| /* |
| * Runtime PM support code for OMAP1 |
| * |
| * 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 <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/io.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/platform_device.h> |
| #include <linux/mutex.h> |
| #include <linux/clk.h> |
| #include <linux/err.h> |
| |
| #include <plat/omap_device.h> |
| #include <plat/omap-pm.h> |
| |
| #ifdef CONFIG_PM_RUNTIME |
| static int omap1_pm_runtime_suspend(struct device *dev) |
| { |
| int ret; |
| |
| dev_dbg(dev, "%s\n", __func__); |
| |
| ret = pm_generic_runtime_suspend(dev); |
| if (ret) |
| return ret; |
| |
| ret = pm_runtime_clk_suspend(dev); |
| if (ret) { |
| pm_generic_runtime_resume(dev); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int omap1_pm_runtime_resume(struct device *dev) |
| { |
| dev_dbg(dev, "%s\n", __func__); |
| |
| pm_runtime_clk_resume(dev); |
| return pm_generic_runtime_resume(dev); |
| } |
| |
| static struct dev_power_domain default_power_domain = { |
| .ops = { |
| .runtime_suspend = omap1_pm_runtime_suspend, |
| .runtime_resume = omap1_pm_runtime_resume, |
| USE_PLATFORM_PM_SLEEP_OPS |
| }, |
| }; |
| |
| static struct pm_clk_notifier_block platform_bus_notifier = { |
| .pwr_domain = &default_power_domain, |
| .con_ids = { "ick", "fck", NULL, }, |
| }; |
| |
| static int __init omap1_pm_runtime_init(void) |
| { |
| if (!cpu_class_is_omap1()) |
| return -ENODEV; |
| |
| pm_runtime_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); |
| |
| return 0; |
| } |
| core_initcall(omap1_pm_runtime_init); |
| #endif /* CONFIG_PM_RUNTIME */ |