From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5D18B4AB1AD; Wed, 9 Sep 2026 22:05:20 +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=1788991522; cv=none; b=eV6KhkWJuvpZ2HKWMprEKunuG2LeurkJduyB+MEA6QIgNbkNKFikJe7pQYW90wQfcG9qUBQK1gKEvJBg1ckBgNFGFB46VnUCPr1k6mreQj4aCabHJ1eOgGXssGzr2aG6hlEwZtSwc3mkzAOuLfQbmPH3BJtbHoD5SmConcrw7vo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788991522; c=relaxed/simple; bh=OR9+1hsuKbRKn30pFMBe4EEVo2eTrp7YqHpCpE24iZ4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=SLF3qzAHVUu9zmiCvwSR3pIv2JdR+yroqK2nwG7ANd789KZrCNk0/rCkgmKiJjmsxdvLZ1eReBTRrKxvZ8GiHzunaFXSUugKrT96/FnEjzW4GqwcWKs6iYHu/phV74Fd+7vF+WnaDTzlbyHlSbvfvDgOHEKYUHPJegQEGsC4mF4= 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; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=pRVpLrvB; 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="pRVpLrvB" 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 22DA2169C; Wed, 9 Sep 2026 15:05:16 -0700 (PDT) Received: from oss-apollo7005.lab.cambridge.arm.com (oss-apollo7005.lab.cambridge.arm.com [10.7.15.171]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A53D03F7D8; Wed, 9 Sep 2026 15:05:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1788991519; bh=OR9+1hsuKbRKn30pFMBe4EEVo2eTrp7YqHpCpE24iZ4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pRVpLrvBP9BjA0mry/TfwCU2gz7cEV83i+RtpfdHpCUOG+n3qAl+DyS/ZlshdHf76 VHreVRsDoaG9ESb2yAfqYX4gAjAQ7lAwUc2RJm6gJr4jzTS7OcdsBWAW1/IhJSKt6J TCPja13n8+sdpTxcX9cs8BNDfCIuwo8qaEKq6YdQ= From: Philip Radford To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, arm-scmi@vger.kernel.org, linux-pm@vger.kernel.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, etienne.carriere@st.com, peng.fan@oss.nxp.com, michal.simek@amd.com, quic_sibis@quicinc.com, dan.carpenter@linaro.org, d-gole@ti.com, souvik.chakravarty@arm.com, philip.radford@arm.com Subject: [PATCH v9 13/13] powercap: arm_scmi: Synthetic zone enable/disable Date: Wed, 9 Sep 2026 22:04:37 +0000 Message-Id: <20260909220437.1254412-14-philip.radford@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260909220437.1254412-1-philip.radford@arm.com> References: <20260909220437.1254412-1-philip.radford@arm.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The synthetic instance root contols the same set of top-level SCMI domains already handled by the control-type enable/disable helpers previously introduced. Add synthetic zone enabled attribute to the existing per-instance helpers instead of duplicating the enable-state tracking and rollback logic. Signed-off-by: Philip Radford --- V8->V9 - Added mutex lock to instance_root_set_enable and instance_root_get_enable --- drivers/powercap/arm_scmi_powercap.c | 31 ++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/powercap/arm_scmi_powercap.c b/drivers/powercap/arm_scmi_powercap.c index aac0b00490b2..f42b1e8d228a 100644 --- a/drivers/powercap/arm_scmi_powercap.c +++ b/drivers/powercap/arm_scmi_powercap.c @@ -499,10 +499,41 @@ static int instance_root_get_constraint(struct powercap_zone *pz, int cid, u64 * return -EOPNOTSUPP; } +static int instance_root_set_enable(struct powercap_zone *pz, bool mode) +{ + struct scmi_powercap_root *pr = to_scmi_powercap_root(pz); + int ret; + + mutex_lock(&scmi_powercap_roots_lock); + ret = scmi_powercap_set_root_children_enable_state(pr, mode); + mutex_unlock(&scmi_powercap_roots_lock); + + return ret; +} + +static int instance_root_get_enable(struct powercap_zone *pz, bool *mode) +{ + struct scmi_powercap_root *pr = to_scmi_powercap_root(pz); + int ret; + + if (!mode) + return -EINVAL; + + mutex_lock(&scmi_powercap_roots_lock); + ret = scmi_powercap_read_root_children_enable_state(pr, mode); + if (!ret) + pr->enabled = *mode; + mutex_unlock(&scmi_powercap_roots_lock); + + return ret; +} + static const struct powercap_zone_ops instance_root_ops = { .get_max_power_range_uw = scmi_powercap_get_max_power_range_uw, .get_power_uw = instance_root_get_power_uw, .release = instance_root_release, + .set_enable = instance_root_set_enable, + .get_enable = instance_root_get_enable, }; static const struct powercap_zone_constraint_ops instance_root_const_ops = { -- 2.25.1