From patchwork Wed Feb 16 19:54:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Usyskin X-Patchwork-Id: 12748978 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 B119BC4332F for ; Wed, 16 Feb 2022 19:56:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BBEC28966C; Wed, 16 Feb 2022 19:56:03 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id DEE268966C for ; Wed, 16 Feb 2022 19:56:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1645041361; x=1676577361; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=P8BlhZbbKSW0u8zU1+WHMTLMMoH7M9zxF+ms+aQCQOc=; b=UGSEwH2oUOjf18mQLwRckpUvlR0CIrCXaQ478EL43nfGhoG3RYe3OdDy aU00s1q/XtB+cktAPBEAWpaGWAcS83OWag+GBzZt7TNA1R45Vnfjp8D2D 42NVYUJmgry2LrUCWmGCpG6aH8zt2pvxXUc/IvmpiP2rcS8SbWEzMSle1 sSkfz+D+Qz4Jv4uUxlk2I7ryXQRK0nlazWg2NMcJR5tRIIRQeHi8l87Pb ScIsEyQpK3SoJAgH6X1f+IzjLH9qUtIJ5mSOWnT4xMSQKsuTz/hasPclT UyawGDGwbusK6aUqOY/DYSBbBLGRd4hUKmMY9XDZBBo1osPEeYRQ5NJrY Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10260"; a="249544647" X-IronPort-AV: E=Sophos;i="5.88,374,1635231600"; d="scan'208";a="249544647" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2022 11:55:40 -0800 X-IronPort-AV: E=Sophos;i="5.88,374,1635231600"; d="scan'208";a="545140464" Received: from sannilnx.jer.intel.com ([10.12.231.79]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2022 11:55:37 -0800 From: Alexander Usyskin To: Greg Kroah-Hartman , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Tvrtko Ursulin Date: Wed, 16 Feb 2022 21:54:58 +0200 Message-Id: <20220216195459.3918414-5-alexander.usyskin@intel.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220216195459.3918414-1-alexander.usyskin@intel.com> References: <20220216195459.3918414-1-alexander.usyskin@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v8 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 --- V4: drop debug prints V5: Rebase V6: Rebase V7: add Greg KH Reviewed-by V8: Rebase --- drivers/misc/mei/gsc-me.c | 67 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 66 insertions(+), 1 deletion(-) diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c index cf427f6fdec9..dac482ddab51 100644 --- a/drivers/misc/mei/gsc-me.c +++ b/drivers/misc/mei/gsc-me.c @@ -152,7 +152,72 @@ 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_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 = dev_get_drvdata(device); + struct mei_me_hw *hw; + int ret; + + 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); + + return ret; +} + +static int __maybe_unused mei_gsc_pm_runtime_resume(struct device *device) +{ + struct mei_device *dev = dev_get_drvdata(device); + struct mei_me_hw *hw; + irqreturn_t irq_ret; + + 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); + + 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 auxiliary_device_id mei_gsc_id_table[] = { {