linux/drivers/iio/adc/lpc32xx_adc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 *  lpc32xx_adc.c - Support for ADC in LPC32XX
 *
 *  3-channel, 10-bit ADC
 *
 *  Copyright (C) 2011, 2012 Roland Stigge <[email protected]>
 */

#include <linux/clk.h>
#include <linux/completion.h>
#include <linux/err.h>
#include <linux/iio/iio.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>

/*
 * LPC32XX registers definitions
 */
#define LPC32XXAD_SELECT(x) …
#define LPC32XXAD_CTRL(x) …
#define LPC32XXAD_VALUE(x) …

/* Bit definitions for LPC32XXAD_SELECT: */
/* constant, always write this value! */
#define LPC32XXAD_REFm …
/* constant, always write this value! */
#define LPC32XXAD_REFp …
 /* multiple of this is the channel number: 0, 1, 2 */
#define LPC32XXAD_IN …
/* constant, always write this value! */
#define LPC32XXAD_INTERNAL …

/* Bit definitions for LPC32XXAD_CTRL: */
#define LPC32XXAD_STROBE …
#define LPC32XXAD_PDN_CTRL …

/* Bit definitions for LPC32XXAD_VALUE: */
#define LPC32XXAD_VALUE_MASK …

#define LPC32XXAD_NAME …

struct lpc32xx_adc_state { … };

static int lpc32xx_read_raw(struct iio_dev *indio_dev,
			    struct iio_chan_spec const *chan,
			    int *val,
			    int *val2,
			    long mask)
{ … }

static const struct iio_info lpc32xx_adc_iio_info = …;

#define LPC32XX_ADC_CHANNEL_BASE(_index) …

#define LPC32XX_ADC_CHANNEL(_index) …

#define LPC32XX_ADC_SCALE_CHANNEL(_index) …

static const struct iio_chan_spec lpc32xx_adc_iio_channels[] = …;

static const struct iio_chan_spec lpc32xx_adc_iio_scale_channels[] = …;

static irqreturn_t lpc32xx_adc_isr(int irq, void *dev_id)
{ … }

static int lpc32xx_adc_probe(struct platform_device *pdev)
{ … }

static const struct of_device_id lpc32xx_adc_match[] = …;
MODULE_DEVICE_TABLE(of, lpc32xx_adc_match);

static struct platform_driver lpc32xx_adc_driver = …;

module_platform_driver(…) …;

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