From patchwork Tue May 23 19:27:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 686083 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBD16C7EE2F for ; Tue, 23 May 2023 19:31:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232824AbjEWTbe (ORCPT ); Tue, 23 May 2023 15:31:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37422 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237921AbjEWTbb (ORCPT ); Tue, 23 May 2023 15:31:31 -0400 Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45604E52 for ; Tue, 23 May 2023 12:31:11 -0700 (PDT) Received: by mail-pl1-x634.google.com with SMTP id d9443c01a7336-1ae4baa77b2so244785ad.2 for ; Tue, 23 May 2023 12:31:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1684870270; x=1687462270; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=GwDjBDjP1Eb9OTHMLCOR/AtNeUUStJkdoOVhV208Dc4=; b=JnHGvwp0MHHOERL70p/cjO3RLqzhUHXpXt/IGTpt6niWqd33tv18uY+o73i24RL1qw M53aApytyNVs94yi+SrqUH9g238/bAvF11jqzC2QJuyLgWzNiZ9/Otkm9Yr1lR2Q3Jlf FXGmHGyY42nSz871E9Rwe7eG95HISA1p4UxbM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684870270; x=1687462270; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=GwDjBDjP1Eb9OTHMLCOR/AtNeUUStJkdoOVhV208Dc4=; b=deq8Sq1xHngEBrnGcI8ebqObkt+KShXuGmDXbIBhq908tTSWDPHi/jNibapIy2yTEe zMjUOpe64GrbyE0rUpFYxArzTR3j7qovNv2J3w8aiChJCGWz3IaUZmlW7CMSLlHC87Wg 9MNfRRLTzxF2UjyYbqITO+2YYR4ibhQUbdu5a4HA16KfTCA80HE7cBD1xoQopoS/GHaJ X6HbeLGnPRZsjLQp0jDIgTLKanBsmm3WqsLk7ULdfg7ErEydKuxrKbBJz08LW57SUrpN AtGVHQxxgFnRxq/1Z/0xXfhzTlUBvusyoKCieEjx9CBpt86SuEniuOzp82o8oepVKswj HNig== X-Gm-Message-State: AC+VfDwFPHi5n07uzMinTtcaQrRlS9+cjigzpWksEeAjWeRvJl/VB68o qizfjzzV63yfLFamRjqYR7IF8A== X-Google-Smtp-Source: ACHHUZ7vfuZ1/I9FGbWeX0x+7CckoFKSaTGBFxiIakeywxadcLTtqYuNkWOGl9K3N1nc5OB4YVmv4Q== X-Received: by 2002:a17:902:f689:b0:1ac:8148:8c50 with SMTP id l9-20020a170902f68900b001ac81488c50mr18595095plg.28.1684870270645; Tue, 23 May 2023 12:31:10 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:9d:2:af98:af9d:ed15:f8b3]) by smtp.gmail.com with ESMTPSA id y18-20020a170902b49200b001aaef9d0102sm7109947plr.197.2023.05.23.12.31.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 May 2023 12:31:10 -0700 (PDT) From: Douglas Anderson To: Jiri Kosina , Benjamin Tissoires , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann Cc: dri-devel@lists.freedesktop.org, linux-input@vger.kernel.org, Dmitry Torokhov , hsinyi@google.com, devicetree@vger.kernel.org, yangcong5@huaqin.corp-partner.google.com, linux-kernel@vger.kernel.org, Daniel Vetter , linux-arm-msm@vger.kernel.org, cros-qcom-dts-watchers@chromium.org, Douglas Anderson Subject: [PATCH 1/9] dt-bindings: HID: i2c-hid: Add "panel" property to i2c-hid backed panels Date: Tue, 23 May 2023 12:27:55 -0700 Message-ID: <20230523122802.1.Id68e30343bb1e11470582a9078b086176cfec46b@changeid> X-Mailer: git-send-email 2.40.1.698.g37aff9b760-goog In-Reply-To: <20230523193017.4109557-1-dianders@chromium.org> References: <20230523193017.4109557-1-dianders@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org As talked about in the patch ("drm/panel: Add a way for other devices to follow panel state"), touchscreens that are connected to panels are generally expected to be power sequenced together with the panel they're attached to. Today, nothing provides information allowing you to find out that a touchscreen is connected to a panel. Let's add a phandle for this. Signed-off-by: Douglas Anderson --- Documentation/devicetree/bindings/input/elan,ekth6915.yaml | 6 ++++++ Documentation/devicetree/bindings/input/goodix,gt7375p.yaml | 6 ++++++ Documentation/devicetree/bindings/input/hid-over-i2c.yaml | 6 ++++++ 3 files changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml index 05e6f2df604c..d55b03bd3ec4 100644 --- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml +++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml @@ -24,6 +24,12 @@ properties: interrupts: maxItems: 1 + panel: + description: If this is a touchscreen, the panel it's connected to. This + indicates that the panel and touchscreen are expected to be power + sequenced together. + $ref: /schemas/types.yaml#/definitions/phandle + reset-gpios: description: Reset GPIO; not all touchscreens using eKTH6915 hook this up. diff --git a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml index ce18d7dadae2..a5cd8dafd450 100644 --- a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml +++ b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml @@ -30,6 +30,12 @@ properties: interrupts: maxItems: 1 + panel: + description: If this is a touchscreen, the panel it's connected to. This + indicates that the panel and touchscreen are expected to be power + sequenced together. + $ref: /schemas/types.yaml#/definitions/phandle + reset-gpios: true diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml index 7156b08f7645..c7ea6c148838 100644 --- a/Documentation/devicetree/bindings/input/hid-over-i2c.yaml +++ b/Documentation/devicetree/bindings/input/hid-over-i2c.yaml @@ -44,6 +44,12 @@ properties: description: HID descriptor address $ref: /schemas/types.yaml#/definitions/uint32 + panel: + description: If this is a touchscreen, the panel it's connected to. This + indicates that the panel and touchscreen are expected to be power + sequenced together. + $ref: /schemas/types.yaml#/definitions/phandle + post-power-on-delay-ms: description: Time required by the device after enabling its regulators or powering it on, before it is ready for communication.