| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Copyright (C) 2020 ROHM Semiconductors */ |
| |
| #ifndef LINEAR_RANGE_H |
| #define LINEAR_RANGE_H |
| |
| #include <linux/types.h> |
| |
| /** |
| * struct linear_range - table of selector - value pairs |
| * |
| * Define a lookup-table for range of values. Intended to help when looking |
| * for a register value matching certaing physical measure (like voltage). |
| * Usable when increment of one in register always results a constant increment |
| * of the physical measure (like voltage). |
| * |
| * @min: Lowest value in range |
| * @min_sel: Lowest selector for range |
| * @max_sel: Highest selector for range |
| * @step: Value step size |
| */ |
| struct linear_range { |
| unsigned int min; |
| unsigned int min_sel; |
| unsigned int max_sel; |
| unsigned int step; |
| }; |
| |
| unsigned int linear_range_values_in_range(const struct linear_range *r); |
| unsigned int linear_range_values_in_range_array(const struct linear_range *r, |
| int ranges); |
| unsigned int linear_range_get_max_value(const struct linear_range *r); |
| |
| int linear_range_get_value(const struct linear_range *r, unsigned int selector, |
| unsigned int *val); |
| int linear_range_get_value_array(const struct linear_range *r, int ranges, |
| unsigned int selector, unsigned int *val); |
| int linear_range_get_selector_low(const struct linear_range *r, |
| unsigned int val, unsigned int *selector, |
| bool *found); |
| int linear_range_get_selector_high(const struct linear_range *r, |
| unsigned int val, unsigned int *selector, |
| bool *found); |
| int linear_range_get_selector_low_array(const struct linear_range *r, |
| int ranges, unsigned int val, |
| unsigned int *selector, bool *found); |
| |
| #endif |