From patchwork Wed Nov 3 11:48:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Alistair Francis X-Patchwork-Id: 12600633 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7621EC433F5 for ; Wed, 3 Nov 2021 11:48:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4E7A761058 for ; Wed, 3 Nov 2021 11:48:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231623AbhKCLvO (ORCPT ); Wed, 3 Nov 2021 07:51:14 -0400 Received: from new2-smtp.messagingengine.com ([66.111.4.224]:49623 "EHLO new2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230250AbhKCLvO (ORCPT ); Wed, 3 Nov 2021 07:51:14 -0400 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id 8B3B558073B; Wed, 3 Nov 2021 07:48:37 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Wed, 03 Nov 2021 07:48:37 -0400 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=fm2; bh=vvUrm34c7dv+UGdvIdwJr40CsJ T6cIMI3th4q8bRplw=; b=Xfa5wpxrG/xs5eGRA4vWurwqyAp77CPa+CICSSmwIt HMS3KYMY1sxVdFrKRA+xN73WuGu7u6/2BqHSOXjMjj6tDQ2+Z8n2qa5D38oIFw2E 1Gg8jfpZw+i3ruu3yY4HwvoxH2ozpm07lYa3KpP4NSUOc/Dgh1lTzzZh9fRSvR7K IQJHsv2hy1KCMXPouRwgrX08BhEyekXjtRLE6vdG7raq5MGEaH1Ku10naD7vHJ/8 FcKX3upoqIau4PG60uXuHQSFrSAvpPK35JXoYtTxLzOeqIxkaWnNH0hxhYY6W+yd isppuC8GK/HCf6s8lscTSmqKQ2UkA8G5LdnTKGu8A7bQ== 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=vvUrm3 4c7dv+UGdvIdwJr40CsJT6cIMI3th4q8bRplw=; b=j03UfstXNUCEur7gSvZAX9 Brg4j+Gk+ctxHbruLexKyrKraWE9z9mlRJMblI4uqLQMtlIy/7kkoxN7xkoRHT06 S7MKr4xOMz98N516jWwNmN1il06HwFS0JitsFZFlvk1K0Df5SpN7IReVvwtOtIha Kxonp5vJZWf6RzUgPEKSTpOHSmBo+SQjVehI8jFwVzKJ5/cOSFJ1Nl+7Il9NHT77 pUCtEGMYQwZAUlKkzzrkm02iMqhtBgDh0P8H3tZIGCQTzE+doq2EpL0tP/WLozmL ALQ7Y5sViWMHmknbLuZj/mM87PpPs9FtGaanqFOLSN3Br+R+xejHkaSBiJS4+JsQ == X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvuddrtddvgdefudcutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffogggtgfesthhqredtre dtjeenucfhrhhomheptehlihhsthgrihhrucfhrhgrnhgtihhsuceorghlihhsthgrihhr segrlhhishhtrghirhdvfedrmhgvqeenucggtffrrghtthgvrhhnpeffledvgeevfeevfe dvvdffieetfefgjeevgeeitefhkeeghfelueekhfejheffgfenucffohhmrghinheplhif nhdrnhgvthdpghhithhhuhgsrdgtohhmnecuvehluhhsthgvrhfuihiivgeptdenucfrrg hrrghmpehmrghilhhfrhhomheprghlihhsthgrihhrsegrlhhishhtrghirhdvfedrmhgv X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 3 Nov 2021 07:48:32 -0400 (EDT) From: Alistair Francis To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mylene.josserand@free-electrons.com, linus.walleij@linaro.org, andreas@kemnade.info, rydberg@bitmath.org, dmitry.torokhov@gmail.com, robh+dt@kernel.org, alistair23@gmail.com, Alistair Francis Subject: [PATCH v2 0/4] Add support for the Cypress cyttsp5 Date: Wed, 3 Nov 2021 21:48:26 +1000 Message-Id: <20211103114830.62711-1-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 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 Documentation: DT: bindings: input: Add documentation for cyttsp5 .../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 | 14 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/cyttsp5.c | 1135 +++++++++++++++++ 6 files changed, 1332 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c