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dmaengine: qcom: gpi: Set link_rx bit on GO TRE for rx operation

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[ Upstream commit 25e8ac233d ]

Rx operation on SPI GSI DMA is currently not working.
As per GSI spec, link_rx bit is to be set on GO TRE on tx
channel whenever there is going to be a DMA TRE on rx
channel. This is currently set for duplex operation only.

Set the bit for rx operation as well.
This is part of changes required to bring up Rx.

Fixes: 94b8f0e58f ("dmaengine: qcom: gpi: set chain and link flag for duplex")
Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@quicinc.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/1671212293-14767-1-git-send-email-quic_vnivarth@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vijaya Krishna Nivarthi 2022-12-16 23:08:13 +05:30 committed by Greg Kroah-Hartman
parent 7b91820fd7
commit 1ec7096910
1 changed files with 1 additions and 0 deletions
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1
drivers/dma/qcom/gpi.c
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@ -1756,6 +1756,7 @@ static int gpi_create_spi_tre(struct gchan *chan, struct gpi_desc *desc,
tre->dword[3] = u32_encode_bits(TRE_TYPE_GO, TRE_FLAGS_TYPE);
if (spi->cmd == SPI_RX) {
tre->dword[3] |= u32_encode_bits(1, TRE_FLAGS_IEOB);
tre->dword[3] |= u32_encode_bits(1, TRE_FLAGS_LINK);
} else if (spi->cmd == SPI_TX) {
tre->dword[3] |= u32_encode_bits(1, TRE_FLAGS_CHAIN);
} else { /* SPI_DUPLEX */