From patchwork Tue Feb 21 11:55:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13147743 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 5CDA7C6FD18 for ; Tue, 21 Feb 2023 11:58:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233889AbjBUL6I (ORCPT ); Tue, 21 Feb 2023 06:58:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234549AbjBUL5V (ORCPT ); Tue, 21 Feb 2023 06:57:21 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB38128211; Tue, 21 Feb 2023 03:56:50 -0800 (PST) Received: from IcarusMOD.eternityproject.eu (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 27C1266021D6; Tue, 21 Feb 2023 11:56:22 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1676980583; bh=Ods8oGr6IDmSNHDIC/Lgn1UYdRZOCHtvm+3+FE6PlSE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T2Vfu8d8URVqI6C4zqFI7jtG9/+HREouol1Tf4nBAJ6OIcEep0VdbDMkiAzd9iAc6 S7UiMNoU3ms0kM82rBuq73VPMq5yZmZD8WAtHTCWNJ/rzxVLzAODBMi/RpiHrGCUqQ QzZjfC2JlBZxdsVg++za+5Voo+fajQprQSKtciaLdI3znEULONGI58PV08yorPDi6K biREGTfTHzvy0ISHCvQqHnFZI67ToqtByDg/PBma7OxeK3APTzzrYilp+eEFNwz15P AEdSJczU/hRuNSIaQda1KvwNMdiUBVaU1QdhSlGoF1EIuRn5VxBNSPvciwmssRdUHd 4PfxFsLIH86Sg== From: AngeloGioacchino Del Regno To: mturquette@baylibre.com Cc: sboyd@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, wenst@chromium.org, johnson.wang@mediatek.com, miles.chen@mediatek.com, chun-jie.chen@mediatek.com, daniel@makrotopia.org, fparent@baylibre.com, msp@baylibre.com, nfraprado@collabora.com, rex-bc.chen@mediatek.com, zhaojh329@gmail.com, sam.shih@mediatek.com, edward-jw.yang@mediatek.com, yangyingliang@huawei.com, granquet@baylibre.com, pablo.sun@mediatek.com, sean.wang@mediatek.com, chen.zhong@mediatek.com, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH v4 21/54] clk: mediatek: mt8183: Convert all remaining clocks to common probe Date: Tue, 21 Feb 2023 12:55:16 +0100 Message-Id: <20230221115549.360132-22-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230221115549.360132-1-angelogioacchino.delregno@collabora.com> References: <20230221115549.360132-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Switch to mtk_clk_simple_{probe,remove}() for infracfg and topckgen clocks on MT8183 to allow full module build for clock drivers. Differently from other MediaTek clock drivers, it was necessary to change the name of the `clk13m` clock, as that is already declared in the SoC's devicetree as a "fixed-factor-clock" (with the same name) and redeclaring it here would obviously fail to register the entire clock controller; this clock wasn't dropped only to retain compatibility with older devicetrees As a note, the `clk13m` clock is not mentioned in any parent names array(s) as the correct one (csw_f26m_d2) is already used in place of that. Thanks to the conversion, more error handling was added to the clocks registration. Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Chen-Yu Tsai --- drivers/clk/mediatek/clk-mt8183.c | 166 ++++++------------------------ 1 file changed, 34 insertions(+), 132 deletions(-) diff --git a/drivers/clk/mediatek/clk-mt8183.c b/drivers/clk/mediatek/clk-mt8183.c index 9da193d7782d..02176ee97cd2 100644 --- a/drivers/clk/mediatek/clk-mt8183.c +++ b/drivers/clk/mediatek/clk-mt8183.c @@ -25,11 +25,14 @@ static const struct mtk_fixed_clk top_fixed_clks[] = { FIXED_CLK(CLK_TOP_UNIVP_192M, "univpll_192m", "univpll", 192000000), }; -static const struct mtk_fixed_factor top_early_divs[] = { - FACTOR(CLK_TOP_CLK13M, "clk13m", "clk26m", 1, 2), -}; - +/* + * To retain compatibility with older devicetrees, we keep CLK_TOP_CLK13M + * valid, but renamed from "clk13m" (defined as fixed clock in the new + * devicetrees) to "clk26m_d2", satisfying the older clock assignments. + * This means that on new devicetrees "clk26m_d2" is unused. + */ static const struct mtk_fixed_factor top_divs[] = { + FACTOR(CLK_TOP_CLK13M, "clk26m_d2", "clk26m", 1, 2), FACTOR(CLK_TOP_F26M_CK_D2, "csw_f26m_ck_d2", "clk26m", 1, 2), FACTOR_FLAGS(CLK_TOP_SYSPLL_CK, "syspll_ck", "mainpll", 1, 1, 0), FACTOR_FLAGS(CLK_TOP_SYSPLL_D2, "syspll_d2", "syspll_ck", 1, 2, 0), @@ -803,26 +806,6 @@ static const struct mtk_clk_rst_desc clk_rst_desc = { .rst_bank_nr = ARRAY_SIZE(infra_rst_ofs), }; -static struct clk_hw_onecell_data *top_clk_data; - -static void clk_mt8183_top_init_early(struct device_node *node) -{ - int i; - - top_clk_data = mtk_alloc_clk_data(CLK_TOP_NR_CLK); - - for (i = 0; i < CLK_TOP_NR_CLK; i++) - top_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER); - - mtk_clk_register_factors(top_early_divs, ARRAY_SIZE(top_early_divs), - top_clk_data); - - of_clk_add_hw_provider(node, of_clk_hw_onecell_get, top_clk_data); -} - -CLK_OF_DECLARE_DRIVER(mt8183_topckgen, "mediatek,mt8183-topckgen", - clk_mt8183_top_init_early); - /* Register mux notifier for MFG mux */ static int clk_mt8183_reg_mfg_mux_notifier(struct device *dev, struct clk *clk) { @@ -845,134 +828,53 @@ static int clk_mt8183_reg_mfg_mux_notifier(struct device *dev, struct clk *clk) return devm_mtk_clk_mux_notifier_register(dev, clk, mfg_mux_nb); } -static int clk_mt8183_top_probe(struct platform_device *pdev) -{ - void __iomem *base; - struct device_node *node = pdev->dev.of_node; - int ret; - - base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(base)) - return PTR_ERR(base); - - mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks), - top_clk_data); - - mtk_clk_register_factors(top_early_divs, ARRAY_SIZE(top_early_divs), - top_clk_data); - - mtk_clk_register_factors(top_divs, ARRAY_SIZE(top_divs), top_clk_data); - - mtk_clk_register_muxes(&pdev->dev, top_muxes, - ARRAY_SIZE(top_muxes), node, - &mt8183_clk_lock, top_clk_data); - - mtk_clk_register_composites(&pdev->dev, top_aud_comp, - ARRAY_SIZE(top_aud_comp), base, - &mt8183_clk_lock, top_clk_data); - - mtk_clk_register_gates(&pdev->dev, node, top_clks, - ARRAY_SIZE(top_clks), top_clk_data); - - ret = clk_mt8183_reg_mfg_mux_notifier(&pdev->dev, - top_clk_data->hws[CLK_TOP_MUX_MFG]->clk); - if (ret) - return ret; - - return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, - top_clk_data); -} - -static int clk_mt8183_mcu_probe(struct platform_device *pdev) -{ - struct clk_hw_onecell_data *clk_data; - struct device_node *node = pdev->dev.of_node; - void __iomem *base; - - base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(base)) - return PTR_ERR(base); - - clk_data = mtk_alloc_clk_data(CLK_MCU_NR_CLK); - - mtk_clk_register_composites(&pdev->dev, mcu_muxes, - ARRAY_SIZE(mcu_muxes), base, - &mt8183_clk_lock, clk_data); - - return of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); -} - -static const struct of_device_id of_match_clk_mt8183[] = { - { - .compatible = "mediatek,mt8183-topckgen", - .data = clk_mt8183_top_probe, - }, { - .compatible = "mediatek,mt8183-mcucfg", - .data = clk_mt8183_mcu_probe, - }, { - /* sentinel */ - } -}; - -static int clk_mt8183_probe(struct platform_device *pdev) -{ - int (*clk_probe)(struct platform_device *pdev); - int r; - - clk_probe = of_device_get_match_data(&pdev->dev); - if (!clk_probe) - return -EINVAL; - - r = clk_probe(pdev); - if (r) - dev_err(&pdev->dev, - "could not register clock provider: %s: %d\n", - pdev->name, r); - - return r; -} - static const struct mtk_clk_desc infra_desc = { .clks = infra_clks, .num_clks = ARRAY_SIZE(infra_clks), .rst_desc = &clk_rst_desc, }; +static const struct mtk_clk_desc mcu_desc = { + .composite_clks = mcu_muxes, + .num_composite_clks = ARRAY_SIZE(mcu_muxes), + .clk_lock = &mt8183_clk_lock, +}; + static const struct mtk_clk_desc peri_desc = { .clks = peri_clks, .num_clks = ARRAY_SIZE(peri_clks), }; -static const struct of_device_id of_match_clk_mt8183_simple[] = { +static const struct mtk_clk_desc topck_desc = { + .fixed_clks = top_fixed_clks, + .num_fixed_clks = ARRAY_SIZE(top_fixed_clks), + .factor_clks = top_divs, + .num_factor_clks = ARRAY_SIZE(top_divs), + .mux_clks = top_muxes, + .num_mux_clks = ARRAY_SIZE(top_muxes), + .composite_clks = top_aud_comp, + .num_composite_clks = ARRAY_SIZE(top_aud_comp), + .clks = top_clks, + .num_clks = ARRAY_SIZE(top_clks), + .clk_lock = &mt8183_clk_lock, + .clk_notifier_func = clk_mt8183_reg_mfg_mux_notifier, + .mfg_clk_idx = CLK_TOP_MUX_MFG, +}; + +static const struct of_device_id of_match_clk_mt8183[] = { { .compatible = "mediatek,mt8183-infracfg", .data = &infra_desc }, + { .compatible = "mediatek,mt8183-mcucfg", .data = &mcu_desc }, { .compatible = "mediatek,mt8183-pericfg", .data = &peri_desc, }, + { .compatible = "mediatek,mt8183-topckgen", .data = &topck_desc }, { /* sentinel */ } }; -static struct platform_driver clk_mt8183_simple_drv = { +static struct platform_driver clk_mt8183_drv = { .probe = mtk_clk_simple_probe, .remove = mtk_clk_simple_remove, - .driver = { - .name = "clk-mt8183-simple", - .of_match_table = of_match_clk_mt8183_simple, - }, -}; - -static struct platform_driver clk_mt8183_drv = { - .probe = clk_mt8183_probe, .driver = { .name = "clk-mt8183", .of_match_table = of_match_clk_mt8183, }, }; - -static int __init clk_mt8183_init(void) -{ - int ret = platform_driver_register(&clk_mt8183_drv); - - if (ret) - return ret; - return platform_driver_register(&clk_mt8183_simple_drv); -} - -arch_initcall(clk_mt8183_init); +module_platform_driver(clk_mt8183_drv)