From patchwork Mon Apr 15 16:36:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 13630327 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5704783CCC; Mon, 15 Apr 2024 16:37:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713199033; cv=none; b=SweqO6CyBbbow1LxAAUh5yroH0WwrP953Sp8sbho7D15yaLsmbhVsaNYn7YabkmTjyFm+RijaDAAF+TAkiqjYqtVPIiQuqkOpiBw7k+KN/TBuSVbVVJ59EpRjhemoiuRRiGWWRUuL+ftWqtsoq1/uAMcQNoaVyOjOjxzFxSMIPw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713199033; c=relaxed/simple; bh=cK+5PBqMFF+PgTRuERucVVmlIpa7o9q+w7QkvwbOkxg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=POkZ6+DQHFRMCmdMDUrnaIYI8HXQ5a6AszVKPdW4lhfR7NaF1H9UuwQmZN8R3D4bILtwSeAtUJiwnxzDrhBpXraDXa7jiDVBiio8dsH6f2zWX12s/Zx9XxFeMxM75om3IRzUZONusckAHbYVv4qDmEfJrLios89QAUAgvCAhQSM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com 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 593E3DA7; Mon, 15 Apr 2024 09:37:40 -0700 (PDT) Received: from pluto.fritz.box (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A184E3F64C; Mon, 15 Apr 2024 09:37:09 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.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, souvik.chakravarty@arm.com, mturquette@baylibre.com, sboyd@kernel.org, Cristian Marussi Subject: [PATCH v3 3/5] clk: scmi: Add support for rate change restricted clocks Date: Mon, 15 Apr 2024 17:36:47 +0100 Message-ID: <20240415163649.895268-4-cristian.marussi@arm.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240415163649.895268-1-cristian.marussi@arm.com> References: <20240415163649.895268-1-cristian.marussi@arm.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 --- v2 --> v3 - using SCMI_CLK_RATE_CTRL_SUPPORTED instead of _FORBIDDEN --- 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 e70708573965..ba234b56f742 100644 --- a/drivers/clk/clk-scmi.c +++ b/drivers/clk/clk-scmi.c @@ -20,6 +20,7 @@ enum scmi_clk_feats { SCMI_CLK_ATOMIC_SUPPORTED, SCMI_CLK_STATE_CTRL_SUPPORTED, + SCMI_CLK_RATE_CTRL_SUPPORTED, SCMI_CLK_FEATS_COUNT }; @@ -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_SUPPORTED)) + ops->set_rate = scmi_clk_set_rate; /* Parent ops */ ops->get_parent = scmi_clk_get_parent; @@ -302,6 +304,9 @@ scmi_clk_ops_select(struct scmi_clk *sclk, bool atomic_capable, if (!ci->state_ctrl_forbidden) feats_key |= BIT(SCMI_CLK_STATE_CTRL_SUPPORTED); + if (!ci->rate_ctrl_forbidden) + feats_key |= BIT(SCMI_CLK_RATE_CTRL_SUPPORTED); + if (WARN_ON(feats_key >= db_size)) return NULL;