[PATCH 3/3] Bluetooth: Set LE Default PHY preferences
From: Marcel Holtmann <marcel@holtmann.org>
Date: 2017-05-02 06:54:19
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
If the LE Set Default PHY command is supported, the indicate to the controller that the host has no preferences for transmitter PHY or receiver PHY selection. Issuing this command gives the controller a clear indication that other PHY can be selected if available. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> --- include/net/bluetooth/hci.h | 7 +++++++ net/bluetooth/hci_core.c | 12 ++++++++++++ 2 files changed, 19 insertions(+)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index dd43cfdd443a..fe98f0a5bef0 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h@@ -1499,6 +1499,13 @@ struct hci_rp_le_read_max_data_len { __le16 rx_time; } __packed; +#define HCI_OP_LE_SET_DEFAULT_PHY 0x2031 +struct hci_cp_le_set_default_phy { + __u8 all_phys; + __u8 tx_phys; + __u8 rx_phys; +} __packed; + /* ---- HCI Events ---- */ #define HCI_EV_INQUIRY_COMPLETE 0x01
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 88a616a2b959..43fecd59dfef 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c@@ -794,6 +794,18 @@ static int hci_init4_req(struct hci_request *req, unsigned long opt) hci_req_add(req, HCI_OP_LE_WRITE_DEF_DATA_LEN, sizeof(cp), &cp); } + /* Set Default PHY parameters if command is supported */ + if (hdev->commands[35] & 0x20) { + struct hci_cp_le_set_default_phy cp; + + /* No transmitter PHY or receiver PHY preferences */ + cp.all_phys = 0x03; + cp.tx_phys = 0; + cp.rx_phys = 0; + + hci_req_add(req, HCI_OP_LE_SET_DEFAULT_PHY, sizeof(cp), &cp); + } + return 0; }
--
2.9.3