linux-toradex.git/drivers/dma/ipu, branch v2.6.34

Merge branch 'coh' into dmaengine

2010-03-04T04:22:21+00:00

async-tx: fix buffer submission error handling in ipu_idma.c

2010-02-10T19:01:06+00:00

If submitting new buffer failed, a wrong descriptor gets completed and it
doesn't check, if a callback is at all defined, which can lead to an Oops. Fix
these bugs and make ipu_update_channel_buffer() void, because it never fails.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Dan Williams

dma: cases IPU_PIX_FMT_BGRA32, BGR32 and ABGR32 are the same in ipu_ch_param_set_size()

2010-02-03T06:42:25+00:00

In these cases the same statements are executed.

Signed-off-by: Roel Kluin 
Acked-by: Guennadi Liakhovetski 
Signed-off-by: Andrew Morton 
Signed-off-by: Dan Williams

dma: fix ipu_idmac.c to not discard the last queued buffer

2009-05-12T21:41:48+00:00

This also fixes the case of a single queued buffer, for example, when taking a
single frame snapshot with the mx3_camera driver.

Reported-by: Agustin Ferrin Pozuelo 
Tested-by: Agustin Ferrin Pozuelo 
Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Dan Williams

ipu_idmac: Use disable_irq_nosync() from within irq handlers.

2009-05-05T19:16:56+00:00

disable_irq() should wait for all running handlers to complete
before returning.  As such, if it's used to disable an interrupt
from that interrupt's handler it will deadlock.  This replaces
the dangerous instances with the _nosync() variant which doesn't
have this problem.

Note the 2 handlers in question are only used #ifdef DEBUG so
I imagine these code paths don't get hit often.

Signed-off-by: Ben Nizette 
Acked-by: Guennadi Liakhovetski 
Signed-off-by: Dan Williams

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2009-04-03T19:13:45+00:00

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  dma: Add SoF and EoF debugging to ipu_idmac.c, minor cleanup
  dw_dmac: add cyclic API to DW DMA driver
  dmaengine: Add privatecnt to revert DMA_PRIVATE property
  dmatest: add dma interrupts and callbacks
  dmatest: add xor test
  dmaengine: allow dma support for async_tx to be toggled
  async_tx: provide __async_inline for HAS_DMA=n archs
  dmaengine: kill some unused headers
  dmaengine: initialize tx_list in dma_async_tx_descriptor_init
  dma: i.MX31 IPU DMA robustness improvements
  dma: improve section assignment in i.MX31 IPU DMA driver
  dma: ipu_idmac driver cosmetic clean-up
  dmaengine: fail device registration if channel registration fails

dma: Add SoF and EoF debugging to ipu_idmac.c, minor cleanup

2009-04-02T23:59:10+00:00

Add Start-of-Frame and End-of-Frame debugging to ipu_idmac.c, in the
future it might also be needed for the actual video processing in
mx3-camera, at which point, the ISRs will have to be transferred to
mx3_camera.c, for which ipu_irq_map() and ipu_irq_unmap() functions will
have to be exported.

Also simplify a couple of pointer-dereferences.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Dan Williams

dmaengine: initialize tx_list in dma_async_tx_descriptor_init

2009-03-25T16:13:24+00:00

Centralize this common initialization (and one case where ipu_idmac is
duplicating ->chan initialization).

Signed-off-by: Dan Williams

dma: i.MX31 IPU DMA robustness improvements

2009-03-25T16:13:24+00:00

Add DMA error handling to the ISR, move common code fragments to functions, fix
scatter-gather element queuing in the ISR, survive channel freeing and
re-allocation in a quick succession.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Dan Williams

dma: improve section assignment in i.MX31 IPU DMA driver

2009-03-25T16:13:24+00:00

The i.MX31 IPU DMA driver is a platform driver, but doesn't need hotplug, so we
can use __init and __exit function attributes.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Dan Williams