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| author | Graf Yang <graf.yang@analog.com> | 2008-02-29 11:31:08 +0800 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-02-29 11:31:08 +0800 |
| commit | 7d01b475ab17018756c8df27c2ee3c220fab05f8 (patch) | |
| tree | f24b3804a69a899e51175c817ec3bef827dde951 /drivers/serial/bfin_5xx.c | |
| parent | 0c11700dbfaf0aa5336bd667373ee09db245f3ea (diff) | |
| download | talos-obmc-linux-7d01b475ab17018756c8df27c2ee3c220fab05f8.tar.gz talos-obmc-linux-7d01b475ab17018756c8df27c2ee3c220fab05f8.zip | |
Blackfin Serial Driver: Enable IR function when user application (irattach /dev/ttyBFx -s) call TIOCSETD ioctl with line discipline N_IRDA
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'drivers/serial/bfin_5xx.c')
| -rw-r--r-- | drivers/serial/bfin_5xx.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c index 46bb47f37b9a..4e0b8cd4d4e0 100644 --- a/drivers/serial/bfin_5xx.c +++ b/drivers/serial/bfin_5xx.c @@ -900,6 +900,31 @@ bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser) return 0; } +/* + * Enable the IrDA function if tty->ldisc.num is N_IRDA. + * In other cases, disable IrDA function. + */ +static void bfin_set_ldisc(struct tty_struct *tty) +{ + int line = tty->index; + unsigned short val; + + if (line >= tty->driver->num) + return; + + switch (tty->ldisc.num) { + case N_IRDA: + val = UART_GET_GCTL(&bfin_serial_ports[line]); + val |= (IREN | RPOLC); + UART_PUT_GCTL(&bfin_serial_ports[line], val); + break; + default: + val = UART_GET_GCTL(&bfin_serial_ports[line]); + val &= ~(IREN | RPOLC); + UART_PUT_GCTL(&bfin_serial_ports[line], val); + } +} + static struct uart_ops bfin_serial_pops = { .tx_empty = bfin_serial_tx_empty, .set_mctrl = bfin_serial_set_mctrl, @@ -1261,6 +1286,7 @@ static int __init bfin_serial_init(void) ret = uart_register_driver(&bfin_serial_reg); if (ret == 0) { + bfin_serial_reg.tty_driver->set_ldisc = bfin_set_ldisc; ret = platform_driver_register(&bfin_serial_driver); if (ret) { pr_debug("uart register failed\n"); |
