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>
diff --git a/src/superio/ite/it8720f/superio.c b/src/superio/ite/it8720f/superio.c
index 912da38..be44e39 100644
--- a/src/superio/ite/it8720f/superio.c
+++ b/src/superio/ite/it8720f/superio.c
@@ -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 @@
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);