[PATCH v2 01/14] spi: spi-mem: Add DTR templates for cmd, address, dummy and data phase

Apurva Nandan
2021-10-11T21:40:45Z

Setting dtr field of spi_mem_op is useful when creating templates
for DTR ops in spinand.h. Also, 2 bytes cmd phases are required when
operating in Octal DTR SPI mode.

Create new templates for dtr mode cmd, address, dummy and data phase
in spi_mem_op, which set the dtr field to 1 and also allow passing
the nbytes for the cmd phase.

Signed-off-by: Apurva Nandan <a-nandan@ti.com>
---
include/linux/spi/spi-mem.h | 41 +++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)

diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index 85e2ff7b840d..4a99e26aa0b6 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -20,6 +20,14 @@
.nbytes = 1, \
}

+#define SPI_MEM_OP_CMD_DTR(__nbytes, __opcode, __buswidth) \
+ { \
+ .buswidth = __buswidth, \
+ .opcode = __opcode, \
+ .nbytes = __nbytes, \
+ .dtr = 1, \
+ }
+
#define SPI_MEM_OP_ADDR(__nbytes, __val, __buswidth) \
{ \
.nbytes = __nbytes, \
@@ -27,6 +35,14 @@
.buswidth = __buswidth, \
}

+#define SPI_MEM_OP_ADDR_DTR(__nbytes, __val, __buswidth) \
+ { \
+ .nbytes = __nbytes, \
+ .val = __val, \
+ .buswidth = __buswidth, \
+ .dtr = 1, \
+ }
+
#define SPI_MEM_OP_NO_ADDR { }

#define SPI_MEM_OP_DUMMY(__nbytes, __buswidth) \
@@ -35,6 +51,13 @@
.buswidth = __buswidth, \
}

+#define SPI_MEM_OP_DUMMY_DTR(__nbytes, __buswidth) \
+ { \
+ .nbytes = __nbytes, \
+ .buswidth = __buswidth, \
+ .dtr = 1, \
+ }
+
#define SPI_MEM_OP_NO_DUMMY { }

#define SPI_MEM_OP_DATA_IN(__nbytes, __buf, __buswidth) \
@@ -45,6 +68,15 @@
.buswidth = __buswidth, \
}

+#define SPI_MEM_OP_DATA_IN_DTR(__nbytes, __buf, __buswidth) \
+ { \
+ .dir = SPI_MEM_DATA_IN, \
+ .nbytes = __nbytes, \
+ .buf.in = __buf, \
+ .buswidth = __buswidth, \
+ .dtr = 1, \
+ }
+
#define SPI_MEM_OP_DATA_OUT(__nbytes, __buf, __buswidth) \
{ \
.dir = SPI_MEM_DATA_OUT, \
@@ -53,6 +85,15 @@
.buswidth = __buswidth, \
}

+#define SPI_MEM_OP_DATA_OUT_DTR(__nbytes, __buf, __buswidth) \
+ { \
+ .dir = SPI_MEM_DATA_OUT, \
+ .nbytes = __nbytes, \
+ .buf.out = __buf, \
+ .buswidth = __buswidth, \
+ .dtr = 1, \
+ }
+
#define SPI_MEM_OP_NO_DATA { }

/**
--
2.25.1