linux-toradex.git/drivers/dma, branch v4.4.93

dmaengine: edma: Align the memcpy acnt array size with the transfer

2017-10-18T07:20:41+00:00

commit 87a2f622cc6446c7d09ac655b7b9b04886f16a4c upstream.

Memory to Memory transfers does not have any special alignment needs
regarding to acnt array size, but if one of the areas are in memory mapped
regions (like PCIe memory), we need to make sure that the acnt array size
is aligned with the mem copy parameters.

Before "dmaengine: edma: Optimize memcpy operation" change the memcpy was set
up in a different way: acnt == number of bytes in a word based on
__ffs((src | dest | len), bcnt and ccnt for looping the necessary number of
words to comlete the trasnfer.

Instead of reverting the commit we can fix it to make sure that the ACNT size
is aligned to the traswnfer.

Fixes: df6694f80365a (dmaengine: edma: Optimize memcpy operation)
Signed-off-by: Peter Ujfalusi 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

dmaengine: ti-dma-crossbar: Add some 'of_node_put()' in error path.

2017-08-07T02:19:45+00:00

[ Upstream commit 75bdc7f31a3a6e9a12e218b31a44a1f54a91554c ]

Add some missing 'of_node_put()' in early exit error path.

Signed-off-by: Christophe JAILLET 
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

dmaengine: ioatdma: workaround SKX ioatdma version

2017-08-07T02:19:45+00:00

[ Upstream commit 34a31f0af84158955a9747fb5c6712da5bbb5331 ]

The Skylake ioatdma is technically CBDMA 3.2+ and contains the same hardware
bits with some additional 3.3 features, but it's not really 3.3 where the
driver is concerned.

Signed-off-by: Dave Jiang 
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

dmaengine: ioatdma: Add Skylake PCI Dev ID

2017-08-07T02:19:45+00:00

[ Upstream commit 1594c18fd297a8edcc72bc4b161f3f52603ebb92 ]

Adding Skylake Xeon PCI device ids for ioatdma and related bits.

Signed-off-by: Dave Jiang 
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

dmaengine: ep93xx: Always start from BASE0

2017-06-14T11:16:22+00:00

commit 0037ae47812b1f431cc602100d1d51f37d77b61e upstream.

The current buffer is being reset to zero on device_free_chan_resources()
but not on device_terminate_all(). It could happen that HW is restarted and
expects BASE0 to be used, but the driver is not synchronized and will start
from BASE1. One solution is to reset the buffer explicitly in
m2p_hw_setup().

Signed-off-by: Alexander Sverdlin 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

dmaengine: usb-dmac: Fix DMAOR AE bit definition

2017-06-14T11:16:21+00:00

commit 9a445bbb1607d9f14556a532453dd86d1b7e381e upstream.

This patch fixes the register definition of AE (Address Error flag) bit.

Fixes: 0c1c8ff32fa2 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver")
Signed-off-by: Hiroyuki Yokoyama 
[Shimoda: add Fixes and Cc tags in the commit log]
Signed-off-by: Yoshihiro Shimoda 
Reviewed-by: Geert Uytterhoeven 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

dmaengine: ipu: Make sure the interrupt routine checks all interrupts.

2017-03-12T05:37:30+00:00

commit adee40b265d7568296e218f079f478197ffa15bf upstream.

Commit 3d8cc00073d6 ("dmaengine: ipu: Consolidate duplicated irq handlers")
consolidated the two interrupts routines into one, but the remaining
interrupt routine only checks the status of the error interrupts, not the
normal interrupts.

This patch fixes that problem (tested on i.MX31 PDK board).

Fixes: 3d8cc00073d6 ("dmaengine: ipu: Consolidate duplicated irq handlers")
Cc: Vinod Koul 
Signed-off-by: Magnus Lilja 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

dmaengine: pl330: Fix runtime PM support for terminated transfers

2017-01-26T07:23:50+00:00

commit 5c9e6c2b2ba3ec3a442e2fb5b4286498f8b4dcb7 upstream.

PL330 DMA engine driver is leaking a runtime reference after any terminated
DMA transactions. This patch fixes this issue by tracking runtime PM state
of the device and making additional call to pm_runtime_put() in terminate_all
callback if needed.

Fixes: ae43b3289186 ("ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12")
Signed-off-by: Marek Szyprowski 
Reviewed-by: Krzysztof Kozlowski 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

dmaengine: at_xdmac: fix spurious flag status for mem2mem transfers

2016-11-18T09:48:36+00:00

commit 95da0c19d164f6df0b71a5187950f47d4b746e91 upstream.

When setting the channel configuration register, the perid field is not
set to 0 since it is useless for mem2mem transfers. Unfortunately, a
device has 0 as perid. It could cause spurious flags status because
the controller could mix some events from the two channels.
For that reason, use the highest perid value for mem2mem transfers since it
doesn't match the perid of other devices.

Signed-off-by: Ludovic Desroches 
Acked-by: Nicolas Ferre 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

dmaengine: ipu: remove bogus NO_IRQ reference

2016-10-31T10:14:00+00:00

commit 86c7e6836479c4045a9a81ed5ea76c51d719f9c1 upstream.

A workaround for a warning introduced a use of the NO_IRQ
macro that should have been gone for a long time.

It is clear from the code that the value cannot actually
be used, but apparently there was a configuration at
some point that caused a warning, so instead of just
reverting that patch, this rearranges the code in a way that
the warning cannot reappear.

Signed-off-by: Arnd Bergmann 
Fixes: 6ef41cf6f721 ("dmaengine :ipu: change ipu_irq_handler() to remove compile warning")
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman