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mpu401.h

#ifndef __SOUND_MPU401_H
#define __SOUND_MPU401_H

/*
 *  Header file for MPU-401 and compatible cards
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include "rawmidi.h"
#include <linux/interrupt.h>

#define MPU401_HW_MPU401            1     /* native MPU401 */
#define MPU401_HW_SB                2     /* SoundBlaster MPU-401 UART */
#define MPU401_HW_ES1688            3     /* AudioDrive ES1688 MPU-401 UART */
#define MPU401_HW_OPL3SA2           4     /* Yamaha OPL3-SA2 */
#define MPU401_HW_SONICVIBES        5     /* S3 SonicVibes */
#define MPU401_HW_CS4232            6     /* CS4232 */
#define MPU401_HW_ES18XX            7     /* AudioDrive ES18XX MPU-401 UART */
#define MPU401_HW_FM801             8     /* ForteMedia FM801 */
#define MPU401_HW_TRID4DWAVE        9     /* Trident 4DWave */
#define MPU401_HW_AZT2320           10    /* Aztech AZT2320 */
#define MPU401_HW_ALS100            11    /* Avance Logic ALS100 */
#define MPU401_HW_ICE1712           12    /* Envy24 */
#define MPU401_HW_VIA686A           13    /* VIA 82C686A */
#define MPU401_HW_YMFPCI            14    /* YMF DS-XG PCI */
#define MPU401_HW_CMIPCI            15    /* CMIPCI MPU-401 UART */
#define MPU401_HW_ALS4000           16    /* Avance Logic ALS4000 */
#define MPU401_HW_INTEL8X0          17    /* Intel8x0 driver */
#define MPU401_HW_PC98II            18    /* Roland PC98II */
#define MPU401_HW_AUREAL            19    /* Aureal Vortex */

#define MPU401_INFO_INPUT     (1 << 0)    /* input stream */
#define MPU401_INFO_OUTPUT    (1 << 1)    /* output stream */
#define MPU401_INFO_INTEGRATED      (1 << 2)    /* integrated h/w port */
#define MPU401_INFO_MMIO      (1 << 3)    /* MMIO access */
#define MPU401_INFO_TX_IRQ    (1 << 4)    /* independent TX irq */

#define MPU401_MODE_BIT_INPUT       0
#define MPU401_MODE_BIT_OUTPUT            1
#define MPU401_MODE_BIT_INPUT_TRIGGER     2
#define MPU401_MODE_BIT_OUTPUT_TRIGGER    3

#define MPU401_MODE_INPUT           (1<<MPU401_MODE_BIT_INPUT)
#define MPU401_MODE_OUTPUT          (1<<MPU401_MODE_BIT_OUTPUT)
#define MPU401_MODE_INPUT_TRIGGER   (1<<MPU401_MODE_BIT_INPUT_TRIGGER)
#define MPU401_MODE_OUTPUT_TRIGGER  (1<<MPU401_MODE_BIT_OUTPUT_TRIGGER)

#define MPU401_MODE_INPUT_TIMER           (1<<0)
#define MPU401_MODE_OUTPUT_TIMER    (1<<1)

struct snd_mpu401 {
      struct snd_rawmidi *rmidi;

      unsigned short hardware;      /* MPU401_HW_XXXX */
      unsigned int info_flags;      /* MPU401_INFO_XXX */
      unsigned long port;           /* base port of MPU-401 chip */
      unsigned long cport;          /* port + 1 (usually) */
      struct resource *res;         /* port resource */
      int irq;                /* IRQ number of MPU-401 chip (-1 = poll) */
      int irq_flags;

      unsigned long mode;           /* MPU401_MODE_XXXX */
      int timer_invoked;

      int (*open_input) (struct snd_mpu401 * mpu);
      void (*close_input) (struct snd_mpu401 * mpu);
      int (*open_output) (struct snd_mpu401 * mpu);
      void (*close_output) (struct snd_mpu401 * mpu);
      void *private_data;

      struct snd_rawmidi_substream *substream_input;
      struct snd_rawmidi_substream *substream_output;

      spinlock_t input_lock;
      spinlock_t output_lock;
      spinlock_t timer_lock;
      
      struct timer_list timer;

      void (*write) (struct snd_mpu401 * mpu, unsigned char data, unsigned long addr);
      unsigned char (*read) (struct snd_mpu401 *mpu, unsigned long addr);
};

/* I/O ports */

#define MPU401C(mpu) (mpu)->cport
#define MPU401D(mpu) (mpu)->port

/*

 */

irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id,
                              struct pt_regs *regs);
irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id,
                               struct pt_regs *regs);

int snd_mpu401_uart_new(struct snd_card *card,
                  int device,
                  unsigned short hardware,
                  unsigned long port,
                  unsigned int info_flags,
                  int irq,
                  int irq_flags,
                  struct snd_rawmidi ** rrawmidi);

#endif /* __SOUND_MPU401_H */

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