linux-kernel - [PATCH 1/2] dt-bindings: input: cirrus,cs40l50: Support for CS40L50

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Date:   Tue, 8 Aug 2023 17:25:06 +0000
From:   James Ogletree <james.ogletree@...rus.com>
To:     <dmitry.torokhov@...il.com>
CC:     James Ogletree <james.ogletree@...rus.com>,
        Fred Treven <fred.treven@...rus.com>,
        Ben Bright <ben.bright@...rus.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Lee Jones" <lee@...nel.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "Jeff LaBundy" <jeff@...undy.com>, Peng Fan <peng.fan@....com>,
        Eddie James <eajames@...ux.ibm.com>,
        Jean Delvare <jdelvare@...e.de>, Arnd Bergmann <arnd@...db.de>,
        Markus Schneider-Pargmann <msp@...libre.com>,
        Jacky Bai <ping.bai@....com>,
        ChiYuan Huang <cy_huang@...htek.com>,
        Randy Dunlap <rdunlap@...radead.org>, <patches@...rus.com>,
        <linux-input@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] dt-bindings: input: cirrus,cs40l50: Support for CS40L50

Introduce device tree bindings for the initial commit
of the CS40L50 driver.

Change-Id: I95369831f947cb32a0a80e81923fd28ace888481
Signed-off-by: James Ogletree <james.ogletree@...rus.com>
---
 .../bindings/input/cirrus,cs40l50.yaml        | 77 +++++++++++++++++++
 MAINTAINERS                                   |  9 +++
 2 files changed, 86 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/cirrus,cs40l50.yaml

diff --git a/Documentation/devicetree/bindings/input/cirrus,cs40l50.yaml b/Documentation/devicetree/bindings/input/cirrus,cs40l50.yaml
new file mode 100644
index 000000000000..5437c6beb1b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/cirrus,cs40l50.yaml
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/cirrus,cs40l50.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cirrus Logic CS40L50 Advanced Haptic Driver
+
+maintainers:
+  - James Ogletree <james.ogletree@...rus.com>
+
+description:
+  CS40L50 is a Haptic Driver with Waveform Memory DSP
+  and Closed-Loop Algorithms
+
+properties:
+  compatible:
+    enum:
+      - cirrus,cs40l50
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  VA-supply:
+    description: Regulator for analog voltage
+
+  VP-supply:
+    description: Regulator for peak voltage
+
+  VIO-supply:
+    description: Regulator for digital IO voltage
+
+  cirrus,external-boost:
+    description:
+      Bypass the CS40L50 boost converter.
+
+      The amplifier on CS40L50 can be powered internally through the boost
+      converter, or else can be powered using an external supply. If an
+      external VA supply is used, the boost converter must be bypassed.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - reset-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/input/input.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      cs40l50@34 {
+        compatible = "cirrus,cs40l50";
+        reg = <0x34>;
+        interrupt-parent = <&gpio>;
+        interrupts = <113 IRQ_TYPE_LEVEL_LOW>;
+        reset-gpios = <&gpio 112 GPIO_ACTIVE_LOW>;
+        VA-supply = <&dummy_vreg>;
+        VP-supply = <&dummy_vreg>;
+        VIO-supply = <&dummy_vreg>;
+        cirrus,external-boost;
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 54ef320bb689..016e5ff3b831 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2081,6 +2081,15 @@ F:	arch/arm/boot/compressed/misc-ep93xx.h
 F:	arch/arm/mach-ep93xx/
 F:	drivers/iio/adc/ep93xx_adc.c
 
+CIRRUS LOGIC HAPTICS DRIVER
+M:	James Ogletree <james.ogletree@...rus.com>
+M:	Fred Treven <fred.treven@...rus.com>
+M:	Ben Bright <ben.bright@...rus.com>
+L:	patches@...ensource.cirrus.com
+S:	Supported
+T:	git https://github.com/CirrusLogic/linux-drivers.git
+F:	Documentation/devicetree/bindings/input/cirrus,cs40l50.yaml
+
 ARM/CLKDEV SUPPORT
 M:	Russell King <linux@...linux.org.uk>
 L:	linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
-- 
2.25.1