include/sound/mpu401.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifndef __SOUND_MPU401_H
   3 #define __SOUND_MPU401_H
   4
   5 /*
   6  *  Header file for MPU-401 and compatible cards
   7  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   8  */
   9
  10 #include <sound/rawmidi.h>
  11 #include <linux/interrupt.h>
  12
  13 #define MPU401_HW_MPU401                1       /* native MPU401 */
  14 #define MPU401_HW_SB                    2       /* SoundBlaster MPU-401 UART */
  15 #define MPU401_HW_ES1688                3       /* AudioDrive ES1688 MPU-401 UART */
  16 #define MPU401_HW_OPL3SA2               4       /* Yamaha OPL3-SA2 */
  17 #define MPU401_HW_SONICVIBES            5       /* S3 SonicVibes */
  18 #define MPU401_HW_CS4232                6       /* CS4232 */
  19 #define MPU401_HW_ES18XX                7       /* AudioDrive ES18XX MPU-401 UART */
  20 #define MPU401_HW_FM801                 8       /* ForteMedia FM801 */
  21 #define MPU401_HW_TRID4DWAVE            9       /* Trident 4DWave */
  22 #define MPU401_HW_AZT2320               10      /* Aztech AZT2320 */
  23 #define MPU401_HW_ALS100                11      /* Avance Logic ALS100 */
  24 #define MPU401_HW_ICE1712               12      /* Envy24 */
  25 #define MPU401_HW_VIA686A               13      /* VIA 82C686A */
  26 #define MPU401_HW_YMFPCI                14      /* YMF DS-XG PCI */
  27 #define MPU401_HW_CMIPCI                15      /* CMIPCI MPU-401 UART */
  28 #define MPU401_HW_ALS4000               16      /* Avance Logic ALS4000 */
  29 #define MPU401_HW_INTEL8X0              17      /* Intel8x0 driver */
  30 #define MPU401_HW_PC98II                18      /* Roland PC98II */
  31 #define MPU401_HW_AUREAL                19      /* Aureal Vortex */
  32
  33 #define MPU401_INFO_INPUT       (1 << 0)        /* input stream */
  34 #define MPU401_INFO_OUTPUT      (1 << 1)        /* output stream */
  35 #define MPU401_INFO_INTEGRATED  (1 << 2)        /* integrated h/w port */
  36 #define MPU401_INFO_MMIO        (1 << 3)        /* MMIO access */
  37 #define MPU401_INFO_TX_IRQ      (1 << 4)        /* independent TX irq */
  38 #define MPU401_INFO_IRQ_HOOK    (1 << 5)        /* mpu401 irq handler is called
  39                                                    from driver irq handler */
  40 #define MPU401_INFO_NO_ACK      (1 << 6)        /* No ACK cmd needed */
  41 #define MPU401_INFO_USE_TIMER   (1 << 15)       /* internal */
  42
  43 #define MPU401_MODE_BIT_INPUT           0
  44 #define MPU401_MODE_BIT_OUTPUT          1
  45 #define MPU401_MODE_BIT_INPUT_TRIGGER   2
  46 #define MPU401_MODE_BIT_OUTPUT_TRIGGER  3
  47
  48 #define MPU401_MODE_INPUT               (1<<MPU401_MODE_BIT_INPUT)
  49 #define MPU401_MODE_OUTPUT              (1<<MPU401_MODE_BIT_OUTPUT)
  50 #define MPU401_MODE_INPUT_TRIGGER       (1<<MPU401_MODE_BIT_INPUT_TRIGGER)
  51 #define MPU401_MODE_OUTPUT_TRIGGER      (1<<MPU401_MODE_BIT_OUTPUT_TRIGGER)
  52
  53 #define MPU401_MODE_INPUT_TIMER         (1<<0)
  54 #define MPU401_MODE_OUTPUT_TIMER        (1<<1)
  55
  56 struct snd_mpu401 {
  57         struct snd_rawmidi *rmidi;
  58
  59         unsigned short hardware;        /* MPU401_HW_XXXX */
  60         unsigned int info_flags;        /* MPU401_INFO_XXX */
  61         unsigned long port;             /* base port of MPU-401 chip */
  62         unsigned long cport;            /* port + 1 (usually) */
  63         struct resource *res;           /* port resource */
  64         int irq;                        /* IRQ number of MPU-401 chip */
  65
  66         unsigned long mode;             /* MPU401_MODE_XXXX */
  67         int timer_invoked;
  68
  69         int (*open_input) (struct snd_mpu401 * mpu);
  70         void (*close_input) (struct snd_mpu401 * mpu);
  71         int (*open_output) (struct snd_mpu401 * mpu);
  72         void (*close_output) (struct snd_mpu401 * mpu);
  73         void *private_data;
  74
  75         struct snd_rawmidi_substream *substream_input;
  76         struct snd_rawmidi_substream *substream_output;
  77
  78         spinlock_t input_lock;
  79         spinlock_t output_lock;
  80         spinlock_t timer_lock;
  81
  82         struct timer_list timer;
  83
  84         void (*write) (struct snd_mpu401 * mpu, unsigned char data, unsigned long addr);
  85         unsigned char (*read) (struct snd_mpu401 *mpu, unsigned long addr);
  86 };
  87
  88 /* I/O ports */
  89
  90 #define MPU401C(mpu) (mpu)->cport
  91 #define MPU401D(mpu) (mpu)->port
  92
  93 /*
  94  * control register bits
  95  */
  96 /* read MPU401C() */
  97 #define MPU401_RX_EMPTY         0x80
  98 #define MPU401_TX_FULL          0x40
  99
 100 /* write MPU401C() */
 101 #define MPU401_RESET            0xff
 102 #define MPU401_ENTER_UART       0x3f
 103
 104 /* read MPU401D() */
 105 #define MPU401_ACK              0xfe
 106
 107
 108 /*
 109
 110  */
 111
 112 irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);
 113 irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);
 114
 115 int snd_mpu401_uart_new(struct snd_card *card,
 116                         int device,
 117                         unsigned short hardware,
 118                         unsigned long port,
 119                         unsigned int info_flags,
 120                         int irq,
 121                         struct snd_rawmidi ** rrawmidi);
 122
 123 #endif /* __SOUND_MPU401_H */