From mboxrd@z Thu Jan 1 00:00:00 1970 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 1A6BDC25B77 for ; Thu, 16 May 2024 15:09:21 +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:References:In-Reply-To: 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: List-Owner; bh=sm27MZZfcVKLsNliEp7j1oq4GVwiEAgscXDzAo0alQM=; b=36MyATxapd40Of Q1SdTHNFy57F0CXnBobQzmVqI6FPzvMMbt+34VGwSUH1RYYD9nEKyMBPkVA0AmlKLR+moVSKM/b+e fjI+Qe9MjcgTsPgXaAw/GCBLDvSEibgp7IEGjpALDz3/X+XSG6z1J2pVz8lR6FzeTeo4/RKSV3m89 4VvOeCdw39oRnbgBXdXfVcodfjN6IDawAJZPGmwSW9UJalQuh2Voosg+YY7RewnO8gI2nSO35Hbhn ZpJe8OXW89VciVdPsFuluTwehTxG5XTkWyyNWoqjrx8u7pAz1kVLBZLO4qmwR1mN06ACWNT2gp336 W0ICZ3F1XTPnaKkBCGdw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7cjM-00000005G2H-0k8i; Thu, 16 May 2024 15:09:16 +0000 Received: from mail-wm1-x32f.google.com ([2a00:1450:4864:20::32f]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s7cj2-00000005Foo-0mQW for linux-amlogic@lists.infradead.org; Thu, 16 May 2024 15:09:08 +0000 Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-41fd5dc0480so51936695e9.1 for ; Thu, 16 May 2024 08:08:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1715872135; x=1716476935; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=puB+gD3ay9Sx041zZz0+FhSyarhWutAqTKpIgu3JFCo=; b=EkOXrOIZgaa+1ypcaBTA8T3CNGO+85upE+zKzZN27FKjRStmKEdHP4UxA7Do0Rc+R8 cnaAt/eMQgDzqCWpPnuM/X5n3zyo3jPq+mZ7EngcdQw8tBHfzDpShIe4aTJChJj+C6bX ieyxqjt4b8cQTgnXGQqzFaK+e7BlEwMxZxAsA8jNnLhcph7TRrA2XJelkFBB2aIdrgD1 hv/G3SmLVA42+3EtuXg5TQE3LfETm+MA9Ap03rVXYKG4azMDkC5gh9CxBO4daoHgtvtI 2zKQiyvUz0FH7tfirV6DokHwrvCi1pbf8rGpWqeNIxRiQeEb6sfliqLoMpSoV6oHmGYZ al7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715872135; x=1716476935; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=puB+gD3ay9Sx041zZz0+FhSyarhWutAqTKpIgu3JFCo=; b=B8U5JjkFgGdP6bKs8HnuDt1iu8WDe8hxCFFb0gjMJk7z3liBolrXISkQX9ecV96bTl xvVjSvWy5IoJeoDFbuuEnhVOC6+rM1C4z6+usxUmbNPbjuPnFfCeWWGk/m/N8tjP6bBS 7Wrpe39bDz+qNQxZ/BbPU9ZyMzN5zdfVpt3ElWiI141N8paRRnRQ+TxzRYGyML4Qolhh dRCYcnS0Vc22HmYuFVYPjow7l9TqmGDjTbXIdOQf8I58PDpI6hnOuHOibLmA4vQTvFVi +KR8KpiUcds/byVvmJr2M0Mk32ppXGKwqNrbd4dcD6hM0zMfKIthrhtNCELi4SYA9PU1 3iig== X-Forwarded-Encrypted: i=1; AJvYcCW7obR2HNbs3FfPOIFSmu0V/G7Myle6+nAme/LZPRS/RGT5Xm7gaO8OV0eSi9O0y2ypvTLR/C/2pswBqk6G4cdFdH1Bv7DadVR+zr4GsPfbE7o= X-Gm-Message-State: AOJu0Yw+6FbvIEFrE9I8/O+0buIl7fxGS3ZiIWIKQ2zVcruHt3tuzZCQ MxadBU8/NjoTEiNul5jBIj93lyQiigUChLbND2OMWtNWKbUH9JYcHlqpbbUYv62ZYQ9hdSYoene n X-Google-Smtp-Source: AGHT+IERIDiWGU6HrqYN8ZiuBsFdA4JZIIGZnn0g1+UjHbl3RAe6+oeD2WgCdEHGNIBGCjI44i0UXQ== X-Received: by 2002:a05:600c:1383:b0:41c:2992:a3bd with SMTP id 5b1f17b1804b1-41feac5a45fmr141942315e9.27.1715872134895; Thu, 16 May 2024 08:08:54 -0700 (PDT) Received: from toaster.lan ([2a01:e0a:3c5:5fb1:1fce:7e5a:e201:edd5]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-41f87c25459sm309351725e9.18.2024.05.16.08.08.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 May 2024 08:08:54 -0700 (PDT) From: Jerome Brunet To: Philipp Zabel , Stephen Boyd , Neil Armstrong Cc: Jerome Brunet , Jan Dakinevich , linux-kernel@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org Subject: [RFC PATCH 8/9] clk: meson: add auxiliary reset helper driver Date: Thu, 16 May 2024 17:08:38 +0200 Message-ID: <20240516150842.705844-9-jbrunet@baylibre.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240516150842.705844-1-jbrunet@baylibre.com> References: <20240516150842.705844-1-jbrunet@baylibre.com> MIME-Version: 1.0 X-Patchwork-Bot: notify X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240516_080858_649041_80C92B24 X-CRM114-Status: GOOD ( 16.23 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Add an helper module to register auxiliary reset drivers from Amlogic clock controller. Signed-off-by: Jerome Brunet --- drivers/clk/meson/Kconfig | 5 ++ drivers/clk/meson/Makefile | 1 + drivers/clk/meson/meson-clk-rst-aux.c | 84 +++++++++++++++++++++++++++ drivers/clk/meson/meson-clk-rst-aux.h | 14 +++++ 4 files changed, 104 insertions(+) create mode 100644 drivers/clk/meson/meson-clk-rst-aux.c create mode 100644 drivers/clk/meson/meson-clk-rst-aux.h diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig index 59a40a49f8e1..6905aa2f080c 100644 --- a/drivers/clk/meson/Kconfig +++ b/drivers/clk/meson/Kconfig @@ -37,6 +37,11 @@ config COMMON_CLK_MESON_VCLK config COMMON_CLK_MESON_CLKC_UTILS tristate +config COMMON_CLK_MESON_CLK_RST_AUX + depends on REGMAP && AUXILIARY_BUS + imply RESET_MESON + tristate + config COMMON_CLK_MESON_AO_CLKC tristate select COMMON_CLK_MESON_REGMAP diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile index 9ba43fe7a07a..2926a04b6c33 100644 --- a/drivers/clk/meson/Makefile +++ b/drivers/clk/meson/Makefile @@ -2,6 +2,7 @@ # Amlogic clock drivers obj-$(CONFIG_COMMON_CLK_MESON_CLKC_UTILS) += meson-clkc-utils.o +obj-$(CONFIG_COMMON_CLK_MESON_CLK_RST_AUX) += meson-clk-rst-aux.o obj-$(CONFIG_COMMON_CLK_MESON_AO_CLKC) += meson-aoclk.o obj-$(CONFIG_COMMON_CLK_MESON_CPU_DYNDIV) += clk-cpu-dyndiv.o obj-$(CONFIG_COMMON_CLK_MESON_DUALDIV) += clk-dualdiv.o diff --git a/drivers/clk/meson/meson-clk-rst-aux.c b/drivers/clk/meson/meson-clk-rst-aux.c new file mode 100644 index 000000000000..a7cf3c39828c --- /dev/null +++ b/drivers/clk/meson/meson-clk-rst-aux.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2024 BayLibre, SAS. +// Author: Jerome Brunet + +#include +#include +#include +#include + +#include + +#include "meson-clk-rst-aux.h" + +static DEFINE_IDA(meson_clk_rst_aux_ida); + +static void meson_clk_rst_aux_release(struct device *dev) +{ + struct auxiliary_device *adev = to_auxiliary_dev(dev); + struct meson8b_reset_adev *raux = + to_meson8b_reset_adev(adev); + + ida_free(&meson_clk_rst_aux_ida, adev->id); + kfree(raux); +} + +static void meson_clk_rst_aux_unregister_adev(void *_adev) +{ + struct auxiliary_device *adev = _adev; + + auxiliary_device_delete(adev); + auxiliary_device_uninit(adev); +} + +int devm_meson_clk_rst_aux_register(struct device *dev, + struct regmap *map, + const char *adev_name) +{ + struct meson8b_reset_adev *raux; + struct auxiliary_device *adev; + int ret; + + raux = kzalloc(sizeof(*raux), GFP_KERNEL); + if (!raux) + return -ENOMEM; + + ret = ida_alloc(&meson_clk_rst_aux_ida, GFP_KERNEL); + if (ret < 0) + goto raux_free; + + raux->map = map; + + adev = &raux->adev; + adev->id = ret; + adev->name = adev_name; + adev->dev.parent = dev; + adev->dev.release = meson_clk_rst_aux_release; + device_set_of_node_from_dev(&adev->dev, dev); + + ret = auxiliary_device_init(adev); + if (ret) + goto ida_free; + + ret = __auxiliary_device_add(adev, dev->driver->name); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + return devm_add_action_or_reset(dev, meson_clk_rst_aux_unregister_adev, + adev); + +ida_free: + ida_free(&meson_clk_rst_aux_ida, adev->id); +raux_free: + kfree(raux); + return ret; + +} +EXPORT_SYMBOL_GPL(devm_meson_clk_rst_aux_register); + +MODULE_DESCRIPTION("Amlogic auxiliary reset helper for clock"); +MODULE_AUTHOR("Jerome Brunet "); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/meson/meson-clk-rst-aux.h b/drivers/clk/meson/meson-clk-rst-aux.h new file mode 100644 index 000000000000..386a55a36cd9 --- /dev/null +++ b/drivers/clk/meson/meson-clk-rst-aux.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2024 BayLibre, SAS. + * Author: Jerome Brunet + */ + +#ifndef __MESON_CLK_RST_AUX_H +#define __MESON_CLK_RST_AUX_H + +int devm_meson_clk_rst_aux_register(struct device *dev, + struct regmap *map, + const char *adev_name); + +#endif /* __MESON_CLK_RST_AUX_H */ -- 2.43.0 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic