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linux_dsm_epyc7002/sound/isa/sb/sb_common.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Uros Bizjak <uros@kss-loka.si>
*
* Lowlevel routines for control of Sound Blaster cards
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/io.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/initval.h>
#include <asm/dma.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("ALSA lowlevel driver for Sound Blaster cards");
MODULE_LICENSE("GPL");
#define BUSY_LOOPS 100000
#undef IO_DEBUG
int snd_sbdsp_command(struct snd_sb *chip, unsigned char val)
{
int i;
#ifdef IO_DEBUG
snd_printk(KERN_DEBUG "command 0x%x\n", val);
#endif
for (i = BUSY_LOOPS; i; i--)
if ((inb(SBP(chip, STATUS)) & 0x80) == 0) {
outb(val, SBP(chip, COMMAND));
return 1;
}
snd_printd("%s [0x%lx]: timeout (0x%x)\n", __func__, chip->port, val);
return 0;
}
int snd_sbdsp_get_byte(struct snd_sb *chip)
{
int val;
int i;
for (i = BUSY_LOOPS; i; i--) {
if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
val = inb(SBP(chip, READ));
#ifdef IO_DEBUG
snd_printk(KERN_DEBUG "get_byte 0x%x\n", val);
#endif
return val;
}
}
snd_printd("%s [0x%lx]: timeout\n", __func__, chip->port);
return -ENODEV;
}
int snd_sbdsp_reset(struct snd_sb *chip)
{
int i;
outb(1, SBP(chip, RESET));
udelay(10);
outb(0, SBP(chip, RESET));
udelay(30);
for (i = BUSY_LOOPS; i; i--)
if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
if (inb(SBP(chip, READ)) == 0xaa)
return 0;
else
break;
}
snd_printdd("%s [0x%lx] failed...\n", __func__, chip->port);
return -ENODEV;
}
static int snd_sbdsp_version(struct snd_sb * chip)
{
unsigned int result = -ENODEV;
snd_sbdsp_command(chip, SB_DSP_GET_VERSION);
result = (short) snd_sbdsp_get_byte(chip) << 8;
result |= (short) snd_sbdsp_get_byte(chip);
return result;
}
static int snd_sbdsp_probe(struct snd_sb * chip)
{
int version;
int major, minor;
char *str;
unsigned long flags;
/*
* initialization sequence
*/
spin_lock_irqsave(&chip->reg_lock, flags);
if (snd_sbdsp_reset(chip) < 0) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return -ENODEV;
}
version = snd_sbdsp_version(chip);
if (version < 0) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return -ENODEV;
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
major = version >> 8;
minor = version & 0xff;
snd_printdd("SB [0x%lx]: DSP chip found, version = %i.%i\n",
chip->port, major, minor);
switch (chip->hardware) {
case SB_HW_AUTO:
switch (major) {
case 1:
chip->hardware = SB_HW_10;
str = "1.0";
break;
case 2:
if (minor) {
chip->hardware = SB_HW_201;
str = "2.01+";
} else {
chip->hardware = SB_HW_20;
str = "2.0";
}
break;
case 3:
chip->hardware = SB_HW_PRO;
str = "Pro";
break;
case 4:
chip->hardware = SB_HW_16;
str = "16";
break;
default:
snd_printk(KERN_INFO "SB [0x%lx]: unknown DSP chip version %i.%i\n",
chip->port, major, minor);
return -ENODEV;
}
break;
case SB_HW_ALS100:
str = "16 (ALS-100)";
break;
case SB_HW_ALS4000:
str = "16 (ALS-4000)";
break;
case SB_HW_DT019X:
str = "(DT019X/ALS007)";
break;
case SB_HW_CS5530:
str = "16 (CS5530)";
break;
case SB_HW_JAZZ16:
str = "Pro (Jazz16)";
break;
default:
return -ENODEV;
}
sprintf(chip->name, "Sound Blaster %s", str);
chip->version = (major << 8) | minor;
return 0;
}
static int snd_sbdsp_free(struct snd_sb *chip)
{
release_and_free_resource(chip->res_port);
if (chip->irq >= 0)
free_irq(chip->irq, (void *) chip);
#ifdef CONFIG_ISA
if (chip->dma8 >= 0) {
disable_dma(chip->dma8);
free_dma(chip->dma8);
}
if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
disable_dma(chip->dma16);
free_dma(chip->dma16);
}
#endif
kfree(chip);
return 0;
}
static int snd_sbdsp_dev_free(struct snd_device *device)
{
struct snd_sb *chip = device->device_data;
return snd_sbdsp_free(chip);
}
int snd_sbdsp_create(struct snd_card *card,
unsigned long port,
int irq,
irq_handler_t irq_handler,
int dma8,
int dma16,
unsigned short hardware,
struct snd_sb **r_chip)
{
struct snd_sb *chip;
int err;
static struct snd_device_ops ops = {
.dev_free = snd_sbdsp_dev_free,
};
if (snd_BUG_ON(!r_chip))
return -EINVAL;
*r_chip = NULL;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->reg_lock);
spin_lock_init(&chip->open_lock);
spin_lock_init(&chip->midi_input_lock);
spin_lock_init(&chip->mixer_lock);
chip->irq = -1;
chip->dma8 = -1;
chip->dma16 = -1;
chip->port = port;
if (request_irq(irq, irq_handler,
(hardware == SB_HW_ALS4000 ||
hardware == SB_HW_CS5530) ?
IRQF_SHARED : 0,
"SoundBlaster", (void *) chip)) {
snd_printk(KERN_ERR "sb: can't grab irq %d\n", irq);
snd_sbdsp_free(chip);
return -EBUSY;
}
chip->irq = irq;
if (hardware == SB_HW_ALS4000)
goto __skip_allocation;
if ((chip->res_port = request_region(port, 16, "SoundBlaster")) == NULL) {
snd_printk(KERN_ERR "sb: can't grab port 0x%lx\n", port);
snd_sbdsp_free(chip);
return -EBUSY;
}
#ifdef CONFIG_ISA
if (dma8 >= 0 && request_dma(dma8, "SoundBlaster - 8bit")) {
snd_printk(KERN_ERR "sb: can't grab DMA8 %d\n", dma8);
snd_sbdsp_free(chip);
return -EBUSY;
}
chip->dma8 = dma8;
if (dma16 >= 0) {
if (hardware != SB_HW_ALS100 && (dma16 < 5 || dma16 > 7)) {
/* no duplex */
dma16 = -1;
} else if (request_dma(dma16, "SoundBlaster - 16bit")) {
snd_printk(KERN_ERR "sb: can't grab DMA16 %d\n", dma16);
snd_sbdsp_free(chip);
return -EBUSY;
}
}
chip->dma16 = dma16;
#endif
__skip_allocation:
chip->card = card;
chip->hardware = hardware;
if ((err = snd_sbdsp_probe(chip)) < 0) {
snd_sbdsp_free(chip);
return err;
}
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_sbdsp_free(chip);
return err;
}
*r_chip = chip;
return 0;
}
EXPORT_SYMBOL(snd_sbdsp_command);
EXPORT_SYMBOL(snd_sbdsp_get_byte);
EXPORT_SYMBOL(snd_sbdsp_reset);
EXPORT_SYMBOL(snd_sbdsp_create);
/* sb_mixer.c */
EXPORT_SYMBOL(snd_sbmixer_write);
EXPORT_SYMBOL(snd_sbmixer_read);
EXPORT_SYMBOL(snd_sbmixer_new);
EXPORT_SYMBOL(snd_sbmixer_add_ctl);
#ifdef CONFIG_PM
EXPORT_SYMBOL(snd_sbmixer_suspend);
EXPORT_SYMBOL(snd_sbmixer_resume);
#endif
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