spi: Pass pointer to spi_slave structure in spi_setup_slave

For spi_setup_slave, instead of making the platform driver return a
pointer to spi_slave structure, pass in a structure pointer that can be
filled in by the driver as required. This removes the need for platform
drivers to maintain a slave structure in data/CAR section.

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

Change-Id: Ia15a4f88ef4dcfdf616bb1c22261e7cb642a7573
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17683
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

5 files changed, 16 insertions, 52 deletions

diff --git a/src/southbridge/amd/agesa/hudson/spi.c b/src/southbridge/amd/agesa/hudson/spi.c
index 7bb0e3f124..a8b3b2a409 100644
--- a/src/southbridge/amd/agesa/hudson/spi.c
+++ b/src/southbridge/amd/agesa/hudson/spi.c
@@ -176,15 +176,9 @@ int chipset_volatile_group_end(const struct spi_flash *flash)
 	return 0;
 }
 
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
+int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
 {
-	struct spi_slave *slave = malloc(sizeof(*slave));
-
-	if (!slave) {
-		return NULL;
-	}
-
-	memset(slave, 0, sizeof(*slave));
-
-	return slave;
+	slave->bus = bus;
+	slave->cs = cs;
+	return 0;
 }
diff --git a/src/southbridge/amd/cimx/sb800/spi.c b/src/southbridge/amd/cimx/sb800/spi.c
index 2522c2e5b5..d33106011c 100644
--- a/src/southbridge/amd/cimx/sb800/spi.c
+++ b/src/southbridge/amd/cimx/sb800/spi.c
@@ -168,15 +168,9 @@ int chipset_volatile_group_end(const struct spi_flash *flash)
 	return 0;
 }
 
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
+int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
 {
-	struct spi_slave *slave = malloc(sizeof(*slave));
-
-	if (!slave) {
-		return NULL;
-	}
-
-	memset(slave, 0, sizeof(*slave));
-
-	return slave;
+	slave->bus = bus;
+	slave->cs = cs;
+	return 0;
 }
diff --git a/src/southbridge/amd/sb700/spi.c b/src/southbridge/amd/sb700/spi.c
index 2b1ae2dcc8..fca401cbbf 100644
--- a/src/southbridge/amd/sb700/spi.c
+++ b/src/southbridge/amd/sb700/spi.c
@@ -76,17 +76,11 @@ void spi_release_bus(const struct spi_slave *slave)
 	/* Handled internally by the SB700 */
 }
 
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
+int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
 {
-	struct spi_slave *slave = malloc(sizeof(*slave));
-
-	if (!slave) {
-		return NULL;
-	}
-
-	memset(slave, 0, sizeof(*slave));
-
-	return slave;
+	slave->bus = bus;
+	slave->cs = cs;
+	return 0;
 }
 
 int spi_xfer(const struct spi_slave *slave, const void *dout,
diff --git a/src/southbridge/intel/common/spi.c b/src/southbridge/intel/common/spi.c
index 2d36d38354..7e0cc201c7 100644
--- a/src/southbridge/intel/common/spi.c
+++ b/src/southbridge/intel/common/spi.c
@@ -285,20 +285,11 @@ static void ich_set_bbar(uint32_t minaddr)
 	writel_(ichspi_bbar, cntlr.bbar);
 }
 
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
+int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
 {
-	ich_spi_slave *slave = malloc(sizeof(*slave));
-
-	if (!slave) {
-		printk(BIOS_DEBUG, "ICH SPI: Bad allocation\n");
-		return NULL;
-	}
-
-	memset(slave, 0, sizeof(*slave));
-
 	slave->bus = bus;
 	slave->cs = cs;
-	return slave;
+	return 0;
 }
 
 void spi_init(void)
diff --git a/src/southbridge/intel/fsp_rangeley/spi.c b/src/southbridge/intel/fsp_rangeley/spi.c
index 8a0fac2f92..de676a9dfa 100644
--- a/src/southbridge/intel/fsp_rangeley/spi.c
+++ b/src/southbridge/intel/fsp_rangeley/spi.c
@@ -322,20 +322,11 @@ static void ich_set_bbar(uint32_t minaddr)
 	writel_(ichspi_bbar, cntlr.bbar);
 }
 
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
+int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
 {
-	ich_spi_slave *slave = malloc(sizeof(*slave));
-
-	if (!slave) {
-		printk(BIOS_DEBUG, "ICH SPI: Bad allocation\n");
-		return NULL;
-	}
-
-	memset(slave, 0, sizeof(*slave));
-
 	slave->bus = bus;
 	slave->cs = cs;
-	return slave;
+	return 0;
 }
 
 /*