diff options
| author | Linus Walleij <linus.walleij@stericsson.com> | 2010-03-26 16:50:49 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2010-03-26 16:50:49 -0700 |
| commit | 0793448187643b50af89d36b08470baf45a3cab4 (patch) | |
| tree | b3313ff58d47e26a8cf707d196177effa1aadfbe /drivers/dma/dw_dmac.c | |
| parent | c3635c78e500a52c9fcd55de381a72928d9e054d (diff) | |
DMAENGINE: generic channel status v2
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>
Diffstat (limited to 'drivers/dma/dw_dmac.c')
| -rw-r--r-- | drivers/dma/dw_dmac.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 8a6b85f6117..263b70ee856 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -819,9 +819,9 @@ static int dwc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd) } static enum dma_status -dwc_is_tx_complete(struct dma_chan *chan, - dma_cookie_t cookie, - dma_cookie_t *done, dma_cookie_t *used) +dwc_tx_status(struct dma_chan *chan, + dma_cookie_t cookie, + struct dma_tx_state *txstate) { struct dw_dma_chan *dwc = to_dw_dma_chan(chan); dma_cookie_t last_used; @@ -841,10 +841,11 @@ dwc_is_tx_complete(struct dma_chan *chan, ret = dma_async_is_complete(cookie, last_complete, last_used); } - if (done) - *done = last_complete; - if (used) - *used = last_used; + if (txstate) { + txstate->last = last_complete; + txstate->used = last_used; + txstate->residue = 0; + } return ret; } @@ -1346,7 +1347,7 @@ static int __init dw_probe(struct platform_device *pdev) dw->dma.device_prep_slave_sg = dwc_prep_slave_sg; dw->dma.device_control = dwc_control; - dw->dma.device_is_tx_complete = dwc_is_tx_complete; + dw->dma.device_tx_status = dwc_tx_status; dw->dma.device_issue_pending = dwc_issue_pending; dma_writel(dw, CFG, DW_CFG_DMA_EN); |