linux-kernel - [PATCHv6 2/2] PCI: layerscape: Add CONFIG_PCI_LAYERSCAPE

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Date:   Wed, 14 Aug 2019 10:03:30 +0800
From:   Xiaowei Bao <xiaowei.bao@....com>
To:     minghuan.Lian@....com, mingkai.hu@....com, roy.zang@....com,
        lorenzo.pieralisi@....com, bhelgaas@...gle.com,
        linuxppc-dev@...ts.ozlabs.org, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Xiaowei Bao <xiaowei.bao@....com>
Subject: [PATCHv6 2/2] PCI: layerscape: Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately

Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately.

Signed-off-by: Xiaowei Bao <xiaowei.bao@....com>
---
v2:
 - No change.
v3:
 - modify the commit message.
v4:
 - send the patch again with '--to'.
v5:
 - No change.
v6:
 - remove the [EXT] tag of the $SUBJECT in email.

 drivers/pci/controller/dwc/Kconfig  | 20 ++++++++++++++++++--
 drivers/pci/controller/dwc/Makefile |  3 ++-
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index 6ea778a..869c645 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -131,13 +131,29 @@ config PCI_KEYSTONE_EP
 	  DesignWare core functions to implement the driver.
 
 config PCI_LAYERSCAPE
-	bool "Freescale Layerscape PCIe controller"
+	bool "Freescale Layerscape PCIe controller - Host mode"
 	depends on OF && (ARM || ARCH_LAYERSCAPE || COMPILE_TEST)
 	depends on PCI_MSI_IRQ_DOMAIN
 	select MFD_SYSCON
 	select PCIE_DW_HOST
 	help
-	  Say Y here if you want PCIe controller support on Layerscape SoCs.
+	  Say Y here if you want to enable PCIe controller support on Layerscape
+	  SoCs to work in Host mode.
+	  This controller can work either as EP or RC. The RCW[HOST_AGT_PEX]
+	  determines which PCIe controller works in EP mode and which PCIe
+	  controller works in RC mode.
+
+config PCI_LAYERSCAPE_EP
+	bool "Freescale Layerscape PCIe controller - Endpoint mode"
+	depends on OF && (ARM || ARCH_LAYERSCAPE || COMPILE_TEST)
+	depends on PCI_ENDPOINT
+	select PCIE_DW_EP
+	help
+	  Say Y here if you want to enable PCIe controller support on Layerscape
+	  SoCs to work in Endpoint mode.
+	  This controller can work either as EP or RC. The RCW[HOST_AGT_PEX]
+	  determines which PCIe controller works in EP mode and which PCIe
+	  controller works in RC mode.
 
 config PCI_HISI
 	depends on OF && (ARM64 || COMPILE_TEST)
diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
index b085dfd..824fde7 100644
--- a/drivers/pci/controller/dwc/Makefile
+++ b/drivers/pci/controller/dwc/Makefile
@@ -8,7 +8,8 @@ obj-$(CONFIG_PCI_EXYNOS) += pci-exynos.o
 obj-$(CONFIG_PCI_IMX6) += pci-imx6.o
 obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o
 obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone.o
-obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o pci-layerscape-ep.o
+obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
+obj-$(CONFIG_PCI_LAYERSCAPE_EP) += pci-layerscape-ep.o
 obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o
 obj-$(CONFIG_PCIE_ARMADA_8K) += pcie-armada8k.o
 obj-$(CONFIG_PCIE_ARTPEC6) += pcie-artpec6.o
-- 
2.9.5