// SPDX-License-Identifier: GPL-2.0-only /* * AD7293 driver * * Copyright 2021 Analog Devices Inc. */ #include <linux/bitfield.h> #include <linux/bits.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/gpio/consumer.h> #include <linux/iio/iio.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/regulator/consumer.h> #include <linux/spi/spi.h> #include <linux/unaligned.h> #define AD7293_R1B … #define AD7293_R2B … #define AD7293_PAGE_ADDR_MSK … #define AD7293_PAGE(x) … /* AD7293 Register Map Common */ #define AD7293_REG_NO_OP … #define AD7293_REG_PAGE_SELECT … #define AD7293_REG_CONV_CMD … #define AD7293_REG_RESULT … #define AD7293_REG_DAC_EN … #define AD7293_REG_DEVICE_ID … #define AD7293_REG_SOFT_RESET … /* AD7293 Register Map Page 0x0 */ #define AD7293_REG_VIN0 … #define AD7293_REG_VIN1 … #define AD7293_REG_VIN2 … #define AD7293_REG_VIN3 … #define AD7293_REG_TSENSE_INT … #define AD7293_REG_TSENSE_D0 … #define AD7293_REG_TSENSE_D1 … #define AD7293_REG_ISENSE_0 … #define AD7293_REG_ISENSE_1 … #define AD7293_REG_ISENSE_2 … #define AD7293_REG_ISENSE_3 … #define AD7293_REG_UNI_VOUT0 … #define AD7293_REG_UNI_VOUT1 … #define AD7293_REG_UNI_VOUT2 … #define AD7293_REG_UNI_VOUT3 … #define AD7293_REG_BI_VOUT0 … #define AD7293_REG_BI_VOUT1 … #define AD7293_REG_BI_VOUT2 … #define AD7293_REG_BI_VOUT3 … /* AD7293 Register Map Page 0x2 */ #define AD7293_REG_DIGITAL_OUT_EN … #define AD7293_REG_DIGITAL_INOUT_FUNC … #define AD7293_REG_DIGITAL_FUNC_POL … #define AD7293_REG_GENERAL … #define AD7293_REG_VINX_RANGE0 … #define AD7293_REG_VINX_RANGE1 … #define AD7293_REG_VINX_DIFF_SE … #define AD7293_REG_VINX_FILTER … #define AD7293_REG_BG_EN … #define AD7293_REG_CONV_DELAY … #define AD7293_REG_TSENSE_BG_EN … #define AD7293_REG_ISENSE_BG_EN … #define AD7293_REG_ISENSE_GAIN … #define AD7293_REG_DAC_SNOOZE_O … #define AD7293_REG_DAC_SNOOZE_1 … #define AD7293_REG_RSX_MON_BG_EN … #define AD7293_REG_INTEGR_CL … #define AD7293_REG_PA_ON_CTRL … #define AD7293_REG_RAMP_TIME_0 … #define AD7293_REG_RAMP_TIME_1 … #define AD7293_REG_RAMP_TIME_2 … #define AD7293_REG_RAMP_TIME_3 … #define AD7293_REG_CL_FR_IT … #define AD7293_REG_INTX_AVSS_AVDD … /* AD7293 Register Map Page 0x3 */ #define AD7293_REG_VINX_SEQ … #define AD7293_REG_ISENSEX_TSENSEX_SEQ … #define AD7293_REG_RSX_MON_BI_VOUTX_SEQ … /* AD7293 Register Map Page 0xE */ #define AD7293_REG_VIN0_OFFSET … #define AD7293_REG_VIN1_OFFSET … #define AD7293_REG_VIN2_OFFSET … #define AD7293_REG_VIN3_OFFSET … #define AD7293_REG_TSENSE_INT_OFFSET … #define AD7293_REG_TSENSE_D0_OFFSET … #define AD7293_REG_TSENSE_D1_OFFSET … #define AD7293_REG_ISENSE0_OFFSET … #define AD7293_REG_ISENSE1_OFFSET … #define AD7293_REG_ISENSE2_OFFSET … #define AD7293_REG_ISENSE3_OFFSET … #define AD7293_REG_UNI_VOUT0_OFFSET … #define AD7293_REG_UNI_VOUT1_OFFSET … #define AD7293_REG_UNI_VOUT2_OFFSET … #define AD7293_REG_UNI_VOUT3_OFFSET … #define AD7293_REG_BI_VOUT0_OFFSET … #define AD7293_REG_BI_VOUT1_OFFSET … #define AD7293_REG_BI_VOUT2_OFFSET … #define AD7293_REG_BI_VOUT3_OFFSET … /* AD7293 Miscellaneous Definitions */ #define AD7293_READ … #define AD7293_TRANSF_LEN_MSK … #define AD7293_REG_ADDR_MSK … #define AD7293_REG_VOUT_OFFSET_MSK … #define AD7293_REG_DATA_RAW_MSK … #define AD7293_REG_VINX_RANGE_GET_CH_MSK(x, ch) … #define AD7293_REG_VINX_RANGE_SET_CH_MSK(x, ch) … #define AD7293_CHIP_ID … enum ad7293_ch_type { … }; enum ad7293_max_offset { … }; static const int dac_offset_table[] = …; static const int isense_gain_table[] = …; static const int adc_range_table[] = …; struct ad7293_state { … }; static int ad7293_page_select(struct ad7293_state *st, unsigned int reg) { … } static int __ad7293_spi_read(struct ad7293_state *st, unsigned int reg, u16 *val) { … } static int ad7293_spi_read(struct ad7293_state *st, unsigned int reg, u16 *val) { … } static int __ad7293_spi_write(struct ad7293_state *st, unsigned int reg, u16 val) { … } static int ad7293_spi_write(struct ad7293_state *st, unsigned int reg, u16 val) { … } static int __ad7293_spi_update_bits(struct ad7293_state *st, unsigned int reg, u16 mask, u16 val) { … } static int ad7293_spi_update_bits(struct ad7293_state *st, unsigned int reg, u16 mask, u16 val) { … } static int ad7293_adc_get_scale(struct ad7293_state *st, unsigned int ch, u16 *range) { … } static int ad7293_adc_set_scale(struct ad7293_state *st, unsigned int ch, u16 range) { … } static int ad7293_get_offset(struct ad7293_state *st, unsigned int ch, u16 *offset) { … } static int ad7293_set_offset(struct ad7293_state *st, unsigned int ch, u16 offset) { … } static int ad7293_isense_set_scale(struct ad7293_state *st, unsigned int ch, u16 gain) { … } static int ad7293_isense_get_scale(struct ad7293_state *st, unsigned int ch, u16 *gain) { … } static int ad7293_dac_write_raw(struct ad7293_state *st, unsigned int ch, u16 raw) { … } static int ad7293_ch_read_raw(struct ad7293_state *st, enum ad7293_ch_type type, unsigned int ch, u16 *raw) { … } static int ad7293_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long info) { … } static int ad7293_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long info) { … } static int ad7293_reg_access(struct iio_dev *indio_dev, unsigned int reg, unsigned int write_val, unsigned int *read_val) { … } static int ad7293_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, const int **vals, int *type, int *length, long info) { … } #define AD7293_CHAN_ADC(_channel) … #define AD7293_CHAN_DAC(_channel) … #define AD7293_CHAN_ISENSE(_channel) … #define AD7293_CHAN_TEMP(_channel) … static const struct iio_chan_spec ad7293_channels[] = …; static int ad7293_soft_reset(struct ad7293_state *st) { … } static int ad7293_reset(struct ad7293_state *st) { … } static int ad7293_properties_parse(struct ad7293_state *st) { … } static void ad7293_reg_disable(void *data) { … } static int ad7293_init(struct ad7293_state *st) { … } static const struct iio_info ad7293_info = …; static int ad7293_probe(struct spi_device *spi) { … } static const struct spi_device_id ad7293_id[] = …; MODULE_DEVICE_TABLE(spi, ad7293_id); static const struct of_device_id ad7293_of_match[] = …; MODULE_DEVICE_TABLE(of, ad7293_of_match); static struct spi_driver ad7293_driver = …; module_spi_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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