| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Runtime PM support code |
| 3 | * |
| 4 | * Copyright (C) 2009-2010 Magnus Damm |
| 5 | * |
| 6 | * This file is subject to the terms and conditions of the GNU General Public |
| 7 | * License. See the file "COPYING" in the main directory of this archive |
| 8 | * for more details. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/io.h> |
| 14 | #include <linux/pm_runtime.h> |
| 15 | #include <linux/pm_domain.h> |
| 16 | #include <linux/pm_clock.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/clk.h> |
| 19 | #include <linux/sh_clk.h> |
| 20 | #include <linux/bitmap.h> |
| 21 | #include <linux/slab.h> |
| 22 | |
| 23 | static struct dev_pm_domain default_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_bus_notifier = { |
| 31 | .pm_domain = &default_pm_domain, |
| 32 | .con_ids = { NULL, }, |
| 33 | }; |
| 34 | |
| 35 | static int __init sh_pm_runtime_init(void) |
| 36 | { |
| 37 | if (IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_ARCH_SHMOBILE)) { |
| 38 | if (!of_find_compatible_node(NULL, NULL, |
| 39 | "renesas,cpg-mstp-clocks")) |
| 40 | return 0; |
| 41 | if (IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS_OF) && |
| 42 | of_find_node_with_property(NULL, "#power-domain-cells")) |
| 43 | return 0; |
| 44 | } |
| 45 | |
| 46 | pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); |
| 47 | return 0; |
| 48 | } |
| 49 | core_initcall(sh_pm_runtime_init); |