Changes from v1: - improved led_parse_properties() to parse label property at first and return immediately after parsing succeeds - added tool get_led_device_info.sh 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. Original cover letter: LED class device naming pattern included devicename section, which had unpleasant effect of varying userspace interface dependent on underlaying hardware. Moreover, this information was redundant in the LED name, since the LED controller name could have been obtained from sysfs device group This patch set introduces a led_compose_name() function in the LED core, which unifies and simplifies LED class device name composition. This change is accompanied by the improvements in the common LED DT bindings where two new properties are introduced: "function" and "color" . The two deprecate the old "label" property which was leaving too much room for interpretation, leading to inconsistent LED naming. There are also changes in LED DT node naming, which are in line with DT maintainer's request from [0]. Since some DT LED naming unification, related to not including devicename section in "label" DT property, is being requested during reviews of new LED class drivers for almost a year now, then those drivers are the first candidates for optimalization and the first users of the new led_compose_name() API. The modifications were tested with Qemu, by stubbing the driver internals where hardware interaction was needed for proper probing. Thanks, Jacek Anaszewski [0] https://lore.kernel.org/patchwork/patch/858993/ Jacek Anaszewski (25): leds: class: Improve LED and LED flash class registration API leds: core: Add support for composing LED class device names dt-bindings: leds: Add LED_FUNCTION definitions dt-bindings: leds: Add LED_COLOR_NAME definitions dt-bindings: leds: Add function and color properties dt-bindings: sc27xx-blt: Add function and color properties leds: sc27xx-blt: Use led_compose_name() dt-bindings: lt3593: Add function and color properties leds: lt3593: Use led_compose_name() dt-bindings: lp8860: Add function and color properties leds: lp8860: Use led_compose_name() dt-bindings: lm3692x: Add function and color properties leds: lm3692x: Use led_compose_name() dt-bindings: lm36010: Add function and color properties leds: lm3601x: Use led_compose_name() dt-bindings: cr0014114: Add function and color properties leds: cr0014114: Use led_compose_name() dt-bindings: aat1290: Add function and color properties leds: aat1290: Use led_compose_name() dt-bindings: as3645a: Add function and color properties leds: as3645a: Use led_compose_name() dt-bindings: leds-gpio: Add function and color properties leds: gpio: Use led_compose_name() dt-bindings: an30259a: Add function and color properties leds: an30259a: Use led_compose_name() .../devicetree/bindings/leds/ams,as3645a.txt | 22 +++--- Documentation/devicetree/bindings/leds/common.txt | 55 ++++++++++++--- .../devicetree/bindings/leds/leds-aat1290.txt | 12 ++-- .../devicetree/bindings/leds/leds-an30259a.txt | 22 ++++-- .../devicetree/bindings/leds/leds-cr0014114.txt | 26 +++++-- .../devicetree/bindings/leds/leds-gpio.txt | 23 ++++-- .../devicetree/bindings/leds/leds-lm3601x.txt | 10 ++- .../devicetree/bindings/leds/leds-lm3692x.txt | 9 ++- .../devicetree/bindings/leds/leds-lp8860.txt | 9 ++- .../devicetree/bindings/leds/leds-lt3593.txt | 11 ++- .../devicetree/bindings/leds/leds-sc27xx-bltc.txt | 10 +-- Documentation/leds/leds-class.txt | 20 +++++- drivers/leds/led-class-flash.c | 9 +-- drivers/leds/led-class.c | 34 +++++---- drivers/leds/led-core.c | 82 ++++++++++++++++++++++ drivers/leds/leds-aat1290.c | 17 +++-- drivers/leds/leds-an30259a.c | 26 +++---- drivers/leds/leds-as3645a.c | 73 ++++++++----------- drivers/leds/leds-cr0014114.c | 30 +++----- drivers/leds/leds-gpio.c | 26 +++---- drivers/leds/leds-lm3601x.c | 45 ++++++------ drivers/leds/leds-lm3692x.c | 39 +++++----- drivers/leds/leds-lp8860.c | 38 +++++----- drivers/leds/leds-lt3593.c | 19 +++-- drivers/leds/leds-sc27xx-bltc.c | 23 +++--- include/dt-bindings/leds/common.h | 47 +++++++++++++ include/linux/led-class-flash.h | 15 ++-- include/linux/leds.h | 68 +++++++++++++++--- tools/leds/get_led_device_info.sh | 81 +++++++++++++++++++++ 29 files changed, 639 insertions(+), 262 deletions(-) create mode 100755 tools/leds/get_led_device_info.sh -- 2.11.0
