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authorBoris Brezillon <boris.brezillon@bootlin.com>2018-11-06 17:05:31 +0100
committerMark Brown <broonie@kernel.org>2018-11-20 16:26:26 +0000
commit0ebb261a0b2d090de618a383d2378d4a00834958 (patch)
tree51563f70576044f4641a4e20399e6e7ccd18cb5d /include/linux/spi
parent6afe76a6723975391d06c42a422370a588395f84 (diff)
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spi: spi-mem: Add SPI_MEM_NO_DATA to the spi_mem_data_dir enum
When defining spi_mem_op templates we don't necessarily know the size that will be passed when the template is actually used, and basing the supports_op() check on op->data.nbytes to know whether there will be data transferred for a specific operation is this not possible. Add SPI_MEM_NO_DATA to the spi_mem_data_dir enum so that we can base our checks on op->data.dir instead of op->data.nbytes. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/spi')
-rw-r--r--include/linux/spi/spi-mem.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index 867839cc69a7..250b6f5c47c2 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -57,10 +57,12 @@
/**
* enum spi_mem_data_dir - describes the direction of a SPI memory data
* transfer from the controller perspective
+ * @SPI_MEM_NO_DATA: no data transferred
* @SPI_MEM_DATA_IN: data coming from the SPI memory
* @SPI_MEM_DATA_OUT: data sent to the SPI memory
*/
enum spi_mem_data_dir {
+ SPI_MEM_NO_DATA,
SPI_MEM_DATA_IN,
SPI_MEM_DATA_OUT,
};