[S] Change in coreboot[main]: it8728f: Support setting power state after power failure

[Vladimir Serbinenko (Code Review)]

Vladimir Serbinenko has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/82737?usp=email )

Change subject: it8728f: Support setting power state after power failure
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it8728f: Support setting power state after power failure

Tested on GA-H61M-S2PV

Change-Id: I3dcc4f032bc5f629fb916c4122beb8dc096bab20
Signed-off-by: Vladimir Serbinenko 
---
M src/superio/ite/it8728f/superio.c
1 file changed, 29 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/37/82737/1

diff --git a/src/superio/ite/it8728f/superio.c b/src/superio/ite/it8728f/superio.c
index 5e4c2fd..b5aed23 100644
--- a/src/superio/ite/it8728f/superio.c
+++ b/src/superio/ite/it8728f/superio.c
@@ -5,14 +5,21 @@
 #include <superio/conf_mode.h>
 #include <pc80/keyboard.h>
 #include <superio/ite/common/env_ctrl.h>
+#include <option.h>

#include "chip.h"
 #include "it8728f.h"

+#define MAINBOARD_POWER_OFF	0
+#define MAINBOARD_POWER_ON	1
+#define MAINBOARD_POWER_KEEP	2
+
 static void it8728f_init(struct device *dev)
 {
    const struct superio_ite_it8728f_config *conf = dev->chip_info;
    const struct resource *res;
+	uint8_t power_status;
+	uint8_t byte_f2, byte_f4;

if (!dev->enabled)
    	return;
@@ -24,6 +31,28 @@
    	if (!conf || !res)
    		break;
    	ite_ec_init(res->base, &conf->ec);
+
+		/* Set power state after power fail */
+		power_status = get_uint_option("power_on_after_fail",
+				CONFIG_MAINBOARD_POWER_FAILURE_STATE);
+		pnp_enter_conf_mode(dev);
+		pnp_set_logical_device(dev);
+		byte_f4 = pnp_read_config(dev, 0xf4);
+		byte_f2 = pnp_read_config(dev, 0xf2);
+		if (power_status == MAINBOARD_POWER_ON)
+			byte_f4 |= 0x20;
+		else if (power_status == MAINBOARD_POWER_KEEP) {
+			byte_f4 &= ~0x20;
+			byte_f2 |=  0x20;
+		} else {
+			byte_f4 &= ~0x20;
+			byte_f2 &= ~0x20;
+		}
+		pnp_write_config(dev, 0xf4, byte_f4);
+		pnp_write_config(dev, 0xf2, byte_f2);
+		pnp_exit_conf_mode(dev);
+		printk(BIOS_INFO, "set power %d after power fail\n", power_status);
+
    	break;
    case IT8728F_KBCK:
    	set_kbc_ps2_mode();