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linux/include/sound
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Kai Vehmanen 2a2edfbbfe
ALSA: hda/hdmi - implement mst_no_extra_pcms flag 
To support the DP-MST multiple streams via single connector feature,
the HDMI driver was extended with the concept of backup PCMs. See
commit 9152085def ("ALSA: hda - add DP MST audio support").

This implementation works fine with snd_hda_intel.c as PCM topology
is fully managed within the single driver.

When the HDA codec driver is used from ASoC components, the concept
of backup PCMs no longer fits. For ASoC topologies, the physical
HDMI converters are presented as backend DAIs and these should match
with hardware capabilities. The ASoC topology may define arbitrary
PCMs (i.e. frontend DAIs) and have processing elements before eventual
routing to the HDMI BE DAIs. With backup PCMs, the link between
FE and BE DAIs would become dynamic and change when monitors are
(un)plugged. This would lead to modifying the topology every time
hotplug events happen, which is not currently possible in ASoC and
there does not seem to be any obvious benefits from this design.

To overcome above problems and enable the HDMI driver to be used
from ASoC, this patch adds a new mode (mst_no_extra_pcms flags) to
patch_hdmi.c. In this mode, the codec driver does not assume
the backup PCMs to be created.

Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191029134017.18901-2-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-29 17:31:30 +00:00
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ac97 ASoC: ac97: convert to SPDX identifiers 2018-07-02 10:56:09 +01:00
sof ASoC: SOF: ipc: introduce message for DSP power gating 2019-10-28 14:43:31 +00:00
ac97_codec.h ASoC: ac97: convert to SPDX identifiers 2018-07-02 10:56:09 +01:00
aci.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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ad1843.h
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aess.h ASoC: TI AESS: add autogating-enable function, callable from architecture code 2013-02-10 11:22:23 -07:00
ak4xxx-adda.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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alc5623.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
asequencer.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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compress_driver.h ALSA: compress: Fix regression on compressed capture streams 2019-07-23 12:07:22 +02:00
control.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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cs35l36.h ASoC: cs35l36: Add support for Cirrus CS35L36 Amplifier 2019-02-08 13:00:28 +00:00
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dmaengine_pcm.h ASoC: pcm_dmaengine: Extract snd_dmaengine_pcm_refine_runtime_hwparams 2019-10-01 12:18:25 +01:00
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hda_chmap.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hda_codec.h ALSA: hda/hdmi - implement mst_no_extra_pcms flag 2019-10-29 17:31:30 +00:00
hda_component.h i915/snd_hdac: I915 subcomponent for the snd_hdac 2019-02-08 16:58:59 +01:00
hda_hwdep.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 32 2019-05-24 17:27:10 +02:00
hda_i915.h ALSA: hda: Make audio component support more generic 2018-07-17 22:25:48 +02:00
hda_register.h ALSA: hda: add register offset for stripe control 2019-01-14 19:52:27 +01:00
hda_regmap.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hda_verbs.h ALSA: hda: add verbs for stripe control 2019-01-14 19:52:23 +01:00
hdaudio_ext.h ALSA: hda: Direct MMIO accesses 2019-08-08 16:36:18 +02:00
hdaudio.h ALSA: hda: Unexport a few more stuff 2019-08-14 20:00:56 +02:00
hdmi-codec.h ASoC: hdmi-codec: Add an op to set callback function for plug event 2019-09-09 14:50:03 +01:00
hwdep.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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intel-nhlt.h ALSA: hda: intel-nhlt: handle NHLT VENDOR_DEFINED DMIC geometry 2019-07-31 15:46:00 +02:00
jack.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
l3.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
madera-pdata.h ASoC: madera: Update SPDX headers 2019-06-26 12:27:50 +01:00
max9768.h
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pcm_drm_eld.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm_iec958.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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pcm.h ALSA: pcm: add support for 352.8KHz and 384KHz sample rate 2019-08-28 11:53:49 +01:00
pt2258.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
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simple_card_utils.h ASoC: simple_card_utils.h: Add missing include 2019-10-09 18:14:50 +01:00
simple_card.h ASoC: simple-card: convert to SPDX identifiers 2018-07-02 10:52:47 +01:00
snd_wavefront.h ASoC: Updates for v4.15 2017-11-13 15:45:57 +01:00
soc-acpi-intel-match.h ASoC: Intel: common: add ACPI matching tables for JSL 2019-10-23 17:46:12 +01:00
soc-acpi.h ASoC: soc-acpi: add link_mask field 2019-10-07 19:43:21 +01:00
soc-component.h ASoC: soc-component: remove snd_pcm_ops from component driver 2019-10-08 13:51:02 +01:00
soc-dai.h ASoC: soc-dai: use bit field for bus_control 2019-08-22 18:30:26 +01:00
soc-dapm.h Merge branch 'asoc-5.4' into asoc-next 2019-09-09 14:55:20 +01:00
soc-dpcm.h ASoC: soc-dpcm: tidyup for_each_dpcm_xx() macro 2019-10-25 11:06:35 +01:00
soc-topology.h ASoC: topology: unload physical dai link in remove 2019-02-04 11:59:30 +01:00
soc.h ASoC: soc-core: add for_each_rtd_components() and replace 2019-10-23 17:44:24 +01:00
sof.h ASoC: SOF: support alternate list of machines 2019-10-07 19:43:40 +01:00
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