diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-04-17 16:34:13 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-11-04 11:25:54 +0000 |
| commit | 2cbacafd7af0f1cc7a433668c662a91ba6aabc1b (patch) | |
| tree | be2e5735b395cba0bfcaf89c312a3fbdce7b05c3 /include/linux/serial_core.h | |
| parent | dec94e70e12c39440e63159e0050d46795dfcf09 (diff) | |
SERIAL: core: add hardware assisted s/w flow control support
Ports which are capable of handling s/w flow control in hardware to
know when the s/w flow control termios settings are changed. Add a
flag to allow the low level serial drivers to indicate that they
support this, and these changes should be propagated to them.
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 3c430228d232..00051388de3c 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -163,6 +163,8 @@ struct uart_port { #define UPF_BUGGY_UART ((__force upf_t) (1 << 14)) #define UPF_NO_TXEN_TEST ((__force upf_t) (1 << 15)) #define UPF_MAGIC_MULTIPLIER ((__force upf_t) (1 << 16)) +/* Port has hardware-assisted s/w flow control */ +#define UPF_SOFT_FLOW ((__force upf_t) (1 << 22)) #define UPF_CONS_FLOW ((__force upf_t) (1 << 23)) #define UPF_SHARE_IRQ ((__force upf_t) (1 << 24)) #define UPF_EXAR_EFR ((__force upf_t) (1 << 25)) |