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| author |   Takashi Iwai <tiwai@suse.de> | 2021-07-15 09:58:25 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-07-19 16:16:34 +0200 |
| commit | c2b94954add3cb25b40a9aa8badd196671d9872b (patch) | |
| tree | 89809a72a67ffec8c3056e9765aed56221983747 /include | |
| parent | ALSA: core: Add managed card creation (diff) | |
| download | linux-dev-c2b94954add3cb25b40a9aa8badd196671d9872b.tar.xz linux-dev-c2b94954add3cb25b40a9aa8badd196671d9872b.zip | |
ALSA: core: Add device-managed request_dma()
This patch adds a devres-supported helper for requesting an ISA DMA
channel that will be automatically freed at the device unbinding.
It'll be used by quite a few ISA sound drivers.
Link: https://lore.kernel.org/r/20210715075941.23332-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index 7885f903cd5a..b7e9b58d3c78 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -329,6 +329,7 @@ int snd_device_get_state(struct snd_card *card, void *device_data); void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode); void snd_dma_disable(unsigned long dma); unsigned int snd_dma_pointer(unsigned long dma, unsigned int size); +int snd_devm_request_dma(struct device *dev, int dma, const char *name); #endif /* misc.c */ |