Commit 192778fb authored by Mircea Caprioru's avatar Mircea Caprioru Committed by Jonathan Cameron
Browse files

iio: dac: ad5686: Add support for AD5674R/AD5679R 



The AD5674R/AD5679R are low power, 16-channel, 12-/16-bit buffered voltage
output digital-to-analog converters (DACs). They include a 2.5 V internal
reference (enabled by default).

These devices are very similar to AD5684R/AD5686R, except that they have 16
channels.

Signed-off-by: default avatarMircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent e717f8c6

drivers/iio/dac/Kconfig

+3 −3
Original line number Diff line number Diff line
@@ -148,9 +148,9 @@ config AD5686_SPI 
	depends on SPI

	select AD5686

	help

	  Say yes here to build support for Analog Devices AD5672R, AD5676,

	  AD5676R, AD5684, AD5684R, AD5684R, AD5685R, AD5686, AD5686R.

	  Voltage Output Digital to Analog Converter.

	  Say yes here to build support for Analog Devices AD5672R, AD5674R,

	  AD5676, AD5676R, AD5679R, AD5684, AD5684R, AD5684R, AD5685R, AD5686,

	  AD5686R Voltage Output Digital to Analog Converter.



	  To compile this driver as a module, choose M here: the

	  module will be called ad5686.

drivers/iio/dac/ad5686-spi.c

+5 −2
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+

/*

 * AD5672R, AD5676, AD5676R, AD5681R, AD5682R, AD5683, AD5683R,

 * AD5684, AD5684R, AD5685R, AD5686, AD5686R

 * AD5672R, AD5674R, AD5676, AD5676R, AD5679R,

 * AD5681R, AD5682R, AD5683, AD5683R, AD5684,

 * AD5684R, AD5685R, AD5686, AD5686R

 * Digital to analog converters driver

 *

 * Copyright 2018 Analog Devices Inc.
@@ -102,8 +103,10 @@ static int ad5686_spi_remove(struct spi_device *spi) 
static const struct spi_device_id ad5686_spi_id[] = {

	{"ad5310r", ID_AD5310R},

	{"ad5672r", ID_AD5672R},

	{"ad5674r", ID_AD5674R},

	{"ad5676", ID_AD5676},

	{"ad5676r", ID_AD5676R},

	{"ad5679r", ID_AD5679R},

	{"ad5681r", ID_AD5681R},

	{"ad5682r", ID_AD5682R},

	{"ad5683", ID_AD5683},

drivers/iio/dac/ad5686.c

+40 −2
Original line number Diff line number Diff line
@@ -71,7 +71,7 @@ static ssize_t ad5686_write_dac_powerdown(struct iio_dev *indio_dev, 
	int ret;

	struct ad5686_state *st = iio_priv(indio_dev);

	unsigned int val, ref_bit_msk;

	u8 shift;

	u8 shift, address = 0;



	ret = strtobool(buf, &readin);

	if (ret)
@@ -94,6 +94,9 @@ static ssize_t ad5686_write_dac_powerdown(struct iio_dev *indio_dev, 
	case AD5686_REGMAP:

		shift = 0;

		ref_bit_msk = 0;

		/* AD5674R/AD5679R have 16 channels and 2 powerdown registers */

		if (chan->channel > 0x7)

			address = 0x8;

		break;

	case AD5693_REGMAP:

		shift = 13;
@@ -107,7 +110,8 @@ static ssize_t ad5686_write_dac_powerdown(struct iio_dev *indio_dev, 
	if (!st->use_internal_vref)

		val |= ref_bit_msk;



	ret = st->write(st, AD5686_CMD_POWERDOWN_DAC, 0, val);

	ret = st->write(st, AD5686_CMD_POWERDOWN_DAC,

			address, val >> (address * 2));



	return ret ? ret : len;

}
@@ -226,10 +230,32 @@ static struct iio_chan_spec name[] = { \ 
		AD5868_CHANNEL(7, 7, bits, _shift),		\

}



#define DECLARE_AD5679_CHANNELS(name, bits, _shift)		\

static struct iio_chan_spec name[] = {				\

		AD5868_CHANNEL(0, 0, bits, _shift),		\

		AD5868_CHANNEL(1, 1, bits, _shift),		\

		AD5868_CHANNEL(2, 2, bits, _shift),		\

		AD5868_CHANNEL(3, 3, bits, _shift),		\

		AD5868_CHANNEL(4, 4, bits, _shift),		\

		AD5868_CHANNEL(5, 5, bits, _shift),		\

		AD5868_CHANNEL(6, 6, bits, _shift),		\

		AD5868_CHANNEL(7, 7, bits, _shift),		\

		AD5868_CHANNEL(8, 8, bits, _shift),		\

		AD5868_CHANNEL(9, 9, bits, _shift),		\

		AD5868_CHANNEL(10, 10, bits, _shift),		\

		AD5868_CHANNEL(11, 11, bits, _shift),		\

		AD5868_CHANNEL(12, 12, bits, _shift),		\

		AD5868_CHANNEL(13, 13, bits, _shift),		\

		AD5868_CHANNEL(14, 14, bits, _shift),		\

		AD5868_CHANNEL(15, 15, bits, _shift),		\

}



DECLARE_AD5693_CHANNELS(ad5310r_channels, 10, 2);

DECLARE_AD5693_CHANNELS(ad5311r_channels, 10, 6);

DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4);

DECLARE_AD5679_CHANNELS(ad5674r_channels, 12, 4);

DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0);

DECLARE_AD5679_CHANNELS(ad5679r_channels, 16, 0);

DECLARE_AD5686_CHANNELS(ad5684_channels, 12, 4);

DECLARE_AD5686_CHANNELS(ad5685r_channels, 14, 2);

DECLARE_AD5686_CHANNELS(ad5686_channels, 16, 0);
@@ -262,6 +288,12 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = { 
		.num_channels = 8,

		.regmap_type = AD5686_REGMAP,

	},

	[ID_AD5674R] = {

		.channels = ad5674r_channels,

		.int_vref_mv = 2500,

		.num_channels = 16,

		.regmap_type = AD5686_REGMAP,

	},

	[ID_AD5675R] = {

		.channels = ad5676_channels,

		.int_vref_mv = 2500,
@@ -279,6 +311,12 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = { 
		.num_channels = 8,

		.regmap_type = AD5686_REGMAP,

	},

	[ID_AD5679R] = {

		.channels = ad5679r_channels,

		.int_vref_mv = 2500,

		.num_channels = 16,

		.regmap_type = AD5686_REGMAP,

	},

	[ID_AD5681R] = {

		.channels = ad5691r_channels,

		.int_vref_mv = 2500,

drivers/iio/dac/ad5686.h

+2 −0
Original line number Diff line number Diff line
@@ -54,9 +54,11 @@ enum ad5686_supported_device_ids { 
	ID_AD5311R,

	ID_AD5671R,

	ID_AD5672R,

	ID_AD5674R,

	ID_AD5675R,

	ID_AD5676,

	ID_AD5676R,

	ID_AD5679R,

	ID_AD5681R,

	ID_AD5682R,

	ID_AD5683,

CRA Git | Maintained and supported by SUSTech CRA and CCSE