xref: /linux/arch/arm/mach-davinci/pm_domain.c (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Runtime PM support code for DaVinci
4  *
5  * Author: Kevin Hilman
6  *
7  * Copyright (C) 2012 Texas Instruments, Inc.
8  */
9 #include <linux/init.h>
10 #include <linux/pm_runtime.h>
11 #include <linux/pm_clock.h>
12 #include <linux/platform_device.h>
13 #include <linux/of.h>
14 
15 static struct dev_pm_domain davinci_pm_domain = {
16 	.ops = {
17 		USE_PM_CLK_RUNTIME_OPS
18 		USE_PLATFORM_PM_SLEEP_OPS
19 	},
20 };
21 
22 static struct pm_clk_notifier_block platform_bus_notifier = {
23 	.pm_domain = &davinci_pm_domain,
24 	.con_ids = { "fck", "master", "slave", NULL },
25 };
26 
davinci_pm_runtime_init(void)27 static int __init davinci_pm_runtime_init(void)
28 {
29 	if (of_have_populated_dt())
30 		return 0;
31 
32 	/* Use pm_clk as fallback if we're not using genpd. */
33 	pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
34 
35 	return 0;
36 }
37 core_initcall(davinci_pm_runtime_init);
38