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drivers: dma: channel configuration for dma_stm32

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Control values when configuring the dma channel
According to the soc specification,
the dma V2 channel counts from 1.
the dma V1 stream counts from 0.

Signed-off-by: Francois Ramu <francois.ramu@st.com>
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2020-04-13 21:38:58 +02:00 • committed by Kumar Gala
commit de4ba27539
2 changed files with 34 additions and 8 deletions
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9
drivers/dma/dma_stm32.h
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@ -45,6 +45,15 @@ struct dma_stm32_config {
u32_t base;
};
#ifdef CONFIG_DMA_STM32_V1
/* from DTS the dma stream id is in range 0..<dma-requests>-1 */
#define STREAM_OFFSET 0
#else
/* from DTS the dma stream id is in range 1..<dma-requests> */
/* so decrease to set range from 0 from now on */
#define STREAM_OFFSET 1
#endif /* CONFIG_DMA_STM32_V1 */
extern u32_t table_ll_stream[];
extern u32_t (*func_ll_is_active_tc[])(DMA_TypeDef *DMAx);
extern void (*func_ll_clear_tc[])(DMA_TypeDef *DMAx);