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From:   Sonny Sasaka <sonnysasaka@chromium.org>
To:     linux-bluetooth@vger.kernel.org
Cc:     Sonny Sasaka <sonnysasaka@chromium.org>,
        Miao-chen Chou <mcchou@chromium.org>
Subject: [PATCH BlueZ 4/7] doc: Add Battery Provider API doc
Date:   Tue, 10 Nov 2020 16:37:17 -0800
Message-Id: <20201111003720.1727-5-sonnysasaka@chromium.org>
In-Reply-To: <20201111003720.1727-1-sonnysasaka@chromium.org>
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This patch add the documentation of the Battery Provider which lets
external clients feed battery information to BlueZ if they are able to
decode battery reporting via any profile. BlueZ UI clients can then use
the org.bluez.Battery1 API as a single source of battery information
coming from many different profiles.

Reviewed-by: Miao-chen Chou <mcchou@chromium.org>

---
 doc/battery-api.txt | 55 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/doc/battery-api.txt b/doc/battery-api.txt
index dc7dbeda2..058bf0c6e 100644
--- a/doc/battery-api.txt
+++ b/doc/battery-api.txt
@@ -12,3 +12,58 @@ Object path	[variable prefix]/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX
 Properties	byte Percentage [readonly]
 
 			The percentage of battery left as an unsigned 8-bit integer.
+
+		string Source [readonly, optional, experimental]
+
+			Describes where the battery information comes from
+			(e.g. "HFP 1.7", "HID").
+			This property is informational only and may be useful
+			for debugging purposes.
+
+
+Battery Provider Manager hierarchy
+==================================
+A battery provider starts by registering itself as a battery provider with the
+RegisterBatteryProvider method passing an object path as the provider ID. Then,
+it can start exposing org.bluez.BatteryProvider1 objects having the path
+starting with the given provider ID. It can also remove objects at any time.
+BlueZ will stop monitoring these exposed and removed objects after
+UnregisterBatteryProvider is called for that provider ID.
+
+Service		org.bluez
+Interface	org.bluez.BatteryProviderManager1 [experimental]
+Object path	/org/bluez/{hci0,hci1,...}
+
+Methods		void RegisterBatteryProvider(object provider)
+
+			This registers a battery provider. A registered
+			battery provider can then expose objects with
+			org.bluez.BatteryProvider1 interface described below.
+
+		void UnregisterBatteryProvider(object provider)
+
+			This unregisters a battery provider. After
+			unregistration, the BatteryProvider1 objects provided
+			by this client are ignored by BlueZ.
+
+
+Battery Provider hierarchy
+==========================
+
+Service		<client D-Bus address>
+Interface	org.bluez.BatteryProvider1 [experimental]
+Object path	{provider_root}/org/bluez/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX
+
+Properties	byte Percentage [readonly]
+
+			The percentage of battery left as an unsigned 8-bit
+			integer.
+
+		string Source [readonly, optional]
+
+			Describes where the battery information comes from
+			(e.g. "HFP 1.7", "HID").
+			This property is informational only and may be useful
+			for debugging purposes. The content of this property is
+			a free string, but it is recommended to include the
+			profile name and version to be useful.
-- 
2.26.2