// SPDX-License-Identifier: GPL-2.0-only /* * AD7787/AD7788/AD7789/AD7790/AD7791 SPI ADC driver * * Copyright 2012 Analog Devices Inc. * Author: Lars-Peter Clausen <[email protected]> */ #include <linux/interrupt.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/spi/spi.h> #include <linux/regulator/consumer.h> #include <linux/err.h> #include <linux/sched.h> #include <linux/delay.h> #include <linux/module.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/buffer.h> #include <linux/iio/trigger.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #include <linux/iio/adc/ad_sigma_delta.h> #include <linux/platform_data/ad7791.h> #define AD7791_REG_COMM … #define AD7791_REG_STATUS … #define AD7791_REG_MODE … #define AD7791_REG_FILTER … #define AD7791_REG_DATA … #define AD7791_MODE_CONTINUOUS … #define AD7791_MODE_SINGLE … #define AD7791_MODE_POWERDOWN … #define AD7791_CH_AIN1P_AIN1N … #define AD7791_CH_AIN2 … #define AD7791_CH_AIN1N_AIN1N … #define AD7791_CH_AVDD_MONITOR … #define AD7791_FILTER_CLK_DIV_1 … #define AD7791_FILTER_CLK_DIV_2 … #define AD7791_FILTER_CLK_DIV_4 … #define AD7791_FILTER_CLK_DIV_8 … #define AD7791_FILTER_CLK_MASK … #define AD7791_FILTER_RATE_120 … #define AD7791_FILTER_RATE_100 … #define AD7791_FILTER_RATE_33_3 … #define AD7791_FILTER_RATE_20 … #define AD7791_FILTER_RATE_16_6 … #define AD7791_FILTER_RATE_16_7 … #define AD7791_FILTER_RATE_13_3 … #define AD7791_FILTER_RATE_9_5 … #define AD7791_FILTER_RATE_MASK … #define AD7791_MODE_BUFFER … #define AD7791_MODE_UNIPOLAR … #define AD7791_MODE_BURNOUT … #define AD7791_MODE_SEL_MASK … #define AD7791_MODE_SEL(x) … #define __AD7991_CHANNEL(_si, _channel1, _channel2, _address, _bits, \ _storagebits, _shift, _extend_name, _type, _mask_all) … #define AD7991_SHORTED_CHANNEL(_si, _channel, _address, _bits, \ _storagebits, _shift) … #define AD7991_CHANNEL(_si, _channel, _address, _bits, \ _storagebits, _shift) … #define AD7991_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \ _storagebits, _shift) … #define AD7991_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \ _shift) … #define DECLARE_AD7787_CHANNELS(name, bits, storagebits) … #define DECLARE_AD7791_CHANNELS(name, bits, storagebits) … static DECLARE_AD7787_CHANNELS(ad7787_channels, 24, 32); static DECLARE_AD7791_CHANNELS(ad7790_channels, 16, 16); static DECLARE_AD7791_CHANNELS(ad7791_channels, 24, 32); enum { … }; enum ad7791_chip_info_flags { … }; struct ad7791_chip_info { … }; static const struct ad7791_chip_info ad7791_chip_infos[] = …; struct ad7791_state { … }; static const int ad7791_sample_freq_avail[8][2] = …; static struct ad7791_state *ad_sigma_delta_to_ad7791(struct ad_sigma_delta *sd) { … } static int ad7791_set_channel(struct ad_sigma_delta *sd, unsigned int channel) { … } static int ad7791_set_mode(struct ad_sigma_delta *sd, enum ad_sigma_delta_mode mode) { … } static const struct ad_sigma_delta_info ad7791_sigma_delta_info = …; static int ad7791_read_raw(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, int *val, int *val2, long info) { … } static int ad7791_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("120 100 33.3 20 16.7 16.6 13.3 9.5"); static struct attribute *ad7791_attributes[] = …; static const struct attribute_group ad7791_attribute_group = …; static const struct iio_info ad7791_info = …; static const struct iio_info ad7791_no_filter_info = …; static int ad7791_setup(struct ad7791_state *st, struct ad7791_platform_data *pdata) { … } static void ad7791_reg_disable(void *reg) { … } static int ad7791_probe(struct spi_device *spi) { … } static const struct spi_device_id ad7791_spi_ids[] = …; MODULE_DEVICE_TABLE(spi, ad7791_spi_ids); static struct spi_driver ad7791_driver = …; module_spi_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_IMPORT_NS(…);
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