#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 */
ript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Steven Rostedt (VMware) &lt;rostedt@goodmis.org&gt;</td><td class='right'>2017-01-30 19:27:10 -0500</td></tr>
<tr><th>committer</th><td>Steven Rostedt (VMware) &lt;rostedt@goodmis.org&gt;</td><td class='right'>2017-01-31 09:13:49 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/qcom/lpass-cpu.c?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>79c6f448c8b79c321e4a1f31f98194e4f6b6cae7</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/qcom/lpass-cpu.c?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>370efda701f03cccf21e02bb1fdd3b852547d75c</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/qcom/lpass-cpu.c?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>sound/soc/qcom/lpass-cpu.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/qcom/lpass-cpu.c?id=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>0c744ea4f77d72b3dcebb7a8f2684633ec79be88</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/qcom/lpass-cpu.c?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7&amp;id2=0c744ea4f77d72b3dcebb7a8f2684633ec79be88'>diff</a>)</td></tr></table>
<div class='commit-subject'>tracing: Fix hwlat kthread migration</div><div class='commit-msg'>The hwlat tracer creates a kernel thread at start of the tracer. It is
pinned to a single CPU and will move to the next CPU after each period of
running. If the user modifies the migration thread's affinity, it will not
change after that happens.

The original code created the thread at the first instance it was called,
but later was changed to destroy the thread after the tracer was finished,
and would not be created until the next instance of the tracer was
established. The code that initialized the affinity was only called on the
initial instantiation of the tracer. After that, it was not initialized, and
the previous affinity did not match the current newly created one, making
it appear that the user modified the thread's affinity when it did not, and
the thread failed to migrate again.

Cc: stable@vger.kernel.org
Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs")
Signed-off-by: Steven Rostedt (VMware) &lt;rostedt@goodmis.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>Diffstat</a> (limited to 'sound/soc/qcom/lpass-cpu.c')</div><table summary='diffstat' class='diffstat'>