drv_data = dev->driver_data;
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const struct en11_config *drv_cfg = dev->config_info;
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LOG_DBG("");
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drv_data->a = device_get_binding(drv_cfg->a_label);
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if (drv_data->a == NULL) {
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LOG_ERR("Failed to get pointer to A GPIO device");
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return -EINVAL;
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}
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drv_data->b = device_get_binding(drv_cfg->b_label);
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if (drv_data->b == NULL) {
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LOG_ERR("Failed to get pointer to B GPIO device");
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return -EINVAL;
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}
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#ifdef CONFIG_EN11_TRIGGER
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if (en11_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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struct en11_data en11_data;
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const struct en11_config en11_cfg = {
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.a_label = DT_INST_GPIO_LABEL(0, a_gpios),
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.a_pin = DT_INST_GPIO_PIN(0, a_gpios),
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.a_flags = DT_INST_GPIO_FLAGS(0, a_gpios),
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.b_label = DT_INST_GPIO_LABEL(0, b_gpios),
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.b_pin = DT_INST_GPIO_PIN(0, b_gpios),
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.b_flags = DT_INST_GPIO_FLAGS(0, b_gpios),
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};
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DEVICE_AND_API_INIT(en11, DT_INST_LABEL(0), en11_init,
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&en11_data,
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&en11_cfg, POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY,
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&en11_driver_api);
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