Add support for advanced sensitivity settings and signal guard feature.
Signed-off-by: Jiri Valek - 2N <jiriv@xxxxxxxx>
---
.../bindings/input/microchip,cap11xx.yaml | 64 ++++++++++++++++++-
1 file changed, 61 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml b/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml
index 5fa625b5c5fb..08e28226a164 100644
--- a/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml
+++ b/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml
@@ -45,13 +45,13 @@ properties:
Enables the Linux input system's autorepeat feature on the input device.
linux,keycodes:
- minItems: 6
- maxItems: 6
+ minItems: 3
+ maxItems: 8
description: |
Specifies an array of numeric keycode values to
be used for the channels. If this property is
omitted, KEY_A, KEY_B, etc are used as defaults.
- The array must have exactly six entries.
+ The number of entries must correspond to the number of channels.
microchip,sensor-gain:
$ref: /schemas/types.yaml#/definitions/uint32
@@ -70,6 +70,58 @@ properties:
open drain. This property allows using the active
high push-pull output.
+ microchip,sensitivity-delta-sense:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 32
+ enum: [1, 2, 4, 8, 16, 32, 64, 128]
+ description: |
+ Optional parameter. Controls the sensitivity multiplier of a touch detection.
+ At the more sensitive settings, touches are detected for a smaller delta
+ capacitance corresponding to a “lighter” touch.
+
+ microchip,sensitivity-base-shift:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 256
+ enum: [1, 2, 4, 8, 16, 32, 64, 128, 256]
+ description: |
+ Optional parameter. Controls data scaling factor.
+ The higher the value of these bits, the larger the range and the lower
+ the resolution of the data presented. These settings will not affect
+ touch detection or sensitivity.
+
+ microchip,signal-guard:
+ minItems: 3
+ maxItems: 8
+ enum: [0, 1]
+ default: 0
+ description: |
+ Optional parameter supported only for CAP129x.
+ The signal guard isolates the signal from virtual grounds.
+ If enabled then the behavior of the channel is changed to signal guard.
+ The number of entries must correspond to the number of channels.
+
+ microchip,input-treshold:
+ minItems: 3
+ maxItems: 8
+ minimum: 0
+ maximum: 127
+ default: 64
+ description: |
+ Optional parameter. Specifies the delta threshold that is used to
+ determine if a touch has been detected.
+ The number of entries must correspond to the number of channels.
+
+ microchip,calib-sensitivity:
+ minItems: 3
+ maxItems: 8
+ enum: [1, 2, 4]
+ default: 1
+ description: |
+ Optional parameter supported only for CAP129x. Specifies an array of
+ numeric values that controls the gain used by the calibration routine to
+ enable sensor inputs to be more sensitive for proximity detection.
+ The number of entries must correspond to the number of channels.
+
patternProperties:
"^led@[0-7]$":
type: object
@@ -122,6 +174,12 @@ examples:
reg = <0x28>;
autorepeat;
microchip,sensor-gain = <2>;
+ microchip,sensitivity-delta-sense = <16>;
+ microchip,sensitivity-base-shift = <128>;
+
+ microchip,signal-guard = <0>, <0>, <0>, <0>, <0>, <0>;
+ microchip,input-treshold = <21>, <18>, <46>, <46>, <46>, <21>;
+ microchip,calib-sensitivityj = <1>, <2>, <2>, <1>, <1>, <2>;
linux,keycodes = <103>, /* KEY_UP */
<106>, /* KEY_RIGHT */
--
2.25.1
