[PATCH 0/2] dmaengine: hdmac: Implement interleaved transfers support

Maxime Ripard maxime.ripard at free-electrons.com
Wed May 27 07:01:51 PDT 2015

Hi everyone,

This patchset implements the interleaved transfer capability found on
some AT91 SoCs.

The hardware actually support a somewhat similar mode called
picture-in-picture, that allows to transfer a squared portion of a

That actually means that the interleaved transfer that this hardware
support will need to have the same size and ICGs across all its

It has been tested on the SAMA5D36.

Let me know what you think!

Maxime Ripard (2):
  dmaengine: Move icg helpers to global header
  dmaengine: hdmac: Implement interleaved transfers

 drivers/dma/at_hdmac.c      | 106 ++++++++++++++++++++++++++++++++++++++++++++
 drivers/dma/at_hdmac_regs.h |   5 +++
 drivers/dma/at_xdmac.c      |  46 ++-----------------
 include/linux/dmaengine.h   |  27 +++++++++++
 4 files changed, 142 insertions(+), 42 deletions(-)


More information about the linux-arm-kernel mailing list