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[1/3] spi: add SPI_RX_CPHA_FLIP mode bit

Message ID a715ca92713ca02071f33dcca9960a66a03c949a.1649702729.git.baruch@tkos.co.il (mailing list archive)
State New, archived
Headers show
Series [1/3] spi: add SPI_RX_CPHA_FLIP mode bit | expand

Commit Message

Baruch Siach April 11, 2022, 6:45 p.m. UTC 
From: Baruch Siach <baruch.siach@siklu.com>

Some SPI devices latch MOSI bits on one clock phase, but produce valid
MISO bits on the other phase. Add SPI_RX_CPHA_FLIP mode to instruct the
controller driver to flip CPHA for Rx (MISO) only transfers.

Signed-off-by: Baruch Siach <baruch.siach@siklu.com>
---
 include/uapi/linux/spi/spi.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Mark Brown April 19, 2022, 10:45 p.m. UTC | #1 
On Mon, 11 Apr 2022 21:45:27 +0300, Baruch Siach wrote:
> From: Baruch Siach <baruch.siach@siklu.com>
> 
> Some SPI devices latch MOSI bits on one clock phase, but produce valid
> MISO bits on the other phase. Add SPI_RX_CPHA_FLIP mode to instruct the
> controller driver to flip CPHA for Rx (MISO) only transfers.
> 
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/3] spi: add SPI_RX_CPHA_FLIP mode bit
      commit: b617be33502d2bfefffef71924c7a7ba50264ff6
[2/3] spi: spidev: add SPI_RX_CPHA_FLIP
      commit: 178d0cbbfe8ec652083058968c7a27485eaa33d2
[3/3] spi: spi-imx: add support for SPI_RX_CPHA_FLIP
      commit: 79422ed9bd7fbd79f84d8a5abb0094c16221f55b

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark
diff mbox series

Patch

diff --git a/include/uapi/linux/spi/spi.h b/include/uapi/linux/spi/spi.h
index 236a85f08ded..9d5f58059703 100644
--- a/include/uapi/linux/spi/spi.h
+++ b/include/uapi/linux/spi/spi.h
@@ -27,6 +27,7 @@ 
 #define	SPI_TX_OCTAL		_BITUL(13)	/* transmit with 8 wires */
 #define	SPI_RX_OCTAL		_BITUL(14)	/* receive with 8 wires */
 #define	SPI_3WIRE_HIZ		_BITUL(15)	/* high impedance turnaround */
+#define	SPI_RX_CPHA_FLIP	_BITUL(16)	/* flip CPHA on Rx only xfer */
 
 /*
  * All the bits defined above should be covered by SPI_MODE_USER_MASK.
@@ -36,6 +37,6 @@ 
  * These bits must not overlap. A static assert check should make sure of that.
  * If adding extra bits, make sure to increase the bit index below as well.
  */
-#define SPI_MODE_USER_MASK	(_BITUL(16) - 1)
+#define SPI_MODE_USER_MASK	(_BITUL(17) - 1)
 
 #endif /* _UAPI_SPI_H */