diff options
| author | Matt Macy <mmacy@FreeBSD.org> | 2018-07-22 23:32:21 +0000 |
|---|---|---|
| committer | Matt Macy <mmacy@FreeBSD.org> | 2018-07-22 23:32:21 +0000 |
| commit | f30f0f2b4792e63ffa8d07e2e791122bfb20fdbf (patch) | |
| tree | e4a065e953c3da8f759d1a0314c0e7bdf72c3fac /sys/dev/uart | |
| parent | 16bb9a49ad6ce45b6f15cc03dff991231c02da49 (diff) | |
Notes
Diffstat (limited to 'sys/dev/uart')
| -rw-r--r-- | sys/dev/uart/uart.h | 1 | ||||
| -rw-r--r-- | sys/dev/uart/uart_dev_ns8250.c | 1 | ||||
| -rw-r--r-- | sys/dev/uart/uart_subr.c | 9 |
3 files changed, 11 insertions, 0 deletions
diff --git a/sys/dev/uart/uart.h b/sys/dev/uart/uart.h index 73109173bd48..4ef6af3d901b 100644 --- a/sys/dev/uart/uart.h +++ b/sys/dev/uart/uart.h @@ -44,6 +44,7 @@ struct uart_bas { u_int rclk; u_int regshft; u_int regiowidth; + u_int busy_detect; }; #define uart_regofs(bas, reg) ((reg) << (bas)->regshft) diff --git a/sys/dev/uart/uart_dev_ns8250.c b/sys/dev/uart/uart_dev_ns8250.c index 266530db060f..03792f8f6598 100644 --- a/sys/dev/uart/uart_dev_ns8250.c +++ b/sys/dev/uart/uart_dev_ns8250.c @@ -469,6 +469,7 @@ ns8250_bus_attach(struct uart_softc *sc) bas = &sc->sc_bas; + ns8250->busy_detect = bas->busy_detect; ns8250->mcr = uart_getreg(bas, REG_MCR); ns8250->fcr = FCR_ENABLE; #ifdef CPU_XBURST diff --git a/sys/dev/uart/uart_subr.c b/sys/dev/uart/uart_subr.c index dcdaf9f1929c..2dd10d9f4a2d 100644 --- a/sys/dev/uart/uart_subr.c +++ b/sys/dev/uart/uart_subr.c @@ -49,6 +49,7 @@ __FBSDID("$FreeBSD$"); #define UART_TAG_RS 7 #define UART_TAG_SB 8 #define UART_TAG_XO 9 +#define UART_TAG_BD 10 static struct uart_class *uart_classes[] = { &uart_ns8250_class, @@ -124,6 +125,10 @@ uart_parse_tag(const char **p) { int tag; + if ((*p)[0] == 'b' && (*p)[1] == 'd') { + tag = UART_TAG_BD; + goto out; + } if ((*p)[0] == 'b' && (*p)[1] == 'r') { tag = UART_TAG_BR; goto out; @@ -179,6 +184,7 @@ out: * separated by commas. Each attribute is a tag-value pair with the tag and * value separated by a colon. Supported tags are: * + * bd = Busy Detect * br = Baudrate * ch = Channel * db = Data bits @@ -242,6 +248,9 @@ uart_getenv(int devtype, struct uart_devinfo *di, struct uart_class *class) spec = cp; for (;;) { switch (uart_parse_tag(&spec)) { + case UART_TAG_BD: + di->bas.busy_detect = uart_parse_long(&spec); + break; case UART_TAG_BR: di->baudrate = uart_parse_long(&spec); break; |