From nobody Fri Apr 3 15:11:45 2026 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8CC61373C16; Fri, 13 Mar 2026 08:13:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=211.75.126.72 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773389632; cv=none; b=NaNxXyruzpyEbl80QjNUJo+MTRaCY+Q0h7RAOKgacc5gJN+215Bq21gauWbuLzjESZjhruIHuT8xjeNpW5rBkL/iUNsb20rYXFvHvB1iFKYU7GbrDMmoyxpasVqRDY4/ekG5IZ164IVad3t32vniwfpeydTGGEVLqAj4CzLctGo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773389632; c=relaxed/simple; bh=STz+KrKriVbn/Yi9tj9YoWqYlYGemVhtjz1CxiW3504=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=fWhf/CRN2SvY3Htrd7Bpawrv0z4h5dQBI3eZioa2JplXMhtnqxpdCwUGMKwc81+KbwLNsLJV5xCv1+dqaUszA+aJsI+FAelXGUBLqYPU34U+ow7nZ/BzRj6dWcnOa7RCa3dXFvTwkFHzjxUSZ9ofiBlpOcSCcR99i6EoEdiU2ss= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com; spf=pass smtp.mailfrom=realtek.com; dkim=pass (2048-bit key) header.d=realtek.com header.i=@realtek.com header.b=rWX6Fx7i; arc=none smtp.client-ip=211.75.126.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=realtek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=realtek.com header.i=@realtek.com header.b="rWX6Fx7i" X-SpamFilter-By: ArmorX SpamTrap 5.80 with qID 62D8B13i8053105, This message is accepted by code: ctloc85258 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=realtek.com; s=dkim; t=1773389461; bh=Rvj1u7dJN3NtS3hNMu0YqdgNoq25DOqHQM5HKAgQ9Nk=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding:Content-Type; b=rWX6Fx7i/NAGzq1PqoFgepMUQfoBOHF6litSME5gBxdj7hpX2XvZ2D8Aim40iMWIQ yLb1IEm9wiJgw5Kj/xcF90ecdKFGwVW0gn5UrTteurpsCICK5D2dmVqy447fKdls/C J3FinTTXyT8xQ4OkLB1wvU0gMxnswGtJEgTy327qTE8QWIs+L24xXFoovsj0NtwaZ3 8s0JZjOdzHbMBjRAIDo03VSKRS1eSMKz5KYcX0rAiN4SceLOzzP+DQTDkMx7Zp8Ytg vOt3JvDZf8Gi5124/i8uhggl2gTFhkGTR6KFzQZEBVbrL2l0JzOIyIdU22wQfHDo0l X+bNzEdsiOHwQ== Received: from mail.realtek.com (rtkexhmbs02.realtek.com.tw[172.21.6.41]) by rtits2.realtek.com.tw (8.15.2/3.21/5.94) with ESMTPS id 62D8B13i8053105 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 13 Mar 2026 16:11:01 +0800 Received: from RTKEXHMBS01.realtek.com.tw (172.21.6.40) by RTKEXHMBS02.realtek.com.tw (172.21.6.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Fri, 13 Mar 2026 16:11:02 +0800 Received: from RTKEXHMBS05.realtek.com.tw (10.21.1.55) by RTKEXHMBS01.realtek.com.tw (172.21.6.40) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Fri, 13 Mar 2026 16:11:01 +0800 Received: from cn1dhc-k02 (172.21.252.101) by RTKEXHMBS05.realtek.com.tw (10.21.1.55) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Fri, 13 Mar 2026 16:11:01 +0800 From: Yu-Chun Lin To: , , , , , , , , CC: , , , , , , , , Subject: [PATCH v4 04/10] clk: realtek: Introduce a common probe() Date: Fri, 13 Mar 2026 16:10:54 +0800 Message-ID: <20260313081100.596224-5-eleanor.lin@realtek.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260313081100.596224-1-eleanor.lin@realtek.com> References: <20260313081100.596224-1-eleanor.lin@realtek.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Cheng-Yu Lee Add rtk_clk_probe() to set up the shared regmap, register clock hardware, add the clock provider, and optionally register a reset controller when reset bank data is provided. Signed-off-by: Cheng-Yu Lee Co-developed-by: Yu-Chun Lin Signed-off-by: Yu-Chun Lin --- Changes in v4: - None. --- drivers/clk/realtek/Makefile | 1 + drivers/clk/realtek/common.c | 64 ++++++++++++++++++++++++++++++++++++ drivers/clk/realtek/common.h | 43 ++++++++++++++++++++++++ 3 files changed, 108 insertions(+) create mode 100644 drivers/clk/realtek/common.c create mode 100644 drivers/clk/realtek/common.h diff --git a/drivers/clk/realtek/Makefile b/drivers/clk/realtek/Makefile index 52267de2eef4..4041951b7c62 100644 --- a/drivers/clk/realtek/Makefile +++ b/drivers/clk/realtek/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_RTK_CLK_COMMON) +=3D clk-rtk.o =20 +clk-rtk-y +=3D common.o clk-rtk-y +=3D reset.o diff --git a/drivers/clk/realtek/common.c b/drivers/clk/realtek/common.c new file mode 100644 index 000000000000..c6540d36560c --- /dev/null +++ b/drivers/clk/realtek/common.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2019 Realtek Semiconductor Corporation + * Author: Cheng-Yu Lee + */ + +#include +#include +#include +#include +#include "common.h" + +int rtk_clk_probe(struct platform_device *pdev, const struct rtk_clk_desc = *desc) +{ + int i, ret; + struct regmap *regmap; + struct device *dev =3D &pdev->dev; + struct rtk_reset_initdata reset_initdata =3D {0}; + + regmap =3D device_node_to_regmap(pdev->dev.of_node); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), "failed to get regmap\n"); + + for (i =3D 0; i < desc->num_clks; i++) + desc->clks[i]->regmap =3D regmap; + + for (i =3D 0; i < desc->clk_data->num; i++) { + struct clk_hw *hw =3D desc->clk_data->hws[i]; + + if (!hw) + continue; + + ret =3D devm_clk_hw_register(dev, hw); + + if (ret) { + dev_warn(dev, "failed to register hw of clk%d: %d\n", i, + ret); + desc->clk_data->hws[i] =3D NULL; + } + } + + ret =3D devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, + desc->clk_data); + if (ret) + return dev_err_probe(dev, ret, "failed to add clock provider\n"); + + if (!desc->num_reset_banks) + return 0; + + if (!desc->reset_banks) + return dev_err_probe(dev, -EINVAL, + "Missing reset banks data though num_reset_banks is %zu\n", + desc->num_reset_banks); + + reset_initdata.regmap =3D regmap; + reset_initdata.num_banks =3D desc->num_reset_banks; + reset_initdata.banks =3D desc->reset_banks; + + return rtk_reset_controller_add(dev, &reset_initdata); +} +EXPORT_SYMBOL_GPL(rtk_clk_probe); + +MODULE_DESCRIPTION("Realtek clock infrastructure"); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/realtek/common.h b/drivers/clk/realtek/common.h new file mode 100644 index 000000000000..4e2cc9650a23 --- /dev/null +++ b/drivers/clk/realtek/common.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2016-2019 Realtek Semiconductor Corporation + * Author: Cheng-Yu Lee + */ + +#ifndef __CLK_REALTEK_COMMON_H +#define __CLK_REALTEK_COMMON_H + +#include +#include +#include +#include +#include +#include "reset.h" + +#define __clk_regmap_hw(_p) ((_p)->hw) + +struct device; +struct platform_device; + +struct clk_regmap { + struct clk_hw hw; + struct regmap *regmap; +}; + +struct rtk_clk_desc { + struct clk_hw_onecell_data *clk_data; + struct clk_regmap **clks; + size_t num_clks; + struct rtk_reset_bank *reset_banks; + size_t num_reset_banks; +}; + +static inline struct clk_regmap *to_clk_regmap(struct clk_hw *hw) +{ + return container_of(hw, struct clk_regmap, hw); +} + +int rtk_clk_probe(struct platform_device *pdev, + const struct rtk_clk_desc *desc); + +#endif /* __CLK_REALTEK_COMMON_H */ --=20 2.34.1