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DMAENGINE: generic channel status v2

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Convert the device_is_tx_complete() operation on the
DMA engine to a generic device_tx_status()operation which
can return three states, DMA_TX_RUNNING, DMA_TX_COMPLETE,
DMA_TX_PAUSED.

[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 16:50:49 -07:00
committed by Dan Williams
parent c3635c78e5
commit 0793448187
19 changed files with 203 additions and 172 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/dma/fsldma.c
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@ -971,13 +971,12 @@ static void fsl_dma_memcpy_issue_pending(struct dma_chan *dchan)
}
/**
* fsl_dma_is_complete - Determine the DMA status
* fsl_tx_status - Determine the DMA status
* @chan : Freescale DMA channel
*/
static enum dma_status fsl_dma_is_complete(struct dma_chan *dchan,
static enum dma_status fsl_tx_status(struct dma_chan *dchan,
dma_cookie_t cookie,
dma_cookie_t *done,
dma_cookie_t *used)
struct dma_tx_state *txstate)
{
struct fsldma_chan *chan = to_fsl_chan(dchan);
dma_cookie_t last_used;
@ -988,11 +987,11 @@ static enum dma_status fsl_dma_is_complete(struct dma_chan *dchan,
last_used = dchan->cookie;
last_complete = chan->completed_cookie;
if (done)
*done = last_complete;
if (used)
*used = last_used;
if (txstate) {
txstate->last = last_complete;
txstate->used = last_used;
txstate->residue = 0;
}
return dma_async_is_complete(cookie, last_complete, last_used);
}
@ -1336,7 +1335,7 @@ static int __devinit fsldma_of_probe(struct of_device *op,
fdev->common.device_free_chan_resources = fsl_dma_free_chan_resources;
fdev->common.device_prep_dma_interrupt = fsl_dma_prep_interrupt;
fdev->common.device_prep_dma_memcpy = fsl_dma_prep_memcpy;
fdev->common.device_is_tx_complete = fsl_dma_is_complete;
fdev->common.device_tx_status = fsl_tx_status;
fdev->common.device_issue_pending = fsl_dma_memcpy_issue_pending;
fdev->common.device_prep_slave_sg = fsl_dma_prep_slave_sg;
fdev->common.device_control = fsl_dma_device_control;