From e2dc7d7d8ed3019f72855af1c3dcda3fb456b488 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 1 Dec 2015 12:39:38 +0100 Subject: [PATCH] ALSA: hda - Move audio component accesses to hdac_i915.c A couple of i915_audio_component ops have been added and accessed directly from patch_hdmi.c. Ideally all these should be factored out into hdac_i915.c. This patch does it, adds two new helper functions for setting N/CTS and fetching ELD bytes. One bonus is that the hackish widget vs port mapping is also moved to hdac_i915.c, so that it can be fixed / enhanced more cleanly. Reviewed-by: Vinod Koul Signed-off-by: Takashi Iwai --- include/sound/hda_i915.h | 14 ++++++++ sound/hda/hdac_i915.c | 66 ++++++++++++++++++++++++++++++++++++ sound/pci/hda/patch_hdmi.c | 69 ++++++++++++++------------------------ 3 files changed, 106 insertions(+), 43 deletions(-) diff --git a/include/sound/hda_i915.h b/include/sound/hda_i915.h index 930b41e5acf4..fa341fcb5829 100644 --- a/include/sound/hda_i915.h +++ b/include/sound/hda_i915.h @@ -10,6 +10,9 @@ int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable); int snd_hdac_display_power(struct hdac_bus *bus, bool enable); int snd_hdac_get_display_clk(struct hdac_bus *bus); +int snd_hdac_sync_audio_rate(struct hdac_bus *bus, hda_nid_t nid, int rate); +int snd_hdac_acomp_get_eld(struct hdac_bus *bus, hda_nid_t nid, + bool *audio_enabled, char *buffer, int max_bytes); int snd_hdac_i915_init(struct hdac_bus *bus); int snd_hdac_i915_exit(struct hdac_bus *bus); int snd_hdac_i915_register_notifier(const struct i915_audio_component_audio_ops *); @@ -26,6 +29,17 @@ static inline int snd_hdac_get_display_clk(struct hdac_bus *bus) { return 0; } +static inline int snd_hdac_sync_audio_rate(struct hdac_bus *bus, hda_nid_t nid, + int rate) +{ + return 0; +} +static inline int snd_hdac_acomp_get_eld(struct hdac_bus *bus, hda_nid_t nid, + bool *audio_enabled, char *buffer, + int max_bytes) +{ + return -ENODEV; +} static inline int snd_hdac_i915_init(struct hdac_bus *bus) { return -ENODEV; diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c index 8fef1b8d1fd8..c50177fb469f 100644 --- a/sound/hda/hdac_i915.c +++ b/sound/hda/hdac_i915.c @@ -118,6 +118,72 @@ int snd_hdac_get_display_clk(struct hdac_bus *bus) } EXPORT_SYMBOL_GPL(snd_hdac_get_display_clk); +/* There is a fixed mapping between audio pin node and display port + * on current Intel platforms: + * Pin Widget 5 - PORT B (port = 1 in i915 driver) + * Pin Widget 6 - PORT C (port = 2 in i915 driver) + * Pin Widget 7 - PORT D (port = 3 in i915 driver) + */ +static int pin2port(hda_nid_t pin_nid) +{ + return pin_nid - 4; +} + +/** + * snd_hdac_sync_audio_rate - Set N/CTS based on the sample rate + * @bus: HDA core bus + * @nid: the pin widget NID + * @rate: the sample rate to set + * + * This function is supposed to be used only by a HD-audio controller + * driver that needs the interaction with i915 graphics. + * + * This function sets N/CTS value based on the given sample rate. + * Returns zero for success, or a negative error code. + */ +int snd_hdac_sync_audio_rate(struct hdac_bus *bus, hda_nid_t nid, int rate) +{ + struct i915_audio_component *acomp = bus->audio_component; + + if (!acomp || !acomp->ops || !acomp->ops->sync_audio_rate) + return -ENODEV; + return acomp->ops->sync_audio_rate(acomp->dev, pin2port(nid), rate); +} +EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate); + +/** + * snd_hdac_acomp_get_eld - Get the audio state and ELD via component + * @bus: HDA core bus + * @nid: the pin widget NID + * @audio_enabled: the pointer to store the current audio state + * @buffer: the buffer pointer to store ELD bytes + * @max_bytes: the max bytes to be stored on @buffer + * + * This function is supposed to be used only by a HD-audio controller + * driver that needs the interaction with i915 graphics. + * + * This function queries the current state of the audio on the given + * digital port and fetches the ELD bytes onto the given buffer. + * It returns the number of bytes for the total ELD data, zero for + * invalid ELD, or a negative error code. + * + * The return size is the total bytes required for the whole ELD bytes, + * thus it may be over @max_bytes. If it's over @max_bytes, it implies + * that only a part of ELD bytes have been fetched. + */ +int snd_hdac_acomp_get_eld(struct hdac_bus *bus, hda_nid_t nid, + bool *audio_enabled, char *buffer, int max_bytes) +{ + struct i915_audio_component *acomp = bus->audio_component; + + if (!acomp || !acomp->ops || !acomp->ops->get_eld) + return -ENODEV; + + return acomp->ops->get_eld(acomp->dev, pin2port(nid), audio_enabled, + buffer, max_bytes); +} +EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); + static int hdac_component_master_bind(struct device *dev) { struct i915_audio_component *acomp = hdac_acomp; diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index e91a3223fe5f..cd9b0ffc91dc 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1443,17 +1443,6 @@ static void intel_not_share_assigned_cvt(struct hda_codec *codec, } } -/* There is a fixed mapping between audio pin node and display port - * on current Intel platforms: - * Pin Widget 5 - PORT B (port = 1 in i915 driver) - * Pin Widget 6 - PORT C (port = 2 in i915 driver) - * Pin Widget 7 - PORT D (port = 3 in i915 driver) - */ -static int intel_pin2port(hda_nid_t pin_nid) -{ - return pin_nid - 4; -} - /* * HDA PCM callbacks */ @@ -1668,38 +1657,36 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin, static void sync_eld_via_acomp(struct hda_codec *codec, struct hdmi_spec_per_pin *per_pin) { - struct i915_audio_component *acomp = codec->bus->core.audio_component; struct hdmi_spec *spec = codec->spec; struct hdmi_eld *eld = &spec->temp_eld; int size; - if (acomp && acomp->ops && acomp->ops->get_eld) { - mutex_lock(&per_pin->lock); - size = acomp->ops->get_eld(acomp->dev, - intel_pin2port(per_pin->pin_nid), - &eld->monitor_present, - eld->eld_buffer, - ELD_MAX_SIZE); - if (size > 0) { - size = min(size, ELD_MAX_SIZE); - if (snd_hdmi_parse_eld(codec, &eld->info, - eld->eld_buffer, size) < 0) - size = -EINVAL; - } - - if (size > 0) { - eld->eld_valid = true; - eld->eld_size = size; - } else { - eld->eld_valid = false; - eld->eld_size = 0; - } - - update_eld(codec, per_pin, eld); - snd_jack_report(per_pin->acomp_jack, - eld->monitor_present ? SND_JACK_AVOUT : 0); - mutex_unlock(&per_pin->lock); + mutex_lock(&per_pin->lock); + size = snd_hdac_acomp_get_eld(&codec->bus->core, per_pin->pin_nid, + &eld->monitor_present, eld->eld_buffer, + ELD_MAX_SIZE); + if (size < 0) + goto unlock; + if (size > 0) { + size = min(size, ELD_MAX_SIZE); + if (snd_hdmi_parse_eld(codec, &eld->info, + eld->eld_buffer, size) < 0) + size = -EINVAL; } + + if (size > 0) { + eld->eld_valid = true; + eld->eld_size = size; + } else { + eld->eld_valid = false; + eld->eld_size = 0; + } + + update_eld(codec, per_pin, eld); + snd_jack_report(per_pin->acomp_jack, + eld->monitor_present ? SND_JACK_AVOUT : 0); + unlock: + mutex_unlock(&per_pin->lock); } static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll) @@ -1865,7 +1852,6 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx); hda_nid_t pin_nid = per_pin->pin_nid; struct snd_pcm_runtime *runtime = substream->runtime; - struct i915_audio_component *acomp = codec->bus->core.audio_component; bool non_pcm; int pinctl; @@ -1884,10 +1870,7 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ - if (acomp && acomp->ops && acomp->ops->sync_audio_rate) - acomp->ops->sync_audio_rate(acomp->dev, - intel_pin2port(pin_nid), - runtime->rate); + snd_hdac_sync_audio_rate(&codec->bus->core, pin_nid, runtime->rate); non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock);