ALSA: hda/cirrus: Restrict prompt only for CONFIG_EXPERT

The split of Cirrus HD-audio codec driver may confuse users when
migrating from the previous kernel configs and leave the needed
drivers disa

ALSA: hda/cirrus: Restrict prompt only for CONFIG_EXPERT

The split of Cirrus HD-audio codec driver may confuse users when
migrating from the previous kernel configs and leave the needed
drivers disabled. Although we've already set y as default, it's still
safer to paper over the wrong choices.

This patch marks the prompt of split CS420x and CS421x codec drivers
with CONFIG_EXPERT, so that they are all enabled when the top-level
CONFIG_SND_HDA_CODEC_CIRRUS is set.

For users who really care about the minimalistic configuration, they
can turn each driver on/off individually after setting
CONFIG_EXPERT=y.

This patch adds the missing help text to the top-level
CONFIG_SND_HDA_CIRRUS_CODEC together with the explanation of
individual choices, and corrects the help texts that don't fit well
nowadays, too.

Fixes: 1cb8744a36c7 ("ALSA: hda/cirrus: Split to cs420x and cs421x drivers")
Link: https://lore.kernel.org/10172c80-daec-4e20-ab57-a483cf1afc02@molgen.mpg.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250806192541.21949-4-tiwai@suse.de

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ALSA: hda/cirrus: Enable drivers as default

Like HD-audio Realtek drivers, Cirrus Logic HD-audio codec driver was
split to multiple drivers, too, and now users are forced to choose the
right kconfig

ALSA: hda/cirrus: Enable drivers as default

Like HD-audio Realtek drivers, Cirrus Logic HD-audio codec driver was
split to multiple drivers, too, and now users are forced to choose the
right kconfig items.

For smoother upgrade path, keep the previous
CONFIG_SND_HDA_CODEC_CIRRUS as the menuconfig.

The new kconfig CONFIG_SND_HDA_CODEC_CS42* are enabled as default, as
long as CONFIG_SND_HDA_CODEC_CIRRUS is set, so that the system with
Cirrus codec can keep working.

This is only about the default config, and each driver can be still
disabled if user wants to reduce the size, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250730064639.25617-3-tiwai@suse.de

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ALSA: hda/cs8409: Rewrite to new probe method

Convert the CS8409 codec driver to use the new hda_codec_ops probe.
The Dolphin support needs an override of unsol_event callback, and
redirect via spec

ALSA: hda/cs8409: Rewrite to new probe method

Convert the CS8409 codec driver to use the new hda_codec_ops probe.
The Dolphin support needs an override of unsol_event callback, and
redirect via spec->unsol_event function pointer for now.

Other than that, no functional changes.

Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250709160434.1859-17-tiwai@suse.de

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ALSA: hda/cirrus: Split to cs420x and cs421x drivers

Since the codec ops for CS420x and CS421x are fairly independent,
split the cirrus codec driver into two drivers, snd-hda-codec-cs420x
and snd-hd

ALSA: hda/cirrus: Split to cs420x and cs421x drivers

Since the codec ops for CS420x and CS421x are fairly independent,
split the cirrus codec driver into two drivers, snd-hda-codec-cs420x
and snd-hda-code-cs421x. Together with the split, convert to the new
hda_codec_ops probe.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250709160434.1859-16-tiwai@suse.de

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ALSA: hda: Move codec drivers into sound/hda/codecs directory

Now move the all remaining codec drivers from sound/pci/hda to
sound/hda/codecs subdirectory. Some drivers are put under the further
ve

ALSA: hda: Move codec drivers into sound/hda/codecs directory

Now move the all remaining codec drivers from sound/pci/hda to
sound/hda/codecs subdirectory. Some drivers are put under the further
vendor subdirectory, and the vendor helper code (*_helper.c) are put
under helpers subdirectory. Also the sub-codec drivers are moved under
a different subdirectory, sound/hda/codecs/sub-codecs, for
distinguishing from the main HD-audio codec drivers.

The prefix patch_ and hda_ as well as the suffix _helper are dropped
from file names as they are mostly superfluous.

No functional changes but just file path shuffling.

Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250709160434.1859-7-tiwai@suse.de

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