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| author | Takashi Iwai <tiwai@suse.de> | 2023-08-15 21:01:29 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-08-18 12:19:18 +0200 |
| commit | 66201cacc33d740057bd64af6371ad846cff376f (patch) | |
| tree | dbd358da5e2dae65d569cdd223fd3c84bf830291 /include/sound | |
| parent | 44f08b67f2d2c699f2b1784d2aacdf3760a09cc5 (diff) | |
| download | linux-66201cacc33d740057bd64af6371ad846cff376f.tar.gz | |
ASoC: component: Add generic PCM copy ops
For following the ALSA PCM core change, a new PCM copy ops is added
toe ASoC component framework: snd_soc_component_driver receives the
copy ops, and snd_soc_pcm_component_copy() helper is provided.
This also fixes a long-standing potential bug where the ASoC driver
covers only copy_user PCM callback and misses the copy from kernel
pointers (such as OSS PCM layer), too.
As of this patch, the old copy_user is still kept, but it'll be
dropped later after all drivers are converted.
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230815190136.8987-19-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/soc-component.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h index 87f248a0627184..8040f001f2fb59 100644 --- a/include/sound/soc-component.h +++ b/include/sound/soc-component.h @@ -141,6 +141,10 @@ struct snd_soc_component_driver { struct snd_pcm_substream *substream, int channel, unsigned long pos, void __user *buf, unsigned long bytes); + int (*copy)(struct snd_soc_component *component, + struct snd_pcm_substream *substream, int channel, + unsigned long pos, struct iov_iter *buf, + unsigned long bytes); struct page *(*page)(struct snd_soc_component *component, struct snd_pcm_substream *substream, unsigned long offset); @@ -512,6 +516,9 @@ int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream); int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream, int channel, unsigned long pos, void __user *buf, unsigned long bytes); +int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream, + int channel, unsigned long pos, + struct iov_iter *buf, unsigned long bytes); struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream, unsigned long offset); int snd_soc_pcm_component_mmap(struct snd_pcm_substream *substream, |