From 0793448187643b50af89d36b08470baf45a3cab4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 26 Mar 2010 16:50:49 -0700 Subject: 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 Acked-by: Mark Brown Cc: Maciej Sosnowski Cc: Nicolas Ferre Cc: Pavel Machek Cc: Li Yang Cc: Guennadi Liakhovetski Cc: Paul Mundt Cc: Ralf Baechle Cc: Haavard Skinnemoen Cc: Magnus Damm Cc: Liam Girdwood Cc: Joe Perches Cc: Roland Dreier Signed-off-by: Dan Williams --- drivers/dma/ppc4xx/adma.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) (limited to 'drivers/dma/ppc4xx/adma.c') 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 */ -- cgit v1.2.1 From bca3469205402d9fb14060d255d8786ae2256640 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 26 Mar 2010 16:52:10 -0700 Subject: dmaengine: provide helper for setting txstate Simple conditional struct filler to cut out some duplicated code. Signed-off-by: Dan Williams --- drivers/dma/ppc4xx/adma.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) (limited to 'drivers/dma/ppc4xx/adma.c') diff --git a/drivers/dma/ppc4xx/adma.c b/drivers/dma/ppc4xx/adma.c index d9a54c018652..5558419876e8 100644 --- a/drivers/dma/ppc4xx/adma.c +++ b/drivers/dma/ppc4xx/adma.c @@ -3951,11 +3951,7 @@ static enum dma_status ppc440spe_adma_tx_status(struct dma_chan *chan, last_used = chan->cookie; last_complete = ppc440spe_chan->completed_cookie; - if (txstate) { - txstate->last = last_complete; - txstate->used = last_used; - txstate->residue = 0; - } + dma_set_tx_state(txstate, last_complete, last_used, 0); ret = dma_async_is_complete(cookie, last_complete, last_used); if (ret == DMA_SUCCESS) @@ -3966,11 +3962,7 @@ static enum dma_status ppc440spe_adma_tx_status(struct dma_chan *chan, last_used = chan->cookie; last_complete = ppc440spe_chan->completed_cookie; - if (txstate) { - txstate->last = last_complete; - txstate->used = last_used; - txstate->residue = 0; - } + dma_set_tx_state(txstate, last_complete, last_used, 0); return dma_async_is_complete(cookie, last_complete, last_used); } -- cgit v1.2.1