From b415ed45f4db9f8365daac84cf2518642a174dc0 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 23 Apr 2008 17:47:28 +0200
Subject: [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>
---
include/sound/mpu401.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
(limited to 'include')
diff --git a/include/sound/mpu401.h b/include/sound/mpu401.h
index d45218b44dfe..68b634b75068 100644
--- a/include/sound/mpu401.h
+++ b/include/sound/mpu401.h
@@ -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
+
+
/*
*/
--
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