From patchwork Thu Apr 7 00:02:45 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 691511 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p3704rU8027612 for ; Thu, 7 Apr 2011 00:04:53 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755240Ab1DGAE3 (ORCPT ); Wed, 6 Apr 2011 20:04:29 -0400 Received: from na3sys009aog112.obsmtp.com ([74.125.149.207]:40783 "EHLO na3sys009aog112.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757134Ab1DGACs (ORCPT ); Wed, 6 Apr 2011 20:02:48 -0400 Received: from mail-yw0-f52.google.com ([209.85.213.52]) (using TLSv1) by na3sys009aob112.postini.com ([74.125.148.12]) with SMTP ID DSNKTZz/JvdqVjVFwK46Iuubws4DEPzaq+bf@postini.com; Wed, 06 Apr 2011 17:02:47 PDT Received: by ywa1 with SMTP id 1so957597ywa.39 for ; Wed, 06 Apr 2011 17:02:46 -0700 (PDT) Received: by 10.236.185.133 with SMTP id u5mr287232yhm.277.1302134565768; Wed, 06 Apr 2011 17:02:45 -0700 (PDT) Received: from localhost (c-24-18-179-55.hsd1.wa.comcast.net [24.18.179.55]) by mx.google.com with ESMTPS id u5sm464081yhn.51.2011.04.06.17.02.44 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 06 Apr 2011 17:02:45 -0700 (PDT) From: Kevin Hilman To: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-sh@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Magnus Damm , "Rafael J. Wysocki" , Grant Likely , Greg Kroah-Hartman , "Rafael J. Wysocki" Subject: [PATCH/RFC 2/6] OMAP2+: PM: move runtime PM implementation to use device power domains Date: Wed, 6 Apr 2011 17:02:45 -0700 Message-Id: <1302134569-22825-3-git-send-email-khilman@ti.com> X-Mailer: git-send-email 1.7.4 In-Reply-To: <1302134569-22825-1-git-send-email-khilman@ti.com> References: <1302134569-22825-1-git-send-email-khilman@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Thu, 07 Apr 2011 00:04:53 +0000 (UTC) In commit 7538e3db6e015e890825fbd9f8659952896ddd5b (PM: add support for device power domains) a better way for handling platform-specific power hooks was introduced. Rather than using the platform_bus dev_pm_ops overrides (platform_bus_set_pm_ops()), this patch moves the OMAP runtime PM implementation over to using device power domains. Since OMAP is the only user of platform_bus_set_pm_ops(), that interface can be removed (and will be in a forthcoming patch.) Cc: Grant Likely Cc: Magnus Damm Cc: Rafael J. Wysocki Signed-off-by: Kevin Hilman Reviewed-by: Grant Likely --- arch/arm/mach-omap2/Makefile | 6 +- arch/arm/mach-omap2/pm_bus.c | 85 -------------------------------------- arch/arm/plat-omap/omap_device.c | 22 ++++++++++ 3 files changed, 25 insertions(+), 88 deletions(-) delete mode 100644 arch/arm/mach-omap2/pm_bus.c diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index a45cd64..b353584 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -59,10 +59,10 @@ endif # Power Management ifeq ($(CONFIG_PM),y) obj-$(CONFIG_ARCH_OMAP2) += pm24xx.o -obj-$(CONFIG_ARCH_OMAP2) += sleep24xx.o pm_bus.o +obj-$(CONFIG_ARCH_OMAP2) += sleep24xx.o obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o \ - cpuidle34xx.o pm_bus.o -obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o pm_bus.o + cpuidle34xx.o +obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o obj-$(CONFIG_PM_DEBUG) += pm-debug.o obj-$(CONFIG_OMAP_SMARTREFLEX) += sr_device.o smartreflex.o obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3) += smartreflex-class3.o diff --git a/arch/arm/mach-omap2/pm_bus.c b/arch/arm/mach-omap2/pm_bus.c deleted file mode 100644 index 5acd2ab..0000000 --- a/arch/arm/mach-omap2/pm_bus.c +++ /dev/null @@ -1,85 +0,0 @@ -/* - * Runtime PM support code for OMAP - * - * Author: Kevin Hilman, Deep Root Systems, LLC - * - * Copyright (C) 2010 Texas Instruments, Inc. - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ -#include -#include -#include -#include -#include -#include - -#include -#include - -#ifdef CONFIG_PM_RUNTIME -static int omap_pm_runtime_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - int r, ret = 0; - - dev_dbg(dev, "%s\n", __func__); - - ret = pm_generic_runtime_suspend(dev); - - if (!ret && dev->parent == &omap_device_parent) { - r = omap_device_idle(pdev); - WARN_ON(r); - } - - return ret; -}; - -static int omap_pm_runtime_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - int r; - - dev_dbg(dev, "%s\n", __func__); - - if (dev->parent == &omap_device_parent) { - r = omap_device_enable(pdev); - WARN_ON(r); - } - - return pm_generic_runtime_resume(dev); -}; -#else -#define omap_pm_runtime_suspend NULL -#define omap_pm_runtime_resume NULL -#endif /* CONFIG_PM_RUNTIME */ - -static int __init omap_pm_runtime_init(void) -{ - const struct dev_pm_ops *pm; - struct dev_pm_ops *omap_pm; - - pm = platform_bus_get_pm_ops(); - if (!pm) { - pr_err("%s: unable to get dev_pm_ops from platform_bus\n", - __func__); - return -ENODEV; - } - - omap_pm = kmemdup(pm, sizeof(struct dev_pm_ops), GFP_KERNEL); - if (!omap_pm) { - pr_err("%s: unable to alloc memory for new dev_pm_ops\n", - __func__); - return -ENOMEM; - } - - omap_pm->runtime_suspend = omap_pm_runtime_suspend; - omap_pm->runtime_resume = omap_pm_runtime_resume; - - platform_bus_set_pm_ops(omap_pm); - - return 0; -} -core_initcall(omap_pm_runtime_init); diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c index 9bbda9a..93cd2fb 100644 --- a/arch/arm/plat-omap/omap_device.c +++ b/arch/arm/plat-omap/omap_device.c @@ -536,6 +536,27 @@ int omap_early_device_register(struct omap_device *od) return 0; } +static int _od_runtime_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + + return omap_device_idle(pdev); +} + +static int _od_runtime_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + + return omap_device_enable(pdev); +} + +static struct dev_power_domain omap_device_power_domain = { + .ops = { + .runtime_suspend = _od_runtime_suspend, + .runtime_resume = _od_runtime_resume, + } +}; + /** * omap_device_register - register an omap_device with one omap_hwmod * @od: struct omap_device * to register @@ -549,6 +570,7 @@ int omap_device_register(struct omap_device *od) pr_debug("omap_device: %s: registering\n", od->pdev.name); od->pdev.dev.parent = &omap_device_parent; + od->pdev.dev.pwr_domain = &omap_device_power_domain; return platform_device_register(&od->pdev); }