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, 11 insertions, 11 deletions

diff --git a/src/soc/qualcomm/ipq40xx/include/soc/spi.h b/src/soc/qualcomm/ipq40xx/include/soc/spi.h
index 1fd6a571ca..8ef1fbf69d 100644
--- a/src/soc/qualcomm/ipq40xx/include/soc/spi.h
+++ b/src/soc/qualcomm/ipq40xx/include/soc/spi.h
@@ -186,7 +186,7 @@ struct ipq_spi_slave {
 	int allocated;
 };
 
-static inline struct ipq_spi_slave *to_ipq_spi(struct spi_slave *slave)
+static inline struct ipq_spi_slave *to_ipq_spi(const struct spi_slave *slave)
 {
 	return container_of(slave, struct ipq_spi_slave, slave);
 }
diff --git a/src/soc/qualcomm/ipq40xx/spi.c b/src/soc/qualcomm/ipq40xx/spi.c
index dcd00c0065..871f24b254 100644
--- a/src/soc/qualcomm/ipq40xx/spi.c
+++ b/src/soc/qualcomm/ipq40xx/spi.c
@@ -320,7 +320,7 @@ static int spi_hw_init(struct ipq_spi_slave *ds)
 	return SUCCESS;
 }
 
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
 {
 	struct ipq_spi_slave *ds = to_ipq_spi(slave);
 	unsigned int ret;
@@ -332,7 +332,7 @@ int spi_claim_bus(struct spi_slave *slave)
 	return SUCCESS;
 }
 
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
 {
 	struct ipq_spi_slave *ds = to_ipq_spi(slave);
 
@@ -341,7 +341,7 @@ void spi_release_bus(struct spi_slave *slave)
 	ds->initialized = 0;
 }
 
-static void write_force_cs(struct spi_slave *slave, int assert)
+static void write_force_cs(const struct spi_slave *slave, int assert)
 {
 	struct ipq_spi_slave *ds = to_ipq_spi(slave);
 
@@ -633,8 +633,8 @@ static int blsp_spi_write(struct ipq_spi_slave *ds, u8 *cmd_buffer,
  * This function is invoked with either tx_buf or rx_buf.
  * Calling this function with both null does a chip select change.
  */
-int spi_xfer(struct spi_slave *slave, const void *dout,
-	     unsigned out_bytes, void *din, unsigned in_bytes)
+int spi_xfer(const struct spi_slave *slave, const void *dout,
+	     size_t out_bytes, void *din, size_t in_bytes)
 {
 	struct ipq_spi_slave *ds = to_ipq_spi(slave);
 	u8 *txp = (u8 *)dout;
diff --git a/src/soc/qualcomm/ipq806x/include/soc/spi.h b/src/soc/qualcomm/ipq806x/include/soc/spi.h
index 4f6f055e61..5dedcdafba 100644
--- a/src/soc/qualcomm/ipq806x/include/soc/spi.h
+++ b/src/soc/qualcomm/ipq806x/include/soc/spi.h
@@ -271,7 +271,7 @@ struct ipq_spi_slave {
 	int allocated;
 };
 
-static inline struct ipq_spi_slave *to_ipq_spi(struct spi_slave *slave)
+static inline struct ipq_spi_slave *to_ipq_spi(const struct spi_slave *slave)
 {
 	return container_of(slave, struct ipq_spi_slave, slave);
 }
diff --git a/src/soc/qualcomm/ipq806x/spi.c b/src/soc/qualcomm/ipq806x/spi.c
index 71a8c29085..d1af7201fa 100644
--- a/src/soc/qualcomm/ipq806x/spi.c
+++ b/src/soc/qualcomm/ipq806x/spi.c
@@ -618,7 +618,7 @@ static int spi_hw_init(struct ipq_spi_slave *ds)
 	return SUCCESS;
 }
 
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
 {
 	struct ipq_spi_slave *ds = to_ipq_spi(slave);
 	unsigned int ret;
@@ -641,7 +641,7 @@ int spi_claim_bus(struct spi_slave *slave)
 	return SUCCESS;
 }
 
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
 {
 	struct ipq_spi_slave *ds = to_ipq_spi(slave);
 
@@ -711,8 +711,8 @@ unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len)
 	return min(MAX_PACKET_COUNT, buf_len);
 }
 
-int spi_xfer(struct spi_slave *slave, const void *dout,
-	     unsigned out_bytes, void *din, unsigned in_bytes)
+int spi_xfer(const struct spi_slave *slave, const void *dout,
+	     size_t out_bytes, void *din, size_t in_bytes)
 {
 	int ret;
 	struct ipq_spi_slave *ds = to_ipq_spi(slave);