diff mbox series

[BlueZ,v4,2/6] adapter: Implement PowerState property

Message ID 20220831091912.47894-2-hadess@hadess.net (mailing list archive)
State Superseded
Headers show
Series [BlueZ,v4,1/6] adapter: Keep track of whether the adapter is rfkill'ed | expand

Checks

Context Check Description
tedd_an/pre-ci_am success Success
tedd_an/checkpatch fail [BlueZ,v4,2/6] adapter: Implement PowerState property ERROR:CODE_INDENT: code indent should use tabs where possible #96: FILE: src/adapter.c:590: +^I g_dbus_emit_property_changed(dbus_conn, adapter->path,$ WARNING:LONG_LINE: line length of 97 exceeds 80 columns #123: FILE: src/adapter.c:659: + reset_power_state_target(adapter, settings & MGMT_SETTING_POWERED ? 0x01 : 0x00); WARNING:LONG_LINE_STRING: line length of 81 exceeds 80 columns #153: FILE: src/adapter.c:727: + ADAPTER_INTERFACE, "PowerState"); WARNING:LONG_LINE_STRING: line length of 81 exceeds 80 columns #175: FILE: src/adapter.c:761: + ADAPTER_INTERFACE, "PowerState"); WARNING:LONG_LINE_STRING: line length of 81 exceeds 80 columns #209: FILE: src/adapter.c:3101: + ADAPTER_INTERFACE, "PowerState"); WARNING:LONG_LINE_STRING: line length of 81 exceeds 80 columns #222: FILE: src/adapter.c:3115: + ADAPTER_INTERFACE, "PowerState"); WARNING:LONG_LINE: line length of 84 exceeds 80 columns #239: FILE: src/adapter.c:3156: + } else if (adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_NONE) { WARNING:LONG_LINE: line length of 81 exceeds 80 columns #245: FILE: src/adapter.c:3162: + if (adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_ON) WARNING:LONG_LINE_STRING: line length of 81 exceeds 80 columns #273: FILE: src/adapter.c:5620: + ADAPTER_INTERFACE, "PowerState"); WARNING:LONG_LINE_STRING: line length of 81 exceeds 80 columns #282: FILE: src/adapter.c:7365: + ADAPTER_INTERFACE, "PowerState"); /github/workspace/src/12960593.patch total: 1 errors, 9 warnings, 197 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. NOTE: Whitespace errors detected. You may wish to use scripts/cleanpatch or scripts/cleanfile /github/workspace/src/12960593.patch has style problems, please review. NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS.
tedd_an/gitlint success Gitlint PASS

Commit Message

Bastien Nocera Aug. 31, 2022, 9:19 a.m. UTC
This property should allow any program to show whether an adapter is in
the process of being turned on.

As turning on an adapter isn't instantaneous, it's important that the UI
reflects the transitional state of the adapter's power, and doesn't
assume the device is already turned on but not yet working, or still off
despite having requested for it to be turned on, in both cases making
the UI feel unresponsive.

This can also not be implemented in front-ends directly as, then,
the status of an adapter wouldn't be reflected correctly in the Settings
window if it's turned on in the system menu. Implementing it in the
front-ends would also preclude from having feedback about the state of
the adapter when bluetoothd is the one powering up the adapter after the
rfkill was unblocked.

See https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/121
and the original https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/5773
---
 src/adapter.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 87 insertions(+), 1 deletion(-)

Comments

Luiz Augusto von Dentz Aug. 31, 2022, 8:03 p.m. UTC | #1
Hi Bastien,

On Wed, Aug 31, 2022 at 2:32 AM Bastien Nocera <hadess@hadess.net> wrote:
>
> This property should allow any program to show whether an adapter is in
> the process of being turned on.
>
> As turning on an adapter isn't instantaneous, it's important that the UI
> reflects the transitional state of the adapter's power, and doesn't
> assume the device is already turned on but not yet working, or still off
> despite having requested for it to be turned on, in both cases making
> the UI feel unresponsive.
>
> This can also not be implemented in front-ends directly as, then,
> the status of an adapter wouldn't be reflected correctly in the Settings
> window if it's turned on in the system menu. Implementing it in the
> front-ends would also preclude from having feedback about the state of
> the adapter when bluetoothd is the one powering up the adapter after the
> rfkill was unblocked.
>
> See https://gitlab.gnome.org/GNOME/gnome-bluetooth/-/issues/121
> and the original https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/5773
> ---
>  src/adapter.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 87 insertions(+), 1 deletion(-)
>
> diff --git a/src/adapter.c b/src/adapter.c
> index 641db67f9..e295ef247 100644
> --- a/src/adapter.c
> +++ b/src/adapter.c
> @@ -239,6 +239,12 @@ struct btd_adapter_pin_cb_iter {
>         /* When the iterator reaches the end, it is NULL and attempt is 0 */
>  };
>
> +enum {
> +       ADAPTER_POWER_STATE_TARGET_NONE = 0,
> +       ADAPTER_POWER_STATE_TARGET_OFF,
> +       ADAPTER_POWER_STATE_TARGET_ON
> +};

Lets take out the TARGET portion and have all the states PowerState
can assume including the transitioning ones.

> +
>  struct btd_adapter {
>         int ref_count;
>
> @@ -253,6 +259,7 @@ struct btd_adapter {
>         bool blocked;                   /* whether rfkill is enabled */
>         uint32_t supported_settings;    /* controller supported settings */
>         uint32_t pending_settings;      /* pending controller settings */
> +       uint32_t power_state_target;    /* the target power state */

Let's have the value stored as the enum here so it reflects directly
the values PowerState property can assume.

>         uint32_t current_settings;      /* current controller settings */
>
>         char *path;                     /* adapter object path */
> @@ -580,6 +587,8 @@ static void settings_changed(struct btd_adapter *adapter, uint32_t settings)
>         if (changed_mask & MGMT_SETTING_POWERED) {
>                 g_dbus_emit_property_changed(dbus_conn, adapter->path,
>                                         ADAPTER_INTERFACE, "Powered");
> +               g_dbus_emit_property_changed(dbus_conn, adapter->path,
> +                                       ADAPTER_INTERFACE, "PowerState");
>
>                 if (adapter->current_settings & MGMT_SETTING_POWERED) {
>                         adapter_start(adapter);
> @@ -619,6 +628,16 @@ static void settings_changed(struct btd_adapter *adapter, uint32_t settings)
>         }
>  }
>
> +static void reset_power_state_target(struct btd_adapter *adapter, uint8_t value)
> +{
> +       if ((value &&
> +            adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_ON) ||
> +           (!value &&
> +            adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_OFF)) {
> +               adapter->power_state_target = ADAPTER_POWER_STATE_TARGET_NONE;
> +       }
> +}

Id suggest we add DBG statement to make it easier to debug, and rework
a little bit so it takes care of updating the property when the state
changes:

static void adapter_set_power_state(struct btd_adapter *adapter, enum value)
{
    if (adapter->power_state == value)
        return;

    DBG("%s", adapter_power_state_str(value));
...update...

    g_dbus_emit_property_changed(dbus_conn, adapter->path,
                                               ADAPTER_INTERFACE, "PowerState");
}

>  static void new_settings_callback(uint16_t index, uint16_t length,
>                                         const void *param, void *user_data)
>  {
> @@ -636,6 +655,9 @@ static void new_settings_callback(uint16_t index, uint16_t length,
>         if (settings == adapter->current_settings)
>                 return;
>
> +       if ((adapter->current_settings ^ settings) & MGMT_SETTING_POWERED)
> +               reset_power_state_target(adapter, settings & MGMT_SETTING_POWERED ? 0x01 : 0x00);
> +
>         DBG("Settings: 0x%08x", settings);
>
>         settings_changed(adapter, settings);
> @@ -644,6 +666,7 @@ static void new_settings_callback(uint16_t index, uint16_t length,
>  struct set_mode_data {
>         struct btd_adapter *adapter;
>         uint32_t setting;
> +       uint8_t value;
>  };
>
>  static void set_mode_complete(uint8_t status, uint16_t length,
> @@ -658,6 +681,8 @@ static void set_mode_complete(uint8_t status, uint16_t length,
>                 if (status == MGMT_STATUS_RFKILLED)
>                         adapter->blocked = true;
>                 adapter->pending_settings &= ~data->setting;
> +               if (data->setting & MGMT_SETTING_POWERED)
> +                       reset_power_state_target(adapter, data->value);
>                 return;
>         }
>
> @@ -695,6 +720,11 @@ static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
>         switch (opcode) {
>         case MGMT_OP_SET_POWERED:
>                 setting = MGMT_SETTING_POWERED;
> +               adapter->power_state_target = mode ?
> +                       ADAPTER_POWER_STATE_TARGET_ON :
> +                       ADAPTER_POWER_STATE_TARGET_OFF;
> +               g_dbus_emit_property_changed(dbus_conn, adapter->path,
> +                                               ADAPTER_INTERFACE, "PowerState");
>                 break;
>         case MGMT_OP_SET_CONNECTABLE:
>                 setting = MGMT_SETTING_CONNECTABLE;
> @@ -715,6 +745,7 @@ static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
>         data = g_new0(struct set_mode_data, 1);
>         data->adapter = adapter;
>         data->setting = setting;
> +       data->value = mode;
>
>         if (mgmt_send(adapter->mgmt, opcode,
>                                 adapter->dev_id, sizeof(cp), &cp,
> @@ -722,8 +753,13 @@ static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
>                 adapter->pending_settings |= setting;
>                 return true;
>         }
> -
>         g_free(data);
> +       if (setting == MGMT_SETTING_POWERED) {
> +               /* cancel the earlier setting */
> +               adapter->power_state_target = ADAPTER_POWER_STATE_TARGET_NONE;
> +               g_dbus_emit_property_changed(dbus_conn, adapter->path,
> +                                               ADAPTER_INTERFACE, "PowerState");
> +       }
>         btd_error(adapter->dev_id, "Failed to set mode for index %u",
>                                                         adapter->dev_id);
>
> @@ -2901,6 +2937,7 @@ struct property_set_data {
>         struct btd_adapter *adapter;
>         uint32_t setting;
>         GDBusPendingPropertySet id;
> +       uint8_t value;
>  };
>
>  static void property_set_mode_complete(uint8_t status, uint16_t length,
> @@ -2928,6 +2965,8 @@ static void property_set_mode_complete(uint8_t status, uint16_t length,
>                                                         mgmt_errstr(status));
>
>                 adapter->pending_settings &= ~data->setting;
> +               if (data->setting & MGMT_SETTING_POWERED)
> +                       reset_power_state_target(adapter, data->value);
>                 return;
>         }
>
> @@ -3051,6 +3090,16 @@ static void property_set_mode(struct btd_adapter *adapter, uint32_t setting,
>         data->adapter = adapter;
>         data->setting = setting;
>         data->id = id;
> +       data->setting = setting;
> +       data->value = mode;
> +
> +       if (setting == MGMT_SETTING_POWERED) {
> +               adapter->power_state_target = mode ?
> +                       ADAPTER_POWER_STATE_TARGET_ON :
> +                       ADAPTER_POWER_STATE_TARGET_OFF;
> +               g_dbus_emit_property_changed(dbus_conn, adapter->path,
> +                                               ADAPTER_INTERFACE, "PowerState");
> +       }
>
>         if (mgmt_send(adapter->mgmt, opcode, adapter->dev_id, len, param,
>                         property_set_mode_complete, data, g_free) > 0) {
> @@ -3059,6 +3108,12 @@ static void property_set_mode(struct btd_adapter *adapter, uint32_t setting,
>         }
>
>         g_free(data);
> +       if (setting == MGMT_SETTING_POWERED) {
> +               /* cancel the earlier setting */
> +               adapter->power_state_target = ADAPTER_POWER_STATE_TARGET_NONE;
> +               g_dbus_emit_property_changed(dbus_conn, adapter->path,
> +                                               ADAPTER_INTERFACE, "PowerState");
> +       }
>
>  failed:
>         btd_error(adapter->dev_id, "Failed to set mode for index %u",
> @@ -3090,6 +3145,31 @@ static void property_set_powered(const GDBusPropertyTable *property,
>         property_set_mode(adapter, MGMT_SETTING_POWERED, iter, id);
>  }
>
> +static gboolean property_get_power_state(const GDBusPropertyTable *property,
> +                                       DBusMessageIter *iter, void *user_data)
> +{
> +       struct btd_adapter *adapter = user_data;
> +       const char *str;
> +
> +       if (adapter->blocked) {
> +               str = "off-blocked";
> +       } else if (adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_NONE) {
> +               if (adapter->current_settings & MGMT_SETTING_POWERED)
> +                       str = "on";
> +               else
> +                       str = "off";
> +       } else {
> +               if (adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_ON)
> +                       str = "off-enabling";
> +               else
> +                       str = "on-disabling";
> +       }
> +
> +       dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &str);

With the suggestion above this should be just a matter of:

    const char *str = adapter_power_state_str(adapter->power_state);

    dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &str);

So any updates to the enum, etc, are reflected directly as well since
we will need to update adapter_power_state_str.

> +       return TRUE;
> +}
> +
>  static gboolean property_get_discoverable(const GDBusPropertyTable *property,
>                                         DBusMessageIter *iter, void *user_data)
>  {
> @@ -3728,6 +3808,8 @@ static const GDBusPropertyTable adapter_properties[] = {
>         { "Alias", "s", property_get_alias, property_set_alias },
>         { "Class", "u", property_get_class },
>         { "Powered", "b", property_get_powered, property_set_powered },
> +       { "PowerState", "s", property_get_power_state, NULL, NULL,
> +                            G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
>         { "Discoverable", "b", property_get_discoverable,
>                                         property_set_discoverable },
>         { "DiscoverableTimeout", "u", property_get_discoverable_timeout,
> @@ -5534,6 +5616,8 @@ static void adapter_start(struct btd_adapter *adapter)
>  {
>         g_dbus_emit_property_changed(dbus_conn, adapter->path,
>                                                 ADAPTER_INTERFACE, "Powered");
> +       g_dbus_emit_property_changed(dbus_conn, adapter->path,
> +                                               ADAPTER_INTERFACE, "PowerState");
>
>         DBG("adapter %s has been enabled", adapter->path);
>
> @@ -7277,6 +7361,8 @@ static void adapter_stop(struct btd_adapter *adapter)
>
>         g_dbus_emit_property_changed(dbus_conn, adapter->path,
>                                                 ADAPTER_INTERFACE, "Powered");
> +       g_dbus_emit_property_changed(dbus_conn, adapter->path,
> +                                               ADAPTER_INTERFACE, "PowerState");
>
>         DBG("adapter %s has been disabled", adapter->path);
>  }
> --
> 2.37.2
>
Bastien Nocera Sept. 1, 2022, 10:43 a.m. UTC | #2
On Wed, 2022-08-31 at 13:03 -0700, Luiz Augusto von Dentz wrote:
> > +enum {
> > +       ADAPTER_POWER_STATE_TARGET_NONE = 0,
> > +       ADAPTER_POWER_STATE_TARGET_OFF,
> > +       ADAPTER_POWER_STATE_TARGET_ON
> > +};
> 
> Lets take out the TARGET portion and have all the states PowerState
> can assume including the transitioning ones.

Done, with the rest of the changes, in v5.

I've also fixed the initial rfkill state if the adapter is blocked
before bluetoothd is started.
diff mbox series

Patch

diff --git a/src/adapter.c b/src/adapter.c
index 641db67f9..e295ef247 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -239,6 +239,12 @@  struct btd_adapter_pin_cb_iter {
 	/* When the iterator reaches the end, it is NULL and attempt is 0 */
 };
 
+enum {
+	ADAPTER_POWER_STATE_TARGET_NONE = 0,
+	ADAPTER_POWER_STATE_TARGET_OFF,
+	ADAPTER_POWER_STATE_TARGET_ON
+};
+
 struct btd_adapter {
 	int ref_count;
 
@@ -253,6 +259,7 @@  struct btd_adapter {
 	bool blocked;			/* whether rfkill is enabled */
 	uint32_t supported_settings;	/* controller supported settings */
 	uint32_t pending_settings;	/* pending controller settings */
+	uint32_t power_state_target;	/* the target power state */
 	uint32_t current_settings;	/* current controller settings */
 
 	char *path;			/* adapter object path */
@@ -580,6 +587,8 @@  static void settings_changed(struct btd_adapter *adapter, uint32_t settings)
 	if (changed_mask & MGMT_SETTING_POWERED) {
 	        g_dbus_emit_property_changed(dbus_conn, adapter->path,
 					ADAPTER_INTERFACE, "Powered");
+	        g_dbus_emit_property_changed(dbus_conn, adapter->path,
+					ADAPTER_INTERFACE, "PowerState");
 
 		if (adapter->current_settings & MGMT_SETTING_POWERED) {
 			adapter_start(adapter);
@@ -619,6 +628,16 @@  static void settings_changed(struct btd_adapter *adapter, uint32_t settings)
 	}
 }
 
+static void reset_power_state_target(struct btd_adapter *adapter, uint8_t value)
+{
+	if ((value &&
+	     adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_ON) ||
+	    (!value &&
+	     adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_OFF)) {
+		adapter->power_state_target = ADAPTER_POWER_STATE_TARGET_NONE;
+	}
+}
+
 static void new_settings_callback(uint16_t index, uint16_t length,
 					const void *param, void *user_data)
 {
@@ -636,6 +655,9 @@  static void new_settings_callback(uint16_t index, uint16_t length,
 	if (settings == adapter->current_settings)
 		return;
 
+	if ((adapter->current_settings ^ settings) & MGMT_SETTING_POWERED)
+		reset_power_state_target(adapter, settings & MGMT_SETTING_POWERED ? 0x01 : 0x00);
+
 	DBG("Settings: 0x%08x", settings);
 
 	settings_changed(adapter, settings);
@@ -644,6 +666,7 @@  static void new_settings_callback(uint16_t index, uint16_t length,
 struct set_mode_data {
 	struct btd_adapter *adapter;
 	uint32_t setting;
+	uint8_t value;
 };
 
 static void set_mode_complete(uint8_t status, uint16_t length,
@@ -658,6 +681,8 @@  static void set_mode_complete(uint8_t status, uint16_t length,
 		if (status == MGMT_STATUS_RFKILLED)
 			adapter->blocked = true;
 		adapter->pending_settings &= ~data->setting;
+		if (data->setting & MGMT_SETTING_POWERED)
+			reset_power_state_target(adapter, data->value);
 		return;
 	}
 
@@ -695,6 +720,11 @@  static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
 	switch (opcode) {
 	case MGMT_OP_SET_POWERED:
 		setting = MGMT_SETTING_POWERED;
+		adapter->power_state_target = mode ?
+			ADAPTER_POWER_STATE_TARGET_ON :
+			ADAPTER_POWER_STATE_TARGET_OFF;
+		g_dbus_emit_property_changed(dbus_conn, adapter->path,
+						ADAPTER_INTERFACE, "PowerState");
 		break;
 	case MGMT_OP_SET_CONNECTABLE:
 		setting = MGMT_SETTING_CONNECTABLE;
@@ -715,6 +745,7 @@  static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
 	data = g_new0(struct set_mode_data, 1);
 	data->adapter = adapter;
 	data->setting = setting;
+	data->value = mode;
 
 	if (mgmt_send(adapter->mgmt, opcode,
 				adapter->dev_id, sizeof(cp), &cp,
@@ -722,8 +753,13 @@  static bool set_mode(struct btd_adapter *adapter, uint16_t opcode,
 		adapter->pending_settings |= setting;
 		return true;
 	}
-
 	g_free(data);
+	if (setting == MGMT_SETTING_POWERED) {
+		/* cancel the earlier setting */
+		adapter->power_state_target = ADAPTER_POWER_STATE_TARGET_NONE;
+		g_dbus_emit_property_changed(dbus_conn, adapter->path,
+						ADAPTER_INTERFACE, "PowerState");
+	}
 	btd_error(adapter->dev_id, "Failed to set mode for index %u",
 							adapter->dev_id);
 
@@ -2901,6 +2937,7 @@  struct property_set_data {
 	struct btd_adapter *adapter;
 	uint32_t setting;
 	GDBusPendingPropertySet id;
+	uint8_t value;
 };
 
 static void property_set_mode_complete(uint8_t status, uint16_t length,
@@ -2928,6 +2965,8 @@  static void property_set_mode_complete(uint8_t status, uint16_t length,
 							mgmt_errstr(status));
 
 		adapter->pending_settings &= ~data->setting;
+		if (data->setting & MGMT_SETTING_POWERED)
+			reset_power_state_target(adapter, data->value);
 		return;
 	}
 
@@ -3051,6 +3090,16 @@  static void property_set_mode(struct btd_adapter *adapter, uint32_t setting,
 	data->adapter = adapter;
 	data->setting = setting;
 	data->id = id;
+	data->setting = setting;
+	data->value = mode;
+
+	if (setting == MGMT_SETTING_POWERED) {
+		adapter->power_state_target = mode ?
+			ADAPTER_POWER_STATE_TARGET_ON :
+			ADAPTER_POWER_STATE_TARGET_OFF;
+		g_dbus_emit_property_changed(dbus_conn, adapter->path,
+						ADAPTER_INTERFACE, "PowerState");
+	}
 
 	if (mgmt_send(adapter->mgmt, opcode, adapter->dev_id, len, param,
 			property_set_mode_complete, data, g_free) > 0) {
@@ -3059,6 +3108,12 @@  static void property_set_mode(struct btd_adapter *adapter, uint32_t setting,
 	}
 
 	g_free(data);
+	if (setting == MGMT_SETTING_POWERED) {
+		/* cancel the earlier setting */
+		adapter->power_state_target = ADAPTER_POWER_STATE_TARGET_NONE;
+		g_dbus_emit_property_changed(dbus_conn, adapter->path,
+						ADAPTER_INTERFACE, "PowerState");
+	}
 
 failed:
 	btd_error(adapter->dev_id, "Failed to set mode for index %u",
@@ -3090,6 +3145,31 @@  static void property_set_powered(const GDBusPropertyTable *property,
 	property_set_mode(adapter, MGMT_SETTING_POWERED, iter, id);
 }
 
+static gboolean property_get_power_state(const GDBusPropertyTable *property,
+					DBusMessageIter *iter, void *user_data)
+{
+	struct btd_adapter *adapter = user_data;
+	const char *str;
+
+	if (adapter->blocked) {
+		str = "off-blocked";
+	} else if (adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_NONE) {
+		if (adapter->current_settings & MGMT_SETTING_POWERED)
+			str = "on";
+		else
+			str = "off";
+	} else {
+		if (adapter->power_state_target == ADAPTER_POWER_STATE_TARGET_ON)
+			str = "off-enabling";
+		else
+			str = "on-disabling";
+	}
+
+	dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &str);
+
+	return TRUE;
+}
+
 static gboolean property_get_discoverable(const GDBusPropertyTable *property,
 					DBusMessageIter *iter, void *user_data)
 {
@@ -3728,6 +3808,8 @@  static const GDBusPropertyTable adapter_properties[] = {
 	{ "Alias", "s", property_get_alias, property_set_alias },
 	{ "Class", "u", property_get_class },
 	{ "Powered", "b", property_get_powered, property_set_powered },
+	{ "PowerState", "s", property_get_power_state, NULL, NULL,
+			     G_DBUS_PROPERTY_FLAG_EXPERIMENTAL },
 	{ "Discoverable", "b", property_get_discoverable,
 					property_set_discoverable },
 	{ "DiscoverableTimeout", "u", property_get_discoverable_timeout,
@@ -5534,6 +5616,8 @@  static void adapter_start(struct btd_adapter *adapter)
 {
 	g_dbus_emit_property_changed(dbus_conn, adapter->path,
 						ADAPTER_INTERFACE, "Powered");
+	g_dbus_emit_property_changed(dbus_conn, adapter->path,
+						ADAPTER_INTERFACE, "PowerState");
 
 	DBG("adapter %s has been enabled", adapter->path);
 
@@ -7277,6 +7361,8 @@  static void adapter_stop(struct btd_adapter *adapter)
 
 	g_dbus_emit_property_changed(dbus_conn, adapter->path,
 						ADAPTER_INTERFACE, "Powered");
+	g_dbus_emit_property_changed(dbus_conn, adapter->path,
+						ADAPTER_INTERFACE, "PowerState");
 
 	DBG("adapter %s has been disabled", adapter->path);
 }