// SPDX-License-Identifier: GPL-2.0-only /* * Analog devices AD5360, AD5361, AD5362, AD5363, AD5370, AD5371, AD5373 * multi-channel Digital to Analog Converters driver * * Copyright 2011 Analog Devices Inc. */ #include <linux/device.h> #include <linux/err.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/spi/spi.h> #include <linux/slab.h> #include <linux/sysfs.h> #include <linux/regulator/consumer.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #define AD5360_CMD(x) … #define AD5360_ADDR(x) … #define AD5360_READBACK_TYPE(x) … #define AD5360_READBACK_ADDR(x) … #define AD5360_CHAN_ADDR(chan) … #define AD5360_CMD_WRITE_DATA … #define AD5360_CMD_WRITE_OFFSET … #define AD5360_CMD_WRITE_GAIN … #define AD5360_CMD_SPECIAL_FUNCTION … /* Special function register addresses */ #define AD5360_REG_SF_NOP … #define AD5360_REG_SF_CTRL … #define AD5360_REG_SF_OFS(x) … #define AD5360_REG_SF_READBACK … #define AD5360_SF_CTRL_PWR_DOWN … #define AD5360_READBACK_X1A … #define AD5360_READBACK_X1B … #define AD5360_READBACK_OFFSET … #define AD5360_READBACK_GAIN … #define AD5360_READBACK_SF … /** * struct ad5360_chip_info - chip specific information * @channel_template: channel specification template * @num_channels: number of channels * @channels_per_group: number of channels per group * @num_vrefs: number of vref supplies for the chip */ struct ad5360_chip_info { … }; /** * struct ad5360_state - driver instance specific data * @spi: spi_device * @chip_info: chip model specific constants, available modes etc * @vref_reg: vref supply regulators * @ctrl: control register cache * @lock: lock to protect the data buffer during SPI ops * @data: spi transfer buffers */ struct ad5360_state { … }; enum ad5360_type { … }; #define AD5360_CHANNEL(bits) … static const struct ad5360_chip_info ad5360_chip_info_tbl[] = …; static unsigned int ad5360_get_channel_vref_index(struct ad5360_state *st, unsigned int channel) { … } static int ad5360_get_channel_vref(struct ad5360_state *st, unsigned int channel) { … } static int ad5360_write_unlocked(struct iio_dev *indio_dev, unsigned int cmd, unsigned int addr, unsigned int val, unsigned int shift) { … } static int ad5360_write(struct iio_dev *indio_dev, unsigned int cmd, unsigned int addr, unsigned int val, unsigned int shift) { … } static int ad5360_read(struct iio_dev *indio_dev, unsigned int type, unsigned int addr) { … } static ssize_t ad5360_read_dac_powerdown(struct device *dev, struct device_attribute *attr, char *buf) { … } static int ad5360_update_ctrl(struct iio_dev *indio_dev, unsigned int set, unsigned int clr) { … } static ssize_t ad5360_write_dac_powerdown(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static IIO_DEVICE_ATTR(out_voltage_powerdown, S_IRUGO | S_IWUSR, ad5360_read_dac_powerdown, ad5360_write_dac_powerdown, 0); static struct attribute *ad5360_attributes[] = …; static const struct attribute_group ad5360_attribute_group = …; static int ad5360_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int ad5360_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long m) { … } static const struct iio_info ad5360_info = …; static const char * const ad5360_vref_name[] = …; static int ad5360_alloc_channels(struct iio_dev *indio_dev) { … } static int ad5360_probe(struct spi_device *spi) { … } static void ad5360_remove(struct spi_device *spi) { … } static const struct spi_device_id ad5360_ids[] = …; MODULE_DEVICE_TABLE(spi, ad5360_ids); static struct spi_driver ad5360_driver = …; module_spi_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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