diff --git a/power/power_ext.c b/power/power_ext.c
index 2aac5c8..e7289c6 100755
--- a/power/power_ext.c
+++ b/power/power_ext.c
@@ -17,74 +17,29 @@
 #include <errno.h>
 #include <string.h>
 #include <fcntl.h>
-#include <ctype.h>
 
 #define LOG_TAG "PowerHAL_K_Ext"
 #include <utils/Log.h>
 
-#define MAX_INPUTS 20
-#define INPUT_PREFIX "/sys/class/input/input"
-#define MAX_PATH_SIZE 256
+/* touchkeys */
+#define TK_POWER "/sys/class/input/input1/enabled"
 
-static const char *names[] = {
-    "sec_touchscreen", // 3
-    "light_sensor" // 5
-    "proximity_sensor" // 6
-    "gpio-keys" // 7
-};
-#define N_NAMES (sizeof(names) / sizeof(names[0]))
-static char paths[N_NAMES][MAX_PATH_SIZE];
-static int have_found_paths;
-
-static size_t sysfs_read(char *path, char *buffer, size_t n)
-{
-    char buf[MAX_PATH_SIZE];
-    int fd;
-    size_t len;
-
-    if ((fd = open(path, O_RDONLY)) < 0)
-    {
-        if (errno != ENOENT)
-        {
-            strerror_r(errno, buf, sizeof(buf));
-            ALOGE("Error opening %s: %s\n", path, buf);
-        }
-        return 0;
-    }
-
-    len = read(fd, buffer, n);
-    if (len < 0)
-    {
-        strerror_r(errno, buf, sizeof(buf));
-        ALOGE("Error reading from %s: %s\n", path, buf);
-        return 0;
-    }
-
-    while (len > 0 && isspace(buffer[len-1]))
-        len--;
-    if (len < n)
-        buffer[len] = '\0';
-
-    close(fd);
-
-    return len;
-}
-
-static void sysfs_write(char *path, char *s)
-{
-    char buf[MAX_PATH_SIZE];
+/* touchscreen */
+#define TS_POWER "/sys/class/input/input2/enabled"
 
+static void sysfs_write(char *path, char *s) {
+    char buf[80];
+    int len;
     int fd = open(path, O_WRONLY);
-    if (fd < 0)
-    {
+
+    if (fd < 0) {
         strerror_r(errno, buf, sizeof(buf));
         ALOGE("Error opening %s: %s\n", path, buf);
         return;
     }
 
-    size_t len = write(fd, s, strlen(s));
-    if (len < 0)
-    {
+    len = write(fd, s, strlen(s));
+    if (len < 0) {
         strerror_r(errno, buf, sizeof(buf));
         ALOGE("Error writing to %s: %s\n", path, buf);
     }
@@ -92,47 +47,12 @@ static void sysfs_write(char *path, char *s)
     close(fd);
 }
 
-static void find_paths(void)
-{
-    size_t i, j;
-    char path[MAX_PATH_SIZE];
-    char name[MAX_PATH_SIZE];
-
-    for (i = 0; i < N_NAMES; i++)
-        paths[i][0] = 0;
-
-    for (i = 0; i < MAX_INPUTS; i++)
-    {
-        sprintf(path, "%s%d/name", INPUT_PREFIX, i);
-        if (sysfs_read(path, name, sizeof(name)) > 0)
-        {
-            for (j = 0; j < N_NAMES; j++)
-            {
-                if (strcmp(name, names[j]) == 0)
-                {
-                    sprintf(paths[j], "%s%d/enabled", INPUT_PREFIX, i);
-                    ALOGD("%s => %s\n", names[j], paths[j]);
-                }
-            }
-        }
-    }
-}
-
-void power_set_interactive_ext(int on)
-{
+void power_set_interactive_ext(int on) {
     ALOGD("%s: %s input devices", __func__, on ? "enabling" : "disabling");
-
-    if (!have_found_paths)
-    {
-        find_paths();
-        have_found_paths = 1;
-    }
-
-    for (size_t i = 0; i < N_NAMES; i++)
-        sysfs_write(paths[i], on ? "1" : "0");
+    sysfs_write(TK_POWER, on ? "1" : "0");
+    sysfs_write(TS_POWER, on ? "1" : "0");
 }
 
-void cm_power_set_interactive_ext(int on)
-{
+void cm_power_set_interactive_ext(int on) {
     power_set_interactive_ext(on);
 }