thermal: add thermal HAL

Thermal HAL is newly added.

Change-Id: I8fe3937422360df0edbb793c7f44c5002552e9f0
Signed-off-by: taeyoung <ty317.kim@samsung.com>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c05e559..35b74da 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,5 +9,6 @@ ADD_SUBDIRECTORY(hw/led)
 ADD_SUBDIRECTORY(hw/external_connection)
 ADD_SUBDIRECTORY(hw/touchscreen)
 ADD_SUBDIRECTORY(hw/ir)
+ADD_SUBDIRECTORY(hw/thermal)
 ADD_SUBDIRECTORY(hw/usb_gadget)
 ADD_SUBDIRECTORY(hw/usb_client)

diff --git a/hw/thermal/CMakeLists.txt b/hw/thermal/CMakeLists.txt
new file mode 100644 (file)
index 0000000..352f375
--- /dev/null
+++ b/hw/thermal/CMakeLists.txt
@@ -0,0 +1,19 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+PROJECT(thermal C)
+
+SET(PREFIX ${CMAKE_INSTALL_PREFIX})
+
+INCLUDE(FindPkgConfig)
+pkg_check_modules(thermal_pkgs REQUIRED hwcommon dlog glib-2.0)
+
+FOREACH(flag ${thermal_pkgs_CFLAGS})
+       SET(EXTRA_CFLAGS "${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 thermal.c ../shared.c ../udev.c)
+TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${thermal_pkgs_LDFLAGS})
+SET_TARGET_PROPERTIES(${PROJECT_NAME} PROPERTIES PREFIX "")
+INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIB_INSTALL_DIR}/hw COMPONENT RuntimeLibraries)

diff --git a/hw/thermal/thermal.c b/hw/thermal/thermal.c
new file mode 100644 (file)
index 0000000..bdb47c8
--- /dev/null
+++ b/hw/thermal/thermal.c
@@ -0,0 +1,163 @@
+/*
+ * device-node
+ *
+ * Copyright (c) 2016 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 <glib.h>
+
+#include <hw/thermal.h>
+#include "../shared.h"
+
+#define THERMAL_PATH "/sys/class/sec/temperature/ap_therm"
+
+static struct event_data {
+       ThermalUpdated updated_cb;
+       void *data;
+} edata = { 0, };
+
+static guint timer;
+
+static int thermal_get_state(struct thermal_info *info)
+{
+       int ret, value;
+
+       if (!info)
+               return -EINVAL;
+
+       ret = sys_get_int(THERMAL_PATH, &value);
+       if (ret < 0) {
+               _E("Failed to read %s (%d)", THERMAL_PATH, ret);
+               return ret;
+       }
+
+       if (value < 30) {
+               info->state = THERMAL_STATE_LOW;
+               info->level = THERMAL_LEVEL_NORMAL;
+               return 0;
+       }
+
+       if (value < 40) {
+               info->state = THERMAL_STATE_NORMAL;
+               info->level = THERMAL_LEVEL_NORMAL;
+               return 0;
+       }
+
+       info->state = THERMAL_STATE_HIGH;
+
+       if (value < 42)
+               info->level = THERMAL_LEVEL_WARNING;
+       else if (value < 43)
+               info->level = THERMAL_LEVEL_CRITICAL;
+       else
+               info->level = THERMAL_LEVEL_POWEROFF;
+
+       return 0;
+}
+
+static gboolean thermal_timeout(gpointer data)
+{
+       struct thermal_info info;
+       int ret;
+
+       ret = thermal_get_state(&info);
+       if (ret < 0) {
+               _E("Failed to read thermal state (%d)", ret);
+               return G_SOURCE_CONTINUE;
+       }
+
+       if (edata.updated_cb)
+               edata.updated_cb(&info, edata.data);
+
+       return G_SOURCE_CONTINUE;
+}
+
+static int thermal_register_changed_event(ThermalUpdated updated_cb, void *data)
+{
+       if (timer)
+               g_source_remove(timer);
+
+       timer = g_timeout_add(10000, thermal_timeout, NULL);
+       if (timer == 0) {
+               _E("Failed to add timer for thermal");
+               return -ENOENT;
+       }
+
+       edata.updated_cb = updated_cb;
+       edata.data = data;
+
+       return 0;
+}
+
+static int thermal_unregister_changed_event(ThermalUpdated updated_cb)
+{
+       if (timer) {
+               g_source_remove(timer);
+               timer = 0;
+       }
+
+       edata.updated_cb = NULL;
+       edata.data = NULL;
+
+       return 0;
+}
+
+static int thermal_open(struct hw_info *info,
+               const char *id, struct hw_common **common)
+{
+       struct thermal_device *thermal_dev;
+
+       if (!info || !common)
+               return -EINVAL;
+
+       thermal_dev = calloc(1, sizeof(struct thermal_device));
+       if (!thermal_dev)
+               return -ENOMEM;
+
+       thermal_dev->common.info = info;
+       thermal_dev->register_changed_event
+               = thermal_register_changed_event;
+       thermal_dev->unregister_changed_event
+               = thermal_unregister_changed_event;
+       thermal_dev->get_state
+               = thermal_get_state;
+
+       *common = (struct hw_common *)thermal_dev;
+       return 0;
+}
+
+static int thermal_close(struct hw_common *common)
+{
+       if (!common)
+               return -EINVAL;
+
+       free(common);
+       return 0;
+}
+
+HARDWARE_MODULE_STRUCTURE = {
+       .magic = HARDWARE_INFO_TAG,
+       .hal_version = HARDWARE_INFO_VERSION,
+       .device_version = THERMAL_HARDWARE_DEVICE_VERSION,
+       .id = THERMAL_HARDWARE_DEVICE_ID,
+       .name = "thermal",
+       .open = thermal_open,
+       .close = thermal_close,
+};