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dmaengine: imx-sdma: Add a new DMATYPE for Shared Peripheral ASRC

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Shared Peripheral ASRC, running on SPBA, needs to use shp sciprts for
DMA transfer. So this patch just adds a new DMATYPE for it.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Nicolin Chen 2014-06-16 11:31:05 +08:00 committed by Vinod Koul
parent 0b3518652c
commit f892afb07e
3 changed files with 7 additions and 0 deletions
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1
Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
View File

@ -47,6 +47,7 @@ The full ID of peripheral types can be found below.
20 ASRC
21 ESAI
22 SSI Dual FIFO (needs firmware ver >= 2)
23 Shared ASRC
The third cell specifies the transfer priority as below.

5
drivers/dma/imx-sdma.c
View File

@ -750,6 +750,11 @@ static void sdma_get_pc(struct sdma_channel *sdmac,
emi_2_per = sdma->script_addrs->asrc_2_mcu_addr;
per_2_per = sdma->script_addrs->per_2_per_addr;
break;
case IMX_DMATYPE_ASRC_SP:
per_2_emi = sdma->script_addrs->shp_2_mcu_addr;
emi_2_per = sdma->script_addrs->mcu_2_shp_addr;
per_2_per = sdma->script_addrs->per_2_per_addr;
break;
case IMX_DMATYPE_MSHC:
per_2_emi = sdma->script_addrs->mshc_2_mcu_addr;
emi_2_per = sdma->script_addrs->mcu_2_mshc_addr;

1
include/linux/platform_data/dma-imx.h
View File

@ -40,6 +40,7 @@ enum sdma_peripheral_type {
IMX_DMATYPE_ASRC, /* ASRC */
IMX_DMATYPE_ESAI, /* ESAI */
IMX_DMATYPE_SSI_DUAL, /* SSI Dual FIFO */
IMX_DMATYPE_ASRC_SP, /* Shared ASRC */
};
enum imx_dma_prio {