| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 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 | |
| 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); |