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: 13026828 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 D1271FA3745 for ; Tue, 1 Nov 2022 09:52:11 +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:To :From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=qrgMOjqS8S2YuwE9DftRnJujTLciseKDU5vAF0uhvvc=; b=KlD6I6IztOXHDW UFItG3KPrndaJaRxA4ZnXjOzPL4e0P1HoZI97ETzmprr6mC8ao8XfJ+CJaPMJgdRpX144F+wam5xN qkfGMTHbCDGJ1f7h+K+GpwIA8+FjAl63Q/7sKG+NlHMWYy4bdaO3U5FsjOJnX58M9SEAOezo+55Ep Yh+IMERPssUgmNiLape713g1VFp2ShDO4VEiFAW+YsH8uAHv5BIe2xE3lam7SFA3YmcoiEvLAGABU touOzeZg1FdbQ+eccarf1ohIj6gEUm8c7s3V2lt2wKidIrEBZxkdo5wNpUPFah09+f6H5XhdRhHjq E6tAFjiNyY4nKSOWhZew==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1opnv5-003nTX-Dq; Tue, 01 Nov 2022 09:50:55 +0000 Received: from [211.20.114.71] (helo=twspam01.aspeedtech.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1opnv2-003nRU-8n for linux-arm-kernel@lists.infradead.org; Tue, 01 Nov 2022 09:50:53 +0000 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221101_025052_595194_C5A5E8D7 X-CRM114-Status: GOOD ( 12.27 ) 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 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