Merge tag 'dmaengine-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine updates from Vinod Koul:
 "Core:
   - Support out of order dma completion
   - Support for repeating transaction

  New controllers:
   - Support for Actions S700 DMA engine
   - Renesas R8A774E1, r8a7742 controller binding
   - New driver for Xilinx DPDMA controller

  Other:
   - Support of out of order dma completion in idxd driver
   - W=1 warning cleanup of subsystem
   - Updates to ti-k3-dma, dw, idxd drivers"

* tag 'dmaengine-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (68 commits)
  dmaengine: dw: Don't include unneeded header to platform data header
  dmaengine: Actions: Add support for S700 DMA engine
  dmaengine: Actions: get rid of bit fields from dma descriptor
  dt-bindings: dmaengine: convert Actions Semi Owl SoCs bindings to yaml
  dmaengine: idxd: add missing invalid flags field to completion
  dmaengine: dw: Initialize max_sg_burst capability
  dmaengine: dw: Introduce max burst length hw config
  dmaengine: dw: Initialize min and max burst DMA device capability
  dmaengine: dw: Set DMA device max segment size parameter
  dmaengine: dw: Take HC_LLP flag into account for noLLP auto-config
  dmaengine: Introduce DMA-device device_caps callback
  dmaengine: Introduce max SG burst capability
  dmaengine: Introduce min burst length capability
  dt-bindings: dma: dw: Add max burst transaction length property
  dt-bindings: dma: dw: Convert DW DMAC to DT binding
  dmaengine: ti: k3-udma: Query throughput level information from hardware
  dmaengine: ti: k3-udma: Use defines for capabilities register parsing
  dmaengine: xilinx: dpdma: Fix kerneldoc warning
  dmaengine: xilinx: dpdma: add missing kernel doc
  dmaengine: xilinx: dpdma: remove comparison of unsigned expression
  ...
This commit is contained in:
Linus Torvalds
2020-08-07 12:41:36 -07:00
56 changed files with 1076 additions and 815 deletions

View File

@@ -239,6 +239,22 @@ Currently, the types available are:
want to transfer a portion of uncompressed data directly to the
display to print it
- DMA_COMPLETION_NO_ORDER
- The device does not support in order completion.
- The driver should return DMA_OUT_OF_ORDER for device_tx_status if
the device is setting this capability.
- All cookie tracking and checking API should be treated as invalid if
the device exports this capability.
- At this point, this is incompatible with polling option for dmatest.
- If this cap is set, the user is recommended to provide an unique
identifier for each descriptor sent to the DMA device in order to
properly track the completion.
- DMA_REPEAT
- The device supports repeated transfers. A repeated transfer, indicated by
@@ -420,6 +436,9 @@ supported.
- In the case of a cyclic transfer, it should only take into
account the current period.
- Should return DMA_OUT_OF_ORDER if the device does not support in order
completion and is completing the operation out of order.
- This function can be called in an interrupt context.
- device_config
@@ -509,7 +528,7 @@ dma_cookie_t
DMA_CTRL_ACK
- If clear, the descriptor cannot be reused by provider until the
client acknowledges receipt, i.e. has has a chance to establish any
client acknowledges receipt, i.e. has a chance to establish any
dependency chains
- This can be acked by invoking async_tx_ack()