[PATCH 09/14] dt-bindings: input: samsung,s3c6410-keypad: introduce compact binding

[Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>]

The binding with a sub-node per each key is very verbose and is hard to
use with static device properties. Allow standard matrix keymap binding
in addition to the verbose one.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
 .../input/samsung,s3c6410-keypad.yaml         | 57 ++++++++++++++++++-
 1 file changed, 54 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/input/samsung,s3c6410-keypad.yaml b/Documentation/devicetree/bindings/input/samsung,s3c6410-keypad.yaml
index a53569aa0ee7..28a318a0ff7e 100644
--- a/Documentation/devicetree/bindings/input/samsung,s3c6410-keypad.yaml
+++ b/Documentation/devicetree/bindings/input/samsung,s3c6410-keypad.yaml
@@ -16,6 +16,10 @@ description:
 maintainers:
   - Krzysztof Kozlowski <krzk@xxxxxxxxxx>
 
+allOf:
+  - $ref: input.yaml#
+  - $ref: matrix-keymap.yaml#
+
 properties:
   compatible:
     enum:
@@ -37,6 +41,10 @@ properties:
 
   wakeup-source: true
 
+  keypad,num-columns: true
+  keypad,num-rows: true
+  linux,keymap: true
+
   linux,input-no-autorepeat:
     type: boolean
     description:
@@ -81,12 +89,33 @@ patternProperties:
       - keypad,row
       - linux,code
 
+dependencies:
+  linux,keymap:
+    required:
+      - keypad,num-columns
+      - keypad,num-rows
+
 required:
   - compatible
   - reg
   - interrupts
-  - samsung,keypad-num-columns
-  - samsung,keypad-num-rows
+
+if:
+  required:
+    - linux,keymap
+then:
+  properties:
+    samsung,keypad-num-columns: false
+    samsung,keypad-num-rows: false
+  patternProperties:
+    '^key-[0-9a-z]+$': false
+else:
+  properties:
+    keypad,num-columns: false
+    keypad,num-rows: false
+  required:
+    - samsung,keypad-num-columns
+    - samsung,keypad-num-rows
 
 additionalProperties: false
 
@@ -94,8 +123,9 @@ examples:
   - |
     #include <dt-bindings/clock/exynos4.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/input/input.h>
 
-    keypad@100a0000 {
+    keypad1@100a0000 {
         compatible = "samsung,s5pv210-keypad";
         reg = <0x100a0000 0x100>;
         interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
@@ -119,3 +149,24 @@ examples:
             linux,code = <3>;
         };
     };
+  - |
+    #include <dt-bindings/clock/exynos4.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/input/input.h>
+
+    keypad2@100a0000 {
+        compatible = "samsung,s5pv210-keypad";
+        reg = <0x100a0000 0x100>;
+        interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clock CLK_KEYIF>;
+        clock-names = "keypad";
+
+        keypad,num-rows = <2>;
+        keypad,num-columns = <8>;
+        linux,keymap = <
+          MATRIX_KEY(0, 3, 2)
+          MATRIX_KEY(0, 4, 3)
+        >;
+        linux,input-no-autorepeat;
+        wakeup-source;
+    };
-- 
2.46.0.184.g6999bdac58-goog