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| author | David Henningsson <david.henningsson@canonical.com> | 2013-02-19 16:11:26 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-02-19 18:28:38 +0100 |
| commit | 92c69e796b83f922c81a5cf7968cb114a7fa14c6 (patch) | |
| tree | 1a6612d2e6e27d5e588b67dfbc70d76446dd2e4c | |
| parent | 4bd038f9d80216a6e95c5c36fae5054a83ea75d7 (diff) | |
| download | lwn-92c69e796b83f922c81a5cf7968cb114a7fa14c6.tar.gz lwn-92c69e796b83f922c81a5cf7968cb114a7fa14c6.zip | |
ALSA: hda - hdmi: Notify userspace when ELD control changes
ELD validity can change during the lifetime of a presence detect,
so we need to be able to listen for changes on the ELD control.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/pci/hda/patch_hdmi.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index e77735d804a3..21425fb51fe0 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -75,6 +75,7 @@ struct hdmi_spec_per_pin { struct hda_codec *codec; struct hdmi_eld sink_eld; struct delayed_work work; + struct snd_kcontrol *eld_ctl; int repoll_count; bool non_pcm; bool chmap_set; /* channel-map override by ALSA API? */ @@ -413,6 +414,7 @@ static int hdmi_create_eld_ctl(struct hda_codec *codec, int pin_idx, if (err < 0) return err; + spec->pins[pin_idx].eld_ctl = kctl; return 0; } @@ -1220,11 +1222,14 @@ static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll) } mutex_lock(&pin_eld->lock); - if (pin_eld->eld_valid && !eld->eld_valid) + if (pin_eld->eld_valid && !eld->eld_valid) { update_eld = true; + eld_changed = true; + } if (update_eld) { pin_eld->eld_valid = eld->eld_valid; - eld_changed = memcmp(pin_eld->eld_buffer, eld->eld_buffer, + eld_changed = pin_eld->eld_size != eld->eld_size || + memcmp(pin_eld->eld_buffer, eld->eld_buffer, eld->eld_size) != 0; if (eld_changed) memcpy(pin_eld->eld_buffer, eld->eld_buffer, @@ -1233,6 +1238,11 @@ static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll) pin_eld->info = eld->info; } mutex_unlock(&pin_eld->lock); + + if (eld_changed) + snd_ctl_notify(codec->bus->card, + SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO, + &per_pin->eld_ctl->id); } static void hdmi_repoll_eld(struct work_struct *work) |