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
243 	mutex_lock(&isl29501->lock);  in isl29501_register_write()
245 		ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_register_write()
251 	ret = i2c_smbus_write_byte_data(isl29501->client, reg->lsb, value);  in isl29501_register_write()
254 	mutex_unlock(&isl29501->lock);  in isl29501_register_write()
263 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_read_ext()  local
271 		ret = isl29501_register_read(isl29501, reg, &gain);  in isl29501_read_ext()
281 		ret = isl29501_register_read(isl29501, REG_PHASE_EXP, &exp);  in isl29501_read_ext()
285 		ret = isl29501_register_read(isl29501, reg, &coeff);  in isl29501_read_ext()
298 static int isl29501_set_shadow_coeff(struct isl29501_private *isl29501,  in isl29501_set_shadow_coeff()  argument
320 	isl29501->shadow_coeffs[coeff] = val;  in isl29501_set_shadow_coeff()
325 static int isl29501_write_coeff(struct isl29501_private *isl29501,  in isl29501_write_coeff()  argument
348 	return isl29501_register_write(isl29501, reg, val);  in isl29501_write_coeff()
385 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_write_ext()  local
401 		ret = isl29501_register_write(isl29501, reg, val);  in isl29501_write_ext()
415 		ret = isl29501_set_shadow_coeff(isl29501, reg, val);  in isl29501_write_ext()
427 			corr = isl29501->shadow_coeffs[i];  in isl29501_write_ext()
431 			dev_dbg(&isl29501->client->dev,  in isl29501_write_ext()
446 			corr = isl29501->shadow_coeffs[i];  in isl29501_write_ext()
452 			ret = isl29501_write_coeff(isl29501, i, mantissa);  in isl29501_write_ext()
457 		ret = isl29501_register_write(isl29501, REG_PHASE_EXP, max_exp);  in isl29501_write_ext()
539 static int isl29501_reset_registers(struct isl29501_private *isl29501)  in isl29501_reset_registers()  argument
543 	ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_reset_registers()
547 		dev_err(&isl29501->client->dev,  in isl29501_reset_registers()
552 	ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_reset_registers()
556 		dev_err(&isl29501->client->dev,  in isl29501_reset_registers()
562 static int isl29501_begin_acquisition(struct isl29501_private *isl29501)  in isl29501_begin_acquisition()  argument
566 	ret = i2c_smbus_write_byte_data(isl29501->client,  in isl29501_begin_acquisition()
570 		dev_err(&isl29501->client->dev,  in isl29501_begin_acquisition()
612 static int isl29501_get_raw(struct isl29501_private *isl29501,  in isl29501_get_raw()  argument
620 		ret = isl29501_register_read(isl29501, REG_DISTANCE, raw);  in isl29501_get_raw()
626 		ret = isl29501_register_read(isl29501,  in isl29501_get_raw()
634 		ret = isl29501_register_read(isl29501, REG_PHASE, raw);  in isl29501_get_raw()
640 		ret = isl29501_register_read(isl29501, REG_EMITTER_DAC, raw);  in isl29501_get_raw()
646 		ret = isl29501_register_read(isl29501, REG_TEMPERATURE, raw);  in isl29501_get_raw()
656 static int isl29501_get_scale(struct isl29501_private *isl29501,  in isl29501_get_scale()  argument
683 		ret = isl29501_register_read(isl29501,  in isl29501_get_scale()
713 static int isl29501_get_calibbias(struct isl29501_private *isl29501,  in isl29501_get_calibbias()  argument
719 		return isl29501_register_read(isl29501,  in isl29501_get_calibbias()
723 		return isl29501_register_read(isl29501,  in isl29501_get_calibbias()
731 static int isl29501_get_inttime(struct isl29501_private *isl29501,  in isl29501_get_inttime()  argument
737 	ret = isl29501_register_read(isl29501, REG_INT_TIME, &inttime);  in isl29501_get_inttime()
750 static int isl29501_get_freq(struct isl29501_private *isl29501,  in isl29501_get_freq()  argument
758 	ret = isl29501_register_read(isl29501, REG_SAMPLE_TIME, &sample_time);  in isl29501_get_freq()
778 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_read_raw()  local
782 		return isl29501_get_raw(isl29501, chan, val);  in isl29501_read_raw()
784 		return isl29501_get_scale(isl29501, chan, val, val2);  in isl29501_read_raw()
786 		return isl29501_get_inttime(isl29501, val, val2);  in isl29501_read_raw()
788 		return isl29501_get_freq(isl29501, val, val2);  in isl29501_read_raw()
790 		return isl29501_get_calibbias(isl29501, chan, val);  in isl29501_read_raw()
796 static int isl29501_set_raw(struct isl29501_private *isl29501,  in isl29501_set_raw()  argument
802 		return isl29501_register_write(isl29501, REG_EMITTER_DAC, raw);  in isl29501_set_raw()
808 static int isl29501_set_inttime(struct isl29501_private *isl29501,  in isl29501_set_inttime()  argument
816 			return isl29501_register_write(isl29501,  in isl29501_set_inttime()
825 static int isl29501_set_scale(struct isl29501_private *isl29501,  in isl29501_set_scale()  argument
837 			return isl29501_register_write(isl29501,  in isl29501_set_scale()
846 static int isl29501_set_calibbias(struct isl29501_private *isl29501,  in isl29501_set_calibbias()  argument
852 		return isl29501_register_write(isl29501,  in isl29501_set_calibbias()
856 		return isl29501_register_write(isl29501,  in isl29501_set_calibbias()
864 static int isl29501_set_freq(struct isl29501_private *isl29501,  in isl29501_set_freq()  argument
880 	return isl29501_register_write(isl29501, REG_SAMPLE_TIME, sample_time);  in isl29501_set_freq()
887 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_write_raw()  local
891 		return isl29501_set_raw(isl29501, chan, val);  in isl29501_write_raw()
893 		return isl29501_set_inttime(isl29501, val, val2);  in isl29501_write_raw()
895 		return isl29501_set_freq(isl29501, val, val2);  in isl29501_write_raw()
897 		return isl29501_set_scale(isl29501, chan, val, val2);  in isl29501_write_raw()
899 		return isl29501_set_calibbias(isl29501, chan, val);  in isl29501_write_raw()
911 static int isl29501_init_chip(struct isl29501_private *isl29501)  in isl29501_init_chip()  argument
915 	ret = i2c_smbus_read_byte_data(isl29501->client, ISL29501_DEVICE_ID);  in isl29501_init_chip()
917 		dev_err(&isl29501->client->dev, "Error reading device id\n");  in isl29501_init_chip()
922 		dev_err(&isl29501->client->dev,  in isl29501_init_chip()
928 	ret = isl29501_reset_registers(isl29501);  in isl29501_init_chip()
932 	return isl29501_begin_acquisition(isl29501);  in isl29501_init_chip()
939 	struct isl29501_private *isl29501 = iio_priv(indio_dev);  in isl29501_trigger_handler()  local
944 		isl29501_register_read(isl29501, REG_DISTANCE, buffer);  in isl29501_trigger_handler()
956 	struct isl29501_private *isl29501;  in isl29501_probe()  local
959 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*isl29501));  in isl29501_probe()
963 	isl29501 = iio_priv(indio_dev);  in isl29501_probe()
966 	isl29501->client = client;  in isl29501_probe()
968 	mutex_init(&isl29501->lock);  in isl29501_probe()
970 	ret = isl29501_init_chip(isl29501);  in isl29501_probe()