[ALSA] Define MPU401 registers in sound/mpu401_uart.h

[~andy/linux] / include / sound / mpu401.h

diff --git a/include/sound/mpu401.h b/include/sound/mpu401.h
index 8c88267e9beaaa7aa5f95e843703c4a3ad7fcc67..68b634b75068bfe9e33573d6c1fe2d6f475a8b53 100644 (file)
--- a/include/sound/mpu401.h
+++ b/include/sound/mpu401.h
@@ -3,7 +3,7 @@
 
 /*
  *  Header file for MPU-401 and compatible cards
- *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  *
  *
  *   This program is free software; you can redistribute it and/or modify
@@ -102,6 +102,21 @@ struct snd_mpu401 {
 #define MPU401C(mpu) (mpu)->cport
 #define MPU401D(mpu) (mpu)->port
 
+/*
+ * control register bits
+ */
+/* read MPU401C() */
+#define MPU401_RX_EMPTY                0x80
+#define MPU401_TX_FULL         0x40
+
+/* write MPU401C() */
+#define MPU401_RESET           0xff
+#define MPU401_ENTER_UART      0x3f
+
+/* read MPU401D() */
+#define MPU401_ACK             0xfe
+
+
 /*
 
  */