Unverified Commit af4b2dc4 authored by Miquel Raynal's avatar Miquel Raynal Committed by Mark Brown
Browse files

spi: spi-mem: Create a repeated address operation 



In octal DTR mode addresses may either be long enough to cover at least
two bytes (in which case the existing macro works), or otherwise for
single byte addresses, the byte must also be duplicated and sent twice:
on each front of the clock.

Create a macro for this common case.

Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20260109-winbond-v6-17-rc1-oddr-v2-2-1fff6a2ddb80@bootlin.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0196932f

include/linux/spi/spi-mem.h

+8 −0
Original line number Diff line number Diff line
@@ -43,6 +43,14 @@ 
		.dtr = true,					\

	}



#define SPI_MEM_DTR_OP_RPT_ADDR(__val, __buswidth)		\

	{							\

		.nbytes = 2,					\

		.val = __val | __val << 8,			\

		.buswidth = __buswidth,				\

		.dtr = true,					\

	}



#define SPI_MEM_OP_NO_ADDR	{ }



#define SPI_MEM_OP_DUMMY(__nbytes, __buswidth)			\