[deliverable/linux.git] / drivers / staging / iio / dac / ad5446.h

/*
 * AD5446 SPI DAC driver
 *
 * Copyright 2010 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */
#ifndef IIO_ADC_AD5446_H_
#define IIO_ADC_AD5446_H_

/* DAC Control Bits */

#define AD5446_LOAD		(0x0 << 14) /* Load and update */
#define AD5446_SDO_DIS		(0x1 << 14) /* Disable SDO */
#define AD5446_NOP		(0x2 << 14) /* No operation */
#define AD5446_CLK_RISING	(0x3 << 14) /* Clock data on rising edge */

#define RES_MASK(bits)	((1 << (bits)) - 1)

struct ad5446_chip_info {
	u8				bits;		/* number of DAC bits */
	u8				storagebits;	/* number of bits written to the DAC */
	u8				left_shift;	/* number of bits the datum must be shifted */
	char				sign;		/* [s]igned or [u]nsigned */
};

struct ad5446_state {
	struct iio_dev			*indio_dev;
	struct spi_device		*spi;
	const struct ad5446_chip_info	*chip_info;
	struct regulator		*reg;
	struct work_struct		poll_work;
	unsigned short			vref_mv;
	struct spi_transfer		xfer;
	struct spi_message		msg;
	unsigned short			data;
};

enum ad5446_supported_device_ids {
	ID_AD5444,
	ID_AD5446,
	ID_AD5542A,
	ID_AD5512A,
};

#endif /* IIO_ADC_AD5446_H_ */
Commit	Line	Data
b5a49481 MH	1	/*
	2	* AD5446 SPI DAC driver
	3	*
	4	* Copyright 2010 Analog Devices Inc.
	5	*
	6	* Licensed under the GPL-2 or later.
	7	*/
	8	#ifndef IIO_ADC_AD5446_H_
	9	#define IIO_ADC_AD5446_H_
	10
	11	/* DAC Control Bits */
	12
	13	#define AD5446_LOAD (0x0 << 14) /* Load and update */
	14	#define AD5446_SDO_DIS (0x1 << 14) /* Disable SDO */
	15	#define AD5446_NOP (0x2 << 14) /* No operation */
	16	#define AD5446_CLK_RISING (0x3 << 14) /* Clock data on rising edge */
	17
	18	#define RES_MASK(bits) ((1 << (bits)) - 1)
	19
	20	struct ad5446_chip_info {
	21	u8 bits; /* number of DAC bits */
	22	u8 storagebits; /* number of bits written to the DAC */
	23	u8 left_shift; /* number of bits the datum must be shifted */
	24	char sign; /* [s]igned or [u]nsigned */
	25	};
	26
	27	struct ad5446_state {
	28	struct iio_dev *indio_dev;
	29	struct spi_device *spi;
	30	const struct ad5446_chip_info *chip_info;
	31	struct regulator *reg;
	32	struct work_struct poll_work;
	33	unsigned short vref_mv;
	34	struct spi_transfer xfer;
	35	struct spi_message msg;
	36	unsigned short data;
	37	};
	38
	39	enum ad5446_supported_device_ids {
	40	ID_AD5444,
	41	ID_AD5446,
	42	ID_AD5542A,
	43	ID_AD5512A,
	44	};
	45
	46	#endif /* IIO_ADC_AD5446_H_ */