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DMAENGINE: generic slave control v2

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Convert the device_terminate_all() operation on the
DMA engine to a generic device_control() operation
which can now optionally support also pausing and
resuming DMA on a certain channel. Implemented for the
COH 901 318 DMAC as an example.

[dan.j.williams@intel.com: update for timberdale]
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Li Yang <leoli@freescale.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: Magnus Damm <damm@opensource.se>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Joe Perches <joe@perches.com>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Linus Walleij
2010-03-26 16:44:01 -07:00
committed by Dan Williams
parent 0f65169b1b
commit c3635c78e5
15 changed files with 117 additions and 57 deletions
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2
drivers/serial/sh-sci.c
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@@ -1087,7 +1087,7 @@ static void work_fn_rx(struct work_struct *work)
unsigned long flags;
int count;
chan->device->device_terminate_all(chan);
chan->device->device_control(chan, DMA_TERMINATE_ALL);
dev_dbg(port->dev, "Read %u bytes with cookie %d\n",
sh_desc->partial, sh_desc->cookie);