1SND_PCM_LIB_MMAP_IOM(9) PCM API SND_PCM_LIB_MMAP_IOM(9)
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6 snd_pcm_lib_mmap_iomem - Default PCM data mmap function for I/O mem
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9 int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream * substream,
10 struct vm_area_struct * area);
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13 substream
14 PCM substream
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16 area
17 VMA
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20 When your hardware uses the iomapped pages as the hardware buffer and
21 wants to mmap it, pass this function as mmap pcm_ops. Note that this is
22 supposed to work only on limited architectures.
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25Kernel Hackers Manual 3.10 June 2019 SND_PCM_LIB_MMAP_IOM(9)