diff options
| -rw-r--r-- | sound/drivers/aloop.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c index 838ad86311b8..66786ea6f480 100644 --- a/sound/drivers/aloop.c +++ b/sound/drivers/aloop.c @@ -39,6 +39,7 @@ #include <sound/core.h> #include <sound/control.h> #include <sound/pcm.h> +#include <sound/info.h> #include <sound/initval.h> MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); @@ -184,6 +185,7 @@ static void loopback_timer_start(struct loopback_pcm *dpcm) static inline void loopback_timer_stop(struct loopback_pcm *dpcm) { del_timer(&dpcm->timer); + dpcm->timer.expires = 0; } #define CABLE_VALID_PLAYBACK (1 << SNDRV_PCM_STREAM_PLAYBACK) @@ -1011,6 +1013,86 @@ static int __devinit loopback_mixer_new(struct loopback *loopback, int notify) return 0; } +#ifdef CONFIG_PROC_FS + +static void print_dpcm_info(struct snd_info_buffer *buffer, + struct loopback_pcm *dpcm, + const char *id) +{ + snd_iprintf(buffer, " %s\n", id); + if (dpcm == NULL) { + snd_iprintf(buffer, " inactive\n"); + return; + } + snd_iprintf(buffer, " buffer_size:\t%u\n", dpcm->pcm_buffer_size); + snd_iprintf(buffer, " buffer_pos:\t\t%u\n", dpcm->buf_pos); + snd_iprintf(buffer, " silent_size:\t%u\n", dpcm->silent_size); + snd_iprintf(buffer, " period_size:\t%u\n", dpcm->pcm_period_size); + snd_iprintf(buffer, " bytes_per_sec:\t%u\n", dpcm->pcm_bps); + snd_iprintf(buffer, " sample_align:\t%u\n", dpcm->pcm_salign); + snd_iprintf(buffer, " rate_shift:\t\t%u\n", dpcm->pcm_rate_shift); + snd_iprintf(buffer, " update_pending:\t%u\n", + dpcm->period_update_pending); + snd_iprintf(buffer, " irq_pos:\t\t%u\n", dpcm->irq_pos); + snd_iprintf(buffer, " period_frac:\t%u\n", dpcm->period_size_frac); + snd_iprintf(buffer, " last_jiffies:\t%lu (%lu)\n", + dpcm->last_jiffies, jiffies); + snd_iprintf(buffer, " timer_expires:\t%lu\n", dpcm->timer.expires); +} + +static void print_substream_info(struct snd_info_buffer *buffer, + struct loopback *loopback, + int sub, + int num) +{ + struct loopback_cable *cable = loopback->cables[sub][num]; + + snd_iprintf(buffer, "Cable %i substream %i:\n", num, sub); + if (cable == NULL) { + snd_iprintf(buffer, " inactive\n"); + return; + } + snd_iprintf(buffer, " valid: %u\n", cable->valid); + snd_iprintf(buffer, " running: %u\n", cable->running); + print_dpcm_info(buffer, cable->streams[0], "Playback"); + print_dpcm_info(buffer, cable->streams[1], "Capture"); +} + +static void print_cable_info(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct loopback *loopback = entry->private_data; + int sub, num; + + mutex_lock(&loopback->cable_lock); + num = entry->name[strlen(entry->name)-1]; + num = num == '0' ? 0 : 1; + for (sub = 0; sub < MAX_PCM_SUBSTREAMS; sub++) + print_substream_info(buffer, loopback, sub, num); + mutex_unlock(&loopback->cable_lock); +} + +static int __devinit loopback_proc_new(struct loopback *loopback, int cidx) +{ + char name[32]; + struct snd_info_entry *entry; + int err; + + snprintf(name, sizeof(name), "cable#%d", cidx); + err = snd_card_proc_new(loopback->card, name, &entry); + if (err < 0) + return err; + + snd_info_set_text_ops(entry, loopback, print_cable_info); + return 0; +} + +#else /* !CONFIG_PROC_FS */ + +#define loopback_proc_new(loopback, cidx) do { } while (0) + +#endif + static int __devinit loopback_probe(struct platform_device *devptr) { struct snd_card *card; @@ -1041,6 +1123,8 @@ static int __devinit loopback_probe(struct platform_device *devptr) err = loopback_mixer_new(loopback, pcm_notify[dev] ? 1 : 0); if (err < 0) goto __nodev; + loopback_proc_new(loopback, 0); + loopback_proc_new(loopback, 1); strcpy(card->driver, "Loopback"); strcpy(card->shortname, "Loopback"); sprintf(card->longname, "Loopback %i", dev + 1); |