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ite/common: Introduce common watchdog and 3.3V VSB helpers 

Introduce the watchog and 3.3 VSB helper functions.
The IT8712F can be migrated to use those too. To be used
with IT8728F.

Change-Id: If21e99b6069c7222f0bc8eb7c7121fe119b8dfe1
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/5728
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Rudolf Marek 2014-05-13 15:57:47 +02:00 committed by Patrick Georgi
parent 4405b06521
commit a7d14a170e
2 changed files with 42 additions and 0 deletions
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40
src/superio/ite/common/early_serial.c
View File

@ -29,6 +29,8 @@
#define ITE_CONFIG_REG_LDN 0x07 /* Logical Device Number. */
#define ITE_CONFIG_REG_CLOCKSEL 0x23 /* Clock Selection. */
#define ITE_CONFIG_REG_SWSUSP 0x24 /* Software Suspend, Flash I/F. */
#define ITE_CONFIG_REG_MFC 0x2a /* multi function pin */
#define ITE_CONFIG_REG_WATCHDOG 0x72 /* watchdog config */
/* Helper procedure */
static void ite_sio_write(device_t dev, u8 reg, u8 value)
@ -84,3 +86,41 @@ void ite_enable_serial(device_t dev, u16 iobase)
pnp_set_enable(dev, 1);
pnp_exit_conf_state(dev);
}
/*
*
* LDN 7, reg 0x2a - needed for S3, or memory power will be cut off
* this was documented only in IT8712F_V0.9.2!
*
* Enable 3VSBSW#. (For System Suspend-to-RAM)
* 0: 3VSBSW# will be always inactive.
* 1: 3VSBSW# enabled. It will be (NOT SUSB#) NAND SUSC#.
*
* in romstage.c
* #define GPIO_DEV PNP_DEV(0x2e, ITE_GPIO)
* and pass: GPIO_DEV
*/
void ite_enable_3vsbsw(device_t dev)
{
u8 tmp;
pnp_enter_conf_state(dev);
pnp_set_logical_device(dev);
tmp = pnp_read_config(dev, ITE_CONFIG_REG_MFC);
tmp |= 0x80;
pnp_write_config(dev, ITE_CONFIG_REG_MFC, tmp);
pnp_exit_conf_state(dev);
}
/*
* in romstage.c
* #define GPIO_DEV PNP_DEV(0x2e, ITE_GPIO)
* and pass: GPIO_DEV
*/
void ite_kill_watchdog(device_t dev)
{
pnp_enter_conf_state(dev);
ite_sio_write(dev, ITE_CONFIG_REG_WATCHDOG, 0x00);
pnp_exit_conf_state(dev);
}

2
src/superio/ite/common/ite.h
View File

@ -32,5 +32,7 @@ void ite_enable_serial(device_t dev, u16 iobase);
/* Some boards need to init wdt+gpio's very early */
void ite_reg_write(device_t dev, u8 reg, u8 value);
void ite_enable_3vsbsw(device_t dev);
void ite_kill_watchdog(device_t dev);
#endif /* SUPERIO_ITE_COMMON_ROMSTAGE_H */