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linux-stable/include/sound
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Richard Fitzgerald 98fa52d89a ASoC: soc-card: Add storage for PCI SSID 
[ Upstream commit 47f56e38a1 ]

Add members to struct snd_soc_card to store the PCI subsystem ID (SSID)
of the soundcard.

The PCI specification provides two registers to store a vendor-specific
SSID that can be read by drivers to uniquely identify a particular
"soundcard". This is defined in the PCI specification to distinguish
products that use the same silicon (and therefore have the same silicon
ID) so that product-specific differences can be applied.

PCI only defines 0xFFFF as an invalid value. 0x0000 is not defined as
invalid. So the usual pattern of zero-filling the struct and then
assuming a zero value unset will not work. A flag is included to
indicate when the SSID information has been filled in.

Unlike DMI information, which has a free-format entirely up to the vendor,
the PCI SSID has a strictly defined format and a registry of vendor IDs.

It is usual in Windows drivers that the SSID is used as the sole identifier
of the specific end-product and the Windows driver contains tables mapping
that to information about the hardware setup, rather than using ACPI
properties.

This SSID is important information for ASoC components that need to apply
hardware-specific configuration on PCI-based systems.

As the SSID is a generic part of the PCI specification and is treated as
identifying the "soundcard", it is reasonable to include this information
in struct snd_soc_card, instead of components inventing their own custom
ways to pass this information around.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20230912163207.3498161-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2023-11-28 16:54:51 +00:00
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ac97 ASoC: ac97: convert to SPDX identifiers 2018-07-02 10:56:09 +01:00
sof ASoC: SOF: Add `src_hash` to `sof_ipc_fw_version` structure 2020-09-17 15:53:16 +01:00
ac97_codec.h ALSA: ac97: Treat snd_ac97_bus_ops as const 2020-01-03 09:24:08 +01:00
aci.h
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compress_driver.h ALSA: compress: fix partial_drain completion state 2020-07-07 11:52:18 +02:00
control.h ALSA: control: Use deferred fasync helper 2022-08-25 11:38:21 +02:00
core.h ALSA: core: Add async signal helpers 2022-08-25 11:38:20 +02:00
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hda_chmap.h
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hda_codec.h ALSA: hda: intel: Allow repeatedly probing on codec configuration errors 2021-10-27 09:56:54 +02:00
hda_component.h i915/snd_hdac: I915 subcomponent for the snd_hdac 2019-02-08 16:58:59 +01:00
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hda_i915.h ALSA: hda: Make audio component support more generic 2018-07-17 22:25:48 +02:00
hda_register.h ALSA: hda: fix VS_LTRC register name 2020-08-27 14:22:17 +01:00
hda_regmap.h ALSA: hda: Manage concurrent reg access more properly 2020-01-13 13:40:41 +01:00
hda_verbs.h ALSA: hda: add verbs for stripe control 2019-01-14 19:52:23 +01:00
hdaudio.h ALSA: hda: add snd_hdac_stop_streams() helper 2023-01-14 10:16:20 +01:00
hdaudio_ext.h ALSA/ASoC: hda: move/rename snd_hdac_ext_stop_streams to hdac_stream.c 2023-01-14 10:16:20 +01:00
hdmi-codec.h ASoC: hdmi-codec: Use set_jack ops to set jack 2020-09-22 12:48:03 +01:00
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info.h ALSA: info: Make snd_info_entry_ops as const 2020-01-03 09:24:18 +01:00
initval.h ALSA: Allow const arrays for legacy resource management helpers 2020-01-05 16:14:26 +01:00
intel-dsp-config.h ALSA: hda: add Intel DSP configuration / probe code 2019-10-23 06:31:37 +02:00
intel-nhlt.h ALSA: hda: intel-nhlt: verify config type 2021-03-09 11:11:14 +01:00
jack.h ALSA: jack: Access input_dev under mutex 2022-06-09 10:20:51 +02:00
l3.h
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madera-pdata.h ASoC: madera: Update SPDX headers 2019-06-26 12:27:50 +01:00
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pxa2xx-lib.h ASoC: pxa: remove snd_pcm_ops 2019-10-08 13:47:20 +01:00
rawmidi.h ALSA: rawmidi: Fix racy buffer resize under concurrent accesses 2020-05-07 22:29:14 +02:00
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rt1015.h ASoC: rt1015: add delay to fix pop noise from speaker 2020-11-05 17:25:17 +00:00
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snd_wavefront.h
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soc-acpi-intel-match.h ASoC: Intel: Remove rt5640 support for baytrail solution 2020-10-06 15:12:20 +01:00
soc-acpi.h ASoC: Intel: add codec name prefix to ACPI machine description 2020-09-23 18:13:13 +01:00
soc-card.h ASoC: soc-card: Add storage for PCI SSID 2023-11-28 16:54:51 +00:00
soc-component.h ASoC: soc-component: add mark for snd_soc_pcm_component_pm_runtime_get/put() 2020-09-28 17:01:44 +01:00
soc-dai.h ASoC/SoundWire: dai: expand 'stream' concept beyond SoundWire 2023-01-14 10:16:28 +01:00
soc-dapm.h ASoC: soc-dapm.h: fixup warning struct snd_pcm_substream not declared 2023-03-11 16:39:39 +01:00
soc-dpcm.h ASoC: soc-pcm: test if a BE can be prepared 2023-06-21 15:45:36 +02:00
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soc-topology.h ASoC: topology: unload physical dai link in remove 2019-02-04 11:59:30 +01:00
soc.h ASoC: soc-card: Add storage for PCI SSID 2023-11-28 16:54:51 +00:00
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