[PATCH 7/7] Document difference in reader mode handling between pre-2018 models, and the later models.

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Document the reader mode changes in 2018 and later models.

Signed-off-by: Matan Ziv-Av <matan@xxxxxxxxxxx>
---
 Documentation/admin-guide/laptops/lg-laptop.rst | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/Documentation/admin-guide/laptops/lg-laptop.rst b/Documentation/admin-guide/laptops/lg-laptop.rst
index ce9b14671cb9..ebdbf2f44e70 100644
--- a/Documentation/admin-guide/laptops/lg-laptop.rst
+++ b/Documentation/admin-guide/laptops/lg-laptop.rst
@@ -14,6 +14,7 @@ The following FN keys are ignored by the kernel without this driver:
 
 - FN-F1 (LG control panel)   - Generates F15
 - FN-F5 (Touchpad toggle)    - Generates F13
+  On 2019 model, the firmware also generates "125-29-85" key codes.
 - FN-F6 (Airplane mode)      - Generates RFKILL
 - FN-F8 (Keyboard backlight) - Generates F16.
   This key also changes keyboard backlight mode.
@@ -27,7 +28,8 @@ Reader mode
 
 Writing 0/1 to /sys/devices/platform/lg-laptop/reader_mode disables/enables
 reader mode. In this mode the screen colors change (blue color reduced),
-and the reader mode indicator LED (on F9 key) turns on.
+and the reader mode indicator LED (on F9 key) turns on. Only available on
+2016 and 2017 models.
 
 
 FN Lock
@@ -66,7 +68,7 @@ This value is reset to 0 when the kernel boots.
 LEDs
 ~~~~
 
-The are two LED devices supported by the driver:
+The are two or three LED devices supported by the driver:
 
 Keyboard backlight
 ------------------
@@ -82,3 +84,10 @@ Touchpad indicator LED
 ----------------------
 
 On the F5 key. Controlled by led device names tpad_led.
+
+
+Reader mode LED
+---------------
+
+On the F8 Key. Controlled by led device named reader_mode_led. Only available
+on 2018 and later models.
-- 
2.21.0




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