linux-imx

/*

 * AD5024, AD5025, AD5044, AD5045, AD5064, AD5064-1, AD5065, AD5625, AD5625R,

 * AD5627, AD5627R, AD5628, AD5629R, AD5645R, AD5647R, AD5648, AD5665, AD5665R,

 * AD5666, AD5667, AD5667R, AD5668, AD5669R, LTC2606, LTC2607, LTC2609, LTC2616,

 * LTC2617, LTC2619, LTC2626, LTC2627, LTC2629, LTC2631, LTC2633, LTC2635

 * Digital to analog converters driver

 *

 * Copyright 2011 Analog Devices Inc.

 *

 * Licensed under the GPL-2.

 */

​

#include <linux/device.h>

#include <linux/err.h>

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/spi/spi.h>

#include <linux/i2c.h>

#include <linux/slab.h>

#include <linux/sysfs.h>

#include <linux/regulator/consumer.h>

#include <asm/unaligned.h>

​

#include <linux/iio/iio.h>

#include <linux/iio/sysfs.h>

​

#define AD5064_MAX_DAC_CHANNELS         8

#define AD5064_MAX_VREFS            4

​

#define AD5064_ADDR(x)              ((x) << 20)

#define AD5064_CMD(x)               ((x) << 24)

​

#define AD5064_ADDR_ALL_DAC         0xF

​

#define AD5064_CMD_WRITE_INPUT_N        0x0

#define AD5064_CMD_UPDATE_DAC_N         0x1

#define AD5064_CMD_WRITE_INPUT_N_UPDATE_ALL 0x2

#define AD5064_CMD_WRITE_INPUT_N_UPDATE_N   0x3

#define AD5064_CMD_POWERDOWN_DAC        0x4

#define AD5064_CMD_CLEAR            0x5

#define AD5064_CMD_LDAC_MASK            0x6

#define AD5064_CMD_RESET            0x7

#define AD5064_CMD_CONFIG           0x8

​

#define AD5064_CMD_RESET_V2         0x5

#define AD5064_CMD_CONFIG_V2            0x7

​

#define AD5064_CONFIG_DAISY_CHAIN_ENABLE    BIT(1)

#define AD5064_CONFIG_INT_VREF_ENABLE       BIT(0)

​

#define AD5064_LDAC_PWRDN_NONE          0x0

#define AD5064_LDAC_PWRDN_1K            0x1

#define AD5064_LDAC_PWRDN_100K          0x2

#define AD5064_LDAC_PWRDN_3STATE        0x3

​

/**

 * enum ad5064_regmap_type - Register layout variant

 * @AD5064_REGMAP_ADI: Old Analog Devices register map layout

 * @AD5064_REGMAP_ADI2: New Analog Devices register map layout

 * @AD5064_REGMAP_LTC: LTC register map layout

 */

enum ad5064_regmap_type {

    AD5064_REGMAP_ADI,