iio/adc/nau7802.c

114 	int ret;
119 	ret = i2c_smbus_read_byte_data(st->client, NAU7802_REG_CTRL1);
120 	if (ret < 0)
122 	ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_CTRL1,
123 					(ret & (~NAU7802_CTRL1_GAINS_BITS)) |
129 	return ret;
165 	int ret;
167 	ret = i2c_smbus_read_byte_data(st->client, NAU7802_REG_PUCTRL);
168 	if (ret < 0)
169 		return ret;
170 	ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_PUCTRL,
171 				ret | NAU7802_PUCTRL_CS_BIT);
173 	return ret;
210 	int ret;
218 	ret = nau7802_read_conversion(st);
219 	if (ret < 0)
223 	ret = wait_for_completion_interruptible_timeout(&st->value_ok,
225 	if (ret == 0)
226 		ret = -ETIMEDOUT;
228 	if (ret < 0)
240 	return ret;
248 	int ret;
253 	ret = nau7802_read_conversion(st);
254 	if (ret < 0)
255 		return ret;
263 		ret = i2c_smbus_read_byte_data(st->client, NAU7802_REG_PUCTRL);
264 		if (ret < 0)
265 			return ret;
267 		while (!(ret & NAU7802_PUCTRL_CR_BIT)) {
272 			ret = i2c_smbus_read_byte_data(st->client,
274 			if (ret < 0)
275 				return ret;
278 		ret = nau7802_read_conversion(st);
279 		if (ret < 0)
280 			return ret;
295 	int ret;
305 		ret = i2c_smbus_read_byte_data(st->client, NAU7802_REG_CTRL2);
306 		if (ret < 0) {
308 			return ret;
311 		if (((ret & NAU7802_CTRL2_CHS_BIT) && !chan->channel) ||
312 				(!(ret & NAU7802_CTRL2_CHS_BIT) &&
315 			ret = i2c_smbus_write_byte_data(st->client,
320 			if (ret < 0) {
322 				return ret;
327 			ret = nau7802_read_irq(indio_dev, chan, val);
329 			ret = nau7802_read_poll(indio_dev, chan, val);
332 		return ret;
335 		ret = i2c_smbus_read_byte_data(st->client, NAU7802_REG_CTRL1);
336 		if (ret < 0)
337 			return ret;
344 		*val2 = 23 + (ret & NAU7802_CTRL1_GAINS_BITS);
365 	int i, ret;
381 				ret = i2c_smbus_write_byte_data(st->client,
385 				return ret;
415 	int i, ret;
432 	ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_PUCTRL,
434 	if (ret < 0)
435 		return ret;
438 	ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_PUCTRL,
440 	if (ret < 0)
441 		return ret;
448 	ret = i2c_smbus_read_byte_data(st->client, NAU7802_REG_PUCTRL);
449 	if (ret < 0)
450 		return ret;
451 	if (!(ret & NAU7802_PUCTRL_PUR_BIT))
452 		return ret;
462 	ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_PUCTRL, data);
463 	if (ret < 0)
464 		return ret;
465 	ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_ADC_CTRL, 0x30);
466 	if (ret < 0)
467 		return ret;
471 		ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_CTRL1,
473 		if (ret < 0)
474 			return ret;
490 		ret = devm_request_threaded_irq(&client->dev, client->irq,
497 		if (ret) {
518 		ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_CTRL2,
520 		if (ret)
521 			return ret;