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authorRussell King <rmk+kernel@arm.linux.org.uk>2014-01-10 23:23:37 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-01-10 16:27:36 -0800
commit2a41e6070dd7ef539d0f3b1652b4839d04378e11 (patch)
tree9cb329a1231a1f971e6c18ff472090872adb8da2 /drivers/base/Makefile
parentd1ba277e79889085a2faec3b68b91ce89c63f888 (diff)
downloadlinux-next-2a41e6070dd7ef539d0f3b1652b4839d04378e11.tar.gz
drivers/base: provide an infrastructure for componentised subsystems
Subsystems such as ALSA, DRM and others require a single card-level device structure to represent a subsystem. However, firmware tends to describe the individual devices and the connections between them. Therefore, we need a way to gather up the individual component devices together, and indicate when we have all the component devices. We do this in DT by providing a "superdevice" node which specifies the components, eg: imx-drm { compatible = "fsl,drm"; crtcs = <&ipu1>; connectors = <&hdmi>; }; The superdevice is declared into the component support, along with the subcomponents. The superdevice receives callbacks to locate the subcomponents, and identify when all components are present. At this point, we bind the superdevice, which causes the appropriate subsystem to be initialised in the conventional way. When any of the components or superdevice are removed from the system, we unbind the superdevice, thereby taking the subsystem down. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/Makefile')
-rw-r--r--drivers/base/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 94e8a80e87f8..870ecfd503af 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -1,6 +1,6 @@
# Makefile for the Linux device tree
-obj-y := core.o bus.o dd.o syscore.o \
+obj-y := component.o core.o bus.o dd.o syscore.o \
driver.o class.o platform.o \
cpu.o firmware.o init.o map.o devres.o \
attribute_container.o transport_class.o \