[PATCH 2/3] OMAP: PM: use omap_device API for suspend/resume
From: Kevin Hilman <hidden>
Date: 2010-06-23 23:37:03
Also in:
linux-omap
Subsystem:
arm port, omap power management support, omap2+ support, the rest · Maintainers:
Russell King, Kevin Hilman, Aaro Koskinen, Andreas Kemnade, Roger Quadros, Tony Lindgren, Linus Torvalds
Hook into the platform bus methods for suspend and resume and use the omap_device API to automatically idle and enable the device on suspend and resume. This allows device drivers to get rid of direct management of their clocks in their suspend/resume paths, and let omap_device do it for them. We currently use the _noirq (late suspend, early resume) versions of the suspend/resume methods to ensure that the device is not disabled too early for any drivers also using the _noirq methods. NOTE: only works for devices with omap_hwmod support. Signed-off-by: Kevin Hilman <redacted> --- arch/arm/mach-omap2/pm_bus.c | 61 ++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 61 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/pm_bus.c b/arch/arm/mach-omap2/pm_bus.c
index 69acaa5..3787da8 100644
--- a/arch/arm/mach-omap2/pm_bus.c
+++ b/arch/arm/mach-omap2/pm_bus.c@@ -70,3 +70,64 @@ int platform_pm_runtime_idle(struct device *dev) }; #endif /* CONFIG_PM_RUNTIME */ +#ifdef CONFIG_SUSPEND +int platform_pm_suspend_noirq(struct device *dev) +{ + struct device_driver *drv = dev->driver; + struct platform_device *pdev = to_platform_device(dev); + struct omap_device *odev = to_omap_device(pdev); + int ret = 0; + + if (!drv) + return 0; + + if (drv->pm) { + if (drv->pm->suspend_noirq) + ret = drv->pm->suspend_noirq(dev); + } + + if (omap_device_is_valid(odev)) { + if (odev->flags & OMAP_DEVICE_NO_BUS_SUSPEND) { + dev_dbg(dev, "no automatic bus-level system resume.\n"); + return 0; + } + + dev_dbg(dev, "%s\n", __func__); + omap_device_idle(pdev); + } else { + dev_dbg(dev, "not an omap_device\n"); + } + + return ret; +} + +int platform_pm_resume_noirq(struct device *dev) +{ + struct device_driver *drv = dev->driver; + struct platform_device *pdev = to_platform_device(dev); + struct omap_device *odev = to_omap_device(pdev); + int ret = 0; + + if (omap_device_is_valid(odev)) { + if (odev->flags & OMAP_DEVICE_NO_BUS_SUSPEND) { + dev_dbg(dev, "no automatic bus-level system resume.\n"); + return 0; + } + + dev_dbg(dev, "%s\n", __func__); + omap_device_enable(pdev); + } else { + dev_dbg(dev, "not an omap_device\n"); + } + + if (!drv) + return 0; + + if (drv->pm) { + if (drv->pm->resume_noirq) + ret = drv->pm->resume_noirq(dev); + } + + return ret; +} +#endif /* CONFIG_SUSPEND */
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1.7.0.2