From patchwork Sun Aug 15 10:30:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 12437183 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8514EC43214 for ; Sun, 15 Aug 2021 10:30:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B469610CC for ; Sun, 15 Aug 2021 10:30:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237279AbhHOKay (ORCPT ); Sun, 15 Aug 2021 06:30:54 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:23514 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S237260AbhHOKax (ORCPT ); Sun, 15 Aug 2021 06:30:53 -0400 X-IronPort-AV: E=Sophos;i="5.84,322,1620658800"; d="scan'208";a="90668544" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 15 Aug 2021 19:30:22 +0900 Received: from localhost.localdomain (unknown [10.226.92.6]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id DFA6B4006CD0; Sun, 15 Aug 2021 19:30:19 +0900 (JST) From: Biju Das To: Michael Turquette , Stephen Boyd Cc: Biju Das , Geert Uytterhoeven , Sergei Shtylyov , linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, Chris Paterson , Biju Das , Prabhakar Mahadev Lad Subject: [PATCH v3 1/4] clk: renesas: rzg2l: Add support to handle MUX clocks Date: Sun, 15 Aug 2021 11:30:11 +0100 Message-Id: <20210815103014.21208-2-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210815103014.21208-1-biju.das.jz@bp.renesas.com> References: <20210815103014.21208-1-biju.das.jz@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add support to handle mux clocks in order to select a clock source from multiple sources. Signed-off-by: Biju Das Reviewed-by: Lad Prabhakar Reviewed-by: Geert Uytterhoeven --- v2->v3: * Updated commit header drivers: clk: renesas: rzg2l-cpg with clk: renesas: rzg2l v1->v2: * Moved SEL_PLL_PACK macro to here * Fixed the commit message and extra blank line as pointed by Sergei * Added Geert's Rb tag v1: * New patch. --- drivers/clk/renesas/rzg2l-cpg.c | 23 +++++++++++++++++++++++ drivers/clk/renesas/rzg2l-cpg.h | 12 ++++++++++++ 2 files changed, 35 insertions(+) diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c index 3b3b2c3347f3..597efc2504eb 100644 --- a/drivers/clk/renesas/rzg2l-cpg.c +++ b/drivers/clk/renesas/rzg2l-cpg.c @@ -130,6 +130,26 @@ rzg2l_cpg_div_clk_register(const struct cpg_core_clk *core, return clk_hw->clk; } +static struct clk * __init +rzg2l_cpg_mux_clk_register(const struct cpg_core_clk *core, + void __iomem *base, + struct rzg2l_cpg_priv *priv) +{ + const struct clk_hw *clk_hw; + + clk_hw = devm_clk_hw_register_mux(priv->dev, core->name, + core->parent_names, core->num_parents, + core->flag, + base + GET_REG_OFFSET(core->conf), + GET_SHIFT(core->conf), + GET_WIDTH(core->conf), + core->mux_flags, &priv->rmw_lock); + if (IS_ERR(clk_hw)) + return ERR_CAST(clk_hw); + + return clk_hw->clk; +} + struct pll_clk { struct clk_hw hw; unsigned int conf; @@ -288,6 +308,9 @@ rzg2l_cpg_register_core_clk(const struct cpg_core_clk *core, clk = rzg2l_cpg_div_clk_register(core, priv->clks, priv->base, priv); break; + case CLK_TYPE_MUX: + clk = rzg2l_cpg_mux_clk_register(core, priv->base, priv); + break; default: goto fail; } diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h index 63695280ce8b..f538ffa3371c 100644 --- a/drivers/clk/renesas/rzg2l-cpg.h +++ b/drivers/clk/renesas/rzg2l-cpg.h @@ -24,6 +24,9 @@ #define DIVPL3A DDIV_PACK(CPG_PL3A_DDIV, 0, 3) #define DIVPL3B DDIV_PACK(CPG_PL3A_DDIV, 4, 3) +#define SEL_PLL_PACK(offset, bitpos, size) \ + (((offset) << 20) | ((bitpos) << 12) | ((size) << 8)) + /** * Definitions of CPG Core Clocks * @@ -43,6 +46,7 @@ struct cpg_core_clk { const struct clk_div_table *dtable; const char * const *parent_names; int flag; + int mux_flags; int num_parents; }; @@ -54,6 +58,9 @@ enum clk_types { /* Clock with divider */ CLK_TYPE_DIV, + + /* Clock with clock source selector */ + CLK_TYPE_MUX, }; #define DEF_TYPE(_name, _id, _type...) \ @@ -69,6 +76,11 @@ enum clk_types { #define DEF_DIV(_name, _id, _parent, _conf, _dtable, _flag) \ DEF_TYPE(_name, _id, CLK_TYPE_DIV, .conf = _conf, \ .parent = _parent, .dtable = _dtable, .flag = _flag) +#define DEF_MUX(_name, _id, _conf, _parent_names, _num_parents, _flag, \ + _mux_flags) \ + DEF_TYPE(_name, _id, CLK_TYPE_MUX, .conf = _conf, \ + .parent_names = _parent_names, .num_parents = _num_parents, \ + .flag = _flag, .mux_flags = _mux_flags) /** * struct rzg2l_mod_clk - Module Clocks definitions