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1/* SPDX-License-Identifier: GPL-2.0-or-later */2#ifndef __SOUND_MPU401_H3#define __SOUND_MPU401_H4 5/*6 * Header file for MPU-401 and compatible cards7 * 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 called39 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 044#define MPU401_MODE_BIT_OUTPUT 145#define MPU401_MODE_BIT_INPUT_TRIGGER 246#define MPU401_MODE_BIT_OUTPUT_TRIGGER 347 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 56struct 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)->cport91#define MPU401D(mpu) (mpu)->port92 93/*94 * control register bits95 */96/* read MPU401C() */97#define MPU401_RX_EMPTY 0x8098#define MPU401_TX_FULL 0x4099 100/* write MPU401C() */101#define MPU401_RESET 0xff102#define MPU401_ENTER_UART 0x3f103 104/* read MPU401D() */105#define MPU401_ACK 0xfe106 107 108/*109 110 */111 112irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);113irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);114 115int 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 */124