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ALSA: docs: Remove snd_dma_pci_data() usage in documentation 

The macro will be removed soon later, so update the documentation to
reflect that as well.

Link: https://lore.kernel.org/r/20191105151856.10785-25-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2019-11-05 16:18:56 +01:00
parent 6974f8ad44
commit b65f131b8f
1 changed files with 5 additions and 5 deletions
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10
Documentation/sound/kernel-api/writing-an-alsa-driver.rst
View File

@ -1383,7 +1383,7 @@ shows only the skeleton, how to build up the PCM interfaces.
/* pre-allocation of buffers */
/* NOTE: this may fail */
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->pci),
&chip->pci->dev,
64*1024, 64*1024);
return 0;
}
@ -1470,7 +1470,7 @@ buffer. For the pre-allocation, simply call the following:
::
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->pci),
&chip->pci->dev,
64*1024, 64*1024);
It will allocate a buffer up to 64kB as default. Buffer management
@ -3514,7 +3514,7 @@ bus).
::
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(pci), size, max);
&pci->dev, size, max);
where ``size`` is the byte size to be pre-allocated and the ``max`` is
the maximum size to be changed via the ``prealloc`` proc file. The
@ -3700,14 +3700,14 @@ For creating the SG-buffer handler, call
:c:func:`snd_pcm_lib_preallocate_pages()` or
:c:func:`snd_pcm_lib_preallocate_pages_for_all()` with
``SNDRV_DMA_TYPE_DEV_SG`` in the PCM constructor like other PCI
pre-allocator. You need to pass ``snd_dma_pci_data(pci)``, where pci is
pre-allocator. You need to pass ``&pci->dev``, where pci is
the :c:type:`struct pci_dev <pci_dev>` pointer of the chip as
well.
::
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(pci), size, max);
&pci->dev, size, max);
The ``struct snd_sg_buf`` instance is created as
``substream->dma_private`` in turn. You can cast the pointer like: