diff options
Diffstat (limited to 'include/uapi/linux/tty_flags.h')
| -rw-r--r-- | include/uapi/linux/tty_flags.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/uapi/linux/tty_flags.h b/include/uapi/linux/tty_flags.h index eefcb48..7b516f7 100644 --- a/include/uapi/linux/tty_flags.h +++ b/include/uapi/linux/tty_flags.h @@ -6,6 +6,8 @@ * shared by the tty_port flags structures. * * Define ASYNCB_* for convenient use with {test,set,clear}_bit. + * + * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable */ #define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes * on the callout port */ @@ -26,7 +28,8 @@ #define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety * checks. Note: can be dangerous! */ #define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */ -#define ASYNCB_LAST_USER 15 +#define ASYNCB_MAGIC_MULTIPLIER 16 /* Use special CLK or divisor */ +#define ASYNCB_LAST_USER 16 /* Internal flags used only by kernel */ #define ASYNCB_INITIALIZED 31 /* Serial port was initialized */ @@ -57,6 +60,7 @@ #define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY) #define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART) #define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE) +#define ASYNC_MAGIC_MULTIPLIER (1U << ASYNCB_MAGIC_MULTIPLIER) #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1) #define ASYNC_USR_MASK (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \ |
