Import of the watch repository from Pebble

2025-05-22 03:14:52 +00:00 · 2024-12-12 16:43:03 -08:00 · 2024-12-12 16:43:03 -08:00 · 3b92768480
commit 3b92768480
10334 changed files with 2564465 additions and 0 deletions
--- a/src/fw/kernel/low_power.c
+++ b/src/fw/kernel/low_power.c
@ -0,0 +1,108 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * 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 "kernel/low_power.h"
+
+#include "apps/prf_apps/prf_low_power_app.h"
+#include "drivers/rtc.h"
+#include "kernel/event_loop.h"
+#include "kernel/ui/modals/modal_manager.h"
+#include "kernel/util/standby.h"
+#include "mfg/mfg_mode/mfg_factory_mode.h"
+#include "process_management/app_manager.h"
+#include "process_management/worker_manager.h"
+#include "services/common/analytics/analytics.h"
+#include "services/common/system_task.h"
+#include "services/runlevel.h"
+
+#include <stdbool.h>
+
+static bool s_low_power_active, s_prev_low_power_active;
+static TimerID s_toggle_timer = TIMER_INVALID_ID;
+
+static void prv_low_power_launcher_task_callback(void *unused) {
+  if (s_low_power_active == s_prev_low_power_active) {
+    // We settled into the same state as before toggling.
+    return;
+  }
+
+  if (s_low_power_active) {
+    analytics_stopwatch_start(ANALYTICS_DEVICE_METRIC_WATCH_ONLY_TIME,
+                              AnalyticsClient_System);
+    worker_manager_disable();
+    services_set_runlevel(RunLevel_LowPower);
+  } else {
+    analytics_stopwatch_stop(ANALYTICS_DEVICE_METRIC_WATCH_ONLY_TIME);
+    worker_manager_enable();
+    services_set_runlevel(RunLevel_Normal);
+  }
+
+  s_prev_low_power_active = s_low_power_active;
+}
+
+static void prv_low_power_toggle_timer_callback(void* data) {
+  launcher_task_add_callback(prv_low_power_launcher_task_callback, data);
+}
+
+static void prv_low_power_transition(bool active) {
+  s_low_power_active = active;
+  if (s_toggle_timer == TIMER_INVALID_ID) {
+    s_toggle_timer = new_timer_create();
+  }
+  // Rapid charger connection changes (aligning magnetic connector for example)
+  // will cause repeated low power on/off requests. Require that a few seconds
+  // elapse without further transitions before acting upon it to give us some
+  // time to settle on one state or the other.
+  new_timer_start(s_toggle_timer, 3000, prv_low_power_toggle_timer_callback,
+                  NULL, 0 /*flags*/);
+
+  // FIXME PBL-XXXXX: This should be in a shell/prf/battery_ui_fsm.c
+#if RECOVERY_FW
+  if (active) {
+    app_manager_launch_new_app(&(AppLaunchConfig) {
+      .md = prf_low_power_app_get_info(),
+    });
+  } else {
+    // In MFG mode, disable low power mode above but don't close the app.
+    if (mfg_is_mfg_mode()) {
+      return;
+    }
+    app_manager_close_current_app(true);
+  }
+#endif
+}
+
+void low_power_standby(void) {
+  analytics_stopwatch_stop(ANALYTICS_DEVICE_METRIC_WATCH_ONLY_TIME);
+  enter_standby(RebootReasonCode_LowBattery);
+}
+
+void low_power_enter(void) {
+#if RECOVERY_FW
+  if (mfg_is_mfg_mode()) {
+    return;
+  }
+#endif
+  prv_low_power_transition(true);
+}
+
+void low_power_exit(void) {
+  prv_low_power_transition(false);
+}
+
+bool low_power_is_active(void) {
+  return s_low_power_active;
+}