124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __SOUND_MPU401_H
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#define __SOUND_MPU401_H
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/*
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* Header file for MPU-401 and compatible cards
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#include <sound/rawmidi.h>
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#include <linux/interrupt.h>
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#define MPU401_HW_MPU401 1 /* native MPU401 */
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#define MPU401_HW_SB 2 /* SoundBlaster MPU-401 UART */
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#define MPU401_HW_ES1688 3 /* AudioDrive ES1688 MPU-401 UART */
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#define MPU401_HW_OPL3SA2 4 /* Yamaha OPL3-SA2 */
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#define MPU401_HW_SONICVIBES 5 /* S3 SonicVibes */
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#define MPU401_HW_CS4232 6 /* CS4232 */
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#define MPU401_HW_ES18XX 7 /* AudioDrive ES18XX MPU-401 UART */
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#define MPU401_HW_FM801 8 /* ForteMedia FM801 */
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#define MPU401_HW_TRID4DWAVE 9 /* Trident 4DWave */
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#define MPU401_HW_AZT2320 10 /* Aztech AZT2320 */
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#define MPU401_HW_ALS100 11 /* Avance Logic ALS100 */
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#define MPU401_HW_ICE1712 12 /* Envy24 */
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#define MPU401_HW_VIA686A 13 /* VIA 82C686A */
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#define MPU401_HW_YMFPCI 14 /* YMF DS-XG PCI */
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#define MPU401_HW_CMIPCI 15 /* CMIPCI MPU-401 UART */
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#define MPU401_HW_ALS4000 16 /* Avance Logic ALS4000 */
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#define MPU401_HW_INTEL8X0 17 /* Intel8x0 driver */
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#define MPU401_HW_PC98II 18 /* Roland PC98II */
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#define MPU401_HW_AUREAL 19 /* Aureal Vortex */
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#define MPU401_INFO_INPUT (1 << 0) /* input stream */
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#define MPU401_INFO_OUTPUT (1 << 1) /* output stream */
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#define MPU401_INFO_INTEGRATED (1 << 2) /* integrated h/w port */
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#define MPU401_INFO_MMIO (1 << 3) /* MMIO access */
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#define MPU401_INFO_TX_IRQ (1 << 4) /* independent TX irq */
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#define MPU401_INFO_IRQ_HOOK (1 << 5) /* mpu401 irq handler is called
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from driver irq handler */
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#define MPU401_INFO_NO_ACK (1 << 6) /* No ACK cmd needed */
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#define MPU401_INFO_USE_TIMER (1 << 15) /* internal */
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#define MPU401_MODE_BIT_INPUT 0
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#define MPU401_MODE_BIT_OUTPUT 1
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#define MPU401_MODE_BIT_INPUT_TRIGGER 2
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#define MPU401_MODE_BIT_OUTPUT_TRIGGER 3
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#define MPU401_MODE_INPUT (1<<MPU401_MODE_BIT_INPUT)
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#define MPU401_MODE_OUTPUT (1<<MPU401_MODE_BIT_OUTPUT)
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#define MPU401_MODE_INPUT_TRIGGER (1<<MPU401_MODE_BIT_INPUT_TRIGGER)
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#define MPU401_MODE_OUTPUT_TRIGGER (1<<MPU401_MODE_BIT_OUTPUT_TRIGGER)
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#define MPU401_MODE_INPUT_TIMER (1<<0)
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#define MPU401_MODE_OUTPUT_TIMER (1<<1)
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struct snd_mpu401 {
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struct snd_rawmidi *rmidi;
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unsigned short hardware; /* MPU401_HW_XXXX */
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unsigned int info_flags; /* MPU401_INFO_XXX */
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unsigned long port; /* base port of MPU-401 chip */
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unsigned long cport; /* port + 1 (usually) */
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struct resource *res; /* port resource */
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int irq; /* IRQ number of MPU-401 chip */
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unsigned long mode; /* MPU401_MODE_XXXX */
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int timer_invoked;
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int (*open_input) (struct snd_mpu401 * mpu);
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void (*close_input) (struct snd_mpu401 * mpu);
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int (*open_output) (struct snd_mpu401 * mpu);
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void (*close_output) (struct snd_mpu401 * mpu);
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void *private_data;
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struct snd_rawmidi_substream *substream_input;
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struct snd_rawmidi_substream *substream_output;
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spinlock_t input_lock;
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spinlock_t output_lock;
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spinlock_t timer_lock;
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struct timer_list timer;
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void (*write) (struct snd_mpu401 * mpu, unsigned char data, unsigned long addr);
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unsigned char (*read) (struct snd_mpu401 *mpu, unsigned long addr);
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};
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/* I/O ports */
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#define MPU401C(mpu) (mpu)->cport
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#define MPU401D(mpu) (mpu)->port
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/*
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* control register bits
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*/
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/* read MPU401C() */
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#define MPU401_RX_EMPTY 0x80
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#define MPU401_TX_FULL 0x40
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/* write MPU401C() */
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#define MPU401_RESET 0xff
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#define MPU401_ENTER_UART 0x3f
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/* read MPU401D() */
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#define MPU401_ACK 0xfe
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/*
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*/
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irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);
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irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);
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int snd_mpu401_uart_new(struct snd_card *card,
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int device,
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unsigned short hardware,
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unsigned long port,
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unsigned int info_flags,
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int irq,
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struct snd_rawmidi ** rrawmidi);
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#endif /* __SOUND_MPU401_H */
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