drivers/sh/pm_runtime.c

   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_ARCH_SHMOBILE_MULTI)) {
  38                 if (!of_machine_is_compatible("renesas,emev2") &&
  39                     !of_machine_is_compatible("renesas,r7s72100") &&
  40 #ifndef CONFIG_PM_GENERIC_DOMAINS_OF
  41                     !of_machine_is_compatible("renesas,r8a73a4") &&
  42                     !of_machine_is_compatible("renesas,r8a7740") &&
  43                     !of_machine_is_compatible("renesas,sh73a0") &&
  44 #endif
  45                     !of_machine_is_compatible("renesas,r8a7778") &&
  46                     !of_machine_is_compatible("renesas,r8a7779") &&
  47                     !of_machine_is_compatible("renesas,r8a7790") &&
  48                     !of_machine_is_compatible("renesas,r8a7791") &&
  49                     !of_machine_is_compatible("renesas,r8a7792") &&
  50                     !of_machine_is_compatible("renesas,r8a7793") &&
  51                     !of_machine_is_compatible("renesas,r8a7794"))
  52                         return 0;
  53         }
  54
  55         pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
  56         return 0;
  57 }
  58 core_initcall(sh_pm_runtime_init);