linux-kernel - [PATCH v1 4/4] Bluetooth: btrtl: Enable MSFT extension for RTL8822CE controller

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Message-Id: <20201216231652.v1.4.I369d2fc751e660f78e2930743aa368e0fe1bfd53@changeid>
Date:   Wed, 16 Dec 2020 23:17:33 -0800
From:   Miao-chen Chou <mcchou@...omium.org>
To:     Bluetooth Kernel Mailing List <linux-bluetooth@...r.kernel.org>
Cc:     Alain Michaud <alainm@...omium.org>,
        Archie Pusaka <apusaka@...omium.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Luiz Augusto von Dentz <luiz.von.dentz@...el.com>,
        Miao-chen Chou <mcchou@...omium.org>,
        Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 4/4] Bluetooth: btrtl: Enable MSFT extension for RTL8822CE controller

The Realtek RTL8822CE Bluetooth controller support Microsoft vendor
extension and it uses 0xFCF0 for VsMsftOpCode.

The following test step was performed.
- Boot the test device with RTL8822CE and verify the INFO print in
dmesg.

Signed-off-by: Miao-chen Chou <mcchou@...omium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
Reviewed-by: Archie Pusaka <apusaka@...omium.org>
---

 drivers/bluetooth/btrtl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index a4f7cace66b06..94df4e94999d5 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -658,6 +658,12 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
 		}
 	}
 
+	/* RTL8822CE supports the Microsoft vendor extension and uses 0xFCF0
+	 * for VsMsftOpCode.
+	 */
+	if (lmp_subver == RTL_ROM_LMP_8822B)
+		hci_set_msft_opcode(hdev, 0xFCF0);
+
 	return btrtl_dev;
 
 err_free:
-- 
2.29.2.684.gfbc64c5ab5-goog