[PATCH] hw/usb: Introduce Kconfig switches for the CCID card devices

[Thomas Huth]

In our downstream distribution of QEMU, we need more fine-grained
control on the set of CCID card devices that we want to include.
So let's introduce some proper Kconfig switches that it is easier
to disable them without modifying the corresponding Makefile.objs.

Signed-off-by: Thomas Huth <address@hidden>
---
 hw/usb/Kconfig       | 10 ++++++++++
 hw/usb/Makefile.objs |  7 +++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/hw/usb/Kconfig b/hw/usb/Kconfig
index 555e09377b..1358847eba 100644
--- a/hw/usb/Kconfig
+++ b/hw/usb/Kconfig
@@ -96,3 +96,13 @@ config USB_STORAGE_MTP
     bool
     default y
     depends on USB
+
+config CCID_PASSTHRU
+    bool
+    default y
+    depends on USB_SMARTCARD
+
+config CCID_EMULATED
+    bool
+    default y
+    depends on USB_SMARTCARD
diff --git a/hw/usb/Makefile.objs b/hw/usb/Makefile.objs
index 303ac084a0..ebe103fb3d 100644
--- a/hw/usb/Makefile.objs
+++ b/hw/usb/Makefile.objs
@@ -29,11 +29,14 @@ common-obj-$(CONFIG_USB_BLUETOOTH)    += dev-bluetooth.o
 
 ifeq ($(CONFIG_USB_SMARTCARD),y)
 common-obj-y                          += dev-smartcard-reader.o
-common-obj-$(CONFIG_SMARTCARD)        += smartcard.mo
-smartcard.mo-objs := ccid-card-passthru.o ccid-card-emulated.o
+ifeq ($(CONFIG_SMARTCARD),y)
+common-obj-$(call lor,$(CONFIG_CCID_PASSTHRU),$(CONFIG_CCID_EMULATED)) += 
smartcard.mo
+smartcard.mo-objs := $(call lif,$(CONFIG_CCID_PASSTHRU),ccid-card-passthru.o) \
+                     $(call lif,$(CONFIG_CCID_EMULATED),ccid-card-emulated.o)
 smartcard.mo-cflags := $(SMARTCARD_CFLAGS)
 smartcard.mo-libs := $(SMARTCARD_LIBS)
 endif
+endif
 
 ifeq ($(CONFIG_POSIX),y)
 common-obj-$(CONFIG_USB_STORAGE_MTP)  += dev-mtp.o
-- 
2.18.1