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Diffstat (limited to 'src/include/spi-generic.h')
-rw-r--r--src/include/spi-generic.h13
1 files changed, 6 insertions, 7 deletions
diff --git a/src/include/spi-generic.h b/src/include/spi-generic.h
index 347ec3c202..7c53611d79 100644
--- a/src/include/spi-generic.h
+++ b/src/include/spi-generic.h
@@ -17,6 +17,7 @@
#define _SPI_GENERIC_H_
#include <stdint.h>
+#include <stddef.h>
/* Controller-specific definitions: */
@@ -67,7 +68,7 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs);
* Returns: 0 if the bus was claimed successfully, or a negative value
* if it wasn't.
*/
-int spi_claim_bus(struct spi_slave *slave);
+int spi_claim_bus(const struct spi_slave *slave);
/*-----------------------------------------------------------------------
* Release the SPI bus
@@ -78,7 +79,7 @@ int spi_claim_bus(struct spi_slave *slave);
*
* slave: The SPI slave
*/
-void spi_release_bus(struct spi_slave *slave);
+void spi_release_bus(const struct spi_slave *slave);
/*-----------------------------------------------------------------------
* SPI transfer
@@ -92,10 +93,8 @@ void spi_release_bus(struct spi_slave *slave);
*
* Returns: 0 on success, not 0 on failure
*/
-int spi_xfer(struct spi_slave *slave, const void *dout, unsigned int bytesout,
- void *din, unsigned int bytesin);
-
-
+int spi_xfer(const struct spi_slave *slave, const void *dout, size_t bytesout,
+ void *din, size_t bytesin);
unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len);
@@ -108,7 +107,7 @@ unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len);
*
* TODO: This function probably shouldn't be inlined.
*/
-static inline int spi_w8r8(struct spi_slave *slave, unsigned char byte)
+static inline int spi_w8r8(const struct spi_slave *slave, unsigned char byte)
{
unsigned char dout[2];
unsigned char din[2];