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 1C84F3E3D86; Wed, 17 Jun 2026 10:00:02 +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=1781690404; cv=none; b=KXjj3egYxk6CKerEcoxjdGU9s9N8+iJFyiuq7oyDAAm2d7KuHSgXwNMhv6JdYGNAs5NXEejJymYPU0MOTJbMxaf/cR+VP4DCC4foEt33FRZPSWOr1gkI/UiHn1QWI6uL8ZnCLFd2F6QPbQ54LoKzNzmo7cr/UQTV6qDsRqezUEc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781690404; c=relaxed/simple; bh=ysAvUv+uQKD7SvxfHb5LUEwIT9/VWVtRXW6Ysv0mpjY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=X+i65xNS5fVbt5oIQKK1ThTllELejPTKMaqpXUDesFuM9Z3VKoWTCQFc0VJOoOTQlGXCBgr6/6Rdk7kcjnLa0Uuka/ogOoa4IKYrCNXYFbp2bnZrZM6GpZS8yDJ1gYHVadpbB6YYXerW76qOikdQj79XgX1hERSZdTNB6Y4XmUQ= 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=XBaCmaZH; 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="XBaCmaZH" 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 B7C1B2E8E; Wed, 17 Jun 2026 02:59:57 -0700 (PDT) Received: from donnerap.manchester.arm.com (donnerap.manchester.arm.com [10.33.8.81]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1511E3F915; Wed, 17 Jun 2026 02:59:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1781690402; bh=ysAvUv+uQKD7SvxfHb5LUEwIT9/VWVtRXW6Ysv0mpjY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XBaCmaZHYV/1Vq+XaHmiTF7v+sLjlJed8tDn3PmgDLPVjLmboaRsxR3PdwzgOgoxJ 18r1ZNOu5Yh1oALXt7Kwxd2kpwFzKm9F+2VH0iOkNYkDUMJlP704J2jwHaZV/XROXk I3H6rYvqa6I8YXINDWyKIvx9ydyrqp0x1gxmAOS4= 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 Subject: [PATCH v7 13/13] powercap: arm_scmi: Synthetic zone enable/disable Date: Wed, 17 Jun 2026 10:59:10 +0100 Message-ID: <20260617095910.1963578-14-philip.radford@arm.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260617095910.1963578-1-philip.radford@arm.com> References: <20260617095910.1963578-1-philip.radford@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@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 --- V6->V7 - Re-factored due to new control-type enable disable patch at the beginning of the series - Prevent instance_root_get_enable() reporting a stale state V5->V6 - Added use of to_scmi_powercap_root macro - Changed instance_root_set_)enable_state to bail out on any error - Changed logic in instance_root_get_enable to not check child states --- drivers/powercap/arm_scmi_powercap.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/powercap/arm_scmi_powercap.c b/drivers/powercap/arm_scmi_powercap.c index e1bad4b19990..23708f9934d4 100644 --- a/drivers/powercap/arm_scmi_powercap.c +++ b/drivers/powercap/arm_scmi_powercap.c @@ -458,10 +458,34 @@ 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); + + return scmi_powercap_set_root_children_enable_state(pr, mode); +} + +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; + + ret = scmi_powercap_read_root_children_enable_state(pr, mode); + if (!ret) + pr->enabled = *mode; + + 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 = { -- 2.47.3