From patchwork Sun Jan 9 11:53:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Alistair X-Patchwork-Id: 531658 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 825B2C433EF for ; Sun, 9 Jan 2022 11:53:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231304AbiAILxp (ORCPT ); Sun, 9 Jan 2022 06:53:45 -0500 Received: from new4-smtp.messagingengine.com ([66.111.4.230]:35305 "EHLO new4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231228AbiAILxo (ORCPT ); Sun, 9 Jan 2022 06:53:44 -0500 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.nyi.internal (Postfix) with ESMTP id 01C3258036F; Sun, 9 Jan 2022 06:53:44 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Sun, 09 Jan 2022 06:53:44 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alistair23.me; h=from:to:cc:subject:date:message-id:mime-version:content-type :content-transfer-encoding; s=fm3; bh=V44g4KaOanUCYnEFrrXUjUu5uP rh4Es3XvFXpC0gceU=; b=nXbewoMimXzq2fUMipOYB/QKYHvOpgb/oYmAbfOhuS GYCumsTGHdvCf8DMRMPW6bINCaWqeToR7mobOJiyLzcNyN14K2+yHJl+lz4efJYl h+ASuPSAvEQZvFKBTTaZ4Qyxsu75dNU41N/iey6N2sS0/FEv3svfEIE2gRIp/RrM ZvSTVIK/uKuJzU9hX/6jG7OcpgCnxcivP/SQgj3fKJE7xDV2wS4O0X7Rc341GIR6 RgUNk9vjdsxSekuiQ0uFNcWtYrql8iArPrwfuusvvKX4CWAaN66BakyMtYQBciAE HIEuJCY4KDSrUSBn0LedCRltgBaFi8WFLmK8miGFuDtw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=V44g4K aOanUCYnEFrrXUjUu5uPrh4Es3XvFXpC0gceU=; b=TstFC+lm4vCyXXgZSkJo+T t2D63R/TrHDe5TJmtBT8o23n/RIPVbGwGuPa6XBw83VqSmrAVMRuN65+1uy7nafq IF/qNcZPaAuj4uuHHYfpbebrQ1eWWnT5a4+N3Y0RVKrb3oNquvE5XRtihe3bmQtH bR87XUAxIam34FEb0YVwKPTYw8fdKKxa+UryvC7DEKrvizFRFIg/RuoCAEIQkw8h IQ9Eub7vmH3PZy5MaAVqE+h+4w2TKpMl2ChC2ciKhzorbsGZPVzlV6nVKEsK2aZn FdfEVwub3650jnxMbi+1xDp6ib1K6os4OG2tK5EZCZ532cLliy3iL4HAgpQzfkTA == X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvuddrudegkedgfeehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvffufffkofggtgfgsehtqhertd ertdejnecuhfhrohhmpeetlhhishhtrghirhcuhfhrrghntghishcuoegrlhhishhtrghi rhesrghlihhsthgrihhrvdefrdhmvgeqnecuggftrfgrthhtvghrnhepffelvdegveefve efvddvffeiteefgfejveegieethfekgefhleeukefhjeehfffgnecuffhomhgrihhnpehl fihnrdhnvghtpdhgihhthhhusgdrtghomhenucevlhhushhtvghrufhiiigvpedtnecurf grrhgrmhepmhgrihhlfhhrohhmpegrlhhishhtrghirhesrghlihhsthgrihhrvdefrdhm vg X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sun, 9 Jan 2022 06:53:36 -0500 (EST) From: Alistair Francis To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: dmitry.torokhov@gmail.com, rydberg@bitmath.org, andreas@kemnade.info, linus.walleij@linaro.org, alistair23@gmail.com, robh+dt@kernel.org, Alistair Francis Subject: [PATCH v5 0/4] Add support for the Cypress cyttsp5 Date: Sun, 9 Jan 2022 21:53:27 +1000 Message-Id: <20220109115331.388633-1-alistair@alistair23.me> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org This patch series builds on top of [1] and adds support for the cyttsp5 touchscreen controller for the reMarkable 2. I first tried to add an I2C HID device. Although the cyttsp5 has some HID looking aspects it is not HID compatible. Just in trying to probe the device I found: - The HID descriptor has extra padding - The HID descriptor sets the high bytes of the descriptor length - The HID descriptor has extra unrecognised tags - The HID reset command doesn't appear to work I don't think there is a way to use the I2C HID framework with the cyttsp5. For anyone interested you can see the work here [2]. In that branch though I can only obtain a HID descriptor, nothing else works without more core changes. So instead I rebased the series from [1]. Converted to the new yaml DTS documentation, added regulator support and fixed a x/y miscalculation bug. 1: https://lwn.net/ml/linux-kernel/20180703094309.18514-1-mylene.josserand@bootlin.com/ 2: https://github.com/alistair23/linux/commits/rM2-mainline-cyttsp5-hid v5: - Address review comments from v4 Alistair Francis (2): ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen ARM: dts: imx7d-remarkable2: Enable the cyttsp5 Mylène Josserand (2): Input: Add driver for Cypress Generation 5 touchscreen dt-bindings: input: Add Cypress TT2100 touchscreen controller .../input/touchscreen/cypress,tt21000.yaml | 92 ++ arch/arm/boot/dts/imx7d-remarkable2.dts | 89 ++ arch/arm/configs/imx_v6_v7_defconfig | 1 + drivers/input/touchscreen/Kconfig | 16 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp5.c | 902 ++++++++++++++++++ 6 files changed, 1101 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c