From patchwork Thu Dec 2 12:20:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Alistair Francis X-Patchwork-Id: 12694518 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 344F2C433F5 for ; Thu, 2 Dec 2021 12:28:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=kGoirpFF9wbu/c2fd+r+DFPKCqVEJFlPTZnHsg+Sf3E=; b=IIxel192DsWmAS GuelxDoUGrTjRr9berD2NEVp+tyGRcx7zURnfyLf6TKiLBGTjpPtcUf0WipqdvFppE6uklnSTQX2X 1eA2V6YWyoM1XpmkjY0x4jYeluEJ77Vu91fMy1uAaCe9N66SbBsV8TH7WluG2X6S9a1A70cjJjDZ2 8HKCrFh6NSu/CY8snL7A6xwbXkQmUJ4xQzxA9Gb8lM5q2NZBVh2c7gFa2yxKx6F5yK6amO33lbMet ZHhzT6gV1K0rHnHHOgQ4tGk6GXGCJk8AS4CrIG87N+l4SFsnNreOGEfM5aJEDGx/Cvf7gbYy6gr1d rqChOSYt1a5VKWWimN8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mslAc-00CHEG-MW; Thu, 02 Dec 2021 12:26:40 +0000 Received: from new2-smtp.messagingengine.com ([66.111.4.224]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1msl4f-00CFFT-0x for linux-arm-kernel@lists.infradead.org; Thu, 02 Dec 2021 12:20:30 +0000 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id 3E10558030B; Thu, 2 Dec 2021 07:20:28 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Thu, 02 Dec 2021 07:20:28 -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=fm2; bh=nFpd1cboO2xZsxTL6uy9AKL5Uy 6bj9BzOleJyoKqzCo=; b=x0Bb2FkWXHXVxFIephoeZcZ0kVvUq9EKv8PsZzqTKg 37e9wYLc58oVY2mtNO/5JeVDzVvUatA+WLvBjJz2ZBskee+3fUNVl9bGAngspM1j e2CBN3RQQ7cFMU6dRtA0YDboW7lB2DPYWIjzWRI1upIHvBBA25Y68xQ4cJl0rsE5 ALR0U9NVmx1q/ivoJwJI5rFWExFr7R0Q6ztEye3zKDKEXXibaQFH/UAqLpYJQ/p5 kxLYh1NUXqit2LJQYIqmSMs4TARPnWjd6rv7PwOmWrPQR5lhlN5ASHFkt9i9TmBk rnFLNddLKbe/k+iS5wx8vMg96n5tj7kIAoujsNyGSlqw== 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=nFpd1c boO2xZsxTL6uy9AKL5Uy6bj9BzOleJyoKqzCo=; b=Mk0lZ9Gd2+G4bm/d+6ZNsX uOySrk82VpgDxnrvN/XaTsLIKEWUkg6fSuaaLHmUP0UDzAGGZ6lIetrKjPRtLyPt xVW5MCB6W4BOLCYnYzQiJT6BG79wJberk1B34swKjN44ythE+ZXM3EzhZcP/Hdk4 FwHPp9fiARCiHvQKecej96kJBqnJLBKcUvh0lH89OZwPkrNg1mzW8jUlEUI3dHqI B4OH+BDu+udBg8nJBm2Yjt4OsATm+682Aq8PDaiU4T1a19eeXgpRdTeP82+VhCZR XqIg07tg5wkIufUMZ5hYja81yYsa31+hVRp4GdqSY4hR8ztkM1TW9uBm/Gcg571w == X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvuddrieehgdeflecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffogggtgfesthhqredtre dtjeenucfhrhhomheptehlihhsthgrihhrucfhrhgrnhgtihhsuceorghlihhsthgrihhr segrlhhishhtrghirhdvfedrmhgvqeenucggtffrrghtthgvrhhnpeffledvgeevfeevfe dvvdffieetfefgjeevgeeitefhkeeghfelueekhfejheffgfenucffohhmrghinheplhif nhdrnhgvthdpghhithhhuhgsrdgtohhmnecuvehluhhsthgvrhfuihiivgeptdenucfrrg hrrghmpehmrghilhhfrhhomheprghlihhsthgrihhrsegrlhhishhtrghirhdvfedrmhgv X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 2 Dec 2021 07:20:23 -0500 (EST) From: Alistair Francis To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: robh+dt@kernel.org, andreas@kemnade.info, alistair23@gmail.com, dmitry.torokhov@gmail.com, linus.walleij@linaro.org, rydberg@bitmath.org, Alistair Francis Subject: [PATCH v3 0/4] Add support for the Cypress cyttsp5 Date: Thu, 2 Dec 2021 22:20:17 +1000 Message-Id: <20211202122021.43124-1-alistair@alistair23.me> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211202_042029_191389_9FD85AAE X-CRM114-Status: GOOD ( 11.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 | 1002 +++++++++++++++++ 6 files changed, 1199 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml create mode 100644 drivers/input/touchscreen/cyttsp5.c