From: Jiri Valek - 2N <jiriv@axis.com>
To: <krzysztof.kozlowski+dt@linaro.org>, <dmitry.torokhov@gmail.com>
Cc: <jiriv@axis.com>, <devicetree@vger.kernel.org>,
<linux-input@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<robh+dt@kernel.org>, <u.kleine-koenig@pengutronix.de>
Subject: [PATCH v6 1/2] dt-bindings: input: microchip,cap11xx: add advanced sensitivity settings
Date: Tue, 21 Nov 2023 16:52:49 +0100 [thread overview]
Message-ID: <20231121155250.613242-2-jiriv@axis.com> (raw)
In-Reply-To: <20231121155250.613242-1-jiriv@axis.com>
Add support for advanced sensitivity settings and signal guard feature.
Signed-off-by: Jiri Valek - 2N <jiriv@axis.com>
---
.../bindings/input/microchip,cap11xx.yaml | 80 ++++++++++++++++++-
1 file changed, 77 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml b/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml
index 5b5d4f7d3482..7f20c2cd53a8 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 +70,59 @@ 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:
+ Controls the sensitivity multiplier of a touch detection.
+ Higher value means more sensitive settings.
+ At the more sensitive settings, touches are detected for a smaller delta
+ capacitance corresponding to a "lighter" touch.
+
+ microchip,signal-guard:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 3
+ maxItems: 8
+ items:
+ enum: [0, 1]
+ description: |
+ 0 - off
+ 1 - on
+ 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-threshold:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 3
+ maxItems: 8
+ items:
+ minimum: 0
+ maximum: 127
+ description:
+ Specifies the delta threshold that is used to determine if a touch has
+ been detected. A higher value means a larger difference in capacitance
+ is required for a touch to be registered, making the touch sensor less
+ sensitive.
+ The number of entries must correspond to the number of channels.
+
+ microchip,calib-sensitivity:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 3
+ maxItems: 8
+ items:
+ enum: [1, 2, 4]
+ description: |
+ Specifies an array of numeric values that controls the gain
+ used by the calibration routine to enable sensor inputs
+ to be more sensitive for proximity detection.
+ Gain is based on touch pad capacitance range
+ 1 - 5-50pF
+ 2 - 0-25pF
+ 4 - 0-12.5pF
+ The number of entries must correspond to the number of channels.
+
patternProperties:
"^led@[0-7]$":
type: object
@@ -99,10 +152,29 @@ allOf:
contains:
enum:
- microchip,cap1106
+ - microchip,cap1203
+ - microchip,cap1206
+ - microchip,cap1293
+ - microchip,cap1298
then:
patternProperties:
"^led@[0-7]$": false
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - microchip,cap1106
+ - microchip,cap1126
+ - microchip,cap1188
+ - microchip,cap1203
+ - microchip,cap1206
+ then:
+ properties:
+ microchip,signal-guard: false
+ microchip,calib-sensitivity: false
+
required:
- compatible
- interrupts
@@ -122,6 +194,8 @@ examples:
reg = <0x28>;
autorepeat;
microchip,sensor-gain = <2>;
+ microchip,sensitivity-delta-sense = <16>;
+ microchip,input-threshold = <21>, <18>, <46>, <46>, <46>, <21>;
linux,keycodes = <103>, /* KEY_UP */
<106>, /* KEY_RIGHT */
--
2.25.1
next prev parent reply other threads:[~2023-11-21 15:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-21 15:52 [PATCH v6 0/2] Input: cap11xx add advanced sensitivity settings Jiri Valek - 2N
2023-11-21 15:52 ` Jiri Valek - 2N [this message]
2023-11-22 8:29 ` [PATCH v6 1/2] dt-bindings: input: microchip,cap11xx: " Krzysztof Kozlowski
2023-12-13 3:18 ` Dmitry Torokhov
2023-11-21 15:52 ` [PATCH v6 2/2] Input: cap11xx - " Jiri Valek - 2N
2023-12-13 3:18 ` Dmitry Torokhov
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