diff options
Diffstat (limited to 'src/superio')
| -rw-r--r-- | src/superio/ite/it8712f/it8712f_early_serial.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/src/superio/ite/it8712f/it8712f_early_serial.c b/src/superio/ite/it8712f/it8712f_early_serial.c index 7839732787..dd84245dc4 100644 --- a/src/superio/ite/it8712f/it8712f_early_serial.c +++ b/src/superio/ite/it8712f/it8712f_early_serial.c @@ -45,10 +45,10 @@ static void it8712f_sio_write(uint8_t ldn, uint8_t index, uint8_t value) outb(value, SIO_DATA); } -/* Enable the peripheral devices on the IT8712F Super I/O chip. */ -static void it8712f_enable_serial(device_t dev, unsigned iobase) + +static void it8712f_enter_conf(void) { - /* (1) Enter the configuration state (MB PnP mode). */ + /* Enter the configuration state (MB PnP mode). */ /* Perform MB PnP setup to put the SIO chip at 0x2e. */ /* Base address 0x2e: 0x87 0x01 0x55 0x55. */ @@ -57,6 +57,32 @@ static void it8712f_enable_serial(device_t dev, unsigned iobase) outb(0x01, IT8712F_CONFIGURATION_PORT); outb(0x55, IT8712F_CONFIGURATION_PORT); outb(0x55, IT8712F_CONFIGURATION_PORT); +} + +static void it8712f_exit_conf(void) +{ + /* Exit the configuration state (MB PnP mode). */ + it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CC, 0x02); +} + + +static void it8712f_24mhz_clkin(void) +{ + it8712f_enter_conf(); + + /* Select 24MHz CLKIN (48MHZ default)*/ + it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CLOCKSEL, 0x1); + + it8712f_exit_conf(); + +} + +/* Enable the peripheral devices on the IT8712F Super I/O chip. */ +static void it8712f_enable_serial(device_t dev, unsigned iobase) +{ + + /* (1) Enter the configuration state (MB PnP mode). */ + it8712f_enter_conf(); /* (2) Modify the data of configuration registers. */ @@ -69,13 +95,9 @@ static void it8712f_enable_serial(device_t dev, unsigned iobase) it8712f_sio_write(IT8712F_SP1, 0x30, 0x1); /* Serial port 1 */ it8712f_sio_write(IT8712F_SP2, 0x30, 0x1); /* Serial port 2 */ - /* Select 24MHz CLKIN (set bit 0). */ - it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CLOCKSEL, 0x01); - /* Clear software suspend mode (clear bit 0). TODO: Needed? */ /* it8712f_sio_write(0x00, IT8712F_CONFIG_REG_SWSUSP, 0x00); */ /* (3) Exit the configuration state (MB PnP mode). */ - it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CC, 0x02); + it8712f_exit_conf(); } - |