linux-toradex.git/include/linux/sh_dma.h, branch v3.10.2

dma: sh: provide a migration path for slave drivers to stop using .private

2012-07-20T05:58:20+00:00

This patch extends the sh dmaengine driver to support the preferred channel
selection and configuration method, instead of using the "private" field
from struct dma_chan. We add a standard filter function to be used by
slave drivers instead of implementing their own ones, and add support for
the DMA_SLAVE_CONFIG control operation, which must accompany the new
channel selection method. We still support the legacy .private channel
allocation method to cater for a smooth driver migration.

Signed-off-by: Guennadi Liakhovetski 
[applied a trvial checkpath fix]
Signed-off-by: Vinod Koul

dma: sh: use an integer slave ID to improve API compatibility

2012-07-20T05:53:45+00:00

Initially struct shdma_slave has been introduced with the only member - an
unsigned slave ID - to describe common properties of DMA slaves in an
extensible way. However, experience shows, that a slave ID is indeed the
only parameter, needed to identify DMA slaves. This is also, what is used
by the core dmaengine API in struct dma_slave_config. We switch to using
the slave_id directly, instead of passing a pointer to struct shdma_slave
to improve compatibility with the core. We also make the slave_id signed
for easier error checking.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Vinod Koul

dmaengine: shdma: prepare to stop using struct dma_chan::private

2012-07-20T05:53:44+00:00

Using struct dma_chan::private is deprecated. To update the shdma driver to
stop using it we first have to eliminate internal runtime uses of it. After
that we will also be able to stop using it for channel configuration.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Vinod Koul

dma: shdma: convert to the shdma base library

2012-07-13T03:43:08+00:00

The shdma base library has originally been extracted from the shdma driver,
which now can be converted to actually use it.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Vinod Koul

dma: shdma: prepare for conversion to the shdma base library

2012-07-13T03:43:07+00:00

By placing an anonymous union at the top of struct sh_dmae_slave we can
transparently prepare all device and client drivers for the upcoming
shdma-base conversion.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Vinod Koul

dma: sh_dma: not all SH DMAC implementations support MEMCPY

2012-02-01T16:53:53+00:00

Add a flag to allow platforms to specify, whether a DMAC instance supports
the MEMCPY operation. To avoid regressions, preserve the current default.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Paul Mundt 
Signed-off-by: Vinod Koul

dma: shdma: fix runtime PM: clear channel buffers on reset

2012-01-06T06:10:11+00:00

On platforms, supporting power domains, if the domain, containing a DMAC
instance is powered down, the driver fails to resume correctly. On those
platforms DMAC channels have an additional CHCLR register for clearing
channel buffers. Using this register during runtime resume fixes the
problem.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Vinod Koul

dmaengine: move drivers to dma_transfer_direction

2011-10-27T15:23:43+00:00

fixup usage of dma direction by introducing dma_transfer_direction,
this patch moves dma/drivers/* to use new enum

Cc: Jassi Brar 
Cc: Russell King 
Cc: Viresh Kumar 
Cc: Linus Walleij 
Cc: Nicolas Ferre 
Cc: Mika Westerberg 
Cc: H Hartley Sweeten 
Cc: Li Yang 
Cc: Zhang Wei 
Cc: Sascha Hauer 
Cc: Guennadi Liakhovetski 
Cc: Shawn Guo 
Cc: Yong Wang 
Cc: Tomoya MORINAGA 
Cc: Boojin Kim 
Cc: Barry Song 
Acked-by: Mika Westerberg 
Acked-by: Linus Walleij 
Acked-by: Viresh Kumar 
Acked-by: Nicolas Ferre 
Signed-off-by: Vinod Koul

dmaengine: shdma: add .needs_tend_set / .no_dmars flags

2011-06-21T08:56:11+00:00

Signed-off-by: Kuninori Morimoto 
Signed-off-by: Paul Mundt

dmaengine: shdma: add dmaor_is_32bit flag

2011-06-21T08:56:07+00:00

Signed-off-by: Kuninori Morimoto 
Signed-off-by: Paul Mundt