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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 <[email protected]>
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
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)->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
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 */