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| author | Philippe Langlais <philippe.langlais@stericsson.com> | 2010-07-29 17:13:57 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 13:47:46 -0700 |
| commit | 235dae5d094c415fcf0fc79fa637f1901bc8afe2 (patch) | |
| tree | 947ea700996f68c0a601cb2a0204d475ca131f32 /include/linux/serial_8250.h | |
| parent | bf9c1fca9ae9a79ed209e7ab2c10b3862f3f6f72 (diff) | |
| download | linux-235dae5d094c415fcf0fc79fa637f1901bc8afe2.tar.gz linux-235dae5d094c415fcf0fc79fa637f1901bc8afe2.tar.bz2 linux-235dae5d094c415fcf0fc79fa637f1901bc8afe2.zip | |
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.h | 5 |
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 |