diff options
| author | Amit Sunil Dhamne <amitsd@google.com> | 2026-03-26 01:22:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-30 17:58:33 +0300 |
| commit | f23388d0f6523cc3a72edf6e78cb11931a07da10 (patch) | |
| tree | c148e9dfcd69f7c93578c808dcad065868f5328f | |
| parent | b422f7c072ac8d9b83c3d22e03709b92626ca88a (diff) | |
| download | linux-f23388d0f6523cc3a72edf6e78cb11931a07da10.tar.xz | |
lib/linear_ranges: Add linear_range_get_selector_high_array
Add a helper function to find the selector for a given value in a linear
range array. The selector should be such that the value it represents
should be higher or equal to the given value.
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20260325-max77759-charger-v9-4-4486dd297adc@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/linear_range.h | 3 | ||||
| -rw-r--r-- | lib/linear_ranges.c | 36 |
2 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/linear_range.h b/include/linux/linear_range.h index 2e4f4c3539c0..0f3037f1a94f 100644 --- a/include/linux/linear_range.h +++ b/include/linux/linear_range.h @@ -57,5 +57,8 @@ void linear_range_get_selector_within(const struct linear_range *r, int linear_range_get_selector_low_array(const struct linear_range *r, int ranges, unsigned int val, unsigned int *selector, bool *found); +int linear_range_get_selector_high_array(const struct linear_range *r, + int ranges, unsigned int val, + unsigned int *selector, bool *found); #endif diff --git a/lib/linear_ranges.c b/lib/linear_ranges.c index a1a7dfa881de..c85583678f6b 100644 --- a/lib/linear_ranges.c +++ b/lib/linear_ranges.c @@ -242,6 +242,42 @@ int linear_range_get_selector_high(const struct linear_range *r, EXPORT_SYMBOL_GPL(linear_range_get_selector_high); /** + * linear_range_get_selector_high_array - return linear range selector for value + * @r: pointer to array of linear ranges where selector is looked from + * @ranges: amount of ranges to scan from array + * @val: value for which the selector is searched + * @selector: address where found selector value is updated + * @found: flag to indicate that given value was in the range + * + * Scan array of ranges for selector for which range value matches given + * input value. Value is matching if it is equal or higher than given value + * If given value is found to be in a range scanning is stopped and @found is + * set true. If a range with values greater than given value is found + * but the range min is being greater than given value, then the range's + * lowest selector is updated to @selector and scanning is stopped. + * + * Return: 0 on success, -EINVAL if range array is invalid or does not contain + * range with a value greater or equal to given value + */ +int linear_range_get_selector_high_array(const struct linear_range *r, + int ranges, unsigned int val, + unsigned int *selector, bool *found) +{ + int i; + int ret; + + for (i = 0; i < ranges; i++) { + ret = linear_range_get_selector_high(&r[i], val, selector, + found); + if (!ret) + return 0; + } + + return -EINVAL; +} +EXPORT_SYMBOL_GPL(linear_range_get_selector_high_array); + +/** * linear_range_get_selector_within - return linear range selector for value * @r: pointer to linear range where selector is looked from * @val: value for which the selector is searched |