197 static int isl29501_register_read(struct isl29501_private *isl29501,  in isl29501_register_read()  argument
205 	mutex_lock(&isl29501->lock);  in isl29501_register_read()
207 		ret = i2c_smbus_read_byte_data(isl29501->client, reg->msb);  in isl29501_register_read()
214 		ret = i2c_smbus_read_byte_data(isl29501->client, reg->lsb);  in isl29501_register_read()
219 	mutex_unlock(&isl29501->lock);  in isl29501_register_read()
225 	mutex_unlock(&isl29501->lock);  in isl29501_register_read()
230 static u32 isl29501_register_write(struct isl29501_private *isl29501,  in isl29501_register_write()  argument
251 	mutex_lock(&isl29501->lock);  in isl29501_register_write()
253 		ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_register_write()
259 	ret = i2c_smbus_write_byte_data(isl29501->client, reg->lsb, lsb);  in isl29501_register_write()
262 	mutex_unlock(&isl29501->lock);  in isl29501_register_write()
271 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_read_ext()  local
279 		ret = isl29501_register_read(isl29501, reg, &gain);  in isl29501_read_ext()
289 		ret = isl29501_register_read(isl29501, REG_PHASE_EXP, &exp);  in isl29501_read_ext()
293 		ret = isl29501_register_read(isl29501, reg, &coeff);  in isl29501_read_ext()
306 static int isl29501_set_shadow_coeff(struct isl29501_private *isl29501,  in isl29501_set_shadow_coeff()  argument
328 	isl29501->shadow_coeffs[coeff] = val;  in isl29501_set_shadow_coeff()
333 static int isl29501_write_coeff(struct isl29501_private *isl29501,  in isl29501_write_coeff()  argument
356 	return isl29501_register_write(isl29501, reg, val);  in isl29501_write_coeff()
393 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_write_ext()  local
409 		ret = isl29501_register_write(isl29501, reg, val);  in isl29501_write_ext()
423 		ret = isl29501_set_shadow_coeff(isl29501, reg, val);  in isl29501_write_ext()
435 			corr = isl29501->shadow_coeffs[i];  in isl29501_write_ext()
439 			dev_dbg(&isl29501->client->dev,  in isl29501_write_ext()
454 			corr = isl29501->shadow_coeffs[i];  in isl29501_write_ext()
460 			ret = isl29501_write_coeff(isl29501, i, mantissa);  in isl29501_write_ext()
465 		ret = isl29501_register_write(isl29501, REG_PHASE_EXP, max_exp);  in isl29501_write_ext()
547 static int isl29501_reset_registers(struct isl29501_private *isl29501)  in isl29501_reset_registers()  argument
551 	ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_reset_registers()
555 		dev_err(&isl29501->client->dev,  in isl29501_reset_registers()
560 	ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_reset_registers()
564 		dev_err(&isl29501->client->dev,  in isl29501_reset_registers()
570 static int isl29501_begin_acquisition(struct isl29501_private *isl29501)  in isl29501_begin_acquisition()  argument
574 	ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_begin_acquisition()
578 		dev_err(&isl29501->client->dev,  in isl29501_begin_acquisition()
620 static int isl29501_get_raw(struct isl29501_private *isl29501,  in isl29501_get_raw()  argument
628 		ret = isl29501_register_read(isl29501, REG_DISTANCE, raw);  in isl29501_get_raw()
634 		ret = isl29501_register_read(isl29501,  in isl29501_get_raw()
642 		ret = isl29501_register_read(isl29501, REG_PHASE, raw);  in isl29501_get_raw()
648 		ret = isl29501_register_read(isl29501, REG_EMITTER_DAC, raw);  in isl29501_get_raw()
654 		ret = isl29501_register_read(isl29501, REG_TEMPERATURE, raw);  in isl29501_get_raw()
664 static int isl29501_get_scale(struct isl29501_private *isl29501,  in isl29501_get_scale()  argument
691 		ret = isl29501_register_read(isl29501,  in isl29501_get_scale()
721 static int isl29501_get_calibbias(struct isl29501_private *isl29501,  in isl29501_get_calibbias()  argument
727 		return isl29501_register_read(isl29501,  in isl29501_get_calibbias()
731 		return isl29501_register_read(isl29501,  in isl29501_get_calibbias()
739 static int isl29501_get_inttime(struct isl29501_private *isl29501,  in isl29501_get_inttime()  argument
745 	ret = isl29501_register_read(isl29501, REG_INT_TIME, &inttime);  in isl29501_get_inttime()
758 static int isl29501_get_freq(struct isl29501_private *isl29501,  in isl29501_get_freq()  argument
766 	ret = isl29501_register_read(isl29501, REG_SAMPLE_TIME, &sample_time);  in isl29501_get_freq()
786 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_read_raw()  local
790 		return isl29501_get_raw(isl29501, chan, val);  in isl29501_read_raw()
792 		return isl29501_get_scale(isl29501, chan, val, val2);  in isl29501_read_raw()
794 		return isl29501_get_inttime(isl29501, val, val2);  in isl29501_read_raw()
796 		return isl29501_get_freq(isl29501, val, val2);  in isl29501_read_raw()
798 		return isl29501_get_calibbias(isl29501, chan, val);  in isl29501_read_raw()
804 static int isl29501_set_raw(struct isl29501_private *isl29501,  in isl29501_set_raw()  argument
810 		return isl29501_register_write(isl29501, REG_EMITTER_DAC, raw);  in isl29501_set_raw()
816 static int isl29501_set_inttime(struct isl29501_private *isl29501,  in isl29501_set_inttime()  argument
824 			return isl29501_register_write(isl29501,  in isl29501_set_inttime()
833 static int isl29501_set_scale(struct isl29501_private *isl29501,  in isl29501_set_scale()  argument
845 			return isl29501_register_write(isl29501,  in isl29501_set_scale()
854 static int isl29501_set_calibbias(struct isl29501_private *isl29501,  in isl29501_set_calibbias()  argument
860 		return isl29501_register_write(isl29501,  in isl29501_set_calibbias()
864 		return isl29501_register_write(isl29501,  in isl29501_set_calibbias()
872 static int isl29501_set_freq(struct isl29501_private *isl29501,  in isl29501_set_freq()  argument
888 	return isl29501_register_write(isl29501, REG_SAMPLE_TIME, sample_time);  in isl29501_set_freq()
895 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_write_raw()  local
899 		return isl29501_set_raw(isl29501, chan, val);  in isl29501_write_raw()
901 		return isl29501_set_inttime(isl29501, val, val2);  in isl29501_write_raw()
903 		return isl29501_set_freq(isl29501, val, val2);  in isl29501_write_raw()
905 		return isl29501_set_scale(isl29501, chan, val, val2);  in isl29501_write_raw()
907 		return isl29501_set_calibbias(isl29501, chan, val);  in isl29501_write_raw()
919 static int isl29501_init_chip(struct isl29501_private *isl29501)  in isl29501_init_chip()  argument
923 	ret = i2c_smbus_read_byte_data(isl29501->client, ISL29501_DEVICE_ID);  in isl29501_init_chip()
925 		dev_err(&isl29501->client->dev, "Error reading device id\n");  in isl29501_init_chip()
930 		dev_err(&isl29501->client->dev,  in isl29501_init_chip()
936 	ret = isl29501_reset_registers(isl29501);  in isl29501_init_chip()
940 	return isl29501_begin_acquisition(isl29501);  in isl29501_init_chip()
947 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_trigger_handler()  local
952 		isl29501_register_read(isl29501, REG_DISTANCE, buffer);  in isl29501_trigger_handler()
964 	struct isl29501_private *isl29501;  in isl29501_probe()  local
967 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*isl29501));  in isl29501_probe()
971 	isl29501 = iio_priv(indio_dev);  in isl29501_probe()
974 	isl29501->client = client;  in isl29501_probe()
976 	mutex_init(&isl29501->lock);  in isl29501_probe()
978 	ret = isl29501_init_chip(isl29501);  in isl29501_probe()