Root/include/sound/mpu401.h

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 <sound/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
71struct 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
127irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);
128irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);
129
130int 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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