2 * AD7476/5/7/8 (A) SPI ADC driver
4 * Copyright 2010 Analog Devices Inc.
6 * Licensed under the GPL-2 or later.
8 #ifndef IIO_ADC_AD7476_H_
9 #define IIO_ADC_AD7476_H_
11 #define RES_MASK(bits) ((1 << (bits)) - 1)
14 * TODO: struct ad7476_platform_data needs to go into include/linux/iio
17 struct ad7476_platform_data {
21 struct ad7476_chip_info {
30 struct iio_dev *indio_dev;
31 struct spi_device *spi;
32 const struct ad7476_chip_info *chip_info;
33 struct regulator *reg;
34 struct work_struct poll_work;
35 atomic_t protect_ring;
37 struct spi_transfer xfer;
38 struct spi_message msg;
40 * DMA (thus cache coherency maintenance) requires the
41 * transfer buffers to live in their own cache lines.
43 unsigned char data[2] ____cacheline_aligned;
46 enum ad7476_supported_device_ids {
57 #ifdef CONFIG_IIO_RING_BUFFER
58 int ad7476_scan_from_ring(struct ad7476_state *st);
59 int ad7476_register_ring_funcs_and_init(struct iio_dev *indio_dev);
60 void ad7476_ring_cleanup(struct iio_dev *indio_dev);
61 #else /* CONFIG_IIO_RING_BUFFER */
62 static inline int ad7476_scan_from_ring(struct ad7476_state *st)
68 ad7476_register_ring_funcs_and_init(struct iio_dev *indio_dev)
73 static inline void ad7476_ring_cleanup(struct iio_dev *indio_dev)
76 #endif /* CONFIG_IIO_RING_BUFFER */
77 #endif /* IIO_ADC_AD7476_H_ */