usb: phy: make it a menuconfig

We already have a considerable amount of USB
PHY drivers, making it a menuconfig just
prevents us from adding too much churn to
USB's menuconfig.

While at that, also select USB_OTG_UTILS from
this new menuconfig just to keep backwards
compatibility until we manage to remove
that symbol.

Signed-off-by: Felipe Balbi <balbi@ti.com>

4 files changed, 15 insertions, 8 deletions

diff --git a/drivers/Makefile b/drivers/Makefile
index dce39a95fa71..3c200a243af0 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -79,7 +79,7 @@ obj-$(CONFIG_ATA_OVER_ETH)	+= block/aoe/
 obj-$(CONFIG_PARIDE)            += block/paride/
 obj-$(CONFIG_TC)                += tc/
 obj-$(CONFIG_UWB)               += uwb/
-obj-$(CONFIG_USB_OTG_UTILS)     += usb/
+obj-$(CONFIG_USB_PHY)           += usb/
 obj-$(CONFIG_USB)               += usb/
 obj-$(CONFIG_PCI)               += usb/
 obj-$(CONFIG_USB_GADGET)        += usb/
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 32ce740a9dd5..832cd694fb8b 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -1,8 +1,17 @@
 #
 # Physical Layer USB driver configuration
 #
-comment "USB Physical Layer drivers"
-        depends on USB || USB_GADGET
+menuconfig USB_PHY
+        tristate "USB Physical Layer drivers"
+        select USB_OTG_UTILS
+        help
+          USB controllers (those which are host, device or DRD) need a
+          device to handle the physical layer signalling, commonly called
+          a PHY.
+
+          The following drivers add support for such PHY devices.
+
+if USB_PHY
 
 config USB_OTG_UTILS
         bool
@@ -10,8 +19,6 @@ config USB_OTG_UTILS
           Select this to make sure the build includes objects from
           the OTG infrastructure directory.
 
-if USB || USB_GADGET
-
 #
 # USB Transceiver Drivers
 #
@@ -206,4 +213,4 @@ config USB_ULPI_VIEWPORT
           Provides read/write operations to the ULPI phy register set for
           controllers with a viewport register (e.g. Chipidea/ARC controllers).
 
-endif # USB || OTG
+endif # USB_PHY
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 34488ceef491..d10a8b387ffe 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -4,7 +4,7 @@
 
 ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG
 
-obj-$(CONFIG_USB_OTG_UTILS)             += phy.o
+obj-$(CONFIG_USB_PHY)                   += phy.o
 
 # transceiver drivers, keep the list sorted
 
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index 15847cbdb512..b001dc3d6354 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -161,7 +161,7 @@ usb_phy_shutdown(struct usb_phy *x)
 }
 
 /* for usb host and peripheral controller drivers */
-#ifdef CONFIG_USB_OTG_UTILS
+#if IS_ENABLED(CONFIG_USB_PHY)
 extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
 extern struct usb_phy *devm_usb_get_phy(struct device *dev,
         enum usb_phy_type type);