From patchwork Tue Nov 1 09:51:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Billy Tsai X-Patchwork-Id: 13026835 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 DF4C4FA3743 for ; Tue, 1 Nov 2022 09:52:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230184AbiKAJwI (ORCPT ); Tue, 1 Nov 2022 05:52:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58554 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229641AbiKAJwG (ORCPT ); Tue, 1 Nov 2022 05:52:06 -0400 Received: from twspam01.aspeedtech.com (twspam01.aspeedtech.com [211.20.114.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF8A319031; Tue, 1 Nov 2022 02:52:04 -0700 (PDT) Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 2A19RBEV025158; Tue, 1 Nov 2022 17:27:11 +0800 (GMT-8) (envelope-from billy_tsai@aspeedtech.com) Received: from BillyTsai-pc.aspeed.com (192.168.2.149) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 1 Nov 2022 17:50:21 +0800 From: Billy Tsai To: , , , , , , , , , , , , , , , , , Subject: [v2 0/3] upport pwm/tach driver for aspeed ast26xx Date: Tue, 1 Nov 2022 17:51:53 +0800 Message-ID: <20221101095156.30591-1-billy_tsai@aspeedtech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [192.168.2.149] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 2A19RBEV025158 Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Unlike the old design that the register setting of the TACH should based on the configure of the PWM. In ast26xx, the dependency between pwm and tach controller is eliminated and becomes a separate hardware block. One is used to provide pwm output and another is used to monitor the frequency of the input. Therefore, this patch serials implements them by writing the two driver "pwm-aspeed-ast2600.c" and "tach-aspeed-ast2600.c". The former is following the pwm subsystem which can apply the existed driver to controller the fan(pwm-fan.c), beeper(pwm-beeper.c) and so on. The latter is following the sysfs interface of hwmon to creat the node for fan monitor. Changes since v1: - tach: - Add the document tach-aspeed-ast2600.rst - Use devm_* api to simplify the error cleanup. - Change hwmon register api to devm_hwmon_device_register_with_info Billy Tsai (3): dt-bindings: Add bindings for aspeed pwm-tach. pwm: Add Aspeed ast2600 PWM support hwmon: Add Aspeed ast2600 TACH support .../bindings/hwmon/aspeed,ast2600-tach.yaml | 48 ++ .../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 76 +++ .../bindings/pwm/aspeed,ast2600-pwm.yaml | 64 +++ Documentation/hwmon/tach-aspeed-ast2600.rst | 28 + drivers/hwmon/Kconfig | 9 + drivers/hwmon/Makefile | 1 + drivers/hwmon/tach-aspeed-ast2600.c | 484 ++++++++++++++++++ drivers/pwm/Kconfig | 10 + drivers/pwm/Makefile | 1 + drivers/pwm/pwm-aspeed-ast2600.c | 325 ++++++++++++ 10 files changed, 1046 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/aspeed,ast2600-tach.yaml create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml create mode 100644 Documentation/devicetree/bindings/pwm/aspeed,ast2600-pwm.yaml create mode 100644 Documentation/hwmon/tach-aspeed-ast2600.rst create mode 100644 drivers/hwmon/tach-aspeed-ast2600.c create mode 100644 drivers/pwm/pwm-aspeed-ast2600.c