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staging: iio: adc: ad799x drop in_precision in favor of new in_type 

-drop in_precision in favor of new in_type -
This also fixes the bug from the scan elements move (as a side effect)
-add sign and storagebits to struct ad799x_chip_info
-properly mask the results based on ad799x_chip_info:bits

staging: iio: adc: ad799x misc fixed per iio list review

remove new line
remove storagebits from struct ad799x_chip_info
use defined storagebits value for in_type

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Hennerich 2010-10-07 16:14:10 +02:00 committed by Greg Kroah-Hartman
parent a7861ff082
commit 3ba2e4939d
3 changed files with 25 additions and 14 deletions
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4
drivers/staging/iio/adc/ad799x.h
View File

@ -13,7 +13,7 @@
#define _AD799X_H_
#define AD799X_CHANNEL_SHIFT 4
#define AD799X_STORAGEBITS 16
/*
* AD7991, AD7995 and AD7999 defines
*/
@ -97,6 +97,8 @@ struct ad799x_state;
struct ad799x_chip_info {
u8 num_inputs;
u8 bits;
u8 storagebits;
char sign;
u16 int_vref_mv;
bool monitor_mode;
u16 default_config;

33
drivers/staging/iio/adc/ad799x_core.c
View File

@ -123,17 +123,18 @@ static AD799X_SCAN_EL(5);
static AD799X_SCAN_EL(6);
static AD799X_SCAN_EL(7);
static ssize_t ad799x_show_precision(struct device *dev,
static ssize_t ad799x_show_type(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct ad799x_state *st = iio_dev_get_devdata(dev_info);
return sprintf(buf, "%d\n", st->chip_info->bits);
}
struct iio_ring_buffer *ring = dev_get_drvdata(dev);
struct iio_dev *indio_dev = ring->indio_dev;
struct ad799x_state *st = indio_dev->dev_data;
static IIO_DEVICE_ATTR(in_precision, S_IRUGO, ad799x_show_precision,
NULL, 0);
return sprintf(buf, "%c%d/%d\n", st->chip_info->sign,
st->chip_info->bits, AD799X_STORAGEBITS);
}
static IIO_DEVICE_ATTR(in_type, S_IRUGO, ad799x_show_type, NULL, 0);
static int ad7991_5_9_set_scan_mode(struct ad799x_state *st, unsigned mask)
{
@ -211,11 +212,11 @@ static ssize_t ad799x_read_single_channel(struct device *dev,
if (ret < 0)
goto error_ret;
data = rxbuf[0] & 0xFFF;
data = rxbuf[0];
}
/* Pretty print the result */
len = sprintf(buf, "%u\n", data);
len = sprintf(buf, "%u\n", data & ((1 << (st->chip_info->bits)) - 1));
error_ret:
mutex_unlock(&dev_info->mlock);
@ -473,7 +474,7 @@ static struct attribute *ad7991_5_9_3_4_scan_el_attrs[] = {
&iio_const_attr_in2_index.dev_attr.attr,
&iio_scan_el_in3.dev_attr.attr,
&iio_const_attr_in3_index.dev_attr.attr,
&iio_dev_attr_in_precision.dev_attr.attr,
&iio_dev_attr_in_type.dev_attr.attr,
NULL,
};
@ -499,7 +500,7 @@ static struct attribute *ad7992_scan_el_attrs[] = {
&iio_const_attr_in0_index.dev_attr.attr,
&iio_scan_el_in1.dev_attr.attr,
&iio_const_attr_in1_index.dev_attr.attr,
&iio_dev_attr_in_precision.dev_attr.attr,
&iio_dev_attr_in_type.dev_attr.attr,
NULL,
};
@ -543,7 +544,7 @@ static struct attribute *ad7997_8_scan_el_attrs[] = {
&iio_const_attr_in6_index.dev_attr.attr,
&iio_scan_el_in7.dev_attr.attr,
&iio_const_attr_in7_index.dev_attr.attr,
&iio_dev_attr_in_precision.dev_attr.attr,
&iio_dev_attr_in_type.dev_attr.attr,
NULL,
};
@ -671,6 +672,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7991] = {
.num_inputs = 4,
.bits = 12,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 4096,
.dev_attrs = &ad7991_5_9_3_4_dev_attr_group,
.scan_attrs = &ad7991_5_9_3_4_scan_el_group,
@ -679,6 +681,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7995] = {
.num_inputs = 4,
.bits = 10,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 1024,
.dev_attrs = &ad7991_5_9_3_4_dev_attr_group,
.scan_attrs = &ad7991_5_9_3_4_scan_el_group,
@ -687,6 +690,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7999] = {
.num_inputs = 4,
.bits = 10,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 1024,
.dev_attrs = &ad7991_5_9_3_4_dev_attr_group,
.scan_attrs = &ad7991_5_9_3_4_scan_el_group,
@ -695,6 +699,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7992] = {
.num_inputs = 2,
.bits = 12,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 4096,
.monitor_mode = true,
.default_config = AD7998_ALERT_EN,
@ -706,6 +711,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7993] = {
.num_inputs = 4,
.bits = 10,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 1024,
.monitor_mode = true,
.default_config = AD7998_ALERT_EN,
@ -717,6 +723,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7994] = {
.num_inputs = 4,
.bits = 12,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 4096,
.monitor_mode = true,
.default_config = AD7998_ALERT_EN,
@ -728,6 +735,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7997] = {
.num_inputs = 8,
.bits = 10,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 1024,
.monitor_mode = true,
.default_config = AD7998_ALERT_EN,
@ -739,6 +747,7 @@ static const struct ad799x_chip_info ad799x_chip_info_tbl[] = {
[ad7998] = {
.num_inputs = 8,
.bits = 12,
.sign = IIO_SCAN_EL_TYPE_UNSIGNED,
.int_vref_mv = 4096,
.monitor_mode = true,
.default_config = AD7998_ALERT_EN,

2
drivers/staging/iio/adc/ad799x_ring.c
View File

@ -53,7 +53,7 @@ int ad799x_single_channel_from_ring(struct ad799x_state *st, long mask)
mask >>= 1;
}
ret = be16_to_cpu(ring_data[count]) & 0xFFF;
ret = be16_to_cpu(ring_data[count]);
error_free_ring_data:
kfree(ring_data);