xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ALSA: oxfw: add MIDI playback port for SCS.1 models

Browse Source 
This commit adds MIDI playback ports so that scs1x driver has.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto
2015-12-22 09:15:44 +09:00
committed by Takashi Iwai
parent d7d20e7781
commit 6f5dcb28df
1 changed files with 45 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
sound/firewire/oxfw/oxfw-scs1x.c
View File

@@ -290,6 +290,45 @@ static struct snd_rawmidi_ops midi_capture_ops = {
.trigger = midi_capture_trigger, .trigger = midi_capture_trigger,
}; };
static int midi_playback_open(struct snd_rawmidi_substream *stream)
{
return 0;
}
static int midi_playback_close(struct snd_rawmidi_substream *stream)
{
return 0;
}
static void midi_playback_trigger(struct snd_rawmidi_substream *stream, int up)
{
struct fw_scs1x *scs = stream->rmidi->private_data;
if (up) {
scs->output_status = 0;
scs->output_bytes = 1;
scs->output_escaped = false;
scs->output_idle = false;
ACCESS_ONCE(scs->output) = stream;
tasklet_schedule(&scs->tasklet);
} else {
ACCESS_ONCE(scs->output) = NULL;
}
}
static void midi_playback_drain(struct snd_rawmidi_substream *stream)
{
struct fw_scs1x *scs = stream->rmidi->private_data;
wait_event(scs->idle_wait, scs->output_idle);
}
static struct snd_rawmidi_ops midi_playback_ops = {
.open = midi_playback_open,
.close = midi_playback_close,
.trigger = midi_playback_trigger,
.drain = midi_playback_drain,
};
static int register_address(struct snd_oxfw *oxfw) static int register_address(struct snd_oxfw *oxfw)
{ {
struct fw_scs1x *scs = oxfw->spec; struct fw_scs1x *scs = oxfw->spec;
@@ -339,7 +378,7 @@ int snd_oxfw_scs1x_add(struct snd_oxfw *oxfw)
goto err_allocated; goto err_allocated;
/* Use unique name for backward compatibility to scs1x module. */ /* Use unique name for backward compatibility to scs1x module. */
err = snd_rawmidi_new(oxfw->card, "SCS.1x", 0, 0, 1, &rmidi); err = snd_rawmidi_new(oxfw->card, "SCS.1x", 0, 1, 1, &rmidi);
if (err < 0) if (err < 0)
goto err_allocated; goto err_allocated;
rmidi->private_data = scs; rmidi->private_data = scs;
@@ -348,9 +387,13 @@ int snd_oxfw_scs1x_add(struct snd_oxfw *oxfw)
snprintf(rmidi->name, sizeof(rmidi->name), snprintf(rmidi->name, sizeof(rmidi->name),
"%s MIDI", oxfw->card->shortname); "%s MIDI", oxfw->card->shortname);
rmidi->info_flags = SNDRV_RAWMIDI_INFO_INPUT; rmidi->info_flags = SNDRV_RAWMIDI_INFO_INPUT |
SNDRV_RAWMIDI_INFO_OUTPUT |
SNDRV_RAWMIDI_INFO_DUPLEX;
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
&midi_capture_ops); &midi_capture_ops);
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
&midi_playback_ops);
tasklet_init(&scs->tasklet, scs_output_tasklet, (unsigned long)scs); tasklet_init(&scs->tasklet, scs_output_tasklet, (unsigned long)scs);
init_waitqueue_head(&scs->idle_wait); init_waitqueue_head(&scs->idle_wait);