1 /*
2 * PM domain driver for Keystone2 devices
3 *
4 * Copyright 2013 Texas Instruments, Inc.
5 * Santosh Shilimkar <santosh.shillimkar@ti.com>
6 *
7 * Based on Kevins work on DAVINCI SOCs
8 * Kevin Hilman <khilman@linaro.org>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms and conditions of the GNU General Public License,
12 * version 2, as published by the Free Software Foundation.
13 */
14
15 #include <linux/init.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/pm_clock.h>
18 #include <linux/platform_device.h>
19 #include <linux/of.h>
20
21 #include "keystone.h"
22
23 static struct dev_pm_domain keystone_pm_domain = {
24 .ops = {
25 USE_PM_CLK_RUNTIME_OPS
26 USE_PLATFORM_PM_SLEEP_OPS
27 },
28 };
29
30 static struct pm_clk_notifier_block platform_domain_notifier = {
31 .pm_domain = &keystone_pm_domain,
32 .con_ids = { NULL },
33 };
34
35 static const struct of_device_id of_keystone_table[] = {
36 {.compatible = "ti,k2hk"},
37 {.compatible = "ti,k2e"},
38 {.compatible = "ti,k2l"},
39 { /* end of list */ },
40 };
41
keystone_pm_runtime_init(void)42 int __init keystone_pm_runtime_init(void)
43 {
44 struct device_node *np;
45
46 np = of_find_matching_node(NULL, of_keystone_table);
47 if (!np)
48 return 0;
49
50 pm_clk_add_notifier(&platform_bus_type, &platform_domain_notifier);
51
52 return 0;
53 }
54
