Changelog v1 -> v2: * https://lore.kernel.org/linux-iio/20210211123353.78963-1-alexandru.ardelean@xxxxxxxxxx/T/#t * removed IIO_BUFFER_BLOCK_FLAG_CYCLIC flag; will be added in a later patch * removed extra line in tools/iio/iio_generic_buffer.c * patch 'iio: core: Add mmap interface infrastructure' added docstrings for new hooks (alloc_blocks, mmap, etc) This is basically Lars' work adapted from branch: https://github.com/larsclausen/linux/commits/iio-high-speed-5.10 [hopefully i got the stuff correctly from that branch] What is different, is that this one is adapted on top of the multibuffer support (currently at v5) discussed here: https://lore.kernel.org/linux-iio/20210211122452.78106-1-alexandru.ardelean@xxxxxxxxxx/T/#t Also, adapted an example for high-speed/mmap support in 'tools/iio/iio_generic_buffer.c' The example is adapted from libiio: https://github.com/analogdevicesinc/libiio/blob/master/local.c#L51 but will all the ioctl()s organized after the one that are reserved (hopefully) for IIO Tested that mmap() works. Moved (artifically) valid buffer0 as buffer2 and the operation still works. Alexandru Ardelean (1): tools: iio: add example for high-speed buffer support Lars-Peter Clausen (2): iio: core: Add mmap interface infrastructure iio: buffer-dma: Add mmap support drivers/iio/buffer/industrialio-buffer-dma.c | 314 ++++++++++++++++-- .../buffer/industrialio-buffer-dmaengine.c | 22 +- drivers/iio/industrialio-buffer.c | 158 +++++++++ include/linux/iio/buffer-dma.h | 25 +- include/linux/iio/buffer_impl.h | 23 ++ include/uapi/linux/iio/buffer.h | 26 ++ tools/iio/iio_generic_buffer.c | 183 +++++++++- 7 files changed, 704 insertions(+), 47 deletions(-) -- 2.17.1
