drivers: Reorganize the power related code layout

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2026-05-29 04:19:37 +08:00 · 2022-08-01 17:31:49 +08:00
parent 8e7752c7da
commit 8582a12388
40 changed files with 740 additions and 745 deletions
@@ -0,0 +1,113 @@
+/****************************************************************************
+ * drivers/power/pm/pm_initialize.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <nuttx/power/pm.h>
+#include <nuttx/semaphore.h>
+#include <nuttx/sched.h>
+
+#include "pm.h"
+
+#ifdef CONFIG_PM
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/* All PM global data: */
+
+/* Initialize the registry and the PM global data structures.  The PM
+ * global data structure resides in .data which is zeroed at boot time.  So
+ * it is only required to initialize non-zero elements of the PM global
+ * data structure here.
+ */
+
+struct pm_global_s g_pmglobals =
+{
+  SEM_INITIALIZER(1)
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: pm_initialize
+ *
+ * Description:
+ *   This function is called by MCU-specific one-time at power on reset in
+ *   order to initialize the power management capabilities.  This function
+ *   must be called *very* early in the initialization sequence *before* any
+ *   other device drivers are initialize (since they may attempt to register
+ *   with the power management subsystem).
+ *
+ * Input Parameters:
+ *   None.
+ *
+ * Returned Value:
+ *    None.
+ *
+ ****************************************************************************/
+
+void pm_initialize(void)
+{
+  FAR const struct pm_governor_s *gov;
+#if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX
+  int state;
+#endif
+  int i;
+
+  pm_wakelock_global_init();
+
+  /* Select governor */
+
+  for (i = 0; i < CONFIG_PM_NDOMAINS; i++)
+    {
+#if defined(CONFIG_PM_GOVERNOR_GREEDY)
+      gov = pm_greedy_governor_initialize();
+#elif defined(CONFIG_PM_GOVERNOR_ACTIVITY)
+      gov = pm_activity_governor_initialize();
+#else
+      static struct pm_governor_s null;
+      gov = &null;
+#endif
+      pm_set_governor(i, gov);
+
+      nxrmutex_init(&g_pmglobals.domain[i].lock);
+
+#if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX
+      for (state = 0; state < PM_COUNT; state++)
+        {
+#  if CONFIG_PM_GOVERNOR_EXPLICIT_RELAX < 0
+          pm_stay(i, state);
+#  else
+          pm_staytimeout(i, state, CONFIG_PM_GOVERNOR_EXPLICIT_RELAX);
+#  endif
+        }
+#endif
+    }
+}
+
+#endif /* CONFIG_PM */