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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (c) 2019 Samsung Electronics Co., Ltd.
- * http://www.samsung.com/
- * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
- *
- * Samsung Exynos SoC Adaptive Supply Voltage support
- */
- #ifndef __LINUX_SOC_EXYNOS_ASV_H
- #define __LINUX_SOC_EXYNOS_ASV_H
- struct regmap;
- /* HPM, IDS values to select target group */
- struct asv_limit_entry {
- unsigned int hpm;
- unsigned int ids;
- };
- struct exynos_asv_table {
- unsigned int num_rows;
- unsigned int num_cols;
- u32 *buf;
- };
- struct exynos_asv_subsys {
- struct exynos_asv *asv;
- const char *cpu_dt_compat;
- int id;
- struct exynos_asv_table table;
- unsigned int base_volt;
- unsigned int offset_volt_h;
- unsigned int offset_volt_l;
- };
- struct exynos_asv {
- struct device *dev;
- struct regmap *chipid_regmap;
- struct exynos_asv_subsys subsys[2];
- int (*opp_get_voltage)(const struct exynos_asv_subsys *subs,
- int level, unsigned int voltage);
- unsigned int group;
- unsigned int table;
- /* True if SG fields from PKG_ID register should be used */
- bool use_sg;
- /* ASV bin read from DT */
- int of_bin;
- };
- static inline u32 __asv_get_table_entry(const struct exynos_asv_table *table,
- unsigned int row, unsigned int col)
- {
- return table->buf[row * (table->num_cols) + col];
- }
- static inline u32 exynos_asv_opp_get_voltage(const struct exynos_asv_subsys *subsys,
- unsigned int level, unsigned int group)
- {
- return __asv_get_table_entry(&subsys->table, level, group + 1);
- }
- static inline u32 exynos_asv_opp_get_frequency(const struct exynos_asv_subsys *subsys,
- unsigned int level)
- {
- return __asv_get_table_entry(&subsys->table, level, 0);
- }
- #endif /* __LINUX_SOC_EXYNOS_ASV_H */
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