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