From 8195d7c9675e792a02312a078df6c6f2eb7cc15c Mon Sep 17 00:00:00 2001
From: INSUN PYO <insun.pyo@samsung.com>
Date: Wed, 14 Mar 2018 10:23:57 +0900
Subject: [PATCH] usb: patches to selectively support both slp and functionfs

If /sys/class/usb_mode/usb0/enable exists, it is slp usb_hal.
Otherwise it is configfs usb_hal.

Signed-off-by: INSUN PYO <insun.pyo@samsung.com>
Change-Id: I8e6b74ffbc6287fe7b5f0a7ab475edff16b2fd88
---
 CMakeLists.txt                                        |  1 +
 hw/usb_cfs_client/CMakeLists.txt                      | 19 +++++++++++++++++++
 .../usb_cfs_client.c}                                 |  7 ++++++-
 hw/usb_client/usb_client.c                            |  5 +++++
 packaging/device-manager-plugin-exynos5433.spec       |  1 +
 5 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 hw/usb_cfs_client/CMakeLists.txt
 rename hw/{usb_client/usb_client_configfs.c => usb_cfs_client/usb_cfs_client.c} (99%)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 702dd44..eec0791 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,3 +10,4 @@ ADD_SUBDIRECTORY(hw/touchscreen)
 ADD_SUBDIRECTORY(hw/ir)
 ADD_SUBDIRECTORY(hw/usb_gadget)
 ADD_SUBDIRECTORY(hw/usb_client)
+ADD_SUBDIRECTORY(hw/usb_cfs_client)
diff --git a/hw/usb_cfs_client/CMakeLists.txt b/hw/usb_cfs_client/CMakeLists.txt
new file mode 100644
index 0000000..15e7cbc
--- /dev/null
+++ b/hw/usb_cfs_client/CMakeLists.txt
@@ -0,0 +1,19 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+PROJECT(usb_cfs_client C)
+
+SET(PREFIX ${CMAKE_INSTALL_PREFIX})
+
+INCLUDE(FindPkgConfig)
+pkg_check_modules(usb_cfs_client_pkgs REQUIRED hwcommon dlog glib-2.0 libsystemd libusbgx)
+
+FOREACH(flag ${usb_cfs_client_pkgs_CFLAGS})
+	SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} ${flag}")
+ENDFOREACH(flag)
+
+SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} -fvisibility=hidden")
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
+
+ADD_LIBRARY(${PROJECT_NAME} MODULE usb_cfs_client.c ../shared.c)
+TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${usb_cfs_client_pkgs_LDFLAGS})
+SET_TARGET_PROPERTIES(${PROJECT_NAME} PROPERTIES PREFIX "")
+INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIB_INSTALL_DIR}/hw COMPONENT RuntimeLibraries)
diff --git a/hw/usb_client/usb_client_configfs.c b/hw/usb_cfs_client/usb_cfs_client.c
similarity index 99%
rename from hw/usb_client/usb_client_configfs.c
rename to hw/usb_cfs_client/usb_cfs_client.c
index deaafcd..0e76f3b 100644
--- a/hw/usb_client/usb_client_configfs.c
+++ b/hw/usb_cfs_client/usb_cfs_client.c
@@ -27,6 +27,7 @@
 #include <sys/types.h>
 #include <sys/mount.h>
 #include <usbg/usbg.h>
+#include <unistd.h>
 #include <systemd/sd-bus.h>
 
 #include <unistd.h>
@@ -965,6 +966,10 @@ static int cfs_gadget_open(struct hw_info *info,
 	if (!info || !common)
 		return -EINVAL;
 
+	/* used exclusively with slp usb_client*/
+	if (!access("/sys/class/usb_mode/usb0/enable", F_OK))
+		return -ENOENT;
+
 	cfs_client = zalloc(sizeof(*cfs_client));
 	if (!cfs_client)
 		return -ENOMEM;
@@ -1031,7 +1036,7 @@ HARDWARE_MODULE_STRUCTURE = {
 	.magic = HARDWARE_INFO_TAG,
 	.hal_version = HARDWARE_INFO_VERSION,
 	.device_version = USB_CLIENT_HARDWARE_DEVICE_VERSION,
-	.id = USB_CLIENT_HARDWARE_DEVICE_ID,
+	.id = USB_CFS_CLIENT_HARDWARE_DEVICE_ID,
 	.name = "cfs-gadget",
 	.open = cfs_gadget_open,
 	.close = cfs_gadget_close,
diff --git a/hw/usb_client/usb_client.c b/hw/usb_client/usb_client.c
index df5229a..824e562 100644
--- a/hw/usb_client/usb_client.c
+++ b/hw/usb_client/usb_client.c
@@ -23,6 +23,7 @@
 #include <limits.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 #include <systemd/sd-bus.h>
 
 #define zalloc(amount) calloc(1, amount)
@@ -715,6 +716,10 @@ static int legacy_gadget_open(struct hw_info *info,
 	if (!info || !common)
 		return -EINVAL;
 
+	/* check if slp usb gadget exists */
+	if (access("/sys/class/usb_mode/usb0/enable", F_OK))
+		return -ENOENT;
+
 	legacy = zalloc(sizeof(*legacy));
 	if (!legacy)
 		return -ENOMEM;
diff --git a/packaging/device-manager-plugin-exynos5433.spec b/packaging/device-manager-plugin-exynos5433.spec
index 6532709..814db27 100644
--- a/packaging/device-manager-plugin-exynos5433.spec
+++ b/packaging/device-manager-plugin-exynos5433.spec
@@ -14,6 +14,7 @@ BuildRequires:  pkgconfig(hwcommon)
 BuildRequires:  pkgconfig(glib-2.0)
 BuildRequires:  pkgconfig(libudev)
 BuildRequires:  pkgconfig(libsystemd)
+BuildRequires:  pkgconfig(libusbgx)
 
 %description
 Device manager plugin exynos 5433
-- 
2.7.4