Add bezel for wearable target

Change-Id: Id9e95809b20c0593bc46a0d6139a2802f75a3ad6
Signed-off-by: lokilee73 <changjoo.lee@samsung.com>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 47b02ce..89092ae 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,4 +9,5 @@ ADD_SUBDIRECTORY(hw/external_connection)
 ADD_SUBDIRECTORY(hw/touchscreen)
 ADD_SUBDIRECTORY(hw/usb_gadget)
 ADD_SUBDIRECTORY(hw/usb_client)
-ADD_SUBDIRECTORY(hw/thermal)
\ No newline at end of file
+ADD_SUBDIRECTORY(hw/thermal)
+ADD_SUBDIRECTORY(hw/bezel)
\ No newline at end of file

diff --git a/hw/bezel/CMakeLists.txt b/hw/bezel/CMakeLists.txt
new file mode 100644 (file)
index 0000000..36a47e7
--- /dev/null
+++ b/hw/bezel/CMakeLists.txt
@@ -0,0 +1,19 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+PROJECT(bezel C)
+
+SET(PREFIX ${CMAKE_INSTALL_PREFIX})
+
+INCLUDE(FindPkgConfig)
+pkg_check_modules(bezel_pkgs REQUIRED hwcommon dlog)
+
+FOREACH(flag ${bezel_pkgs_CFLAGS})
+       SET(EXTRA_CFLAGS "${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 bezel.c)
+TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${bezel_pkgs_LDFLAGS})
+SET_TARGET_PROPERTIES(${PROJECT_NAME} PROPERTIES PREFIX "")
+INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIB_INSTALL_DIR}/hw COMPONENT RuntimeLibraries)

diff --git a/hw/bezel/bezel.c b/hw/bezel/bezel.c
new file mode 100644 (file)
index 0000000..289d443
--- /dev/null
+++ b/hw/bezel/bezel.c
@@ -0,0 +1,181 @@
+/*
+ * device-node
+ *
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <linux/limits.h>
+#include <dirent.h>
+
+#include <hw/bezel.h>
+#include <hw/shared.h>
+
+#define INPUT_PATH      "/sys/class/input/"
+#define KEY_CAPABILITIES_PATH  "/device/capabilities/key"
+#define ENABLED_PATH           "/device/enabled"
+#define bezel_CAPABILITY 10000
+
+static char *bezel_node;
+
+static int bezel_probe(void)
+{
+       DIR *d;
+       struct dirent *dir;
+       char buf[PATH_MAX];
+       int val, ret = -ENOTSUP;
+
+       d = opendir(INPUT_PATH);
+       if (!d)
+               return -errno;
+
+       while ((dir = readdir(d))) {
+               if (dir->d_name[0] == '.')
+                       continue;
+               snprintf(buf, sizeof(buf), "%s%s%s", INPUT_PATH,
+                               dir->d_name, KEY_CAPABILITIES_PATH);
+
+               ret = sys_get_int(buf, &val);
+               if (ret < 0 || val != bezel_CAPABILITY)
+                       continue;
+
+               snprintf(buf, sizeof(buf), "%s%s%s", INPUT_PATH,
+                               dir->d_name, ENABLED_PATH);
+
+               if (bezel_node)
+                       free(bezel_node);
+
+               bezel_node = strndup(buf, strlen(buf));
+               if (bezel_node) {
+                       _I("bezel node (%s)", bezel_node);
+                       ret = 0;
+               } else {
+                       _E("strndup() failed");
+                       ret = -ENOMEM;
+               }
+               break;
+       }
+       closedir(d);
+
+       return ret;
+}
+
+static int bezel_get_state(enum bezel_state *state)
+{
+       int ret, val;
+
+       if (!bezel_node || !(*bezel_node))
+               return -ENOENT;
+
+       if (!state)
+               return -EINVAL;
+
+       ret = sys_get_int(bezel_node, &val);
+       if (ret < 0) {
+               _E("Failed to get bezel state (%d)", ret);
+               return ret;
+       }
+
+       switch (val) {
+       case BEZEL_TURNOFF:
+               *state = BEZEL_TURNOFF;
+               break;
+       case BEZEL_TURNON:
+               *state = BEZEL_TURNON;
+               break;
+       default:
+               _E("Failed to get bezel state (%d)", val);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int bezel_set_state(enum bezel_state state)
+{
+       int ret, val;
+
+       if (!bezel_node || !(*bezel_node))
+               return -ENOENT;
+
+       switch (state) {
+       case BEZEL_TURNOFF:
+               val = BEZEL_TURNOFF;
+               break;
+       case BEZEL_TURNON:
+               val = BEZEL_TURNON;
+               break;
+       default:
+               _E("Invalid input (%d)", state);
+               return -EINVAL;
+       }
+
+       ret = sys_set_int(bezel_node, val);
+       if (ret < 0)
+               _E("Failed to change bezel state (%d)", ret);
+
+       return ret;
+}
+
+static int bezel_open(struct hw_info *info,
+               const char *id, struct hw_common **common)
+{
+       struct bezel_device *bezel_dev;
+
+       if (!info || !common)
+               return -EINVAL;
+
+       if (bezel_probe() < 0)
+               return -ENOTSUP;
+
+       bezel_dev = calloc(1, sizeof(struct bezel_device));
+       if (!bezel_dev)
+               return -ENOMEM;
+
+       bezel_dev->common.info = info;
+       bezel_dev->get_state = bezel_get_state;
+       bezel_dev->set_state = bezel_set_state;
+
+       *common = (struct hw_common *)bezel_dev;
+       return 0;
+}
+
+static int bezel_close(struct hw_common *common)
+{
+       if (!common)
+               return -EINVAL;
+
+       free(common);
+       if (bezel_node) {
+               free(bezel_node);
+               bezel_node = NULL;
+       }
+
+       return 0;
+}
+
+HARDWARE_MODULE_STRUCTURE = {
+       .magic = HARDWARE_INFO_TAG,
+       .hal_version = HARDWARE_INFO_VERSION,
+       .device_version = BEZEL_HARDWARE_DEVICE_VERSION,
+       .id = BEZEL_HARDWARE_DEVICE_ID,
+       .name = "bezel",
+       .open = bezel_open,
+       .close = bezel_close,
+};