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
29struct 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	s8 parent;		/* -1 if none */
35	u8 flags;		/* See PD_* */
36};
37
38
39/*
40 * SoC-specific Power Area Description
41 */
42
43struct 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
52extern const struct rcar_sysc_info r8a7742_sysc_info;
53extern const struct rcar_sysc_info r8a7743_sysc_info;
54extern const struct rcar_sysc_info r8a7745_sysc_info;
55extern const struct rcar_sysc_info r8a77470_sysc_info;
56extern const struct rcar_sysc_info r8a774a1_sysc_info;
57extern const struct rcar_sysc_info r8a774b1_sysc_info;
58extern const struct rcar_sysc_info r8a774c0_sysc_info;
59extern const struct rcar_sysc_info r8a774e1_sysc_info;
60extern const struct rcar_sysc_info r8a7779_sysc_info;
61extern const struct rcar_sysc_info r8a7790_sysc_info;
62extern const struct rcar_sysc_info r8a7791_sysc_info;
63extern const struct rcar_sysc_info r8a7792_sysc_info;
64extern const struct rcar_sysc_info r8a7794_sysc_info;
65extern struct rcar_sysc_info r8a7795_sysc_info;
66extern const struct rcar_sysc_info r8a77960_sysc_info;
67extern const struct rcar_sysc_info r8a77961_sysc_info;
68extern const struct rcar_sysc_info r8a77965_sysc_info;
69extern const struct rcar_sysc_info r8a77970_sysc_info;
70extern const struct rcar_sysc_info r8a77980_sysc_info;
71extern const struct rcar_sysc_info r8a77990_sysc_info;
72extern const struct rcar_sysc_info r8a77995_sysc_info;
73
74
75    /*
76     * Helpers for fixing up power area tables depending on SoC revision
77     */
78
79extern void rcar_sysc_nullify(struct rcar_sysc_area *areas,
80			      unsigned int num_areas, u8 id);
81
82#endif /* __SOC_RENESAS_RCAR_SYSC_H__ */