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