summaryrefslogtreecommitdiff
path: root/include/linux/serial_8250.h
diff options
context:
space:
mode:
authorPhilippe Langlais <philippe.langlais@stericsson.com>2010-07-29 19:13:57 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2010-08-11 00:47:46 +0400
commit235dae5d094c415fcf0fc79fa637f1901bc8afe2 (patch)
tree947ea700996f68c0a601cb2a0204d475ca131f32 /include/linux/serial_8250.h
parentbf9c1fca9ae9a79ed209e7ab2c10b3862f3f6f72 (diff)
downloadlinux-235dae5d094c415fcf0fc79fa637f1901bc8afe2.tar.xz
U6715 16550A serial driver support
UART Features extract from STEricsson U6715 data-sheet (arm926 SoC for mobile phone): * Fully compatible with industry standard 16C550 and 16C450 from various manufacturers * RX and TX 64 byte FIFO reduces CPU interrupts * Full double buffering * Modem control signals include CTS, RTS, (and DSR, DTR on UART1 only) * Automatic baud rate selection * Manual or automatic RTS/CTS smart hardware flow control * Programmable serial characteristics: – Baud rate generation (50 to 3.25M baud) – 5, 6, 7 or 8-bit characters – Even, odd or no-parity bit generation and detection – 1, 1.5 or 2 stop bit generation * Independent control of transmit, receive, line status, data set interrupts and FIFOs * Full status-reporting capabilities * Separate DMA signaling for RX and TX * Timed interrupt to spread receive interrupt on known duration * DMA time-out interrupt to allow detection of end of reception * Carkit pulse coding and decoding compliant with USB carkit control interface [40] In 16550A auto-configuration, if the fifo size is 64 then it's an U6 16550A port Add set_termios hook & export serial8250_do_set_termios to change uart clock following baudrate Signed-off-by: Philippe Langlais <philippe.langlais@stericsson.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/serial_8250.h')
-rw-r--r--include/linux/serial_8250.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index fb46aba11fb5..7638deaaba65 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -32,6 +32,9 @@ struct plat_serial8250_port {
unsigned int type; /* If UPF_FIXED_TYPE */
unsigned int (*serial_in)(struct uart_port *, int);
void (*serial_out)(struct uart_port *, int, int);
+ void (*set_termios)(struct uart_port *,
+ struct ktermios *new,
+ struct ktermios *old);
};
/*
@@ -71,5 +74,7 @@ extern int early_serial_setup(struct uart_port *port);
extern int serial8250_find_port(struct uart_port *p);
extern int serial8250_find_port_for_earlycon(void);
extern int setup_early_serial8250_console(char *cmdline);
+extern void serial8250_do_set_termios(struct uart_port *port,
+ struct ktermios *termios, struct ktermios *old);
#endif