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ASoC: dmaengine_pcm: Allow passing component name via config

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Merge series from Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>:

At the moment we cannot instantiate two dmaengine_pcms with the same
parent device, as the components will be named the same, leading to
conflicts.

Add 'name' field to the snd_dmaengine_pcm_config, and use that (if
defined) as the component name instead of deriving the component name
from the device.
This commit is contained in:
Mark Brown 2024-03-26 14:11:12 +00:00
commit 37d6983992
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GPG Key ID: 24D68B725D5487D0
3 changed files with 10 additions and 3 deletions
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2
include/sound/dmaengine_pcm.h
View File

@ -118,6 +118,7 @@ int snd_dmaengine_pcm_refine_runtime_hwparams(
* which do not use devicetree.
* @process: Callback used to apply processing on samples transferred from/to
* user space.
* @name: Component name. If null, dev_name will be used.
* @compat_filter_fn: Will be used as the filter function when requesting a
* channel for platforms which do not use devicetree. The filter parameter
* will be the DAI's DMA data.
@ -143,6 +144,7 @@ struct snd_dmaengine_pcm_config {
int (*process)(struct snd_pcm_substream *substream,
int channel, unsigned long hwoff,
unsigned long bytes);
const char *name;
dma_filter_fn compat_filter_fn;
struct device *dma_dev;
const char *chan_names[SNDRV_PCM_STREAM_LAST + 1];

2
sound/soc/soc-core.c
View File

@ -2796,11 +2796,13 @@ int snd_soc_component_initialize(struct snd_soc_component *component,
INIT_LIST_HEAD(&component->list);
mutex_init(&component->io_mutex);
if (!component->name) {
component->name = fmt_single_name(dev, &component->id);
if (!component->name) {
dev_err(dev, "ASoC: Failed to allocate name\n");
return -ENOMEM;
}
}
component->dev = dev;
component->driver = driver;

3
sound/soc/soc-generic-dmaengine-pcm.c
View File

@ -441,6 +441,9 @@ int snd_dmaengine_pcm_register(struct device *dev,
pcm->config = config;
pcm->flags = flags;
if (config->name)
pcm->component.name = config->name;
ret = dmaengine_pcm_request_chan_of(pcm, dev, config);
if (ret)
goto err_free_dma;