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Wed, 12 Mar 2025 03:43:54 -0700 (PDT) From: Chen-Yu Tsai To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Benson Leung , Tzung-Bi Shih , Dmitry Torokhov Cc: Chen-Yu Tsai , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, chrome-platform@lists.linux.dev, linux-input@vger.kernel.org, Douglas Anderson Subject: [PATCH 1/8] dt-bindings: HID: i2c-hid: elan: Introduce Elan eKTH8D18 Date: Wed, 12 Mar 2025 18:43:35 +0800 Message-ID: <20250312104344.3084425-2-wenst@chromium.org> X-Mailer: git-send-email 2.49.0.rc0.332.g42c0ae87b1-goog In-Reply-To: <20250312104344.3084425-1-wenst@chromium.org> References: <20250312104344.3084425-1-wenst@chromium.org> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The Elan eKTH8D18 touchscreen controller is an I2C HID device with a longer boot-up time. Power sequence timing wise it is compatible with the eKTH6A12NAY, with a power-on delay of at least 5ms, 20ms out-of-reset for I2C ack response, and 150ms out-of-reset for I2C HID enumeration. Enumeration and subsequent operation follows the I2C HID standard. The eKTH6A12NAY requires longer times for both parts. Add a compatible string for it with the ekth6a12nay one as a fallback. Signed-off-by: Chen-Yu Tsai --- .../bindings/input/elan,ekth6915.yaml | 29 ++++++++++++++++--- 1 file changed, 25 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml index cb3e1801b0d3..81c391952ccc 100644 --- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml +++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml @@ -4,14 +4,14 @@ $id: http://devicetree.org/schemas/input/elan,ekth6915.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: Elan eKTH6915 touchscreen controller +title: Elan I2C-HID touchscreen controllers maintainers: - Douglas Anderson description: - Supports the Elan eKTH6915 touchscreen controller. - This touchscreen controller uses the i2c-hid protocol with a reset GPIO. + Supports the Elan eKTH6915 and other I2C-HID touchscreen controllers. + These touchscreen controller use the i2c-hid protocol with a reset GPIO. allOf: - $ref: /schemas/input/touchscreen/touchscreen.yaml# @@ -23,12 +23,18 @@ properties: - enum: - elan,ekth5015m - const: elan,ekth6915 + - items: + - enum: + - elan,ekth8d18 + - const: elan,ekth6a12nay - enum: - elan,ekth6915 - elan,ekth6a12nay reg: - const: 0x10 + enum: + - 0x10 + - 0x16 interrupts: maxItems: 1 @@ -58,6 +64,21 @@ required: - interrupts - vcc33-supply +if: + properties: + compatible: + contains: + enum: + - elan,ekth8d18 +then: + properties: + reg: + const: 0x16 +else: + properties: + reg: + const: 0x10 + additionalProperties: false examples: From patchwork Wed Mar 12 10:43:37 2025 Content-Type: text/plain; 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Wed, 12 Mar 2025 03:44:00 -0700 (PDT) From: Chen-Yu Tsai To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Benson Leung , Tzung-Bi Shih , Dmitry Torokhov Cc: Chen-Yu Tsai , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, chrome-platform@lists.linux.dev, linux-input@vger.kernel.org, Douglas Anderson Subject: [PATCH 3/8] dt-bindings: arm: mediatek: Add MT8186 Squirtle Chromebooks Date: Wed, 12 Mar 2025 18:43:37 +0800 Message-ID: <20250312104344.3084425-4-wenst@chromium.org> X-Mailer: git-send-email 2.49.0.rc0.332.g42c0ae87b1-goog In-Reply-To: <20250312104344.3084425-1-wenst@chromium.org> References: <20250312104344.3084425-1-wenst@chromium.org> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add an entry for the MT8186 based Squirtle Chromebooks, also known as the Acer Chromebook Spin 311 (R724T). The device is a 2-in-1 convertible. Signed-off-by: Chen-Yu Tsai --- Documentation/devicetree/bindings/arm/mediatek.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml index 49ddc504c160..f0b4ccd81c4d 100644 --- a/Documentation/devicetree/bindings/arm/mediatek.yaml +++ b/Documentation/devicetree/bindings/arm/mediatek.yaml @@ -291,6 +291,10 @@ properties: - const: google,steelix-sku196608 - const: google,steelix - const: mediatek,mt8186 + - description: Google Squirtle (Acer Chromebook Spin 311 (R724T) + items: + - const: google,squirtle + - const: mediatek,mt8186 - description: Google Starmie (ASUS Chromebook Enterprise CM30 (CM3001)) items: - const: google,starmie-sku0 From patchwork Wed Mar 12 10:43:39 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 872943 Received: from mail-pj1-f48.google.com (mail-pj1-f48.google.com [209.85.216.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F817243951 for ; 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Wed, 12 Mar 2025 03:44:07 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:b5ed:b71c:fb14:a696]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3011926599csm1405675a91.35.2025.03.12.03.44.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Mar 2025 03:44:07 -0700 (PDT) From: Chen-Yu Tsai To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Benson Leung , Tzung-Bi Shih , Dmitry Torokhov Cc: Chen-Yu Tsai , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, chrome-platform@lists.linux.dev, linux-input@vger.kernel.org, Douglas Anderson Subject: [PATCH 5/8] arm64: dts: mediatek: mt8186: Merge Voltorb device trees Date: Wed, 12 Mar 2025 18:43:39 +0800 Message-ID: <20250312104344.3084425-6-wenst@chromium.org> X-Mailer: git-send-email 2.49.0.rc0.332.g42c0ae87b1-goog In-Reply-To: <20250312104344.3084425-1-wenst@chromium.org> References: <20250312104344.3084425-1-wenst@chromium.org> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There are only two different SKUs of Voltorb, and the only difference between them is whether a touchscreen is present or not. This can be detected by a simple I2C transfer to the address, instead of having separate device trees. Merge the two device trees together and simplify the compatible string list. The dtsi is still kept separate since there is an incoming device that shares the same design, but with slightly difference components. Signed-off-by: Chen-Yu Tsai --- arch/arm64/boot/dts/mediatek/Makefile | 3 +-- .../mediatek/mt8186-corsola-voltorb-sku589824.dts | 13 ------------- ...orb-sku589825.dts => mt8186-corsola-voltorb.dts} | 5 ++--- 3 files changed, 3 insertions(+), 18 deletions(-) delete mode 100644 arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb-sku589824.dts rename arch/arm64/boot/dts/mediatek/{mt8186-corsola-voltorb-sku589825.dts => mt8186-corsola-voltorb.dts} (76%) diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile index 58484e830063..ff67931e7821 100644 --- a/arch/arm64/boot/dts/mediatek/Makefile +++ b/arch/arm64/boot/dts/mediatek/Makefile @@ -73,8 +73,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-corsola-tentacool-sku327681.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-corsola-tentacool-sku327683.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-corsola-tentacruel-sku262144.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-corsola-tentacruel-sku262148.dtb -dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-corsola-voltorb-sku589824.dtb -dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-corsola-voltorb-sku589825.dtb +dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-corsola-voltorb.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8186-evb.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8188-evb.dtb dtb-$(CONFIG_ARCH_MEDIATEK) += mt8188-geralt-ciri-sku0.dtb diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb-sku589824.dts b/arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb-sku589824.dts deleted file mode 100644 index d16834eec87a..000000000000 --- a/arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb-sku589824.dts +++ /dev/null @@ -1,13 +0,0 @@ -// SPDX-License-Identifier: (GPL-2.0 OR MIT) -/* - * Copyright 2022 Google LLC - */ - -/dts-v1/; -#include "mt8186-corsola-voltorb.dtsi" - -/ { - model = "Google Voltorb sku589824 board"; - compatible = "google,voltorb-sku589824", "google,voltorb", - "mediatek,mt8186"; -}; diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb-sku589825.dts b/arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb.dts similarity index 76% rename from arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb-sku589825.dts rename to arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb.dts index 45e57f7706cc..cc805408a8b7 100644 --- a/arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb-sku589825.dts +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola-voltorb.dts @@ -7,9 +7,8 @@ #include "mt8186-corsola-voltorb.dtsi" / { - model = "Google Voltorb sku589825 board"; - compatible = "google,voltorb-sku589825", "google,voltorb", - "mediatek,mt8186"; + model = "Google Voltorb board"; + compatible = "google,voltorb", "mediatek,mt8186"; }; &i2c1 { From patchwork Wed Mar 12 10:43:41 2025 Content-Type: text/plain; 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Wed, 12 Mar 2025 03:44:13 -0700 (PDT) From: Chen-Yu Tsai To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Benson Leung , Tzung-Bi Shih , Dmitry Torokhov Cc: Chen-Yu Tsai , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, chrome-platform@lists.linux.dev, linux-input@vger.kernel.org, Douglas Anderson Subject: [PATCH 7/8] platform/chrome: of_hw_prober: Support trackpad probing on Corsola family Date: Wed, 12 Mar 2025 18:43:41 +0800 Message-ID: <20250312104344.3084425-8-wenst@chromium.org> X-Mailer: git-send-email 2.49.0.rc0.332.g42c0ae87b1-goog In-Reply-To: <20250312104344.3084425-1-wenst@chromium.org> References: <20250312104344.3084425-1-wenst@chromium.org> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Various MT8186 Corsola Chromebooks (squirtle, steelix and voltorb families) have second source trackpads that need to be probed. The power supply for these are always on and their reset/enable lines are not exposed. Add them to the probing list. Signed-off-by: Chen-Yu Tsai --- drivers/platform/chrome/chromeos_of_hw_prober.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/platform/chrome/chromeos_of_hw_prober.c b/drivers/platform/chrome/chromeos_of_hw_prober.c index c6992f5cdc76..eb01851e1cf5 100644 --- a/drivers/platform/chrome/chromeos_of_hw_prober.c +++ b/drivers/platform/chrome/chromeos_of_hw_prober.c @@ -57,6 +57,7 @@ static int chromeos_i2c_component_prober(struct device *dev, const void *_data) } DEFINE_CHROMEOS_I2C_PROBE_DATA_DUMB_BY_TYPE(touchscreen); +DEFINE_CHROMEOS_I2C_PROBE_DATA_DUMB_BY_TYPE(trackpad); DEFINE_CHROMEOS_I2C_PROBE_CFG_SIMPLE_BY_TYPE(trackpad); @@ -84,6 +85,18 @@ static const struct hw_prober_entry hw_prober_platforms[] = { .compatible = "google,hana", .prober = chromeos_i2c_component_prober, .data = &chromeos_i2c_probe_hana_trackpad, + }, { + .compatible = "google,squirtle", + .prober = chromeos_i2c_component_prober, + .data = &chromeos_i2c_probe_dumb_trackpad, + }, { + .compatible = "google,steelix", + .prober = chromeos_i2c_component_prober, + .data = &chromeos_i2c_probe_dumb_trackpad, + }, { + .compatible = "google,voltorb", + .prober = chromeos_i2c_component_prober, + .data = &chromeos_i2c_probe_dumb_trackpad, }, };