cregit-Linux how code gets into the kernel

Release 4.12 include/sound/mpu401.h

Directory: include/sound
#ifndef __SOUND_MPU401_H

#define __SOUND_MPU401_H

/*
 *  Header file for MPU-401 and compatible cards
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/rawmidi.h>
#include <linux/interrupt.h>


#define MPU401_HW_MPU401		1	
/* native MPU401 */

#define MPU401_HW_SB			2	
/* SoundBlaster MPU-401 UART */

#define MPU401_HW_ES1688		3	
/* AudioDrive ES1688 MPU-401 UART */

#define MPU401_HW_OPL3SA2		4	
/* Yamaha OPL3-SA2 */

#define MPU401_HW_SONICVIBES		5	
/* S3 SonicVibes */

#define MPU401_HW_CS4232		6	
/* CS4232 */

#define MPU401_HW_ES18XX		7	
/* AudioDrive ES18XX MPU-401 UART */

#define MPU401_HW_FM801			8	
/* ForteMedia FM801 */

#define MPU401_HW_TRID4DWAVE		9	
/* Trident 4DWave */

#define MPU401_HW_AZT2320		10	
/* Aztech AZT2320 */

#define MPU401_HW_ALS100		11	
/* Avance Logic ALS100 */

#define MPU401_HW_ICE1712		12	
/* Envy24 */

#define MPU401_HW_VIA686A		13	
/* VIA 82C686A */

#define MPU401_HW_YMFPCI		14	
/* YMF DS-XG PCI */

#define MPU401_HW_CMIPCI		15	
/* CMIPCI MPU-401 UART */

#define MPU401_HW_ALS4000		16	
/* Avance Logic ALS4000 */

#define MPU401_HW_INTEL8X0		17	
/* Intel8x0 driver */

#define MPU401_HW_PC98II		18	
/* Roland PC98II */

#define MPU401_HW_AUREAL		19	
/* Aureal Vortex */


#define MPU401_INFO_INPUT	(1 << 0)	
/* input stream */

#define MPU401_INFO_OUTPUT	(1 << 1)	
/* output stream */

#define MPU401_INFO_INTEGRATED	(1 << 2)	
/* integrated h/w port */

#define MPU401_INFO_MMIO	(1 << 3)	
/* MMIO access */

#define MPU401_INFO_TX_IRQ	(1 << 4)	
/* independent TX irq */

#define MPU401_INFO_IRQ_HOOK	(1 << 5)	
/* mpu401 irq handler is called
                                                   from driver irq handler */

#define MPU401_INFO_NO_ACK	(1 << 6)	
/* No ACK cmd needed */

#define MPU401_INFO_USE_TIMER	(1 << 15)	
/* internal */


#define MPU401_MODE_BIT_INPUT		0

#define MPU401_MODE_BIT_OUTPUT		1

#define MPU401_MODE_BIT_INPUT_TRIGGER	2

#define MPU401_MODE_BIT_OUTPUT_TRIGGER	3


#define MPU401_MODE_INPUT		(1<<MPU401_MODE_BIT_INPUT)

#define MPU401_MODE_OUTPUT		(1<<MPU401_MODE_BIT_OUTPUT)

#define MPU401_MODE_INPUT_TRIGGER	(1<<MPU401_MODE_BIT_INPUT_TRIGGER)

#define MPU401_MODE_OUTPUT_TRIGGER	(1<<MPU401_MODE_BIT_OUTPUT_TRIGGER)


#define MPU401_MODE_INPUT_TIMER		(1<<0)

#define MPU401_MODE_OUTPUT_TIMER	(1<<1)


struct snd_mpu401 {
	
struct snd_rawmidi *rmidi;

	
unsigned short hardware;	/* MPU401_HW_XXXX */
	
unsigned int info_flags;	/* MPU401_INFO_XXX */
	
unsigned long port;		/* base port of MPU-401 chip */
	
unsigned long cport;		/* port + 1 (usually) */
	
struct resource *res;		/* port resource */
	
int irq;			/* IRQ number of MPU-401 chip */

	
unsigned long mode;		/* MPU401_MODE_XXXX */
	
int timer_invoked;

	
int (*open_input) (struct snd_mpu401 * mpu);
	
void (*close_input) (struct snd_mpu401 * mpu);
	
int (*open_output) (struct snd_mpu401 * mpu);
	
void (*close_output) (struct snd_mpu401 * mpu);
	
void *private_data;

	
struct snd_rawmidi_substream *substream_input;
	
struct snd_rawmidi_substream *substream_output;

	
spinlock_t input_lock;
	
spinlock_t output_lock;
	
spinlock_t timer_lock;
	
	
struct timer_list timer;

	
void (*write) (struct snd_mpu401 * mpu, unsigned char data, unsigned long addr);
	
unsigned char (*read) (struct snd_mpu401 *mpu, unsigned long addr);
};

/* I/O ports */


#define MPU401C(mpu) (mpu)->cport

#define MPU401D(mpu) (mpu)->port

/*
 * control register bits
 */
/* read MPU401C() */

#define MPU401_RX_EMPTY		0x80

#define MPU401_TX_FULL		0x40

/* write MPU401C() */

#define MPU401_RESET		0xff

#define MPU401_ENTER_UART	0x3f

/* read MPU401D() */

#define MPU401_ACK		0xfe


/*

 */

irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id);
irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id);

int snd_mpu401_uart_new(struct snd_card *card,
			int device,
			unsigned short hardware,
			unsigned long port,
			unsigned int info_flags,
			int irq,
			struct snd_rawmidi ** rrawmidi);

#endif /* __SOUND_MPU401_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Jaroslav Kysela33474.89%535.71%
Takashi Iwai9521.30%428.57%
Clemens Ladisch112.47%17.14%
Andrew Morton30.67%17.14%
Linus Torvalds20.45%214.29%
David Howells10.22%17.14%
Total446100.00%14100.00%
Directory: include/sound
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.