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	slstatus-backlight-4bd78c9.diff (2788B)
	---
	1 diff --git a/Makefile b/Makefile
	2 index 3be46cc..93dc2c5 100644
	3 --- a/Makefile
	4 +++ b/Makefile
	5 @@ -6,6 +6,7 @@ include config.mk
	6
	7 REQ = util
	8 COM =\
	9 + components/backlight\
	10 components/battery\
	11 components/cpu\
	12 components/datetime\
	13 diff --git a/components/backlight.c b/components/backlight.c
	14 new file mode 100644
	15 index 0000000..74f4c08
	16 --- /dev/null
	17 +++ b/components/backlight.c
	18 @@ -0,0 +1,59 @@
	19 +/* See LICENSE file for copyright and license details. */
	20 +
	21 +#include <stddef.h>
	22 +
	23 +#include "../util.h"
	24 +
	25 +#if defined(__linux__)
	26 + #include <limits.h>
	27 +
	28 + #define BRIGHTNESS_MAX "/sys/class/backlight/%s/max_brightness"
	29 + #define BRIGHTNESS_CUR "/sys/class/backlight/%s/brightness"
	30 +
	31 + const char *
	32 + backlight_perc(const char *card)
	33 + {
	34 + char path[PATH_MAX];
	35 + int max, cur;
	36 +
	37 + if (esnprintf(path, sizeof (path), BRIGHTNESS_MAX, card…
	38 + pscanf(path, "%d", &max) != 1) {
	39 + return NULL;
	40 + }
	41 +
	42 + if (esnprintf(path, sizeof (path), BRIGHTNESS_CUR, card…
	43 + pscanf(path, "%d", &cur) != 1) {
	44 + return NULL;
	45 + }
	46 +
	47 + if (max == 0) {
	48 + return NULL;
	49 + }
	50 +
	51 + return bprintf("%d%%", cur * 100 / max);
	52 + }
	53 +#elif defined(__OpenBSD__)
	54 + #include <fcntl.h>
	55 + #include <sys/ioctl.h>
	56 + #include <sys/time.h>
	57 + #include <dev/wscons/wsconsio.h>
	58 +
	59 + const char *
	60 + backlight_perc(const char *unused)
	61 + {
	62 + int fd, err;
	63 + struct wsdisplay_param wsd_param = {
	64 + .param = WSDISPLAYIO_PARAM_BRIGHTNESS
	65 + };
	66 +
	67 + if ((fd = open("/dev/ttyC0", O_RDONLY)) < 0) {
	68 + warn("could not open /dev/ttyC0");
	69 + return NULL;
	70 + }
	71 + if ((err = ioctl(fd, WSDISPLAYIO_GETPARAM, &wsd_param))…
	72 + warn("ioctl 'WSDISPLAYIO_GETPARAM' failed");
	73 + return NULL;
	74 + }
	75 + return bprintf("%d", wsd_param.curval * 100 / wsd_param…
	76 + }
	77 +#endif
	78 diff --git a/config.def.h b/config.def.h
	79 index 5f6c114..69c5d50 100644
	80 --- a/config.def.h
	81 +++ b/config.def.h
	82 @@ -12,6 +12,9 @@ static const char unknown_str[] = "n/a";
	83 /*
	84 * function description argument (exampl…
	85 *
	86 + * backlight_perc backlight percentage device name
	87 + * (intel_backlight)
	88 + * NULL on OpenBSD
	89 * battery_perc battery percentage battery name (BA…
	90 * NULL on OpenBSD/…
	91 * battery_state battery charging state battery name (BA…
	92 diff --git a/slstatus.h b/slstatus.h
	93 index f3b4979..e1759a0 100644
	94 --- a/slstatus.h
	95 +++ b/slstatus.h
	96 @@ -1,5 +1,8 @@
	97 /* See LICENSE file for copyright and license details. */
	98
	99 +/* backlight */
	100 +const char backlight_perc(const char );
	101 +
	102 /* battery */
	103 const char battery_perc(const char );
	104 const char battery_state(const char );