diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 88d3a1e920f..b48ca6039d8 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -49,14 +49,18 @@ obj-$(CONFIG_ARCH_OMAP2) += sdrc2xxx.o # Power Management ifeq ($(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_OMAP4) += pm44xx.o +obj-$(CONFIG_ARCH_OMAP2) += sleep24xx.o pm_bus.o +obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o cpuidle34xx.o pm_bus.o +obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o pm_bus.o obj-$(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 00000000000..784989f8f2f --- /dev/null +++ b/arch/arm/mach-omap2/pm_bus.c @@ -0,0 +1,85 @@ +/* + * 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 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; +}; + +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);