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SubjectRe: [PATCH v2 00/25] Add generic support for composing LED class device name
On Sun, Mar 10, 2019 at 07:28:11PM +0100, Jacek Anaszewski wrote:
> Changes from v1:
> - improved led_parse_properties() to parse label property at first
> and return immediately after parsing succeeds
> - added tool for retrieving LED class device's
> parent device related information
> - extended LED naming section of Documentation/leds/leds-class.txt
> - adjusted the list of LED_FUNCTION definitions according to the v1 review
> remarks
> - added standard LED_COLOR_NAME definitions
> - removed functions.h and moved both LED_FUNCTION and LED_COLOR_NAME
> definitions to include/dt-bindings/common.h
> - rebased leds-as3645a changes on top of the patch switching to fwnode
> property API
> - updated DT bindings to use new LED_COLOR_NAME definitions
> - improved common LED bindings to not use address unit for sub-nodes
> without reg property
> Generally I still insist on deprecating label property and devicename
> section of LED name. The tool I added for obtaining LED device name
> proves availability of the related information in other places in
> the sysfs. Other discussed use cases are covered in the updated
> Documentation/leds/leds-class.txt.
> Beside that, I tried also to create macros for automatic composition
> of "-N" suffixed LED functions, so that it would not be necessary
> to pollute common.h with plenty repetitions of the same function,
> differing only with the postfix. Unfortunately, the preprocessor
> of the dtc compiler seems not to accept string concatenetation.
> I.e. it is not possible to to the following assighment:
> function = "hdd""-1"
> If anyone knows how to obviate this shortocoming please let me know.

Raise the question on devicetree-compiler list. I've done my share of
dtc patches, but the parsing side is generally not an area I touch.


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