From patchwork Thu May 27 21:13:17 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 102779 X-Patchwork-Delegate: khilman@deeprootsystems.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o4RLDQxl006865 for ; Thu, 27 May 2010 21:13:27 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757502Ab0E0VNZ (ORCPT ); Thu, 27 May 2010 17:13:25 -0400 Received: from mail-px0-f174.google.com ([209.85.212.174]:44665 "EHLO mail-px0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757094Ab0E0VNZ (ORCPT ); Thu, 27 May 2010 17:13:25 -0400 Received: by pxi18 with SMTP id 18so219680pxi.19 for ; Thu, 27 May 2010 14:13:24 -0700 (PDT) Received: by 10.142.6.35 with SMTP id 35mr7307957wff.79.1274994804671; Thu, 27 May 2010 14:13:24 -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 21sm1260403pzk.4.2010.05.27.14.13.23 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 27 May 2010 14:13:24 -0700 (PDT) From: Kevin Hilman To: linux-omap@vger.kernel.org Subject: [PATCH 2/4] OMAP: PM: initial runtime PM core support Date: Thu, 27 May 2010 14:13:17 -0700 Message-Id: <1274994799-30297-3-git-send-email-khilman@deeprootsystems.com> X-Mailer: git-send-email 1.7.0.2 In-Reply-To: <1274994799-30297-1-git-send-email-khilman@deeprootsystems.com> References: <1274994799-30297-1-git-send-email-khilman@deeprootsystems.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-4.2.3 (demeter.kernel.org [140.211.167.41]); Thu, 27 May 2010 21:13:27 +0000 (UTC) diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 4b9fc57..58a0474 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -46,12 +46,17 @@ obj-$(CONFIG_ARCH_OMAP2) += sdrc2xxx.o ifeq ($(CONFIG_PM),y) obj-$(CONFIG_ARCH_OMAP2) += pm24xx.o obj-$(CONFIG_ARCH_OMAP2) += sleep24xx.o -obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o cpuidle34xx.o +obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o cpuidle34xx.o \ + pm_bus.o obj-$(CONFIG_PM_DEBUG) += pm-debug.o AFLAGS_sleep24xx.o :=-Wa,-march=armv6 AFLAGS_sleep34xx.o :=-Wa,-march=armv7-a +ifeq ($(CONFIG_PM_VERBOSE),y) +CFLAGS_pm_bus.o += -DDEBUG +endif + endif # PRCM diff --git a/arch/arm/mach-omap2/pm_bus.c b/arch/arm/mach-omap2/pm_bus.c new file mode 100644 index 0000000..69acaa5 --- /dev/null +++ b/arch/arm/mach-omap2/pm_bus.c @@ -0,0 +1,72 @@ +/* + * 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 +int platform_pm_runtime_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct omap_device *odev = to_omap_device(pdev); + int r, ret = 0; + + dev_dbg(dev, "%s\n", __func__); + + if (dev->driver->pm && dev->driver->pm->runtime_suspend) + ret = dev->driver->pm->runtime_suspend(dev); + if (!ret && omap_device_is_valid(odev)) { + r = omap_device_idle(pdev); + WARN_ON(r); + } + + return ret; +}; + +int platform_pm_runtime_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct omap_device *odev = to_omap_device(pdev); + int r, ret = 0; + + dev_dbg(dev, "%s\n", __func__); + + if (omap_device_is_valid(odev)) { + r = omap_device_enable(pdev); + WARN_ON(r); + } + + if (dev->driver->pm && dev->driver->pm->runtime_resume) + ret = dev->driver->pm->runtime_resume(dev); + + return ret; +}; + +int platform_pm_runtime_idle(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct omap_device *odev = to_omap_device(pdev); + int ret; + + ret = pm_runtime_suspend(dev); + dev_dbg(dev, "%s [%d]\n", __func__, ret); + + return 0; +}; +#endif /* CONFIG_PM_RUNTIME */ +