linux-toradex.git/drivers/dma/pxa_dma.c, branch v5.0

Merge tag 'dmaengine-4.21-rc1' of git://git.infradead.org/users/vkoul/slave-dma

2019-01-01T23:45:48+00:00

Pull dmaengine updates from Vinod Koul:
 "This includes a new driver, removes R-Mobile APE6 as it is no longer
  used, sprd cyclic dma support, last batch of dma_slave_config
  direction removal and random updates to bunch of drivers.

  Summary:
   - New driver for UniPhier MIO DMA controller
   - Remove R-Mobile APE6 support
   - Sprd driver updates and support for cyclic link-list
   - Remove dma_slave_config direction usage from rest of drivers
   - Minor updates to dmatest, dw-dmac, zynqmp and bcm dma drivers"

* tag 'dmaengine-4.21-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (48 commits)
  dmaengine: qcom_hidma: convert to DEFINE_SHOW_ATTRIBUTE
  dmaengine: pxa: remove DBGFS_FUNC_DECL()
  dmaengine: mic_x100_dma: convert to DEFINE_SHOW_ATTRIBUTE
  dmaengine: amba-pl08x: convert to DEFINE_SHOW_ATTRIBUTE
  dmaengine: Documentation: Add documentation for multi chan testing
  dmaengine: dmatest: Add transfer_size parameter
  dmaengine: dmatest: Add alignment parameter
  dmaengine: dmatest: Use fixed point div to calculate iops
  dmaengine: dmatest: Add support for multi channel testing
  dmaengine: rcar-dmac: Document R8A774C0 bindings
  dt-bindings: dmaengine: usb-dmac: Add binding for r8a774c0
  dmaengine: zynqmp_dma: replace spin_lock_bh with spin_lock_irqsave
  dmaengine: sprd: Add me as one of the module authors
  dmaengine: sprd: Support DMA 2-stage transfer mode
  dmaengine: sprd: Support DMA link-list cyclic callback
  dmaengine: sprd: Set cur_desc as NULL when free or terminate one dma channel
  dmaengine: sprd: Fix the last link-list configuration
  dmaengine: sprd: Get transfer residue depending on the transfer direction
  dmaengine: sprd: Remove direction usage from struct dma_slave_config
  dmaengine: dmatest: fix a small memory leak in dmatest_func()
  ...

dmaengine: pxa: remove DBGFS_FUNC_DECL()

2018-12-17T06:19:41+00:00

We already have the DEFINE_SHOW_ATTRIBUTE, There is no need to define
such a macro, so remove DBGFS_FUNC_DECL.

Signed-off-by: Yangtao Li 
Acked-by: Robert Jarzmik 
Signed-off-by: Vinod Koul

dmaengine: pxa: make the filter function internal

2018-12-03T21:41:07+00:00

As the pxa architecture and all its related drivers do not rely anymore
on the filter function, thanks to the slave map conversion, make
pxad_filter_fn() static, and remove it from the global namespace.

Signed-off-by: Robert Jarzmik 
Acked-by: Vinod Koul

dmaengine: pxa: fix semicolon.cocci warnings

2018-09-11T06:10:35+00:00

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Signed-off-by: kbuild test robot 
Signed-off-by: Julia Lawall 
Signed-off-by: Vinod Koul

dmaengine: pxa_dma: use dmaenginem_async_device_register to simplify the code

2018-08-29T16:13:18+00:00

Use dmaenginem_async_device_register to simplify the code:
	remove dma_async_device_unregister.

Signed-off-by: Huang Shijie 
Acked-by: Robert Jarzmik 
Signed-off-by: Vinod Koul

dmaengine: pxa: add a default requestor policy

2018-06-18T19:29:23+00:00

As what former drcmr -1 value meant, add a this as a default to each
channel, ie. that by default no requestor line is used.

This is specifically used for network drivers smc91x and smc911x, and
needed for their port to slave maps.

Cc: Arnd Bergmann 
Signed-off-by: Robert Jarzmik 
Acked-by: Vinod Koul

dmaengine: pxa: use a dma slave map

2018-06-18T19:28:44+00:00

In order to remove the specific knowledge of the dma mapping from PXA
drivers, add a default slave map for pxa architectures.

This won't impact MMP architecture, but is aimed only at all PXA boards.

This is the first step, and once all drivers are converted,
pxad_filter_fn() will be made static, and the DMA resources removed from
device.c.

Signed-off-by: Robert Jarzmik 
Reported-by: Arnd Bergmann 
Acked-by: Vinod Koul

Revert "dmaengine: pxa_dma: add support for legacy transition"

2016-10-18T14:44:32+00:00

This reverts commit c91134d9194478144ba579ca6efeddf628055650.

The conversion of the pxa architecture is now finished for all
drivers, so this functions has fullfilled its purpose and can
now be removed.

Signed-off-by: Robert Jarzmik 
Acked-by: Arnd Bergmann 
Signed-off-by: Vinod Koul

dmaengine: pxa_dma: fix debug message

2016-08-19T10:47:26+00:00

In a very tight timeframe, the debug message in the transfer completion
handler can be misleading, as the completion test report can change just
after the message, and the code flow cannot be deduced from the debug
message.

This is just a cleanup to make debugging easier.

Signed-off-by: Robert Jarzmik 
Signed-off-by: Vinod Koul

dmaengine: pxa_dma: fix hotchain corner case

2016-08-19T06:31:59+00:00

In the case where a descriptor is chained on a running channel, and as
explained in the comment in the code 10 lines above, the success of the
chaining is ensured either if :
 - the DMA is still running
 - or if the chained transfer is completed

Unfortunately the transfer completness test was done on the descriptor
to which the transfer was chained, and not the transfer being chained at
the end, ie. hot-chained.

This corner case is extremely hard to trigger, as usually the DMA chain
is still running, and the first case takes care of returning success of
the hot-chaining. It was seen by hot-chaining several "small transfers"
to a running "big transfer", not in a real-life usecase but by testing
the robustness of the driver.

Signed-off-by: Robert Jarzmik 
Signed-off-by: Vinod Koul