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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Misc and compatibility things
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*/
#include <linux/init.h>
#include <linux/export.h>
#include <linux/moduleparam.h>
#include <linux/time.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/core.h>
#ifdef CONFIG_SND_DEBUG
#ifdef CONFIG_SND_DEBUG_VERBOSE
#define DEFAULT_DEBUG_LEVEL 2
#else
#define DEFAULT_DEBUG_LEVEL 1
#endif
static int debug = DEFAULT_DEBUG_LEVEL;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
#endif /* CONFIG_SND_DEBUG */
void release_and_free_resource(struct resource *res)
{
if (res) {
release_resource(res);
kfree(res);
}
}
EXPORT_SYMBOL(release_and_free_resource);
#ifdef CONFIG_SND_VERBOSE_PRINTK
/* strip the leading path if the given path is absolute */
static const char *sanity_file_name(const char *path)
{
if (*path == '/')
return strrchr(path, '/') + 1;
else
return path;
}
#endif
#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
void __snd_printk(unsigned int level, const char *path, int line,
const char *format, ...)
{
va_list args;
#ifdef CONFIG_SND_VERBOSE_PRINTK
int kern_level;
struct va_format vaf;
char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
bool level_found = false;
#endif
#ifdef CONFIG_SND_DEBUG
if (debug < level)
return;
#endif
va_start(args, format);
#ifdef CONFIG_SND_VERBOSE_PRINTK
vaf.fmt = format;
vaf.va = &args;
while ((kern_level = printk_get_level(vaf.fmt)) != 0) {
const char *end_of_header = printk_skip_level(vaf.fmt);
/* Ignore KERN_CONT. We print filename:line for each piece. */
if (kern_level >= '0' && kern_level <= '7') {
memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt);
level_found = true;
}
vaf.fmt = end_of_header;
}
if (!level_found && level)
memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1);
printk(verbose_fmt, sanity_file_name(path), line, &vaf);
#else
vprintk(format, args);
#endif
va_end(args);
}
EXPORT_SYMBOL_GPL(__snd_printk);
#endif
#ifdef CONFIG_PCI
#include <linux/pci.h>
/**
* snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
* @vendor: PCI SSV id
* @device: PCI SSD id
* @list: quirk list, terminated by a null entry
*
* Look through the given quirk list and finds a matching entry
* with the same PCI SSID. When subdevice is 0, all subdevice
* values may match.
*
* Returns the matched entry pointer, or NULL if nothing matched.
*/
const struct snd_pci_quirk *
snd_pci_quirk_lookup_id(u16 vendor, u16 device,
const struct snd_pci_quirk *list)
{
const struct snd_pci_quirk *q;
for (q = list; q->subvendor; q++) {
if (q->subvendor != vendor)
continue;
if (!q->subdevice ||
(device & q->subdevice_mask) == q->subdevice)
return q;
}
return NULL;
}
EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
/**
* snd_pci_quirk_lookup - look up a PCI SSID quirk list
* @pci: pci_dev handle
* @list: quirk list, terminated by a null entry
*
* Look through the given quirk list and finds a matching entry
* with the same PCI SSID. When subdevice is 0, all subdevice
* values may match.
*
* Returns the matched entry pointer, or NULL if nothing matched.
*/
const struct snd_pci_quirk *
snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
{
if (!pci)
return NULL;
return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
pci->subsystem_device,
list);
}
EXPORT_SYMBOL(snd_pci_quirk_lookup);
#endif
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