1 files changed, 24 insertions, 11 deletions

diff --git a/bin/backlight.c b/bin/backlight.c
index 5894cd8..e3d6f6a 100644
--- a/bin/backlight.c
+++ b/bin/backlight.c
@@ -6,11 +6,10 @@
 #include <stdlib.h>
 #include <limits.h>
 #include <errno.h>
+#include <sys/types.h>
+#include <dirent.h>
 
-const char *backlight_f[] = {
-	"/sys/class/backlight/intel_backlight/",
-	"/sys/class/backlight/amdgpu_bl0/",
-};
+#define BACKLIGHT_DIR "/sys/class/backlight"
 
 void
 die(const char *msg)
@@ -134,11 +133,29 @@ main(int argc, char **argv)
 	if (percent < 0 || percent > 100)
 		die("percent must be between 0 and 100");
 
+	DIR *d = opendir(BACKLIGHT_DIR);
+	if (!d)
+		err("opendir");
+
+	errno = 0;
+	for (;;) {
+		struct dirent *dent = readdir(d);
+		if(!dent&&errno!=0)
+			err("readdir");
+
+		if (!dent)
+			break;
+
+		if (strcmp("..", dent->d_name)==0 || strcmp(".", dent->d_name)==0)
+			continue;
+
+		char *prefix = appendStr(1024, BACKLIGHT_DIR"/", dent->d_name);
+
+		printf("found backlight: %s\n", prefix);
 	
-	for (int i=0; i < sizeof(backlight_f)/sizeof(backlight_f[0]); i++) {
 		int ret;
 		long max = 0;
-		ret = maxBrightness(backlight_f[i], &max);
+		ret = maxBrightness(prefix, &max);
 		if (ret != 0) {
 			const char *msg = strerror(ret);
 			continue;
@@ -146,13 +163,9 @@ main(int argc, char **argv)
 
 		float p = (double)max*((double)percent/100.0);
 
-		ret = setBacklight(backlight_f[i], (int)p);
+		ret = setBacklight(prefix, (int)p);
 		if (ret != 0) {
 			perror("setBacklight");
 		}
 	}
-	
-
-
-
 }