exynos-pmu.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
 4 *		http://www.samsung.com
 5 *
 6 * Header for Exynos PMU Driver support
 7 */
 8
 9#ifndef __EXYNOS_PMU_H
10#define __EXYNOS_PMU_H
11
12#include <linux/io.h>
13
14#define PMU_TABLE_END	(-1U)
15
16struct regmap_access_table;
17
18struct exynos_pmu_conf {
19	unsigned int offset;
20	u8 val[NUM_SYS_POWERDOWN];
21};
22
23/**
24 * struct exynos_pmu_data - of_device_id (match) data
25 *
26 * @pmu_config: Optional table detailing register writes for target system
27 *              states: SYS_AFTR, SYS_LPA, SYS_SLEEP.
28 * @pmu_config_extra: Optional secondary table detailing additional register
29 *                    writes for target system states: SYS_AFTR, SYS_LPA,
30 *                    SYS_SLEEP.
31 * @pmu_secure: Whether or not PMU register writes need to be done via SMC call.
32 * @pmu_cpuhp: Whether or not extra handling is required for CPU hotplug and
33 *             CPUidle outside of standard PSCI calls, due to non-compliant
34 *             firmware.
35 * @pmu_init: Optional init function.
36 * @powerdown_conf: Optional callback before entering target system states:
37 *                  SYS_AFTR, SYS_LPA, SYS_SLEEP. This will be invoked before
38 *                  the registers from @pmu_config are written.
39 * @powerdown_conf_extra: Optional secondary callback before entering
40 *                        target system states: SYS_AFTR, SYS_LPA, SYS_SLEEP.
41 *                        This will be invoked after @pmu_config registers have
42 *                        been written.
43 * @rd_table: A table of readable register ranges in case a custom regmap is
44 *            used (i.e. when @pmu_secure is @true).
45 * @wr_table: A table of writable register ranges in case a custom regmap is
46 *            used (i.e. when @pmu_secure is @true).
47 */
48struct exynos_pmu_data {
49	const struct exynos_pmu_conf *pmu_config;
50	const struct exynos_pmu_conf *pmu_config_extra;
51	bool pmu_secure;
52	bool pmu_cpuhp;
53
54	void (*pmu_init)(void);
55	void (*powerdown_conf)(enum sys_powerdown);
56	void (*powerdown_conf_extra)(enum sys_powerdown);
57
58	const struct regmap_access_table *rd_table;
59	const struct regmap_access_table *wr_table;
60};
61
62extern void __iomem *pmu_base_addr;
63
64#ifdef CONFIG_EXYNOS_PMU_ARM_DRIVERS
65/* list of all exported SoC specific data */
66extern const struct exynos_pmu_data exynos3250_pmu_data;
67extern const struct exynos_pmu_data exynos4210_pmu_data;
68extern const struct exynos_pmu_data exynos4212_pmu_data;
69extern const struct exynos_pmu_data exynos4412_pmu_data;
70extern const struct exynos_pmu_data exynos5250_pmu_data;
71extern const struct exynos_pmu_data exynos5420_pmu_data;
72#endif
73extern const struct exynos_pmu_data gs101_pmu_data;
74
75extern void pmu_raw_writel(u32 val, u32 offset);
76extern u32 pmu_raw_readl(u32 offset);
77
78int tensor_sec_reg_write(void *context, unsigned int reg, unsigned int val);
79int tensor_sec_reg_read(void *context, unsigned int reg, unsigned int *val);
80int tensor_sec_update_bits(void *context, unsigned int reg, unsigned int mask,
81			   unsigned int val);
82
83#endif /* __EXYNOS_PMU_H */