From patchwork Wed Apr 15 13:04:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kamel Bouhara X-Patchwork-Id: 207947 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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 65A28C2BA19 for ; Wed, 15 Apr 2020 13:05:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 494A120737 for ; Wed, 15 Apr 2020 13:05:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2505903AbgDONFH (ORCPT ); Wed, 15 Apr 2020 09:05:07 -0400 Received: from relay9-d.mail.gandi.net ([217.70.183.199]:46327 "EHLO relay9-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2505896AbgDONFC (ORCPT ); Wed, 15 Apr 2020 09:05:02 -0400 X-Originating-IP: 78.193.40.249 Received: from localhost (unknown [78.193.40.249]) (Authenticated sender: kamel.bouhara@bootlin.com) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id C089DFF80D; Wed, 15 Apr 2020 13:04:58 +0000 (UTC) From: Kamel Bouhara To: William Breathitt Gray , Rob Herring , Mark Rutland , Nicolas Ferre , Alexandre Belloni , Ludovic Desroches , linux-arm-kernel@lists.infradead.org Cc: Thomas Petazzoni , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, Kamel Bouhara Subject: [PATCH v3 0/3] Microchip TCB Capture driver Date: Wed, 15 Apr 2020 15:04:52 +0200 Message-Id: <20200415130455.2222019-1-kamel.bouhara@bootlin.com> X-Mailer: git-send-email 2.25.0 MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Hello, Here is a new counter driver to support Microchip TCB capture devices. Each SoC has two TCB blocks, each one including three independent channels.The following series adds support for two counter modes: increase and quadrature decoder. As for the atmel clocksource and pwm, the counter driver needs to fill some tcb capabilities in order to operate with the right configuration. This is achieved in first patch of this series. Please feel free to comment. Cheers, Changes from v3: - Updated the brand name: s/atmel/microchip/. - Added missing kernel doc for new elements introduced in structure atmel_tcb_config. - Removed useless blank line - Added an explicit clock removing path using devm_add_action_or_reset Changes from v2: - Fixed first patch not applying on mainline - Updated return code to -EINVAL when user is requesting qdec mode on a counter device not supporting it. - Added an error case returning -EINVAL when action edge is performed in qdec mode. - Removed no need to explicity setting ops to NULL from static struct as it is the default value. - Changed confusing code by using snprintf for the sake of clarity. - Changed code to use ARRAY_SIZE so that future reviewers will know that num_counts matches what's in the atmel_tc_count array without having to check so themselves. - Fixed errors reported by dt_binding_check Kamel Bouhara (3): ARM: at91: add atmel tcb capabilities dt-bindings: counter: microchip-tcb-capture counter counter: Add microchip TCB capture counter .../counter/microchip-tcb-capture.yaml | 33 ++ drivers/counter/Kconfig | 11 + drivers/counter/Makefile | 1 + drivers/counter/microchip-tcb-capture.c | 397 ++++++++++++++++++ include/soc/at91/atmel_tcb.h | 5 + 5 files changed, 447 insertions(+) create mode 100644 Documentation/devicetree/bindings/counter/microchip-tcb-capture.yaml create mode 100644 drivers/counter/microchip-tcb-capture.c