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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright (c) 2019 Samsung Electronics Co., Ltd.4 * http://www.samsung.com/5 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>6 *7 * Samsung Exynos SoC Adaptive Supply Voltage support8 */9#ifndef __LINUX_SOC_EXYNOS_ASV_H10#define __LINUX_SOC_EXYNOS_ASV_H11 12struct regmap;13 14/* HPM, IDS values to select target group */15struct asv_limit_entry {16 unsigned int hpm;17 unsigned int ids;18};19 20struct exynos_asv_table {21 unsigned int num_rows;22 unsigned int num_cols;23 u32 *buf;24};25 26struct exynos_asv_subsys {27 struct exynos_asv *asv;28 const char *cpu_dt_compat;29 int id;30 struct exynos_asv_table table;31 32 unsigned int base_volt;33 unsigned int offset_volt_h;34 unsigned int offset_volt_l;35};36 37struct exynos_asv {38 struct device *dev;39 struct regmap *chipid_regmap;40 struct exynos_asv_subsys subsys[2];41 42 int (*opp_get_voltage)(const struct exynos_asv_subsys *subs,43 int level, unsigned int voltage);44 unsigned int group;45 unsigned int table;46 47 /* True if SG fields from PKG_ID register should be used */48 bool use_sg;49 /* ASV bin read from DT */50 int of_bin;51};52 53static inline u32 __asv_get_table_entry(const struct exynos_asv_table *table,54 unsigned int row, unsigned int col)55{56 return table->buf[row * (table->num_cols) + col];57}58 59static inline u32 exynos_asv_opp_get_voltage(const struct exynos_asv_subsys *subsys,60 unsigned int level, unsigned int group)61{62 return __asv_get_table_entry(&subsys->table, level, group + 1);63}64 65static inline u32 exynos_asv_opp_get_frequency(const struct exynos_asv_subsys *subsys,66 unsigned int level)67{68 return __asv_get_table_entry(&subsys->table, level, 0);69}70 71int exynos_asv_init(struct device *dev, struct regmap *regmap);72 73#endif /* __LINUX_SOC_EXYNOS_ASV_H */74