From mboxrd@z Thu Jan 1 00:00:00 1970 From: libin.yang@linux.intel.com Subject: [RFC V2 PATCH 1/5] ALSA: hda - hdmi playback without monitor in dynamic pcm bind mode Date: Mon, 23 Nov 2015 22:09:30 +0800 Message-ID: <1448287774-146673-3-git-send-email-libin.yang@linux.intel.com> References: <1448287774-146673-1-git-send-email-libin.yang@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by alsa0.perex.cz (Postfix) with ESMTP id E0A3E265357 for ; Mon, 23 Nov 2015 15:12:26 +0100 (CET) In-Reply-To: <1448287774-146673-1-git-send-email-libin.yang@linux.intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org, tiwai@suse.de Cc: libin.yang@intel.com, Libin Yang , mengdong.lin@linux.intel.com List-Id: alsa-devel@alsa-project.org From: Libin Yang Pulseaudio requires open pcm successfully when probing. This patch handles playback without monitor in dynamic pcm assignment mode. It tries to open/prepare/close pcm successfully even there is no pin bound to the PCM. On the meantime, it will try to find a proper converter for the PCM. Signed-off-by: Libin Yang --- sound/pci/hda/patch_hdmi.c | 171 +++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 157 insertions(+), 14 deletions(-) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 92e05fb..d0294bf 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -135,6 +135,7 @@ struct hdmi_spec { int num_pins; struct snd_array pins; /* struct hdmi_spec_per_pin */ struct hda_pcm *pcm_rec[16]; + struct mutex pcm_lock; unsigned int channels_max; /* max over all cvts */ struct hdmi_eld temp_eld; @@ -1331,6 +1332,11 @@ static int hdmi_setup_stream(struct hda_codec *codec, hda_nid_t cvt_nid, return 0; } +/* Try to find an available converter + * If pin_idx is less then zero, just try to find an available converter. + * Otherwise, try to find an available converter and get the cvt mux index + * of the pin. + */ static int hdmi_choose_cvt(struct hda_codec *codec, int pin_idx, int *cvt_id, int *mux_id) { @@ -1339,7 +1345,11 @@ static int hdmi_choose_cvt(struct hda_codec *codec, struct hdmi_spec_per_cvt *per_cvt = NULL; int cvt_idx, mux_idx = 0; - per_pin = get_pin(spec, pin_idx); + /* pin_idx < 0 means no pin will be bound to the converter */ + if (pin_idx < 0) + per_pin = NULL; + else + per_pin = get_pin(spec, pin_idx); /* Dynamically assign converter to stream */ for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) { @@ -1348,6 +1358,8 @@ static int hdmi_choose_cvt(struct hda_codec *codec, /* Must not already be assigned */ if (per_cvt->assigned) continue; + if (per_pin == NULL) + break; /* Must be in pin's mux's list of converters */ for (mux_idx = 0; mux_idx < per_pin->num_mux_nids; mux_idx++) if (per_pin->mux_nids[mux_idx] == per_cvt->cvt_nid) @@ -1360,9 +1372,10 @@ static int hdmi_choose_cvt(struct hda_codec *codec, /* No free converters */ if (cvt_idx == spec->num_cvts) - return -ENODEV; + return -EBUSY; - per_pin->mux_idx = mux_idx; + if (per_pin != NULL) + per_pin->mux_idx = mux_idx; if (cvt_id) *cvt_id = cvt_idx; @@ -1388,6 +1401,20 @@ static void intel_verify_pin_cvt_connect(struct hda_codec *codec, mux_idx); } +/* get the mux index for the converter of the pins + * converter's mux index is the same for all pins on Intel platform + */ +static int intel_cvt_id_to_mux_idx(struct hdmi_spec *spec, + hda_nid_t cvt_nid) +{ + int i; + + for (i = 0; i < spec->num_cvts; i++) + if (spec->cvt_nids[i] == cvt_nid) + return i; + return -EINVAL; +} + /* Intel HDMI workaround to fix audio routing issue: * For some Intel display codecs, pins share the same connection list. * So a conveter can be selected by multiple pins and playback on any of these @@ -1439,6 +1466,69 @@ static void intel_not_share_assigned_cvt(struct hda_codec *codec, } } +/* A wrapper of intel_not_share_asigned_cvt() */ +static void intel_not_share_assigned_cvt_nid(struct hda_codec *codec, + hda_nid_t pin_nid, hda_nid_t cvt_nid) +{ + int mux_idx; + struct hdmi_spec *spec = codec->spec; + + if (!is_haswell_plus(codec) && !is_valleyview_plus(codec)) + return; + + /* On Intel platform, the mapping of converter nid to + * mux index of the pins are always the same. + * The pin nid may be 0, this means all pins will not + * share the converter. + */ + mux_idx = intel_cvt_id_to_mux_idx(spec, cvt_nid); + if (mux_idx > 0) + intel_not_share_assigned_cvt(codec, pin_nid, mux_idx); +} + +/* called in hdmi_pcm_open when no pin is assigned to the PCM + * in dyn_pcm_assign mode. + */ +static int hdmi_pcm_open_no_pin(struct hda_pcm_stream *hinfo, + struct hda_codec *codec, + struct snd_pcm_substream *substream) +{ + struct hdmi_spec *spec = codec->spec; + struct snd_pcm_runtime *runtime = substream->runtime; + int cvt_idx; + struct hdmi_spec_per_cvt *per_cvt = NULL; + int err; + + err = hdmi_choose_cvt(codec, -1, &cvt_idx, NULL); + if (err) + return err; + + per_cvt = get_cvt(spec, cvt_idx); + per_cvt->assigned = 1; + hinfo->nid = per_cvt->cvt_nid; + + intel_not_share_assigned_cvt_nid(codec, 0, per_cvt->cvt_nid); + + /* todo: setup spdif ctls assign */ + + /* Initially set the converter's capabilities */ + hinfo->channels_min = per_cvt->channels_min; + hinfo->channels_max = per_cvt->channels_max; + hinfo->rates = per_cvt->rates; + hinfo->formats = per_cvt->formats; + hinfo->maxbps = per_cvt->maxbps; + + /* Store the updated parameters */ + runtime->hw.channels_min = hinfo->channels_min; + runtime->hw.channels_max = hinfo->channels_max; + runtime->hw.formats = hinfo->formats; + runtime->hw.rates = hinfo->rates; + + snd_pcm_hw_constraint_step(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, 2); + return 0; +} + /* * HDA PCM callbacks */ @@ -1455,19 +1545,36 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo, int err; /* Validate hinfo */ + mutex_lock(&spec->pcm_lock); pin_idx = hinfo_to_pin_index(codec, hinfo); - if (snd_BUG_ON(pin_idx < 0)) - return -EINVAL; - per_pin = get_pin(spec, pin_idx); - eld = &per_pin->sink_eld; + if (!spec->dyn_pcm_assign) { + if (snd_BUG_ON(pin_idx < 0)) { + mutex_unlock(&spec->pcm_lock); + return -EINVAL; + } + } else { + /* no pin is assigned to the PCM + * PA need pcm open successfully when probe + */ + if (pin_idx < 0) { + err = hdmi_pcm_open_no_pin(hinfo, codec, substream); + mutex_unlock(&spec->pcm_lock); + return err; + } + } err = hdmi_choose_cvt(codec, pin_idx, &cvt_idx, &mux_idx); - if (err < 0) + if (err < 0) { + mutex_unlock(&spec->pcm_lock); return err; + } per_cvt = get_cvt(spec, cvt_idx); /* Claim converter */ per_cvt->assigned = 1; + + + per_pin = get_pin(spec, pin_idx); per_pin->cvt_nid = per_cvt->cvt_nid; hinfo->nid = per_cvt->cvt_nid; @@ -1488,6 +1595,7 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo, hinfo->formats = per_cvt->formats; hinfo->maxbps = per_cvt->maxbps; + eld = &per_pin->sink_eld; /* Restrict capabilities by ELD if this isn't disabled */ if (!static_hdmi_pcm && eld->eld_valid) { snd_hdmi_eld_update_pcm_info(&eld->info, hinfo); @@ -1496,10 +1604,12 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo, per_cvt->assigned = 0; hinfo->nid = 0; snd_hda_spdif_ctls_unassign(codec, pin_idx); + mutex_unlock(&spec->pcm_lock); return -ENODEV; } } + mutex_unlock(&spec->pcm_lock); /* Store the updated parameters */ runtime->hw.channels_min = hinfo->channels_min; runtime->hw.channels_max = hinfo->channels_max; @@ -1803,13 +1913,33 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, { hda_nid_t cvt_nid = hinfo->nid; struct hdmi_spec *spec = codec->spec; - int pin_idx = hinfo_to_pin_index(codec, hinfo); - struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx); - hda_nid_t pin_nid = per_pin->pin_nid; + int pin_idx; + struct hdmi_spec_per_pin *per_pin; + hda_nid_t pin_nid; struct snd_pcm_runtime *runtime = substream->runtime; struct i915_audio_component *acomp = codec->bus->core.audio_component; bool non_pcm; int pinctl; + int err; + + mutex_lock(&spec->pcm_lock); + pin_idx = hinfo_to_pin_index(codec, hinfo); + if (spec->dyn_pcm_assign && pin_idx < 0) { + /* when dyn_pcm_assign and pcm is not bound to a pin + * skip pin setup and return 0 to make audio playback + * be ongoing + */ + intel_not_share_assigned_cvt_nid(codec, 0, cvt_nid); + snd_hda_codec_setup_stream(codec, cvt_nid, + stream_tag, 0, format); + mutex_unlock(&spec->pcm_lock); + return 0; + } + + if (snd_BUG_ON(pin_idx < 0)) + return -EINVAL; + per_pin = get_pin(spec, pin_idx); + pin_nid = per_pin->pin_nid; if (is_haswell_plus(codec) || is_valleyview_plus(codec)) { /* Verify pin:cvt selections to avoid silent audio after S3. @@ -1838,7 +1968,7 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, hdmi_setup_audio_infoframe(codec, per_pin, non_pcm); mutex_unlock(&per_pin->lock); - + mutex_unlock(&spec->pcm_lock); if (spec->dyn_pin_out) { pinctl = snd_hda_codec_read(codec, pin_nid, 0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0); @@ -1847,7 +1977,10 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, pinctl | PIN_OUT); } - return spec->ops.setup_stream(codec, cvt_nid, pin_nid, stream_tag, format); + err = spec->ops.setup_stream(codec, cvt_nid, pin_nid, + stream_tag, format); + mutex_unlock(&spec->pcm_lock); + return err; } static int generic_hdmi_playback_pcm_cleanup(struct hda_pcm_stream *hinfo, @@ -1878,9 +2011,17 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo, per_cvt->assigned = 0; hinfo->nid = 0; + mutex_lock(&spec->pcm_lock); pin_idx = hinfo_to_pin_index(codec, hinfo); - if (snd_BUG_ON(pin_idx < 0)) + if (spec->dyn_pcm_assign && pin_idx < 0) { + mutex_unlock(&spec->pcm_lock); + return 0; + } + + if (snd_BUG_ON(pin_idx < 0)) { + mutex_unlock(&spec->pcm_lock); return -EINVAL; + } per_pin = get_pin(spec, pin_idx); if (spec->dyn_pin_out) { @@ -1900,6 +2041,7 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo, per_pin->setup = false; per_pin->channels = 0; mutex_unlock(&per_pin->lock); + mutex_unlock(&spec->pcm_lock); } return 0; @@ -2370,6 +2512,7 @@ static int patch_generic_hdmi(struct hda_codec *codec) return -ENOMEM; spec->ops = generic_standard_hdmi_ops; + mutex_init(&spec->pcm_lock); codec->spec = spec; hdmi_array_init(spec, 4); -- 1.9.1