soc/intel: Move spi driver to use spi_bus_map

This is in preparation to get rid of the strong spi_setup_slave
implemented by different platforms.

BUG=b:38430839

Change-Id: Id3f05a2ea6eb5e31ca607861973d96b507208115
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19778
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>

src/soc/intel/baytrail/spi.c

@@ -612,10 +612,12 @@ static const struct spi_ctrlr spi_ctrlr = {
 	.max_xfer_size = member_size(ich9_spi_regs, fdata),
 };
 
-int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
+const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
 	{
-	slave->bus = bus;
-	slave->cs = cs;
-	slave->ctrlr = &spi_ctrlr;
-	return 0;
-}
+		.ctrlr = &spi_ctrlr,
+		.bus_start = 0,
+		.bus_end = 0,
+	},
+};
+
+const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);

src/soc/intel/braswell/spi.c

@@ -596,10 +596,12 @@ static const struct spi_ctrlr spi_ctrlr = {
 	.max_xfer_size = member_size(ich9_spi_regs, fdata),
 };
 
-int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
+const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
 	{
-	slave->bus = bus;
-	slave->cs = cs;
-	slave->ctrlr = &spi_ctrlr;
-	return 0;
-}
+		.ctrlr = &spi_ctrlr,
+		.bus_start = 0,
+		.bus_end = 0,
+	},
+};
+
+const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);

src/soc/intel/broadwell/spi.c

@@ -653,10 +653,12 @@ static const struct spi_ctrlr spi_ctrlr = {
 	.max_xfer_size = member_size(ich9_spi_regs, fdata),
 };
 
-int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
+const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
 	{
-	slave->bus = bus;
-	slave->cs = cs;
-	slave->ctrlr = &spi_ctrlr;
-	return 0;
-}
+		.ctrlr = &spi_ctrlr,
+		.bus_start = 0,
+		.bus_end = 0,
+	},
+};
+
+const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);

src/soc/intel/fsp_baytrail/spi.c

@@ -593,10 +593,12 @@ static const struct spi_ctrlr spi_ctrlr = {
 	.max_xfer_size = member_size(ich9_spi_regs, fdata),
 };
 
-int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
+const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
 	{
-	slave->bus = bus;
-	slave->cs = cs;
-	slave->ctrlr = &spi_ctrlr;
-	return 0;
-}
+		.ctrlr = &spi_ctrlr,
+		.bus_start = 0,
+		.bus_end = 0,
+	},
+};
+
+const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);

src/soc/intel/fsp_broadwell_de/spi.c

@@ -609,10 +609,12 @@ static const struct spi_ctrlr spi_ctrlr = {
 	.max_xfer_size = member_size(ich9_spi_regs, fdata),
 };
 
-int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave)
+const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
 	{
-	slave->bus = bus;
-	slave->cs = cs;
-	slave->ctrlr = &spi_ctrlr;
-	return 0;
-}
+		.ctrlr = &spi_ctrlr,
+		.bus_start = 0,
+		.bus_end = 0,
+	},
+};
+
+const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);