Lines Matching refs:data

61 static int max31865_read(struct max31865_data *data, u8 reg,
64 	return spi_write_then_read(data->spi, &reg, 1, data->buf, read_size);
67 static int max31865_write(struct max31865_data *data, size_t len)
69 	return spi_write(data->spi, data->buf, len);
72 static int enable_bias(struct max31865_data *data)
77 	ret = max31865_read(data, MAX31865_CFG_REG, 1);
81 	cfg = data->buf[0];
83 	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
84 	data->buf[1] = cfg | MAX31865_CFG_VBIAS;
86 	return max31865_write(data, 2);
89 static int disable_bias(struct max31865_data *data)
94 	ret = max31865_read(data, MAX31865_CFG_REG, 1);
98 	cfg = data->buf[0];
101 	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
102 	data->buf[1] = cfg;
104 	return max31865_write(data, 2);
107 static int max31865_rtd_read(struct max31865_data *data, int *val)
113 	ret = enable_bias(data);
120 	ret = max31865_read(data, MAX31865_CFG_REG, 1);
124 	reg = data->buf[0];
126 	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
127 	data->buf[1] = reg;
129 	ret = max31865_write(data, 2);
133 	if (data->filter_50hz) {
141 	ret = max31865_read(data, MAX31865_RTD_MSB, 2);
145 	*val = get_unaligned_be16(&data->buf) >> 1;
147 	return disable_bias(data);
154 	struct max31865_data *data = iio_priv(indio_dev);
159 		mutex_lock(&data->lock);
160 		ret = max31865_rtd_read(data, val);
161 		mutex_unlock(&data->lock);
175 static int max31865_init(struct max31865_data *data)
180 	ret = max31865_read(data, MAX31865_CFG_REG, 1);
184 	cfg = data->buf[0];
186 	if (data->three_wire)
190 	if (data->filter_50hz)
194 	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
195 	data->buf[1] = cfg;
197 	return max31865_write(data, 2);
205 	struct max31865_data *data = iio_priv(indio_dev);
207 	ret = max31865_read(data, MAX31865_FAULT_STATUS, 1);
211 	fault = data->buf[0] & faultbit;
228 	struct max31865_data *data = iio_priv(indio_dev);
230 	return sysfs_emit(buf, "%d\n", data->filter_50hz ? 50 : 60);
239 	struct max31865_data *data = iio_priv(indio_dev);
249 		data->filter_50hz = true;
252 		data->filter_50hz = false;
258 	mutex_lock(&data->lock);
259 	ret = max31865_init(data);
260 	mutex_unlock(&data->lock);
292 	struct max31865_data *data;
295 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*data));
299 	data = iio_priv(indio_dev);
300 	data->spi = spi;
301 	data->filter_50hz = false;
302 	mutex_init(&data->lock);
312 		data->three_wire = 1;
315 		data->three_wire = 0;
318 	ret = max31865_init(data);