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path: root/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c
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Diffstat (limited to 'src/superio/smsc/lpc47n227/lpc47n227_early_serial.c')
-rw-r--r--src/superio/smsc/lpc47n227/lpc47n227_early_serial.c39
1 files changed, 9 insertions, 30 deletions
diff --git a/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c b/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c
index 318f0f3541..32bd3e3680 100644
--- a/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c
+++ b/src/superio/smsc/lpc47n227/lpc47n227_early_serial.c
@@ -23,25 +23,15 @@
#include <arch/romcc_io.h>
#include "lpc47n227.h"
-/**
- * Enable access to the LPC47N227's configuration registers.
- *
- * @param dev High 8 bits = Super I/O port.
- */
-static inline void pnp_enter_conf_state(device_t dev)
+static void pnp_enter_conf_state(device_t dev)
{
- unsigned port = dev >> 8;
+ u16 port = dev >> 8;
outb(0x55, port);
}
-/**
- * Disable access to the LPC47N227's configuration registers.
- *
- * @param dev High 8 bits = Super I/O port.
- */
static void pnp_exit_conf_state(device_t dev)
{
- unsigned port = dev >> 8;
+ u16 port = dev >> 8;
outb(0xaa, port);
}
@@ -51,24 +41,21 @@ static void pnp_exit_conf_state(device_t dev)
* @param dev High 8 bits = Super I/O port, low 8 bits = logical device number.
* @param iobase Base I/O port for the logical device.
*/
-void lpc47n227_pnp_set_iobase(device_t dev, unsigned iobase)
+void lpc47n227_pnp_set_iobase(device_t dev, u16 iobase)
{
- // LPC47N227 requires base ports to be a multiple of 4
+ /* LPC47N227 requires base ports to be a multiple of 4. */
ASSERT(!(iobase & 0x3));
switch (dev & 0xFF) {
case LPC47N227_PP:
pnp_write_config(dev, 0x23, (iobase >> 2) & 0xff);
break;
-
case LPC47N227_SP1:
pnp_write_config(dev, 0x24, (iobase >> 2) & 0xff);
break;
-
case LPC47N227_SP2:
pnp_write_config(dev, 0x25, (iobase >> 2) & 0xff);
break;
-
default:
break;
}
@@ -88,37 +75,29 @@ void lpc47n227_pnp_set_iobase(device_t dev, unsigned iobase)
*/
void lpc47n227_pnp_set_enable(device_t dev, int enable)
{
- uint8_t power_register = 0;
- uint8_t power_mask = 0;
- uint8_t current_power;
- uint8_t new_power;
+ u8 power_register = 0, power_mask = 0, current_power, new_power;
switch (dev & 0xFF) {
case LPC47N227_PP:
power_register = 0x01;
power_mask = 0x04;
break;
-
case LPC47N227_SP1:
power_register = 0x02;
power_mask = 0x08;
break;
-
case LPC47N227_SP2:
power_register = 0x02;
power_mask = 0x80;
break;
-
default:
return;
}
current_power = pnp_read_config(dev, power_register);
- new_power = current_power & ~power_mask; // disable by default
-
+ new_power = current_power & ~power_mask; /* Disable by default. */
if (enable)
- new_power |= power_mask; // Enable
-
+ new_power |= power_mask; /* Enable. */
pnp_write_config(dev, power_register, new_power);
}
@@ -129,7 +108,7 @@ void lpc47n227_pnp_set_enable(device_t dev, int enable)
* @param dev High 8 bits = Super I/O port, low 8 bits = logical device number.
* @param iobase Processor I/O port address to assign to this serial device.
*/
-static void lpc47n227_enable_serial(device_t dev, unsigned iobase)
+static void lpc47n227_enable_serial(device_t dev, u16 iobase)
{
/*
* NOTE: Cannot use pnp_set_XXX() here because they assume chip