diff options
Diffstat (limited to 'sound/hda/hdac_bus.c')
| -rw-r--r-- | sound/hda/hdac_bus.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/sound/hda/hdac_bus.c b/sound/hda/hdac_bus.c index 8e262da74f6a..27c447e4fe5c 100644 --- a/sound/hda/hdac_bus.c +++ b/sound/hda/hdac_bus.c @@ -11,21 +11,36 @@ static void process_unsol_events(struct work_struct *work); +static const struct hdac_bus_ops default_ops = { + .command = snd_hdac_bus_send_cmd, + .get_response = snd_hdac_bus_get_response, +}; + /** * snd_hdac_bus_init - initialize a HD-audio bas bus * @bus: the pointer to bus object + * @ops: bus verb operators + * @io_ops: lowlevel I/O operators * * Returns 0 if successful, or a negative error code. */ int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev, - const struct hdac_bus_ops *ops) + const struct hdac_bus_ops *ops, + const struct hdac_io_ops *io_ops) { memset(bus, 0, sizeof(*bus)); bus->dev = dev; - bus->ops = ops; + if (ops) + bus->ops = ops; + else + bus->ops = &default_ops; + bus->io_ops = io_ops; + INIT_LIST_HEAD(&bus->stream_list); INIT_LIST_HEAD(&bus->codec_list); INIT_WORK(&bus->unsol_work, process_unsol_events); + spin_lock_init(&bus->reg_lock); mutex_init(&bus->cmd_mutex); + bus->irq = -1; return 0; } EXPORT_SYMBOL_GPL(snd_hdac_bus_init); @@ -36,6 +51,7 @@ EXPORT_SYMBOL_GPL(snd_hdac_bus_init); */ void snd_hdac_bus_exit(struct hdac_bus *bus) { + WARN_ON(!list_empty(&bus->stream_list)); WARN_ON(!list_empty(&bus->codec_list)); cancel_work_sync(&bus->unsol_work); } |