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100 lines
2.4 KiB
100 lines
2.4 KiB
/* |
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* Runtime PM support code |
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* |
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* Copyright (C) 2009-2010 Magnus Damm |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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*/ |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/io.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/pm_domain.h> |
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#include <linux/pm_clock.h> |
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#include <linux/platform_device.h> |
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#include <linux/clk.h> |
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#include <linux/sh_clk.h> |
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#include <linux/bitmap.h> |
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#include <linux/slab.h> |
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#ifdef CONFIG_PM_RUNTIME |
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static int sh_pm_runtime_suspend(struct device *dev) |
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{ |
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int ret; |
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ret = pm_generic_runtime_suspend(dev); |
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if (ret) { |
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dev_err(dev, "failed to suspend device\n"); |
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return ret; |
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} |
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ret = pm_clk_suspend(dev); |
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if (ret) { |
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dev_err(dev, "failed to suspend clock\n"); |
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pm_generic_runtime_resume(dev); |
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return ret; |
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} |
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return 0; |
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} |
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static int sh_pm_runtime_resume(struct device *dev) |
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{ |
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int ret; |
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ret = pm_clk_resume(dev); |
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if (ret) { |
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dev_err(dev, "failed to resume clock\n"); |
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return ret; |
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} |
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return pm_generic_runtime_resume(dev); |
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} |
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static struct dev_pm_domain default_pm_domain = { |
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.ops = { |
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.runtime_suspend = sh_pm_runtime_suspend, |
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.runtime_resume = sh_pm_runtime_resume, |
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USE_PLATFORM_PM_SLEEP_OPS |
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}, |
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}; |
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#define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain) |
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#else |
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#define DEFAULT_PM_DOMAIN_PTR NULL |
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#endif /* CONFIG_PM_RUNTIME */ |
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static struct pm_clk_notifier_block platform_bus_notifier = { |
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.pm_domain = DEFAULT_PM_DOMAIN_PTR, |
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.con_ids = { NULL, }, |
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}; |
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static int __init sh_pm_runtime_init(void) |
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{ |
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if (IS_ENABLED(CONFIG_ARCH_SHMOBILE_MULTI)) { |
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if (!of_machine_is_compatible("renesas,emev2") && |
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!of_machine_is_compatible("renesas,r7s72100") && |
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!of_machine_is_compatible("renesas,r8a73a4") && |
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!of_machine_is_compatible("renesas,r8a7740") && |
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!of_machine_is_compatible("renesas,r8a7778") && |
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!of_machine_is_compatible("renesas,r8a7779") && |
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!of_machine_is_compatible("renesas,r8a7790") && |
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!of_machine_is_compatible("renesas,r8a7791") && |
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!of_machine_is_compatible("renesas,r8a7792") && |
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!of_machine_is_compatible("renesas,r8a7793") && |
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!of_machine_is_compatible("renesas,r8a7794") && |
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!of_machine_is_compatible("renesas,sh7372") && |
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!of_machine_is_compatible("renesas,sh73a0")) |
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return 0; |
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} |
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pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); |
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return 0; |
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} |
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core_initcall(sh_pm_runtime_init);
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