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authorRussell King - ARM Linux <linux@arm.linux.org.uk>2012-03-07 02:35:27 +0400
committerVinod Koul <vinod.koul@linux.intel.com>2012-03-13 10:07:14 +0400
commit96a2af41c78b1fbb1f567a3486bdc63f7b31c5fd (patch)
treed977c6b2ff1a23dfd523e70315ebe976a3f3f079 /drivers/dma/amba-pl08x.c
parentf7fbce07c6ce26a25b4e0cb5f241c361fde87901 (diff)
downloadlinux-96a2af41c78b1fbb1f567a3486bdc63f7b31c5fd.tar.xz
dmaengine: consolidate tx_status functions
Now that we have the completed cookie in the dma_chan structure, we can consolidate the tx_status functions by providing a function to set the txstate structure and returning the DMA status. We also provide a separate helper to set the residue for cookies which are still in progress. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Diffstat (limited to 'drivers/dma/amba-pl08x.c')
-rw-r--r--drivers/dma/amba-pl08x.c22
1 files changed, 4 insertions, 18 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 346327572cfb..810f696eda4e 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -964,31 +964,17 @@ static enum dma_status pl08x_dma_tx_status(struct dma_chan *chan,
dma_cookie_t cookie, struct dma_tx_state *txstate)
{
struct pl08x_dma_chan *plchan = to_pl08x_chan(chan);
- dma_cookie_t last_used;
- dma_cookie_t last_complete;
enum dma_status ret;
- u32 bytesleft = 0;
- last_used = plchan->chan.cookie;
- last_complete = plchan->chan.completed_cookie;
-
- ret = dma_async_is_complete(cookie, last_complete, last_used);
- if (ret == DMA_SUCCESS) {
- dma_set_tx_state(txstate, last_complete, last_used, 0);
+ ret = dma_cookie_status(chan, cookie, txstate);
+ if (ret == DMA_SUCCESS)
return ret;
- }
/*
* This cookie not complete yet
+ * Get number of bytes left in the active transactions and queue
*/
- last_used = plchan->chan.cookie;
- last_complete = plchan->chan.completed_cookie;
-
- /* Get number of bytes left in the active transactions and queue */
- bytesleft = pl08x_getbytes_chan(plchan);
-
- dma_set_tx_state(txstate, last_complete, last_used,
- bytesleft);
+ dma_set_residue(txstate, pl08x_getbytes_chan(plchan));
if (plchan->state == PL08X_CHAN_PAUSED)
return DMA_PAUSED;