linux/drivers/iio/adc/ti-lmp92064.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Texas Instruments LMP92064 SPI ADC driver
 *
 * Copyright (c) 2022 Leonard Göhrs <[email protected]>, Pengutronix
 *
 * Based on linux/drivers/iio/adc/ti-tsc2046.c
 * Copyright (c) 2021 Oleksij Rempel <[email protected]>, Pengutronix
 */

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>

#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/driver.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/trigger_consumer.h>

#define TI_LMP92064_REG_CONFIG_A …
#define TI_LMP92064_REG_CONFIG_B …
#define TI_LMP92064_REG_CHIP_REV …

#define TI_LMP92064_REG_MFR_ID1 …
#define TI_LMP92064_REG_MFR_ID2 …

#define TI_LMP92064_REG_REG_UPDATE …
#define TI_LMP92064_REG_CONFIG_REG …
#define TI_LMP92064_REG_STATUS …

#define TI_LMP92064_REG_DATA_VOUT_LSB …
#define TI_LMP92064_REG_DATA_VOUT_MSB …
#define TI_LMP92064_REG_DATA_COUT_LSB …
#define TI_LMP92064_REG_DATA_COUT_MSB …

#define TI_LMP92064_VAL_CONFIG_A …
#define TI_LMP92064_VAL_CONFIG_B …
#define TI_LMP92064_VAL_STATUS_OK …

/*
 * Channel number definitions for the two channels of the device
 * - IN Current (INC)
 * - IN Voltage (INV)
 */
#define TI_LMP92064_CHAN_INC …
#define TI_LMP92064_CHAN_INV …

static const struct regmap_range lmp92064_readable_reg_ranges[] = …;

static const struct regmap_access_table lmp92064_readable_regs = …;

static const struct regmap_range lmp92064_writable_reg_ranges[] = …;

static const struct regmap_access_table lmp92064_writable_regs = …;

static const struct regmap_config lmp92064_spi_regmap_config = …;

struct lmp92064_adc_priv { … };

static const struct iio_chan_spec lmp92064_adc_channels[] = …;

static const unsigned long lmp92064_scan_masks[] = …;

static int lmp92064_read_meas(struct lmp92064_adc_priv *priv, u16 *res)
{ … }

static int lmp92064_read_raw(struct iio_dev *indio_dev,
			     struct iio_chan_spec const *chan, int *val,
			     int *val2, long mask)
{ … }

static irqreturn_t lmp92064_trigger_handler(int irq, void *p)
{ … }

static int lmp92064_reset(struct lmp92064_adc_priv *priv,
			  struct gpio_desc *gpio_reset)
{ … }

static const struct iio_info lmp92064_adc_info = …;

static int lmp92064_adc_probe(struct spi_device *spi)
{ … }

static const struct spi_device_id lmp92064_id_table[] = …;
MODULE_DEVICE_TABLE(spi, lmp92064_id_table);

static const struct of_device_id lmp92064_of_table[] = …;
MODULE_DEVICE_TABLE(of, lmp92064_of_table);

static struct spi_driver lmp92064_adc_driver = …;
module_spi_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;