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| 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/ppc4xx | |
| parent | c3635c78e500a52c9fcd55de381a72928d9e054d (diff) | |
| download | linux-stable-0793448187643b50af89d36b08470baf45a3cab4.tar.gz linux-stable-0793448187643b50af89d36b08470baf45a3cab4.tar.bz2 linux-stable-0793448187643b50af89d36b08470baf45a3cab4.zip | |
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/ppc4xx')
| -rw-r--r-- | drivers/dma/ppc4xx/adma.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index e69d87f24a25..d9a54c018652 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -3934,12 +3934,13 @@ static void ppc440spe_adma_free_chan_resources(struct dma_chan *chan) } /** - * ppc440spe_adma_is_complete - poll the status of an ADMA transaction + * ppc440spe_adma_tx_status - poll the status of an ADMA transaction * @chan: ADMA channel handle * @cookie: ADMA transaction identifier + * @txstate: a holder for the current state of the channel */ -static enum dma_status ppc440spe_adma_is_complete(struct dma_chan *chan, - dma_cookie_t cookie, dma_cookie_t *done, dma_cookie_t *used) +static enum dma_status ppc440spe_adma_tx_status(struct dma_chan *chan, + dma_cookie_t cookie, struct dma_tx_state *txstate) { struct ppc440spe_adma_chan *ppc440spe_chan; dma_cookie_t last_used; @@ -3950,10 +3951,11 @@ static enum dma_status ppc440spe_adma_is_complete(struct dma_chan *chan, last_used = chan->cookie; last_complete = ppc440spe_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; + } ret = dma_async_is_complete(cookie, last_complete, last_used); if (ret == DMA_SUCCESS) @@ -3964,10 +3966,11 @@ static enum dma_status ppc440spe_adma_is_complete(struct dma_chan *chan, last_used = chan->cookie; last_complete = ppc440spe_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); } @@ -4179,7 +4182,7 @@ static void ppc440spe_adma_init_capabilities(struct ppc440spe_adma_device *adev) ppc440spe_adma_alloc_chan_resources; adev->common.device_free_chan_resources = ppc440spe_adma_free_chan_resources; - adev->common.device_is_tx_complete = ppc440spe_adma_is_complete; + adev->common.device_tx_status = ppc440spe_adma_tx_status; adev->common.device_issue_pending = ppc440spe_adma_issue_pending; /* Set prep routines based on capability */ |