diff options
Diffstat (limited to 'src/superio/smsc/lpc47n217/lpc47n217_early_serial.c')
| -rw-r--r-- | src/superio/smsc/lpc47n217/lpc47n217_early_serial.c | 70 |
1 files changed, 27 insertions, 43 deletions
diff --git a/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c b/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c index 2b0c634bcf..34f2c4512b 100644 --- a/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c +++ b/src/superio/smsc/lpc47n217/lpc47n217_early_serial.c @@ -24,38 +24,25 @@ #include <assert.h> #include "lpc47n217.h" -/* - * Function: pnp_enter_conf_state - * Parameters: dev - high 8 bits = Super I/O port - * Return Value: None - * Description: Enable access to the LPC47N217's configuration registers. - */ +/** Enable access to the LPC47N217's configuration registers. */ static inline void pnp_enter_conf_state(device_t dev) { unsigned port = dev>>8; outb(0x55, port); } -/* - * Function: pnp_exit_conf_state - * Parameters: dev - high 8 bits = Super I/O port - * Return Value: None - * Description: Disable access to the LPC47N217's configuration registers. - */ +/** Disable access to the LPC47N217's configuration registers. */ static void pnp_exit_conf_state(device_t dev) { unsigned port = dev>>8; outb(0xaa, port); } -/* - * Function: lpc47n217_pnp_set_iobase - * Parameters: dev - high 8 bits = Super I/O port, - * low 8 bits = logical device number (per lpc47n217.h) - * iobase - base I/O port for the logical device - * Return Value:None - * Description: Program the base I/O port for the specified logical device. +/** + * Program the base I/O port for the specified logical device. * + * @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 lpc47n217_pnp_set_iobase(device_t dev, unsigned iobase) { @@ -80,19 +67,17 @@ void lpc47n217_pnp_set_iobase(device_t dev, unsigned iobase) } } -/* - * Function: lpc47n217_pnp_set_enable - * Parameters: dev - high 8 bits = Super I/O port, - * low 8 bits = logical device number (per lpc47n217.h) - * enable - 0 to disable, anythig else to enable - * Return Value:None - * Description: Enable or disable the specified logical device. - * Technically, a full disable requires setting the device's base - * I/O port below 0x100. We don't do that here, because we don't - * have access to a data structure that specifies what the 'real' - * base port is (when asked to enable the device). Also the function - * is used only to disable the device while its true base port is - * programmed (see lpc47n217_enable_serial() below). +/** + * Enable or disable the specified logical device. + * + * Technically, a full disable requires setting the device's base I/O port + * below 0x100. We don't do that here, because we don't have access to a data + * structure that specifies what the 'real' base port is (when asked to enable + * the device). Also the function is used only to disable the device while its + * true base port is programmed (see lpc47n217_enable_serial() below). + * + * @param dev High 8 bits = Super I/O port, low 8 bits = logical device number. + * @param enable 0 to disable, anythig else to enable. */ void lpc47n217_pnp_set_enable(device_t dev, int enable) { @@ -130,20 +115,19 @@ void lpc47n217_pnp_set_enable(device_t dev, int enable) pnp_write_config(dev, power_register, new_power); } -/* - * Function: lpc47n217_enable_serial - * Parameters: dev - high 8 bits = Super I/O port, - * low 8 bits = logical device number (per lpc47n217.h) - * iobase - processor I/O port address to assign to this serial device - * Return Value:bool - * Description: Configure the base I/O port of the specified serial device - * and enable the serial device. +/** + * Configure the base I/O port of the specified serial device and enable the + * serial device. + * + * @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 lpc47n217_enable_serial(device_t dev, unsigned iobase) { - /* NOTE: Cannot use pnp_set_XXX() here because they assume chip - * support for logical devices, which the LPC47N217 doesn't have*/ - + /* + * NOTE: Cannot use pnp_set_XXX() here because they assume chip + * support for logical devices, which the LPC47N217 doesn't have. + */ pnp_enter_conf_state(dev); lpc47n217_pnp_set_enable(dev, 0); lpc47n217_pnp_set_iobase(dev, iobase); |