Merge branch 'topic/pcm-cleanup' into for-linus
This commit is contained in:
commit
d807500a24
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@ -364,7 +364,6 @@ struct snd_pcm_substream {
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/* -- timer section -- */
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struct snd_timer *timer; /* timer */
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unsigned timer_running: 1; /* time is running */
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spinlock_t timer_lock;
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/* -- next substream -- */
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struct snd_pcm_substream *next;
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/* -- linked substreams -- */
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@ -667,7 +667,6 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count)
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spin_lock_init(&substream->self_group.lock);
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INIT_LIST_HEAD(&substream->self_group.substreams);
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list_add_tail(&substream->link_list, &substream->self_group.substreams);
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spin_lock_init(&substream->timer_lock);
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atomic_set(&substream->mmap_count, 0);
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prev = substream;
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}
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@ -125,23 +125,32 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram
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}
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}
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#ifdef CONFIG_SND_PCM_XRUN_DEBUG
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#define xrun_debug(substream) ((substream)->pstr->xrun_debug)
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#else
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#define xrun_debug(substream) 0
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#endif
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#define dump_stack_on_xrun(substream) do { \
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if (xrun_debug(substream) > 1) \
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dump_stack(); \
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} while (0)
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static void xrun(struct snd_pcm_substream *substream)
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{
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snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
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#ifdef CONFIG_SND_PCM_XRUN_DEBUG
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if (substream->pstr->xrun_debug) {
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if (xrun_debug(substream)) {
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snd_printd(KERN_DEBUG "XRUN: pcmC%dD%d%c\n",
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substream->pcm->card->number,
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substream->pcm->device,
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substream->stream ? 'c' : 'p');
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if (substream->pstr->xrun_debug > 1)
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dump_stack();
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dump_stack_on_xrun(substream);
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}
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#endif
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}
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static inline snd_pcm_uframes_t snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
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struct snd_pcm_runtime *runtime)
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static snd_pcm_uframes_t
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snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
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struct snd_pcm_runtime *runtime)
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{
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snd_pcm_uframes_t pos;
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@ -150,17 +159,21 @@ static inline snd_pcm_uframes_t snd_pcm_update_hw_ptr_pos(struct snd_pcm_substre
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pos = substream->ops->pointer(substream);
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if (pos == SNDRV_PCM_POS_XRUN)
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return pos; /* XRUN */
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#ifdef CONFIG_SND_DEBUG
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if (pos >= runtime->buffer_size) {
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snd_printk(KERN_ERR "BUG: stream = %i, pos = 0x%lx, buffer size = 0x%lx, period size = 0x%lx\n", substream->stream, pos, runtime->buffer_size, runtime->period_size);
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if (printk_ratelimit()) {
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snd_printd(KERN_ERR "BUG: stream = %i, pos = 0x%lx, "
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"buffer size = 0x%lx, period size = 0x%lx\n",
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substream->stream, pos, runtime->buffer_size,
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runtime->period_size);
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}
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pos = 0;
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}
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#endif
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pos -= pos % runtime->min_align;
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return pos;
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}
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static inline int snd_pcm_update_hw_ptr_post(struct snd_pcm_substream *substream,
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struct snd_pcm_runtime *runtime)
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static int snd_pcm_update_hw_ptr_post(struct snd_pcm_substream *substream,
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struct snd_pcm_runtime *runtime)
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{
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snd_pcm_uframes_t avail;
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@ -182,11 +195,21 @@ static inline int snd_pcm_update_hw_ptr_post(struct snd_pcm_substream *substream
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return 0;
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}
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static inline int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
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#define hw_ptr_error(substream, fmt, args...) \
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do { \
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if (xrun_debug(substream)) { \
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if (printk_ratelimit()) { \
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snd_printd("PCM: " fmt, ##args); \
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} \
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dump_stack_on_xrun(substream); \
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} \
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} while (0)
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static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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snd_pcm_uframes_t pos;
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snd_pcm_uframes_t new_hw_ptr, hw_ptr_interrupt;
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snd_pcm_uframes_t new_hw_ptr, hw_ptr_interrupt, hw_base;
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snd_pcm_sframes_t delta;
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pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
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@ -194,36 +217,53 @@ static inline int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *subs
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xrun(substream);
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return -EPIPE;
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}
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if (runtime->period_size == runtime->buffer_size)
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goto __next_buf;
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new_hw_ptr = runtime->hw_ptr_base + pos;
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hw_base = runtime->hw_ptr_base;
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new_hw_ptr = hw_base + pos;
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hw_ptr_interrupt = runtime->hw_ptr_interrupt + runtime->period_size;
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delta = hw_ptr_interrupt - new_hw_ptr;
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if (delta > 0) {
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if ((snd_pcm_uframes_t)delta < runtime->buffer_size / 2) {
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#ifdef CONFIG_SND_PCM_XRUN_DEBUG
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if (runtime->periods > 1 && substream->pstr->xrun_debug) {
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snd_printd(KERN_ERR "Unexpected hw_pointer value [1] (stream = %i, delta: -%ld, max jitter = %ld): wrong interrupt acknowledge?\n", substream->stream, (long) delta, runtime->buffer_size / 2);
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if (substream->pstr->xrun_debug > 1)
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dump_stack();
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}
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#endif
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return 0;
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}
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__next_buf:
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runtime->hw_ptr_base += runtime->buffer_size;
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if (runtime->hw_ptr_base == runtime->boundary)
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runtime->hw_ptr_base = 0;
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new_hw_ptr = runtime->hw_ptr_base + pos;
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delta = new_hw_ptr - hw_ptr_interrupt;
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if (hw_ptr_interrupt >= runtime->boundary) {
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hw_ptr_interrupt -= runtime->boundary;
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if (hw_base < runtime->boundary / 2)
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/* hw_base was already lapped; recalc delta */
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delta = new_hw_ptr - hw_ptr_interrupt;
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}
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if (delta < 0) {
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delta += runtime->buffer_size;
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if (delta < 0) {
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hw_ptr_error(substream,
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"Unexpected hw_pointer value "
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"(stream=%i, pos=%ld, intr_ptr=%ld)\n",
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substream->stream, (long)pos,
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(long)hw_ptr_interrupt);
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/* rebase to interrupt position */
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hw_base = new_hw_ptr = hw_ptr_interrupt;
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/* align hw_base to buffer_size */
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hw_base -= hw_base % runtime->buffer_size;
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delta = 0;
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} else {
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hw_base += runtime->buffer_size;
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if (hw_base >= runtime->boundary)
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hw_base = 0;
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new_hw_ptr = hw_base + pos;
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}
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}
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if (delta > runtime->period_size) {
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hw_ptr_error(substream,
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"Lost interrupts? "
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"(stream=%i, delta=%ld, intr_ptr=%ld)\n",
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substream->stream, (long)delta,
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(long)hw_ptr_interrupt);
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/* rebase hw_ptr_interrupt */
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hw_ptr_interrupt =
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new_hw_ptr - new_hw_ptr % runtime->period_size;
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}
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
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runtime->silence_size > 0)
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snd_pcm_playback_silence(substream, new_hw_ptr);
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runtime->hw_ptr_base = hw_base;
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runtime->status->hw_ptr = new_hw_ptr;
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runtime->hw_ptr_interrupt = new_hw_ptr - new_hw_ptr % runtime->period_size;
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runtime->hw_ptr_interrupt = hw_ptr_interrupt;
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return snd_pcm_update_hw_ptr_post(substream, runtime);
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}
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@ -233,7 +273,7 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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snd_pcm_uframes_t pos;
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snd_pcm_uframes_t old_hw_ptr, new_hw_ptr;
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snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_base;
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snd_pcm_sframes_t delta;
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old_hw_ptr = runtime->status->hw_ptr;
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@ -242,29 +282,38 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
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xrun(substream);
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return -EPIPE;
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}
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new_hw_ptr = runtime->hw_ptr_base + pos;
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hw_base = runtime->hw_ptr_base;
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new_hw_ptr = hw_base + pos;
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delta = old_hw_ptr - new_hw_ptr;
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if (delta > 0) {
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if ((snd_pcm_uframes_t)delta < runtime->buffer_size / 2) {
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#ifdef CONFIG_SND_PCM_XRUN_DEBUG
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if (runtime->periods > 2 && substream->pstr->xrun_debug) {
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snd_printd(KERN_ERR "Unexpected hw_pointer value [2] (stream = %i, delta: -%ld, max jitter = %ld): wrong interrupt acknowledge?\n", substream->stream, (long) delta, runtime->buffer_size / 2);
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if (substream->pstr->xrun_debug > 1)
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dump_stack();
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}
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#endif
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delta = new_hw_ptr - old_hw_ptr;
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if (delta < 0) {
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delta += runtime->buffer_size;
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if (delta < 0) {
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hw_ptr_error(substream,
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"Unexpected hw_pointer value [2] "
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"(stream=%i, pos=%ld, old_ptr=%ld)\n",
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substream->stream, (long)pos,
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(long)old_hw_ptr);
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return 0;
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}
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runtime->hw_ptr_base += runtime->buffer_size;
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if (runtime->hw_ptr_base == runtime->boundary)
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runtime->hw_ptr_base = 0;
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new_hw_ptr = runtime->hw_ptr_base + pos;
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hw_base += runtime->buffer_size;
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if (hw_base >= runtime->boundary)
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hw_base = 0;
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new_hw_ptr = hw_base + pos;
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}
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if (delta > runtime->period_size && runtime->periods > 1) {
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hw_ptr_error(substream,
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"hw_ptr skipping! "
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"(pos=%ld, delta=%ld, period=%ld)\n",
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(long)pos, (long)delta,
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(long)runtime->period_size);
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return 0;
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}
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
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runtime->silence_size > 0)
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snd_pcm_playback_silence(substream, new_hw_ptr);
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runtime->hw_ptr_base = hw_base;
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runtime->status->hw_ptr = new_hw_ptr;
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return snd_pcm_update_hw_ptr_post(substream, runtime);
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@ -85,25 +85,19 @@ static unsigned long snd_pcm_timer_resolution(struct snd_timer * timer)
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static int snd_pcm_timer_start(struct snd_timer * timer)
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{
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unsigned long flags;
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struct snd_pcm_substream *substream;
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substream = snd_timer_chip(timer);
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spin_lock_irqsave(&substream->timer_lock, flags);
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substream->timer_running = 1;
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spin_unlock_irqrestore(&substream->timer_lock, flags);
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return 0;
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}
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static int snd_pcm_timer_stop(struct snd_timer * timer)
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{
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unsigned long flags;
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struct snd_pcm_substream *substream;
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substream = snd_timer_chip(timer);
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spin_lock_irqsave(&substream->timer_lock, flags);
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substream->timer_running = 0;
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spin_unlock_irqrestore(&substream->timer_lock, flags);
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return 0;
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}
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