[PATCH 2/2] [usb] add support for APM X-Gene to xhci-platform

[mlangsdo@redhat.com (Mark Langsdorf)]

Applied Micro's X-Gene platform uses the xhci-platform for USB.
Add the glue to decode it from ACPI and change the Kconfig files
so the xhci-plat.o file gets built.

Signed-off-by: Mark Langsdorf <mlangsdo@redhat.com>
---
 arch/arm64/Kconfig           |  1 +
 drivers/usb/host/Kconfig     |  8 ++++++++
 drivers/usb/host/xhci-plat.c | 11 +++++++++++
 3 files changed, 20 insertions(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 042f785..07549ec 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -149,6 +149,7 @@ config ARCH_XGENE
 	bool "AppliedMicro X-Gene SOC Family"
 	select MFD_SYSCON
 	select POWER_RESET_SYSCON
+	select USB_XHCI_XGENE
 	help
 	  This enables support for AppliedMicro X-Gene SOC Family
 
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 82800a7..9fd52db 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -45,6 +45,14 @@ config USB_XHCI_RCAR
 	  Say 'Y' to enable the support for the xHCI host controller
 	  found in Renesas R-Car ARM SoCs.
 
+config USB_XHCI_XGENE
+	tristate "xHCI support for Applied Micro X-Gene SoCs"
+	select USB_XHCI_PLATFORM
+	depends on ARCH_XGENE || COMPILE_TEST
+	---help---
+	  Say 'Y' to enable the support for the xHCI host controller
+	   found in Applied Micro X-Gene ARM SoCs.
+
 endif # USB_XHCI_HCD
 
 config USB_EHCI_HCD
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 3045e77..5012c68 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -18,6 +18,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/usb/xhci_pdriver.h>
+#include <linux/acpi.h>
 
 #include "xhci.h"
 #include "xhci-mvebu.h"
@@ -290,6 +291,15 @@ static const struct of_device_id usb_xhci_of_match[] = {
 MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
 #endif
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id usb_xhci_acpi_match[] = {
+	/* APM X-Gene USB Controller */
+	{ "PNP0D10", },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
+#endif
+
 static struct platform_driver usb_xhci_driver = {
 	.probe	= xhci_plat_probe,
 	.remove	= xhci_plat_remove,
@@ -297,6 +307,7 @@ static struct platform_driver usb_xhci_driver = {
 		.name = "xhci-hcd",
 		.pm = DEV_PM_OPS,
 		.of_match_table = of_match_ptr(usb_xhci_of_match),
+		.acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
 	},
 };
 MODULE_ALIAS("platform:xhci-hcd");
-- 
1.9.3