From 63c7d09cd52fe23ad2baee26bcc10a590944cfa4 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Mon, 12 Jul 2010 11:37:04 -0300 Subject: [PATCH] Bluetooth: Add HCIUARTSETFLAGS and HCIUARTGETFLAGS ioctls This patch introduces two new ioctls: HCIUARTSETFLAGS and HCIUARTGETFLAGS. The only flag available for now is HCI_UART_RAW_DEVICE which allows to initialize a UART device into RAW mode from userspace. This is particularly useful for experimenting with Bluetooth controllers that don't yet have proper support in BlueZ. Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann --- drivers/bluetooth/hci_ldisc.c | 12 ++++++++++++ drivers/bluetooth/hci_uart.h | 7 ++++++- fs/compat_ioctl.c | 2 ++ 3 files changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index e8beffe80b3..a57dbfccb3f 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -395,6 +395,9 @@ static int hci_uart_register_dev(struct hci_uart *hu) if (!reset) set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); + if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) + set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); + if (hci_register_dev(hdev) < 0) { BT_ERR("Can't register HCI device"); hci_free_dev(hdev); @@ -475,6 +478,15 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, return hu->hdev->id; return -EUNATCH; + case HCIUARTSETFLAGS: + if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) + return -EBUSY; + hu->hdev_flags = arg; + break; + + case HCIUARTGETFLAGS: + return hu->hdev_flags; + default: err = n_tty_ioctl_helper(tty, file, cmd, arg); break; diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h index 50113db06b9..9694d9d6090 100644 --- a/drivers/bluetooth/hci_uart.h +++ b/drivers/bluetooth/hci_uart.h @@ -31,6 +31,8 @@ #define HCIUARTSETPROTO _IOW('U', 200, int) #define HCIUARTGETPROTO _IOR('U', 201, int) #define HCIUARTGETDEVICE _IOR('U', 202, int) +#define HCIUARTSETFLAGS _IOW('U', 203, int) +#define HCIUARTGETFLAGS _IOR('U', 204, int) /* UART protocols */ #define HCI_UART_MAX_PROTO 5 @@ -41,6 +43,8 @@ #define HCI_UART_H4DS 3 #define HCI_UART_LL 4 +#define HCI_UART_RAW_DEVICE 0 + struct hci_uart; struct hci_uart_proto { @@ -57,6 +61,7 @@ struct hci_uart { struct tty_struct *tty; struct hci_dev *hdev; unsigned long flags; + unsigned long hdev_flags; struct hci_uart_proto *proto; void *priv; @@ -66,7 +71,7 @@ struct hci_uart { spinlock_t rx_lock; }; -/* HCI_UART flag bits */ +/* HCI_UART proto flag bits */ #define HCI_UART_PROTO_SET 0 /* TX states */ diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 547452de5ca..8ea5e337450 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -604,6 +604,8 @@ static int ioc_settimeout(unsigned int fd, unsigned int cmd, #define HCIUARTSETPROTO _IOW('U', 200, int) #define HCIUARTGETPROTO _IOR('U', 201, int) #define HCIUARTGETDEVICE _IOR('U', 202, int) +#define HCIUARTSETFLAGS _IOW('U', 203, int) +#define HCIUARTGETFLAGS _IOR('U', 204, int) #define BNEPCONNADD _IOW('B', 200, int) #define BNEPCONNDEL _IOW('B', 201, int) -- 2.20.1