drivers/soc/renesas/rcar-sysc.h

   1 /* SPDX-License-Identifier: GPL-2.0
   2  *
   3  * Renesas R-Car System Controller
   4  *
   5  * Copyright (C) 2016 Glider bvba
   6  */
   7 #ifndef __SOC_RENESAS_RCAR_SYSC_H__
   8 #define __SOC_RENESAS_RCAR_SYSC_H__
   9
  10 #include <linux/types.h>
  11
  12
  13 /*
  14  * Power Domain flags
  15  */
  16 #define PD_CPU          BIT(0)  /* Area contains main CPU core */
  17 #define PD_SCU          BIT(1)  /* Area contains SCU and L2 cache */
  18 #define PD_NO_CR        BIT(2)  /* Area lacks PWR{ON,OFF}CR registers */
  19
  20 #define PD_CPU_CR       PD_CPU            /* CPU area has CR (R-Car H1) */
  21 #define PD_CPU_NOCR     PD_CPU | PD_NO_CR /* CPU area lacks CR (R-Car Gen2/3) */
  22 #define PD_ALWAYS_ON    PD_NO_CR          /* Always-on area */
  23
  24
  25 /*
  26  * Description of a Power Area
  27  */
  28
  29 struct rcar_sysc_area {
  30         const char *name;
  31         u16 chan_offs;          /* Offset of PWRSR register for this area */
  32         u8 chan_bit;            /* Bit in PWR* (except for PWRUP in PWRSR) */
  33         u8 isr_bit;             /* Bit in SYSCI*R */
  34         int parent;             /* -1 if none */
  35         unsigned int flags;     /* See PD_* */
  36 };
  37
  38
  39 /*
  40  * SoC-specific Power Area Description
  41  */
  42
  43 struct rcar_sysc_info {
  44         int (*init)(void);      /* Optional */
  45         const struct rcar_sysc_area *areas;
  46         unsigned int num_areas;
  47         /* Optional External Request Mask Register */
  48         u32 extmask_offs;       /* SYSCEXTMASK register offset */
  49         u32 extmask_val;        /* SYSCEXTMASK register mask value */
  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 r8a77470_sysc_info;
  55 extern const struct rcar_sysc_info r8a774a1_sysc_info;
  56 extern const struct rcar_sysc_info r8a774b1_sysc_info;
  57 extern const struct rcar_sysc_info r8a774c0_sysc_info;
  58 extern const struct rcar_sysc_info r8a7779_sysc_info;
  59 extern const struct rcar_sysc_info r8a7790_sysc_info;
  60 extern const struct rcar_sysc_info r8a7791_sysc_info;
  61 extern const struct rcar_sysc_info r8a7792_sysc_info;
  62 extern const struct rcar_sysc_info r8a7794_sysc_info;
  63 extern struct rcar_sysc_info r8a7795_sysc_info;
  64 extern const struct rcar_sysc_info r8a77960_sysc_info;
  65 extern const struct rcar_sysc_info r8a77961_sysc_info;
  66 extern const struct rcar_sysc_info r8a77965_sysc_info;
  67 extern const struct rcar_sysc_info r8a77970_sysc_info;
  68 extern const struct rcar_sysc_info r8a77980_sysc_info;
  69 extern const struct rcar_sysc_info r8a77990_sysc_info;
  70 extern const struct rcar_sysc_info r8a77995_sysc_info;
  71
  72
  73     /*
  74      * Helpers for fixing up power area tables depending on SoC revision
  75      */
  76
  77 extern void rcar_sysc_nullify(struct rcar_sysc_area *areas,
  78                               unsigned int num_areas, u8 id);
  79
  80 #endif /* __SOC_RENESAS_RCAR_SYSC_H__ */