From patchwork Fri Mar 5 13:38:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 394687 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, 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 4D8DAC4332E for ; Fri, 5 Mar 2021 13:39:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36A6E65009 for ; Fri, 5 Mar 2021 13:39:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230346AbhCENiz (ORCPT ); Fri, 5 Mar 2021 08:38:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229729AbhCENiY (ORCPT ); Fri, 5 Mar 2021 08:38:24 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE490C061756 for ; Fri, 5 Mar 2021 05:38:23 -0800 (PST) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lIAen-00039m-1T; Fri, 05 Mar 2021 14:38:17 +0100 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lIAel-0007IH-5a; Fri, 05 Mar 2021 14:38:15 +0100 From: Oleksij Rempel To: Rob Herring , Jonathan Cameron Cc: Oleksij Rempel , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Pengutronix Kernel Team , David Jander , Robin van der Gracht , linux-iio@vger.kernel.org, Lars-Peter Clausen , Peter Meerwald-Stadler , Dmitry Torokhov Subject: [PATCH v1 0/2] mainline ti tsc2046 adc driver Date: Fri, 5 Mar 2021 14:38:11 +0100 Message-Id: <20210305133813.27967-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: devicetree@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org TI TSC2046 is a touchscreen controller based on 8 channel ADC. Since most of this ADC based touchscreen controller share same set of challenges, it is better keep then as simple IIO ADC devices attached to a generic resistive-adc-touch driver. This driver can replace drivers/input/touchscreen/ads7846.c and has following advantages over it: - less code to maintain - shared code paths (resistive-adc-touch, iio-hwmon, etc) - can be used as plain IIO ADC to investigate signaling issues or test real capacity of the plates and attached low-pass filters (or use the touchscreen as a microphone if you like ;) ) Oleksij Rempel (2): dt-bindings:iio:adc: add documentation for TI TSC2046 controller iio: adc: add ADC driver for the TI TSC2046 controller .../bindings/iio/adc/ti,tsc2046.yaml | 52 ++ MAINTAINERS | 8 + drivers/iio/adc/Kconfig | 12 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/ti-tsc2046.c | 652 ++++++++++++++++++ 5 files changed, 725 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml create mode 100644 drivers/iio/adc/ti-tsc2046.c