diff options
| author | Alexandru Ardelean <alexandru.ardelean@analog.com> | 2021-02-15 12:40:31 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-03-11 20:47:03 +0000 |
| commit | d9a625744ed0e452f5c495cd8c51eed4b6623a4c (patch) | |
| tree | 798cbe53e3d2fdfa56164158b88d62a1ab5a97d6 /include/linux/iio/iio-opaque.h | |
| parent | e2b4d7aca9db5c1f0789e5a8e0fd1f4953d0be9e (diff) | |
iio: core: merge buffer/ & scan_elements/ attributes
With this change, we create a new directory for the IIO device called
buffer0, under which both the old buffer/ and scan_elements/ are stored.
This is done to simplify the addition of multiple IIO buffers per IIO
device. Otherwise we would need to add a bufferX/ and scan_elementsX/
directory for each IIO buffer.
With the current way of storing attribute groups, we can't have directories
stored under each other (i.e. scan_elements/ under buffer/), so the best
approach moving forward is to merge their attributes.
The old/legacy buffer/ & scan_elements/ groups are not stored on the opaque
IIO device object. This way the IIO buffer can have just a single
attribute_group object, saving a bit of memory when adding multiple IIO
buffers.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210215104043.91251-13-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'include/linux/iio/iio-opaque.h')
| -rw-r--r-- | include/linux/iio/iio-opaque.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h index 8ba13a5c7af6..1a9310b0145f 100644 --- a/include/linux/iio/iio-opaque.h +++ b/include/linux/iio/iio-opaque.h @@ -14,6 +14,8 @@ * @ioctl_handlers: ioctl handlers registered with the core handler * @groups: attribute groups * @groupcounter: index of next attribute group + * @legacy_scan_el_group: attribute group for legacy scan elements attribute group + * @legacy_buffer_group: attribute group for legacy buffer attributes group * @debugfs_dentry: device specific debugfs dentry * @cached_reg_addr: cached register address for debugfs reads * @read_buf: read buffer to be used for the initial reg read @@ -28,6 +30,8 @@ struct iio_dev_opaque { struct list_head ioctl_handlers; const struct attribute_group **groups; int groupcounter; + struct attribute_group legacy_scan_el_group; + struct attribute_group legacy_buffer_group; #if defined(CONFIG_DEBUG_FS) struct dentry *debugfs_dentry; unsigned cached_reg_addr; |