^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) 2012, 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) enum magn_3d_channel {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) CHANNEL_SCAN_INDEX_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) CHANNEL_SCAN_INDEX_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) CHANNEL_SCAN_INDEX_Z,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) CHANNEL_SCAN_INDEX_NORTH_TRUE_TILT_COMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) CHANNEL_SCAN_INDEX_NORTH_MAGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) CHANNEL_SCAN_INDEX_NORTH_TRUE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MAGN_3D_CHANNEL_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct common_attributes {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) int scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct magn_3d_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct hid_sensor_hub_callbacks callbacks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct hid_sensor_common magn_flux_attributes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct hid_sensor_common rot_attributes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct hid_sensor_hub_attribute_info magn[MAGN_3D_CHANNEL_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* dynamically sized array to hold sensor values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u32 *iio_vals;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* array of pointers to sensor value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u32 *magn_val_addr[MAGN_3D_CHANNEL_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct common_attributes magn_flux_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct common_attributes rot_attr;
^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 const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) HID_USAGE_SENSOR_ORIENT_MAGN_NORTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) HID_USAGE_SENSOR_ORIENT_TRUE_NORTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* Channel definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static const struct iio_chan_spec magn_3d_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) .type = IIO_MAGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .channel2 = IIO_MOD_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .type = IIO_MAGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .channel2 = IIO_MOD_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .type = IIO_MAGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .channel2 = IIO_MOD_Z,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .type = IIO_ROT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .channel2 = IIO_MOD_NORTH_MAGN_TILT_COMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) .type = IIO_ROT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) .channel2 = IIO_MOD_NORTH_TRUE_TILT_COMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .type = IIO_ROT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .channel2 = IIO_MOD_NORTH_MAGN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .type = IIO_ROT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .channel2 = IIO_MOD_NORTH_TRUE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) BIT(IIO_CHAN_INFO_HYSTERESIS),
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /* Adjust channel real bits based on report descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static void magn_3d_adjust_channel_bit_mask(struct iio_chan_spec *channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) int channel, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) channels[channel].scan_type.sign = 's';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* Real storage bits will change based on the report desc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) channels[channel].scan_type.realbits = size * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /* Maximum size of a sample to capture is u32 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) channels[channel].scan_type.storagebits = sizeof(u32) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) /* Channel read_raw handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static int magn_3d_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) int *val, int *val2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct magn_3d_state *magn_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) int report_id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) u32 address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int ret_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) s32 min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) *val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) *val2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) hid_sensor_power_state(&magn_state->magn_flux_attributes, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) report_id = magn_state->magn[chan->address].report_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) min = magn_state->magn[chan->address].logical_minimum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) address = magn_3d_addresses[chan->address];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (report_id >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) *val = sensor_hub_input_attr_get_raw_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) magn_state->magn_flux_attributes.hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) HID_USAGE_SENSOR_COMPASS_3D, address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) SENSOR_HUB_SYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) min < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) hid_sensor_power_state(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) &magn_state->magn_flux_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) hid_sensor_power_state(&magn_state->magn_flux_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ret_type = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) case IIO_MAGN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) *val = magn_state->magn_flux_attr.scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) *val2 = magn_state->magn_flux_attr.scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) ret_type = magn_state->magn_flux_attr.scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) case IIO_ROT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) *val = magn_state->rot_attr.scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) *val2 = magn_state->rot_attr.scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) ret_type = magn_state->rot_attr.scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) ret_type = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) case IIO_CHAN_INFO_OFFSET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) case IIO_MAGN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) *val = magn_state->magn_flux_attr.value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) ret_type = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) case IIO_ROT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) *val = magn_state->rot_attr.value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) ret_type = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) ret_type = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) ret_type = hid_sensor_read_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) &magn_state->magn_flux_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) case IIO_MAGN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) ret_type = hid_sensor_read_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) &magn_state->magn_flux_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) case IIO_ROT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ret_type = hid_sensor_read_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) &magn_state->rot_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret_type = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ret_type = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) break;
^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) return ret_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) /* Channel write_raw handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static int magn_3d_write_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) int val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) int val2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct magn_3d_state *magn_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) ret = hid_sensor_write_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) &magn_state->magn_flux_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) case IIO_MAGN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) ret = hid_sensor_write_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) &magn_state->magn_flux_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) case IIO_ROT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) ret = hid_sensor_write_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) &magn_state->rot_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static const struct iio_info magn_3d_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) .read_raw = &magn_3d_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) .write_raw = &magn_3d_write_raw,
^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) /* Function to push data to buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) iio_push_to_buffers(indio_dev, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /* Callback handler to send event after all samples are received and captured */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct iio_dev *indio_dev = platform_get_drvdata(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct magn_3d_state *magn_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) dev_dbg(&indio_dev->dev, "magn_3d_proc_event\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (atomic_read(&magn_state->magn_flux_attributes.data_ready))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) hid_sensor_push_data(indio_dev, magn_state->iio_vals);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) /* Capture samples in local storage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static int magn_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) size_t raw_len, char *raw_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct iio_dev *indio_dev = platform_get_drvdata(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct magn_3d_state *magn_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) int offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) u32 *iio_val = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) switch (usage_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Y_AXIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) case HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_Z_AXIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) offset = (usage_id - HID_USAGE_SENSOR_ORIENT_MAGN_FLUX_X_AXIS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) + CHANNEL_SCAN_INDEX_X;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) case HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) case HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) case HID_USAGE_SENSOR_ORIENT_MAGN_NORTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) case HID_USAGE_SENSOR_ORIENT_TRUE_NORTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) offset = (usage_id - HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) + CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) iio_val = magn_state->magn_val_addr[offset];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (iio_val != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) *iio_val = *((u32 *)raw_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /* Parse report which is specific to an usage id*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static int magn_3d_parse_report(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) struct iio_chan_spec **channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) int *chan_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct magn_3d_state *st)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) int attr_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct iio_chan_spec *_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) /* Scan for each usage attribute supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) for (i = 0; i < MAGN_3D_CHANNEL_MAX; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) u32 address = magn_3d_addresses[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /* Check if usage attribute exists in the sensor hub device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) status = sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) HID_INPUT_REPORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) &(st->magn[i]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) if (!status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) attr_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (attr_count <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) "failed to find any supported usage attributes in report\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) dev_dbg(&pdev->dev, "magn_3d Found %d usage attributes\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) attr_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) dev_dbg(&pdev->dev, "magn_3d X: %x:%x Y: %x:%x Z: %x:%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) st->magn[0].index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) st->magn[0].report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) st->magn[1].index, st->magn[1].report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) st->magn[2].index, st->magn[2].report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* Setup IIO channel array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) _channels = devm_kcalloc(&pdev->dev, attr_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) sizeof(struct iio_chan_spec),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (!_channels) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) "failed to allocate space for iio channels\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) st->iio_vals = devm_kcalloc(&pdev->dev, attr_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) sizeof(u32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (!st->iio_vals) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) "failed to allocate space for iio values array\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) for (i = 0, *chan_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) i < MAGN_3D_CHANNEL_MAX && *chan_count < attr_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) i++){
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (st->magn[i].index >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /* Setup IIO channel struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) (_channels[*chan_count]) = magn_3d_channels[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) (_channels[*chan_count]).scan_index = *chan_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) (_channels[*chan_count]).address = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) /* Set magn_val_addr to iio value address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) st->magn_val_addr[i] = &(st->iio_vals[*chan_count]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) magn_3d_adjust_channel_bit_mask(_channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) *chan_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) st->magn[i].size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) (*chan_count)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (*chan_count <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) "failed to find any magnetic channels setup\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) *channels = _channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) dev_dbg(&pdev->dev, "magn_3d Setup %d IIO channels\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) *chan_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) st->magn_flux_attr.scale_precision = hid_sensor_format_scale(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) HID_USAGE_SENSOR_COMPASS_3D,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) &st->magn[CHANNEL_SCAN_INDEX_X],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) &st->magn_flux_attr.scale_pre_decml,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) &st->magn_flux_attr.scale_post_decml);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) st->rot_attr.scale_precision
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) = hid_sensor_format_scale(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) &st->magn[CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) &st->rot_attr.scale_pre_decml,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) &st->rot_attr.scale_post_decml);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) /* Set Sensitivity field ids, when there is no individual modifier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (st->magn_flux_attributes.sensitivity.index < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) HID_FEATURE_REPORT, usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) HID_USAGE_SENSOR_DATA_ORIENTATION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) &st->magn_flux_attributes.sensitivity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) st->magn_flux_attributes.sensitivity.index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) st->magn_flux_attributes.sensitivity.report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (st->magn_flux_attributes.sensitivity.index < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) HID_FEATURE_REPORT, usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) HID_USAGE_SENSOR_ORIENT_MAGN_FLUX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) &st->magn_flux_attributes.sensitivity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) st->magn_flux_attributes.sensitivity.index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) st->magn_flux_attributes.sensitivity.report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) if (st->rot_attributes.sensitivity.index < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) HID_FEATURE_REPORT, usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) &st->rot_attributes.sensitivity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) st->rot_attributes.sensitivity.index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) st->rot_attributes.sensitivity.report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) /* Function to initialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) static int hid_magn_3d_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) static char *name = "magn_3d";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) struct magn_3d_state *magn_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) struct iio_chan_spec *channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) int chan_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) indio_dev = devm_iio_device_alloc(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) sizeof(struct magn_3d_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (indio_dev == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) platform_set_drvdata(pdev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) magn_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) magn_state->magn_flux_attributes.hsdev = hsdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) magn_state->magn_flux_attributes.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) ret = hid_sensor_parse_common_attributes(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) HID_USAGE_SENSOR_COMPASS_3D,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) &magn_state->magn_flux_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) dev_err(&pdev->dev, "failed to setup common attributes\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) magn_state->rot_attributes = magn_state->magn_flux_attributes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) ret = magn_3d_parse_report(pdev, hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) &channels, &chan_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) HID_USAGE_SENSOR_COMPASS_3D, magn_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) dev_err(&pdev->dev, "failed to parse report\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) indio_dev->channels = channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) indio_dev->num_channels = chan_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) indio_dev->info = &magn_3d_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) indio_dev->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) atomic_set(&magn_state->magn_flux_attributes.data_ready, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) ret = hid_sensor_setup_trigger(indio_dev, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) &magn_state->magn_flux_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) dev_err(&pdev->dev, "trigger setup failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) dev_err(&pdev->dev, "device register failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) goto error_remove_trigger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) magn_state->callbacks.send_event = magn_3d_proc_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) magn_state->callbacks.capture_sample = magn_3d_capture_sample;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) magn_state->callbacks.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) &magn_state->callbacks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) dev_err(&pdev->dev, "callback reg failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) goto error_iio_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) error_iio_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) error_remove_trigger:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) hid_sensor_remove_trigger(indio_dev, &magn_state->magn_flux_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) /* Function to deinitialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) static int hid_magn_3d_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) struct magn_3d_state *magn_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) hid_sensor_remove_trigger(indio_dev, &magn_state->magn_flux_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) static const struct platform_device_id hid_magn_3d_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) .name = "HID-SENSOR-200083",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) MODULE_DEVICE_TABLE(platform, hid_magn_3d_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) static struct platform_driver hid_magn_3d_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) .id_table = hid_magn_3d_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) .pm = &hid_sensor_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) .probe = hid_magn_3d_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) .remove = hid_magn_3d_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) module_platform_driver(hid_magn_3d_platform_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) MODULE_DESCRIPTION("HID Sensor Magnetometer 3D");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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