arch/arm/mach-shmobile/pm-r8a7790.c

   1 /*
   2  * r8a7790 Power management support
   3  *
   4  * Copyright (C) 2013  Renesas Electronics Corporation
   5  * Copyright (C) 2011  Renesas Solutions Corp.
   6  * Copyright (C) 2011  Magnus Damm
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <asm/io.h>
  15 #include <mach/pm-rcar.h>
  16 #include <mach/r8a7790.h>
  17
  18 /* SYSC */
  19 #define SYSCIER 0x0c
  20 #define SYSCIMR 0x10
  21
  22 #if defined(CONFIG_SMP)
  23
  24 static void __init r8a7790_sysc_init(void)
  25 {
  26         void __iomem *base = rcar_sysc_init(0xe6180000);
  27
  28         /* enable all interrupt sources, but do not use interrupt handler */
  29         iowrite32(0x0131000e, base + SYSCIER);
  30         iowrite32(0, base + SYSCIMR);
  31 }
  32
  33 #else /* CONFIG_SMP */
  34
  35 static inline void r8a7790_sysc_init(void) {}
  36
  37 #endif /* CONFIG_SMP */
  38
  39 void __init r8a7790_pm_init(void)
  40 {
  41         static int once;
  42
  43         if (!once++)
  44                 r8a7790_sysc_init();
  45 }