snd_pcm_lib_mmap_iomem (9) Linux Manual Page
snd_pcm_lib_mmap_iomem – Default PCM data mmap function for I/O mem
Synopsis
int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_struct *area);Arguments
substream
-
- PCM substream
area
- VMA
Description
When your hardware uses the iomapped pages as the hardware buffer and wants to mmap it, pass this function as mmap pcm_ops. Note that this is supposed to work only on limited architectures.