linux-kernel - [PATCH v3 1/3] Bluetooth: btrtl: Add btrealtek data struct

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Date:   Thu, 29 Sep 2022 19:44:24 +0800
From:   <hildawu@...ltek.com>
To:     <marcel@...tmann.org>
CC:     <johan.hedberg@...il.com>, <luiz.dentz@...il.com>,
        <linux-bluetooth@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <apusaka@...omium.org>, <yinghsu@...omium.org>,
        <max.chou@...ltek.com>, <alex_lu@...lsil.com.cn>,
        <kidman@...ltek.com>
Subject: [PATCH v3 1/3] Bluetooth: btrtl: Add btrealtek data struct

From: Hilda Wu <hildawu@...ltek.com>

This patch adds a data structure for btrealtek object, and the
definition of vendor behavior flags. It also adds macros to set/test/get
the flags.

Signed-off-by: Hilda Wu <hildawu@...ltek.com>
---
Changes in v3:
 - Update private flag.

Changes in v2:
 - Set the proper priv_size to hci_alloc_dev_priv().
 - Separate commits for functions.
---
---
 drivers/bluetooth/btrtl.h | 21 +++++++++++++++++++++
 drivers/bluetooth/btusb.c |  3 +++
 2 files changed, 24 insertions(+)

diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h
index 2c441bda390a..ebf0101c959b 100644
--- a/drivers/bluetooth/btrtl.h
+++ b/drivers/bluetooth/btrtl.h
@@ -47,6 +47,27 @@ struct rtl_vendor_config {
 	struct rtl_vendor_config_entry entry[];
 } __packed;
 
+enum {
+	REALTEK_ALT6_CONTINUOUS_TX_CHIP,
+
+	__REALTEK_NUM_FLAGS,
+};
+
+struct btrealtek_data {
+	DECLARE_BITMAP(flags, __REALTEK_NUM_FLAGS);
+};
+
+#define btrealtek_set_flag(hdev, nr)					\
+	do {								\
+		struct btrealtek_data *realtek = hci_get_priv((hdev));	\
+		set_bit((nr), realtek->flags);				\
+	} while (0)
+
+#define btrealtek_get_flag(hdev)					\
+	(((struct btrealtek_data *)hci_get_priv(hdev))->flags)
+
+#define btrealtek_test_flag(hdev, nr)	test_bit((nr), btrealtek_get_flag(hdev))
+
 #if IS_ENABLED(CONFIG_BT_RTL)
 
 struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index c3daba17de7f..4c3aed89ff05 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3749,6 +3749,9 @@ static int btusb_probe(struct usb_interface *intf,
 		/* Override the rx handlers */
 		data->recv_event = btusb_recv_event_intel;
 		data->recv_bulk = btusb_recv_bulk_intel;
+	} else if (id->driver_info & BTUSB_REALTEK) {
+		/* Allocate extra space for Realtek device */
+		priv_size += sizeof(struct btrealtek_data);
 	}
 
 	data->recv_acl = hci_recv_frame;
-- 
2.17.1