linux/include/sound/mpu401.h
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   1#ifndef __SOUND_MPU401_H
   2#define __SOUND_MPU401_H
   3
   4/*
   5 *  Header file for MPU-401 and compatible cards
   6 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   7 *
   8 *
   9 *   This program is free software; you can redistribute it and/or modify
  10 *   it under the terms of the GNU General Public License as published by
  11 *   the Free Software Foundation; either version 2 of the License, or
  12 *   (at your option) any later version.
  13 *
  14 *   This program is distributed in the hope that it will be useful,
  15 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *   GNU General Public License for more details.
  18 *
  19 *   You should have received a copy of the GNU General Public License
  20 *   along with this program; if not, write to the Free Software
  21 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22 *
  23 */
  24
  25#include <sound/rawmidi.h>
  26#include <linux/interrupt.h>
  27
  28#define MPU401_HW_MPU401                1       /* native MPU401 */
  29#define MPU401_HW_SB                    2       /* SoundBlaster MPU-401 UART */
  30#define MPU401_HW_ES1688                3       /* AudioDrive ES1688 MPU-401 UART */
  31#define MPU401_HW_OPL3SA2               4       /* Yamaha OPL3-SA2 */
  32#define MPU401_HW_SONICVIBES            5       /* S3 SonicVibes */
  33#define MPU401_HW_CS4232                6       /* CS4232 */
  34#define MPU401_HW_ES18XX                7       /* AudioDrive ES18XX MPU-401 UART */
  35#define MPU401_HW_FM801                 8       /* ForteMedia FM801 */
  36#define MPU401_HW_TRID4DWAVE            9       /* Trident 4DWave */
  37#define MPU401_HW_AZT2320               10      /* Aztech AZT2320 */
  38#define MPU401_HW_ALS100                11      /* Avance Logic ALS100 */
  39#define MPU401_HW_ICE1712               12      /* Envy24 */
  40#define MPU401_HW_VIA686A               13      /* VIA 82C686A */
  41#define MPU401_HW_YMFPCI                14      /* YMF DS-XG PCI */
  42#define MPU401_HW_CMIPCI                15      /* CMIPCI MPU-401 UART */
  43#define MPU401_HW_ALS4000               16      /* Avance Logic ALS4000 */
  44#define MPU401_HW_INTEL8X0              17      /* Intel8x0 driver */
  45#define MPU401_HW_PC98II                18      /* Roland PC98II */
  46#define MPU401_HW_AUREAL                19      /* Aureal Vortex */
  47
  48#define MPU401_INFO_INPUT       (1 << 0)        /* input stream */
  49#define MPU401_INFO_OUTPUT      (1 << 1)        /* output stream */
  50#define MPU401_INFO_INTEGRATED  (1 << 2)        /* integrated h/w port */
  51#define MPU401_INFO_MMIO        (1 << 3)        /* MMIO access */
  52#define MPU401_INFO_TX_IRQ      (1 << 4)        /* independent TX irq */
  53#define MPU401_INFO_IRQ_HOOK    (1 << 5)        /* mpu401 irq handler is called
  54                                                   from driver irq handler */
  55#define MPU401_INFO_NO_ACK      (1 << 6)        /* No ACK cmd needed */
  56#define MPU401_INFO_USE_TIMER   (1 << 15)       /* internal */
  57
  58#define MPU401_MODE_BIT_INPUT           0
  59#define MPU401_MODE_BIT_OUTPUT          1
  60#define MPU401_MODE_BIT_INPUT_TRIGGER   2
  61#define MPU401_MODE_BIT_OUTPUT_TRIGGER  3
  62
  63#define MPU401_MODE_INPUT               (1<<MPU401_MODE_BIT_INPUT)
  64#define MPU401_MODE_OUTPUT              (1<<MPU401_MODE_BIT_OUTPUT)
  65#define MPU401_MODE_INPUT_TRIGGER       (1<<MPU401_MODE_BIT_INPUT_TRIGGER)
  66#define MPU401_MODE_OUTPUT_TRIGGER      (1<<MPU401_MODE_BIT_OUTPUT_TRIGGER)
  67
  68#define MPU401_MODE_INPUT_TIMER         (1<<0)
  69#define MPU401_MODE_OUTPUT_TIMER        (1<<1)
  70
  71struct snd_mpu401 {
  72        struct snd_rawmidi *rmidi;
  73
  74        unsigned short hardware;        /* MPU401_HW_XXXX */
  75        unsigned int info_flags;        /* MPU401_INFO_XXX */
  76        unsigned long port;             /* base port of MPU-401 chip */
  77        unsigned long cport;            /* port + 1 (usually) */
  78        struct resource *res;           /* port resource */
  79        int irq;                        /* IRQ number of MPU-401 chip */
  80
  81        unsigned long mode;             /* MPU401_MODE_XXXX */
  82        int timer_invoked;
  83
  84        int (*open_input) (struct snd_mpu401 * mpu);
  85        void (*close_input) (struct snd_mpu401 * mpu);
  86        int (*open_output) (struct snd_mpu401 * mpu);
  87        void (*close_output) (struct snd_mpu401 * mpu);
  88        void *private_data;
  89
  90        struct snd_rawmidi_substream *substream_input;
  91        struct snd_rawmidi_substream *substream_output;
  92
  93        spinlock_t input_lock;
  94        spinlock_t output_lock;
  95        spinlock_t timer_lock;
  96        
  97        struct timer_list timer;
  98
  99        void (*write) (struct snd_mpu401 * mpu, unsigned char data, unsigned long addr);
 100        unsigned char (*read) (struct snd_mpu401 *mpu, unsigned long addr);
 101};
 102
 103/* I/O ports */
 104
 105#define MPU401C(mpu) (mpu)->cport
 106#define MPU401D(mpu) (mpu)->port
 107
 108/*
 109 * control register bits
 110 */
 111/* read MPU401C() */
 112#define MPU401_RX_EMPTY         0x80
 113#define MPU401_TX_FULL          0x40
 114
 115/* write MPU401C() */
 116#define MPU401_RESET            0xff
 117#define MPU401_ENTER_UART       0x3f
 118
 119/* read MPU401D() */
 120#define MPU401_ACK              0xfe
 121
 122
 123/*
 124
 125 */
 126
 127irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);
 128irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);
 129
 130int snd_mpu401_uart_new(struct snd_card *card,
 131                        int device,
 132                        unsigned short hardware,
 133                        unsigned long port,
 134                        unsigned int info_flags,
 135                        int irq,
 136                        struct snd_rawmidi ** rrawmidi);
 137
 138#endif /* __SOUND_MPU401_H */
 139
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