PCI: Regroup all PCI related entries into drivers/pci/Makefile

Clean up drivers/Makefile by moving the pci/endpoint and pci/dwc entries
from drivers/Makefile into drivers/pci/Makefile.

Since we don't want to introduce any dependency between CONFIG_PCI and
CONFIG_PCI_ENDPOINT, we now always execute drivers/pci/Makefile.

Hence all Makefiles in drivers/pci/ were updated accordingly so no file is
compiled when CONFIG_PCI is not defined.

Also, we add a comment to reinforce that EPC and EPF libraries must be
initialized before their users. Hence built-in EPC drivers, such as
those of Designware, are linked after the endpoint core libraries.

Finally, we add another comment to explain why obj-y has been chosen
instead of obj-$(CONFIG_PCIE_DW) to parse the dwc/ sub-folder.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@free-electrons.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index c7819b973df7..ddb5aa6640d7 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -3,12 +3,15 @@
 # Makefile for the PCI bus specific drivers.
 #
 
-obj-y		+= access.o bus.o probe.o host-bridge.o remove.o pci.o \
+obj-$(CONFIG_PCI)	+= access.o bus.o probe.o host-bridge.o remove.o pci.o \
 			pci-driver.o search.o pci-sysfs.o rom.o setup-res.o \
 			irq.o vpd.o setup-bus.o vc.o mmap.o setup-irq.o
 
+ifdef CONFIG_PCI
 obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_SYSFS) += slot.o
+obj-$(CONFIG_OF) += of.o
+endif
 
 obj-$(CONFIG_PCI_QUIRKS) += quirks.o
 
@@ -44,10 +47,14 @@ obj-$(CONFIG_PCI_ECAM) += ecam.o
 
 obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen-pcifront.o
 
-obj-$(CONFIG_OF) += of.o
-
 ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
 
 # PCI host controller drivers
 obj-y += host/
 obj-y += switch/
+
+obj-$(CONFIG_PCI_ENDPOINT)	+= endpoint/
+
+# Endpoint library must be initialized before its users
+# pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
+obj-y				+= dwc/