LXR linux/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_BUSY         BIT(3)  /* Busy, for internal use only */
  24
  25#define PD_CPU_CR       PD_CPU            /* CPU area has CR (R-Car H1) */
  26#define PD_CPU_NOCR     PD_CPU | PD_NO_CR /* CPU area lacks CR (R-Car Gen2/3) */
  27#define PD_ALWAYS_ON    PD_NO_CR          /* Always-on area */
  28
  29
  30/*
  31 * Description of a Power Area
  32 */
  33
  34struct rcar_sysc_area {
  35        const char *name;
  36        u16 chan_offs;          /* Offset of PWRSR register for this area */
  37        u8 chan_bit;            /* Bit in PWR* (except for PWRUP in PWRSR) */
  38        u8 isr_bit;             /* Bit in SYSCI*R */
  39        int parent;             /* -1 if none */
  40        unsigned int flags;     /* See PD_* */
  41};
  42
  43
  44/*
  45 * SoC-specific Power Area Description
  46 */
  47
  48struct rcar_sysc_info {
  49        int (*init)(void);      /* Optional */
  50        const struct rcar_sysc_area *areas;
  51        unsigned int num_areas;
  52};
  53
  54extern const struct rcar_sysc_info r8a7743_sysc_info;
  55extern const struct rcar_sysc_info r8a7745_sysc_info;
  56extern const struct rcar_sysc_info r8a7779_sysc_info;
  57extern const struct rcar_sysc_info r8a7790_sysc_info;
  58extern const struct rcar_sysc_info r8a7791_sysc_info;
  59extern const struct rcar_sysc_info r8a7792_sysc_info;
  60extern const struct rcar_sysc_info r8a7794_sysc_info;
  61extern const struct rcar_sysc_info r8a7795_sysc_info;
  62extern const struct rcar_sysc_info r8a7796_sysc_info;
  63
  64
  65    /*
  66     * Helpers for fixing up power area tables depending on SoC revision
  67     */
  68
  69extern void rcar_sysc_nullify(struct rcar_sysc_area *areas,
  70                              unsigned int num_areas, u8 id);
  71
  72#endif /* __SOC_RENESAS_RCAR_SYSC_H__ */
  73