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superio/ite/it8728f: hook up power_on_after_fail

Set the Super IO registers to power the system on if power_on_after_fail is set.

Change-Id: Ia06dbbbed32ba13c2d91efa6377986db8452b3f4
Signed-off-by: James Ye <jye836@gmail.com>
---
M src/superio/ite/it8728f/it8728f.h
M src/superio/ite/it8728f/superio.c
2 files changed, 37 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/84/34884/1

diff --git a/src/superio/ite/it8728f/it8728f.h b/src/superio/ite/it8728f/it8728f.h
index 19a04de..36fd94e 100644
--- a/src/superio/ite/it8728f/it8728f.h
+++ b/src/superio/ite/it8728f/it8728f.h
@@ -28,6 +28,10 @@
 #define IT8728F_GPIO 0x07 /* GPIO */
 #define IT8728F_IR   0x0a /* Consumer IR */
 
+/* Registers in LDNs */
+#define IT8728F_EC_PCR1	0xf2
+#define IT8728F_EC_PCR2	0xf4
+
 /* Global configuration registers. */
 #define IT8728F_CONFIG_REG_CC        0x02 /* Configure Control (write-only). */
 #define IT8728F_CONFIG_REG_LDN       0x07 /* Logical Device Number. */
diff --git a/src/superio/ite/it8728f/superio.c b/src/superio/ite/it8728f/superio.c
index 7107bb4..d05be54 100644
--- a/src/superio/ite/it8728f/superio.c
+++ b/src/superio/ite/it8728f/superio.c
@@ -20,10 +20,42 @@
 #include <pc80/keyboard.h>
 #include <stdlib.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 power_control_init(struct device *dev)
+{
+	int power_on = MAINBOARD_POWER_OFF;
+	u8 value;
+
+	get_option(&power_on, "power_on_after_fail");
+
+	pnp_enter_conf_mode(dev);
+	pnp_set_logical_device(dev);
+
+	value = pnp_read_config(dev, IT8728F_EC_PCR1);
+	if (power_on == MAINBOARD_POWER_KEEP)
+		value |= (1 << 5);
+	else
+		value &= ~(1 << 5);
+	pnp_write_config(dev, IT8728F_EC_PCR1, value);
+
+	value = pnp_read_config(dev, IT8728F_EC_PCR2);
+	if (power_on == MAINBOARD_POWER_ON)
+		value |= (1 << 5);
+	else
+		value &= ~(1 << 5);
+	pnp_write_config(dev, IT8728F_EC_PCR2, value);
+
+	pnp_exit_conf_mode(dev);
+}
+
 static void it8728f_init(struct device *dev)
 {
 	const struct superio_ite_it8728f_config *conf = dev->chip_info;
@@ -39,6 +71,7 @@
 		if (!conf || !res)
 			break;
 		ite_ec_init(res->base, &conf->ec);
+		power_control_init(dev);
 		break;
 	case IT8728F_KBCK:
 		set_kbc_ps2_mode();

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