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[media] em28xx: move fields wq_trigger and streaming_started from struct em28xx to struct em28xx_audio 

Both wq_trigger and stream_started are used only to control the em28xx
alsa streaming. They don't belong to em28xx common struct.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Frank Schaefer 2014-03-24 16:33:25 -03:00 committed by Mauro Carvalho Chehab
parent 3319e6f839
commit a5c075cfd2
2 changed files with 25 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/media/usb/em28xx/em28xx-audio.c
View File

@ -92,7 +92,7 @@ static void em28xx_audio_isocirq(struct urb *urb)
if (dev->disconnected) {
dprintk("device disconnected while streaming. URB status=%d.\n", urb->status);
atomic_set(&dev->stream_started, 0);
atomic_set(&dev->adev.stream_started, 0);
return;
}
@ -109,7 +109,7 @@ static void em28xx_audio_isocirq(struct urb *urb)
break;
}
if (atomic_read(&dev->stream_started) == 0)
if (atomic_read(&dev->adev.stream_started) == 0)
return;
if (dev->adev.capture_pcm_substream) {
@ -185,7 +185,7 @@ static int em28xx_init_audio_isoc(struct em28xx *dev)
em28xx_errdev("submit of audio urb failed (error=%i)\n",
errCode);
em28xx_deinit_isoc_audio(dev);
atomic_set(&dev->stream_started, 0);
atomic_set(&dev->adev.stream_started, 0);
return errCode;
}
@ -332,9 +332,9 @@ static int snd_em28xx_pcm_close(struct snd_pcm_substream *substream)
dev->mute = 1;
mutex_lock(&dev->lock);
dev->adev.users--;
if (atomic_read(&dev->stream_started) > 0) {
atomic_set(&dev->stream_started, 0);
schedule_work(&dev->wq_trigger);
if (atomic_read(&dev->adev.stream_started) > 0) {
atomic_set(&dev->adev.stream_started, 0);
schedule_work(&dev->adev.wq_trigger);
}
em28xx_audio_analog_set(dev);
@ -381,12 +381,13 @@ static int snd_em28xx_hw_capture_params(struct snd_pcm_substream *substream,
static int snd_em28xx_hw_capture_free(struct snd_pcm_substream *substream)
{
struct em28xx *dev = snd_pcm_substream_chip(substream);
struct em28xx_audio *adev = &dev->adev;
dprintk("Stop capture, if needed\n");
if (atomic_read(&dev->stream_started) > 0) {
atomic_set(&dev->stream_started, 0);
schedule_work(&dev->wq_trigger);
if (atomic_read(&adev->stream_started) > 0) {
atomic_set(&adev->stream_started, 0);
schedule_work(&adev->wq_trigger);
}
return 0;
@ -407,9 +408,11 @@ static int snd_em28xx_prepare(struct snd_pcm_substream *substream)
static void audio_trigger(struct work_struct *work)
{
struct em28xx *dev = container_of(work, struct em28xx, wq_trigger);
struct em28xx_audio *adev =
container_of(work, struct em28xx_audio, wq_trigger);
struct em28xx *dev = container_of(adev, struct em28xx, adev);
if (atomic_read(&dev->stream_started)) {
if (atomic_read(&adev->stream_started)) {
dprintk("starting capture");
em28xx_init_audio_isoc(dev);
} else {
@ -431,17 +434,17 @@ static int snd_em28xx_capture_trigger(struct snd_pcm_substream *substream,
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
case SNDRV_PCM_TRIGGER_START:
atomic_set(&dev->stream_started, 1);
atomic_set(&dev->adev.stream_started, 1);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
case SNDRV_PCM_TRIGGER_STOP:
atomic_set(&dev->stream_started, 0);
atomic_set(&dev->adev.stream_started, 0);
break;
default:
retval = -EINVAL;
}
schedule_work(&dev->wq_trigger);
schedule_work(&dev->adev.wq_trigger);
return retval;
}
@ -928,7 +931,7 @@ static int em28xx_audio_init(struct em28xx *dev)
strcpy(card->shortname, "Em28xx Audio");
strcpy(card->longname, "Empia Em28xx Audio");
INIT_WORK(&dev->wq_trigger, audio_trigger);
INIT_WORK(&adev->wq_trigger, audio_trigger);
if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
em28xx_cvol_new(card, dev, "Video", AC97_VIDEO);
@ -983,7 +986,7 @@ static int em28xx_audio_fini(struct em28xx *dev)
if (dev->adev.sndcard) {
snd_card_disconnect(dev->adev.sndcard);
flush_work(&dev->wq_trigger);
flush_work(&dev->adev.wq_trigger);
em28xx_audio_free_urb(dev);
@ -1005,7 +1008,7 @@ static int em28xx_audio_suspend(struct em28xx *dev)
em28xx_info("Suspending audio extension");
em28xx_deinit_isoc_audio(dev);
atomic_set(&dev->stream_started, 0);
atomic_set(&dev->adev.stream_started, 0);
return 0;
}
@ -1019,7 +1022,7 @@ static int em28xx_audio_resume(struct em28xx *dev)
em28xx_info("Resuming audio extension");
/* Nothing to do other than schedule_work() ?? */
schedule_work(&dev->wq_trigger);
schedule_work(&dev->adev.wq_trigger);
return 0;
}

8
drivers/media/usb/em28xx/em28xx.h
View File

@ -568,6 +568,10 @@ struct em28xx_audio {
int users;
spinlock_t slock;
/* Controls streaming */
struct work_struct wq_trigger; /* trigger to start/stop audio */
atomic_t stream_started; /* stream should be running if true */
};
struct em28xx;
@ -619,10 +623,6 @@ struct em28xx {
enum em28xx_sensor em28xx_sensor; /* camera specific */
/* Controls audio streaming */
struct work_struct wq_trigger; /* Trigger to start/stop audio for alsa module */
atomic_t stream_started; /* stream should be running if true */
/* Some older em28xx chips needs a waiting time after writing */
unsigned int wait_after_write;