From patchwork Thu Feb 22 03:02:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Protsenko X-Patchwork-Id: 13566697 Received: from mail-oi1-f181.google.com (mail-oi1-f181.google.com [209.85.167.181]) (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 EBFD217561 for ; Thu, 22 Feb 2024 03:02:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708570964; cv=none; b=RY4LqexEkbwm7iBUVm+/qcEOZAxj1qvr69+VXu1wyTt9nGhLmHvV1SRmT46zLrD6yAGyFO6tUIZaD8dQqPRZH/ltU3kkPzXj1ECq0o4XwMN7Pdd64tZsVQG9h+ZC5P4qkbldod6PxfjVpU9Hg6uaPXyZFUmagV+U/xNNI8GZCb0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708570964; c=relaxed/simple; bh=8EM31Z5cZLIVs8DbsDC/S2VLghlY65Fl1bnwrB25vT8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=WqBCj75GRxwIxwzCVlNN5D/xZfRRriEbG7LLmyUZDEeESajXjwZdcww5EmD+xtGOAOaeqMsWItfLnTGLip1OMgq5grP6u640kXDa4jZ1bd2nnBwUer6eTtDRVzfHcZOVN1Gwp7EkFY4iBwQFeNo2bdixSDsFXgbBkEPI5G7IQTE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=mazCR3HC; arc=none smtp.client-ip=209.85.167.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="mazCR3HC" Received: by mail-oi1-f181.google.com with SMTP id 5614622812f47-3bba50cd318so5472913b6e.0 for ; Wed, 21 Feb 2024 19:02:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1708570961; x=1709175761; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=dA8iJf/laPqQRe+Yi4M7uYUdy+5iI2o8j4rYPxsJ3iw=; b=mazCR3HCPLvIde0WcMV+/umNY9ZcgpU7foNZiJEk4kWauw4IkO1mMoC18eI4uToHYH niZlOwGvpGZHPj6b7E66VBUwRrIpnnTS9V6IVxH6BDvIj8A1l4Y7TcEn3iZIhJ67R3Cn 8h+Jf2r4EnmDE+A9hb+DQ1mRMg3YjxR9sg9hKCWgAtX0ZLI2SMm3DPDYztILRxtYQZIK krBp/czyk5P+RCdBG10TF9pnG1TzP4LfCQMaCHxVGE6aIPJiYMU/ZlvZ7+E/sygHp/JA JmLQazu0STpn8FW9CROJfCXEUXxqE0ttRiQ6Kv7Nkhtv7klAYgBE7FwEMIsKWAGrn8kk 8LYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708570961; x=1709175761; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=dA8iJf/laPqQRe+Yi4M7uYUdy+5iI2o8j4rYPxsJ3iw=; b=Yn1MXHY1tUUfRSstMon63BuEHA+G9arKZuOzo0/skWOPGRDMYG7SaHwbeIcqLnca1a Aqxg32548xegXXbXm+0c1Nrm7DfsorhaEvpdSB5FF845hKxWWza2Y2TJ/xY4kECHqhUX F1s14/0URUglFUs19hIjvkdZbEWutyIkIa9/9IeITMjElwBskKJQe6QVKTI81Rbpt534 SwqsZyJVKOCuDvPQT0rHujC08wiNwUrWcUPKUFA4Tgo3IOseSdDUEo3FTnlaJtLrCmE2 PL3TDa4XI08v3OZ+cbVgpUjC48w22RhAwdnHgDMk+o2+fzI2llSPOeKrO2g6tPyqY8sM ECWA== X-Forwarded-Encrypted: i=1; AJvYcCWCCi8BzlbQhEG8HH746RKzrUEMYqOA41hh9dfogwjWOOGKw640M6vOJwwlrYtSlO8AJt0RYz4t5a21MarvcsxvXhLImOgsynX0 X-Gm-Message-State: AOJu0YynJxcWMhWWSgmw/aut2v7JfOM37MZ60DsuejRxDyK3o6fwo1T9 PFEp9Sn8RBV1GiKDsGVqFT8vyk5+pEkfTQccR5Xrlu00QHkeWVg0u4Jg2S6nV0Q= X-Google-Smtp-Source: AGHT+IENe0nxuoXBYPaz1EEYdHcMjdNKSHKJGqYj4olutBXIBul4W86ca3W7naxV1nOe2/b2wwewHA== X-Received: by 2002:a05:6808:3195:b0:3c1:66ec:5aa with SMTP id cd21-20020a056808319500b003c166ec05aamr10457919oib.22.1708570961120; Wed, 21 Feb 2024 19:02:41 -0800 (PST) Received: from localhost ([136.62.192.75]) by smtp.gmail.com with ESMTPSA id 5-20020aca1205000000b003c133696f42sm1768433ois.29.2024.02.21.19.02.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Feb 2024 19:02:40 -0800 (PST) From: Sam Protsenko To: Krzysztof Kozlowski , Sylwester Nawrocki , Chanwoo Choi Cc: Alim Akhtar , Michael Turquette , Stephen Boyd , Rob Herring , Conor Dooley , Tomasz Figa , linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 06/15] clk: samsung: Group CPU clock functions by chip Date: Wed, 21 Feb 2024 21:02:26 -0600 Message-Id: <20240222030235.27815-7-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240222030235.27815-1-semen.protsenko@linaro.org> References: <20240222030235.27815-1-semen.protsenko@linaro.org> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 clk-cpu.c is going to get messy as new chips support is added. Restructure the code by pulling related functions and definitions together, grouping those by their relation to a particular chip or other categories, to simplify the code navigation. No functional change. Signed-off-by: Sam Protsenko --- Changes in v2: - none drivers/clk/samsung/clk-cpu.c | 114 ++++++++++++++++++---------------- 1 file changed, 61 insertions(+), 53 deletions(-) diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c index 427018e8dd8c..d550a4bb632f 100644 --- a/drivers/clk/samsung/clk-cpu.c +++ b/drivers/clk/samsung/clk-cpu.c @@ -38,34 +38,6 @@ #include "clk.h" #include "clk-cpu.h" -#define E4210_SRC_CPU 0x0 -#define E4210_STAT_CPU 0x200 -#define E4210_DIV_CPU0 0x300 -#define E4210_DIV_CPU1 0x304 -#define E4210_DIV_STAT_CPU0 0x400 -#define E4210_DIV_STAT_CPU1 0x404 - -#define E5433_MUX_SEL2 0x008 -#define E5433_MUX_STAT2 0x208 -#define E5433_DIV_CPU0 0x400 -#define E5433_DIV_CPU1 0x404 -#define E5433_DIV_STAT_CPU0 0x500 -#define E5433_DIV_STAT_CPU1 0x504 - -#define E4210_DIV0_RATIO0_MASK GENMASK(2, 0) -#define E4210_DIV1_HPM_MASK GENMASK(6, 4) -#define E4210_DIV1_COPY_MASK GENMASK(2, 0) -#define E4210_MUX_HPM_MASK BIT(20) -#define E4210_DIV0_ATB_SHIFT 16 -#define E4210_DIV0_ATB_MASK (DIV_MASK << E4210_DIV0_ATB_SHIFT) - -/* Divider stabilization time, msec */ -#define MAX_STAB_TIME 10 -#define MAX_DIV 8 -#define DIV_MASK GENMASK(2, 0) -#define DIV_MASK_ALL GENMASK(31, 0) -#define MUX_MASK GENMASK(2, 0) - struct exynos_cpuclk; typedef int (*exynos_rate_change_fn_t)(struct clk_notifier_data *ndata, @@ -103,6 +75,15 @@ struct exynos_cpuclk { exynos_rate_change_fn_t post_rate_cb; }; +/* ---- Common code --------------------------------------------------------- */ + +/* Divider stabilization time, msec */ +#define MAX_STAB_TIME 10 +#define MAX_DIV 8 +#define DIV_MASK GENMASK(2, 0) +#define DIV_MASK_ALL GENMASK(31, 0) +#define MUX_MASK GENMASK(2, 0) + /* * Helper function to wait until divider(s) have stabilized after the divider * value has changed. @@ -142,33 +123,21 @@ static void wait_until_mux_stable(void __iomem *mux_reg, u32 mux_pos, pr_err("%s: re-parenting mux timed-out\n", __func__); } -/* common round rate callback usable for all types of CPU clocks */ -static long exynos_cpuclk_round_rate(struct clk_hw *hw, unsigned long drate, - unsigned long *prate) -{ - struct clk_hw *parent = clk_hw_get_parent(hw); - *prate = clk_hw_round_rate(parent, drate); - return *prate; -} +/* ---- Exynos 3/4/5 -------------------------------------------------------- */ -/* common recalc rate callback usable for all types of CPU clocks */ -static unsigned long exynos_cpuclk_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) -{ - /* - * The CPU clock output (armclk) rate is the same as its parent - * rate. Although there exist certain dividers inside the CPU - * clock block that could be used to divide the parent clock, - * the driver does not make use of them currently, except during - * frequency transitions. - */ - return parent_rate; -} +#define E4210_SRC_CPU 0x0 +#define E4210_STAT_CPU 0x200 +#define E4210_DIV_CPU0 0x300 +#define E4210_DIV_CPU1 0x304 +#define E4210_DIV_STAT_CPU0 0x400 +#define E4210_DIV_STAT_CPU1 0x404 -static const struct clk_ops exynos_cpuclk_clk_ops = { - .recalc_rate = exynos_cpuclk_recalc_rate, - .round_rate = exynos_cpuclk_round_rate, -}; +#define E4210_DIV0_RATIO0_MASK GENMASK(2, 0) +#define E4210_DIV1_HPM_MASK GENMASK(6, 4) +#define E4210_DIV1_COPY_MASK GENMASK(2, 0) +#define E4210_MUX_HPM_MASK BIT(20) +#define E4210_DIV0_ATB_SHIFT 16 +#define E4210_DIV0_ATB_MASK (DIV_MASK << E4210_DIV0_ATB_SHIFT) /* * Helper function to set the 'safe' dividers for the CPU clock. The parameters @@ -300,6 +269,15 @@ static int exynos_cpuclk_post_rate_change(struct clk_notifier_data *ndata, return 0; } +/* ---- Exynos5433 ---------------------------------------------------------- */ + +#define E5433_MUX_SEL2 0x008 +#define E5433_MUX_STAT2 0x208 +#define E5433_DIV_CPU0 0x400 +#define E5433_DIV_CPU1 0x404 +#define E5433_DIV_STAT_CPU0 0x500 +#define E5433_DIV_STAT_CPU1 0x504 + /* * Helper function to set the 'safe' dividers for the CPU clock. The parameters * div and mask contain the divider value and the register bit mask of the @@ -398,6 +376,36 @@ static int exynos5433_cpuclk_post_rate_change(struct clk_notifier_data *ndata, return 0; } +/* -------------------------------------------------------------------------- */ + +/* Common round rate callback usable for all types of CPU clocks */ +static long exynos_cpuclk_round_rate(struct clk_hw *hw, unsigned long drate, + unsigned long *prate) +{ + struct clk_hw *parent = clk_hw_get_parent(hw); + *prate = clk_hw_round_rate(parent, drate); + return *prate; +} + +/* Common recalc rate callback usable for all types of CPU clocks */ +static unsigned long exynos_cpuclk_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + /* + * The CPU clock output (armclk) rate is the same as its parent + * rate. Although there exist certain dividers inside the CPU + * clock block that could be used to divide the parent clock, + * the driver does not make use of them currently, except during + * frequency transitions. + */ + return parent_rate; +} + +static const struct clk_ops exynos_cpuclk_clk_ops = { + .recalc_rate = exynos_cpuclk_recalc_rate, + .round_rate = exynos_cpuclk_round_rate, +}; + /* * This notifier function is called for the pre-rate and post-rate change * notifications of the parent clock of cpuclk.