dmaengine: dw-axi-dmac: support DMAX_NUM_CHANNELS > 8

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Added support for DMA controller with more than 8 channels.
DMAC register map changes based on number of channels.

Enabling DMAC channel:
DMAC_CHENREG has to be used when number of channels <= 8
DMAC_CHENREG2 has to be used when number of channels > 8

Configuring DMA channel:
CHx_CFG has to be used when number of channels <= 8
CHx_CFG2 has to be used when number of channels > 8

Suspending and resuming channel:
DMAC_CHENREG has to be used when number of channels <= 8 DMAC_CHSUSPREG
has to be used for suspending a channel > 8

Signed-off-by: Pandith N <pandith.n@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Link: https://lore.kernel.org/r/20211001140812.24977-2-pandith.n@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Pandith N 2021-10-01 19:38:10 +05:30 • committed by Vinod Koul

parent af229d2c25

commit 824351668a

2 changed files with 109 additions and 31 deletions

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105

drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c

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35

drivers/dma/dw-axi-dmac/dw-axi-dmac.h

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