^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 gyro_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) GYRO_3D_CHANNEL_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct gyro_3d_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct hid_sensor_hub_callbacks callbacks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct hid_sensor_common common_attributes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct hid_sensor_hub_attribute_info gyro[GYRO_3D_CHANNEL_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) u32 gyro_val[GYRO_3D_CHANNEL_MAX];
^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) static const u32 gyro_3d_addresses[GYRO_3D_CHANNEL_MAX] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) HID_USAGE_SENSOR_ANGL_VELOCITY_Y_AXIS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* Channel definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static const struct iio_chan_spec gyro_3d_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) .type = IIO_ANGL_VEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) .channel2 = IIO_MOD_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .scan_index = CHANNEL_SCAN_INDEX_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) .type = IIO_ANGL_VEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) .channel2 = IIO_MOD_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .scan_index = CHANNEL_SCAN_INDEX_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .type = IIO_ANGL_VEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) .modified = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .channel2 = IIO_MOD_Z,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) BIT(IIO_CHAN_INFO_SAMP_FREQ) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) BIT(IIO_CHAN_INFO_HYSTERESIS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .scan_index = CHANNEL_SCAN_INDEX_Z,
^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) /* Adjust channel real bits based on report descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static void gyro_3d_adjust_channel_bit_mask(struct iio_chan_spec *channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) int channel, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) channels[channel].scan_type.sign = 's';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Real storage bits will change based on the report desc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) channels[channel].scan_type.realbits = size * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* Maximum size of a sample to capture is u32 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) channels[channel].scan_type.storagebits = sizeof(u32) * 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /* Channel read_raw handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static int gyro_3d_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int *val, int *val2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int report_id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u32 address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int ret_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) s32 min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) *val2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) hid_sensor_power_state(&gyro_state->common_attributes, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) report_id = gyro_state->gyro[chan->scan_index].report_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) min = gyro_state->gyro[chan->scan_index].logical_minimum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) address = gyro_3d_addresses[chan->scan_index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (report_id >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) *val = sensor_hub_input_attr_get_raw_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) gyro_state->common_attributes.hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) HID_USAGE_SENSOR_GYRO_3D, address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) SENSOR_HUB_SYNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) min < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) *val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) hid_sensor_power_state(&gyro_state->common_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) hid_sensor_power_state(&gyro_state->common_attributes, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) ret_type = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) *val = gyro_state->scale_pre_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) *val2 = gyro_state->scale_post_decml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) ret_type = gyro_state->scale_precision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) case IIO_CHAN_INFO_OFFSET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) *val = gyro_state->value_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ret_type = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) ret_type = hid_sensor_read_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) &gyro_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ret_type = hid_sensor_read_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) &gyro_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) ret_type = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) break;
^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_type;
^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) /* Channel write_raw handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static int gyro_3d_write_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) int val2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) case IIO_CHAN_INFO_SAMP_FREQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) ret = hid_sensor_write_samp_freq_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) &gyro_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) case IIO_CHAN_INFO_HYSTERESIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) ret = hid_sensor_write_raw_hyst_value(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) &gyro_state->common_attributes, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static const struct iio_info gyro_3d_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .read_raw = &gyro_3d_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .write_raw = &gyro_3d_write_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Function to push data to buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) iio_push_to_buffers(indio_dev, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /* Callback handler to send event after all samples are received and captured */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct iio_dev *indio_dev = platform_get_drvdata(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) dev_dbg(&indio_dev->dev, "gyro_3d_proc_event\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (atomic_read(&gyro_state->common_attributes.data_ready))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) hid_sensor_push_data(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) gyro_state->gyro_val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) sizeof(gyro_state->gyro_val));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* Capture samples in local storage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static int gyro_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) size_t raw_len, char *raw_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct iio_dev *indio_dev = platform_get_drvdata(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) switch (usage_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) case HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) case HID_USAGE_SENSOR_ANGL_VELOCITY_Y_AXIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) case HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) offset = usage_id - HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) gyro_state->gyro_val[CHANNEL_SCAN_INDEX_X + offset] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) *(u32 *)raw_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /* Parse report which is specific to an usage id*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) static int gyro_3d_parse_report(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct hid_sensor_hub_device *hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct iio_chan_spec *channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) unsigned usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct gyro_3d_state *st)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) for (i = 0; i <= CHANNEL_SCAN_INDEX_Z; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) ret = sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) HID_INPUT_REPORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS + i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) &st->gyro[CHANNEL_SCAN_INDEX_X + i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) gyro_3d_adjust_channel_bit_mask(channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) CHANNEL_SCAN_INDEX_X + i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) st->gyro[CHANNEL_SCAN_INDEX_X + i].size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) dev_dbg(&pdev->dev, "gyro_3d %x:%x, %x:%x, %x:%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) st->gyro[0].index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) st->gyro[0].report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) st->gyro[1].index, st->gyro[1].report_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) st->gyro[2].index, st->gyro[2].report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) st->scale_precision = hid_sensor_format_scale(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) HID_USAGE_SENSOR_GYRO_3D,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) &st->gyro[CHANNEL_SCAN_INDEX_X],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) &st->scale_pre_decml, &st->scale_post_decml);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /* Set Sensitivity field ids, when there is no individual modifier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (st->common_attributes.sensitivity.index < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) sensor_hub_input_get_attribute_info(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) HID_FEATURE_REPORT, usage_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) HID_USAGE_SENSOR_DATA_ANGL_VELOCITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) &st->common_attributes.sensitivity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) st->common_attributes.sensitivity.index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) st->common_attributes.sensitivity.report_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /* Function to initialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static int hid_gyro_3d_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static const char *name = "gyro_3d";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) struct gyro_3d_state *gyro_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*gyro_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) platform_set_drvdata(pdev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) gyro_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) gyro_state->common_attributes.hsdev = hsdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) gyro_state->common_attributes.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) ret = hid_sensor_parse_common_attributes(hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) HID_USAGE_SENSOR_GYRO_3D,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) &gyro_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) dev_err(&pdev->dev, "failed to setup common attributes\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) indio_dev->channels = kmemdup(gyro_3d_channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) sizeof(gyro_3d_channels), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (!indio_dev->channels) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) dev_err(&pdev->dev, "failed to duplicate channels\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) ret = gyro_3d_parse_report(pdev, hsdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) (struct iio_chan_spec *)indio_dev->channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) HID_USAGE_SENSOR_GYRO_3D, gyro_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) dev_err(&pdev->dev, "failed to setup attributes\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) goto error_free_dev_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) indio_dev->num_channels = ARRAY_SIZE(gyro_3d_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) indio_dev->info = &gyro_3d_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) indio_dev->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) atomic_set(&gyro_state->common_attributes.data_ready, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) ret = hid_sensor_setup_trigger(indio_dev, name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) &gyro_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) dev_err(&pdev->dev, "trigger setup failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) goto error_free_dev_mem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) dev_err(&pdev->dev, "device register failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) goto error_remove_trigger;
^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) gyro_state->callbacks.send_event = gyro_3d_proc_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) gyro_state->callbacks.capture_sample = gyro_3d_capture_sample;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) gyro_state->callbacks.pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_GYRO_3D,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) &gyro_state->callbacks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) dev_err(&pdev->dev, "callback reg failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) goto error_iio_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) error_iio_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) error_remove_trigger:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) hid_sensor_remove_trigger(indio_dev, &gyro_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) error_free_dev_mem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) kfree(indio_dev->channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* Function to deinitialize the processing for usage id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static int hid_gyro_3d_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_GYRO_3D);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) hid_sensor_remove_trigger(indio_dev, &gyro_state->common_attributes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) kfree(indio_dev->channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) static const struct platform_device_id hid_gyro_3d_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* Format: HID-SENSOR-usage_id_in_hex_lowercase */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) .name = "HID-SENSOR-200076",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) MODULE_DEVICE_TABLE(platform, hid_gyro_3d_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) static struct platform_driver hid_gyro_3d_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) .id_table = hid_gyro_3d_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) .pm = &hid_sensor_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) .probe = hid_gyro_3d_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) .remove = hid_gyro_3d_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) module_platform_driver(hid_gyro_3d_platform_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) MODULE_DESCRIPTION("HID Sensor Gyroscope 3D");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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