staging:iio:adc:ad7314 removal. Supported via hwmon.
Driver ported over to hwmon where it fits much better. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron
Greg Kroah-Hartman
parent
5df06b16d5
commit
48a2c3799b
@ -34,13 +34,6 @@ config AD7298
|
||||
To compile this driver as a module, choose M here: the
|
||||
module will be called ad7298.
|
||||
|
||||
config AD7314
|
||||
tristate "Analog Devices AD7314 temperature sensor driver"
|
||||
depends on SPI
|
||||
help
|
||||
Say yes here to build support for Analog Devices AD7314
|
||||
temperature sensors.
|
||||
|
||||
config AD7606
|
||||
tristate "Analog Devices AD7606 ADC driver"
|
||||
depends on GPIOLIB
|
||||
|
||||
@ -32,7 +32,6 @@ obj-$(CONFIG_AD7298) += ad7298.o
|
||||
obj-$(CONFIG_AD7150) += ad7150.o
|
||||
obj-$(CONFIG_AD7152) += ad7152.o
|
||||
obj-$(CONFIG_AD7291) += ad7291.o
|
||||
obj-$(CONFIG_AD7314) += ad7314.o
|
||||
obj-$(CONFIG_AD7746) += ad7746.o
|
||||
obj-$(CONFIG_AD7780) += ad7780.o
|
||||
obj-$(CONFIG_AD7793) += ad7793.o
|
||||
|
||||
@ -1,281 +0,0 @@
|
||||
/*
|
||||
* AD7314 digital temperature sensor driver for AD7314, ADT7301 and ADT7302
|
||||
*
|
||||
* Copyright 2010 Analog Devices Inc.
|
||||
*
|
||||
* Licensed under the GPL-2 or later.
|
||||
*/
|
||||
|
||||
#include <linux/device.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/sysfs.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/module.h>
|
||||
|
||||
#include "../iio.h"
|
||||
#include "../sysfs.h"
|
||||
|
||||
/*
|
||||
* AD7314 power mode
|
||||
*/
|
||||
#define AD7314_PD 0x2000
|
||||
|
||||
/*
|
||||
* AD7314 temperature masks
|
||||
*/
|
||||
#define AD7314_TEMP_SIGN 0x200
|
||||
#define AD7314_TEMP_MASK 0x7FE0
|
||||
#define AD7314_TEMP_OFFSET 5
|
||||
#define AD7314_TEMP_FLOAT_OFFSET 2
|
||||
#define AD7314_TEMP_FLOAT_MASK 0x3
|
||||
|
||||
/*
|
||||
* ADT7301 and ADT7302 temperature masks
|
||||
*/
|
||||
#define ADT7301_TEMP_SIGN 0x2000
|
||||
#define ADT7301_TEMP_MASK 0x2FFF
|
||||
#define ADT7301_TEMP_FLOAT_OFFSET 5
|
||||
#define ADT7301_TEMP_FLOAT_MASK 0x1F
|
||||
|
||||
/*
|
||||
* struct ad7314_chip_info - chip specifc information
|
||||
*/
|
||||
|
||||
struct ad7314_chip_info {
|
||||
struct spi_device *spi_dev;
|
||||
s64 last_timestamp;
|
||||
u8 mode;
|
||||
};
|
||||
|
||||
/*
|
||||
* ad7314 register access by SPI
|
||||
*/
|
||||
|
||||
static int ad7314_spi_read(struct ad7314_chip_info *chip, u16 *data)
|
||||
{
|
||||
struct spi_device *spi_dev = chip->spi_dev;
|
||||
int ret = 0;
|
||||
u16 value;
|
||||
|
||||
ret = spi_read(spi_dev, (u8 *)&value, sizeof(value));
|
||||
if (ret < 0) {
|
||||
dev_err(&spi_dev->dev, "SPI read error\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
*data = be16_to_cpu((u16)value);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ad7314_spi_write(struct ad7314_chip_info *chip, u16 data)
|
||||
{
|
||||
struct spi_device *spi_dev = chip->spi_dev;
|
||||
int ret = 0;
|
||||
u16 value = cpu_to_be16(data);
|
||||
|
||||
ret = spi_write(spi_dev, (u8 *)&value, sizeof(value));
|
||||
if (ret < 0)
|
||||
dev_err(&spi_dev->dev, "SPI write error\n");
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static ssize_t ad7314_show_mode(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct iio_dev *dev_info = dev_get_drvdata(dev);
|
||||
struct ad7314_chip_info *chip = iio_priv(dev_info);
|
||||
|
||||
if (chip->mode)
|
||||
return sprintf(buf, "power-save\n");
|
||||
else
|
||||
return sprintf(buf, "full\n");
|
||||
}
|
||||
|
||||
static ssize_t ad7314_store_mode(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf,
|
||||
size_t len)
|
||||
{
|
||||
struct iio_dev *dev_info = dev_get_drvdata(dev);
|
||||
struct ad7314_chip_info *chip = iio_priv(dev_info);
|
||||
u16 mode = 0;
|
||||
int ret;
|
||||
|
||||
if (!strcmp(buf, "full"))
|
||||
mode = AD7314_PD;
|
||||
|
||||
ret = ad7314_spi_write(chip, mode);
|
||||
if (ret)
|
||||
return -EIO;
|
||||
|
||||
chip->mode = mode;
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
|
||||
ad7314_show_mode,
|
||||
ad7314_store_mode,
|
||||
0);
|
||||
|
||||
static ssize_t ad7314_show_available_modes(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
return sprintf(buf, "full\npower-save\n");
|
||||
}
|
||||
|
||||
static IIO_DEVICE_ATTR(available_modes, S_IRUGO, ad7314_show_available_modes, NULL, 0);
|
||||
|
||||
static ssize_t ad7314_show_temperature(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct iio_dev *dev_info = dev_get_drvdata(dev);
|
||||
struct ad7314_chip_info *chip = iio_priv(dev_info);
|
||||
u16 data;
|
||||
char sign = ' ';
|
||||
int ret;
|
||||
|
||||
if (chip->mode) {
|
||||
ret = ad7314_spi_write(chip, 0);
|
||||
if (ret)
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
ret = ad7314_spi_read(chip, &data);
|
||||
if (ret)
|
||||
return -EIO;
|
||||
|
||||
if (chip->mode)
|
||||
ad7314_spi_write(chip, chip->mode);
|
||||
|
||||
if (strcmp(dev_info->name, "ad7314")) {
|
||||
data = (data & AD7314_TEMP_MASK) >>
|
||||
AD7314_TEMP_OFFSET;
|
||||
if (data & AD7314_TEMP_SIGN) {
|
||||
data = (AD7314_TEMP_SIGN << 1) - data;
|
||||
sign = '-';
|
||||
}
|
||||
|
||||
return sprintf(buf, "%c%d.%.2d\n", sign,
|
||||
data >> AD7314_TEMP_FLOAT_OFFSET,
|
||||
(data & AD7314_TEMP_FLOAT_MASK) * 25);
|
||||
} else {
|
||||
data &= ADT7301_TEMP_MASK;
|
||||
if (data & ADT7301_TEMP_SIGN) {
|
||||
data = (ADT7301_TEMP_SIGN << 1) - data;
|
||||
sign = '-';
|
||||
}
|
||||
|
||||
return sprintf(buf, "%c%d.%.5d\n", sign,
|
||||
data >> ADT7301_TEMP_FLOAT_OFFSET,
|
||||
(data & ADT7301_TEMP_FLOAT_MASK) * 3125);
|
||||
}
|
||||
}
|
||||
|
||||
static IIO_DEVICE_ATTR(temperature, S_IRUGO, ad7314_show_temperature, NULL, 0);
|
||||
|
||||
static struct attribute *ad7314_attributes[] = {
|
||||
&iio_dev_attr_available_modes.dev_attr.attr,
|
||||
&iio_dev_attr_mode.dev_attr.attr,
|
||||
&iio_dev_attr_temperature.dev_attr.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static const struct attribute_group ad7314_attribute_group = {
|
||||
.attrs = ad7314_attributes,
|
||||
};
|
||||
|
||||
static const struct iio_info ad7314_info = {
|
||||
.attrs = &ad7314_attribute_group,
|
||||
.driver_module = THIS_MODULE,
|
||||
};
|
||||
/*
|
||||
* device probe and remove
|
||||
*/
|
||||
|
||||
static int __devinit ad7314_probe(struct spi_device *spi_dev)
|
||||
{
|
||||
struct ad7314_chip_info *chip;
|
||||
struct iio_dev *indio_dev;
|
||||
int ret = 0;
|
||||
|
||||
indio_dev = iio_allocate_device(sizeof(*chip));
|
||||
if (indio_dev == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto error_ret;
|
||||
}
|
||||
chip = iio_priv(indio_dev);
|
||||
/* this is only used for device removal purposes */
|
||||
dev_set_drvdata(&spi_dev->dev, chip);
|
||||
|
||||
chip->spi_dev = spi_dev;
|
||||
|
||||
indio_dev->name = spi_get_device_id(spi_dev)->name;
|
||||
indio_dev->dev.parent = &spi_dev->dev;
|
||||
indio_dev->info = &ad7314_info;
|
||||
|
||||
ret = iio_device_register(indio_dev);
|
||||
if (ret)
|
||||
goto error_free_dev;
|
||||
|
||||
dev_info(&spi_dev->dev, "%s temperature sensor registered.\n",
|
||||
indio_dev->name);
|
||||
|
||||
return 0;
|
||||
error_free_dev:
|
||||
iio_free_device(indio_dev);
|
||||
error_ret:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit ad7314_remove(struct spi_device *spi_dev)
|
||||
{
|
||||
struct iio_dev *indio_dev = dev_get_drvdata(&spi_dev->dev);
|
||||
|
||||
dev_set_drvdata(&spi_dev->dev, NULL);
|
||||
iio_device_unregister(indio_dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct spi_device_id ad7314_id[] = {
|
||||
{ "adt7301", 0 },
|
||||
{ "adt7302", 0 },
|
||||
{ "ad7314", 0 },
|
||||
{}
|
||||
};
|
||||
|
||||
static struct spi_driver ad7314_driver = {
|
||||
.driver = {
|
||||
.name = "ad7314",
|
||||
.bus = &spi_bus_type,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ad7314_probe,
|
||||
.remove = __devexit_p(ad7314_remove),
|
||||
.id_table = ad7314_id,
|
||||
};
|
||||
|
||||
static __init int ad7314_init(void)
|
||||
{
|
||||
return spi_register_driver(&ad7314_driver);
|
||||
}
|
||||
|
||||
static __exit void ad7314_exit(void)
|
||||
{
|
||||
spi_unregister_driver(&ad7314_driver);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
|
||||
MODULE_DESCRIPTION("Analog Devices AD7314, ADT7301 and ADT7302 digital"
|
||||
" temperature sensor driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
||||
module_init(ad7314_init);
|
||||
module_exit(ad7314_exit);
|
||||
Loading…
x
Reference in New Issue
Block a user