soc: cc13x2_cc26x2: add support for deep sleep mode #1

Implement deep sleep mode #1 using the shutdown state on the
CC13x2/CC26x2.

Signed-off-by: Vincent Wan <[email protected]>

Author: vanti

soc/arm/ti_simplelink/cc13x2_cc26x2/Kconfig.series

@@ -14,6 +14,7 @@ config SOC_SERIES_CC13X2_CC26X2
 	select HAS_TI_CCFG
 	select HAS_SYS_POWER_STATE_SLEEP_1
 	select HAS_SYS_POWER_STATE_SLEEP_2
+	select HAS_SYS_POWER_STATE_DEEP_SLEEP_1
 	select SYS_PM_STATE_LOCK if SYS_POWER_MANAGEMENT
 	help
 	  Enable support for TI SimpleLink CC13x2 / CC26x2 SoCs

soc/arm/ti_simplelink/cc13x2_cc26x2/power.c

@@ -38,6 +38,7 @@ extern PowerCC26X2_ModuleState PowerCC26X2_module;
  * Power state mapping:
  * SYS_POWER_STATE_SLEEP_1: Idle
  * SYS_POWER_STATE_SLEEP_2: Standby
+ * SYS_POWER_STATE_DEEP_SLEEP_1: Shutdown
  */
 
 /* Invoke Low Power/System Off specific Tasks */
@@ -97,6 +98,12 @@ void sys_set_power_state(enum power_states state)
 			&PowerCC26X2_module.clockObj));
 		break;
 #endif
+
+#ifdef CONFIG_SYS_POWER_DEEP_SLEEP_STATES
+	case SYS_POWER_STATE_DEEP_SLEEP_1:
+		Power_shutdown(0, 0);
+		break;
+#endif
 	default:
 		LOG_DBG("Unsupported power state %u", state);
 		break;