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authorTakashi Iwai <tiwai@suse.de>2008-04-23 17:47:28 +0200
committerTakashi Iwai <tiwai@suse.de>2008-04-24 12:38:22 +0200
commitb415ed45f4db9f8365daac84cf2518642a174dc0 (patch)
tree9cb81b685a0b73b5f8b41e41d389fc41a6466fd5 /include/sound
parentefd89d9dcf75ab0a31b200db0ae4ae19cad25e48 (diff)
downloadlinux-b415ed45f4db9f8365daac84cf2518642a174dc0.tar.gz
[ALSA] Define MPU401 registers in sound/mpu401_uart.h
Define some MPU401 registers in sound/mpu401_uart.h so that other drivers can refer to them. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/mpu401.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/sound/mpu401.h b/include/sound/mpu401.h
index d45218b44df..68b634b7506 100644
--- a/include/sound/mpu401.h
+++ b/include/sound/mpu401.h
@@ -103,6 +103,21 @@ struct snd_mpu401 {
#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
+
+
+/*
*/