dmaengine: dw-edma: Add writeq() and readq() for 64 bits architectures

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Add writeq() and readq() for 64 bits architures support.

Supporting these two functions will allow the write or the read of eDMA
64 bits registers at once instead of having two consecutive operations.

Also, this improvement will allow the PCI optimization transaction
messages, which will generate a 64 bits message instead of two messages
of 32 bits.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Link: https://lore.kernel.org/r/3f1120f7c6003b38ec8b851fc68936007c4d9fd8.1613674948.git.gustavo.pimentel@synopsys.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Gustavo Pimentel 2021-02-18 20:03:55 +01:00 • committed by Vinod Koul

parent 50db2050fa

commit 04e0a39fc1

3 changed files with 326 additions and 125 deletions

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254

drivers/dma/dw-edma/dw-edma-v0-core.c

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48

drivers/dma/dw-edma/dw-edma-v0-debugfs.c

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149

drivers/dma/dw-edma/dw-edma-v0-regs.h

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