^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * htu21.c - Support for Measurement-Specialties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * htu21 temperature & humidity sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * and humidity part of MS8607 sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (c) 2014 Measurement-Specialties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * (7-bit I2C slave address 0x40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Datasheet:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * http://www.meas-spec.com/downloads/HTU21D.pdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Datasheet:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * http://www.meas-spec.com/downloads/MS8607-02BA01.pdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "../common/ms_sensors/ms_sensors_i2c.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define HTU21_RESET 0xFE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) HTU21,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) MS8607
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static const int htu21_samp_freq[4] = { 20, 40, 70, 120 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* String copy of the above const for readability purpose */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static const char htu21_show_samp_freq[] = "20 40 70 120";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static int htu21_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct iio_chan_spec const *channel, int *val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int ret, temperature;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) unsigned int humidity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct ms_ht_dev *dev_data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) case IIO_CHAN_INFO_PROCESSED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) switch (channel->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) case IIO_TEMP: /* in milli °C */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ret = ms_sensors_ht_read_temperature(dev_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) &temperature);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) *val = temperature;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) case IIO_HUMIDITYRELATIVE: /* in milli %RH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) ret = ms_sensors_ht_read_humidity(dev_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) &humidity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *val = humidity;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) *val = htu21_samp_freq[dev_data->res_index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static int htu21_write_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) int val, int val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct ms_ht_dev *dev_data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) i = ARRAY_SIZE(htu21_samp_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) while (i-- > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (val == htu21_samp_freq[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (i < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) mutex_lock(&dev_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) dev_data->res_index = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) ret = ms_sensors_write_resolution(dev_data, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) mutex_unlock(&dev_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static const struct iio_chan_spec htu21_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .type = IIO_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .type = IIO_HUMIDITYRELATIVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * Meas Spec recommendation is to not read temperature
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * on this driver part for MS8607
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static const struct iio_chan_spec ms8607_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .type = IIO_HUMIDITYRELATIVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static ssize_t htu21_show_battery_low(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct iio_dev *indio_dev = dev_to_iio_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) struct ms_ht_dev *dev_data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return ms_sensors_show_battery_low(dev_data, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static ssize_t htu21_show_heater(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct iio_dev *indio_dev = dev_to_iio_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct ms_ht_dev *dev_data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return ms_sensors_show_heater(dev_data, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) static ssize_t htu21_write_heater(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct iio_dev *indio_dev = dev_to_iio_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct ms_ht_dev *dev_data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return ms_sensors_write_heater(dev_data, buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(htu21_show_samp_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static IIO_DEVICE_ATTR(battery_low, S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) htu21_show_battery_low, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static IIO_DEVICE_ATTR(heater_enable, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) htu21_show_heater, htu21_write_heater, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static struct attribute *htu21_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) &iio_const_attr_sampling_frequency_available.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) &iio_dev_attr_battery_low.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) &iio_dev_attr_heater_enable.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static const struct attribute_group htu21_attribute_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .attrs = htu21_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static const struct iio_info htu21_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) .read_raw = htu21_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .write_raw = htu21_write_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .attrs = &htu21_attribute_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static int htu21_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct ms_ht_dev *dev_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) u64 serial_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (!i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) I2C_FUNC_SMBUS_WRITE_BYTE_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) I2C_FUNC_SMBUS_WRITE_BYTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) "Adapter does not support some i2c transaction\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) dev_data = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) dev_data->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) dev_data->res_index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) mutex_init(&dev_data->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) indio_dev->info = &htu21_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) indio_dev->name = id->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (id->driver_data == MS8607) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) indio_dev->channels = ms8607_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) indio_dev->num_channels = ARRAY_SIZE(ms8607_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) indio_dev->channels = htu21_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) indio_dev->num_channels = ARRAY_SIZE(htu21_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) i2c_set_clientdata(client, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ret = ms_sensors_reset(client, HTU21_RESET, 15000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret = ms_sensors_read_serial(client, &serial_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) dev_info(&client->dev, "Serial number : %llx", serial_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) return devm_iio_device_register(&client->dev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static const struct i2c_device_id htu21_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) {"htu21", HTU21},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {"ms8607-humidity", MS8607},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) MODULE_DEVICE_TABLE(i2c, htu21_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static const struct of_device_id htu21_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) { .compatible = "meas,htu21", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) { .compatible = "meas,ms8607-humidity", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) MODULE_DEVICE_TABLE(of, htu21_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static struct i2c_driver htu21_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) .probe = htu21_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) .id_table = htu21_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) .name = "htu21",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) .of_match_table = htu21_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) module_i2c_driver(htu21_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) MODULE_DESCRIPTION("Measurement-Specialties htu21 temperature and humidity driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags