From patchwork Sat Dec 5 05:33:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 11952925 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D2FAC4167B for ; Sat, 5 Dec 2020 05:35:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5678922D3E for ; Sat, 5 Dec 2020 05:35:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727978AbgLEFex (ORCPT ); Sat, 5 Dec 2020 00:34:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725730AbgLEFex (ORCPT ); Sat, 5 Dec 2020 00:34:53 -0500 Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75D7CC061A4F; Fri, 4 Dec 2020 21:34:12 -0800 (PST) Received: by mail-lf1-x132.google.com with SMTP id a9so10651822lfh.2; Fri, 04 Dec 2020 21:34:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=w+OeAkZgNj+MXQ3DH4VONGYNB4R07iZ8IreFmZG+j/c=; b=u422r3rjlGqP3sR2ovIAgjx3vy6jdu69rhOhKvSz660wSjNqMVVfH6UeUcsYsDp6Ir v8DKkcedwpW7K/wTD0wRzjsotVNDQpRy+YkeU35IbR55+VbrhhkHM467mNnGQlo+oVSC 3LOqVEt4N40xs/9u0ELOvo5crFb1H2wNwbBiKbwSKmznxGkvhX9m8kZa2/nZRPkiOHOW NMxRtGDo4IzMU1QXiVsWRmtAx78gclw67JzsFBxnSpwMkuloKiJZmyCdHGUwWTwpbi93 Nrq5WmFp34T39fEW/ZuCK9gqzDxPKBMXbyF2BDlnzf83LucnzBpaRkbfBDsAsihGqFfG 05eA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=w+OeAkZgNj+MXQ3DH4VONGYNB4R07iZ8IreFmZG+j/c=; b=rpavMhLkNXY/S3Zv48WzrY1CmZLExXYt/I6GfO6x3Bx3HRvAqRp2Z4Kg0L/NOc9Ozn SkoEMTXgQOjePihGH2IXWICJ/F+NwYfd26DTbrYxzTYVttDI7nQaY0J5haPh5xNa9gn5 5DdZtkz9kba6EDXJMLZCmZvp+tbtxKvKDKAGhatp3xJXpgEG9WcNIzvGatgZ/KmMQD/p W8b1k/VgZP/5eOU6lv8YnB2snqMdfoKad+MoGBB41Pt6JV5z7gicMHN2Qrjn1kaRploE ZxcNIc8MHhYiPwxTuqwrYYr4VLHgNV4DeQ47woc3oU3TQn6kijGlF5QDLUaqGr1WiEVT 1kCQ== X-Gm-Message-State: AOAM533YTecyhmnHE5KyGnzx6Bow8ccn2Jki88UhkeCatZ39SuoxLrpj ZX3lKXKJD/JSs4iHRd0SE/o= X-Google-Smtp-Source: ABdhPJyUH0DzOcTH+Ceg+t3jp2tA/C4MOKub6f2dgD/N7C07/xDQypsbnC7PzM7w81+e68dQ8cMX9g== X-Received: by 2002:ac2:528b:: with SMTP id q11mr4658624lfm.60.1607146450638; Fri, 04 Dec 2020 21:34:10 -0800 (PST) Received: from localhost.localdomain (109-252-192-53.dynamic.spd-mgts.ru. [109.252.192.53]) by smtp.gmail.com with ESMTPSA id d25sm2289861lja.40.2020.12.04.21.34.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Dec 2020 21:34:10 -0800 (PST) From: Dmitry Osipenko To: Nick Dyer , Dmitry Torokhov , Rob Herring , Thierry Reding , Jonathan Hunter , Linus Walleij , Jiada Wang Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/3] dt-bindings: input: atmel_mxt_ts: Document atmel,wakeup-method and wake-GPIO Date: Sat, 5 Dec 2020 08:33:26 +0300 Message-Id: <20201205053328.9535-2-digetx@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201205053328.9535-1-digetx@gmail.com> References: <20201205053328.9535-1-digetx@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Some Atmel touchscreen controllers have a WAKE line that needs to be asserted low in order to wake up controller from a deep sleep. Document the wakeup methods and the wake-GPIO properties. Signed-off-by: Dmitry Osipenko Reviewed-by: Linus Walleij --- .../bindings/input/atmel,maxtouch.yaml | 26 +++++++++++++++++++ include/dt-bindings/input/atmel-maxtouch.h | 10 +++++++ 2 files changed, 36 insertions(+) create mode 100644 include/dt-bindings/input/atmel-maxtouch.h diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml b/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml index 8c6418f76e94..7924a16dc248 100644 --- a/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml +++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.yaml @@ -39,6 +39,13 @@ properties: (active low). The line must be flagged with GPIO_ACTIVE_LOW. + wake-gpios: + maxItems: 1 + description: + Optional GPIO specifier for the touchscreen's wake pin + (active low). The line must be flagged with + GPIO_ACTIVE_LOW. + linux,gpio-keymap: $ref: /schemas/types.yaml#/definitions/uint32-array description: | @@ -53,6 +60,23 @@ properties: or experiment to determine which bit corresponds to which input. Use KEY_RESERVED for unused padding values. + atmel,wakeup-method: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + The WAKE line is an active-low input that is used to wake up the touch + controller from deep-sleep mode before communication with the controller + could be started. This feature used to minimize current consumption + when the controller is in deep sleep mode. + + The WAKE pin can be connected in one of the following ways: + 1) left permanently low + 2) connected to the I2C-compatible SCL pin + 3) connected to a GPIO pin on the host + enum: + - 0 # ATMEL_MXT_WAKEUP_NONE + - 1 # ATMEL_MXT_WAKEUP_I2C_SCL + - 2 # ATMEL_MXT_WAKEUP_GPIO + required: - compatible - reg @@ -63,6 +87,7 @@ additionalProperties: false examples: - | #include + #include #include i2c { #address-cells = <1>; @@ -75,6 +100,7 @@ examples: reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>; vdda-supply = <&ab8500_ldo_aux2_reg>; vdd-supply = <&ab8500_ldo_aux5_reg>; + atmel,wakeup-method = ; }; }; diff --git a/include/dt-bindings/input/atmel-maxtouch.h b/include/dt-bindings/input/atmel-maxtouch.h new file mode 100644 index 000000000000..7345ab32224d --- /dev/null +++ b/include/dt-bindings/input/atmel-maxtouch.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef _DT_BINDINGS_ATMEL_MAXTOUCH_H +#define _DT_BINDINGS_ATMEL_MAXTOUCH_H + +#define ATMEL_MXT_WAKEUP_NONE 0 +#define ATMEL_MXT_WAKEUP_I2C_SCL 1 +#define ATMEL_MXT_WAKEUP_GPIO 2 + +#endif /* _DT_BINDINGS_ATMEL_MAXTOUCH_H */