linux-kernel - [PATCH v5 1/2] Documentation: leds: standardise keyboard backlight led names

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Date:   Mon, 20 Feb 2023 22:52:02 +1100
From:   Orlando Chamberlain <orlandoch.dev@...il.com>
To:     linux-doc@...r.kernel.org, linux-input@...r.kernel.org
Cc:     Jonathan Corbet <corbet@....net>, Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        linux-kernel@...r.kernel.org, Pavel Machek <pavel@....cz>,
        Aditya Garg <gargaditya08@...e.com>,
        Aun-Ali Zaidi <admin@...eit.net>,
        Kerem Karabay <kekrby@...il.com>,
        Andy Shevchenko <andy@...radead.org>,
        Thomas Weißschuh <thomas@...ch.de>,
        Orlando Chamberlain <orlandoch.dev@...il.com>
Subject: [PATCH v5 1/2] Documentation: leds: standardise keyboard backlight led names

Advice use of either "input*:*:kbd_backlight" or ":*:kbd_backlight". We
don't want people using vendor or product name (e.g. "smc", "apple",
"asus") as this information is available from sysfs anyway, and it made the
folder names inconsistent.

Signed-off-by: Orlando Chamberlain <orlandoch.dev@...il.com>
---
 Documentation/leds/well-known-leds.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/leds/well-known-leds.txt b/Documentation/leds/well-known-leds.txt
index 2160382c86be..4e5429fce4d8 100644
--- a/Documentation/leds/well-known-leds.txt
+++ b/Documentation/leds/well-known-leds.txt
@@ -44,6 +44,14 @@ Legacy: "lp5523:kb{1,2,3,4,5,6}" (Nokia N900)
 
 Frontlight/backlight of main keyboard.
 
+Good: ":*:kbd_backlight"
+Good: "input*:*:kbd_backlight"
+Legacy: "*:*:kbd_backlight"
+
+Many drivers have the vendor or product name as the first field of the led name,
+this makes names inconsistent and is redundant as that information is already in
+sysfs.
+
 Legacy: "button-backlight" (Motorola Droid 4)
 
 Some phones have touch buttons below screen; it is different from main
-- 
2.39.2