projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d2218d4e MV |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* Copyright (C) 2020 ROHM Semiconductors */ | |
| 3 | ||
| 4 | #ifndef LINEAR_RANGE_H | |
| 5 | #define LINEAR_RANGE_H | |
| 6 | ||
| 7 | #include <linux/types.h> | |
| 8 | ||
| 9 | /** | |
| 10 | * struct linear_range - table of selector - value pairs | |
| 11 | * | |
| 12 | * Define a lookup-table for range of values. Intended to help when looking | |
| 13 | * for a register value matching certaing physical measure (like voltage). | |
| 14 | * Usable when increment of one in register always results a constant increment | |
| 15 | * of the physical measure (like voltage). | |
| 16 | * | |
| 17 | * @min: Lowest value in range | |
| 18 | * @min_sel: Lowest selector for range | |
| 19 | * @max_sel: Highest selector for range | |
| 20 | * @step: Value step size | |
| 21 | */ | |
| 22 | struct linear_range { | |
| 23 | unsigned int min; | |
| 24 | unsigned int min_sel; | |
| 25 | unsigned int max_sel; | |
| 26 | unsigned int step; | |
| 27 | }; | |
| 28 | ||
| 29 | unsigned int linear_range_values_in_range(const struct linear_range *r); | |
| 30 | unsigned int linear_range_values_in_range_array(const struct linear_range *r, | |
| 31 | int ranges); | |
| 32 | unsigned int linear_range_get_max_value(const struct linear_range *r); | |
| 33 | ||
| 34 | int linear_range_get_value(const struct linear_range *r, unsigned int selector, | |
| 35 | unsigned int *val); | |
| 36 | int linear_range_get_value_array(const struct linear_range *r, int ranges, | |
| 37 | unsigned int selector, unsigned int *val); | |
| 38 | int linear_range_get_selector_low(const struct linear_range *r, | |
| 39 | unsigned int val, unsigned int *selector, | |
| 40 | bool *found); | |
| 41 | int linear_range_get_selector_high(const struct linear_range *r, | |
| 42 | unsigned int val, unsigned int *selector, | |
| 43 | bool *found); | |
| 44 | int linear_range_get_selector_low_array(const struct linear_range *r, | |
| 45 | int ranges, unsigned int val, | |
| 46 | unsigned int *selector, bool *found); | |
| 47 | ||
| 48 | #endif |