diff --git a/libc/kernel/uapi/linux/gpio.h b/libc/kernel/uapi/linux/gpio.h
index 1e03277..773f409 100644
--- a/libc/kernel/uapi/linux/gpio.h
+++ b/libc/kernel/uapi/linux/gpio.h
@@ -30,6 +30,9 @@
 #define GPIOLINE_FLAG_ACTIVE_LOW (1UL << 2)
 #define GPIOLINE_FLAG_OPEN_DRAIN (1UL << 3)
 #define GPIOLINE_FLAG_OPEN_SOURCE (1UL << 4)
+#define GPIOLINE_FLAG_BIAS_PULL_UP (1UL << 5)
+#define GPIOLINE_FLAG_BIAS_PULL_DOWN (1UL << 6)
+#define GPIOLINE_FLAG_BIAS_DISABLE (1UL << 7)
 struct gpioline_info {
   __u32 line_offset;
   __u32 flags;
@@ -42,6 +45,9 @@
 #define GPIOHANDLE_REQUEST_ACTIVE_LOW (1UL << 2)
 #define GPIOHANDLE_REQUEST_OPEN_DRAIN (1UL << 3)
 #define GPIOHANDLE_REQUEST_OPEN_SOURCE (1UL << 4)
+#define GPIOHANDLE_REQUEST_BIAS_PULL_UP (1UL << 5)
+#define GPIOHANDLE_REQUEST_BIAS_PULL_DOWN (1UL << 6)
+#define GPIOHANDLE_REQUEST_BIAS_DISABLE (1UL << 7)
 struct gpiohandle_request {
   __u32 lineoffsets[GPIOHANDLES_MAX];
   __u32 flags;
@@ -50,6 +56,12 @@
   __u32 lines;
   int fd;
 };
+struct gpiohandle_config {
+  __u32 flags;
+  __u8 default_values[GPIOHANDLES_MAX];
+  __u32 padding[4];
+};
+#define GPIOHANDLE_SET_CONFIG_IOCTL _IOWR(0xB4, 0x0a, struct gpiohandle_config)
 struct gpiohandle_data {
   __u8 values[GPIOHANDLES_MAX];
 };