From b415ed45f4db9f8365daac84cf2518642a174dc0 Mon Sep 17 00:00:00 2001 From: Takashi Iwai 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 --- include/sound/mpu401.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/sound/mpu401.h') 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 + + /* */ -- cgit v1.2.3