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authorLinus Walleij <linus.walleij@stericsson.com>2010-03-27 02:50:49 +0300
committerDan Williams <dan.j.williams@intel.com>2010-03-27 02:50:49 +0300
commit0793448187643b50af89d36b08470baf45a3cab4 (patch)
treeb3313ff58d47e26a8cf707d196177effa1aadfbe /drivers/dma/mpc512x_dma.c
parentc3635c78e500a52c9fcd55de381a72928d9e054d (diff)
downloadlinux-0793448187643b50af89d36b08470baf45a3cab4.tar.xz
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/mpc512x_dma.c')
-rw-r--r--drivers/dma/mpc512x_dma.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/dma/mpc512x_dma.c b/drivers/dma/mpc512x_dma.c
index 3fdf1f46bd63..cb3a8e94ea48 100644
--- a/drivers/dma/mpc512x_dma.c
+++ b/drivers/dma/mpc512x_dma.c
@@ -540,8 +540,8 @@ static void mpc_dma_issue_pending(struct dma_chan *chan)
/* Check request completion status */
static enum dma_status
-mpc_dma_is_tx_complete(struct dma_chan *chan, dma_cookie_t cookie,
- dma_cookie_t *done, dma_cookie_t *used)
+mpc_dma_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
+ struct dma_tx_state *txstate)
{
struct mpc_dma_chan *mchan = dma_chan_to_mpc_dma_chan(chan);
unsigned long flags;
@@ -553,11 +553,11 @@ mpc_dma_is_tx_complete(struct dma_chan *chan, dma_cookie_t cookie,
last_complete = mchan->completed_cookie;
spin_unlock_irqrestore(&mchan->lock, flags);
- 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);
}
@@ -693,7 +693,7 @@ static int __devinit mpc_dma_probe(struct of_device *op,
dma->device_alloc_chan_resources = mpc_dma_alloc_chan_resources;
dma->device_free_chan_resources = mpc_dma_free_chan_resources;
dma->device_issue_pending = mpc_dma_issue_pending;
- dma->device_is_tx_complete = mpc_dma_is_tx_complete;
+ dma->device_tx_status = mpc_dma_tx_status;
dma->device_prep_dma_memcpy = mpc_dma_prep_memcpy;
INIT_LIST_HEAD(&dma->channels);