From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f51.google.com (mail-pj1-f51.google.com [209.85.216.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A986C22068B for ; Mon, 2 Jun 2025 13:19:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.51 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748870394; cv=none; b=SVexnVQ6WfLGwciDhcRY0c8Eh580Cof12Ql++i3kWgWIxDJ83EPbVcsBji5cS0uvIGJkUUlue/hHBm2OkXcL8UhLdssyGEZYsZNJVKOdUUXdR1D5viQDXAuzV6wfyXmKM12cqNPk2AiF3sYGh3BUn7CM+5TVT6VKYk1jB4MWMPo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748870394; c=relaxed/simple; bh=GPsdVxlMIyFLjpYoGg3d0W6mL1zKPBYJinSVZjWHCvc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jR/STUcs8giaeQjnQgLUM6e6BGiCuvpZREKF3KectEdET9sjLTzhT6DXz8jeAEo3pRrUD3+BEOmavwwT2SP9SPQp0M35O05cP85oU4AFM4sT2KBz5yGdV/ccqdl1mpUkm2DBBwiJ93RvWJrK1IESUuoTlbjsfKiLelGoGI2NxR8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=iKBDSAeW; arc=none smtp.client-ip=209.85.216.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="iKBDSAeW" Received: by mail-pj1-f51.google.com with SMTP id 98e67ed59e1d1-310e1f4627aso4768025a91.2 for ; Mon, 02 Jun 2025 06:19:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1748870392; x=1749475192; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=YJ6sDs0ap5mby7PucN1jBOGKcXROdaugyvIe6KS1zRU=; b=iKBDSAeWgDn38v09kIHGSScXsRMUHORZDjWIeJ69BKs8MFoNGxC4aR6DZqo7K53hFE bPMcSJLSk3YvbffgXD8FkejZInppIp1LayDTlufuBzlo+1uSBFvsR+Mr2WABWbRcOdcq 3lXjsiqa/NYyysNyFK65RQjHl5shy5p179F4pBl7ruMZFBFdE1Xymc8XG4dPiALP1Tuk i3k09fBCbpEGvN1a1r4LS4Luh6xh23GcLhY0JqMEIb1+Rgv9DmRFzBmMx1GE8dy6qu50 PU9WXxKiPPW5MWjDLfeql2d4QL/xKJsUwvyIUFJXnF1jZ3WKDfmDa8mHx+ICoQ5jjN11 i3ZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748870392; x=1749475192; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=YJ6sDs0ap5mby7PucN1jBOGKcXROdaugyvIe6KS1zRU=; b=WCf2wYnH0FwzHZleoMidsjMrMBJGi28plxwI8XUdWl1FYlmiv2KwaHU013ioE0I027 Z5COxd65rslRKOovFbHfvAuBwx16mqPV9c6T3vNYNmeZJcSgR9Zl7rhoFMBZ1lMf5Im/ O0WVEtD+cItAwpaAKIDz3xXECgxEPR9LSxViKAKP929X9phN7D/Al5FqmEe1C+zdBrPH whV5+uw++OjaGFXvo8R+h5uI156ZmVTrOYN4VqhqUoSmWWejbGejkKKSU8H3sT1IIYxo zt++NxBso7OaVTRWkEjTZfgxm+gj2wAjvgMfZWjhiScZ19p3UexA2cmufDykXHdDjfgq fp3Q== X-Forwarded-Encrypted: i=1; AJvYcCVZd7gJkzQnXCScqrBxXQC1gzVd/h1VEABDSvpfmNldDvV7ppZAqEZNCdibbZJuWc9Bybg=@lists.linux.dev X-Gm-Message-State: AOJu0Yxkc0vBsy3uRkN614+CFKnVSeq51P4DUb6uF2SQG3DLAUWi2iKK WdzAdJeolr2H8tCy8IR7iJtivFk6ZzAaU5RKGvq5tHDUVC+6tWgqPRZG X-Gm-Gg: ASbGnctsYhMtT5W1H+7v1w1KK0KpB+hZg+ZGX9xrTEz9GAWnDzDsQTGfKuD8afE1o32 AJe57bP4UKm6aDQW/XDg1wEvYqMMCkK7WwAzb1CcS4aHg5W0y8RrtrAnofldf4fQDrXE3D8YaAK ItdYJgXag4qKrnJI43aSlu1hGOri+XO02kaY+UjjBy8V2erOFbXBPH28c2HgPl9X71iwVkrvbuC W2Qsq/Z+cL+jo/FMCoFMkNKYUAo6PLx0ilnogU2kOKgmtteeQf72E/QKsSGX1G2KkEQehoUFKV7 ceJLc+OWWFmo9M8LZZZAhLFMPganYLYFN/FNHz0Cfg6AWSlMhZyR/W6WC5wqDr/n8/mVfJ4vdrp UDP9GQz5x X-Google-Smtp-Source: AGHT+IErgHS5snsVnZ//qcUNKvfllIsynXPhb7js8d1BuZtiwj0gMVWZpcbDBi6UEa1UGSsp0FKEfg== X-Received: by 2002:a17:90b:268f:b0:311:a314:c2d9 with SMTP id 98e67ed59e1d1-31250357f1bmr19303166a91.9.1748870391611; Mon, 02 Jun 2025 06:19:51 -0700 (PDT) Received: from hiagof-nb.corp.toradex.com ([67.159.246.222]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3124e2b67bcsm6130983a91.8.2025.06.02.06.19.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Jun 2025 06:19:50 -0700 (PDT) From: Hiago De Franco To: Mathieu Poirier , Ulf Hansson , linux-pm@vger.kernel.org, linux-remoteproc@vger.kernel.org Cc: Shawn Guo , Sascha Hauer , Bjorn Andersson , Hiago De Franco , imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Peng Fan , daniel.baluta@nxp.com, iuliana.prodan@oss.nxp.com, "Rafael J . Wysocki" Subject: [PATCH v4 1/3] pmdomain: core: introduce dev_pm_genpd_is_on Date: Mon, 2 Jun 2025 10:19:03 -0300 Message-Id: <20250602131906.25751-2-hiagofranco@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250602131906.25751-1-hiagofranco@gmail.com> References: <20250602131906.25751-1-hiagofranco@gmail.com> Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Hiago De Franco This helper function returns the current power status of a given generic power domain. As example, remoteproc/imx_rproc.c can now use this function to check the power status of the remote core to properly set "attached" or "offline" modes. Suggested-by: Ulf Hansson Signed-off-by: Hiago De Franco --- v4: New patch. --- drivers/pmdomain/core.c | 27 +++++++++++++++++++++++++++ include/linux/pm_domain.h | 6 ++++++ 2 files changed, 33 insertions(+) diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c index ff5c7f2b69ce..bcb74d10960c 100644 --- a/drivers/pmdomain/core.c +++ b/drivers/pmdomain/core.c @@ -758,6 +758,33 @@ int dev_pm_genpd_rpm_always_on(struct device *dev, bool on) } EXPORT_SYMBOL_GPL(dev_pm_genpd_rpm_always_on); +/** + * dev_pm_genpd_is_on - Get device's power status + * + * @dev: Device to get the current power status + * + * This function checks whether the generic power domain is on or not by + * verifying if genpd_status_on equals GENPD_STATE_ON. + * + * Return: 'true' if the device's power domain is on, 'false' otherwise. + */ +bool dev_pm_genpd_is_on(struct device *dev) +{ + struct generic_pm_domain *genpd; + bool is_on; + + genpd = dev_to_genpd_safe(dev); + if (!genpd) + return false; + + genpd_lock(genpd); + is_on = genpd_status_on(genpd); + genpd_unlock(genpd); + + return is_on; +} +EXPORT_SYMBOL_GPL(dev_pm_genpd_is_on); + /** * pm_genpd_inc_rejected() - Adjust the rejected/usage counts for an idle-state. * diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 0b18160901a2..c12580b6579b 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -301,6 +301,7 @@ void dev_pm_genpd_synced_poweroff(struct device *dev); int dev_pm_genpd_set_hwmode(struct device *dev, bool enable); bool dev_pm_genpd_get_hwmode(struct device *dev); int dev_pm_genpd_rpm_always_on(struct device *dev, bool on); +bool dev_pm_genpd_is_on(struct device *dev); extern struct dev_power_governor simple_qos_governor; extern struct dev_power_governor pm_domain_always_on_gov; @@ -393,6 +394,11 @@ static inline int dev_pm_genpd_rpm_always_on(struct device *dev, bool on) return -EOPNOTSUPP; } +static inline bool dev_pm_genpd_is_on(struct device *dev) +{ + return false; +} + #define simple_qos_governor (*(struct dev_power_governor *)(NULL)) #define pm_domain_always_on_gov (*(struct dev_power_governor *)(NULL)) #endif -- 2.39.5