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@@ -1,32 +0,0 @@ |
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/* See LICENSE file for copyright and license details. */ |
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#include "../util.h" |
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#if defined(__linux__) |
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#include <limits.h> |
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#define BRIGHTNESS_MAX "/sys/class/backlight/%s/max_brightness" |
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#define BRIGHTNESS_CUR "/sys/class/backlight/%s/brightness" |
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const char * |
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backlight_perc(const char *card) |
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{ |
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char path[PATH_MAX]; |
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int max, cur; |
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if (esnprintf(path, sizeof (path), BRIGHTNESS_MAX, card) < 0 || |
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pscanf(path, "%d", &max) != 1) { |
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return NULL; |
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} |
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if (esnprintf(path, sizeof (path), BRIGHTNESS_CUR, card) < 0 || |
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pscanf(path, "%d", &cur) != 1) { |
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return NULL; |
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} |
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if (max == 0) { |
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return NULL; |
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} |
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return bprintf("%d", cur * 100 / max); |
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} |
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#endif |