From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753309Ab2G2OMX (ORCPT ); Sun, 29 Jul 2012 10:12:23 -0400 Received: from ogre.sisk.pl ([193.178.161.156]:33628 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753265Ab2G2OMS (ORCPT ); Sun, 29 Jul 2012 10:12:18 -0400 From: "Rafael J. Wysocki" To: LKML Subject: [RFC][PATCH 6/6] sh: MTU2: Introduce clock events suspend/resume routines Date: Sun, 29 Jul 2012 16:17:35 +0200 User-Agent: KMail/1.13.6 (Linux/3.5.0+; KDE/4.6.0; x86_64; ; ) Cc: "Linux-sh list" , Linux PM list , Magnus Damm , Paul Mundt , Thomas Gleixner References: <201207291612.43138.rjw@sisk.pl> In-Reply-To: <201207291612.43138.rjw@sisk.pl> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201207291617.35447.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce suspend/resume routines for SH MTU2 clock event devices such that if those devices belong to a PM domain, the generic PM domains framework will be notified that the given domain may be turned off (during system suspend) or that it has to be turned on (during system resume). Signed-off-by: Rafael J. Wysocki --- drivers/clocksource/sh_mtu2.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) Index: linux/drivers/clocksource/sh_mtu2.c =================================================================== --- linux.orig/drivers/clocksource/sh_mtu2.c +++ linux/drivers/clocksource/sh_mtu2.c @@ -208,6 +208,16 @@ static void sh_mtu2_clock_event_mode(enu } } +static void sh_mtu2_clock_event_suspend(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweroff(&ced_to_sh_mtu2(ced)->pdev->dev); +} + +static void sh_mtu2_clock_event_resume(struct clock_event_device *ced) +{ + pm_genpd_syscore_poweron(&ced_to_sh_mtu2(ced)->pdev->dev); +} + static void sh_mtu2_register_clockevent(struct sh_mtu2_priv *p, char *name, unsigned long rating) { @@ -221,6 +231,8 @@ static void sh_mtu2_register_clockevent( ced->rating = rating; ced->cpumask = cpumask_of(0); ced->set_mode = sh_mtu2_clock_event_mode; + ced->suspend = sh_mtu2_clock_event_suspend; + ced->resume = sh_mtu2_clock_event_resume; dev_info(&p->pdev->dev, "used for clock events\n"); clockevents_register_device(ced); @@ -307,8 +319,12 @@ static int __devinit sh_mtu2_probe(struc struct sh_mtu2_priv *p = platform_get_drvdata(pdev); int ret; - if (!is_early_platform_device(pdev)) - pm_genpd_dev_always_on(&pdev->dev, true); + if (!is_early_platform_device(pdev)) { + struct sh_timer_config *cfg = pdev->dev.platform_data; + + if (cfg->clockevent_rating) + pm_genpd_dev_always_on(&pdev->dev, true); + } if (p) { dev_info(&pdev->dev, "kept as earlytimer\n");