20 Oct, 2017
1 commit
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Since this driver checks if the return value of dma_map_sg() is minus
or not and keeps to enable the DMAC, it may cause kernel panic when
the dma_map_sg() returns 0. So, this patch fixes the issue.Reported-by: Dirk Behme
Fixes: 2a68ea7896e3 ("mmc: renesas-sdhi: add support for R-Car Gen3 SDHI DMAC")
Signed-off-by: Yoshihiro Shimoda
Reviewed-by: Geert Uytterhoeven
Acked-by: Wolfram Sang
Signed-off-by: Ulf Hansson
30 Aug, 2017
4 commits
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There is one SDHI instance on Gen2 which does not have the CBSY bit.
So, turn CBSY usage into an extra flag and set it accordingly. This has
the additional advantage that we can also set it for other incarnations
later.Signed-off-by: Wolfram Sang
Tested-by: Chris Brandt
Reviewed-by: Simon Horman
Signed-off-by: Ulf Hansson -
The structure renesas_sdhi_internal_dmac_dma_ops is only passed as
the second argument to renesas_sdhi_probe, which is const, so
renesas_sdhi_internal_dmac_dma_ops can be const too.Done with the help of Coccinelle.
Signed-off-by: Julia Lawall
Signed-off-by: Ulf Hansson -
Provide a whitelist for Gen3 SoC ES versions for both the SYS DMAC and
internal DMAC variants of the SDHI driver. This is to allow drivers to
only initialise for Gen3 SoC ES versions for which they are the appropriate
DMAC implementation. Currently internal DMAC is the appropriate
implementation for all supported Gen3 SoC ES versions.Signed-off-by: Simon Horman
Reviewed-by: Wolfram Sang
Signed-off-by: Ulf Hansson -
Add a new variant of the SDHI driver to support R-Car Gen3 with DMA via
on-chip bus mastering. Since the DMAC is in a part of the SDHI module it
is not suitable to be used via DMA Engine.Clearing of DM_CM_INFO1 after DMA thanks to Dirk Behme
Cc: Dirk Behme
Signed-off-by: Yoshihiro Shimoda
Signed-off-by: Ai Kyuse
Signed-off-by: Simon Horman
Reviewed-by: Wolfram Sang
Signed-off-by: Ulf Hansson
