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dmaengine: consolidate tx_status functions

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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>
This commit is contained in:
Russell King - ARM Linux
2012-03-06 22:35:27 +00:00
committed by Vinod Koul
parent f7fbce07c6
commit 96a2af41c7
23 changed files with 92 additions and 234 deletions
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13
drivers/dma/coh901318.c
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@@ -1151,17 +1151,12 @@ coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
struct dma_tx_state *txstate)
{
struct coh901318_chan *cohc = to_coh901318_chan(chan);
dma_cookie_t last_used;
dma_cookie_t last_complete;
int ret;
enum dma_status ret;
last_complete = chan->completed_cookie;
last_used = chan->cookie;
ret = dma_cookie_status(chan, cookie, txstate);
/* FIXME: should be conditional on ret != DMA_SUCCESS? */
dma_set_residue(txstate, coh901318_get_bytes_left(chan));
ret = dma_async_is_complete(cookie, last_complete, last_used);
dma_set_tx_state(txstate, last_complete, last_used,
coh901318_get_bytes_left(chan));
if (ret == DMA_IN_PROGRESS && cohc->stopped)
ret = DMA_PAUSED;