Commit Graph

4 Commits

Author SHA1 Message Date
Mika Westerberg 10d48b3934 ARM: 6440/1: ep93xx: DMA: fix channel_disable
When channel_disable() is called, it disables per channel interrupts and
waits until channels state becomes STATE_STALL, and then disables the
channel. Now, if the DMA transfer is disabled while the channel is in
STATE_NEXT we will not wait anything and disable the channel immediately.
This seems to cause weird data corruption for example in audio transfers.

Fix is to wait while we are in STATE_NEXT or STATE_ON and only then
disable the channel.

Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-10-12 22:43:19 +01:00
Hartley Sweeten f3f1882ca7 ARM: 5876/1: ep93xx: use pr_fmt in dma-m2p.c
Use pr_fmt to prefix kernel output with the module name.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-12 12:38:32 +00:00
Hartley Sweeten a0b98ec87d [ARM] 5595/1: ep93xx: missing header in dma-m2p.c
<linux/io.h> was getting included by <mach/ts72xx.h>, is should be
included by this file.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-09 16:11:48 +01:00
Ryan Mallon 6d831c6554 [ARM] 5414/2: ep93xx m2p dma core
Add m2p dma support to the ep93xx

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-03-03 12:20:11 +00:00