1 // SPDX-License-Identifier: GPL-2.0
3  * cros_ec_light_prox - Driver for light and prox sensors behing CrosEC.
24  * We only represent one entry for light or proximity. EC is merging different
25  * light sensors to return the what the eye would see. For proximity, we
26  * currently support only one light source.
46 	int idx = chan->scan_index;  in cros_ec_light_prox_read()
48 	mutex_lock(&st->core.cmd_lock);  in cros_ec_light_prox_read()
52 		if (chan->type == IIO_PROXIMITY) {  in cros_ec_light_prox_read()
60 			ret = -EINVAL;  in cros_ec_light_prox_read()
64 		if (chan->type == IIO_LIGHT) {  in cros_ec_light_prox_read()
70 			 * The data coming from the light sensor is  in cros_ec_light_prox_read()
71 			 * pre-processed and represents the ambient light  in cros_ec_light_prox_read()
77 			ret = -EINVAL;  in cros_ec_light_prox_read()
81 		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_OFFSET;  in cros_ec_light_prox_read()
82 		st->core.param.sensor_offset.flags = 0;  in cros_ec_light_prox_read()
84 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);  in cros_ec_light_prox_read()
89 		st->core.calib[0].offset =  in cros_ec_light_prox_read()
90 			st->core.resp->sensor_offset.offset[0];  in cros_ec_light_prox_read()
92 		*val = st->core.calib[idx].offset;  in cros_ec_light_prox_read()
101 		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;  in cros_ec_light_prox_read()
102 		st->core.param.sensor_range.data = EC_MOTION_SENSE_NO_VALUE;  in cros_ec_light_prox_read()
104 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);  in cros_ec_light_prox_read()
108 		val64 = st->core.resp->sensor_range.ret;  in cros_ec_light_prox_read()
114 		ret = cros_ec_sensors_core_read(&st->core, chan, val, val2,  in cros_ec_light_prox_read()
119 	mutex_unlock(&st->core.cmd_lock);  in cros_ec_light_prox_read()
130 	int idx = chan->scan_index;  in cros_ec_light_prox_write()
132 	mutex_lock(&st->core.cmd_lock);  in cros_ec_light_prox_write()
136 		st->core.calib[idx].offset = val;  in cros_ec_light_prox_write()
138 		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_OFFSET;  in cros_ec_light_prox_write()
139 		st->core.param.sensor_offset.flags = MOTION_SENSE_SET_OFFSET;  in cros_ec_light_prox_write()
140 		st->core.param.sensor_offset.offset[0] =  in cros_ec_light_prox_write()
141 			st->core.calib[0].offset;  in cros_ec_light_prox_write()
142 		st->core.param.sensor_offset.temp =  in cros_ec_light_prox_write()
144 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);  in cros_ec_light_prox_write()
147 		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;  in cros_ec_light_prox_write()
148 		st->core.curr_range = (val << 16) | (val2 / 100);  in cros_ec_light_prox_write()
149 		st->core.param.sensor_range.data = st->core.curr_range;  in cros_ec_light_prox_write()
150 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);  in cros_ec_light_prox_write()
152 			st->core.range_updated = true;  in cros_ec_light_prox_write()
155 		ret = cros_ec_sensors_core_write(&st->core, chan, val, val2,  in cros_ec_light_prox_write()
160 	mutex_unlock(&st->core.cmd_lock);  in cros_ec_light_prox_write()
173 	struct device *dev = &pdev->dev;  in cros_ec_light_prox_probe()
181 		return -ENOMEM;  in cros_ec_light_prox_probe()
190 	indio_dev->info = &cros_ec_light_prox_info;  in cros_ec_light_prox_probe()
192 	state->core.type = state->core.resp->info.type;  in cros_ec_light_prox_probe()
193 	state->core.loc = state->core.resp->info.location;  in cros_ec_light_prox_probe()
194 	channel = state->channels;  in cros_ec_light_prox_probe()
197 	channel->info_mask_shared_by_all =  in cros_ec_light_prox_probe()
199 	channel->info_mask_shared_by_all_available =  in cros_ec_light_prox_probe()
201 	channel->scan_type.realbits = CROS_EC_SENSOR_BITS;  in cros_ec_light_prox_probe()
202 	channel->scan_type.storagebits = CROS_EC_SENSOR_BITS;  in cros_ec_light_prox_probe()
203 	channel->scan_type.shift = 0;  in cros_ec_light_prox_probe()
204 	channel->scan_index = 0;  in cros_ec_light_prox_probe()
205 	channel->ext_info = cros_ec_sensors_ext_info;  in cros_ec_light_prox_probe()
206 	channel->scan_type.sign = 'u';  in cros_ec_light_prox_probe()
208 	/* Sensor specific */  in cros_ec_light_prox_probe()
209 	switch (state->core.type) {  in cros_ec_light_prox_probe()
211 		channel->type = IIO_LIGHT;  in cros_ec_light_prox_probe()
212 		channel->info_mask_separate =  in cros_ec_light_prox_probe()
218 		channel->type = IIO_PROXIMITY;  in cros_ec_light_prox_probe()
219 		channel->info_mask_separate =  in cros_ec_light_prox_probe()
225 		dev_warn(dev, "Unknown motion sensor\n");  in cros_ec_light_prox_probe()
226 		return -EINVAL;  in cros_ec_light_prox_probe()
231 	channel->type = IIO_TIMESTAMP;  in cros_ec_light_prox_probe()
232 	channel->channel = -1;  in cros_ec_light_prox_probe()
233 	channel->scan_index = 1;  in cros_ec_light_prox_probe()
234 	channel->scan_type.sign = 's';  in cros_ec_light_prox_probe()
235 	channel->scan_type.realbits = 64;  in cros_ec_light_prox_probe()
236 	channel->scan_type.storagebits = 64;  in cros_ec_light_prox_probe()
238 	indio_dev->channels = state->channels;  in cros_ec_light_prox_probe()
240 	indio_dev->num_channels = CROS_EC_LIGHT_PROX_MAX_CHANNELS;  in cros_ec_light_prox_probe()
242 	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;  in cros_ec_light_prox_probe()
249 		.name = "cros-ec-prox",
252 		.name = "cros-ec-light",
260 		.name	= "cros-ec-light-prox",
268 MODULE_DESCRIPTION("ChromeOS EC light/proximity sensors driver");