spi: Fix parameter types for spi functions

1. Use size_t instead of unsigned int for bytes_out and bytes_in.
2. Use const attribute for spi_slave structure passed into xfer, claim
bus and release bus functions.

BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully

Change-Id: Ie70b3520b51c42d750f907892545510c6058f85a
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17682
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

4 files changed, 17 insertions, 17 deletions

diff --git a/src/southbridge/amd/agesa/hudson/spi.c b/src/southbridge/amd/agesa/hudson/spi.c
index f1a82e9022..7bb0e3f124 100644
--- a/src/southbridge/amd/agesa/hudson/spi.c
+++ b/src/southbridge/amd/agesa/hudson/spi.c
@@ -90,13 +90,13 @@ unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len)
 	return min(AMD_SB_SPI_TX_LEN - cmd_len, buf_len);
 }
 
-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)
 {
 	/* First byte is cmd which can not being sent through FIFO. */
 	u8 cmd = *(u8 *)dout++;
 	u8 readoffby1;
-	u8 count;
+	size_t count;
 
 	bytesout--;
 
@@ -147,13 +147,13 @@ int spi_xfer(struct spi_slave *slave, const void *dout,
 	return 0;
 }
 
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
 {
 	/* Nothing is required. */
 	return 0;
 }
 
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
 {
 	/* Nothing is required. */
 }
diff --git a/src/southbridge/amd/cimx/sb800/spi.c b/src/southbridge/amd/cimx/sb800/spi.c
index 726d8e0129..2522c2e5b5 100644
--- a/src/southbridge/amd/cimx/sb800/spi.c
+++ b/src/southbridge/amd/cimx/sb800/spi.c
@@ -59,14 +59,14 @@ unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len)
 	return min(AMD_SB_SPI_TX_LEN - cmd_len, buf_len);
 }
 
-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)
 {
 	/* First byte is cmd which can not being sent through FIFO. */
 	u8 cmd = *(u8 *)dout++;
 	u8 readoffby1;
 	u8 readwrite;
-	u8 count;
+	size_t count;
 
 	bytesout--;
 
@@ -138,13 +138,13 @@ static void ImcWakeup(void)
 	WaitForEcLDN9MailboxCmdAck();
 }
 
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
 {
 	/* Nothing is required. */
 	return 0;
 }
 
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
 {
 	/* Nothing is required. */
 	return;
diff --git a/src/southbridge/amd/sb700/spi.c b/src/southbridge/amd/sb700/spi.c
index fa316f16e6..2b1ae2dcc8 100644
--- a/src/southbridge/amd/sb700/spi.c
+++ b/src/southbridge/amd/sb700/spi.c
@@ -65,13 +65,13 @@ static void execute_command(void)
 		(read8((void *)(spibar+3)) & 0x80));
 }
 
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
 {
 	/* Handled internally by the SB700 */
 	return 0;
 }
 
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
 {
 	/* Handled internally by the SB700 */
 }
@@ -89,14 +89,14 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
 	return slave;
 }
 
-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)
 {
 	/* First byte is cmd which cannot be sent through the FIFO. */
 	u8 cmd = *(u8 *)dout++;
 	u8 readoffby1;
 	u8 readwrite;
-	u8 count;
+	size_t count;
 
 	uint32_t spibar = get_spi_bar();
 
diff --git a/src/southbridge/amd/sb700/spi.h b/src/southbridge/amd/sb700/spi.h
index ed5b8588fe..605f3eedf2 100644
--- a/src/southbridge/amd/sb700/spi.h
+++ b/src/southbridge/amd/sb700/spi.h
@@ -13,5 +13,5 @@
  * GNU General Public License for more details.
  */
 
-int spi_claim_bus(struct spi_slave *slave);
-void spi_release_bus(struct spi_slave *slave);
+int spi_claim_bus(const struct spi_slave *slave);
+void spi_release_bus(const struct spi_slave *slave);