diff options
Diffstat (limited to 'sound')
-rw-r--r-- | sound/usb/line6/capture.c | 5 | ||||
-rw-r--r-- | sound/usb/line6/driver.h | 4 | ||||
-rw-r--r-- | sound/usb/line6/pcm.c | 31 | ||||
-rw-r--r-- | sound/usb/line6/pcm.h | 4 | ||||
-rw-r--r-- | sound/usb/line6/toneport.c | 4 |
5 files changed, 37 insertions, 11 deletions
diff --git a/sound/usb/line6/capture.c b/sound/usb/line6/capture.c index 0228cb4..7c81256 100644 --- a/sound/usb/line6/capture.c +++ b/sound/usb/line6/capture.c @@ -232,6 +232,8 @@ static int snd_line6_capture_open(struct snd_pcm_substream *substream) if (err < 0) return err; + line6_pcm_acquire(line6pcm, LINE6_STREAM_CAPTURE_HELPER, false); + runtime->hw = line6pcm->properties->capture_hw; return 0; } @@ -239,6 +241,9 @@ static int snd_line6_capture_open(struct snd_pcm_substream *substream) /* close capture callback */ static int snd_line6_capture_close(struct snd_pcm_substream *substream) { + struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); + + line6_pcm_release(line6pcm, LINE6_STREAM_CAPTURE_HELPER); return 0; } diff --git a/sound/usb/line6/driver.h b/sound/usb/line6/driver.h index 2d32139..0bcab38 100644 --- a/sound/usb/line6/driver.h +++ b/sound/usb/line6/driver.h @@ -100,8 +100,10 @@ enum { LINE6_CAP_CONTROL = 1 << 0, /* device supports PCM input/output via USB */ LINE6_CAP_PCM = 1 << 1, - /* device support hardware monitoring */ + /* device supports hardware monitoring */ LINE6_CAP_HWMON = 1 << 2, + /* device requires output data when input is read */ + LINE6_CAP_IN_NEEDS_OUT = 1 << 3, }; /* diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c index a5a4430..fab53f5 100644 --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -52,7 +52,7 @@ static int snd_line6_impulse_volume_put(struct snd_kcontrol *kcontrol, line6pcm->impulse_volume = value; if (value > 0) { - err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE); + err = line6_pcm_acquire(line6pcm, LINE6_STREAM_IMPULSE, true); if (err < 0) { line6pcm->impulse_volume = 0; return err; @@ -242,6 +242,14 @@ int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd) switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: + if (s->stream == SNDRV_PCM_STREAM_CAPTURE && + (line6pcm->line6->properties->capabilities & + LINE6_CAP_IN_NEEDS_OUT)) { + err = line6_stream_start(line6pcm, SNDRV_PCM_STREAM_PLAYBACK, + LINE6_STREAM_CAPTURE_HELPER); + if (err < 0) + return err; + } err = line6_stream_start(line6pcm, s->stream, LINE6_STREAM_PCM); if (err < 0) @@ -250,6 +258,12 @@ int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd) case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: + if (s->stream == SNDRV_PCM_STREAM_CAPTURE && + (line6pcm->line6->properties->capabilities & + LINE6_CAP_IN_NEEDS_OUT)) { + line6_stream_stop(line6pcm, SNDRV_PCM_STREAM_PLAYBACK, + LINE6_STREAM_CAPTURE_HELPER); + } line6_stream_stop(line6pcm, s->stream, LINE6_STREAM_PCM); break; @@ -283,14 +297,15 @@ snd_pcm_uframes_t snd_line6_pointer(struct snd_pcm_substream *substream) return pstr->pos_done; } -/* Acquire and start duplex streams: +/* Acquire and optionally start duplex streams: * type is either LINE6_STREAM_IMPULSE or LINE6_STREAM_MONITOR */ -int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type) +int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type, bool start) { struct line6_pcm_stream *pstr; int ret = 0, dir; + /* TODO: We should assert SNDRV_PCM_STREAM_PLAYBACK/CAPTURE == 0/1 */ mutex_lock(&line6pcm->state_mutex); for (dir = 0; dir < 2; dir++) { pstr = get_stream(line6pcm, dir); @@ -300,10 +315,12 @@ int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type) if (!pstr->running) line6_wait_clear_audio_urbs(line6pcm, pstr); } - for (dir = 0; dir < 2; dir++) { - ret = line6_stream_start(line6pcm, dir, type); - if (ret < 0) - goto error; + if (start) { + for (dir = 0; dir < 2; dir++) { + ret = line6_stream_start(line6pcm, dir, type); + if (ret < 0) + goto error; + } } error: mutex_unlock(&line6pcm->state_mutex); diff --git a/sound/usb/line6/pcm.h b/sound/usb/line6/pcm.h index 67fda31..bb0c9cb 100644 --- a/sound/usb/line6/pcm.h +++ b/sound/usb/line6/pcm.h @@ -73,6 +73,7 @@ enum { LINE6_STREAM_PCM, LINE6_STREAM_MONITOR, LINE6_STREAM_IMPULSE, + LINE6_STREAM_CAPTURE_HELPER, }; /* misc bit flags for PCM operation */ @@ -191,7 +192,8 @@ extern int snd_line6_hw_params(struct snd_pcm_substream *substream, extern int snd_line6_hw_free(struct snd_pcm_substream *substream); extern snd_pcm_uframes_t snd_line6_pointer(struct snd_pcm_substream *substream); extern void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm); -extern int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type); +extern int line6_pcm_acquire(struct snd_line6_pcm *line6pcm, int type, + bool start); extern void line6_pcm_release(struct snd_line6_pcm *line6pcm, int type); #endif diff --git a/sound/usb/line6/toneport.c b/sound/usb/line6/toneport.c index da76e03..8e22f43 100644 --- a/sound/usb/line6/toneport.c +++ b/sound/usb/line6/toneport.c @@ -177,7 +177,7 @@ static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol, line6pcm->volume_monitor = ucontrol->value.integer.value[0]; if (line6pcm->volume_monitor > 0) { - err = line6_pcm_acquire(line6pcm, LINE6_STREAM_MONITOR); + err = line6_pcm_acquire(line6pcm, LINE6_STREAM_MONITOR, true); if (err < 0) { line6pcm->volume_monitor = 0; line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR); @@ -246,7 +246,7 @@ static void toneport_start_pcm(unsigned long arg) struct usb_line6_toneport *toneport = (struct usb_line6_toneport *)arg; struct usb_line6 *line6 = &toneport->line6; - line6_pcm_acquire(line6->line6pcm, LINE6_STREAM_MONITOR); + line6_pcm_acquire(line6->line6pcm, LINE6_STREAM_MONITOR, true); } /* control definition */ |