^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) 2014, 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/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/hid-sensor-hub.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/iio/buffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "../common/hid-sensors/hid-sensor-trigger.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define CHANNEL_SCAN_INDEX_PRESSURE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct press_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct hid_sensor_hub_callbacks callbacks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct hid_sensor_common common_attributes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct hid_sensor_hub_attribute_info press_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) u32 press_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) int scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) int scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) int value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* Channel definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static const struct iio_chan_spec press_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) .type = IIO_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) .scan_index = CHANNEL_SCAN_INDEX_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* Adjust channel real bits based on report descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static void press_adjust_channel_bit_mask(struct iio_chan_spec *channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int channel, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) channels[channel].scan_type.sign = 's';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /* Real storage bits will change based on the report desc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) channels[channel].scan_type.realbits = size * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* Maximum size of a sample to capture is u32 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) channels[channel].scan_type.storagebits = sizeof(u32) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* Channel read_raw handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static int press_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) int *val, int *val2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct press_state *press_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int report_id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u32 address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int ret_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) s32 min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) *val2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) switch (chan->scan_index) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) case CHANNEL_SCAN_INDEX_PRESSURE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) report_id = press_state->press_attr.report_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) min = press_state->press_attr.logical_minimum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) address = HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) report_id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (report_id >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) hid_sensor_power_state(&press_state->common_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) *val = sensor_hub_input_attr_get_raw_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) press_state->common_attributes.hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) HID_USAGE_SENSOR_PRESSURE, address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) SENSOR_HUB_SYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) min < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) hid_sensor_power_state(&press_state->common_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) *val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ret_type = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) *val = press_state->scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *val2 = press_state->scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ret_type = press_state->scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) case IIO_CHAN_INFO_OFFSET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) *val = press_state->value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ret_type = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ret_type = hid_sensor_read_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) &press_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ret_type = hid_sensor_read_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) &press_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ret_type = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return ret_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* Channel write_raw handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static int press_write_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) int val2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct press_state *press_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) ret = hid_sensor_write_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) &press_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) ret = hid_sensor_write_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) &press_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ret = -EINVAL;
^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) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static const struct iio_info press_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .read_raw = &press_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .write_raw = &press_write_raw,
^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) /* Function to push data to buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) iio_push_to_buffers(indio_dev, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /* Callback handler to send event after all samples are received and captured */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int press_proc_event(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct iio_dev *indio_dev = platform_get_drvdata(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct press_state *press_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) dev_dbg(&indio_dev->dev, "press_proc_event\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (atomic_read(&press_state->common_attributes.data_ready))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) hid_sensor_push_data(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) &press_state->press_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) sizeof(press_state->press_data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return 0;
^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) /* Capture samples in local storage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static int press_capture_sample(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) size_t raw_len, char *raw_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct iio_dev *indio_dev = platform_get_drvdata(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) struct press_state *press_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) switch (usage_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) case HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) press_state->press_data = *(u32 *)raw_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /* Parse report which is specific to an usage id*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static int press_parse_report(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct iio_chan_spec *channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct press_state *st)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) &st->press_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) press_adjust_channel_bit_mask(channels, CHANNEL_SCAN_INDEX_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) st->press_attr.size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) dev_dbg(&pdev->dev, "press %x:%x\n", st->press_attr.index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) st->press_attr.report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) st->scale_precision = hid_sensor_format_scale(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) HID_USAGE_SENSOR_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) &st->press_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) &st->scale_pre_decml, &st->scale_post_decml);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /* Set Sensitivity field ids, when there is no individual modifier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (st->common_attributes.sensitivity.index < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) HID_FEATURE_REPORT, usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) HID_USAGE_SENSOR_DATA_ATMOSPHERIC_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) &st->common_attributes.sensitivity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) st->common_attributes.sensitivity.index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) st->common_attributes.sensitivity.report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /* Function to initialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int hid_press_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static const char *name = "press";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) struct press_state *press_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) indio_dev = devm_iio_device_alloc(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) sizeof(struct press_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) platform_set_drvdata(pdev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) press_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) press_state->common_attributes.hsdev = hsdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) press_state->common_attributes.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ret = hid_sensor_parse_common_attributes(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) HID_USAGE_SENSOR_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) &press_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) dev_err(&pdev->dev, "failed to setup common attributes\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) indio_dev->channels = kmemdup(press_channels, sizeof(press_channels),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (!indio_dev->channels) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) dev_err(&pdev->dev, "failed to duplicate channels\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ret = press_parse_report(pdev, hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) (struct iio_chan_spec *)indio_dev->channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) HID_USAGE_SENSOR_PRESSURE, press_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) dev_err(&pdev->dev, "failed to setup attributes\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) goto error_free_dev_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) indio_dev->num_channels =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ARRAY_SIZE(press_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) indio_dev->info = &press_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) indio_dev->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) atomic_set(&press_state->common_attributes.data_ready, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) ret = hid_sensor_setup_trigger(indio_dev, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) &press_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) dev_err(&pdev->dev, "trigger setup failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) goto error_free_dev_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) dev_err(&pdev->dev, "device register failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) goto error_remove_trigger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) press_state->callbacks.send_event = press_proc_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) press_state->callbacks.capture_sample = press_capture_sample;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) press_state->callbacks.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_PRESSURE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) &press_state->callbacks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) dev_err(&pdev->dev, "callback reg failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) goto error_iio_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) error_iio_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) error_remove_trigger:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) error_free_dev_mem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) kfree(indio_dev->channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) /* Function to deinitialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static int hid_press_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct press_state *press_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PRESSURE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) kfree(indio_dev->channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static const struct platform_device_id hid_press_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) .name = "HID-SENSOR-200031",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) MODULE_DEVICE_TABLE(platform, hid_press_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static struct platform_driver hid_press_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) .id_table = hid_press_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) .pm = &hid_sensor_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) .probe = hid_press_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) .remove = hid_press_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) module_platform_driver(hid_press_platform_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) MODULE_DESCRIPTION("HID Sensor Pressure");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) MODULE_AUTHOR("Archana Patni <archana.patni@intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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