[PATCH 01/10] staging:iio: add a value element to the info_mask

[Jonathan Cameron <jic23@kernel.org>]

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@kernel.org>
---
 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