iio/magnetometer/mag3110.c

69 	int ret, tries = 150;
73 		ret = i2c_smbus_write_byte_data(data->client, MAG3110_CTRL_REG1,
75 		if (ret < 0)
76 			return ret;
80 		ret = i2c_smbus_read_byte_data(data->client, MAG3110_STATUS);
81 		if (ret < 0)
82 			return ret;
84 		if ((ret & MAG3110_STATUS_DRDY) == MAG3110_STATUS_DRDY)
103 	int ret;
106 	ret = mag3110_request(data);
107 	if (ret < 0) {
109 		return ret;
111 	ret = i2c_smbus_read_i2c_block_data(data->client,
115 	return ret;
165 	int ret, i = data->ctrl_reg1 >> MAG3110_CTRL_DR_SHIFT;
168 		ret = 1000 / mag3110_samp_freq[i][0];
170 		ret = 1000;
172 	return ret == 0 ? 1 : ret;
183 	int ret, tries = 30;
191 		ret = i2c_smbus_read_byte_data(data->client, MAG3110_SYSMOD);
192 		if (ret < 0) {
194 			return ret;
197 		if ((ret & MAG3110_SYSMOD_MODE_MASK) == 0)
231 	int ret;
238 		ret = is_active;
244 		ret = mag3110_standby(data);
245 		if (ret < 0)
253 	ret = mag3110_wait_standby(data);
254 	if (ret < 0)
257 	ret = i2c_smbus_write_byte_data(data->client, reg, val);
258 	if (ret < 0)
262 		ret = mag3110_active(data);
263 		if (ret < 0)
267 	ret = 0;
271 	return ret;
280 	int i, ret;
284 		ret = iio_device_claim_direct_mode(indio_dev);
285 		if (ret)
286 			return ret;
290 			ret = mag3110_read(data, buffer);
291 			if (ret < 0)
296 			ret = IIO_VAL_INT;
300 			ret = mag3110_request(data);
301 			if (ret < 0) {
305 			ret = i2c_smbus_read_byte_data(data->client,
308 			if (ret < 0)
310 			*val = sign_extend32(ret,
312 			ret = IIO_VAL_INT;
315 			ret = -EINVAL;
319 		return ret;
339 		ret = i2c_smbus_read_word_swapped(data->client,
341 		if (ret < 0)
342 			return ret;
343 		*val = sign_extend32(ret >> 1, 14);
354 	int rate, ret;
356 	ret = iio_device_claim_direct_mode(indio_dev);
357 	if (ret)
358 		return ret;
364 			ret = -EINVAL;
374 		ret = mag3110_change_config(data, MAG3110_CTRL_REG1,
379 			ret = -EINVAL;
382 		ret = i2c_smbus_write_word_swapped(data->client,
386 		ret = -EINVAL;
390 	return ret;
398 	int ret;
400 	ret = mag3110_read(data, data->scan.channels);
401 	if (ret < 0)
405 		ret = i2c_smbus_read_byte_data(data->client,
407 		if (ret < 0)
409 		data->scan.temperature = ret;
477 	int ret;
495 	ret = regulator_enable(data->vdd_reg);
496 	if (ret) {
498 		return ret;
501 	ret = regulator_enable(data->vddio_reg);
502 	if (ret) {
507 	ret = i2c_smbus_read_byte_data(client, MAG3110_WHO_AM_I);
508 	if (ret < 0)
510 	if (ret != MAG3110_DEVICE_ID) {
511 		ret = -ENODEV;
531 	ret = mag3110_change_config(data, MAG3110_CTRL_REG1, data->ctrl_reg1);
532 	if (ret < 0)
535 	ret = i2c_smbus_write_byte_data(client, MAG3110_CTRL_REG2,
537 	if (ret < 0)
540 	ret = iio_triggered_buffer_setup(indio_dev, NULL,
542 	if (ret < 0)
545 	ret = iio_device_register(indio_dev);
546 	if (ret < 0)
559 	return ret;
578 	int ret;
580 	ret = mag3110_standby(iio_priv(i2c_get_clientdata(
582 	if (ret)
583 		return ret;
585 	ret = regulator_disable(data->vddio_reg);
586 	if (ret) {
588 		return ret;
591 	ret = regulator_disable(data->vdd_reg);
592 	if (ret) {
594 		return ret;
604 	int ret;
606 	ret = regulator_enable(data->vdd_reg);
607 	if (ret) {
609 		return ret;
612 	ret = regulator_enable(data->vddio_reg);
613 	if (ret) {
616 		return ret;