4  * SPDX-License-Identifier: Apache-2.0
21 	struct p3t1755_data *data = dev->data;  in p3t1755_i3c_read_reg()
23 	return i3c_burst_read(data->i3c_dev, reg, value, len);  in p3t1755_i3c_read_reg()
28 	struct p3t1755_data *data = dev->data;  in p3t1755_i3c_write_reg()
30 	return i3c_burst_write(data->i3c_dev, reg, byte, len);  in p3t1755_i3c_write_reg()
37 	const struct p3t1755_config *config = dev->config;  in p3t1755_i2c_read_reg()
39 	return i2c_burst_read_dt(&config->bus_cfg.i2c, reg, value, len);  in p3t1755_i2c_read_reg()
44 	const struct p3t1755_config *config = dev->config;  in p3t1755_i2c_write_reg()
46 	return i2c_burst_write_dt(&config->bus_cfg.i2c, reg, byte, len);  in p3t1755_i2c_write_reg()
52 	const struct p3t1755_config *config = dev->config;  in p3t1755_sample_fetch()
53 	struct p3t1755_data *data = dev->data;  in p3t1755_sample_fetch()
58 		return -ENOTSUP;  in p3t1755_sample_fetch()
61 	if (config->oneshot_mode) {  in p3t1755_sample_fetch()
62 		data->config_reg |= P3T1755_CONFIG_REG_OS;  in p3t1755_sample_fetch()
63 		config->ops.write(dev, P3T1755_CONFIG_REG, &data->config_reg, 1);  in p3t1755_sample_fetch()
64 		/* Maximum one-shot conversion time per specification is 12ms */  in p3t1755_sample_fetch()
68 	int status = config->ops.read(dev, P3T1755_TEMPERATURE_REG, raw_temp, 2);  in p3t1755_sample_fetch()
72 		return -ENOTSUP;  in p3t1755_sample_fetch()
75 	/* Byte 1 contains the MSByte and Byte 2 contains the LSByte, we need to swap the 2 bytes.  in p3t1755_sample_fetch()
78 	data->sample = (((uint16_t)raw_temp[0] << 8U) | (uint16_t)raw_temp[1]) >>  in p3t1755_sample_fetch()
90 		/* Convert 12-bit 2s complement to signed negative  in p3t1755_convert_to_signed()
93 		rv = -(1U + (rv ^ P3T1755_TEMPERATURE_ABS_MASK));  in p3t1755_convert_to_signed()
101 	struct p3t1755_data *data = dev->data;  in p3t1755_channel_get()
105 		return -ENOTSUP;  in p3t1755_channel_get()
108 	raw_val = p3t1755_convert_to_signed(data->sample);  in p3t1755_channel_get()
120 	const struct p3t1755_config *config = dev->config;  in p3t1755_init()
121 	struct p3t1755_data *data = dev->data;  in p3t1755_init()
124 	if (config->i3c.bus != NULL) {  in p3t1755_init()
125 		data->i3c_dev = i3c_device_find(config->i3c.bus, &config->i3c.dev_id);  in p3t1755_init()
126 		if (data->i3c_dev == NULL) {  in p3t1755_init()
128 			return -ENODEV;  in p3t1755_init()
133 	if (config->inst_on_bus == P3T1755_BUS_I2C) {  in p3t1755_init()
134 		if (!i2c_is_ready_dt(&config->bus_cfg.i2c)) {  in p3t1755_init()
136 			return -ENODEV;  in p3t1755_init()
141 	if (config->oneshot_mode) {  in p3t1755_init()
142 		config->ops.read(dev, P3T1755_CONFIG_REG, &data->config_reg, 1);  in p3t1755_init()
144 		 * one-shot temperature measurement.  in p3t1755_init()
146 		data->config_reg |= P3T1755_CONFIG_REG_SD;  in p3t1755_init()
147 		config->ops.write(dev, P3T1755_CONFIG_REG, &data->config_reg, 1);  in p3t1755_init()