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staging:iio: Add IIO_CHAN_INFO_RAW entries to the dummy driver 

Precursor to making value read / write attribute optional.
No processed values in resolvers at the moment.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Lars-Peter Clausen 2012-04-15 17:41:27 +01:00 committed by Greg Kroah-Hartman
parent e33e075082
commit 41fd935b18
1 changed files with 17 additions and 2 deletions
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19
drivers/staging/iio/iio_simple_dummy.c
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@ -72,6 +72,12 @@ static struct iio_chan_spec iio_dummy_channels[] = {
.channel = 0,
/* What other information is available? */
.info_mask =
/*
* in_voltage0_raw
* Raw (unscaled no bias removal etc) measurement
* from the device.
*/
IIO_CHAN_INFO_RAW_SEPARATE_BIT |
/*
* in_voltage0_offset
* Offset for userspace to apply prior to scale
@ -113,6 +119,12 @@ static struct iio_chan_spec iio_dummy_channels[] = {
.channel = 1,
.channel2 = 2,
.info_mask =
/*
* in_voltage1-voltage2_raw
* Raw (unscaled no bias removal etc) measurement
* from the device.
*/
IIO_CHAN_INFO_RAW_SEPARATE_BIT |
/*
* in_voltage-voltage_scale
* Shared version of scale - shared by differential
@ -135,6 +147,7 @@ static struct iio_chan_spec iio_dummy_channels[] = {
.channel = 3,
.channel2 = 4,
.info_mask =
IIO_CHAN_INFO_RAW_SEPARATE_BIT |
IIO_CHAN_INFO_SCALE_SHARED_BIT,
.scan_index = diffvoltage3m4,
.scan_type = {
@ -154,6 +167,7 @@ static struct iio_chan_spec iio_dummy_channels[] = {
/* Channel 2 is use for modifiers */
.channel2 = IIO_MOD_X,
.info_mask =
IIO_CHAN_INFO_RAW_SEPARATE_BIT |
/*
* Internal bias correction value. Applied
* by the hardware or driver prior to userspace
@ -177,6 +191,7 @@ static struct iio_chan_spec iio_dummy_channels[] = {
/* DAC channel out_voltage0_raw */
{
.type = IIO_VOLTAGE,
.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
.output = 1,
.indexed = 1,
.channel = 0,
@ -203,7 +218,7 @@ static int iio_dummy_read_raw(struct iio_dev *indio_dev,
mutex_lock(&st->lock);
switch (mask) {
case 0: /* magic value - channel value read */
case IIO_CHAN_INFO_RAW: /* magic value - channel value read */
switch (chan->type) {
case IIO_VOLTAGE:
if (chan->output) {
@ -290,7 +305,7 @@ static int iio_dummy_write_raw(struct iio_dev *indio_dev,
struct iio_dummy_state *st = iio_priv(indio_dev);
switch (mask) {
case 0:
case IIO_CHAN_INFO_RAW:
if (chan->output == 0)
return -EINVAL;