Commit 8ffedc1b authored by Dragos Bogdan's avatar Dragos Bogdan Committed by Jonathan Cameron
Browse files

staging:iio:ad7780: Remove the ad7780_platform_data 



The ad7780_platform_data contains just the reference voltage information.
Since the preferred way of specifying this information is using the Linux
regulator framework and the ad7780 platform_data is not used by other
users, it can be completely removed.

Signed-off-by: default avatarDragos Bogdan <dragos.bogdan@analog.com>
Acked-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent cef7e125

drivers/staging/iio/adc/ad7780.c

+2 −7
Original line number Diff line number Diff line
@@ -22,8 +22,6 @@ 
#include <linux/iio/sysfs.h>

#include <linux/iio/adc/ad_sigma_delta.h>



#include "ad7780.h"



#define AD7780_RDY	BIT(7)

#define AD7780_FILTER	BIT(6)

#define AD7780_ERR	BIT(5)
@@ -162,7 +160,6 @@ static const struct iio_info ad7780_info = { 


static int ad7780_probe(struct spi_device *spi)

{

	struct ad7780_platform_data *pdata = spi->dev.platform_data;

	struct ad7780_state *st;

	struct iio_dev *indio_dev;

	int ret, voltage_uv = 0;
@@ -188,12 +185,10 @@ static int ad7780_probe(struct spi_device *spi) 
	st->chip_info =

		&ad7780_chip_info_tbl[spi_get_device_id(spi)->driver_data];



	if (pdata && pdata->vref_mv)

		st->int_vref_mv = pdata->vref_mv;

	else if (voltage_uv)

	if (voltage_uv)

		st->int_vref_mv = voltage_uv / 1000;

	else

		dev_warn(&spi->dev, "reference voltage unspecified\n");

		dev_warn(&spi->dev, "Reference voltage unspecified\n");



	spi_set_drvdata(spi, indio_dev);

drivers/staging/iio/adc/ad7780.h

deleted100644 → 0
+0 −29
Original line number Diff line number Diff line 
/*

 * AD7780/AD7781 SPI ADC driver

 *

 * Copyright 2011 Analog Devices Inc.

 *

 * Licensed under the GPL-2.

 */

#ifndef IIO_ADC_AD7780_H_

#define IIO_ADC_AD7780_H_



/*

 * TODO: struct ad7780_platform_data needs to go into include/linux/iio

 */



/* NOTE:

 * The AD7780 doesn't feature a dedicated SPI chip select, in addition it

 * features a dual use data out ready DOUT/RDY output.

 * In order to avoid contentions on the SPI bus, it's therefore necessary

 * to use spi bus locking combined with a dedicated GPIO to control the

 * power down reset signal of the AD7780.

 *

 * The DOUT/RDY output must also be wired to an interrupt capable GPIO.

 */



struct ad7780_platform_data {

	u16				vref_mv;

};



#endif /* IIO_ADC_AD7780_H_ */

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