1 // SPDX-License-Identifier: GPL-2.0
3  * cros_ec_baro - Driver for barometer sensor behind CrosEC.
43 	int idx = chan->scan_index;  in cros_ec_baro_read()
45 	mutex_lock(&st->core.cmd_lock);  in cros_ec_baro_read()
58 		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;  in cros_ec_baro_read()
59 		st->core.param.sensor_range.data = EC_MOTION_SENSE_NO_VALUE;  in cros_ec_baro_read()
61 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);  in cros_ec_baro_read()
65 		*val = st->core.resp->sensor_range.ret;  in cros_ec_baro_read()
67 		/* scale * in_pressure_raw --> kPa */  in cros_ec_baro_read()
72 		ret = cros_ec_sensors_core_read(&st->core, chan, val, val2,  in cros_ec_baro_read()
77 	mutex_unlock(&st->core.cmd_lock);  in cros_ec_baro_read()
89 	mutex_lock(&st->core.cmd_lock);  in cros_ec_baro_write()
93 		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;  in cros_ec_baro_write()
94 		st->core.param.sensor_range.data = val;  in cros_ec_baro_write()
97 		st->core.param.sensor_range.roundup = 1;  in cros_ec_baro_write()
99 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);  in cros_ec_baro_write()
101 			st->core.range_updated = true;  in cros_ec_baro_write()
102 			st->core.curr_range = val;  in cros_ec_baro_write()
106 		ret = cros_ec_sensors_core_write(&st->core, chan, val, val2,  in cros_ec_baro_write()
111 	mutex_unlock(&st->core.cmd_lock);  in cros_ec_baro_write()
124 	struct device *dev = &pdev->dev;  in cros_ec_baro_probe()
125 	struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent);  in cros_ec_baro_probe()
131 	if (!ec_dev || !ec_dev->ec_dev) {  in cros_ec_baro_probe()
132 		dev_warn(dev, "No CROS EC device found.\n");  in cros_ec_baro_probe()
133 		return -EINVAL;  in cros_ec_baro_probe()
138 		return -ENOMEM;  in cros_ec_baro_probe()
147 	indio_dev->info = &cros_ec_baro_info;  in cros_ec_baro_probe()
149 	state->core.type = state->core.resp->info.type;  in cros_ec_baro_probe()
150 	state->core.loc = state->core.resp->info.location;  in cros_ec_baro_probe()
151 	channel = state->channels;  in cros_ec_baro_probe()
153 	channel->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);  in cros_ec_baro_probe()
154 	channel->info_mask_shared_by_all =  in cros_ec_baro_probe()
157 	channel->info_mask_shared_by_all_available =  in cros_ec_baro_probe()
159 	channel->scan_type.realbits = CROS_EC_SENSOR_BITS;  in cros_ec_baro_probe()
160 	channel->scan_type.storagebits = CROS_EC_SENSOR_BITS;  in cros_ec_baro_probe()
161 	channel->scan_type.shift = 0;  in cros_ec_baro_probe()
162 	channel->scan_index = 0;  in cros_ec_baro_probe()
163 	channel->ext_info = cros_ec_sensors_ext_info;  in cros_ec_baro_probe()
164 	channel->scan_type.sign = 'u';  in cros_ec_baro_probe()
167 	switch (state->core.type) {  in cros_ec_baro_probe()
169 		channel->type = IIO_PRESSURE;  in cros_ec_baro_probe()
173 		return -EINVAL;  in cros_ec_baro_probe()
178 	channel->type = IIO_TIMESTAMP;  in cros_ec_baro_probe()
179 	channel->channel = -1;  in cros_ec_baro_probe()
180 	channel->scan_index = 1;  in cros_ec_baro_probe()
181 	channel->scan_type.sign = 's';  in cros_ec_baro_probe()
182 	channel->scan_type.realbits = 64;  in cros_ec_baro_probe()
183 	channel->scan_type.storagebits = 64;  in cros_ec_baro_probe()
185 	indio_dev->channels = state->channels;  in cros_ec_baro_probe()
186 	indio_dev->num_channels = CROS_EC_BARO_MAX_CHANNELS;  in cros_ec_baro_probe()
188 	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;  in cros_ec_baro_probe()
195 		.name = "cros-ec-baro",
203 		.name	= "cros-ec-baro",
211 MODULE_DESCRIPTION("ChromeOS EC barometer sensor driver");