From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
This adds a debugfs entries to set msft_opcode and aosp_capable enabling
vhci to emulate controllers with MSFT/AOSP extension support.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
---
v2: Fix typos: s/extention/extension/g
v3: Remove checks for HCI_SETUP, merge changes to introduce MSFT/AOSP support
at the same time.
drivers/bluetooth/hci_vhci.c | 92 ++++++++++++++++++++++++++++++++++++
1 file changed, 92 insertions(+)
diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
index 56c6b22be10b..dc05729104a1 100644
--- a/drivers/bluetooth/hci_vhci.c
+++ b/drivers/bluetooth/hci_vhci.c
@@ -42,6 +42,8 @@ struct vhci_data {
bool suspended;
bool wakeup;
+ __u16 msft_opcode;
+ bool aosp_capable;
};
static int vhci_open_dev(struct hci_dev *hdev)
@@ -194,6 +196,82 @@ static const struct file_operations force_wakeup_fops = {
.llseek = default_llseek,
};
+static int msft_opcode_set(void *data, u64 val)
+{
+ struct vhci_data *vhci = data;
+
+ if (val > 0xffff || (val & 0xffff >> 10) != 0x3f)
+ return -EINVAL;
+
+ vhci->msft_opcode = val;
+
+ return 0;
+}
+
+static int msft_opcode_get(void *data, u64 *val)
+{
+ struct vhci_data *vhci = data;
+
+ *val = vhci->msft_opcode;
+
+ return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(msft_opcode_fops, msft_opcode_get, msft_opcode_set,
+ "%llu\n");
+
+static ssize_t aosp_capable_read(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct vhci_data *vhci = file->private_data;
+ char buf[3];
+
+ buf[0] = vhci->aosp_capable ? 'Y' : 'N';
+ buf[1] = '\n';
+ buf[2] = '\0';
+ return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
+}
+
+static ssize_t aosp_capable_write(struct file *file,
+ const char __user *user_buf, size_t count,
+ loff_t *ppos)
+{
+ struct vhci_data *vhci = file->private_data;
+ bool enable;
+ int err;
+
+ err = kstrtobool_from_user(user_buf, count, &enable);
+ if (err)
+ return err;
+
+ if (vhci->aosp_capable == enable)
+ return -EALREADY;
+
+ vhci->aosp_capable = enable;
+
+ return count;
+}
+
+static const struct file_operations aosp_capable_fops = {
+ .open = simple_open,
+ .read = aosp_capable_read,
+ .write = aosp_capable_write,
+ .llseek = default_llseek,
+};
+
+static int vhci_setup(struct hci_dev *hdev)
+{
+ struct vhci_data *vhci = hci_get_drvdata(hdev);
+
+ if (vhci->msft_opcode)
+ hci_set_msft_opcode(hdev, vhci->msft_opcode);
+
+ if (vhci->aosp_capable)
+ hci_set_aosp_capable(hdev);
+
+ return 0;
+}
+
static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
{
struct hci_dev *hdev;
@@ -237,6 +315,12 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
hdev->get_codec_config_data = vhci_get_codec_config_data;
hdev->wakeup = vhci_wakeup;
+ /* Enable custom setup if CONFIG_BT_MSFTEXT or CONFIG_BT_AOSPEXT is
+ * selected.
+ */
+ hdev->setup = vhci_setup;
+ set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
+
/* bit 6 is for external configuration */
if (opcode & 0x40)
set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks);
@@ -259,6 +343,14 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
debugfs_create_file("force_wakeup", 0644, hdev->debugfs, data,
&force_wakeup_fops);
+ if (IS_ENABLED(CONFIG_BT_MSFTEXT))
+ debugfs_create_file("msft_opcode", 0644, hdev->debugfs, data,
+ &msft_opcode_fops);
+
+ if (IS_ENABLED(CONFIG_BT_AOSPEXT))
+ debugfs_create_file("aosp_capable", 0644, hdev->debugfs, data,
+ &aosp_capable_fops);
+
hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;
skb_put_u8(skb, 0xff);
--
2.31.1
