[PATCH 1/2] DM_USB: allow building without OF_CONTROL

[Pali Rohár]

From: Ivaylo Dimitrov <ivo.g.dimitrov.75 at gmail.com>

Currently DM_USB requires OF_CONTROL to be enabled, otherwise link errors
occur. On the other hand OF_CONTROL requires board code to be migrated to
DT, which is not always possible or required.

Fix that by conditionally compiling OF_CONTROL specific sections in USB
related drivers code in the same way like it is done in the other drivers.
Also, auto select OF_LIBFDT if DM_USB is selected but OF_CONTROL is not.
Introduce a new Kconfig option OF_NODE used to compile of_node.c in case
OF_CONTROL is not enabled. Fix deprecation warning condition as well.

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75 at gmail.com>
Tested-by: Pali Rohár <pali at kernel.org>
---
 Makefile                      | 3 +--
 common/usb_hub.c              | 2 ++
 drivers/core/Makefile         | 7 ++++++-
 drivers/usb/Kconfig           | 6 ++++++
 drivers/usb/host/usb-uclass.c | 5 ++++-
 5 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index a73481d18c14..e1cf0200b72c 100644
--- a/Makefile
+++ b/Makefile
@@ -1114,8 +1114,7 @@ ifneq ($(CONFIG_DM),y)
 	@echo >&2 "See doc/driver-model/migration.rst for more info."
 	@echo >&2 "===================================================="
 endif
-	$(call deprecated,CONFIG_DM_USB CONFIG_OF_CONTROL CONFIG_BLK,\
-		USB,v2019.07,$(CONFIG_USB))
+	$(call deprecated,CONFIG_DM_USB CONFIG_BLK,USB,v2019.07,$(CONFIG_USB))
 	$(call deprecated,CONFIG_DM_PCI,PCI,v2019.07,$(CONFIG_PCI))
 	$(call deprecated,CONFIG_DM_VIDEO,video,v2019.07,\
 		$(CONFIG_LCD)$(CONFIG_VIDEO))
diff --git a/common/usb_hub.c b/common/usb_hub.c
index ba11a188ca64..c6b042a68440 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -956,7 +956,9 @@ U_BOOT_DRIVER(usb_generic_hub) = {
 UCLASS_DRIVER(usb_hub) = {
 	.id		= UCLASS_USB_HUB,
 	.name		= "usb_hub",
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.post_bind	= dm_scan_fdt_dev,
+#endif
 	.post_probe	= usb_hub_post_probe,
 	.child_pre_probe	= usb_child_pre_probe,
 	.per_child_auto	= sizeof(struct usb_device),
diff --git a/drivers/core/Makefile b/drivers/core/Makefile
index 5edd4e413576..2cf5873a3278 100644
--- a/drivers/core/Makefile
+++ b/drivers/core/Makefile
@@ -15,6 +15,11 @@ obj-$(CONFIG_$(SPL_)OF_LIVE) += of_access.o of_addr.o
 ifndef CONFIG_DM_DEV_READ_INLINE
 obj-$(CONFIG_OF_CONTROL) += read.o
 endif
-obj-$(CONFIG_OF_CONTROL) += of_extra.o ofnode.o read_extra.o
+obj-$(CONFIG_OF_CONTROL) += of_extra.o read_extra.o
+ifdef CONFIG_OF_NODE
+obj-y += ofnode.o
+else
+obj-$(CONFIG_OF_CONTROL) += ofnode.o
+endif
 
 ccflags-$(CONFIG_DM_DEBUG) += -DDEBUG
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index f6975730bf8d..cb0593a724f0 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -33,9 +33,15 @@ menuconfig USB
 
 if USB
 
+config OF_NODE
+	bool
+	default n
+
 config DM_USB
 	bool "Enable driver model for USB"
 	depends on USB && DM
+	select OF_LIBFDT if !OF_CONTROL
+	select OF_NODE if !OF_CONTROL
 	help
 	  Enable driver model for USB. The USB interface is then implemented
 	  by the USB uclass. Multiple USB controllers of different types
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
index e3b616c3266a..71dc578550f5 100644
--- a/drivers/usb/host/usb-uclass.c
+++ b/drivers/usb/host/usb-uclass.c
@@ -770,6 +770,7 @@ int usb_detect_change(void)
 
 static int usb_child_post_bind(struct udevice *dev)
 {
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	struct usb_dev_plat *plat = dev_get_parent_plat(dev);
 	int val;
 
@@ -787,7 +788,7 @@ static int usb_child_post_bind(struct udevice *dev)
 		plat->id.match_flags |= USB_DEVICE_ID_MATCH_INT_CLASS;
 		plat->id.bInterfaceClass = val;
 	}
-
+#endif
 	return 0;
 }
 
@@ -848,7 +849,9 @@ UCLASS_DRIVER(usb) = {
 	.id		= UCLASS_USB,
 	.name		= "usb",
 	.flags		= DM_UC_FLAG_SEQ_ALIAS,
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.post_bind	= dm_scan_fdt_dev,
+#endif
 	.priv_auto	= sizeof(struct usb_uclass_priv),
 	.per_child_auto	= sizeof(struct usb_device),
 	.per_device_auto	= sizeof(struct usb_bus_priv),
-- 
2.20.1