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iio: add info_mask_[shared_by_dir/shared_by_all]

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These two additional info_mask bitmaps should allow all 'standard'
numeric attributes to be handled using the read_raw and write_raw
callbacks.  Whilst this should reduce code, the more important element
is that this makes these values easily accessible to in kernel users
of IIO devices.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
This commit is contained in:
Jonathan Cameron
2013-09-08 14:57:00 +01:00
parent 3704432fb1
commit c006ec8384
2 changed files with 42 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/iio/iio.h
+12 -2
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@@ -41,7 +41,9 @@ enum iio_chan_info_enum {
enum iio_shared_by {
IIO_SEPARATE,
IIO_SHARED_BY_TYPE
IIO_SHARED_BY_TYPE,
IIO_SHARED_BY_DIR,
IIO_SHARED_BY_ALL
};
enum iio_endian {
@@ -156,6 +158,10 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
* this channel.
* @info_mask_shared_by_type: What information is to be exported that is shared
* by all channels of the same type.
* @info_mask_shared_by_dir: What information is to be exported that is shared
* by all channels of the same direction.
* @info_mask_shared_by_all: What information is to be exported that is shared
* by all channels.
* @event_mask: What events can this channel produce.
* @ext_info: Array of extended info attributes for this channel.
* The array is NULL terminated, the last element should
@@ -192,6 +198,8 @@ struct iio_chan_spec {
} scan_type;
long info_mask_separate;
long info_mask_shared_by_type;
long info_mask_shared_by_dir;
long info_mask_shared_by_all;
long event_mask;
const struct iio_chan_spec_ext_info *ext_info;
const char *extend_name;
@@ -215,7 +223,9 @@ static inline bool iio_channel_has_info(const struct iio_chan_spec *chan,
enum iio_chan_info_enum type)
{
return (chan->info_mask_separate & BIT(type)) |
(chan->info_mask_shared_by_type & BIT(type));
(chan->info_mask_shared_by_type & BIT(type)) |
(chan->info_mask_shared_by_dir & BIT(type)) |
(chan->info_mask_shared_by_all & BIT(type));
}
#define IIO_ST(si, rb, sb, sh) \