add esp32s2beta in soc component

components/soc/esp32s2beta/rtc_pm.c

@@ -0,0 +1,67 @@
+// Copyright 2015-2017 Espressif Systems (Shanghai) PTE 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 <stdint.h>
+#include <assert.h>
+#include "soc/rtc.h"
+#include "soc/rtc_cntl_reg.h"
+#include "soc/apb_ctrl_reg.h"
+
+typedef enum {
+    PM_LIGHT_SLEEP = BIT(2),        /*!< WiFi PD, memory in light sleep */
+} pm_sleep_mode_t;
+
+typedef enum{
+    PM_SW_NOREJECT = 0,
+    PM_SW_REJECT   = 1
+} pm_sw_reject_t;
+
+
+/* These MAC-related functions are defined in the closed source part of
+ * RTC library
+ */
+extern void pm_mac_init();
+extern int pm_check_mac_idle();
+extern void pm_mac_deinit();
+
+/* This sleep-related function is called from the closed source part of RTC
+ * library.
+ */
+pm_sw_reject_t pm_set_sleep_mode(pm_sleep_mode_t sleep_mode, void(*pmac_save_params)())
+{
+    (void) pmac_save_params; /* unused */
+
+    pm_mac_deinit();
+    if (pm_check_mac_idle()) {
+        pm_mac_init();
+        return PM_SW_REJECT;
+    }
+
+    rtc_sleep_config_t cfg = { 0 };
+
+    switch (sleep_mode) {
+        case PM_LIGHT_SLEEP:
+            cfg.wifi_pd_en = 1;
+            cfg.dig_dbias_wak = 4;
+            cfg.dig_dbias_slp = 0;
+            cfg.rtc_dbias_wak = 0;
+            cfg.rtc_dbias_slp = 0;
+            rtc_sleep_init(cfg);
+            break;
+
+        default:
+            assert(0 && "unsupported sleep mode");
+    }
+    return PM_SW_NOREJECT;
+}