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v5.4
  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *  Misc and compatibility things
  4 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  5 */
  6
  7#include <linux/init.h>
  8#include <linux/export.h>
  9#include <linux/moduleparam.h>
 10#include <linux/time.h>
 11#include <linux/slab.h>
 12#include <linux/ioport.h>
 13#include <sound/core.h>
 14
 15#ifdef CONFIG_SND_DEBUG
 16
 17#ifdef CONFIG_SND_DEBUG_VERBOSE
 18#define DEFAULT_DEBUG_LEVEL	2
 19#else
 20#define DEFAULT_DEBUG_LEVEL	1
 21#endif
 22
 23static int debug = DEFAULT_DEBUG_LEVEL;
 24module_param(debug, int, 0644);
 25MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
 26
 27#endif /* CONFIG_SND_DEBUG */
 28
 29void release_and_free_resource(struct resource *res)
 30{
 31	if (res) {
 32		release_resource(res);
 33		kfree(res);
 34	}
 35}
 36EXPORT_SYMBOL(release_and_free_resource);
 37
 38#ifdef CONFIG_SND_VERBOSE_PRINTK
 39/* strip the leading path if the given path is absolute */
 40static const char *sanity_file_name(const char *path)
 41{
 42	if (*path == '/')
 43		return strrchr(path, '/') + 1;
 44	else
 45		return path;
 46}
 47#endif
 48
 49#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
 50void __snd_printk(unsigned int level, const char *path, int line,
 51		  const char *format, ...)
 52{
 53	va_list args;
 54#ifdef CONFIG_SND_VERBOSE_PRINTK
 55	int kern_level;
 56	struct va_format vaf;
 57	char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
 58	bool level_found = false;
 59#endif
 60
 61#ifdef CONFIG_SND_DEBUG
 62	if (debug < level)
 63		return;
 64#endif
 65
 66	va_start(args, format);
 67#ifdef CONFIG_SND_VERBOSE_PRINTK
 68	vaf.fmt = format;
 69	vaf.va = &args;
 70
 71	while ((kern_level = printk_get_level(vaf.fmt)) != 0) {
 72		const char *end_of_header = printk_skip_level(vaf.fmt);
 73
 74		/* Ignore KERN_CONT. We print filename:line for each piece. */
 75		if (kern_level >= '0' && kern_level <= '7') {
 76			memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt);
 77			level_found = true;
 78		}
 79
 80		vaf.fmt = end_of_header;
 81	}
 82
 83	if (!level_found && level)
 84		memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1);
 85
 86	printk(verbose_fmt, sanity_file_name(path), line, &vaf);
 87#else
 88	vprintk(format, args);
 89#endif
 90	va_end(args);
 91}
 92EXPORT_SYMBOL_GPL(__snd_printk);
 93#endif
 94
 95#ifdef CONFIG_PCI
 96#include <linux/pci.h>
 97/**
 98 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
 99 * @vendor: PCI SSV id
100 * @device: PCI SSD id
101 * @list: quirk list, terminated by a null entry
102 *
103 * Look through the given quirk list and finds a matching entry
104 * with the same PCI SSID.  When subdevice is 0, all subdevice
105 * values may match.
106 *
107 * Returns the matched entry pointer, or NULL if nothing matched.
108 */
109const struct snd_pci_quirk *
110snd_pci_quirk_lookup_id(u16 vendor, u16 device,
111			const struct snd_pci_quirk *list)
112{
113	const struct snd_pci_quirk *q;
114
115	for (q = list; q->subvendor; q++) {
116		if (q->subvendor != vendor)
117			continue;
118		if (!q->subdevice ||
119		    (device & q->subdevice_mask) == q->subdevice)
120			return q;
121	}
122	return NULL;
123}
124EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
125
126/**
127 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
128 * @pci: pci_dev handle
129 * @list: quirk list, terminated by a null entry
130 *
131 * Look through the given quirk list and finds a matching entry
132 * with the same PCI SSID.  When subdevice is 0, all subdevice
133 * values may match.
134 *
135 * Returns the matched entry pointer, or NULL if nothing matched.
136 */
137const struct snd_pci_quirk *
138snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
139{
140	if (!pci)
141		return NULL;
142	return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
143				       pci->subsystem_device,
144				       list);
145}
146EXPORT_SYMBOL(snd_pci_quirk_lookup);
147#endif
v5.9
  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *  Misc and compatibility things
  4 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  5 */
  6
  7#include <linux/init.h>
  8#include <linux/export.h>
  9#include <linux/moduleparam.h>
 10#include <linux/time.h>
 11#include <linux/slab.h>
 12#include <linux/ioport.h>
 13#include <sound/core.h>
 14
 15#ifdef CONFIG_SND_DEBUG
 16
 17#ifdef CONFIG_SND_DEBUG_VERBOSE
 18#define DEFAULT_DEBUG_LEVEL	2
 19#else
 20#define DEFAULT_DEBUG_LEVEL	1
 21#endif
 22
 23static int debug = DEFAULT_DEBUG_LEVEL;
 24module_param(debug, int, 0644);
 25MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
 26
 27#endif /* CONFIG_SND_DEBUG */
 28
 29void release_and_free_resource(struct resource *res)
 30{
 31	if (res) {
 32		release_resource(res);
 33		kfree(res);
 34	}
 35}
 36EXPORT_SYMBOL(release_and_free_resource);
 37
 38#ifdef CONFIG_SND_VERBOSE_PRINTK
 39/* strip the leading path if the given path is absolute */
 40static const char *sanity_file_name(const char *path)
 41{
 42	if (*path == '/')
 43		return strrchr(path, '/') + 1;
 44	else
 45		return path;
 46}
 47#endif
 48
 49#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
 50void __snd_printk(unsigned int level, const char *path, int line,
 51		  const char *format, ...)
 52{
 53	va_list args;
 54#ifdef CONFIG_SND_VERBOSE_PRINTK
 55	int kern_level;
 56	struct va_format vaf;
 57	char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
 58	bool level_found = false;
 59#endif
 60
 61#ifdef CONFIG_SND_DEBUG
 62	if (debug < level)
 63		return;
 64#endif
 65
 66	va_start(args, format);
 67#ifdef CONFIG_SND_VERBOSE_PRINTK
 68	vaf.fmt = format;
 69	vaf.va = &args;
 70
 71	while ((kern_level = printk_get_level(vaf.fmt)) != 0) {
 72		const char *end_of_header = printk_skip_level(vaf.fmt);
 73
 74		/* Ignore KERN_CONT. We print filename:line for each piece. */
 75		if (kern_level >= '0' && kern_level <= '7') {
 76			memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt);
 77			level_found = true;
 78		}
 79
 80		vaf.fmt = end_of_header;
 81	}
 82
 83	if (!level_found && level)
 84		memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1);
 85
 86	printk(verbose_fmt, sanity_file_name(path), line, &vaf);
 87#else
 88	vprintk(format, args);
 89#endif
 90	va_end(args);
 91}
 92EXPORT_SYMBOL_GPL(__snd_printk);
 93#endif
 94
 95#ifdef CONFIG_PCI
 96#include <linux/pci.h>
 97/**
 98 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
 99 * @vendor: PCI SSV id
100 * @device: PCI SSD id
101 * @list: quirk list, terminated by a null entry
102 *
103 * Look through the given quirk list and finds a matching entry
104 * with the same PCI SSID.  When subdevice is 0, all subdevice
105 * values may match.
106 *
107 * Returns the matched entry pointer, or NULL if nothing matched.
108 */
109const struct snd_pci_quirk *
110snd_pci_quirk_lookup_id(u16 vendor, u16 device,
111			const struct snd_pci_quirk *list)
112{
113	const struct snd_pci_quirk *q;
114
115	for (q = list; q->subvendor; q++) {
116		if (q->subvendor != vendor)
117			continue;
118		if (!q->subdevice ||
119		    (device & q->subdevice_mask) == q->subdevice)
120			return q;
121	}
122	return NULL;
123}
124EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
125
126/**
127 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
128 * @pci: pci_dev handle
129 * @list: quirk list, terminated by a null entry
130 *
131 * Look through the given quirk list and finds a matching entry
132 * with the same PCI SSID.  When subdevice is 0, all subdevice
133 * values may match.
134 *
135 * Returns the matched entry pointer, or NULL if nothing matched.
136 */
137const struct snd_pci_quirk *
138snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
139{
140	if (!pci)
141		return NULL;
142	return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
143				       pci->subsystem_device,
144				       list);
145}
146EXPORT_SYMBOL(snd_pci_quirk_lookup);
147#endif