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mmc: dw_mmc: Add IDMAC 64-bit address mode support

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Synopsys DW_MMC IP core supports Internal DMA Controller with 64-bit address mode from IP version 2.70a onwards.
Updated the driver to support IDMAC 64-bit addressing mode.

Signed-off-by: Prabu Thangamuthu <prabu.t@synopsys.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Prabu Thangamuthu 2014-10-20 07:12:33 +00:00 • committed by Ulf Hansson
parent e765bfa22a
commit 69d99fdcfd
3 changed files with 175 additions and 39 deletions
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2
include/linux/mmc/dw_mmc.h
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@ -54,6 +54,7 @@ struct mmc_data;
* transfer is in progress.
* @use_dma: Whether DMA channel is initialized or not.
* @using_dma: Whether DMA is in use for the current transfer.
* @dma_64bit_address: Whether DMA supports 64-bit address mode or not.
* @sg_dma: Bus address of DMA buffer.
* @sg_cpu: Virtual address of DMA buffer.
* @dma_ops: Pointer to platform-specific DMA callbacks.
@ -139,6 +140,7 @@ struct dw_mci {
/* DMA interface members*/
int use_dma;
int using_dma;
int dma_64bit_address;
dma_addr_t sg_dma;
void *sg_cpu;