From 02886077118aa7792991cec0e6e82a17a760cf62 Mon Sep 17 00:00:00 2001 From: Nikhil Mahale Date: Tue, 4 Feb 2020 15:57:46 +0530 Subject: [PATCH] ALSA: hda - Fix DP-MST support for NVIDIA codecs If dyn_pcm_assign is set, different jack objects are being created for pcm and pins. If dyn_pcm_assign is set, generic_hdmi_build_jack() calls into add_hdmi_jack_kctl() to create and track separate jack object for pcm. Like sync_eld_via_acomp(), hdmi_present_sense_via_verbs() also need to report status change of the pcm jack. Rename pin_idx_to_jack() to pin_idx_to_pcm_jack(). Update hdmi_present_sense_via_verbs() to report plug state of pcm jack object. Unlike sync_eld_via_acomp(), for !acomp drivers the pcm jack's plug state must be consistent with plug state of pin's jack. Fixes: 8452384ea91b ("ALSA: hda - Add DP-MST support for NVIDIA codecs") Reported-and-tested-by: Martin Regner Signed-off-by: Nikhil Mahale Reviewed-by: Kai Vehmanen Cc: Link: https://lore.kernel.org/r/20200204102746.1356-1-nmahale@nvidia.com Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_hdmi.c | 94 +++++++++++++++++++++++++------------- 1 file changed, 63 insertions(+), 31 deletions(-) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 7c006f9858c06..5119a9ae3d8a5 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1550,6 +1550,34 @@ static bool update_eld(struct hda_codec *codec, return eld_changed; } +static struct snd_jack *pin_idx_to_pcm_jack(struct hda_codec *codec, + struct hdmi_spec_per_pin *per_pin) +{ + struct hdmi_spec *spec = codec->spec; + struct snd_jack *jack = NULL; + struct hda_jack_tbl *jack_tbl; + + /* if !dyn_pcm_assign, get jack from hda_jack_tbl + * in !dyn_pcm_assign case, spec->pcm_rec[].jack is not + * NULL even after snd_hda_jack_tbl_clear() is called to + * free snd_jack. This may cause access invalid memory + * when calling snd_jack_report + */ + if (per_pin->pcm_idx >= 0 && spec->dyn_pcm_assign) { + jack = spec->pcm_rec[per_pin->pcm_idx].jack; + } else if (!spec->dyn_pcm_assign) { + /* + * jack tbl doesn't support DP MST + * DP MST will use dyn_pcm_assign, + * so DP MST will never come here + */ + jack_tbl = snd_hda_jack_tbl_get_mst(codec, per_pin->pin_nid, + per_pin->dev_id); + if (jack_tbl) + jack = jack_tbl->jack; + } + return jack; +} /* update ELD and jack state via HD-audio verbs */ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin, int repoll) @@ -1571,6 +1599,7 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin, int present; bool ret; bool do_repoll = false; + struct snd_jack *pcm_jack = NULL; present = snd_hda_jack_pin_sense(codec, pin_nid, dev_id); @@ -1598,10 +1627,19 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin, do_repoll = true; } - if (do_repoll) + if (do_repoll) { schedule_delayed_work(&per_pin->work, msecs_to_jiffies(300)); - else + } else { + /* + * pcm_idx >=0 before update_eld() means it is in monitor + * disconnected event. Jack must be fetched before + * update_eld(). + */ + pcm_jack = pin_idx_to_pcm_jack(codec, per_pin); update_eld(codec, per_pin, eld); + if (!pcm_jack) + pcm_jack = pin_idx_to_pcm_jack(codec, per_pin); + } ret = !repoll || !eld->monitor_present || eld->eld_valid; @@ -1610,38 +1648,32 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin, jack->block_report = !ret; jack->pin_sense = (eld->monitor_present && eld->eld_valid) ? AC_PINSENSE_PRESENCE : 0; - } - mutex_unlock(&per_pin->lock); - return ret; -} -static struct snd_jack *pin_idx_to_jack(struct hda_codec *codec, - struct hdmi_spec_per_pin *per_pin) -{ - struct hdmi_spec *spec = codec->spec; - struct snd_jack *jack = NULL; - struct hda_jack_tbl *jack_tbl; + if (spec->dyn_pcm_assign && pcm_jack && !do_repoll) { + int state = 0; + + if (jack->pin_sense & AC_PINSENSE_PRESENCE) + state = SND_JACK_AVOUT; + snd_jack_report(pcm_jack, state); + } - /* if !dyn_pcm_assign, get jack from hda_jack_tbl - * in !dyn_pcm_assign case, spec->pcm_rec[].jack is not - * NULL even after snd_hda_jack_tbl_clear() is called to - * free snd_jack. This may cause access invalid memory - * when calling snd_jack_report - */ - if (per_pin->pcm_idx >= 0 && spec->dyn_pcm_assign) - jack = spec->pcm_rec[per_pin->pcm_idx].jack; - else if (!spec->dyn_pcm_assign) { /* - * jack tbl doesn't support DP MST - * DP MST will use dyn_pcm_assign, - * so DP MST will never come here + * snd_hda_jack_pin_sense() call at the beginning of this + * function, updates jack->pins_sense and clears + * jack->jack_dirty, therefore snd_hda_jack_report_sync() will + * not override the jack->pin_sense. + * + * snd_hda_jack_report_sync() is superfluous for dyn_pcm_assign + * case. The jack->pin_sense update was already performed, and + * hda_jack->jack is NULL for dyn_pcm_assign. + * + * Don't call snd_hda_jack_report_sync() for + * dyn_pcm_assign. */ - jack_tbl = snd_hda_jack_tbl_get_mst(codec, per_pin->pin_nid, - per_pin->dev_id); - if (jack_tbl) - jack = jack_tbl->jack; + ret = ret && !spec->dyn_pcm_assign; } - return jack; + mutex_unlock(&per_pin->lock); + return ret; } /* update ELD and jack state via audio component */ @@ -1677,10 +1709,10 @@ static void sync_eld_via_acomp(struct hda_codec *codec, /* pcm_idx >=0 before update_eld() means it is in monitor * disconnected event. Jack must be fetched before update_eld() */ - jack = pin_idx_to_jack(codec, per_pin); + jack = pin_idx_to_pcm_jack(codec, per_pin); changed = update_eld(codec, per_pin, eld); if (jack == NULL) - jack = pin_idx_to_jack(codec, per_pin); + jack = pin_idx_to_pcm_jack(codec, per_pin); if (changed && jack) snd_jack_report(jack, (eld->monitor_present && eld->eld_valid) ? -- 2.39.5