4  * SPDX-License-Identifier: Apache-2.0
25 	struct ak8975_data *drv_data = dev->data;  in ak8975_sample_fetch()
26 	const struct ak8975_config *drv_config = dev->config;  in ak8975_sample_fetch()
31 	if (i2c_reg_write_byte_dt(&drv_config->i2c, AK8975_REG_CNTL, AK8975_MODE_MEASURE) < 0) {  in ak8975_sample_fetch()
33 		return -EIO;  in ak8975_sample_fetch()
38 	if (i2c_burst_read_dt(&drv_config->i2c, AK8975_REG_DATA_START, buf, 6) < 0) {  in ak8975_sample_fetch()
40 		return -EIO;  in ak8975_sample_fetch()
43 	drv_data->x_sample = sys_le16_to_cpu(buf[0] | (buf[1] << 8));  in ak8975_sample_fetch()
44 	drv_data->y_sample = sys_le16_to_cpu(buf[2] | (buf[3] << 8));  in ak8975_sample_fetch()
45 	drv_data->z_sample = sys_le16_to_cpu(buf[4] | (buf[5] << 8));  in ak8975_sample_fetch()
57 	val->val1 = conv_val / 1000000;  in ak8975_convert()
58 	val->val2 = conv_val % 1000000;  in ak8975_convert()
65 	struct ak8975_data *drv_data = dev->data;  in ak8975_channel_get()
73 		ak8975_convert(val, drv_data->x_sample, drv_data->x_adj);  in ak8975_channel_get()
74 		ak8975_convert(val + 1, drv_data->y_sample, drv_data->y_adj);  in ak8975_channel_get()
75 		ak8975_convert(val + 2, drv_data->z_sample, drv_data->z_adj);  in ak8975_channel_get()
77 		ak8975_convert(val, drv_data->x_sample, drv_data->x_adj);  in ak8975_channel_get()
79 		ak8975_convert(val, drv_data->y_sample, drv_data->y_adj);  in ak8975_channel_get()
81 		ak8975_convert(val, drv_data->z_sample, drv_data->z_adj);  in ak8975_channel_get()
83 		return -ENOTSUP;  in ak8975_channel_get()
96 	struct ak8975_data *drv_data = dev->data;  in ak8975_read_adjustment_data()
97 	const struct ak8975_config *drv_config = dev->config;  in ak8975_read_adjustment_data()
100 	if (i2c_reg_write_byte_dt(&drv_config->i2c, AK8975_REG_CNTL, AK8975_MODE_FUSE_ACCESS) < 0) {  in ak8975_read_adjustment_data()
101 		LOG_ERR("Failed to set chip in fuse access mode.");  in ak8975_read_adjustment_data()
102 		return -EIO;  in ak8975_read_adjustment_data()
105 	if (i2c_burst_read_dt(&drv_config->i2c, AK8975_REG_ADJ_DATA_START, buf, 3) < 0) {  in ak8975_read_adjustment_data()
107 		return -EIO;  in ak8975_read_adjustment_data()
110 	drv_data->x_adj = buf[0];  in ak8975_read_adjustment_data()
111 	drv_data->y_adj = buf[1];  in ak8975_read_adjustment_data()
112 	drv_data->z_adj = buf[2];  in ak8975_read_adjustment_data()
119 	const struct ak8975_config *drv_config = dev->config;  in ak8975_init()
120 	uint8_t id;  in ak8975_init()  local
122 	if (!device_is_ready(drv_config->i2c.bus)) {  in ak8975_init()
124 		return -ENODEV;  in ak8975_init()
127 	/* check chip ID */  in ak8975_init()
128 	if (i2c_reg_read_byte_dt(&drv_config->i2c, AK8975_REG_CHIP_ID, &id) < 0) {  in ak8975_init()
129 		LOG_ERR("Failed to read chip ID.");  in ak8975_init()
130 		return -EIO;  in ak8975_init()
133 	if (id != AK8975_CHIP_ID) {  in ak8975_init()
134 		LOG_ERR("Invalid chip ID.");  in ak8975_init()
135 		return -EINVAL;  in ak8975_init()
139 		return -EIO;  in ak8975_init()