From patchwork Wed Dec 15 13:56:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Usyskin X-Patchwork-Id: 12678375 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 E47AFC433EF for ; Wed, 15 Dec 2021 13:58:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 378D410E67F; Wed, 15 Dec 2021 13:58:14 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9290C10E67F for ; Wed, 15 Dec 2021 13:58:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1639576692; x=1671112692; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KOvAyI/clUnKHpz08mNMF9FRKbp85u/Eo10Svqdh/M8=; b=eOOl8B0wOHF4zoxftDPXBLsklsNovQae0EuZGge1Bt4NLJ4eBLBwFn8M k1pP1Uy23ghf7YXblM1qs7gjTw6jdniFJr3ww/yp5k7MRXcNmni3AMT3O dG5BKuBmsIldd0kcYkP/A/cDVlvwfI/znfj+z0+zFRSpFI1l4uLA62jA5 qxYS3YlKXNZCYGFgBkfKzZV2sxQzj4yPeUJeo5YVNHrSoVR3PmOmE8fja Zjja0ijnH+elsUpiAxWSaBY6zUOufLLwCZIB3DHDy59KW+r1U7y2dVOl5 V/awuGAfMJFHcPd0DoUhh+qrE32DW3+TEe4iaSwCLQ+3xaM4q4lBBWnLA w==; X-IronPort-AV: E=McAfee;i="6200,9189,10198"; a="239450435" X-IronPort-AV: E=Sophos;i="5.88,207,1635231600"; d="scan'208";a="239450435" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Dec 2021 05:57:58 -0800 X-IronPort-AV: E=Sophos;i="5.88,207,1635231600"; d="scan'208";a="682502791" Received: from sannilnx.jer.intel.com ([10.12.231.79]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Dec 2021 05:57:55 -0800 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter Date: Wed, 15 Dec 2021 15:56:21 +0200 Message-Id: <20211215135622.1060229-5-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211215135622.1060229-1-alexander.usyskin@intel.com> References: <20211215135622.1060229-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 4/5] mei: gsc: add runtime pm handlers 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: linux-kernel@vger.kernel.org, Tomas Winkler , Alexander Usyskin , Vitaly Lubart , intel-gfx@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Tomas Winkler Implement runtime handlers for mei-gsc, to track idle state of the device properly. CC: Rodrigo Vivi Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin --- drivers/misc/mei/gsc-me.c | 80 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 79 insertions(+), 1 deletion(-) diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index c6bf869d910b..51b00e5ea122 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -167,7 +167,85 @@ static int __maybe_unused mei_gsc_pm_resume(struct device *device) return 0; } -static SIMPLE_DEV_PM_OPS(mei_gsc_pm_ops, mei_gsc_pm_suspend, mei_gsc_pm_resume); +static int __maybe_unused mei_gsc_pm_runtime_idle(struct device *device) +{ + struct mei_device *dev; + + dev_dbg(device, "rpm: me: runtime_idle\n"); + + dev = dev_get_drvdata(device); + if (!dev) + return -ENODEV; + if (mei_write_is_idle(dev)) + pm_runtime_autosuspend(device); + + return -EBUSY; +} + +static int __maybe_unused mei_gsc_pm_runtime_suspend(struct device *device) +{ + struct mei_device *dev; + struct mei_me_hw *hw; + int ret; + + dev_dbg(device, "rpm: me: runtime suspend\n"); + + dev = dev_get_drvdata(device); + if (!dev) + return -ENODEV; + + mutex_lock(&dev->device_lock); + + if (mei_write_is_idle(dev)) { + hw = to_me_hw(dev); + hw->pg_state = MEI_PG_ON; + ret = 0; + } else { + ret = -EAGAIN; + } + + mutex_unlock(&dev->device_lock); + + dev_dbg(device, "rpm: me: runtime suspend ret=%d\n", ret); + + return ret; +} + +static int __maybe_unused mei_gsc_pm_runtime_resume(struct device *device) +{ + struct mei_device *dev; + struct mei_me_hw *hw; + irqreturn_t irq_ret; + + dev_dbg(device, "rpm: me: runtime resume\n"); + + dev = dev_get_drvdata(device); + if (!dev) + return -ENODEV; + + mutex_lock(&dev->device_lock); + + hw = to_me_hw(dev); + hw->pg_state = MEI_PG_OFF; + + mutex_unlock(&dev->device_lock); + + irq_ret = mei_me_irq_thread_handler(1, dev); + if (irq_ret != IRQ_HANDLED) + dev_err(dev->dev, "thread handler fail %d\n", irq_ret); + + dev_dbg(device, "rpm: me: runtime resume ret = 0\n"); + + return 0; +} + +static const struct dev_pm_ops mei_gsc_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mei_gsc_pm_suspend, + mei_gsc_pm_resume) + SET_RUNTIME_PM_OPS(mei_gsc_pm_runtime_suspend, + mei_gsc_pm_runtime_resume, + mei_gsc_pm_runtime_idle) +}; static const struct platform_device_id gsc_devtypes[] = { {