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

/*
 * AD5446 SPI DAC driver
 *
 * Copyright 2010 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */
#ifndef IIO_DAC_AD5446_H_
#define IIO_DAC_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 AD5620_LOAD		(0x0 << 14) /* Load and update Norm Operation*/
#define AD5620_PWRDWN_1k	(0x1 << 14) /* Power-down: 1kOhm to GND */
#define AD5620_PWRDWN_100k	(0x2 << 14) /* Power-down: 100kOhm to GND */
#define AD5620_PWRDWN_TRISTATE	(0x3 << 14) /* Power-down: Three-state */

#define AD5660_LOAD		(0x0 << 16) /* Load and update Norm Operation*/
#define AD5660_PWRDWN_1k	(0x1 << 16) /* Power-down: 1kOhm to GND */
#define AD5660_PWRDWN_100k	(0x2 << 16) /* Power-down: 100kOhm to GND */
#define AD5660_PWRDWN_TRISTATE	(0x3 << 16) /* Power-down: Three-state */

#define MODE_PWRDWN_1k		0x1
#define MODE_PWRDWN_100k	0x2
#define MODE_PWRDWN_TRISTATE	0x3

/**
 * struct ad5446_state - driver instance specific data
 * @spi:		spi_device
 * @chip_info:		chip model specific constants, available modes etc
 * @reg:		supply regulator
 * @vref_mv:		actual reference voltage used
 */

struct ad5446_state {
	struct spi_device		*spi;
	const struct ad5446_chip_info	*chip_info;
	struct regulator		*reg;
	unsigned short			vref_mv;
	unsigned			cached_val;
	unsigned			pwr_down_mode;
	unsigned			pwr_down;
};

/**
 * struct ad5446_chip_info - chip specific information
 * @channel:		channel spec for the DAC
 * @int_vref_mv:	AD5620/40/60: the internal reference voltage
 * @write:		chip specific helper function to write to the register
 */

struct ad5446_chip_info {
	struct iio_chan_spec	channel;
	u16			int_vref_mv;
	int			(*write)(struct ad5446_state *st, unsigned val);
};

/**
 * ad5446_supported_device_ids:
 * The AD5620/40/60 parts are available in different fixed internal reference
 * voltage options. The actual part numbers may look differently
 * (and a bit cryptic), however this style is used to make clear which
 * parts are supported here.
 */

enum ad5446_supported_device_ids {
	ID_AD5444,
	ID_AD5446,
	ID_AD5450,
	ID_AD5451,
	ID_AD5541A,
	ID_AD5512A,
	ID_AD5553,
	ID_AD5601,
	ID_AD5611,
	ID_AD5621,
	ID_AD5620_2500,
	ID_AD5620_1250,
	ID_AD5640_2500,
	ID_AD5640_1250,
	ID_AD5660_2500,
	ID_AD5660_1250,
	ID_AD5662,
};

#endif /* IIO_DAC_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	*/
d846263d MH	8	#ifndef IIO_DAC_AD5446_H_
d846263d MH	9	#define IIO_DAC_AD5446_H_
b5a49481 MH	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
d846263d MH	18	#define AD5620_LOAD (0x0 << 14) /* Load and update Norm Operation*/
	19	#define AD5620_PWRDWN_1k (0x1 << 14) /* Power-down: 1kOhm to GND */
	20	#define AD5620_PWRDWN_100k (0x2 << 14) /* Power-down: 100kOhm to GND */
	21	#define AD5620_PWRDWN_TRISTATE (0x3 << 14) /* Power-down: Three-state */
	22
	23	#define AD5660_LOAD (0x0 << 16) /* Load and update Norm Operation*/
	24	#define AD5660_PWRDWN_1k (0x1 << 16) /* Power-down: 1kOhm to GND */
	25	#define AD5660_PWRDWN_100k (0x2 << 16) /* Power-down: 100kOhm to GND */
	26	#define AD5660_PWRDWN_TRISTATE (0x3 << 16) /* Power-down: Three-state */
	27
bbed4dc7 MH	28	#define MODE_PWRDWN_1k 0x1
	29	#define MODE_PWRDWN_100k 0x2
	30	#define MODE_PWRDWN_TRISTATE 0x3
	31
d846263d MH	32	/**
d846263d MH	33	* struct ad5446_state - driver instance specific data
d846263d MH	34	* @spi: spi_device
	35	* @chip_info: chip model specific constants, available modes etc
	36	* @reg: supply regulator
d846263d	37	* @vref_mv: actual reference voltage used
d846263d	38	*/
b5a49481 MH	39
b5a49481 MH	40	struct ad5446_state {
b5a49481 MH	41	struct spi_device *spi;
	42	const struct ad5446_chip_info *chip_info;
	43	struct regulator *reg;
b5a49481	44	unsigned short vref_mv;
bbed4dc7 MH	45	unsigned cached_val;
	46	unsigned pwr_down_mode;
	47	unsigned pwr_down;
d846263d MH	48	};
	49
	50	/**
4f765482	51	* struct ad5446_chip_info - chip specific information
33ad6b21	52	* @channel: channel spec for the DAC
d846263d	53	* @int_vref_mv: AD5620/40/60: the internal reference voltage
cae329e0	54	* @write: chip specific helper function to write to the register
d846263d MH	55	*/
	56
	57	struct ad5446_chip_info {
33ad6b21	58	struct iio_chan_spec channel;
bbed4dc7	59	u16 int_vref_mv;
cae329e0	60	int (write)(struct ad5446_state st, unsigned val);
b5a49481 MH	61	};
b5a49481 MH	62
d846263d MH	63	/**
	64	* ad5446_supported_device_ids:
	65	* The AD5620/40/60 parts are available in different fixed internal reference
	66	* voltage options. The actual part numbers may look differently
	67	* (and a bit cryptic), however this style is used to make clear which
	68	* parts are supported here.
	69	*/
	70
b5a49481 MH	71	enum ad5446_supported_device_ids {
	72	ID_AD5444,
	73	ID_AD5446,
779c0c46 LPC	74	ID_AD5450,
779c0c46 LPC	75	ID_AD5451,
67d1c1f4	76	ID_AD5541A,
b5a49481	77	ID_AD5512A,
0772268a	78	ID_AD5553,
2b61535a MH	79	ID_AD5601,
	80	ID_AD5611,
	81	ID_AD5621,
d846263d MH	82	ID_AD5620_2500,
	83	ID_AD5620_1250,
	84	ID_AD5640_2500,
	85	ID_AD5640_1250,
	86	ID_AD5660_2500,
	87	ID_AD5660_1250,
18e5ab31	88	ID_AD5662,
b5a49481 MH	89	};
b5a49481 MH	90
d846263d	91	#endif /* IIO_DAC_AD5446_H_ */