From patchwork Thu Oct 14 19:53:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William McVicker X-Patchwork-Id: 12559321 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49418C433F5 for ; Thu, 14 Oct 2021 19:53:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35048610A0 for ; Thu, 14 Oct 2021 19:53:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233779AbhJNT4A (ORCPT ); Thu, 14 Oct 2021 15:56:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233765AbhJNT4A (ORCPT ); Thu, 14 Oct 2021 15:56:00 -0400 Received: from mail-pj1-x1049.google.com (mail-pj1-x1049.google.com [IPv6:2607:f8b0:4864:20::1049]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1DBABC061753 for ; Thu, 14 Oct 2021 12:53:55 -0700 (PDT) Received: by mail-pj1-x1049.google.com with SMTP id c10-20020a17090ab28a00b0019ce70ee349so3793603pjr.7 for ; Thu, 14 Oct 2021 12:53:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=0GKVOGkPMBjbaiErSowZ5WVlrNu9T3lMTGZvDZcgDiQ=; b=O2y756NxwhwBs3hCW4hzTGJSUy8ycUL5Kon8QUqqwOzeQTsmkbudN71Z8nfyOh1ajI 5uzBMRTKntgvLwftR+g17/k6r/G2Cw1LPAGWICo/u28QZABdyNojDa7VGTnSfxCLybYx 3HiHSKCLyV4mwqU+PdHrKOZembQ2GXb0IyHQcxsOEk0LRO1/S/e4/E8uPZwiY/g1jTm1 CjfmJVvtqS8COv4tY4bqiJW5z1jUx2P6nHjEJPp/a79pTD2T8fgw1jCZ8ap+j/SX2skt WyKFUkaT5La9nbizAqKE+rW9oKqJjzoWmCmIvoP/XjRvMOJHFCyWzZ4yEjoDUQ1F9liT Rhgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=0GKVOGkPMBjbaiErSowZ5WVlrNu9T3lMTGZvDZcgDiQ=; b=ZKDe/QcUhuKg7IHWoRjIoLCfEIP1pzQ7lgJK/NH2f/nHoXv+/BalSrWxydm6ZTJ7sK tVwdvj5r3uDKPk1e1SqkF9/Iw8fAIF0ex9p7sAiVpdpvDrcMGGqZDUHsIBiT1rm29jzJ K153BOWzWCCZQobvYY0iwbII0e8xfS54AsAr5eP6JF6xDsomIqWGG9BO8zvZuheqyO0a 8jeAJd+W7ALFRmW5mGrZ06u2sfY9V3ZRvTBJA1szgdUhYh1mqiKHrjHB0QfxTqRQjd0o ZVS7AsFzmrvFgez4ZcA8MNdvtH38yasd2iCLQQZnoK+/X1hE5rHzis56PPmqAycos+zO NYDw== X-Gm-Message-State: AOAM5302ira4+kDWWMkoRLnc4qGcHLW1nVeSSJUYsNyX02tl2jMmgd4C 323Ff7isSKuV8qBCWlS7LQOE55RgHn7/xKVUAXY= X-Google-Smtp-Source: ABdhPJz4vELIwsudd5JRcFZ1QD4iWztE+ipKg383YgxXZq5OfuRfj2Qb43PQEb0T9XFYzew4p7mFVl9csvZEHEdEU4c= X-Received: from willmcvicker.c.googlers.com ([fda3:e722:ac3:cc00:24:72f4:c0a8:2dd0]) (user=willmcvicker job=sendgmr) by 2002:a17:903:31cd:b0:134:5b6f:2ff8 with SMTP id v13-20020a17090331cd00b001345b6f2ff8mr6925892ple.46.1634241234621; Thu, 14 Oct 2021 12:53:54 -0700 (PDT) Date: Thu, 14 Oct 2021 19:53:45 +0000 In-Reply-To: <20211014195347.3635601-1-willmcvicker@google.com> Message-Id: <20211014195347.3635601-2-willmcvicker@google.com> Mime-Version: 1.0 References: <20211014195347.3635601-1-willmcvicker@google.com> X-Mailer: git-send-email 2.33.0.1079.g6e70778dc9-goog Subject: [PATCH v4 1/2] [RFT] clk: samsung: add support for CPU clocks From: Will McVicker To: Sylwester Nawrocki , Tomasz Figa , Chanwoo Choi , Michael Turquette , Stephen Boyd , Krzysztof Kozlowski Cc: kernel-team@android.com, Marek Szyprowski , Will McVicker , linux-samsung-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Adds 'struct samsung_cpu_clock' and corresponding CPU clock registration function to the samsung common clk driver. This allows samsung clock drivers to register their CPU clocks with the samsung_cmu_register_one() API. Currently the exynos5433 apollo and atlas clks have their own custom init functions to handle registering their CPU clocks. With this patch we can drop their custom CLK_OF_DECLARE functions and directly call samsung_cmu_register_one(). Signed-off-by: Will McVicker Tested-by: Marek Szyprowski Acked-by: Krzysztof Kozlowski Acked-by: Chanwoo Choi --- drivers/clk/samsung/clk-cpu.c | 18 ++++++++++++++++++ drivers/clk/samsung/clk.c | 2 ++ drivers/clk/samsung/clk.h | 26 ++++++++++++++++++++++++++ 3 files changed, 46 insertions(+) diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c index 00ef4d1b0888..7f20d9aedaa9 100644 --- a/drivers/clk/samsung/clk-cpu.c +++ b/drivers/clk/samsung/clk-cpu.c @@ -469,3 +469,21 @@ int __init exynos_register_cpu_clock(struct samsung_clk_provider *ctx, kfree(cpuclk); return ret; } + +void __init samsung_clk_register_cpu(struct samsung_clk_provider *ctx, + const struct samsung_cpu_clock *list, unsigned int nr_clk) +{ + unsigned int idx; + unsigned int num_cfgs; + struct clk_hw **hws = ctx->clk_data.hws; + + for (idx = 0; idx < nr_clk; idx++, list++) { + /* find count of configuration rates in cfg */ + for (num_cfgs = 0; list->cfg[num_cfgs].prate != 0; ) + num_cfgs++; + + exynos_register_cpu_clock(ctx, list->id, list->name, hws[list->parent_id], + hws[list->alt_parent_id], list->offset, list->cfg, num_cfgs, + list->flags); + } +} diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c index 1949ae7851b2..336243c6f120 100644 --- a/drivers/clk/samsung/clk.c +++ b/drivers/clk/samsung/clk.c @@ -378,6 +378,8 @@ struct samsung_clk_provider * __init samsung_cmu_register_one( samsung_clk_extended_sleep_init(reg_base, cmu->clk_regs, cmu->nr_clk_regs, cmu->suspend_regs, cmu->nr_suspend_regs); + if (cmu->cpu_clks) + samsung_clk_register_cpu(ctx, cmu->cpu_clks, cmu->nr_cpu_clks); samsung_clk_of_add_provider(np, ctx); diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h index c1e1a6b2f499..26499e97275b 100644 --- a/drivers/clk/samsung/clk.h +++ b/drivers/clk/samsung/clk.h @@ -271,6 +271,27 @@ struct samsung_pll_clock { __PLL(_typ, _id, _name, _pname, CLK_GET_RATE_NOCACHE, _lock, \ _con, _rtable) +struct samsung_cpu_clock { + unsigned int id; + const char *name; + unsigned int parent_id; + unsigned int alt_parent_id; + unsigned long flags; + int offset; + const struct exynos_cpuclk_cfg_data *cfg; +}; + +#define CPU_CLK(_id, _name, _pid, _apid, _flags, _offset, _cfg) \ + { \ + .id = _id, \ + .name = _name, \ + .parent_id = _pid, \ + .alt_parent_id = _apid, \ + .flags = _flags, \ + .offset = _offset, \ + .cfg = _cfg, \ + } + struct samsung_clock_reg_cache { struct list_head node; void __iomem *reg_base; @@ -301,6 +322,9 @@ struct samsung_cmu_info { unsigned int nr_fixed_factor_clks; /* total number of clocks with IDs assigned*/ unsigned int nr_clk_ids; + /* list of cpu clocks and respective count */ + const struct samsung_cpu_clock *cpu_clks; + unsigned int nr_cpu_clks; /* list and number of clocks registers */ const unsigned long *clk_regs; @@ -350,6 +374,8 @@ extern void __init samsung_clk_register_gate(struct samsung_clk_provider *ctx, extern void __init samsung_clk_register_pll(struct samsung_clk_provider *ctx, const struct samsung_pll_clock *pll_list, unsigned int nr_clk, void __iomem *base); +extern void samsung_clk_register_cpu(struct samsung_clk_provider *ctx, + const struct samsung_cpu_clock *list, unsigned int nr_clk); extern struct samsung_clk_provider __init *samsung_cmu_register_one( struct device_node *,