From patchwork Thu Jun 13 01:51:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shengjiu Wang X-Patchwork-Id: 13695881 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 1E41AC27C53 for ; Thu, 13 Jun 2024 02:08:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=i8Pd9TkHES9TjS1xw67meeYHU341Q4OItckgIixOceU=; b=PhVi+bSFvkcrmFqFVrmptzc19N LAobpnlWgWBloKyRDrfkh69T6bsaDO1aSzPO/BTFfDakUAgv3elq//61jbhyYbLrKBd9BWb1SWRKn Tu8WLBb/p68EeCV4P1Qa6UkLSnnDw/iPSM5HxNMtyctYtXKA0HDeaWj+LCxB3nrRYpNeWKb4yS/E5 NDIpNYdVhk43og+rDt2EUxMVvtbwwp9xGdZMbkLJHWAjJBWxszRlrj7v+y7yt/CLwbaqQirOYbsLr 4hnf5szxg0QzAm5RY/LJ6/OvwQd5XM2G5Egf82AUi3hiQ1nhYG6CdipBDa0fg2GnCVZEKbpk7TRQR piJttDnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHZsw-0000000Eo8q-3LiL; Thu, 13 Jun 2024 02:08:18 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHZsi-0000000Eo0Z-3I9s for linux-arm-kernel@lists.infradead.org; Thu, 13 Jun 2024 02:08:07 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 336331A1526; Thu, 13 Jun 2024 04:08:03 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 9A6D41A1503; Thu, 13 Jun 2024 04:08:02 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id C27BB181D0FD; Thu, 13 Jun 2024 10:08:00 +0800 (+08) From: Shengjiu Wang To: p.zabel@pengutronix.de, abelvesa@kernel.org, peng.fan@nxp.com, mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, marex@denx.de, linux-clk@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, shengjiu.wang@gmail.com Subject: [PATCH v7 2/5] clk: imx: clk-audiomix: Add reset controller Date: Thu, 13 Jun 2024 09:51:19 +0800 Message-Id: <1718243482-18552-3-git-send-email-shengjiu.wang@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1718243482-18552-1-git-send-email-shengjiu.wang@nxp.com> References: <1718243482-18552-1-git-send-email-shengjiu.wang@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240612_190805_118008_F185DD04 X-CRM114-Status: GOOD ( 15.34 ) 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 Audiomix block control can be a reset controller for Enhanced Audio Return Channel (EARC), which is one of modules in this audiomix subsystem. The reset controller is supported by the auxiliary device framework. Signed-off-by: Shengjiu Wang Reviewed-by: Frank Li --- drivers/clk/imx/Kconfig | 1 + drivers/clk/imx/clk-imx8mp-audiomix.c | 63 +++++++++++++++++++++++++++ 2 files changed, 64 insertions(+) diff --git a/drivers/clk/imx/Kconfig b/drivers/clk/imx/Kconfig index 6da0fba68225..9edfb030bea9 100644 --- a/drivers/clk/imx/Kconfig +++ b/drivers/clk/imx/Kconfig @@ -81,6 +81,7 @@ config CLK_IMX8MP tristate "IMX8MP CCM Clock Driver" depends on ARCH_MXC || COMPILE_TEST select MXC_CLK + select AUXILIARY_BUS help Build the driver for i.MX8MP CCM Clock Driver diff --git a/drivers/clk/imx/clk-imx8mp-audiomix.c b/drivers/clk/imx/clk-imx8mp-audiomix.c index b381d6f784c8..517b1f88661b 100644 --- a/drivers/clk/imx/clk-imx8mp-audiomix.c +++ b/drivers/clk/imx/clk-imx8mp-audiomix.c @@ -5,6 +5,7 @@ * Copyright (C) 2022 Marek Vasut */ +#include #include #include #include @@ -13,6 +14,7 @@ #include #include #include +#include #include @@ -217,6 +219,63 @@ struct clk_imx8mp_audiomix_priv { struct clk_hw_onecell_data clk_data; }; +#if IS_ENABLED(CONFIG_RESET_CONTROLLER) + +static void clk_imx8mp_audiomix_reset_unregister_adev(void *_adev) +{ + struct auxiliary_device *adev = _adev; + + auxiliary_device_delete(adev); + auxiliary_device_uninit(adev); +} + +static void clk_imx8mp_audiomix_reset_adev_release(struct device *dev) +{ + struct auxiliary_device *adev = to_auxiliary_dev(dev); + + kfree(adev); +} + +static int clk_imx8mp_audiomix_reset_controller_register(struct device *dev, + struct clk_imx8mp_audiomix_priv *priv) +{ + struct auxiliary_device *adev __free(kfree) = NULL; + int ret; + + if (!of_property_present(dev->of_node, "#reset-cells")) + return 0; + + adev = kzalloc(sizeof(*adev), GFP_KERNEL); + if (!adev) + return -ENOMEM; + + adev->name = "reset"; + adev->dev.parent = dev; + adev->dev.release = clk_imx8mp_audiomix_reset_adev_release; + + ret = auxiliary_device_init(adev); + if (ret) + return ret; + + ret = auxiliary_device_add(adev); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + return devm_add_action_or_reset(dev, clk_imx8mp_audiomix_reset_unregister_adev, + no_free_ptr(adev)); +} + +#else /* !CONFIG_RESET_CONTROLLER */ + +static int clk_imx8mp_audiomix_reset_controller_register(struct clk_imx8mp_audiomix_priv *priv) +{ + return 0; +} + +#endif /* !CONFIG_RESET_CONTROLLER */ + static void clk_imx8mp_audiomix_save_restore(struct device *dev, bool save) { struct clk_imx8mp_audiomix_priv *priv = dev_get_drvdata(dev); @@ -337,6 +396,10 @@ static int clk_imx8mp_audiomix_probe(struct platform_device *pdev) if (ret) goto err_clk_register; + ret = clk_imx8mp_audiomix_reset_controller_register(dev, priv); + if (ret) + goto err_clk_register; + pm_runtime_put_sync(dev); return 0;