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From:   Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To:     linux-bluetooth@vger.kernel.org
Subject: [PATCH v2 2/2] Bluetooth: Enable all supported LE PHY by default
Date:   Wed,  7 Sep 2022 16:22:32 -0700
Message-Id: <20220907232232.3248525-2-luiz.dentz@gmail.com>
In-Reply-To: <20220907232232.3248525-1-luiz.dentz@gmail.com>
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From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This enables 2M and Coded PHY by default if they are marked as supported
in the LE features bits.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
 include/net/bluetooth/hci_core.h |  4 ++++
 net/bluetooth/hci_sync.c         | 28 ++++++++++++++++++++++++----
 net/bluetooth/mgmt.c             |  4 ++--
 3 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index c54bc71254af..b55551134baa 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1665,9 +1665,13 @@ void hci_conn_del_sysfs(struct hci_conn *conn);
 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
 		      ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
 
+#define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
+
 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
 		      ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
 
+#define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED))
+
 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
 			 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
 
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 41b6d19c70b0..5798b2c6134d 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4348,18 +4348,38 @@ static int hci_le_set_write_def_data_len_sync(struct hci_dev *hdev)
 				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
 }
 
-/* Set Default PHY parameters if command is supported */
+/* Set Default PHY parameters if command is supported, enables all supported
+ * PHYs according to the LE Features bits.
+ */
 static int hci_le_set_default_phy_sync(struct hci_dev *hdev)
 {
 	struct hci_cp_le_set_default_phy cp;
 
-	if (!(hdev->commands[35] & 0x20))
+	if (!(hdev->commands[35] & 0x20)) {
+		/* If the command is not supported it means only 1M PHY is
+		 * supported.
+		 */
+		hdev->le_tx_def_phys = HCI_LE_SET_PHY_1M;
+		hdev->le_rx_def_phys = HCI_LE_SET_PHY_1M;
 		return 0;
+	}
 
 	memset(&cp, 0, sizeof(cp));
 	cp.all_phys = 0x00;
-	cp.tx_phys = hdev->le_tx_def_phys;
-	cp.rx_phys = hdev->le_rx_def_phys;
+	cp.tx_phys = HCI_LE_SET_PHY_1M;
+	cp.rx_phys = HCI_LE_SET_PHY_1M;
+
+	/* Enables 2M PHY if supported */
+	if (le_2m_capable(hdev)) {
+		cp.tx_phys |= HCI_LE_SET_PHY_2M;
+		cp.rx_phys |= HCI_LE_SET_PHY_2M;
+	}
+
+	/* Enables Coded PHY if supported */
+	if (le_coded_capable(hdev)) {
+		cp.tx_phys |= HCI_LE_SET_PHY_CODED;
+		cp.rx_phys |= HCI_LE_SET_PHY_CODED;
+	}
 
 	return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_DEFAULT_PHY,
 				     sizeof(cp), &cp, HCI_CMD_TIMEOUT);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 34443db21e44..a090d5ff81f6 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -8380,10 +8380,10 @@ static u32 get_supported_adv_flags(struct hci_dev *hdev)
 		flags |= MGMT_ADV_FLAG_HW_OFFLOAD;
 		flags |= MGMT_ADV_FLAG_CAN_SET_TX_POWER;
 
-		if (hdev->le_features[1] & HCI_LE_PHY_2M)
+		if (le_2m_capable(hdev))
 			flags |= MGMT_ADV_FLAG_SEC_2M;
 
-		if (hdev->le_features[1] & HCI_LE_PHY_CODED)
+		if (le_coded_capable(hdev))
 			flags |= MGMT_ADV_FLAG_SEC_CODED;
 	}
 
-- 
2.37.2