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Commit 6337de22 authored by Michael Hennerich's avatar Michael Hennerich Committed by Dmitry Torokhov
Browse files

Input: ad714x - fix endianness issues 



Allow driver to be used on Big Endian boxes.

Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 5b9063b1

drivers/input/misc/ad714x-i2c.c

+10 −24
Original line number Diff line number Diff line
@@ -32,17 +32,12 @@ static int ad714x_i2c_write(struct device *dev, unsigned short reg, 
{

	struct i2c_client *client = to_i2c_client(dev);

	int ret = 0;

	u8 *_reg = (u8 *)&reg;

	u8 *_data = (u8 *)&data;



	u8 tx[4] = {

		_reg[1],

		_reg[0],

		_data[1],

		_data[0]

	unsigned short tx[2] = {

		cpu_to_be16(reg),

		cpu_to_be16(data)

	};



	ret = i2c_master_send(client, tx, 4);

	ret = i2c_master_send(client, (u8 *)tx, 4);

	if (ret < 0)

		dev_err(&client->dev, "I2C write error\n");
@@ -54,25 +49,16 @@ static int ad714x_i2c_read(struct device *dev, unsigned short reg, 
{

	struct i2c_client *client = to_i2c_client(dev);

	int ret = 0;

	u8 *_reg = (u8 *)&reg;

	u8 *_data = (u8 *)data;

	unsigned short tx = cpu_to_be16(reg);



	u8 tx[2] = {

		_reg[1],

		_reg[0]

	};

	u8 rx[2];



	ret = i2c_master_send(client, tx, 2);

	ret = i2c_master_send(client, (u8 *)&tx, 2);

	if (ret >= 0)

		ret = i2c_master_recv(client, rx, 2);

		ret = i2c_master_recv(client, (u8 *)data, 2);



	if (unlikely(ret < 0)) {

	if (unlikely(ret < 0))

		dev_err(&client->dev, "I2C read error\n");

	} else {

		_data[0] = rx[1];

		_data[1] = rx[0];

	}

	else

		*data = be16_to_cpu(*data);



	return ret;

}

drivers/input/misc/ad714x-spi.c

+15 −9
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ 
 * Licensed under the GPL-2 or later.

 */



#include <linux/input.h>	/* BUS_I2C */

#include <linux/input.h>	/* BUS_SPI */

#include <linux/module.h>

#include <linux/spi/spi.h>

#include <linux/pm.h>
@@ -30,22 +30,28 @@ static int ad714x_spi_resume(struct device *dev) 


static SIMPLE_DEV_PM_OPS(ad714x_spi_pm, ad714x_spi_suspend, ad714x_spi_resume);



static int ad714x_spi_read(struct device *dev, unsigned short reg,

		unsigned short *data)

static int ad714x_spi_read(struct device *dev,

			   unsigned short reg, unsigned short *data)

{

	struct spi_device *spi = to_spi_device(dev);

	unsigned short tx = AD714x_SPI_CMD_PREFIX | AD714x_SPI_READ | reg;

	unsigned short tx = cpu_to_be16(AD714x_SPI_CMD_PREFIX |

					AD714x_SPI_READ | reg);

	int ret;



	return spi_write_then_read(spi, (u8 *)&tx, 2, (u8 *)data, 2);

	ret = spi_write_then_read(spi, &tx, 2, data, 2);



	*data = be16_to_cpup(data);



	return ret;

}



static int ad714x_spi_write(struct device *dev, unsigned short reg,

		unsigned short data)

static int ad714x_spi_write(struct device *dev,

			    unsigned short reg, unsigned short data)

{

	struct spi_device *spi = to_spi_device(dev);

	unsigned short tx[2] = {

		AD714x_SPI_CMD_PREFIX | reg,

		data

		cpu_to_be16(AD714x_SPI_CMD_PREFIX | reg),

		cpu_to_be16(data)

	};



	return spi_write(spi, (u8 *)tx, 4);