137aa055cSEnric Balletbo i Serra // SPDX-License-Identifier: GPL-2.0 2c14dca07SEnric Balletbo i Serra /* 3c14dca07SEnric Balletbo i Serra * cros_ec_sensors - Driver for Chrome OS Embedded Controller sensors. 4c14dca07SEnric Balletbo i Serra * 5c14dca07SEnric Balletbo i Serra * Copyright (C) 2016 Google, Inc 6c14dca07SEnric Balletbo i Serra * 7c14dca07SEnric Balletbo i Serra * This driver uses the cros-ec interface to communicate with the Chrome OS 8c14dca07SEnric Balletbo i Serra * EC about sensors data. Data access is presented through iio sysfs. 9c14dca07SEnric Balletbo i Serra */ 10c14dca07SEnric Balletbo i Serra 11c14dca07SEnric Balletbo i Serra #include <linux/device.h> 12c14dca07SEnric Balletbo i Serra #include <linux/iio/buffer.h> 135a0b8cb4SGwendal Grignou #include <linux/iio/common/cros_ec_sensors_core.h> 14c14dca07SEnric Balletbo i Serra #include <linux/iio/iio.h> 15c14dca07SEnric Balletbo i Serra #include <linux/iio/kfifo_buf.h> 16c14dca07SEnric Balletbo i Serra #include <linux/iio/trigger_consumer.h> 17c14dca07SEnric Balletbo i Serra #include <linux/iio/triggered_buffer.h> 18c14dca07SEnric Balletbo i Serra #include <linux/kernel.h> 19c14dca07SEnric Balletbo i Serra #include <linux/module.h> 20840d9f13SEnric Balletbo i Serra #include <linux/platform_data/cros_ec_commands.h> 21840d9f13SEnric Balletbo i Serra #include <linux/platform_data/cros_ec_proto.h> 22c14dca07SEnric Balletbo i Serra #include <linux/platform_device.h> 23c14dca07SEnric Balletbo i Serra #include <linux/slab.h> 24c14dca07SEnric Balletbo i Serra 25c14dca07SEnric Balletbo i Serra #define CROS_EC_SENSORS_MAX_CHANNELS 4 26c14dca07SEnric Balletbo i Serra 27c14dca07SEnric Balletbo i Serra /* State data for ec_sensors iio driver. */ 28c14dca07SEnric Balletbo i Serra struct cros_ec_sensors_state { 29c14dca07SEnric Balletbo i Serra /* Shared by all sensors */ 30c14dca07SEnric Balletbo i Serra struct cros_ec_sensors_core_state core; 31c14dca07SEnric Balletbo i Serra 32c14dca07SEnric Balletbo i Serra struct iio_chan_spec channels[CROS_EC_SENSORS_MAX_CHANNELS]; 33c14dca07SEnric Balletbo i Serra }; 34c14dca07SEnric Balletbo i Serra 35c14dca07SEnric Balletbo i Serra static int cros_ec_sensors_read(struct iio_dev *indio_dev, 36c14dca07SEnric Balletbo i Serra struct iio_chan_spec const *chan, 37c14dca07SEnric Balletbo i Serra int *val, int *val2, long mask) 38c14dca07SEnric Balletbo i Serra { 39c14dca07SEnric Balletbo i Serra struct cros_ec_sensors_state *st = iio_priv(indio_dev); 40c14dca07SEnric Balletbo i Serra s16 data = 0; 41c14dca07SEnric Balletbo i Serra s64 val64; 42c14dca07SEnric Balletbo i Serra int i; 435668bfddSEnric Balletbo i Serra int ret; 44c14dca07SEnric Balletbo i Serra int idx = chan->scan_index; 45c14dca07SEnric Balletbo i Serra 46c14dca07SEnric Balletbo i Serra mutex_lock(&st->core.cmd_lock); 47c14dca07SEnric Balletbo i Serra 48c14dca07SEnric Balletbo i Serra switch (mask) { 49c14dca07SEnric Balletbo i Serra case IIO_CHAN_INFO_RAW: 50c14dca07SEnric Balletbo i Serra ret = st->core.read_ec_sensors_data(indio_dev, 1 << idx, &data); 51c14dca07SEnric Balletbo i Serra if (ret < 0) 52c14dca07SEnric Balletbo i Serra break; 53a096926eSEnric Balletbo i Serra ret = IIO_VAL_INT; 54c14dca07SEnric Balletbo i Serra *val = data; 55c14dca07SEnric Balletbo i Serra break; 56c14dca07SEnric Balletbo i Serra case IIO_CHAN_INFO_CALIBBIAS: 57c14dca07SEnric Balletbo i Serra st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_OFFSET; 58c14dca07SEnric Balletbo i Serra st->core.param.sensor_offset.flags = 0; 59c14dca07SEnric Balletbo i Serra 60c14dca07SEnric Balletbo i Serra ret = cros_ec_motion_send_host_cmd(&st->core, 0); 61c14dca07SEnric Balletbo i Serra if (ret < 0) 62c14dca07SEnric Balletbo i Serra break; 63c14dca07SEnric Balletbo i Serra 64c14dca07SEnric Balletbo i Serra /* Save values */ 65c14dca07SEnric Balletbo i Serra for (i = CROS_EC_SENSOR_X; i < CROS_EC_SENSOR_MAX_AXIS; i++) 66ed1f2e85SGwendal Grignou st->core.calib[i].offset = 67c14dca07SEnric Balletbo i Serra st->core.resp->sensor_offset.offset[i]; 68a096926eSEnric Balletbo i Serra ret = IIO_VAL_INT; 69ed1f2e85SGwendal Grignou *val = st->core.calib[idx].offset; 70ed1f2e85SGwendal Grignou break; 71ed1f2e85SGwendal Grignou case IIO_CHAN_INFO_CALIBSCALE: 72ed1f2e85SGwendal Grignou st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_SCALE; 73ed1f2e85SGwendal Grignou st->core.param.sensor_offset.flags = 0; 74ed1f2e85SGwendal Grignou 75ed1f2e85SGwendal Grignou ret = cros_ec_motion_send_host_cmd(&st->core, 0); 76ed1f2e85SGwendal Grignou if (ret == -EPROTO) { 77ed1f2e85SGwendal Grignou /* Reading calibscale is not supported on older EC. */ 78ed1f2e85SGwendal Grignou *val = 1; 79ed1f2e85SGwendal Grignou *val2 = 0; 80ed1f2e85SGwendal Grignou ret = IIO_VAL_INT_PLUS_MICRO; 81ed1f2e85SGwendal Grignou break; 82ed1f2e85SGwendal Grignou } else if (ret) { 83ed1f2e85SGwendal Grignou break; 84ed1f2e85SGwendal Grignou } 85ed1f2e85SGwendal Grignou 86ed1f2e85SGwendal Grignou /* Save values */ 87ed1f2e85SGwendal Grignou for (i = CROS_EC_SENSOR_X; i < CROS_EC_SENSOR_MAX_AXIS; i++) 88ed1f2e85SGwendal Grignou st->core.calib[i].scale = 89ed1f2e85SGwendal Grignou st->core.resp->sensor_scale.scale[i]; 90ed1f2e85SGwendal Grignou 91ed1f2e85SGwendal Grignou *val = st->core.calib[idx].scale >> 15; 92ed1f2e85SGwendal Grignou *val2 = ((st->core.calib[idx].scale & 0x7FFF) * 1000000LL) / 93ed1f2e85SGwendal Grignou MOTION_SENSE_DEFAULT_SCALE; 94ed1f2e85SGwendal Grignou ret = IIO_VAL_INT_PLUS_MICRO; 95c14dca07SEnric Balletbo i Serra break; 96c14dca07SEnric Balletbo i Serra case IIO_CHAN_INFO_SCALE: 97c14dca07SEnric Balletbo i Serra st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE; 98c14dca07SEnric Balletbo i Serra st->core.param.sensor_range.data = EC_MOTION_SENSE_NO_VALUE; 99c14dca07SEnric Balletbo i Serra 100c14dca07SEnric Balletbo i Serra ret = cros_ec_motion_send_host_cmd(&st->core, 0); 101c14dca07SEnric Balletbo i Serra if (ret < 0) 102c14dca07SEnric Balletbo i Serra break; 103c14dca07SEnric Balletbo i Serra 104c14dca07SEnric Balletbo i Serra val64 = st->core.resp->sensor_range.ret; 105c14dca07SEnric Balletbo i Serra switch (st->core.type) { 106c14dca07SEnric Balletbo i Serra case MOTIONSENSE_TYPE_ACCEL: 107c14dca07SEnric Balletbo i Serra /* 108c14dca07SEnric Balletbo i Serra * EC returns data in g, iio exepects m/s^2. 109c14dca07SEnric Balletbo i Serra * Do not use IIO_G_TO_M_S_2 to avoid precision loss. 110c14dca07SEnric Balletbo i Serra */ 111c14dca07SEnric Balletbo i Serra *val = div_s64(val64 * 980665, 10); 112c14dca07SEnric Balletbo i Serra *val2 = 10000 << (CROS_EC_SENSOR_BITS - 1); 113c14dca07SEnric Balletbo i Serra ret = IIO_VAL_FRACTIONAL; 114c14dca07SEnric Balletbo i Serra break; 115c14dca07SEnric Balletbo i Serra case MOTIONSENSE_TYPE_GYRO: 116c14dca07SEnric Balletbo i Serra /* 117c14dca07SEnric Balletbo i Serra * EC returns data in dps, iio expects rad/s. 118c14dca07SEnric Balletbo i Serra * Do not use IIO_DEGREE_TO_RAD to avoid precision 119c14dca07SEnric Balletbo i Serra * loss. Round to the nearest integer. 120c14dca07SEnric Balletbo i Serra */ 1213d02d708SGwendal Grignou *val = 0; 1223d02d708SGwendal Grignou *val2 = div_s64(val64 * 3141592653ULL, 1233d02d708SGwendal Grignou 180 << (CROS_EC_SENSOR_BITS - 1)); 1243d02d708SGwendal Grignou ret = IIO_VAL_INT_PLUS_NANO; 125c14dca07SEnric Balletbo i Serra break; 126c14dca07SEnric Balletbo i Serra case MOTIONSENSE_TYPE_MAG: 127c14dca07SEnric Balletbo i Serra /* 128c14dca07SEnric Balletbo i Serra * EC returns data in 16LSB / uT, 129c14dca07SEnric Balletbo i Serra * iio expects Gauss 130c14dca07SEnric Balletbo i Serra */ 131c14dca07SEnric Balletbo i Serra *val = val64; 132c14dca07SEnric Balletbo i Serra *val2 = 100 << (CROS_EC_SENSOR_BITS - 1); 133c14dca07SEnric Balletbo i Serra ret = IIO_VAL_FRACTIONAL; 134c14dca07SEnric Balletbo i Serra break; 135c14dca07SEnric Balletbo i Serra default: 136c14dca07SEnric Balletbo i Serra ret = -EINVAL; 137c14dca07SEnric Balletbo i Serra } 138c14dca07SEnric Balletbo i Serra break; 139c14dca07SEnric Balletbo i Serra default: 140c14dca07SEnric Balletbo i Serra ret = cros_ec_sensors_core_read(&st->core, chan, val, val2, 141c14dca07SEnric Balletbo i Serra mask); 142c14dca07SEnric Balletbo i Serra break; 143c14dca07SEnric Balletbo i Serra } 144c14dca07SEnric Balletbo i Serra mutex_unlock(&st->core.cmd_lock); 145c14dca07SEnric Balletbo i Serra 146c14dca07SEnric Balletbo i Serra return ret; 147c14dca07SEnric Balletbo i Serra } 148c14dca07SEnric Balletbo i Serra 149c14dca07SEnric Balletbo i Serra static int cros_ec_sensors_write(struct iio_dev *indio_dev, 150c14dca07SEnric Balletbo i Serra struct iio_chan_spec const *chan, 151c14dca07SEnric Balletbo i Serra int val, int val2, long mask) 152c14dca07SEnric Balletbo i Serra { 153c14dca07SEnric Balletbo i Serra struct cros_ec_sensors_state *st = iio_priv(indio_dev); 154c14dca07SEnric Balletbo i Serra int i; 1555668bfddSEnric Balletbo i Serra int ret; 156c14dca07SEnric Balletbo i Serra int idx = chan->scan_index; 157c14dca07SEnric Balletbo i Serra 158c14dca07SEnric Balletbo i Serra mutex_lock(&st->core.cmd_lock); 159c14dca07SEnric Balletbo i Serra 160c14dca07SEnric Balletbo i Serra switch (mask) { 161c14dca07SEnric Balletbo i Serra case IIO_CHAN_INFO_CALIBBIAS: 162ed1f2e85SGwendal Grignou st->core.calib[idx].offset = val; 163c14dca07SEnric Balletbo i Serra 164c14dca07SEnric Balletbo i Serra /* Send to EC for each axis, even if not complete */ 165c14dca07SEnric Balletbo i Serra st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_OFFSET; 166c14dca07SEnric Balletbo i Serra st->core.param.sensor_offset.flags = 167c14dca07SEnric Balletbo i Serra MOTION_SENSE_SET_OFFSET; 168c14dca07SEnric Balletbo i Serra for (i = CROS_EC_SENSOR_X; i < CROS_EC_SENSOR_MAX_AXIS; i++) 169c14dca07SEnric Balletbo i Serra st->core.param.sensor_offset.offset[i] = 170ed1f2e85SGwendal Grignou st->core.calib[i].offset; 171c14dca07SEnric Balletbo i Serra st->core.param.sensor_offset.temp = 172c14dca07SEnric Balletbo i Serra EC_MOTION_SENSE_INVALID_CALIB_TEMP; 173c14dca07SEnric Balletbo i Serra 174c14dca07SEnric Balletbo i Serra ret = cros_ec_motion_send_host_cmd(&st->core, 0); 175c14dca07SEnric Balletbo i Serra break; 176ed1f2e85SGwendal Grignou case IIO_CHAN_INFO_CALIBSCALE: 177ed1f2e85SGwendal Grignou st->core.calib[idx].scale = val; 178ed1f2e85SGwendal Grignou /* Send to EC for each axis, even if not complete */ 179ed1f2e85SGwendal Grignou 180ed1f2e85SGwendal Grignou st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_SCALE; 181ed1f2e85SGwendal Grignou st->core.param.sensor_offset.flags = 182ed1f2e85SGwendal Grignou MOTION_SENSE_SET_OFFSET; 183ed1f2e85SGwendal Grignou for (i = CROS_EC_SENSOR_X; i < CROS_EC_SENSOR_MAX_AXIS; i++) 184ed1f2e85SGwendal Grignou st->core.param.sensor_scale.scale[i] = 185ed1f2e85SGwendal Grignou st->core.calib[i].scale; 186ed1f2e85SGwendal Grignou st->core.param.sensor_scale.temp = 187ed1f2e85SGwendal Grignou EC_MOTION_SENSE_INVALID_CALIB_TEMP; 188ed1f2e85SGwendal Grignou 189ed1f2e85SGwendal Grignou ret = cros_ec_motion_send_host_cmd(&st->core, 0); 190ed1f2e85SGwendal Grignou break; 191c14dca07SEnric Balletbo i Serra case IIO_CHAN_INFO_SCALE: 192c14dca07SEnric Balletbo i Serra if (st->core.type == MOTIONSENSE_TYPE_MAG) { 193c14dca07SEnric Balletbo i Serra ret = -EINVAL; 194c14dca07SEnric Balletbo i Serra break; 195c14dca07SEnric Balletbo i Serra } 196c14dca07SEnric Balletbo i Serra st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE; 197c14dca07SEnric Balletbo i Serra st->core.param.sensor_range.data = val; 198c14dca07SEnric Balletbo i Serra 199c14dca07SEnric Balletbo i Serra /* Always roundup, so caller gets at least what it asks for. */ 200c14dca07SEnric Balletbo i Serra st->core.param.sensor_range.roundup = 1; 201c14dca07SEnric Balletbo i Serra 202c14dca07SEnric Balletbo i Serra ret = cros_ec_motion_send_host_cmd(&st->core, 0); 203c14dca07SEnric Balletbo i Serra break; 204c14dca07SEnric Balletbo i Serra default: 205c14dca07SEnric Balletbo i Serra ret = cros_ec_sensors_core_write( 206c14dca07SEnric Balletbo i Serra &st->core, chan, val, val2, mask); 207c14dca07SEnric Balletbo i Serra break; 208c14dca07SEnric Balletbo i Serra } 209c14dca07SEnric Balletbo i Serra 210c14dca07SEnric Balletbo i Serra mutex_unlock(&st->core.cmd_lock); 211c14dca07SEnric Balletbo i Serra 212c14dca07SEnric Balletbo i Serra return ret; 213c14dca07SEnric Balletbo i Serra } 214c14dca07SEnric Balletbo i Serra 215c14dca07SEnric Balletbo i Serra static const struct iio_info ec_sensors_info = { 216c14dca07SEnric Balletbo i Serra .read_raw = &cros_ec_sensors_read, 217c14dca07SEnric Balletbo i Serra .write_raw = &cros_ec_sensors_write, 218ae7b02adSFabien Lahoudere .read_avail = &cros_ec_sensors_core_read_avail, 219c14dca07SEnric Balletbo i Serra }; 220c14dca07SEnric Balletbo i Serra 221c14dca07SEnric Balletbo i Serra static int cros_ec_sensors_probe(struct platform_device *pdev) 222c14dca07SEnric Balletbo i Serra { 223c14dca07SEnric Balletbo i Serra struct device *dev = &pdev->dev; 224c14dca07SEnric Balletbo i Serra struct iio_dev *indio_dev; 225c14dca07SEnric Balletbo i Serra struct cros_ec_sensors_state *state; 226c14dca07SEnric Balletbo i Serra struct iio_chan_spec *channel; 227c14dca07SEnric Balletbo i Serra int ret, i; 228c14dca07SEnric Balletbo i Serra 229c14dca07SEnric Balletbo i Serra indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*state)); 230c14dca07SEnric Balletbo i Serra if (!indio_dev) 231c14dca07SEnric Balletbo i Serra return -ENOMEM; 232c14dca07SEnric Balletbo i Serra 233aa984f1bSGwendal Grignou ret = cros_ec_sensors_core_init(pdev, indio_dev, true, 234aa984f1bSGwendal Grignou cros_ec_sensors_capture, 235aa984f1bSGwendal Grignou cros_ec_sensors_push_data); 236c14dca07SEnric Balletbo i Serra if (ret) 237c14dca07SEnric Balletbo i Serra return ret; 238c14dca07SEnric Balletbo i Serra 239c14dca07SEnric Balletbo i Serra indio_dev->info = &ec_sensors_info; 240c14dca07SEnric Balletbo i Serra state = iio_priv(indio_dev); 241c14dca07SEnric Balletbo i Serra for (channel = state->channels, i = CROS_EC_SENSOR_X; 242c14dca07SEnric Balletbo i Serra i < CROS_EC_SENSOR_MAX_AXIS; i++, channel++) { 243c14dca07SEnric Balletbo i Serra /* Common part */ 244c14dca07SEnric Balletbo i Serra channel->info_mask_separate = 245c14dca07SEnric Balletbo i Serra BIT(IIO_CHAN_INFO_RAW) | 246ed1f2e85SGwendal Grignou BIT(IIO_CHAN_INFO_CALIBBIAS) | 247ed1f2e85SGwendal Grignou BIT(IIO_CHAN_INFO_CALIBSCALE); 248c14dca07SEnric Balletbo i Serra channel->info_mask_shared_by_all = 249c14dca07SEnric Balletbo i Serra BIT(IIO_CHAN_INFO_SCALE) | 250c14dca07SEnric Balletbo i Serra BIT(IIO_CHAN_INFO_FREQUENCY) | 251c14dca07SEnric Balletbo i Serra BIT(IIO_CHAN_INFO_SAMP_FREQ); 252ae7b02adSFabien Lahoudere channel->info_mask_shared_by_all_available = 253ae7b02adSFabien Lahoudere BIT(IIO_CHAN_INFO_SAMP_FREQ); 254c14dca07SEnric Balletbo i Serra channel->scan_type.realbits = CROS_EC_SENSOR_BITS; 255c14dca07SEnric Balletbo i Serra channel->scan_type.storagebits = CROS_EC_SENSOR_BITS; 256c14dca07SEnric Balletbo i Serra channel->scan_index = i; 257c14dca07SEnric Balletbo i Serra channel->ext_info = cros_ec_sensors_ext_info; 258c14dca07SEnric Balletbo i Serra channel->modified = 1; 259c14dca07SEnric Balletbo i Serra channel->channel2 = IIO_MOD_X + i; 260c14dca07SEnric Balletbo i Serra channel->scan_type.sign = 's'; 261c14dca07SEnric Balletbo i Serra 262c14dca07SEnric Balletbo i Serra /* Sensor specific */ 263c14dca07SEnric Balletbo i Serra switch (state->core.type) { 264c14dca07SEnric Balletbo i Serra case MOTIONSENSE_TYPE_ACCEL: 265c14dca07SEnric Balletbo i Serra channel->type = IIO_ACCEL; 266c14dca07SEnric Balletbo i Serra break; 267c14dca07SEnric Balletbo i Serra case MOTIONSENSE_TYPE_GYRO: 268c14dca07SEnric Balletbo i Serra channel->type = IIO_ANGL_VEL; 269c14dca07SEnric Balletbo i Serra break; 270c14dca07SEnric Balletbo i Serra case MOTIONSENSE_TYPE_MAG: 271c14dca07SEnric Balletbo i Serra channel->type = IIO_MAGN; 272c14dca07SEnric Balletbo i Serra break; 273c14dca07SEnric Balletbo i Serra default: 274c14dca07SEnric Balletbo i Serra dev_err(&pdev->dev, "Unknown motion sensor\n"); 275c14dca07SEnric Balletbo i Serra return -EINVAL; 276c14dca07SEnric Balletbo i Serra } 277c14dca07SEnric Balletbo i Serra } 278c14dca07SEnric Balletbo i Serra 279c14dca07SEnric Balletbo i Serra /* Timestamp */ 280c14dca07SEnric Balletbo i Serra channel->type = IIO_TIMESTAMP; 281c14dca07SEnric Balletbo i Serra channel->channel = -1; 282c14dca07SEnric Balletbo i Serra channel->scan_index = CROS_EC_SENSOR_MAX_AXIS; 283c14dca07SEnric Balletbo i Serra channel->scan_type.sign = 's'; 284c14dca07SEnric Balletbo i Serra channel->scan_type.realbits = 64; 285c14dca07SEnric Balletbo i Serra channel->scan_type.storagebits = 64; 286c14dca07SEnric Balletbo i Serra 287c14dca07SEnric Balletbo i Serra indio_dev->channels = state->channels; 288c14dca07SEnric Balletbo i Serra indio_dev->num_channels = CROS_EC_SENSORS_MAX_CHANNELS; 289c14dca07SEnric Balletbo i Serra 290c14dca07SEnric Balletbo i Serra /* There is only enough room for accel and gyro in the io space */ 291c14dca07SEnric Balletbo i Serra if ((state->core.ec->cmd_readmem != NULL) && 292c14dca07SEnric Balletbo i Serra (state->core.type != MOTIONSENSE_TYPE_MAG)) 293c14dca07SEnric Balletbo i Serra state->core.read_ec_sensors_data = cros_ec_sensors_read_lpc; 294c14dca07SEnric Balletbo i Serra else 295c14dca07SEnric Balletbo i Serra state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd; 296c14dca07SEnric Balletbo i Serra 297754434c4SEnric Balletbo i Serra return devm_iio_device_register(dev, indio_dev); 298c14dca07SEnric Balletbo i Serra } 299c14dca07SEnric Balletbo i Serra 300c14dca07SEnric Balletbo i Serra static const struct platform_device_id cros_ec_sensors_ids[] = { 301c14dca07SEnric Balletbo i Serra { 302c14dca07SEnric Balletbo i Serra .name = "cros-ec-accel", 303c14dca07SEnric Balletbo i Serra }, 304c14dca07SEnric Balletbo i Serra { 305c14dca07SEnric Balletbo i Serra .name = "cros-ec-gyro", 306c14dca07SEnric Balletbo i Serra }, 307c14dca07SEnric Balletbo i Serra { 308c14dca07SEnric Balletbo i Serra .name = "cros-ec-mag", 309c14dca07SEnric Balletbo i Serra }, 310c14dca07SEnric Balletbo i Serra { /* sentinel */ } 311c14dca07SEnric Balletbo i Serra }; 312c14dca07SEnric Balletbo i Serra MODULE_DEVICE_TABLE(platform, cros_ec_sensors_ids); 313c14dca07SEnric Balletbo i Serra 314c14dca07SEnric Balletbo i Serra static struct platform_driver cros_ec_sensors_platform_driver = { 315c14dca07SEnric Balletbo i Serra .driver = { 316c14dca07SEnric Balletbo i Serra .name = "cros-ec-sensors", 3170dad1eceSGwendal Grignou .pm = &cros_ec_sensors_pm_ops, 318c14dca07SEnric Balletbo i Serra }, 319c14dca07SEnric Balletbo i Serra .probe = cros_ec_sensors_probe, 320c14dca07SEnric Balletbo i Serra .id_table = cros_ec_sensors_ids, 321c14dca07SEnric Balletbo i Serra }; 322c14dca07SEnric Balletbo i Serra module_platform_driver(cros_ec_sensors_platform_driver); 323c14dca07SEnric Balletbo i Serra 324c14dca07SEnric Balletbo i Serra MODULE_DESCRIPTION("ChromeOS EC 3-axis sensors driver"); 325c14dca07SEnric Balletbo i Serra MODULE_LICENSE("GPL v2"); 326