diff options
Diffstat (limited to 'sound/hda')
| -rw-r--r-- | sound/hda/ext/hdac_ext_stream.c | 46 |
1 files changed, 28 insertions, 18 deletions
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c index 0c005d67fa89..37154ed43bd5 100644 --- a/sound/hda/ext/hdac_ext_stream.c +++ b/sound/hda/ext/hdac_ext_stream.c @@ -106,20 +106,14 @@ void snd_hdac_stream_free_all(struct hdac_bus *bus) } EXPORT_SYMBOL_GPL(snd_hdac_stream_free_all); -/** - * snd_hdac_ext_stream_decouple - decouple the hdac stream - * @bus: HD-audio core bus - * @stream: HD-audio ext core stream object to initialize - * @decouple: flag to decouple - */ -void snd_hdac_ext_stream_decouple(struct hdac_bus *bus, - struct hdac_ext_stream *stream, bool decouple) +void snd_hdac_ext_stream_decouple_locked(struct hdac_bus *bus, + struct hdac_ext_stream *stream, + bool decouple) { struct hdac_stream *hstream = &stream->hstream; u32 val; int mask = AZX_PPCTL_PROCEN(hstream->index); - spin_lock_irq(&bus->reg_lock); val = readw(bus->ppcap + AZX_REG_PP_PPCTL) & mask; if (decouple && !val) @@ -128,6 +122,20 @@ void snd_hdac_ext_stream_decouple(struct hdac_bus *bus, snd_hdac_updatel(bus->ppcap, AZX_REG_PP_PPCTL, mask, 0); stream->decoupled = decouple; +} +EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_decouple_locked); + +/** + * snd_hdac_ext_stream_decouple - decouple the hdac stream + * @bus: HD-audio core bus + * @stream: HD-audio ext core stream object to initialize + * @decouple: flag to decouple + */ +void snd_hdac_ext_stream_decouple(struct hdac_bus *bus, + struct hdac_ext_stream *stream, bool decouple) +{ + spin_lock_irq(&bus->reg_lock); + snd_hdac_ext_stream_decouple_locked(bus, stream, decouple); spin_unlock_irq(&bus->reg_lock); } EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_decouple); @@ -252,6 +260,7 @@ hdac_ext_link_stream_assign(struct hdac_bus *bus, return NULL; } + spin_lock_irq(&bus->reg_lock); list_for_each_entry(stream, &bus->stream_list, list) { struct hdac_ext_stream *hstream = container_of(stream, struct hdac_ext_stream, @@ -266,17 +275,16 @@ hdac_ext_link_stream_assign(struct hdac_bus *bus, } if (!hstream->link_locked) { - snd_hdac_ext_stream_decouple(bus, hstream, true); + snd_hdac_ext_stream_decouple_locked(bus, hstream, true); res = hstream; break; } } if (res) { - spin_lock_irq(&bus->reg_lock); res->link_locked = 1; res->link_substream = substream; - spin_unlock_irq(&bus->reg_lock); } + spin_unlock_irq(&bus->reg_lock); return res; } @@ -292,6 +300,7 @@ hdac_ext_host_stream_assign(struct hdac_bus *bus, return NULL; } + spin_lock_irq(&bus->reg_lock); list_for_each_entry(stream, &bus->stream_list, list) { struct hdac_ext_stream *hstream = container_of(stream, struct hdac_ext_stream, @@ -301,18 +310,17 @@ hdac_ext_host_stream_assign(struct hdac_bus *bus, if (!stream->opened) { if (!hstream->decoupled) - snd_hdac_ext_stream_decouple(bus, hstream, true); + snd_hdac_ext_stream_decouple_locked(bus, hstream, true); res = hstream; break; } } if (res) { - spin_lock_irq(&bus->reg_lock); res->hstream.opened = 1; res->hstream.running = 0; res->hstream.substream = substream; - spin_unlock_irq(&bus->reg_lock); } + spin_unlock_irq(&bus->reg_lock); return res; } @@ -378,15 +386,17 @@ void snd_hdac_ext_stream_release(struct hdac_ext_stream *stream, int type) break; case HDAC_EXT_STREAM_TYPE_HOST: + spin_lock_irq(&bus->reg_lock); if (stream->decoupled && !stream->link_locked) - snd_hdac_ext_stream_decouple(bus, stream, false); + snd_hdac_ext_stream_decouple_locked(bus, stream, false); + spin_unlock_irq(&bus->reg_lock); snd_hdac_stream_release(&stream->hstream); break; case HDAC_EXT_STREAM_TYPE_LINK: - if (stream->decoupled && !stream->hstream.opened) - snd_hdac_ext_stream_decouple(bus, stream, false); spin_lock_irq(&bus->reg_lock); + if (stream->decoupled && !stream->hstream.opened) + snd_hdac_ext_stream_decouple_locked(bus, stream, false); stream->link_locked = 0; stream->link_substream = NULL; spin_unlock_irq(&bus->reg_lock); |