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dmaengine: dw: introduce dw_dma_on() helper

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As an opposite to dw_dma_off() let's introduce dw_dma_on() helper. It will be
useful later as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Andy Shevchenko 2014-09-23 17:18:12 +03:00 committed by Vinod Koul
parent 3d588f83e4
commit 7a83c04543
1 changed files with 7 additions and 2 deletions
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9
drivers/dma/dw/core.c
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@ -1470,6 +1470,11 @@ static void dw_dma_off(struct dw_dma *dw)
dw->chan[i].initialized = false;
}
static void dw_dma_on(struct dw_dma *dw)
{
dma_writel(dw, CFG, DW_CFG_DMA_EN);
}
int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
{
struct dw_dma *dw;
@ -1643,7 +1648,7 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata)
dw->dma.device_tx_status = dwc_tx_status;
dw->dma.device_issue_pending = dwc_issue_pending;
dma_writel(dw, CFG, DW_CFG_DMA_EN);
dw_dma_on(dw);
err = dma_async_device_register(&dw->dma);
if (err)
@ -1705,7 +1710,7 @@ int dw_dma_resume(struct dw_dma_chip *chip)
{
struct dw_dma *dw = chip->dw;
dma_writel(dw, CFG, DW_CFG_DMA_EN);
dw_dma_on(dw);
return 0;
}
EXPORT_SYMBOL_GPL(dw_dma_resume);