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TOMOYO Linux Cross Reference
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 "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 
 71 struct 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 
127 irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);
128 irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);
129 
130 int 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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