Bluetooth: Classic: add inquiry scan param update

add BR/EDR inquiry scan param update

Signed-off-by: Kai Cheng <[email protected]>

Author: chengkai15

include/zephyr/bluetooth/classic/classic.h

@@ -389,6 +389,48 @@ struct bt_br_page_scan_param {
  */
 int bt_br_page_scan_update_param(const struct bt_br_page_scan_param *param);
 
+struct bt_br_inquiry_scan_param {
+	/** Inquiry scan interval in 0.625 ms units
+	 *  Range: 0x0012 to 0x1000; only even values are valid.
+	 */
+	uint16_t interval;
+
+	/** Inquiry scan window in 0.625 ms units
+	 *  Range: 0x0011 to 0x1000.
+	 */
+	uint16_t window;
+
+	/** Inquiry scan type. */
+	enum bt_br_scan_type type;
+};
+
+/**
+ * @name Defined BR Page Scan timers
+ * @{
+ */
+#define BT_BR_INQUIRY_SCAN_INTERVAL_DEFAULT 0x1000  /* 0x1000, 2.560s, U:0.625 */
+#define BT_BR_INQUIRY_SCAN_WINDOW_DEFAULT   0x0012  /* 0x0012, 11.25mss, U:0.625 */
+
+/**
+ * Helper to declare BR/EDR inquiry scan parameters inline
+ *
+ * @param _interval Inquiry scan interval, N * 0.625 milliseconds
+ * @param _window   Inquiry scan window, N * 0.625 milliseconds
+ * @param _type     BT_BR_SCAN_TYPE_STANDARD or BT_BR_SCAN_TYPE_INTERLACED
+ */
+#define BT_BR_INQUIRY_SCAN_PARAM(_interval, _window, _type) \
+    ((const struct bt_br_inquiry_scan_param[]) { \
+		BT_BR_SCAN_INIT(_interval, _window, _type) \
+    })
+
+#define BT_BR_INQUIRY_SCAN_PARAM_DEFAULT \
+	BT_BR_INQUIRY_SCAN_PARAM( \
+	BT_BR_INQUIRY_SCAN_INTERVAL_DEFAULT, \
+	BT_BR_INQUIRY_SCAN_WINDOW_DEFAULT, \
+	BT_BR_SCAN_TYPE_STANDARD)
+
+int bt_br_inquiry_scan_update_param(const struct bt_br_inquiry_scan_param *param);
+
 /**
  * @brief Set the Class of Device configuration parameter of the local
  *        BR/EDR Controller.

include/zephyr/bluetooth/hci_types.h

@@ -637,6 +637,7 @@ struct bt_hci_rp_write_conn_accept_timeout {
 #define BT_BREDR_SCAN_PAGE                      0x02
 
 #define BT_HCI_OP_WRITE_PAGE_SCAN_ACTIVITY     	BT_OP(BT_OGF_BASEBAND, 0x001c) /* 0x0c1c */
+#define BT_HCI_OP_WRITE_INQUIRY_SCAN_ACTIVITY  	BT_OP(BT_OGF_BASEBAND, 0x001e) /* 0x0c1e */
 struct bt_hci_cp_write_scan_activity {
 	uint16_t interval;
 	uint16_t window;
@@ -843,6 +844,8 @@ struct bt_hci_cp_write_current_iac_lap {
 	struct bt_hci_iac_lap lap[0];
 } __packed;
 
+#define BT_HCI_OP_WRITE_INQUIRY_SCAN_TYPE       BT_OP(BT_OGF_BASEBAND, 0x0043) /* 0x0c43 */
+
 #define BT_HCI_OP_WRITE_INQUIRY_MODE            BT_OP(BT_OGF_BASEBAND, 0x0045) /* 0x0c45 */
 struct bt_hci_cp_write_inquiry_mode {
 	uint8_t  mode;

subsys/bluetooth/host/classic/br.c

@@ -1375,6 +1375,38 @@ int bt_br_page_scan_update_param(const struct bt_br_page_scan_param *param)
 	return 0;
 }
 
+int bt_br_inquiry_scan_update_param(const struct bt_br_inquiry_scan_param *param)
+{
+	int err;
+
+	if (param->interval < 0x0012 || param->interval > 0x1000) {
+		return -EINVAL;
+	}
+
+	if (param->window < 0x0011 || param->window > 0x1000) {
+		return -EINVAL;
+	}
+
+	if (param->interval < param->window) {
+		return -EINVAL;
+	}
+
+	err = bt_br_write_scan_activity(BT_HCI_OP_WRITE_INQUIRY_SCAN_ACTIVITY,
+		param->interval, param->window);
+	if (err) {
+		LOG_ERR("write inquiry scan activity failed (err %d)", err);
+		return err;
+	}
+
+	err = bt_br_write_scan_type(BT_HCI_OP_WRITE_INQUIRY_SCAN_TYPE, param->type);
+	if (err) {
+		LOG_ERR("write inquiry scan type failed (err %d)", err);
+		return err;
+	}
+
+	return 0;
+}
+
 int bt_br_set_class_of_device(uint32_t cod)
 {
 	int err;