diff options
| author | Alan Cox <alan@linux.intel.com> | 2010-10-18 22:38:02 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 21:20:10 +0400 |
| commit | af7f3743567e3d5b40e2f9c21541b7f40b99c103 (patch) | |
| tree | d5a8ef131861af6620d3a7947db167f2e0ebe1bf /drivers/serial | |
| parent | 4e4e66029af090c98cb10fafd13e8dd5039037a9 (diff) | |
| download | linux-af7f3743567e3d5b40e2f9c21541b7f40b99c103.tar.xz | |
serial: abstraction for 8250 legacy ports
Not every platform that has generic legacy 8250 ports manages to have them
clocked the right way or without errata. Provide a generic interface to
allow platforms to override the default behaviour in a manner that dumps
the complexity in *their* code not the 8250 driver.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/8250.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 6994afb5571a..37f19a678c97 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -2672,6 +2672,16 @@ static struct uart_ops serial8250_pops = { static struct uart_8250_port serial8250_ports[UART_NR]; +static void (*serial8250_isa_config)(int port, struct uart_port *up, + unsigned short *capabilities); + +void serial8250_set_isa_configurator( + void (*v)(int port, struct uart_port *up, unsigned short *capabilities)) +{ + serial8250_isa_config = v; +} +EXPORT_SYMBOL(serial8250_set_isa_configurator); + static void __init serial8250_isa_init_ports(void) { struct uart_8250_port *up; @@ -2717,6 +2727,9 @@ static void __init serial8250_isa_init_ports(void) up->port.regshift = old_serial_port[i].iomem_reg_shift; set_io_from_upio(&up->port); up->port.irqflags |= irqflag; + if (serial8250_isa_config != NULL) + serial8250_isa_config(i, &up->port, &up->capabilities); + } } @@ -3178,6 +3191,10 @@ int serial8250_register_port(struct uart_port *port) if (port->pm) uart->port.pm = port->pm; + if (serial8250_isa_config != NULL) + serial8250_isa_config(0, &uart->port, + &uart->capabilities); + ret = uart_add_one_port(&serial8250_reg, &uart->port); if (ret == 0) ret = uart->port.line; |