Currently only PCM streams can enlist hdac_stream for their data transfer. Add cstream field to hdac_ext_stream to expose possibility of compress stream assignment in place of PCM one. Limited to HOST-type only.
Rather than copying entire hdac_ext_host_stream_assign, declare separate PCM and compress wrappers and reuse it for both cases.
Signed-off-by: Cezary Rojewski cezary.rojewski@intel.com --- include/sound/hdaudio.h | 1 + include/sound/hdaudio_ext.h | 2 ++ sound/hda/ext/hdac_ext_stream.c | 46 +++++++++++++++++++++++++++++---- 3 files changed, 44 insertions(+), 5 deletions(-)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index e05b95e83d5a..9a8bf1eb7d69 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -481,6 +481,7 @@ struct hdac_stream { struct snd_pcm_substream *substream; /* assigned substream, * set in PCM open */ + struct snd_compr_stream *cstream; unsigned int format_val; /* format value to be set in the * controller and the codec */ diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h index ef88b20c7b0a..ec01f2024f0b 100644 --- a/include/sound/hdaudio_ext.h +++ b/include/sound/hdaudio_ext.h @@ -84,6 +84,8 @@ int snd_hdac_ext_stream_init_all(struct hdac_bus *bus, int start_idx, int num_stream, int dir); void snd_hdac_stream_free_all(struct hdac_bus *bus); void snd_hdac_link_free_all(struct hdac_bus *bus); +struct hdac_ext_stream *snd_hdac_ext_cstream_assign(struct hdac_bus *bus, + struct snd_compr_stream *cstream); struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_bus *bus, struct snd_pcm_substream *substream, int type); diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c index 6b1b4b834bae..b898b6c0b55d 100644 --- a/sound/hda/ext/hdac_ext_stream.c +++ b/sound/hda/ext/hdac_ext_stream.c @@ -14,6 +14,7 @@ #include <sound/pcm.h> #include <sound/hda_register.h> #include <sound/hdaudio_ext.h> +#include <sound/compress_driver.h>
/** * snd_hdac_ext_stream_init - initialize each stream (aka device) @@ -281,8 +282,7 @@ hdac_ext_link_stream_assign(struct hdac_bus *bus, }
static struct hdac_ext_stream * -hdac_ext_host_stream_assign(struct hdac_bus *bus, - struct snd_pcm_substream *substream) +hdac_ext_host_stream_assign(struct hdac_bus *bus, int direction) { struct hdac_ext_stream *res = NULL; struct hdac_stream *stream = NULL; @@ -296,7 +296,7 @@ hdac_ext_host_stream_assign(struct hdac_bus *bus, struct hdac_ext_stream *hstream = container_of(stream, struct hdac_ext_stream, hstream); - if (stream->direction != substream->stream) + if (stream->direction != direction) continue;
if (!stream->opened) { @@ -310,13 +310,49 @@ hdac_ext_host_stream_assign(struct hdac_bus *bus, spin_lock_irq(&bus->reg_lock); res->hstream.opened = 1; res->hstream.running = 0; - res->hstream.substream = substream; + res->hstream.substream = NULL; + res->hstream.cstream = NULL; spin_unlock_irq(&bus->reg_lock); }
return res; }
+static struct hdac_ext_stream * +hdac_ext_host_stream_pcm_assign(struct hdac_bus *bus, + struct snd_pcm_substream *substream) +{ + struct hdac_ext_stream *res; + + res = hdac_ext_host_stream_assign(bus, substream->stream); + if (res) + res->hstream.substream = substream; + + return res; +} + +/** + * snd_hdac_ext_cstream_assign - assign a host stream for compress + * @bus: HD-audio core bus + * @cstream: Compress stream to assign + * + * Assign an unused host stream for the given compress stream. + * If no stream is free, NULL is returned. Stream is decoupled + * before assignment. + */ +struct hdac_ext_stream *snd_hdac_ext_cstream_assign(struct hdac_bus *bus, + struct snd_compr_stream *cstream) +{ + struct hdac_ext_stream *res; + + res = hdac_ext_host_stream_assign(bus, cstream->direction); + if (res) + res->hstream.cstream = cstream; + + return res; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_cstream_assign); + /** * snd_hdac_ext_stream_assign - assign a stream for the PCM * @bus: HD-audio core bus @@ -350,7 +386,7 @@ struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_bus *bus, return hstream;
case HDAC_EXT_STREAM_TYPE_HOST: - return hdac_ext_host_stream_assign(bus, substream); + return hdac_ext_host_stream_pcm_assign(bus, substream);
case HDAC_EXT_STREAM_TYPE_LINK: return hdac_ext_link_stream_assign(bus, substream);