1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (c) 2019 Samsung Electronics Co., Ltd.
4*4882a593Smuzhiyun * http://www.samsung.com/
5*4882a593Smuzhiyun * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Samsung Exynos SoC Adaptive Supply Voltage support
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun #ifndef __LINUX_SOC_EXYNOS_ASV_H
10*4882a593Smuzhiyun #define __LINUX_SOC_EXYNOS_ASV_H
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun struct regmap;
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun /* HPM, IDS values to select target group */
15*4882a593Smuzhiyun struct asv_limit_entry {
16*4882a593Smuzhiyun unsigned int hpm;
17*4882a593Smuzhiyun unsigned int ids;
18*4882a593Smuzhiyun };
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun struct exynos_asv_table {
21*4882a593Smuzhiyun unsigned int num_rows;
22*4882a593Smuzhiyun unsigned int num_cols;
23*4882a593Smuzhiyun u32 *buf;
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun struct exynos_asv_subsys {
27*4882a593Smuzhiyun struct exynos_asv *asv;
28*4882a593Smuzhiyun const char *cpu_dt_compat;
29*4882a593Smuzhiyun int id;
30*4882a593Smuzhiyun struct exynos_asv_table table;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun unsigned int base_volt;
33*4882a593Smuzhiyun unsigned int offset_volt_h;
34*4882a593Smuzhiyun unsigned int offset_volt_l;
35*4882a593Smuzhiyun };
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun struct exynos_asv {
38*4882a593Smuzhiyun struct device *dev;
39*4882a593Smuzhiyun struct regmap *chipid_regmap;
40*4882a593Smuzhiyun struct exynos_asv_subsys subsys[2];
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun int (*opp_get_voltage)(const struct exynos_asv_subsys *subs,
43*4882a593Smuzhiyun int level, unsigned int voltage);
44*4882a593Smuzhiyun unsigned int group;
45*4882a593Smuzhiyun unsigned int table;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun /* True if SG fields from PKG_ID register should be used */
48*4882a593Smuzhiyun bool use_sg;
49*4882a593Smuzhiyun /* ASV bin read from DT */
50*4882a593Smuzhiyun int of_bin;
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun
__asv_get_table_entry(const struct exynos_asv_table * table,unsigned int row,unsigned int col)53*4882a593Smuzhiyun static inline u32 __asv_get_table_entry(const struct exynos_asv_table *table,
54*4882a593Smuzhiyun unsigned int row, unsigned int col)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun return table->buf[row * (table->num_cols) + col];
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
exynos_asv_opp_get_voltage(const struct exynos_asv_subsys * subsys,unsigned int level,unsigned int group)59*4882a593Smuzhiyun static inline u32 exynos_asv_opp_get_voltage(const struct exynos_asv_subsys *subsys,
60*4882a593Smuzhiyun unsigned int level, unsigned int group)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun return __asv_get_table_entry(&subsys->table, level, group + 1);
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
exynos_asv_opp_get_frequency(const struct exynos_asv_subsys * subsys,unsigned int level)65*4882a593Smuzhiyun static inline u32 exynos_asv_opp_get_frequency(const struct exynos_asv_subsys *subsys,
66*4882a593Smuzhiyun unsigned int level)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun return __asv_get_table_entry(&subsys->table, level, 0);
69*4882a593Smuzhiyun }
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun #endif /* __LINUX_SOC_EXYNOS_ASV_H */
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