Commit 60edfad4 authored by Luiz Augusto von Dentz's avatar Luiz Augusto von Dentz Committed by Marcel Holtmann
Browse files

Bluetooth: hci_vhci: Add force_prevent_wake entry 



This adds force_prevent_wake which can be used to force a certain state
while interacting with force_suspend.

Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 59c218ca

drivers/bluetooth/hci_vhci.c

+49 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ struct vhci_data { 
	struct delayed_work open_timeout;



	bool suspended;

	bool prevent_wake;

};



static int vhci_open_dev(struct hci_dev *hdev)
@@ -94,6 +95,13 @@ static int vhci_get_codec_config_data(struct hci_dev *hdev, __u8 type, 
	return 0;

}



static bool vhci_prevent_wake(struct hci_dev *hdev)

{

	struct vhci_data *data = hci_get_drvdata(hdev);



	return data->prevent_wake;

}



static ssize_t force_suspend_read(struct file *file, char __user *user_buf,

				  size_t count, loff_t *ppos)

{
@@ -141,6 +149,43 @@ static const struct file_operations force_suspend_fops = { 
	.llseek		= default_llseek,

};



static ssize_t force_prevent_wake_read(struct file *file, char __user *user_buf,

				       size_t count, loff_t *ppos)

{

	struct vhci_data *data = file->private_data;

	char buf[3];



	buf[0] = data->prevent_wake ? 'Y' : 'N';

	buf[1] = '\n';

	buf[2] = '\0';

	return simple_read_from_buffer(user_buf, count, ppos, buf, 2);

}



static ssize_t force_prevent_wake_write(struct file *file,

					const char __user *user_buf,

					size_t count, loff_t *ppos)

{

	struct vhci_data *data = file->private_data;

	bool enable;

	int err;



	err = kstrtobool_from_user(user_buf, count, &enable);

	if (err)

		return err;



	if (data->prevent_wake == enable)

		return -EALREADY;



	return count;

}



static const struct file_operations force_prevent_wake_fops = {

	.open		= simple_open,

	.read		= force_prevent_wake_read,

	.write		= force_prevent_wake_write,

	.llseek		= default_llseek,

};



static int __vhci_create_device(struct vhci_data *data, __u8 opcode)

{

	struct hci_dev *hdev;
@@ -182,6 +227,7 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode) 
	hdev->send  = vhci_send_frame;

	hdev->get_data_path_id = vhci_get_data_path_id;

	hdev->get_codec_config_data = vhci_get_codec_config_data;

	hdev->prevent_wake = vhci_prevent_wake;



	/* bit 6 is for external configuration */

	if (opcode & 0x40)
@@ -202,6 +248,9 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode) 
	debugfs_create_file("force_suspend", 0644, hdev->debugfs, data,

			    &force_suspend_fops);



	debugfs_create_file("force_prevent_wake", 0644, hdev->debugfs, data,

			    &force_prevent_wake_fops);



	hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;



	skb_put_u8(skb, 0xff);