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 73A52CAC58E for ; Mon, 15 Sep 2025 09:55:25 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Bx3JrgirJOhZKbW0LqRD2iPiBKaOdZEVeDvUEFb7hXI=; b=vJaiHdO24A0Rt1 k/oRR6PC5z8lRrcfwDkqooSS4TEPV4fenK/roSr9PHwWE9/BBacUxORRxOGv5iWj7/rvqs/lsy95P qBhi5dW7tN0zVHEUIUZxj8ej+lktK8R9GmJvg9XmwB5n/c4I4wpfbbo2HSrd6qymA4EHfXdxlOu0H 2nsfo01d8IZy3DeBdv6PeC2YFSAOGa+E7tyMsseIfOllXf03P6gsuYGHMY8n5GtGFQc0Rp1KT7v1d 4MxIxcNHaqkPQeYOOhPS+UpV249nmoTH8rw/W7+7tFqVR+Pa0ZyRIbV1NfO/Fk6w6wD6R5TySAHhL s29VogST/AqGufZ9YsOw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uy5vc-00000003XfV-00dH; Mon, 15 Sep 2025 09:55:20 +0000 Received: from layka.disroot.org ([178.21.23.139]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uy5vZ-00000003Xdh-46nH for linux-riscv@lists.infradead.org; Mon, 15 Sep 2025 09:55:19 +0000 Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 8657F25D67; Mon, 15 Sep 2025 11:55:16 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id hgoPlgG5Q7LO; Mon, 15 Sep 2025 11:55:15 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1757930115; bh=AyARZ8O9kOKQYCzMN7H8nfyDa+QfPPanHy+EOHRlTZM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=iCBSPSqSf/ae2cdGdzoi0nIYnHcl9swtZg5xYgVMHaA+RK+TiTywEm6ndQBr/wYzU W9XUHaRhY1aWw1HH3B0u0+ZF7zat9tAFKGny94W7SHYKCoiEYoNsPxcab1nGWX7kXs UjnJDlDC5Y/MK0I7Dt0NFNeWysLtScQIZpCMMRis7VhTTk/XfQuXr4OUMoz3tgXfv6 JRCNeuTZFUpXmXRKqTRPE65/GaKF0vLIWWqkIhd48jenzvqh+zbnQFSIJrmymlXcRz EwapK/485NYNDeYc7YIyP/U8PGGiLNKCg0R618XoWgwCgxvgJYtj8TxbCFvs5LU8qk LyD9oulumYEJA== From: Yao Zi To: Drew Fustini , Guo Ren , Fu Wei , Philipp Zabel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Michal Wilczynski Subject: [PATCH v2 3/5] reset: th1520: Prepare for supporting multiple controllers Date: Mon, 15 Sep 2025 09:53:29 +0000 Message-ID: <20250915095331.53350-4-ziyao@disroot.org> In-Reply-To: <20250915095331.53350-1-ziyao@disroot.org> References: <20250915095331.53350-1-ziyao@disroot.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250915_025518_156991_D234F5E9 X-CRM114-Status: GOOD ( 14.61 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Han Gao , linux-kernel@vger.kernel.org, Han Gao , linux-riscv@lists.infradead.org, Yao Zi Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org TH1520 SoC is divided into several subsystems, shipping distinct reset controllers with similar control logic. Let's make reset signal mapping a data structure specific to one compatible to prepare for introduction of more reset controllers in the future. Signed-off-by: Yao Zi --- drivers/reset/reset-th1520.c | 42 +++++++++++++++++++++++++----------- 1 file changed, 30 insertions(+), 12 deletions(-) diff --git a/drivers/reset/reset-th1520.c b/drivers/reset/reset-th1520.c index 14d964a9c6b6..2b65a95ed021 100644 --- a/drivers/reset/reset-th1520.c +++ b/drivers/reset/reset-th1520.c @@ -29,14 +29,20 @@ #define TH1520_HDMI_SW_MAIN_RST BIT(0) #define TH1520_HDMI_SW_PRST BIT(1) +struct th1520_reset_map { + u32 bit; + u32 reg; +}; + struct th1520_reset_priv { struct reset_controller_dev rcdev; struct regmap *map; + const struct th1520_reset_map *resets; }; -struct th1520_reset_map { - u32 bit; - u32 reg; +struct th1520_reset_data { + const struct th1520_reset_map *resets; + size_t num; }; static const struct th1520_reset_map th1520_resets[] = { @@ -90,7 +96,7 @@ static int th1520_reset_assert(struct reset_controller_dev *rcdev, struct th1520_reset_priv *priv = to_th1520_reset(rcdev); const struct th1520_reset_map *reset; - reset = &th1520_resets[id]; + reset = &priv->resets[id]; return regmap_update_bits(priv->map, reset->reg, reset->bit, 0); } @@ -101,7 +107,7 @@ static int th1520_reset_deassert(struct reset_controller_dev *rcdev, struct th1520_reset_priv *priv = to_th1520_reset(rcdev); const struct th1520_reset_map *reset; - reset = &th1520_resets[id]; + reset = &priv->resets[id]; return regmap_update_bits(priv->map, reset->reg, reset->bit, reset->bit); @@ -120,11 +126,14 @@ static const struct regmap_config th1520_reset_regmap_config = { static int th1520_reset_probe(struct platform_device *pdev) { + const struct th1520_reset_data *data; struct device *dev = &pdev->dev; struct th1520_reset_priv *priv; void __iomem *base; int ret; + data = device_get_match_data(dev); + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; @@ -138,22 +147,31 @@ static int th1520_reset_probe(struct platform_device *pdev) if (IS_ERR(priv->map)) return PTR_ERR(priv->map); - /* Initialize GPU resets to asserted state */ - ret = regmap_update_bits(priv->map, TH1520_GPU_RST_CFG, - TH1520_GPU_RST_CFG_MASK, 0); - if (ret) - return ret; + if (of_device_is_compatible(dev->of_node, "thead,th1520-reset")) { + /* Initialize GPU resets to asserted state */ + ret = regmap_update_bits(priv->map, TH1520_GPU_RST_CFG, + TH1520_GPU_RST_CFG_MASK, 0); + if (ret) + return ret; + } priv->rcdev.owner = THIS_MODULE; - priv->rcdev.nr_resets = ARRAY_SIZE(th1520_resets); + priv->rcdev.nr_resets = data->num; priv->rcdev.ops = &th1520_reset_ops; priv->rcdev.of_node = dev->of_node; + priv->resets = data->resets; + return devm_reset_controller_register(dev, &priv->rcdev); } +static const struct th1520_reset_data th1520_reset_data = { + .resets = th1520_resets, + .num = ARRAY_SIZE(th1520_resets), +}; + static const struct of_device_id th1520_reset_match[] = { - { .compatible = "thead,th1520-reset" }, + { .compatible = "thead,th1520-reset", .data = &th1520_reset_data }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, th1520_reset_match); -- 2.50.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv