This lets interested codec(s) be notified of HDMI hotplug events sent from the i915 driver.
Signed-off-by: David Henningsson david.henningsson@canonical.com --- include/sound/hdaudio.h | 4 ++++ sound/hda/hdac_i915.c | 24 ++++++++++++++++++++++++ 2 files changed, 28 insertions(+)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index 4caf1fd..ce34182 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -79,6 +79,10 @@ struct hdac_device { int (*exec_verb)(struct hdac_device *dev, unsigned int cmd, unsigned int flags, unsigned int *res);
+ /* Used for hotplug notification from i915 driver */ + void (*hotplug_notify)(struct hdac_device *, + const struct i915_audio_hotplug_info *); + /* widgets */ unsigned int num_nodes; hda_nid_t start_nid, end_nid; diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index 5676b84..134ef9c 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -118,6 +118,8 @@ static void hdac_component_master_unbind(struct device *dev) { struct i915_audio_component *acomp = hdac_acomp;
+ acomp->cb_ops = NULL; + acomp->hdac_bus = NULL; module_put(acomp->ops->owner); component_unbind_all(dev, acomp); WARN_ON(acomp->ops || acomp->dev); @@ -128,6 +130,25 @@ static const struct component_master_ops hdac_component_master_ops = { .unbind = hdac_component_master_unbind, };
+static void i915_audio_component_hotplug_notify(struct hdac_bus *bus, + const struct i915_audio_hotplug_info *info) +{ + struct hdac_device *d; + + dev_dbg(bus->dev, "Received HDMI hotplug callback (connector = %d-%d, plugged in = %d)", + info->connector_type, info->connector_type_id, (int) info->plugged_in); + + list_for_each_entry(d, &bus->codec_list, list) { + if (d->hotplug_notify) + d->hotplug_notify(d, info); + } +} + +static const struct i915_audio_component_cb_ops i915_audio_component_cb_ops = { + .owner = THIS_MODULE, + .hotplug_notify = i915_audio_component_hotplug_notify, +}; + static int hdac_component_master_match(struct device *dev, void *data) { /* i915 is the only supported component */ @@ -163,6 +184,9 @@ int snd_hdac_i915_init(struct hdac_bus *bus) ret = -ENODEV; goto out_master_del; } + acomp->cb_ops = &i915_audio_component_cb_ops; + acomp->hdac_bus = bus; + dev_dbg(dev, "bound to i915 component master\n");
return 0;