linux-toradex.git/drivers/dma/dw_dmac.c, branch v3.7

dw_dmac: fix a regression in dwc_prep_dma_memcpy

2012-10-02T07:48:00+00:00

Sometimes memory-to-memory test is failed, that's why we need to choose minimum
data portion between source and destination limits together.

Signed-off-by: Andy Shevchenko 
Signed-off-by: Vinod Koul

dw_dmac: introduce software emulation of LLP transfers

2012-09-27T10:05:23+00:00

Some controllers have the reduced functionality where the LLP multi block
transfers are not supported. This patch introduces a support of such
controllers. In case of memory copy or scatter-gather lists it emulates LLP
transfers via bunch of the regular single block ones.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dw_dmac: autoconfigure data_width or get it via platform data

2012-09-27T10:05:23+00:00

Not all of the controllers support the 64 bit data width. Make it configurable
via platform data. The driver will try to get a value from the component
parameters, otherwise it will use the platform data.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dw_dmac: autoconfigure block_size or use platform data

2012-09-27T10:05:23+00:00

The maximum block size is a configurable parameter for the chip. So, driver
will try to get it from the encoded component parameters. Otherwise it will
come from the platform data.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dw_dmac: get number of channels from hardware if possible

2012-09-27T10:05:23+00:00

In case the controller has the encoded parameters feature enabled the driver
will use it to get the number of channels. In the future it will be used for
the other important parameters as well.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dw_dmac: mark dwc_dump_chan_regs as inline

2012-09-27T10:05:22+00:00

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

dw_dmac: utilize slave_id to pass request line

2012-09-14T02:59:46+00:00

There is slave_id field in the generic slave config structure that is dedicated
for the uniq slave number. In our case we have the request lines wired to the
certain hardware. Therefore the number of the request line is uniq and could be
used as slave_id. It allows us in some cases to drop out the usage of the
custom slave config structure.

Signed-off-by: Andy Shevchenko 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

Merge branch 'for-3.7' into next

2012-08-05T07:34:33+00:00

dw_dmac: use devm_* functions to simplify code

2012-07-26T06:10:07+00:00

Use devm_kzalloc, devm_clk_get, devm_request_irq, and devm_request_and_ioremap
to reduce the code and to simplify the error path.

Signed-off-by: Andy Shevchenko 
Cc: Viresh Kumar 
Acked-by: Viresh Kumar 
Signed-off-by: Vinod Koul

Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma

2012-07-25T00:12:54+00:00

Pull slave-dmaengine update from Vinod Koul:
 "This time we have a new dmaengine driver from the tegra folks.  Also
  we have Guennadi's cleanup of sh drivers which incudes a library for
  sh drivers.  And the usual odd fixes in bunch of drivers and some nice
  cleanup of dw_dmac from Andy."

Fix up conflicts in drivers/mmc/host/sh_mmcif.c

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (46 commits)
  dmaengine: Cleanup logging messages
  mmc: sh_mmcif: switch to the new DMA channel allocation and configuration
  dma: sh: provide a migration path for slave drivers to stop using .private
  dma: sh: use an integer slave ID to improve API compatibility
  dmaengine: shdma: prepare to stop using struct dma_chan::private
  sh: remove unused DMA device pointer from SIU platform data
  ASoC: siu: don't use DMA device for channel filtering
  dmaengine: shdma: (cosmetic) simplify a static function
  dmaengine: at_hdmac: add a few const qualifiers
  dw_dmac: use 'u32' for LLI structure members, not dma_addr_t
  dw_dmac: mark dwc_dump_lli inline
  dma: mxs-dma: Export missing symbols from mxs-dma.c
  dma: shdma: convert to the shdma base library
  ASoC: fsi: prepare for conversion to the shdma base library
  usb: renesas_usbhs: prepare for conversion to the shdma base library
  ASoC: siu: prepare for conversion to the shdma base library
  serial: sh-sci: prepare for conversion to the shdma base library
  mmc: sh_mobile_sdhi: prepare for conversion to the shdma base library
  mmc: sh_mmcif: remove unneeded struct sh_mmcif_dma, prepare to shdma conversion
  dma: shdma: prepare for conversion to the shdma base library
  ...