linux-toradex.git/drivers/dma/sun6i-dma.c, branch v4.9.130

dmaengine: sun6i: fix the uninitialized value for v_lli

2016-11-14T05:05:58+00:00

dma_pool_alloc does not initialize the value of the newly allocated
block for the v_lli, and the uninitilize value make the tests failed
which is on pine64 with dmatest.
we can fix it just change the "|=" to "=" for the v_lli->cfg.

Signed-off-by: Hao Zhang 
Acked-by: Maxime Ripard 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Add support for Allwinner A83T (sun8i) variant

2016-09-26T17:45:06+00:00

The A83T SoC has the same dma engine as the A31 (sun6i), with a reduced
amount of endpoints and physical channels.

Signed-off-by: Jean-Francois Moine 
Acked-by: Maxime Ripard 
Signed-off-by: Vinod Koul

dmaengine: sun6i-dma: Only calculate residue if state exists.

2016-06-21T16:05:00+00:00

There is no point in calculating the residue if state does not
exist to store the value.

Signed-off-by: Peter Griffin 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Add cyclic capability

2016-05-02T10:29:02+00:00

DMA cyclic transfers are required by audio streaming.

Acked-by: Maxime Ripard 
Signed-off-by: Jean-Francois Moine 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Remove useless check

2016-05-02T10:29:02+00:00

The transfer direction is now checked in set_config.
There is no need to check it twice.

Signed-off-by: Jean-Francois Moine 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Set default maxburst size and bus width

2016-05-02T10:29:01+00:00

Some DMA clients, as audio, don't set the maxburst size and bus width
on the memory side when starting DMA transfers.
This patch prevents such transfers to be aborted by providing system
default values to the lacking ones.

Signed-off-by: Jean-Francois Moine 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Simplify lli setting

2016-04-26T03:49:18+00:00

Checking the DMA config before setting the lli list avoids to do tests
inside the setting loop.

Signed-off-by: Jean-Francois Moine 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Fix impossible settings of burst and bus width

2016-04-26T03:39:28+00:00

In the commit 1f9cd915b64bb95f ("dmaengine: sun6i: Fix memcpy operation"),
the signed values returned by convert_burst() and convert_buswidth()
were stored in an unsigned value.
Then, these values were considered as errors when non null.

As a result, DMA transfers were rejected when the burst or buswidth
had values different from 1, as 8 for the burst or 4 for the bus width.

Acked-by: Maxime Ripard 
Signed-off-by: Jean-Francois Moine 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Fix the access of the IRQ register

2016-04-26T03:39:28+00:00

The IRQ register number is computed, but this number was not used
and the register was the one indexed by the channel index instead.
Then, only the first DMA channel was working.

Acked-by: Maxime Ripard 
Signed-off-by: Jean-Francois Moine 
Signed-off-by: Vinod Koul

dmaengine: sun6i: Fix module autoload for OF platform driver

2015-10-01T02:05:26+00:00

This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Luis de Bethencourt 
Acked-by: Maxime Ripard 
Signed-off-by: Vinod Koul