[U-Boot] [PATCH v2 1/2] drivers; add DM_NO_OF Kconfig option

[Angelo Dureghello <angelo@sysam.it>]

To be able to build spi driver with DM support, a new config
option has been introduced (DM_NO_OF) since m68k architecture
does not support fdt.

---
Changes from v1:
- split into 2 patches

Signed-off-by: Angelo Dureghello <angelo@sysam.it>
---
 arch/Kconfig             |  1 +
 drivers/core/Kconfig     |  4 ++++
 drivers/spi/spi-uclass.c | 12 +++++++-----
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index dd5a887001..c96cbfa2bd 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -28,6 +28,7 @@ config M68K
 	select HAVE_PRIVATE_LIBGCC
 	select SYS_BOOT_GET_CMDLINE
 	select SYS_BOOT_GET_KBD
+	select DM_NO_OF
 
 config MICROBLAZE
 	bool "MicroBlaze architecture"
diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig
index e8ba20ca82..47960a8a6a 100644
--- a/drivers/core/Kconfig
+++ b/drivers/core/Kconfig
@@ -244,4 +244,8 @@ config DM_DEV_READ_INLINE
 	bool
 	default y if !OF_LIVE
 
+config DM_NO_OF
+	bool
+	default n
+
 endmenu
diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c
index 15d90a54a1..908be1d4cf 100644
--- a/drivers/spi/spi-uclass.c
+++ b/drivers/spi/spi-uclass.c
@@ -107,7 +107,7 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
 	return dm_spi_xfer(slave->dev, bitlen, dout, din, flags);
 }
 
-#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+#if !CONFIG_IS_ENABLED(OF_PLATDATA) && !defined(CONFIG_DM_NO_OF)
 static int spi_child_post_bind(struct udevice *dev)
 {
 	struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);
@@ -121,7 +121,7 @@ static int spi_child_post_bind(struct udevice *dev)
 
 static int spi_post_probe(struct udevice *bus)
 {
-#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+#if !CONFIG_IS_ENABLED(OF_PLATDATA) && !defined(CONFIG_DM_NO_OF)
 	struct dm_spi_bus *spi = dev_get_uclass_priv(bus);
 
 	spi->max_hz = dev_read_u32_default(bus, "spi-max-frequency", 0);
@@ -274,7 +274,7 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode,
 	bool created = false;
 	int ret;
 
-#if CONFIG_IS_ENABLED(OF_PLATDATA)
+#if CONFIG_IS_ENABLED(OF_PLATDATA) || defined(CONFIG_DM_NO_OF)
 	ret = uclass_first_device_err(UCLASS_SPI, &bus);
 #else
 	ret = uclass_get_device_by_seq(UCLASS_SPI, busnum, &bus);
@@ -283,6 +283,7 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode,
 		printf("Invalid bus %d (err=%d)\n", busnum, ret);
 		return ret;
 	}
+
 	ret = spi_find_chip_select(bus, cs, &dev);
 
 	/*
@@ -321,6 +322,7 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode,
 	}
 
 	plat = dev_get_parent_platdata(dev);
+
 	if (!speed) {
 		speed = plat->max_hz;
 		mode = plat->mode;
@@ -427,7 +429,7 @@ UCLASS_DRIVER(spi) = {
 	.id		= UCLASS_SPI,
 	.name		= "spi",
 	.flags		= DM_UC_FLAG_SEQ_ALIAS,
-#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+#if !CONFIG_IS_ENABLED(OF_PLATDATA) && !defined(CONFIG_DM_NO_OF)
 	.post_bind	= dm_scan_fdt_dev,
 #endif
 	.post_probe	= spi_post_probe,
@@ -436,7 +438,7 @@ UCLASS_DRIVER(spi) = {
 	.per_child_auto_alloc_size = sizeof(struct spi_slave),
 	.per_child_platdata_auto_alloc_size =
 			sizeof(struct dm_spi_slave_platdata),
-#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+#if !CONFIG_IS_ENABLED(OF_PLATDATA) && !defined(CONFIG_DM_NO_OF)
 	.child_post_bind = spi_child_post_bind,
 #endif
 };
-- 
2.17.0