From patchwork Thu Jun 30 08:05:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12901351 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 6DD51CCA47B for ; Thu, 30 Jun 2022 08:09:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233866AbiF3IJv (ORCPT ); Thu, 30 Jun 2022 04:09:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36426 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233798AbiF3IJC (ORCPT ); Thu, 30 Jun 2022 04:09:02 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E53972252D; Thu, 30 Jun 2022 01:08:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1656576494; x=1688112494; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LzcT9PRBOETMeZFMi6u1K2uBQ8ZkHXso84gFS8NMZwc=; b=ejnFLeH6Pdkt4sp+nw2D10dA2RPqSZl3MlcFJNfqo4DFCoJ69n/To2an DF9dVZJx4zB8jgKo2TqOB/hXpU0CvPsMP1z5DvsHrCwYwPA2lzzFCkU5Z /R9oAbB14tYWIeONedtfXM0LfGe2Gj1i8vIXwWTS4XN7HpkFAV+ztUeZh rNzPEz2wj8ylS1/2E0BiBMcxfTg36KRxiP6mf9RLZ2fwdLmwepD7LMEft 17JF5gch8qVYRn8XHf9ZOWIwePQHo8U3BTaZboPMVAGmjNp1iAGOy3223 +YNEY+FmwT1jL45p4jgpu2ZuEdrApxBGL+zHv567vX5a4v8458+j0qAG0 Q==; X-IronPort-AV: E=Sophos;i="5.92,233,1650956400"; d="scan'208";a="170493002" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 30 Jun 2022 01:08:14 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Thu, 30 Jun 2022 01:08:14 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Thu, 30 Jun 2022 01:08:09 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Palmer Dabbelt , Conor Dooley , "Nicolas Ferre" , Claudiu Beznea , Philipp Zabel , "Daire McNamara" CC: Paul Walmsley , Albert Ou , , , , , Subject: [PATCH v1 11/14] clk: microchip: mpfs: simplify control reg access Date: Thu, 30 Jun 2022 09:05:30 +0100 Message-ID: <20220630080532.323731-12-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220630080532.323731-1-conor.dooley@microchip.com> References: <20220630080532.323731-1-conor.dooley@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The control reg addresses are known when the clocks are registered, so we can, instead of assigning a base pointer to the structs, assign the control reg addresses directly. Accordingly, remove the interim variables used during reads/writes to those registers. Signed-off-by: Conor Dooley --- drivers/clk/microchip/clk-mpfs.c | 42 +++++++++++++------------------- 1 file changed, 17 insertions(+), 25 deletions(-) diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c index 750f28481498..0330c2839a24 100644 --- a/drivers/clk/microchip/clk-mpfs.c +++ b/drivers/clk/microchip/clk-mpfs.c @@ -52,6 +52,7 @@ struct mpfs_msspll_hw_clock { #define to_mpfs_msspll_clk(_hw) container_of(_hw, struct mpfs_msspll_hw_clock, hw) struct mpfs_cfg_clock { + void __iomem *reg; const struct clk_div_table *table; u8 shift; u8 width; @@ -60,7 +61,6 @@ struct mpfs_cfg_clock { struct mpfs_cfg_hw_clock { struct mpfs_cfg_clock cfg; - void __iomem *sys_base; struct clk_hw hw; struct clk_init_data init; unsigned int id; @@ -70,12 +70,12 @@ struct mpfs_cfg_hw_clock { #define to_mpfs_cfg_clk(_hw) container_of(_hw, struct mpfs_cfg_hw_clock, hw) struct mpfs_periph_clock { + void __iomem *reg; u8 shift; }; struct mpfs_periph_hw_clock { struct mpfs_periph_clock periph; - void __iomem *sys_base; struct clk_hw hw; unsigned int id; }; @@ -214,14 +214,13 @@ static int mpfs_clk_register_msspll(struct device *dev, struct mpfs_msspll_hw_cl static int mpfs_clk_register_mssplls(struct device *dev, struct mpfs_msspll_hw_clock *msspll_hws, unsigned int num_clks, struct mpfs_clock_data *data) { - void __iomem *base = data->msspll_base; unsigned int i; int ret; for (i = 0; i < num_clks; i++) { struct mpfs_msspll_hw_clock *msspll_hw = &msspll_hws[i]; - ret = mpfs_clk_register_msspll(dev, msspll_hw, base); + ret = mpfs_clk_register_msspll(dev, msspll_hw, data->msspll_base); if (ret) return dev_err_probe(dev, ret, "failed to register msspll id: %d\n", CLK_MSSPLL); @@ -240,10 +239,9 @@ static unsigned long mpfs_cfg_clk_recalc_rate(struct clk_hw *hw, unsigned long p { struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw); struct mpfs_cfg_clock *cfg = &cfg_hw->cfg; - void __iomem *base_addr = cfg_hw->sys_base; u32 val; - val = readl_relaxed(base_addr + cfg_hw->reg_offset) >> cfg->shift; + val = readl_relaxed(cfg->reg) >> cfg->shift; val &= clk_div_mask(cfg->width); return divider_recalc_rate(hw, prate, val, cfg->table, cfg->flags, cfg->width); @@ -261,7 +259,6 @@ static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned { struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw); struct mpfs_cfg_clock *cfg = &cfg_hw->cfg; - void __iomem *base_addr = cfg_hw->sys_base; unsigned long flags; u32 val; int divider_setting; @@ -272,10 +269,10 @@ static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned return divider_setting; spin_lock_irqsave(&mpfs_clk_lock, flags); - val = readl_relaxed(base_addr + cfg_hw->reg_offset); + val = readl_relaxed(cfg->reg); val &= ~(clk_div_mask(cfg->width) << cfg_hw->cfg.shift); val |= divider_setting << cfg->shift; - writel_relaxed(val, base_addr + cfg_hw->reg_offset); + writel_relaxed(val, cfg->reg); spin_unlock_irqrestore(&mpfs_clk_lock, flags); @@ -318,9 +315,9 @@ static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = { }; static int mpfs_clk_register_cfg(struct device *dev, struct mpfs_cfg_hw_clock *cfg_hw, - void __iomem *sys_base) + void __iomem *base) { - cfg_hw->sys_base = sys_base; + cfg_hw->cfg.reg = base + cfg_hw->reg_offset; return devm_clk_hw_register(dev, &cfg_hw->hw); } @@ -328,14 +325,13 @@ static int mpfs_clk_register_cfg(struct device *dev, struct mpfs_cfg_hw_clock *c static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock *cfg_hws, unsigned int num_clks, struct mpfs_clock_data *data) { - void __iomem *sys_base = data->base; unsigned int i, id; int ret; for (i = 0; i < num_clks; i++) { struct mpfs_cfg_hw_clock *cfg_hw = &cfg_hws[i]; - ret = mpfs_clk_register_cfg(dev, cfg_hw, sys_base); + ret = mpfs_clk_register_cfg(dev, cfg_hw, data->base); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", cfg_hw->id); @@ -355,15 +351,14 @@ static int mpfs_periph_clk_enable(struct clk_hw *hw) { struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); struct mpfs_periph_clock *periph = &periph_hw->periph; - void __iomem *base_addr = periph_hw->sys_base; u32 reg, val; unsigned long flags; spin_lock_irqsave(&mpfs_clk_lock, flags); - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); + reg = readl_relaxed(periph->reg); val = reg | (1u << periph->shift); - writel_relaxed(val, base_addr + REG_SUBBLK_CLOCK_CR); + writel_relaxed(val, periph->reg); spin_unlock_irqrestore(&mpfs_clk_lock, flags); @@ -374,15 +369,14 @@ static void mpfs_periph_clk_disable(struct clk_hw *hw) { struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); struct mpfs_periph_clock *periph = &periph_hw->periph; - void __iomem *base_addr = periph_hw->sys_base; u32 reg, val; unsigned long flags; spin_lock_irqsave(&mpfs_clk_lock, flags); - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); + reg = readl_relaxed(periph->reg); val = reg & ~(1u << periph->shift); - writel_relaxed(val, base_addr + REG_SUBBLK_CLOCK_CR); + writel_relaxed(val, periph->reg); spin_unlock_irqrestore(&mpfs_clk_lock, flags); } @@ -391,10 +385,9 @@ static int mpfs_periph_clk_is_enabled(struct clk_hw *hw) { struct mpfs_periph_hw_clock *periph_hw = to_mpfs_periph_clk(hw); struct mpfs_periph_clock *periph = &periph_hw->periph; - void __iomem *base_addr = periph_hw->sys_base; u32 reg; - reg = readl_relaxed(base_addr + REG_SUBBLK_CLOCK_CR); + reg = readl_relaxed(periph->reg); if (reg & (1u << periph->shift)) return 1; @@ -461,9 +454,9 @@ static struct mpfs_periph_hw_clock mpfs_periph_clks[] = { }; static int mpfs_clk_register_periph(struct device *dev, struct mpfs_periph_hw_clock *periph_hw, - void __iomem *sys_base) + void __iomem *base) { - periph_hw->sys_base = sys_base; + periph_hw->periph.reg = base + REG_SUBBLK_CLOCK_CR; return devm_clk_hw_register(dev, &periph_hw->hw); } @@ -471,14 +464,13 @@ static int mpfs_clk_register_periph(struct device *dev, struct mpfs_periph_hw_cl static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_clock *periph_hws, int num_clks, struct mpfs_clock_data *data) { - void __iomem *sys_base = data->base; unsigned int i, id; int ret; for (i = 0; i < num_clks; i++) { struct mpfs_periph_hw_clock *periph_hw = &periph_hws[i]; - ret = mpfs_clk_register_periph(dev, periph_hw, sys_base); + ret = mpfs_clk_register_periph(dev, periph_hw, data->base); if (ret) return dev_err_probe(dev, ret, "failed to register clock id: %d\n", periph_hw->id);