ALSA: emu10k1: add separate documentation for E-MU cards

They are sufficiently different from Sound Blasters.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230825222157.170978-3-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

docs: sound: add 'pcmtest' driver documentation

Add documentation for the new Virtual PCM Test Driver. It covers all
possible usage cases: errors and delay injections, random and
pattern-based data generation, playback and ioctl redefinition
functionalities testing.

We have a lot of different virtual media drivers, which can be used for
testing of the userspace applications and media subsystem middle layer.
However, all of them are aimed at testing the video functionality and
simulating the video devices. For audio devices we have only snd-dummy
module, which is good in simulating the correct behavior of an ALSA device.
I decided to write a tool, which would help to test the userspace ALSA
programs (and the PCM middle layer as well) under unusual circumstances
to figure out how they would behave. So I came up with this Virtual PCM
Test Driver.

This new Virtual PCM Test Driver has several features which can be useful
during the userspace ALSA applications testing/fuzzing, or testing/fuzzing
of the PCM middle layer. Not all of them can be implemented using the
existing virtual drivers (like dummy or loopback). Here is what can this
driver do:

- Simulate both capture and playback processes
- Check the playback stream for containing the looped pattern
- Generate random or pattern-based capture data
- Inject delays into the playback and capturing processes
- Inject errors during the PCM callbacks

Also, this driver can check the playback stream for containing the
predefined pattern, which is used in the corresponding selftest to check
the PCM middle layer data transferring functionality. Additionally, this
driver redefines the default RESET ioctl, and the selftest covers this PCM
API functionality as well.

The driver supports both interleaved and non-interleaved access modes, and
have separate pattern buffers for each channel. The driver supports up to
4 channels and up to 8 substreams.

Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Acked-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230606193254.20791-1-ivan.orlov0322@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize img,spdif-in.txt

Yet another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize serial-u16550.txt

Yet another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize hdspm.txt

A simple conversion from a plain text file. Quite a few reformatting
in the end due to the style of the original document.

Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize README.maya44

Another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize Bt87x.txt

Another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize MIXART.txt

Another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize Audiophile-USB.txt

Another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize VIA82xx-mixer.txt

Another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize emu10k1-jack.txt

Another simple conversion from a plain text file.
Put to cards directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize Audigy-mixer.txt

Another simple conversion from a plain text file.
Put to cards subdirectory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize SB-Live-mixer document

Another simple conversion from a plain text file.
Put to cards subdirectory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize CMIPCI document

A simple conversion from a plain text file.
Put to cards subdirectory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

ALSA: doc: ReSTize Joystick document

A conversion from a simple text file.
A new subdirectory, cards, was created to contain the card-specific
information like this one.

Signed-off-by: Takashi Iwai <tiwai@suse.de>