From patchwork Tue Jan 23 09:58:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13527117 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 2E2ECC47DDB for ; Tue, 23 Jan 2024 10:15:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C170410E762; Tue, 23 Jan 2024 10:15:39 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6A14410E74A; Tue, 23 Jan 2024 10:15:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706004938; x=1737540938; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VsAKzQTjWrB/fdWeMlJRwIxVXlZHOl6RR8fK5n41VXE=; b=dPoIB39aRzOu39mIlIa5Am2Q10srf496okDqwzSI8znPIv9bufon4qMB kDazjQkEG7lZWZGLyq+GAyieM74NyT76GN/cmkKn34HEDx4krgpTdZjY1 t561/gTlXsqdbsxpEC58s/OcP80tuGhfMUoYY9jYQpNaVS8KNz6nJ2GaL 19YHn+9LOiKXIhEtk8gQTHltdDyhvA28W0KIxGEKvpEHGBwncytU/rB6p RfS/PVYr7qIdDkeIDzRDpd0Set1jh2Ec9FzHh2cfA6fsS/DEvW82VKiiF NdZHeE2EcM5aX3gcRix0XhTtnSbqXlOkUBAJbRc0nfvf+RRiCEtISWS9T w==; X-IronPort-AV: E=McAfee;i="6600,9927,10961"; a="14828947" X-IronPort-AV: E=Sophos;i="6.05,214,1701158400"; d="scan'208";a="14828947" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2024 02:15:37 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10961"; a="1117206787" X-IronPort-AV: E=Sophos;i="6.05,214,1701158400"; d="scan'208";a="1117206787" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2024 02:15:31 -0800 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id 3795611FC49; Tue, 23 Jan 2024 11:58:24 +0200 (EET) From: Sakari Ailus To: linux-pm@vger.kernel.org Subject: [PATCH v4 2/3] pm: runtime: Make pm_runtime_get_if_conditional() private Date: Tue, 23 Jan 2024 11:58:23 +0200 Message-Id: <20240123095823.97346-1-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240123095642.97303-1-sakari.ailus@linux.intel.com> References: <20240123095642.97303-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org, "Rafael J. Wysocki" , intel-gfx@lists.freedesktop.org, laurent.pinchart@ideasonboard.com, Daniel Vetter , Rodrigo Vivi , Andy Shevchenko , David Airlie Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Stop offering pm_runtime_get_if_conditional() API function for drivers, instead require them to use pm_runtime_get_if_{active,in_use}. Also convert the only user, the i915 driver, to use the said functions. Signed-off-by: Sakari Ailus --- drivers/base/power/runtime.c | 34 ++++++++++++++++++++-- drivers/gpu/drm/i915/intel_runtime_pm.c | 5 +++- include/linux/pm_runtime.h | 38 ++----------------------- 3 files changed, 38 insertions(+), 39 deletions(-) diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 83e0cd2a19e7..d2c17e29567d 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -1197,7 +1197,7 @@ EXPORT_SYMBOL_GPL(__pm_runtime_resume); * The caller is responsible for decrementing the runtime PM usage counter of * @dev after this function has returned a positive value for it. */ -int pm_runtime_get_conditional(struct device *dev, bool ign_usage_count) +static int pm_runtime_get_conditional(struct device *dev, bool ign_usage_count) { unsigned long flags; int retval; @@ -1218,7 +1218,37 @@ int pm_runtime_get_conditional(struct device *dev, bool ign_usage_count) return retval; } -EXPORT_SYMBOL_GPL(pm_runtime_get_conditional); + +/** + * pm_runtime_get_if_active - Bump up runtime PM usage counter if the device is + * in active state + * @dev: Target device. + * + * Increment the runtime PM usage counter of @dev if its runtime PM status is + * %RPM_ACTIVE, in which case it returns 1. If the device is in a different + * state, 0 is returned. -EINVAL is returned if runtime PM is disabled for the + * device. + */ +int pm_runtime_get_if_active(struct device *dev) +{ + return pm_runtime_get_conditional(dev, true); +} +EXPORT_SYMBOL_GPL(pm_runtime_get_if_active); + +/** + * pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter. + * @dev: Target device. + * + * Increment the runtime PM usage counter of @dev if its runtime PM status is + * %RPM_ACTIVE and its runtime PM usage counter is greater than 0, in which case + * it returns 1. If the device is in a different state or its usage_count is 0, + * 0 is returned. -EINVAL is returned if runtime PM is disabled for the device. + */ +int pm_runtime_get_if_in_use(struct device *dev) +{ + return pm_runtime_get_conditional(dev, false); +} +EXPORT_SYMBOL_GPL(pm_runtime_get_if_in_use); /** * __pm_runtime_set_status - Set runtime PM status of a device. diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index b5f8abd2a22b..d4e844128826 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -246,7 +246,10 @@ static intel_wakeref_t __intel_runtime_pm_get_if_active(struct intel_runtime_pm * function, since the power state is undefined. This applies * atm to the late/early system suspend/resume handlers. */ - if (pm_runtime_get_conditional(rpm->kdev, ignore_usecount) <= 0) + if ((ignore_usecount && + pm_runtime_get_if_active(rpm->kdev) <= 0) || + (!ignore_usecount && + pm_runtime_get_if_in_use(rpm->kdev) <= 0)) return 0; } diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index a212b3008ade..436baa167498 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -72,8 +72,8 @@ extern int pm_runtime_force_resume(struct device *dev); extern int __pm_runtime_idle(struct device *dev, int rpmflags); extern int __pm_runtime_suspend(struct device *dev, int rpmflags); extern int __pm_runtime_resume(struct device *dev, int rpmflags); -extern int pm_runtime_get_conditional(struct device *dev, - bool ign_usage_count); +extern int pm_runtime_get_if_active(struct device *dev); +extern int pm_runtime_get_if_in_use(struct device *dev); extern int pm_schedule_suspend(struct device *dev, unsigned int delay); extern int __pm_runtime_set_status(struct device *dev, unsigned int status); extern int pm_runtime_barrier(struct device *dev); @@ -95,35 +95,6 @@ extern void pm_runtime_release_supplier(struct device_link *link); extern int devm_pm_runtime_enable(struct device *dev); -/** - * pm_runtime_get_if_active - Bump up runtime PM usage counter if the device is - * in active state - * @dev: Target device. - * - * Increment the runtime PM usage counter of @dev if its runtime PM status is - * %RPM_ACTIVE, in which case it returns 1. If the device is in a different - * state, 0 is returned. -EINVAL is returned if runtime PM is disabled for the - * device. - */ -static inline int pm_runtime_get_if_active(struct device *dev) -{ - return pm_runtime_get_conditional(dev, true); -} - -/** - * pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter. - * @dev: Target device. - * - * Increment the runtime PM usage counter of @dev if its runtime PM status is - * %RPM_ACTIVE and its runtime PM usage counter is greater than 0, in which case - * it returns 1. If the device is in a different state or its usage_count is 0, - * 0 is returned. -EINVAL is returned if runtime PM is disabled for the device. - */ -static inline int pm_runtime_get_if_in_use(struct device *dev) -{ - return pm_runtime_get_conditional(dev, false); -} - /** * pm_suspend_ignore_children - Set runtime PM behavior regarding children. * @dev: Target device. @@ -297,11 +268,6 @@ static inline int pm_runtime_get_if_active(struct device *dev) { return -EINVAL; } -static inline int pm_runtime_get_conditional(struct device *dev, - bool ign_usage_count) -{ - return -EINVAL; -} static inline int __pm_runtime_set_status(struct device *dev, unsigned int status) { return 0; } static inline int pm_runtime_barrier(struct device *dev) { return 0; }