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ALSA: doc: Fix PCM interface section typos

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Fix two mistakes in the PCM interface section:
1/ Members of the snd_pcm_hardware structure are channels_{min,max}
   and not channel_{min,max} (mind the 's').
2/ Another sentence is incomplete as the reference to one structure
   member (period_bytes_max) is missing.

There is no relevant 'Fixes:' tag to apply as both typos predate the
Git era.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20230130162924.119389-1-miquel.raynal@bootlin.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Miquel Raynal 2023-01-30 17:29:24 +01:00 committed by Takashi Iwai
parent d8dc872046
commit 372a0d7856
1 changed files with 5 additions and 5 deletions
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10
Documentation/sound/kernel-api/writing-an-alsa-driver.rst
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@ -1720,16 +1720,16 @@ Typically, you'll have a hardware descriptor as below:
- ``rate_min`` and ``rate_max`` define the minimum and maximum sample
rate. This should correspond somehow to ``rates`` bits.
- ``channel_min`` and ``channel_max`` define, as you might already
- ``channels_min`` and ``channels_max`` define, as you might already
expected, the minimum and maximum number of channels.
- ``buffer_bytes_max`` defines the maximum buffer size in
bytes. There is no ``buffer_bytes_min`` field, since it can be
calculated from the minimum period size and the minimum number of
periods. Meanwhile, ``period_bytes_min`` and define the minimum and
maximum size of the period in bytes. ``periods_max`` and
``periods_min`` define the maximum and minimum number of periods in
the buffer.
periods. Meanwhile, ``period_bytes_min`` and ``period_bytes_max``
define the minimum and maximum size of the period in bytes.
``periods_max`` and ``periods_min`` define the maximum and minimum
number of periods in the buffer.
The “period” is a term that corresponds to a fragment in the OSS
world. The period defines the size at which a PCM interrupt is