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superio/ite/it8720f: Implement power control 

Program the Super I/O to turn the machine on or restore its power state
when AC power is restored.

Based on code from src/superio/nuvoton/nct5572d/superio.c.

Change-Id: I1f3432f43b0784c3696bf1d7233b83d3a203af20
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-on: https://review.coreboot.org/25463
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Samuel Holland 2018-03-30 15:14:17 -05:00 committed by Patrick Georgi
parent 9d217bf79a
commit c622dc5e82
1 changed files with 24 additions and 0 deletions
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24
src/superio/ite/it8720f/superio.c
View File

@ -18,12 +18,35 @@
#include <device/device.h>
#include <device/pnp.h>
#include <pc80/keyboard.h>
#include <pc80/mc146818rtc.h>
#include <superio/ite/common/env_ctrl.h>
#include <superio/conf_mode.h>
#include <types.h>
#include "chip.h"
#include "it8720f.h"
#define MAINBOARD_POWER_OFF 0
#define MAINBOARD_POWER_ON 1
#define MAINBOARD_POWER_KEEP 2
static void power_control_init(struct device *dev)
{
int power_on = MAINBOARD_POWER_OFF;
u8 addr, value;
get_option(&power_on, "power_on_after_fail");
if (power_on == MAINBOARD_POWER_OFF)
return;
pnp_enter_conf_mode(dev);
pnp_set_logical_device(dev);
addr = power_on == MAINBOARD_POWER_KEEP ? 0xf2 : 0xf4;
value = pnp_read_config(dev, addr);
value |= BIT(5);
pnp_write_config(dev, addr, value);
pnp_exit_conf_mode(dev);
}
static void it8720f_init(struct device *dev)
{
const struct superio_ite_it8720f_config *conf;
@ -39,6 +62,7 @@ static void it8720f_init(struct device *dev)
if (!conf || !res)
break;
ite_ec_init(res->base, &conf->ec);
power_control_init(dev);
break;
case IT8720F_KBCK:
pc_keyboard_init(NO_AUX_DEVICE);