drivers/soc/renesas/rcar-sysc.h

   1 /*
   2  * Renesas R-Car System Controller
   3  *
   4  * Copyright (C) 2016 Glider bvba
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  */
  10 #ifndef __SOC_RENESAS_RCAR_SYSC_H__
  11 #define __SOC_RENESAS_RCAR_SYSC_H__
  12
  13 #include <linux/types.h>
  14
  15
  16 /*
  17  * Power Domain flags
  18  */
  19 #define PD_CPU          BIT(0)  /* Area contains main CPU core */
  20 #define PD_SCU          BIT(1)  /* Area contains SCU and L2 cache */
  21 #define PD_NO_CR        BIT(2)  /* Area lacks PWR{ON,OFF}CR registers */
  22
  23 #define PD_CPU_CR       PD_CPU            /* CPU area has CR (R-Car H1) */
  24 #define PD_CPU_NOCR     PD_CPU | PD_NO_CR /* CPU area lacks CR (R-Car Gen2/3) */
  25 #define PD_ALWAYS_ON    PD_NO_CR          /* Always-on area */
  26
  27
  28 /*
  29  * Description of a Power Area
  30  */
  31
  32 struct rcar_sysc_area {
  33         const char *name;
  34         u16 chan_offs;          /* Offset of PWRSR register for this area */
  35         u8 chan_bit;            /* Bit in PWR* (except for PWRUP in PWRSR) */
  36         u8 isr_bit;             /* Bit in SYSCI*R */
  37         int parent;             /* -1 if none */
  38         unsigned int flags;     /* See PD_* */
  39 };
  40
  41
  42 /*
  43  * SoC-specific Power Area Description
  44  */
  45
  46 struct rcar_sysc_info {
  47         int (*init)(void);      /* Optional */
  48         const struct rcar_sysc_area *areas;
  49         unsigned int num_areas;
  50 };
  51
  52 extern const struct rcar_sysc_info r8a7743_sysc_info;
  53 extern const struct rcar_sysc_info r8a7745_sysc_info;
  54 extern const struct rcar_sysc_info r8a7779_sysc_info;
  55 extern const struct rcar_sysc_info r8a7790_sysc_info;
  56 extern const struct rcar_sysc_info r8a7791_sysc_info;
  57 extern const struct rcar_sysc_info r8a7792_sysc_info;
  58 extern const struct rcar_sysc_info r8a7794_sysc_info;
  59 extern const struct rcar_sysc_info r8a7795_sysc_info;
  60 extern const struct rcar_sysc_info r8a7796_sysc_info;
  61 extern const struct rcar_sysc_info r8a77970_sysc_info;
  62 extern const struct rcar_sysc_info r8a77995_sysc_info;
  63
  64
  65     /*
  66      * Helpers for fixing up power area tables depending on SoC revision
  67      */
  68
  69 extern void rcar_sysc_nullify(struct rcar_sysc_area *areas,
  70                               unsigned int num_areas, u8 id);
  71
  72 #endif /* __SOC_RENESAS_RCAR_SYSC_H__ */