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dmaengine: dw: Split DW and iDMA 32-bit operations

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Here is a kinda big refactoring that should have been done
in the first place, when Intel iDMA 32-bit support appeared.

It splits operations which are different to Synopsys DesignWare and
Intel iDMA 32-bit controllers.

No functional change intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Andy Shevchenko 2019-01-07 13:07:38 +02:00 • committed by Vinod Koul
parent 0781657796
commit 69da8be90d
10 changed files with 343 additions and 181 deletions
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4
include/linux/dma/dw.h
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@ -45,9 +45,13 @@ struct dw_dma_chip {
#if IS_ENABLED(CONFIG_DW_DMAC_CORE)
int dw_dma_probe(struct dw_dma_chip *chip);
int dw_dma_remove(struct dw_dma_chip *chip);
int idma32_dma_probe(struct dw_dma_chip *chip);
int idma32_dma_remove(struct dw_dma_chip *chip);
#else
static inline int dw_dma_probe(struct dw_dma_chip *chip) { return -ENODEV; }
static inline int dw_dma_remove(struct dw_dma_chip *chip) { return 0; }
static inline int idma32_dma_probe(struct dw_dma_chip *chip) { return -ENODEV; }
static inline int idma32_dma_remove(struct dw_dma_chip *chip) { return 0; }
#endif /* CONFIG_DW_DMAC_CORE */
#endif /* _DMA_DW_H */