From patchwork Tue Feb 27 19:48:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 13574372 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 EB301C54798 for ; Tue, 27 Feb 2024 19:49:33 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ABeBGQGJ26qcUgdPbTKtfgB5CYFoA8fwX6RAY51Gj3Q=; b=zZRPk4L15KuEWQ uFasmc+R+cDhpyvNqGCYu9XkaQ09hNAlGnPZTl36HAOKOEsfyJYuukj3JSHwVdHicxD4Wo40JWXaE pM7PCwnT6cRFd2FcsxiXlPV8tch1DCauMKP3SuipXC3UXW3ggUiFn/Ik0LMKEDT2QKkY5u20kNbji FIn5iZjCx2ViS3fP9YMJSyANINT3TocgczvVRd2msIQ+J8s3ifT63yFBzcnpcDoSwmk2ouVHw1zKp NSRYFB7Gy8EWtKrmsTHfD4VM0UfZ0c3LNS491MUU6YG58u+MDOlVGlDvGdsmb+5A8frr1igbkCtgi 9i46Dl3ZNk9jDOTABn1w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rf3S8-00000006gJB-1PzV; Tue, 27 Feb 2024 19:49:24 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rf3Rm-00000006g8A-3sAZ for linux-arm-kernel@lists.infradead.org; Tue, 27 Feb 2024 19:49:04 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6CDC8DA7; Tue, 27 Feb 2024 11:49:37 -0800 (PST) Received: from pluto.. (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 490503F762; Tue, 27 Feb 2024 11:48:56 -0800 (PST) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, peng.fan@oss.nxp.com, michal.simek@amd.com, quic_sibis@quicinc.com, quic_nkela@quicinc.com, mturquette@baylibre.com, sboyd@kernel.org, souvik.chakravarty@arm.com, Cristian Marussi , linux-clk@vger.kernel.org Subject: [PATCH 3/5] clk: scmi: Add support for rate change restricted clocks Date: Tue, 27 Feb 2024 19:48:10 +0000 Message-ID: <20240227194812.1209532-4-cristian.marussi@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240227194812.1209532-1-cristian.marussi@arm.com> References: <20240227194812.1209532-1-cristian.marussi@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240227_114903_054437_F0D58F96 X-CRM114-Status: GOOD ( 10.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Some exposed SCMI Clocks could be marked as non-supporting rate changes. Configure a clk_ops descriptors which does not provide the rate change callbacks for such clocks when registering with CLK framework. CC: Michael Turquette CC: Stephen Boyd CC: linux-clk@vger.kernel.org Signed-off-by: Cristian Marussi --- drivers/clk/clk-scmi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c index fc9603988d91..d20dcc60f9d1 100644 --- a/drivers/clk/clk-scmi.c +++ b/drivers/clk/clk-scmi.c @@ -19,6 +19,7 @@ enum scmi_clk_feats { SCMI_CLK_ATOMIC_SUPPORTED, SCMI_CLK_STATE_CTRL_FORBIDDEN, + SCMI_CLK_RATE_CTRL_FORBIDDEN, SCMI_CLK_MAX_FEATS }; @@ -248,7 +249,8 @@ scmi_clk_ops_alloc(struct device *dev, unsigned long feats_key) ops->recalc_rate = scmi_clk_recalc_rate; ops->round_rate = scmi_clk_round_rate; ops->determine_rate = scmi_clk_determine_rate; - ops->set_rate = scmi_clk_set_rate; + if (!(feats_key & BIT(SCMI_CLK_RATE_CTRL_FORBIDDEN))) + ops->set_rate = scmi_clk_set_rate; /* Parent ops */ ops->get_parent = scmi_clk_get_parent; @@ -296,6 +298,9 @@ scmi_clk_ops_select(struct scmi_clk *sclk, bool atomic_capable, if (ci->state_ctrl_forbidden) feats_key |= BIT(SCMI_CLK_STATE_CTRL_FORBIDDEN); + if (ci->rate_ctrl_forbidden) + feats_key |= BIT(SCMI_CLK_RATE_CTRL_FORBIDDEN); + /* Lookup previously allocated ops */ ops = clk_ops_db[feats_key]; if (!ops) {