First commit XiUOS

resources/timer/drv_hwtimer.c

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+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+* @file drv_hwtimer.c
+* @brief register hwtimer drv function using bus driver framework
+* @version 1.0 
+* @author AIIT XUOS Lab
+* @date 2021-04-24
+*/
+
+#include <bus_hwtimer.h>
+#include <dev_hwtimer.h>
+
+static DoubleLinklistType hwtimerdrv_linklist;
+
+/*Create the driver linklist*/
+static void HwtimerDrvLinkInit()
+{
+    InitDoubleLinkList(&hwtimerdrv_linklist);
+}
+
+DriverType HwtimerDriverFind(const char *drv_name)
+{
+    NULL_PARAM_CHECK(drv_name);
+    
+    struct Driver *driver = NONE;
+
+    DoubleLinklistType *node = NONE;
+    DoubleLinklistType *head = &hwtimerdrv_linklist;
+
+    for (node = head->node_next; node != head; node = node->node_next) {
+        driver = SYS_DOUBLE_LINKLIST_ENTRY(node, struct Driver, driver_link);
+        if (!strcmp(driver->drv_name, drv_name)) {
+            return driver;
+        }
+    }
+
+    KPrintf("HwtimerDriverFind cannot find the %s driver.return NULL\n", drv_name);
+    return NONE;
+}
+
+int HwtimerDriverRegister(struct Driver *driver)
+{
+    NULL_PARAM_CHECK(driver);
+
+    x_err_t ret = EOK;
+    static x_bool driver_link_flag = RET_FALSE;
+
+    if (!driver_link_flag) {
+        HwtimerDrvLinkInit();
+        driver_link_flag = RET_TRUE;
+    }
+
+    DoubleLinkListInsertNodeAfter(&hwtimerdrv_linklist, &(driver->driver_link));
+
+    return ret;
+}