diff options
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/Kconfig | 21 | ||||
| -rw-r--r-- | sound/core/Makefile | 2 | ||||
| -rw-r--r-- | sound/core/device.c | 4 | ||||
| -rw-r--r-- | sound/core/hrtimer.c | 154 | ||||
| -rw-r--r-- | sound/core/info.c | 17 | ||||
| -rw-r--r-- | sound/core/init.c | 71 | ||||
| -rw-r--r-- | sound/core/jack.c | 15 | ||||
| -rw-r--r-- | sound/core/rawmidi.c | 4 | ||||
| -rw-r--r-- | sound/core/rtctimer.c | 2 | ||||
| -rw-r--r-- | sound/core/seq/seq.c | 4 | ||||
| -rw-r--r-- | sound/core/timer.c | 2 |
11 files changed, 287 insertions, 9 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig index 66348c92f88..7bbdda041a9 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -95,6 +95,26 @@ config SND_SEQUENCER_OSS this will be compiled as a module. The module will be called snd-seq-oss. +config SND_HRTIMER + tristate "HR-timer backend support" + depends on HIGH_RES_TIMERS + select SND_TIMER + help + Say Y here to enable HR-timer backend for ALSA timer. ALSA uses + the hrtimer as a precise timing source. The ALSA sequencer code + also can use this timing source. + + To compile this driver as a module, choose M here: the module + will be called snd-hrtimer. + +config SND_SEQ_HRTIMER_DEFAULT + bool "Use HR-timer as default sequencer timer" + depends on SND_HRTIMER && SND_SEQUENCER + default y + help + Say Y here to use the HR-timer backend as the default sequencer + timer. + config SND_RTCTIMER tristate "RTC Timer support" depends on RTC @@ -114,6 +134,7 @@ config SND_RTCTIMER config SND_SEQ_RTCTIMER_DEFAULT bool "Use RTC as default sequencer timer" depends on SND_RTCTIMER && SND_SEQUENCER + depends on !SND_SEQ_HRTIMER_DEFAULT default y help Say Y here to use the RTC timer as the default sequencer diff --git a/sound/core/Makefile b/sound/core/Makefile index d57125a5687..4229052e7b9 100644 --- a/sound/core/Makefile +++ b/sound/core/Makefile @@ -17,12 +17,14 @@ snd-page-alloc-$(CONFIG_HAS_DMA) += sgbuf.o snd-rawmidi-objs := rawmidi.o snd-timer-objs := timer.o +snd-hrtimer-objs := hrtimer.o snd-rtctimer-objs := rtctimer.o snd-hwdep-objs := hwdep.o obj-$(CONFIG_SND) += snd.o obj-$(CONFIG_SND_HWDEP) += snd-hwdep.o obj-$(CONFIG_SND_TIMER) += snd-timer.o +obj-$(CONFIG_SND_HRTIMER) += snd-hrtimer.o obj-$(CONFIG_SND_RTCTIMER) += snd-rtctimer.o obj-$(CONFIG_SND_PCM) += snd-pcm.o snd-page-alloc.o obj-$(CONFIG_SND_RAWMIDI) += snd-rawmidi.o diff --git a/sound/core/device.c b/sound/core/device.c index c58d8227254..a67dfac08c0 100644 --- a/sound/core/device.c +++ b/sound/core/device.c @@ -98,7 +98,7 @@ int snd_device_free(struct snd_card *card, void *device_data) kfree(dev); return 0; } - snd_printd("device free %p (from %p), not found\n", device_data, + snd_printd("device free %p (from %pF), not found\n", device_data, __builtin_return_address(0)); return -ENXIO; } @@ -135,7 +135,7 @@ int snd_device_disconnect(struct snd_card *card, void *device_data) } return 0; } - snd_printd("device disconnect %p (from %p), not found\n", device_data, + snd_printd("device disconnect %p (from %pF), not found\n", device_data, __builtin_return_address(0)); return -ENXIO; } diff --git a/sound/core/hrtimer.c b/sound/core/hrtimer.c new file mode 100644 index 00000000000..34c7d48f506 --- /dev/null +++ b/sound/core/hrtimer.c @@ -0,0 +1,154 @@ +/* + * ALSA timer back-end using hrtimer + * Copyright (C) 2008 Takashi Iwai + * + * 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 <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/hrtimer.h> +#include <sound/core.h> +#include <sound/timer.h> + +MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); +MODULE_DESCRIPTION("ALSA hrtimer backend"); +MODULE_LICENSE("GPL"); + +MODULE_ALIAS("snd-timer-" __stringify(SNDRV_TIMER_GLOBAL_HRTIMER)); + +#define NANO_SEC 1000000000UL /* 10^9 in sec */ +static unsigned int resolution; + +struct snd_hrtimer { + struct snd_timer *timer; + struct hrtimer hrt; +}; + +static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt) +{ + struct snd_hrtimer *stime = container_of(hrt, struct snd_hrtimer, hrt); + struct snd_timer *t = stime->timer; + hrtimer_forward_now(hrt, ns_to_ktime(t->sticks * resolution)); + snd_timer_interrupt(stime->timer, t->sticks); + return HRTIMER_RESTART; +} + +static int snd_hrtimer_open(struct snd_timer *t) +{ + struct snd_hrtimer *stime; + + stime = kmalloc(sizeof(*stime), GFP_KERNEL); + if (!stime) + return -ENOMEM; + hrtimer_init(&stime->hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + stime->timer = t; + stime->hrt.function = snd_hrtimer_callback; + t->private_data = stime; + return 0; +} + +static int snd_hrtimer_close(struct snd_timer *t) +{ + struct snd_hrtimer *stime = t->private_data; + + if (stime) { + hrtimer_cancel(&stime->hrt); + kfree(stime); + t->private_data = NULL; + } + return 0; +} + +static int snd_hrtimer_start(struct snd_timer *t) +{ + struct snd_hrtimer *stime = t->private_data; + + hrtimer_start(&stime->hrt, ns_to_ktime(t->sticks * resolution), + HRTIMER_MODE_REL); + return 0; +} + +static int snd_hrtimer_stop(struct snd_timer *t) +{ + struct snd_hrtimer *stime = t->private_data; + + hrtimer_cancel(&stime->hrt); + return 0; +} + +static struct snd_timer_hardware hrtimer_hw = { + .flags = SNDRV_TIMER_HW_AUTO, + .open = snd_hrtimer_open, + .close = snd_hrtimer_close, + .start = snd_hrtimer_start, + .stop = snd_hrtimer_stop, +}; + +/* + * entry functions + */ + +static struct snd_timer *mytimer; + +static int __init snd_hrtimer_init(void) +{ + struct snd_timer *timer; + struct timespec tp; + int err; + + hrtimer_get_res(CLOCK_MONOTONIC, &tp); + if (tp.tv_sec > 0 || !tp.tv_nsec) { + snd_printk(KERN_ERR + "snd-hrtimer: Invalid resolution %u.%09u", + (unsigned)tp.tv_sec, (unsigned)tp.tv_nsec); + return -EINVAL; + } + resolution = tp.tv_nsec; + + /* Create a new timer and set up the fields */ + err = snd_timer_global_new("hrtimer", SNDRV_TIMER_GLOBAL_HRTIMER, + &timer); + if (err < 0) + return err; + + timer->module = THIS_MODULE; + strcpy(timer->name, "HR timer"); + timer->hw = hrtimer_hw; + timer->hw.resolution = resolution; + timer->hw.ticks = NANO_SEC / resolution; + + err = snd_timer_global_register(timer); + if (err < 0) { + snd_timer_global_free(timer); + return err; + } + mytimer = timer; /* remember this */ + + return 0; +} + +static void __exit snd_hrtimer_exit(void) +{ + if (mytimer) { + snd_timer_global_free(mytimer); + mytimer = NULL; + } +} + +module_init(snd_hrtimer_init); +module_exit(snd_hrtimer_exit); diff --git a/sound/core/info.c b/sound/core/info.c index 527b207462b..70fa87189f3 100644 --- a/sound/core/info.c +++ b/sound/core/info.c @@ -653,6 +653,23 @@ int snd_info_card_register(struct snd_card *card) } /* + * called on card->id change + */ +void snd_info_card_id_change(struct snd_card *card) +{ + mutex_lock(&info_mutex); + if (card->proc_root_link) { + snd_remove_proc_entry(snd_proc_root, card->proc_root_link); + card->proc_root_link = NULL; + } + if (strcmp(card->id, card->proc_root->name)) + card->proc_root_link = proc_symlink(card->id, + snd_proc_root, + card->proc_root->name); + mutex_unlock(&info_mutex); +} + +/* * de-register the card proc file * called from init.c */ diff --git a/sound/core/init.c b/sound/core/init.c index b47ff8b44be..0d5520c415d 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -533,6 +533,65 @@ static void choose_default_id(struct snd_card *card) } } +#ifndef CONFIG_SYSFS_DEPRECATED +static ssize_t +card_id_show_attr(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct snd_card *card = dev_get_drvdata(dev); + return snprintf(buf, PAGE_SIZE, "%s\n", card ? card->id : "(null)"); +} + +static ssize_t +card_id_store_attr(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct snd_card *card = dev_get_drvdata(dev); + char buf1[sizeof(card->id)]; + size_t copy = count > sizeof(card->id) - 1 ? + sizeof(card->id) - 1 : count; + size_t idx; + int c; + + for (idx = 0; idx < copy; idx++) { + c = buf[idx]; + if (!isalnum(c) && c != '_' && c != '-') + return -EINVAL; + } + memcpy(buf1, buf, copy); + buf1[copy] = '\0'; + mutex_lock(&snd_card_mutex); + if (!snd_info_check_reserved_words(buf1)) { + __exist: + mutex_unlock(&snd_card_mutex); + return -EEXIST; + } + for (idx = 0; idx < snd_ecards_limit; idx++) { + if (snd_cards[idx] && !strcmp(snd_cards[idx]->id, buf1)) + goto __exist; + } + strcpy(card->id, buf1); + snd_info_card_id_change(card); + mutex_unlock(&snd_card_mutex); + + return count; +} + +static struct device_attribute card_id_attrs = + __ATTR(id, S_IRUGO | S_IWUSR, card_id_show_attr, card_id_store_attr); + +static ssize_t +card_number_show_attr(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct snd_card *card = dev_get_drvdata(dev); + return snprintf(buf, PAGE_SIZE, "%i\n", card ? card->number : -1); +} + +static struct device_attribute card_number_attrs = + __ATTR(number, S_IRUGO, card_number_show_attr, NULL); +#endif /* CONFIG_SYSFS_DEPRECATED */ + /** * snd_card_register - register the soundcard * @card: soundcard structure @@ -553,7 +612,7 @@ int snd_card_register(struct snd_card *card) #ifndef CONFIG_SYSFS_DEPRECATED if (!card->card_dev) { card->card_dev = device_create(sound_class, card->dev, - MKDEV(0, 0), NULL, + MKDEV(0, 0), card, "card%i", card->number); if (IS_ERR(card->card_dev)) card->card_dev = NULL; @@ -576,6 +635,16 @@ int snd_card_register(struct snd_card *card) if (snd_mixer_oss_notify_callback) snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_REGISTER); #endif +#ifndef CONFIG_SYSFS_DEPRECATED + if (card->card_dev) { + err = device_create_file(card->card_dev, &card_id_attrs); + if (err < 0) + return err; + err = device_create_file(card->card_dev, &card_number_attrs); + if (err < 0) + return err; + } +#endif return 0; } diff --git a/sound/core/jack.c b/sound/core/jack.c index bd2d9e6b55e..dd4a12dc09a 100644 --- a/sound/core/jack.c +++ b/sound/core/jack.c @@ -34,6 +34,7 @@ static int snd_jack_dev_free(struct snd_device *device) else input_free_device(jack->input_dev); + kfree(jack->id); kfree(jack); return 0; @@ -87,7 +88,7 @@ int snd_jack_new(struct snd_card *card, const char *id, int type, if (jack == NULL) return -ENOMEM; - jack->id = id; + jack->id = kstrdup(id, GFP_KERNEL); jack->input_dev = input_allocate_device(); if (jack->input_dev == NULL) { @@ -102,9 +103,15 @@ int snd_jack_new(struct snd_card *card, const char *id, int type, if (type & SND_JACK_HEADPHONE) input_set_capability(jack->input_dev, EV_SW, SW_HEADPHONE_INSERT); + if (type & SND_JACK_LINEOUT) + input_set_capability(jack->input_dev, EV_SW, + SW_LINEOUT_INSERT); if (type & SND_JACK_MICROPHONE) input_set_capability(jack->input_dev, EV_SW, SW_MICROPHONE_INSERT); + if (type & SND_JACK_MECHANICAL) + input_set_capability(jack->input_dev, EV_SW, + SW_JACK_PHYSICAL_INSERT); err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops); if (err < 0) @@ -153,9 +160,15 @@ void snd_jack_report(struct snd_jack *jack, int status) if (jack->type & SND_JACK_HEADPHONE) input_report_switch(jack->input_dev, SW_HEADPHONE_INSERT, status & SND_JACK_HEADPHONE); + if (jack->type & SND_JACK_LINEOUT) + input_report_switch(jack->input_dev, SW_LINEOUT_INSERT, + status & SND_JACK_LINEOUT); if (jack->type & SND_JACK_MICROPHONE) input_report_switch(jack->input_dev, SW_MICROPHONE_INSERT, status & SND_JACK_MICROPHONE); + if (jack->type & SND_JACK_MECHANICAL) + input_report_switch(jack->input_dev, SW_JACK_PHYSICAL_INSERT, + status & SND_JACK_MECHANICAL); input_sync(jack->input_dev); } diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 39672f68ce5..002777ba336 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -151,7 +151,7 @@ static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *subs if (!substream->opened) return; if (up) { - tasklet_hi_schedule(&substream->runtime->tasklet); + tasklet_schedule(&substream->runtime->tasklet); } else { tasklet_kill(&substream->runtime->tasklet); substream->ops->trigger(substream, 0); @@ -908,7 +908,7 @@ int snd_rawmidi_receive(struct snd_rawmidi_substream *substream, } if (result > 0) { if (runtime->event) - tasklet_hi_schedule(&runtime->tasklet); + tasklet_schedule(&runtime->tasklet); else if (snd_rawmidi_ready(substream)) wake_up(&runtime->sleep); } diff --git a/sound/core/rtctimer.c b/sound/core/rtctimer.c index 51e64e30dd3..0851cd13e30 100644 --- a/sound/core/rtctimer.c +++ b/sound/core/rtctimer.c @@ -118,7 +118,7 @@ static void rtctimer_tasklet(unsigned long data) */ static void rtctimer_interrupt(void *private_data) { - tasklet_hi_schedule(private_data); + tasklet_schedule(private_data); } diff --git a/sound/core/seq/seq.c b/sound/core/seq/seq.c index ee0f8405ab3..bf09a5ad186 100644 --- a/sound/core/seq/seq.c +++ b/sound/core/seq/seq.c @@ -43,7 +43,9 @@ int seq_default_timer_class = SNDRV_TIMER_CLASS_GLOBAL; int seq_default_timer_sclass = SNDRV_TIMER_SCLASS_NONE; int seq_default_timer_card = -1; int seq_default_timer_device = -#ifdef CONFIG_SND_SEQ_RTCTIMER_DEFAULT +#ifdef CONFIG_SND_SEQ_HRTIMER_DEFAULT + SNDRV_TIMER_GLOBAL_HRTIMER +#elif defined(CONFIG_SND_SEQ_RTCTIMER_DEFAULT) SNDRV_TIMER_GLOBAL_RTC #else SNDRV_TIMER_GLOBAL_SYSTEM diff --git a/sound/core/timer.c b/sound/core/timer.c index c584408c9f1..796532081e8 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -743,7 +743,7 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left) spin_unlock_irqrestore(&timer->lock, flags); if (use_tasklet) - tasklet_hi_schedule(&timer->task_queue); + tasklet_schedule(&timer->task_queue); } /* |