diff options
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 3bd7d55eebce..452c9cc9d717 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -112,6 +112,7 @@ struct uart_icount { }; typedef unsigned int __bitwise__ upf_t; +typedef unsigned int __bitwise__ upstat_t; struct uart_port { spinlock_t lock; /* port lock */ @@ -190,6 +191,12 @@ struct uart_port { #define UPF_CHANGE_MASK ((__force upf_t) (0x17fff)) #define UPF_USR_MASK ((__force upf_t) (UPF_SPD_MASK|UPF_LOW_LATENCY)) + /* status must be updated while holding port lock */ + upstat_t status; + +#define UPSTAT_CTS_ENABLE ((__force upstat_t) (1 << 0)) +#define UPSTAT_DCD_ENABLE ((__force upstat_t) (1 << 1)) + unsigned int mctrl; /* current modem ctrl settings */ unsigned int timeout; /* character-based timeout */ unsigned int type; /* port type */ @@ -355,6 +362,11 @@ static inline int uart_tx_stopped(struct uart_port *port) return 0; } +static inline bool uart_cts_enabled(struct uart_port *uport) +{ + return uport->status & UPSTAT_CTS_ENABLE; +} + /* * The following are helper functions for the low level drivers. */ |
