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| author | Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com> | 2025-12-01 15:42:22 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-12-14 19:38:32 +0900 |
| commit | 6f9026b5a18acdf190d1622831b100aacfca0eb3 (patch) | |
| tree | 6ae7a594a5675232336de3eb110f91cfb8dfe3af /include/linux/i2c/git@git.tavy.me:linux.git | |
| parent | 28b590bd4c6a051ec61cf286a46a8b14846e6fcf (diff) | |
spi: rzv2h-rspi: set MUST_RX/MUST_TX
In preparation for implementing DMA support, set MUST_RX and MUST_TX
flags on the controller so that we always receive non-NULL buffers.
The PIO mode already handles this manually by checking if rx_buf/tx_buf
are set on the transfer, and doing a dummy read/write if not.
DMA will not be able to implement this special handling, and although
the SPI controller advertises support for transmit-only or receive-only
transfers via SPCR's register TXMD bitfield, it does not seem to work.
Remove the special handling for PIO and let the SPI controller core
handle it.
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Link: https://patch.msgid.link/20251201134229.600817-7-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/i2c/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions