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staging:iio:adc:ad7150: remove conversion mode handling. 

The AD7150 family of devices power up in continues conversion mode.
We can stay in this mode, unless power consumption becomes a real issue.
Actually the event generation as well as the running average
relies on continues conversion mode, so we better stay there.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Hennerich 2011-09-02 17:25:21 +01:00 committed by Greg Kroah-Hartman
parent 531efd6aa0
commit cd400fc94d
1 changed files with 0 additions and 94 deletions
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94
drivers/staging/iio/adc/ad7150.c
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@ -89,93 +89,10 @@ struct ad7150_chip_info {
struct mutex state_lock; struct mutex state_lock;
}; };
struct ad7150_conversion_mode {
char *name;
u8 reg_cfg;
};
static struct ad7150_conversion_mode
ad7150_conv_mode_table[AD7150_MAX_CONV_MODE] = {
{ "idle", 0 },
{ "continuous-conversion", 1 },
{ "single-conversion", 2 },
{ "power-down", 3 },
};
/* /*
* sysfs nodes * sysfs nodes
*/ */
#define IIO_DEV_ATTR_AVAIL_CONVERSION_MODES(_show) \
IIO_DEVICE_ATTR(available_conversion_modes, S_IRUGO, _show, NULL, 0)
#define IIO_DEV_ATTR_CONVERSION_MODE(_mode, _show, _store) \
IIO_DEVICE_ATTR(conversion_mode, _mode, _show, _store, 0)
static ssize_t ad7150_show_conversion_modes(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int i;
int len = 0;
for (i = 0; i < AD7150_MAX_CONV_MODE; i++)
len += sprintf(buf + len, "%s\n",
ad7150_conv_mode_table[i].name);
return len;
}
static IIO_DEV_ATTR_AVAIL_CONVERSION_MODES(ad7150_show_conversion_modes);
static ssize_t ad7150_show_conversion_mode(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = iio_priv(dev_info);
return sprintf(buf, "%s\n", chip->conversion_mode);
}
static ssize_t ad7150_store_conversion_mode(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad7150_chip_info *chip = iio_priv(dev_info);
u8 cfg;
int i, ret;
ret = i2c_smbus_read_byte_data(chip->client, AD7150_CFG);
if (ret < 0)
return ret;
cfg = ret;
for (i = 0; i < AD7150_MAX_CONV_MODE; i++) {
if (strncmp(buf, ad7150_conv_mode_table[i].name,
strlen(ad7150_conv_mode_table[i].name) - 1) ==
0) {
chip->conversion_mode = ad7150_conv_mode_table[i].name;
cfg |= 0x18 | ad7150_conv_mode_table[i].reg_cfg;
ret = i2c_smbus_write_byte_data(chip->client,
AD7150_CFG,
cfg);
if (ret < 0)
return ret;
return len;
}
}
dev_err(dev, "not supported conversion mode\n");
return -EINVAL;
}
static IIO_DEV_ATTR_CONVERSION_MODE(S_IRUGO | S_IWUSR,
ad7150_show_conversion_mode,
ad7150_store_conversion_mode);
static const u8 ad7150_addresses[][6] = { static const u8 ad7150_addresses[][6] = {
{ AD7150_CH1_DATA_HIGH, AD7150_CH1_AVG_HIGH, { AD7150_CH1_DATA_HIGH, AD7150_CH1_AVG_HIGH,
AD7150_CH1_SETUP, AD7150_CH1_THR_HOLD_H, AD7150_CH1_SETUP, AD7150_CH1_THR_HOLD_H,
@ -543,16 +460,6 @@ static const struct iio_chan_spec ad7150_channels[] = {
}, },
}; };
static struct attribute *ad7150_attributes[] = {
&iio_dev_attr_available_conversion_modes.dev_attr.attr,
&iio_dev_attr_conversion_mode.dev_attr.attr,
NULL,
};
static const struct attribute_group ad7150_attribute_group = {
.attrs = ad7150_attributes,
};
/* /*
* threshold events * threshold events
*/ */
@ -637,7 +544,6 @@ static struct attribute_group ad7150_event_attribute_group = {
}; };
static const struct iio_info ad7150_info = { static const struct iio_info ad7150_info = {
.attrs = &ad7150_attribute_group,
.event_attrs = &ad7150_event_attribute_group, .event_attrs = &ad7150_event_attribute_group,
.driver_module = THIS_MODULE, .driver_module = THIS_MODULE,
.read_raw = &ad7150_read_raw, .read_raw = &ad7150_read_raw,