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authorFurquan Shaikh <furquan@chromium.org>2016-11-30 04:34:22 -0800
committerFurquan Shaikh <furquan@google.com>2016-12-05 03:24:38 +0100
commit0dba0254ea31eca41fdef88783f1dd192ac6fa56 (patch)
tree3c43a2ca9ff4706beb0c0df82cfd96aca75a3927 /src/soc/samsung
parent52896c6c33250036928406d9dc38aa2ce1906b05 (diff)
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>
Diffstat (limited to 'src/soc/samsung')
-rw-r--r--src/soc/samsung/exynos5420/spi.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/src/soc/samsung/exynos5420/spi.c b/src/soc/samsung/exynos5420/spi.c
index fd31a2fdf7..c2faeb5198 100644
--- a/src/soc/samsung/exynos5420/spi.c
+++ b/src/soc/samsung/exynos5420/spi.c
@@ -58,7 +58,7 @@ static struct exynos_spi_slave exynos_spi_slaves[3] = {
},
};
-static inline struct exynos_spi_slave *to_exynos_spi(struct spi_slave *slave)
+static inline struct exynos_spi_slave *to_exynos_spi(const struct spi_slave *slave)
{
return container_of(slave, struct exynos_spi_slave, slave);
}
@@ -128,7 +128,7 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
return &eslave->slave;
}
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
{
struct exynos_spi *regs = to_exynos_spi(slave)->regs;
// TODO(hungte) Add some delay if too many transactions happen at once.
@@ -137,19 +137,19 @@ int spi_claim_bus(struct spi_slave *slave)
}
static void spi_transfer(struct exynos_spi *regs, void *in, const void *out,
- u32 size)
+ size_t size)
{
u8 *inb = in;
const u8 *outb = out;
- int width = (size % 4) ? 1 : 4;
+ size_t width = (size % 4) ? 1 : 4;
while (size) {
- int packets = size / width;
+ size_t packets = size / width;
// The packet count field is 16 bits wide.
packets = MIN(packets, (1 << 16) - 1);
- int out_bytes, in_bytes;
+ size_t out_bytes, in_bytes;
out_bytes = in_bytes = packets * width;
spi_sw_reset(regs, width == 4);
@@ -188,13 +188,13 @@ static void spi_transfer(struct exynos_spi *regs, void *in, const void *out,
}
}
-int spi_xfer(struct spi_slave *slave, const void *dout, unsigned int bytes_out,
- void *din, unsigned int bytes_in)
+int spi_xfer(const struct spi_slave *slave, const void *dout, size_t bytes_out,
+ void *din, size_t bytes_in)
{
struct exynos_spi *regs = to_exynos_spi(slave)->regs;
if (bytes_out && bytes_in) {
- u32 min_size = MIN(bytes_out, bytes_in);
+ size_t min_size = MIN(bytes_out, bytes_in);
spi_transfer(regs, din, dout, min_size);
@@ -213,7 +213,7 @@ int spi_xfer(struct spi_slave *slave, const void *dout, unsigned int bytes_out,
return 0;
}
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
{
struct exynos_spi *regs = to_exynos_spi(slave)->regs;
setbits_le32(&regs->cs_reg, SPI_SLAVE_SIG_INACT);