[PATCH BlueZ v2 4/8] client/btpclient: Add BTP_OP_PACS_SET_LOCATION support

["Frédéric Danis" <frederic.danis@collabora.com>]

This allows to store the expected location for a local endpoint.
---
 Makefile.tools               |   1 +
 client/btpclient/btpclient.h |   3 +
 client/btpclient/core.c      |  16 ++++++
 client/btpclient/pacs.c      | 107 +++++++++++++++++++++++++++++++++++
 client/btpclient/pacs.h      |  13 +++++
 src/shared/btp.h             |   9 +++
 6 files changed, 149 insertions(+)
 create mode 100644 client/btpclient/pacs.c
 create mode 100644 client/btpclient/pacs.h

diff --git a/Makefile.tools b/Makefile.tools
index 5c1130bff..0ca80a293 100644
--- a/Makefile.tools
+++ b/Makefile.tools
@@ -573,6 +573,7 @@ client_btpclient_btpclient_SOURCES = client/btpclient/btpclient.c \
 				client/btpclient/core.c client/btpclient/core.h \
 				client/btpclient/gap.c client/btpclient/gap.h \
 				client/btpclient/gatt.c client/btpclient/gatt.h \
+				client/btpclient/pacs.c client/btpclient/pacs.h \
 				client/btpclient/vendor.c client/btpclient/vendor.h
 client_btpclient_btpclient_LDADD = lib/libbluetooth-internal.la \
 				src/libshared-ell.la $(ell_ldadd)
diff --git a/client/btpclient/btpclient.h b/client/btpclient/btpclient.h
index 0d81405d3..2ba612ade 100644
--- a/client/btpclient/btpclient.h
+++ b/client/btpclient/btpclient.h
@@ -19,6 +19,9 @@ struct btp_adapter {
 	uint32_t default_settings;
 	struct l_queue *devices;
 
+	uint32_t sink_locations;
+	uint32_t source_locations;
+
 	uint8_t target_latency;
 };
 
diff --git a/client/btpclient/core.c b/client/btpclient/core.c
index 8ab3f3e34..bbbc7edfd 100644
--- a/client/btpclient/core.c
+++ b/client/btpclient/core.c
@@ -18,6 +18,7 @@
 #include "core.h"
 #include "gap.h"
 #include "gatt.h"
+#include "pacs.h"
 #include "vendor.h"
 
 static struct btp *btp;
@@ -67,6 +68,7 @@ static void btp_core_read_services(uint8_t index, const void *param,
 		BTP_CORE_SERVICE,
 		BTP_GAP_SERVICE,
 		BTP_GATT_SERVICE,
+		BTP_PACS_SERVICE,
 		BTP_ASCS_SERVICE,
 		BTP_BAP_SERVICE,
 		BTP_VENDOR_SERVICE,
@@ -130,6 +132,14 @@ static void btp_core_register(uint8_t index, const void *param,
 		if (!gatt_register_service(btp, dbus, client))
 			goto failed;
 
+		break;
+	case BTP_PACS_SERVICE:
+		if (pacs_is_service_registered())
+			goto failed;
+
+		if (!pacs_register_service(btp, dbus, client))
+			goto failed;
+
 		break;
 	case BTP_ASCS_SERVICE:
 		if (ascs_is_service_registered())
@@ -197,6 +207,12 @@ static void btp_core_unregister(uint8_t index, const void *param,
 
 		gatt_unregister_service(btp);
 		break;
+	case BTP_PACS_SERVICE:
+		if (!pacs_is_service_registered())
+			goto failed;
+
+		ascs_unregister_service(btp);
+		break;
 	case BTP_ASCS_SERVICE:
 		if (!ascs_is_service_registered())
 			goto failed;
diff --git a/client/btpclient/pacs.c b/client/btpclient/pacs.c
new file mode 100644
index 000000000..6277812a0
--- /dev/null
+++ b/client/btpclient/pacs.c
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2026  Collabora Ltd.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <ell/ell.h>
+
+#include "bluetooth/bluetooth.h"
+#include "bluetooth/uuid.h"
+#include "src/shared/btp.h"
+#include "btpclient.h"
+#include "pacs.h"
+
+static struct btp *btp;
+static bool pacs_service_registered;
+
+static void btp_pacs_read_commands(uint8_t index, const void *param,
+					uint16_t length, void *user_data)
+{
+	const uint8_t supported_commands[] = {
+		BTP_OP_PACS_READ_SUPPORTED_COMMANDS,
+		BTP_OP_PACS_SET_LOCATION,
+	};
+	uint8_t *commands = NULL;
+	size_t commands_len = 0;
+	size_t i;
+
+	if (index != BTP_INDEX_NON_CONTROLLER) {
+		btp_send_error(btp, BTP_PACS_SERVICE, index,
+						BTP_ERROR_INVALID_INDEX);
+		return;
+	}
+
+	for (i = 0; i < L_ARRAY_SIZE(supported_commands); i++) {
+		if (!add_supported_command(&commands, &commands_len,
+						supported_commands[i]))
+			goto failed;
+	}
+
+	btp_send(btp, BTP_PACS_SERVICE, BTP_OP_PACS_READ_SUPPORTED_COMMANDS,
+			BTP_INDEX_NON_CONTROLLER, commands_len, commands);
+
+	l_free(commands);
+
+	return;
+
+failed:
+	l_free(commands);
+	btp_send_error(btp, BTP_PACS_SERVICE, index, BTP_ERROR_FAIL);
+}
+
+static void btp_pacs_set_location(uint8_t index, const void *param,
+					uint16_t length, void *user_data)
+{
+	struct btp_adapter *adapter = find_adapter_by_index(index);
+	const struct btp_pacs_set_location_cp *cp = param;
+
+	switch (cp->dir) {
+	case BTP_BAP_DIR_SINK:
+		adapter->sink_locations = cp->location;
+		break;
+	case BTP_BAP_DIR_SOURCE:
+		adapter->source_locations = cp->location;
+		break;
+	default:
+		btp_send_error(btp, BTP_PACS_SERVICE, index, BTP_ERROR_FAIL);
+		return;
+	}
+
+	btp_send(btp, BTP_PACS_SERVICE, BTP_OP_PACS_SET_LOCATION, index, 0,
+									NULL);
+}
+
+bool pacs_register_service(struct btp *btp_, struct l_dbus *dbus_,
+					struct l_dbus_client *client)
+{
+	btp = btp_;
+
+	btp_register(btp, BTP_PACS_SERVICE, BTP_OP_PACS_READ_SUPPORTED_COMMANDS,
+					btp_pacs_read_commands, NULL, NULL);
+
+	btp_register(btp, BTP_PACS_SERVICE, BTP_OP_PACS_SET_LOCATION,
+					btp_pacs_set_location, NULL, NULL);
+
+	pacs_service_registered = true;
+
+	return true;
+}
+
+void pacs_unregister_service(struct btp *btp)
+{
+	btp_unregister_service(btp, BTP_PACS_SERVICE);
+	pacs_service_registered = false;
+}
+
+bool pacs_is_service_registered(void)
+{
+	return pacs_service_registered;
+}
diff --git a/client/btpclient/pacs.h b/client/btpclient/pacs.h
new file mode 100644
index 000000000..a1579a8d6
--- /dev/null
+++ b/client/btpclient/pacs.h
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2026  Collabora Ltd.
+ *
+ */
+
+bool pacs_register_service(struct btp *btp_, struct l_dbus *dbus_,
+					struct l_dbus_client *client);
+void pacs_unregister_service(struct btp *btp);
+bool pacs_is_service_registered(void);
diff --git a/src/shared/btp.h b/src/shared/btp.h
index 65a8c8b6a..8ad57f48f 100644
--- a/src/shared/btp.h
+++ b/src/shared/btp.h
@@ -26,6 +26,7 @@
 #define BTP_GATT_SERVICE	2
 #define BTP_L2CAP_SERVICE	3
 #define BTP_MESH_NODE_SERVICE	4
+#define BTP_PACS_SERVICE	12
 #define BTP_ASCS_SERVICE	13
 #define BTP_BAP_SERVICE		14
 #define BTP_VENDOR_SERVICE	255
@@ -427,6 +428,14 @@ struct btp_gatt_write_rp {
 	uint8_t att_response;
 } __packed;
 
+#define BTP_OP_PACS_READ_SUPPORTED_COMMANDS	0x01
+
+#define BTP_OP_PACS_SET_LOCATION		0x03
+struct btp_pacs_set_location_cp {
+	uint8_t dir;
+	uint32_t location;
+} __packed;
+
 #define BTP_OP_ASCS_READ_SUPPORTED_COMMANDS	0x01
 
 #define BTP_OP_ASCS_CONFIGURE_CODEC		0x02
-- 
2.43.0