linux-toradex.git/drivers/dma/shdma.h, branch v3.0.5

dmaengine: shdma: Update SH_DMAC_MAX_CHANNELS to 20

2011-05-25T02:36:17+00:00

Update SH_DMAC_MAX_CHANNELS to support the 20 DMA
channels included in the sh73a0 SY-DMAC hardware.

Signed-off-by: Magnus Damm 
Signed-off-by: Paul Mundt

dmaengine: shdma: add runtime- and system-level power management

2011-05-23T03:44:33+00:00

This patch extends and fixes runtime power management in the shdma
driver to support powering down the DMA controller and adds support
for system-level suspend and resume.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Paul Mundt

dma: shdma: NMI support.

2010-12-17T10:16:10+00:00

Presently DMA transfers are interrupted and aborted by the NMI. This
implements some basic logic for more gracefully handling and clearing
each controller's NMIF flag via the NMI die chain, needed to resume
transfers post-NMI.

Reported-by: Michael Szafranek 
Signed-off-by: Paul Mundt

dmaengine: shdma: Introduce include/linux/sh_dma.h

2010-03-23T08:20:06+00:00

Create a common platform data header file for the
shdma dmaengine driver. This is done by moving
common structures from sh asm/dmaengine.h to
linux/sh_dma.h. DMA registers are also copied from
sh asm/dma-register.h to make the code architecture
independent.

The sh header file asm/dmaengine.h is still kept
with the slave id enum. This allows us to keep the
old processor specific code as is and slowly move
over to slave id enums in per-processor headers.

Signed-off-by: Magnus Damm 
Signed-off-by: Paul Mundt

dmaengine: shdma: Common SH_DMA_SLAVE_NUMBER

2010-03-23T08:19:39+00:00

Move SHDMA_SLAVE_NUMBER from asm/dmaengine.h to
shdma.h. Set it to 256 to support a wide range
of processors. The amount of memory consumed by
this change is limited to 256 bits.

While at it, rename to SH_DMA_SLAVE_NUMBER to
match with the rest of the file.

Signed-off-by: Magnus Damm 
Acked-by: Guennadi Liakhovetski 
Signed-off-by: Paul Mundt

dmaengine: shdma: extend .device_terminate_all() to record partial transfer

2010-03-02T02:12:03+00:00

This patch extends the .device_terminate_all() method of the shdma driver
to return number of bytes transfered in the current descriptor.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Paul Mundt

dmaengine: shdma: separate DMA headers.

2010-03-02T02:09:04+00:00

Separate SH DMA headers into ones, commonly used by both drivers, and ones,
specific to each of them. This will make the future development of the
dmaengine driver easier.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Mark Brown 
Signed-off-by: Paul Mundt

dmaengine: shdma: convert to platform device resources

2010-03-02T02:09:02+00:00

The shdma dmaengine driver currently uses numerous macros to support various
platforms, selected by ifdef's. Convert it to use platform device resources and
lists of channel descriptors to specify register locations, interrupt numbers
and other system-specific configuration variants. Unavoidably, we have to
simultaneously convert all shdma users to provide those resources.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Paul Mundt

sh: implement DMA_SLAVE capability in SH dmaengine driver

2010-02-08T00:40:26+00:00

Tested to work with a SIU ASoC driver on sh7722 (migor).

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Dan Williams 
Signed-off-by: Paul Mundt

sh: fix DMA driver's descriptor chaining and cookie assignment

2009-12-17T16:41:39+00:00

The SH DMA driver wrongly assigns negative cookies to transfer descriptors,
also, its chaining of partial descriptors is broken. The latter problem is
usually invisible, because maximum transfer size per chunk is 16M, but if you
artificially set this limit lower, the driver fails. Since cookies are also
used in chunk management, both these problems are fixed in one patch. As side
effects a possible memory leak, when descriptors are prepared, but not
submitted, and multiple races have also been fixed.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Paul Mundt 
Acked-by: Nobuhiro Iwamatsu 
Signed-off-by: Dan Williams