Hi Luiz,
> This adds force_suspend which can be used to force the controller into
> suspend/resume state.
>
> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
> ---
> drivers/bluetooth/hci_vhci.c | 49 ++++++++++++++++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
>
> diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
> index cc3679f3491d..52f9106faeae 100644
> --- a/drivers/bluetooth/hci_vhci.c
> +++ b/drivers/bluetooth/hci_vhci.c
> @@ -21,6 +21,7 @@
>
> #include <linux/skbuff.h>
> #include <linux/miscdevice.h>
> +#include <linux/debugfs.h>
>
> #include <net/bluetooth/bluetooth.h>
> #include <net/bluetooth/hci_core.h>
> @@ -91,6 +92,51 @@ static int vhci_get_codec_config_data(struct hci_dev *hdev, __u8 type,
> return 0;
> }
>
> +static ssize_t force_suspend_read(struct file *file, char __user *user_buf,
> + size_t count, loff_t *ppos)
> +{
> + struct hci_dev *hdev = file->private_data;
> + char buf[3];
> +
> + buf[0] = hdev->suspended ? 'Y' : 'N';
> + buf[1] = '\n';
> + buf[2] = '\0';
> + return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
> +}
> +
> +static ssize_t force_suspend_write(struct file *file,
> + const char __user *user_buf,
> + size_t count, loff_t *ppos)
> +{
> + struct hci_dev *hdev = file->private_data;
> + bool enable;
> + int err;
> +
> + err = kstrtobool_from_user(user_buf, count, &enable);
> + if (err)
> + return err;
> +
> + if (hdev->suspended == enable)
> + return -EALREADY;
I think that we have to have bool suspended in vhci_data struct here. It needs to be local to the driver.
> +
> + if (enable)
> + err = hci_suspend_dev(hdev);
> + else
> + err = hci_resume_dev(hdev);
> +
> + if (err)
> + return err;
> +
> + return count;
> +}
> +
> +static const struct file_operations force_suspend_fops = {
> + .open = simple_open,
> + .read = force_suspend_read,
> + .write = force_suspend_write,
> + .llseek = default_llseek,
> +};
> +
> static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
> {
> struct hci_dev *hdev;
> @@ -149,6 +195,9 @@ static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
> return -EBUSY;
> }
>
> + debugfs_create_file("force_suspend", 0644, hdev->debugfs, hdev,
> + &force_suspend_fops);
> +
> hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;
Regards
Marcel
