1 /*
2  * Runtime PM support code for DaVinci
3  *
4  * Author: Kevin Hilman
5  *
6  * Copyright (C) 2012 Texas Instruments, Inc.
7  *
8  * This file is licensed under the terms of the GNU General Public
9  * License version 2. This program is licensed "as is" without any
10  * warranty of any kind, whether express or implied.
11  */
12 #include <linux/init.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/pm_clock.h>
15 #include <linux/platform_device.h>
16 #include <linux/of.h>
17 
18 static struct dev_pm_domain davinci_pm_domain = {
19 	.ops = {
20 		USE_PM_CLK_RUNTIME_OPS
21 		USE_PLATFORM_PM_SLEEP_OPS
22 	},
23 };
24 
25 static struct pm_clk_notifier_block platform_bus_notifier = {
26 	.pm_domain = &davinci_pm_domain,
27 	.con_ids = { "fck", "master", "slave", NULL },
28 };
29 
davinci_pm_runtime_init(void)30 static int __init davinci_pm_runtime_init(void)
31 {
32 	if (of_have_populated_dt())
33 		return 0;
34 
35 	/* Use pm_clk as fallback if we're not using genpd. */
36 	pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
37 
38 	return 0;
39 }
40 core_initcall(davinci_pm_runtime_init);
41