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Bluetooth: Add support for reading AOSP vendor capabilities

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When drivers indicate support for AOSP vendor extension, initialize them
and read its capabilities.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Marcel Holtmann 2021-04-06 21:55:52 +02:00 committed by Luiz Augusto von Dentz
parent 8ce85ada0a
commit f67743f9e0
6 changed files with 73 additions and 0 deletions
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11
include/net/bluetooth/hci_core.h
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@ -586,6 +586,10 @@ struct hci_dev {
void *msft_data;
#endif
#if IS_ENABLED(CONFIG_BT_AOSPEXT)
bool aosp_capable;
#endif
int (*open)(struct hci_dev *hdev);
int (*close)(struct hci_dev *hdev);
int (*flush)(struct hci_dev *hdev);
@ -1239,6 +1243,13 @@ static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
#endif
}
static inline void hci_set_aosp_capable(struct hci_dev *hdev)
{
#if IS_ENABLED(CONFIG_BT_AOSPEXT)
hdev->aosp_capable = true;
#endif
}
int hci_dev_open(__u16 dev);
int hci_dev_close(__u16 dev);
int hci_dev_do_close(struct hci_dev *hdev);

7
net/bluetooth/Kconfig
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@ -99,6 +99,13 @@ config BT_MSFTEXT
This options enables support for the Microsoft defined HCI
vendor extensions.
config BT_AOSPEXT
bool "Enable Android Open Source Project extensions"
depends on BT
help
This options enables support for the Android Open Source
Project defined HCI vendor extensions.
config BT_DEBUGFS
bool "Export Bluetooth internals in debugfs"
depends on BT && DEBUG_FS

1
net/bluetooth/Makefile
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@ -20,5 +20,6 @@ bluetooth-$(CONFIG_BT_BREDR) += sco.o
bluetooth-$(CONFIG_BT_HS) += a2mp.o amp.o
bluetooth-$(CONFIG_BT_LEDS) += leds.o
bluetooth-$(CONFIG_BT_MSFTEXT) += msft.o
bluetooth-$(CONFIG_BT_AOSPEXT) += aosp.o
bluetooth-$(CONFIG_BT_DEBUGFS) += hci_debugfs.o
bluetooth-$(CONFIG_BT_SELFTEST) += selftest.o

35
net/bluetooth/aosp.c Normal file
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@ -0,0 +1,35 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2021 Intel Corporation
*/
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "aosp.h"
void aosp_do_open(struct hci_dev *hdev)
{
struct sk_buff *skb;
if (!hdev->aosp_capable)
return;
bt_dev_dbg(hdev, "Initialize AOSP extension");
/* LE Get Vendor Capabilities Command */
skb = __hci_cmd_sync(hdev, hci_opcode_pack(0x3f, 0x153), 0, NULL,
HCI_CMD_TIMEOUT);
if (IS_ERR(skb))
return;
kfree_skb(skb);
}
void aosp_do_close(struct hci_dev *hdev)
{
if (!hdev->aosp_capable)
return;
bt_dev_dbg(hdev, "Cleanup of AOSP extension");
}

16
net/bluetooth/aosp.h Normal file
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@ -0,0 +1,16 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2021 Intel Corporation
*/
#if IS_ENABLED(CONFIG_BT_AOSPEXT)
void aosp_do_open(struct hci_dev *hdev);
void aosp_do_close(struct hci_dev *hdev);
#else
static inline void aosp_do_open(struct hci_dev *hdev) {}
static inline void aosp_do_close(struct hci_dev *hdev) {}
#endif

3
net/bluetooth/hci_core.c
View File

@ -44,6 +44,7 @@
#include "smp.h"
#include "leds.h"
#include "msft.h"
#include "aosp.h"
static void hci_rx_work(struct work_struct *work);
static void hci_cmd_work(struct work_struct *work);
@ -1586,6 +1587,7 @@ setup_failed:
ret = hdev->set_diag(hdev, true);
msft_do_open(hdev);
aosp_do_open(hdev);
clear_bit(HCI_INIT, &hdev->flags);
@ -1782,6 +1784,7 @@ int hci_dev_do_close(struct hci_dev *hdev)
hci_sock_dev_event(hdev, HCI_DEV_DOWN);
aosp_do_close(hdev);
msft_do_close(hdev);
if (hdev->flush)