Release 4.7 sound/drivers/pcsp/pcsp.c
/*
* PC-Speaker driver for Linux
*
* Copyright (C) 1997-2001 David Woodhouse
* Copyright (C) 2001-2008 Stas Sergeev
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <linux/mm.h>
#include "pcsp_input.h"
#include "pcsp.h"
MODULE_AUTHOR("Stas Sergeev <stsp@users.sourceforge.net>");
MODULE_DESCRIPTION("PC-Speaker driver");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{PC-Speaker, pcsp}}");
MODULE_ALIAS("platform:pcspkr");
static int index = SNDRV_DEFAULT_IDX1;
/* Index 0-MAX */
static char *id = SNDRV_DEFAULT_STR1;
/* ID for this card */
static bool enable = SNDRV_DEFAULT_ENABLE1;
/* Enable this card */
static bool nopcm;
/* Disable PCM capability of the driver */
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for pcsp soundcard.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for pcsp soundcard.");
module_param(enable, bool, 0444);
MODULE_PARM_DESC(enable, "Enable PC-Speaker sound.");
module_param(nopcm, bool, 0444);
MODULE_PARM_DESC(nopcm, "Disable PC-Speaker PCM sound. Only beeps remain.");
struct snd_pcsp pcsp_chip;
static int snd_pcsp_create(struct snd_card *card)
{
static struct snd_device_ops ops = { };
unsigned int resolution = hrtimer_resolution;
int err, div, min_div, order;
if (!nopcm) {
if (resolution > PCSP_MAX_PERIOD_NS) {
printk(KERN_ERR "PCSP: Timer resolution is not sufficient "
"(%unS)\n", resolution);
printk(KERN_ERR "PCSP: Make sure you have HPET and ACPI "
"enabled.\n");
printk(KERN_ERR "PCSP: Turned into nopcm mode.\n");
nopcm = 1;
}
}
if (loops_per_jiffy >= PCSP_MIN_LPJ && resolution <= PCSP_MIN_PERIOD_NS)
min_div = MIN_DIV;
else
min_div = MAX_DIV;
#if PCSP_DEBUG
printk(KERN_DEBUG "PCSP: lpj=%li, min_div=%i, res=%u\n",
loops_per_jiffy, min_div, resolution);
#endif
div = MAX_DIV / min_div;
order = fls(div) - 1;
pcsp_chip.max_treble = min(order, PCSP_MAX_TREBLE);
pcsp_chip.treble = min(pcsp_chip.max_treble, PCSP_DEFAULT_TREBLE);
pcsp_chip.playback_ptr = 0;
pcsp_chip.period_ptr = 0;
atomic_set(&pcsp_chip.timer_active, 0);
pcsp_chip.enable = 1;
pcsp_chip.pcspkr = 1;
spin_lock_init(&pcsp_chip.substream_lock);
pcsp_chip.card = card;
pcsp_chip.port = 0x61;
pcsp_chip.irq = -1;
pcsp_chip.dma = -1;
/* Register device */
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, &pcsp_chip, &ops);
if (err < 0)
return err;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 226 | 92.24% | 2 | 33.33% |
| thomas gleixner | thomas gleixner | 12 | 4.90% | 2 | 33.33% |
| takashi iwai | takashi iwai | 7 | 2.86% | 2 | 33.33% |
| Total | 245 | 100.00% | 6 | 100.00% |
static int snd_card_pcsp_probe(int devnum, struct device *dev)
{
struct snd_card *card;
int err;
if (devnum != 0)
return -EINVAL;
hrtimer_init(&pcsp_chip.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
pcsp_chip.timer.function = pcsp_do_timer;
err = snd_card_new(dev, index, id, THIS_MODULE, 0, &card);
if (err < 0)
return err;
err = snd_pcsp_create(card);
if (err < 0) {
snd_card_free(card);
return err;
}
if (!nopcm) {
err = snd_pcsp_new_pcm(&pcsp_chip);
if (err < 0) {
snd_card_free(card);
return err;
}
}
err = snd_pcsp_new_mixer(&pcsp_chip, nopcm);
if (err < 0) {
snd_card_free(card);
return err;
}
strcpy(card->driver, "PC-Speaker");
strcpy(card->shortname, "pcsp");
sprintf(card->longname, "Internal PC-Speaker at port 0x%x",
pcsp_chip.port);
err = snd_card_register(card);
if (err < 0) {
snd_card_free(card);
return err;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 205 | 94.91% | 2 | 50.00% |
| takashi iwai | takashi iwai | 11 | 5.09% | 2 | 50.00% |
| Total | 216 | 100.00% | 4 | 100.00% |
static int alsa_card_pcsp_init(struct device *dev)
{
int err;
err = snd_card_pcsp_probe(0, dev);
if (err) {
printk(KERN_ERR "PC-Speaker initialization failed.\n");
return err;
}
/* Well, CONFIG_DEBUG_PAGEALLOC makes the sound horrible. Lets alert */
if (debug_pagealloc_enabled()) {
printk(KERN_WARNING "PCSP: CONFIG_DEBUG_PAGEALLOC is enabled, "
"which may make the sound noisy.\n");
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 49 | 87.50% | 3 | 75.00% |
| joonsoo kim | joonsoo kim | 7 | 12.50% | 1 | 25.00% |
| Total | 56 | 100.00% | 4 | 100.00% |
static void alsa_card_pcsp_exit(struct snd_pcsp *chip)
{
snd_card_free(chip->card);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static int pcsp_probe(struct platform_device *dev)
{
int err;
err = pcspkr_input_init(&pcsp_chip.input_dev, &dev->dev);
if (err < 0)
return err;
err = alsa_card_pcsp_init(&dev->dev);
if (err < 0) {
pcspkr_input_remove(pcsp_chip.input_dev);
return err;
}
platform_set_drvdata(dev, &pcsp_chip);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 77 | 100.00% | 1 | 100.00% |
| Total | 77 | 100.00% | 1 | 100.00% |
static int pcsp_remove(struct platform_device *dev)
{
struct snd_pcsp *chip = platform_get_drvdata(dev);
pcspkr_input_remove(chip->input_dev);
alsa_card_pcsp_exit(chip);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 32 | 88.89% | 1 | 50.00% |
| takashi iwai | takashi iwai | 4 | 11.11% | 1 | 50.00% |
| Total | 36 | 100.00% | 2 | 100.00% |
static void pcsp_stop_beep(struct snd_pcsp *chip)
{
pcsp_sync_stop(chip);
pcspkr_stop_sound();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 18 | 94.74% | 1 | 50.00% |
| takashi iwai | takashi iwai | 1 | 5.26% | 1 | 50.00% |
| Total | 19 | 100.00% | 2 | 100.00% |
#ifdef CONFIG_PM_SLEEP
static int pcsp_suspend(struct device *dev)
{
struct snd_pcsp *chip = dev_get_drvdata(dev);
pcsp_stop_beep(chip);
snd_pcm_suspend_all(chip->pcm);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 34 | 94.44% | 1 | 50.00% |
| takashi iwai | takashi iwai | 2 | 5.56% | 1 | 50.00% |
| Total | 36 | 100.00% | 2 | 100.00% |
static SIMPLE_DEV_PM_OPS(pcsp_pm, pcsp_suspend, NULL);
#define PCSP_PM_OPS &pcsp_pm
#else
#define PCSP_PM_OPS NULL
#endif /* CONFIG_PM_SLEEP */
static void pcsp_shutdown(struct platform_device *dev)
{
struct snd_pcsp *chip = platform_get_drvdata(dev);
pcsp_stop_beep(chip);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
static struct platform_driver pcsp_platform_driver = {
.driver = {
.name = "pcspkr",
.pm = PCSP_PM_OPS,
},
.probe = pcsp_probe,
.remove = pcsp_remove,
.shutdown = pcsp_shutdown,
};
static int __init pcsp_init(void)
{
if (!enable)
return -ENODEV;
return platform_driver_register(&pcsp_platform_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 25 | 100.00% | 2 | 100.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
static void __exit pcsp_exit(void)
{
platform_driver_unregister(&pcsp_platform_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_init(pcsp_init);
module_exit(pcsp_exit);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| stas sergeev | stas sergeev | 916 | 91.69% | 4 | 20.00% |
| takashi iwai | takashi iwai | 46 | 4.60% | 9 | 45.00% |
| thomas gleixner | thomas gleixner | 12 | 1.20% | 2 | 10.00% |
| joonsoo kim | joonsoo kim | 10 | 1.00% | 1 | 5.00% |
| johann felix soden | johann felix soden | 9 | 0.90% | 1 | 5.00% |
| mariusz kozlowski | mariusz kozlowski | 3 | 0.30% | 1 | 5.00% |
| rusty russell | rusty russell | 2 | 0.20% | 1 | 5.00% |
| paul gortmaker | paul gortmaker | 1 | 0.10% | 1 | 5.00% |
| Total | 999 | 100.00% | 20 | 100.00% |
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