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iio: core: Add optional symbolic label to device attributes

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If a label is defined in the device tree for this device add that
to the device specific attributes. This is useful for userspace to
be able to identify an individual device when multiple identical
chips are present in the system.

Tested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Phil Reid
2019-09-19 22:36:08 +08:00
committed by Jonathan Cameron
parent dc7fe512d9
commit 2c3d0c9ffd
2 changed files with 19 additions and 0 deletions
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2
include/linux/iio/iio.h
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@@ -510,6 +510,7 @@ struct iio_buffer_setup_ops {
* attributes
* @chan_attr_group: [INTERN] group for all attrs in base directory
* @name: [DRIVER] name of the device.
* @label: [DRIVER] unique name to identify which device this is
* @info: [DRIVER] callbacks and constant info from driver
* @clock_id: [INTERN] timestamping clock posix identifier
* @info_exist_lock: [INTERN] lock to prevent use during removal
@@ -553,6 +554,7 @@ struct iio_dev {
struct list_head channel_attr_list;
struct attribute_group chan_attr_group;
const char *name;
const char *label;
const struct iio_info *info;
clockid_t clock_id;
struct mutex info_exist_lock;