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tty/serial/8250: Make omap hardware workarounds local to 8250.h 

This allows us to get rid of the ifdefs in 8250.c.

Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tony Lindgren 2012-10-03 15:31:58 -07:00 committed by Greg Kroah-Hartman
parent b15d5380e4
commit 54ec52b6dd
3 changed files with 39 additions and 15 deletions
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9
arch/arm/plat-omap/include/plat/serial.h
View File

@ -109,15 +109,6 @@
#define OMAP5UART4 OMAP4UART4
#define ZOOM_UART 95 /* Only on zoom2/3 */
/* This is only used by 8250.c for omap1510 */
#define is_omap_port(pt) ({int __ret = 0; \
if ((pt)->port.mapbase == OMAP1_UART1_BASE || \
(pt)->port.mapbase == OMAP1_UART2_BASE || \
(pt)->port.mapbase == OMAP1_UART3_BASE) \
__ret = 1; \
__ret; \
})
#ifndef __ASSEMBLER__
struct omap_board_data;

9
drivers/tty/serial/8250/8250.c
View File

@ -2349,16 +2349,14 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
serial_port_out(port, UART_EFR, efr);
}
#ifdef CONFIG_ARCH_OMAP1
/* Workaround to enable 115200 baud on OMAP1510 internal ports */
if (cpu_is_omap1510() && is_omap_port(up)) {
if (is_omap1510_8250(up)) {
if (baud == 115200) {
quot = 1;
serial_port_out(port, UART_OMAP_OSC_12M_SEL, 1);
} else
serial_port_out(port, UART_OMAP_OSC_12M_SEL, 0);
}
#endif
/*
* For NatSemi, switch to bank 2 not bank 1, to avoid resetting EXCR2,
@ -2439,10 +2437,9 @@ static unsigned int serial8250_port_size(struct uart_8250_port *pt)
{
if (pt->port.iotype == UPIO_AU)
return 0x1000;
#ifdef CONFIG_ARCH_OMAP1
if (is_omap_port(pt))
if (is_omap1_8250(pt))
return 0x16 << pt->port.regshift;
#endif
return 8 << pt->port.regshift;
}

36
drivers/tty/serial/8250/8250.h
View File

@ -106,3 +106,39 @@ static inline int serial8250_pnp_init(void) { return 0; }
static inline void serial8250_pnp_exit(void) { }
#endif
#ifdef CONFIG_ARCH_OMAP1
static inline int is_omap1_8250(struct uart_8250_port *pt)
{
int res;
switch (pt->port.mapbase) {
case OMAP1_UART1_BASE:
case OMAP1_UART2_BASE:
case OMAP1_UART3_BASE:
res = 1;
break;
default:
res = 0;
break;
}
return res;
}
static inline int is_omap1510_8250(struct uart_8250_port *pt)
{
if (!cpu_is_omap1510())
return 0;
return is_omap1_8250(pt);
}
#else
static inline int is_omap1_8250(struct uart_8250_port *pt)
{
return 0;
}
static inline int is_omap1510_8250(struct uart_8250_port *pt)
{
return 0;
}
#endif