linux/arch/arm/mach-keystone/pm_domain.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * PM domain driver for Keystone2 devices
   4 *
   5 * Copyright 2013 Texas Instruments, Inc.
   6 *      Santosh Shilimkar <santosh.shillimkar@ti.com>
   7 *
   8 * Based on Kevins work on DAVINCI SOCs
   9 *      Kevin Hilman <khilman@linaro.org>
  10 */
  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#include "keystone.h"
  19
  20static struct dev_pm_domain keystone_pm_domain = {
  21        .ops = {
  22                USE_PM_CLK_RUNTIME_OPS
  23                USE_PLATFORM_PM_SLEEP_OPS
  24        },
  25};
  26
  27static struct pm_clk_notifier_block platform_domain_notifier = {
  28        .pm_domain = &keystone_pm_domain,
  29        .con_ids = { NULL },
  30};
  31
  32static const struct of_device_id of_keystone_table[] = {
  33        {.compatible = "ti,k2hk"},
  34        {.compatible = "ti,k2e"},
  35        {.compatible = "ti,k2l"},
  36        { /* end of list */ },
  37};
  38
  39int __init keystone_pm_runtime_init(void)
  40{
  41        struct device_node *np;
  42
  43        np = of_find_matching_node(NULL, of_keystone_table);
  44        if (!np)
  45                return 0;
  46
  47        pm_clk_add_notifier(&platform_bus_type, &platform_domain_notifier);
  48
  49        return 0;
  50}
  51