^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) * HID Sensors Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2017, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/hid-sensor-hub.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/iio/buffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "hid-sensor-trigger.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) struct hid_humidity_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct hid_sensor_common common_attributes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct hid_sensor_hub_attribute_info humidity_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) s32 humidity_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) u64 timestamp __aligned(8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) } scan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) int scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) int scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) int value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* Channel definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static const struct iio_chan_spec humidity_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) .type = IIO_HUMIDITYRELATIVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) IIO_CHAN_SOFT_TIMESTAMP(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* Adjust channel real bits based on report descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static void humidity_adjust_channel_bit_mask(struct iio_chan_spec *channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int channel, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) channels[channel].scan_type.sign = 's';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Real storage bits will change based on the report desc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) channels[channel].scan_type.realbits = size * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Maximum size of a sample to capture is s32 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) channels[channel].scan_type.storagebits = sizeof(s32) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static int humidity_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct hid_humidity_state *humid_st = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (chan->type != IIO_HUMIDITYRELATIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) hid_sensor_power_state(&humid_st->common_attributes, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *val = sensor_hub_input_attr_get_raw_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) humid_st->common_attributes.hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) HID_USAGE_SENSOR_HUMIDITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) humid_st->humidity_attr.report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) SENSOR_HUB_SYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) humid_st->humidity_attr.logical_minimum < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) hid_sensor_power_state(&humid_st->common_attributes, false);
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) *val = humid_st->scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) *val2 = humid_st->scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return humid_st->scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) case IIO_CHAN_INFO_OFFSET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) *val = humid_st->value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return hid_sensor_read_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) &humid_st->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return hid_sensor_read_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) &humid_st->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static int humidity_write_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) int val, int val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct hid_humidity_state *humid_st = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return hid_sensor_write_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) &humid_st->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return hid_sensor_write_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) &humid_st->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return -EINVAL;
^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) static const struct iio_info humidity_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .read_raw = &humidity_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .write_raw = &humidity_write_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /* Callback handler to send event after all samples are received and captured */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static int humidity_proc_event(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) unsigned int usage_id, void *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct hid_humidity_state *humid_st = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (atomic_read(&humid_st->common_attributes.data_ready))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) iio_push_to_buffers_with_timestamp(indio_dev, &humid_st->scan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) iio_get_time_ns(indio_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /* Capture samples in local storage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static int humidity_capture_sample(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) unsigned int usage_id, size_t raw_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) char *raw_data, void *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct hid_humidity_state *humid_st = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) switch (usage_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) case HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) humid_st->scan.humidity_data = *(s32 *)raw_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /* Parse report which is specific to an usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static int humidity_parse_report(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct iio_chan_spec *channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) unsigned int usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) struct hid_humidity_state *st)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) &st->humidity_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) humidity_adjust_channel_bit_mask(channels, 0, st->humidity_attr.size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) st->scale_precision = hid_sensor_format_scale(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) HID_USAGE_SENSOR_HUMIDITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) &st->humidity_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) &st->scale_pre_decml,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) &st->scale_post_decml);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* Set Sensitivity field ids, when there is no individual modifier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (st->common_attributes.sensitivity.index < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) HID_FEATURE_REPORT, usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) &st->common_attributes.sensitivity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static struct hid_sensor_hub_callbacks humidity_callbacks = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .send_event = &humidity_proc_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) .capture_sample = &humidity_capture_sample,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /* Function to initialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static int hid_humidity_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static const char *name = "humidity";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct hid_humidity_state *humid_st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct iio_chan_spec *humid_chans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*humid_st));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) humid_st = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) humid_st->common_attributes.hsdev = hsdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) humid_st->common_attributes.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) ret = hid_sensor_parse_common_attributes(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) HID_USAGE_SENSOR_HUMIDITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) &humid_st->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) humid_chans = devm_kmemdup(&indio_dev->dev, humidity_channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) sizeof(humidity_channels), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (!humid_chans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret = humidity_parse_report(pdev, hsdev, humid_chans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) HID_USAGE_SENSOR_HUMIDITY, humid_st);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) indio_dev->channels = humid_chans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) indio_dev->num_channels = ARRAY_SIZE(humidity_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) indio_dev->info = &humidity_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) indio_dev->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) atomic_set(&humid_st->common_attributes.data_ready, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) ret = hid_sensor_setup_trigger(indio_dev, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) &humid_st->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) platform_set_drvdata(pdev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) humidity_callbacks.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_HUMIDITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) &humidity_callbacks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) goto error_remove_trigger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) goto error_remove_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) error_remove_callback:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_HUMIDITY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) error_remove_trigger:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) hid_sensor_remove_trigger(indio_dev, &humid_st->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* Function to deinitialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static int hid_humidity_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct hid_humidity_state *humid_st = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_HUMIDITY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) hid_sensor_remove_trigger(indio_dev, &humid_st->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static const struct platform_device_id hid_humidity_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) .name = "HID-SENSOR-200032",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) MODULE_DEVICE_TABLE(platform, hid_humidity_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static struct platform_driver hid_humidity_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) .id_table = hid_humidity_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) .pm = &hid_sensor_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) .probe = hid_humidity_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) .remove = hid_humidity_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) module_platform_driver(hid_humidity_platform_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) MODULE_DESCRIPTION("HID Environmental humidity sensor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) MODULE_AUTHOR("Song Hongyan <hongyan.song@intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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