diff --git a/libc/kernel/uapi/linux/spi/spi.h b/libc/kernel/uapi/linux/spi/spi.h
new file mode 100644
index 0000000..39267a2
--- /dev/null
+++ b/libc/kernel/uapi/linux/spi/spi.h
@@ -0,0 +1,44 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _UAPI_SPI_H
+#define _UAPI_SPI_H
+#include <linux/const.h>
+#define SPI_CPHA _BITUL(0)
+#define SPI_CPOL _BITUL(1)
+#define SPI_MODE_0 (0 | 0)
+#define SPI_MODE_1 (0 | SPI_CPHA)
+#define SPI_MODE_2 (SPI_CPOL | 0)
+#define SPI_MODE_3 (SPI_CPOL | SPI_CPHA)
+#define SPI_MODE_X_MASK (SPI_CPOL | SPI_CPHA)
+#define SPI_CS_HIGH _BITUL(2)
+#define SPI_LSB_FIRST _BITUL(3)
+#define SPI_3WIRE _BITUL(4)
+#define SPI_LOOP _BITUL(5)
+#define SPI_NO_CS _BITUL(6)
+#define SPI_READY _BITUL(7)
+#define SPI_TX_DUAL _BITUL(8)
+#define SPI_TX_QUAD _BITUL(9)
+#define SPI_RX_DUAL _BITUL(10)
+#define SPI_RX_QUAD _BITUL(11)
+#define SPI_CS_WORD _BITUL(12)
+#define SPI_TX_OCTAL _BITUL(13)
+#define SPI_RX_OCTAL _BITUL(14)
+#define SPI_3WIRE_HIZ _BITUL(15)
+#define SPI_MODE_USER_MASK (_BITUL(16) - 1)
+#endif
diff --git a/libc/kernel/uapi/linux/spi/spidev.h b/libc/kernel/uapi/linux/spi/spidev.h
index dede0f0..19d1d84 100644
--- a/libc/kernel/uapi/linux/spi/spidev.h
+++ b/libc/kernel/uapi/linux/spi/spidev.h
@@ -20,26 +20,7 @@
 #define SPIDEV_H
 #include <linux/types.h>
 #include <linux/ioctl.h>
-#define SPI_CPHA 0x01
-#define SPI_CPOL 0x02
-#define SPI_MODE_0 (0 | 0)
-#define SPI_MODE_1 (0 | SPI_CPHA)
-#define SPI_MODE_2 (SPI_CPOL | 0)
-#define SPI_MODE_3 (SPI_CPOL | SPI_CPHA)
-#define SPI_CS_HIGH 0x04
-#define SPI_LSB_FIRST 0x08
-#define SPI_3WIRE 0x10
-#define SPI_LOOP 0x20
-#define SPI_NO_CS 0x40
-#define SPI_READY 0x80
-#define SPI_TX_DUAL 0x100
-#define SPI_TX_QUAD 0x200
-#define SPI_RX_DUAL 0x400
-#define SPI_RX_QUAD 0x800
-#define SPI_CS_WORD 0x1000
-#define SPI_TX_OCTAL 0x2000
-#define SPI_RX_OCTAL 0x4000
-#define SPI_3WIRE_HIZ 0x8000
+#include <linux/spi/spi.h>
 #define SPI_IOC_MAGIC 'k'
 struct spi_ioc_transfer {
   __u64 tx_buf;