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/ipu/ipu_idmac.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'drivers/dma/ipu') diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c index 39e7fb2a90e3..b9cef8b1701c 100644 --- a/drivers/dma/ipu/ipu_idmac.c +++ b/drivers/dma/ipu/ipu_idmac.c @@ -1646,15 +1646,16 @@ static void idmac_free_chan_resources(struct dma_chan *chan) tasklet_schedule(&to_ipu(idmac)->tasklet); } -static enum dma_status idmac_is_tx_complete(struct dma_chan *chan, - dma_cookie_t cookie, dma_cookie_t *done, dma_cookie_t *used) +static enum dma_status idmac_tx_status(struct dma_chan *chan, + dma_cookie_t cookie, struct dma_tx_state *txstate) { struct idmac_channel *ichan = to_idmac_chan(chan); - if (done) - *done = ichan->completed; - if (used) - *used = chan->cookie; + if (txstate) { + txstate->last = ichan->completed; + txstate->used = chan->cookie; + txstate->residue = 0; + } if (cookie != chan->cookie) return DMA_ERROR; return DMA_SUCCESS; @@ -1673,7 +1674,7 @@ static int __init ipu_idmac_init(struct ipu *ipu) dma->dev = ipu->dev; dma->device_alloc_chan_resources = idmac_alloc_chan_resources; dma->device_free_chan_resources = idmac_free_chan_resources; - dma->device_is_tx_complete = idmac_is_tx_complete; + dma->device_tx_status = idmac_tx_status; dma->device_issue_pending = idmac_issue_pending; /* Compulsory for DMA_SLAVE fields */ -- cgit v1.2.3