This will allow us to have drivers where the channel value
may not be read or written but other information is available.
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
---
drivers/staging/iio/iio.h | 4 +++-
drivers/staging/iio/industrialio-core.c | 5 +++--
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h
index fa6fca0..d96ee4b 100644
--- a/drivers/staging/iio/iio.h
+++ b/drivers/staging/iio/iio.h
@@ -26,7 +26,7 @@ enum iio_data_type {
/* Could add the raw attributes as well - allowing buffer only devices */
enum iio_chan_info_enum {
- /* 0 is reserved for raw attributes */
+ IIO_CHAN_INFO_VALUE = 0,
IIO_CHAN_INFO_SCALE = 1,
IIO_CHAN_INFO_OFFSET,
IIO_CHAN_INFO_CALIBSCALE,
@@ -41,6 +41,8 @@ enum iio_chan_info_enum {
#define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2)
#define IIO_CHAN_INFO_SEPARATE_BIT(type) BIT(type*2 + 1)
+#define IIO_CHAN_INFO_VALUE_SEPARATE_BIT \
+ IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_VALUE)
#define IIO_CHAN_INFO_SCALE_SEPARATE_BIT \
IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_SCALE)
#define IIO_CHAN_INFO_SCALE_SHARED_BIT \
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index d303bfb..a4ac061 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -575,7 +575,8 @@ error_ret:
static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan)
{
- int ret, i, attrcount = 0;
+ int ret, attrcount = 0;
+ int i = 2;
const struct iio_chan_spec_ext_info *ext_info;
if (chan->channel < 0)
@@ -594,7 +595,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
goto error_ret;
attrcount++;
- for_each_set_bit(i, &chan->info_mask, sizeof(long)*8) {
+ for_each_set_bit_from(i, &chan->info_mask, sizeof(long)*8) {
ret = __iio_add_chan_devattr(iio_chan_info_postfix[i/2],
chan,
&iio_read_channel_info,
--
1.7.9.4
--
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