From 47d8a487f11a9780a9d9c4955c55e5b42edbbdfc Mon Sep 17 00:00:00 2001
From: Joshua Wise <joshua@escape.wv.cc.cmu.edu>
Date: Thu, 8 Oct 2009 09:38:31 -0400
Subject: [PATCH] Add support for the power button SMI.

---
 ich2/smi.c    | 15 ++++++++++++++-
 include/smi.h |  1 +
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/ich2/smi.c b/ich2/smi.c
index c9a1f0e..8865eab 100644
--- a/ich2/smi.c
+++ b/ich2/smi.c
@@ -101,7 +101,10 @@ void smi_poll()
 		
 		if (pm1_sts & ICH2_PM1_STS_PWRBTN_STS)
 		{
-			output("Unhandled: PM1_STS: PWRBTN_STS");
+			if (_handlers[SMI_EVENT_PWRBTN] == SMI_HANDLER_NONE)
+				output("Unhandled: PM1_STS: PWRBTN_STS");
+			else if (_handlers[SMI_EVENT_FAST_TIMER] != SMI_HANDLER_IGNORE)
+				_handlers[SMI_EVENT_PWRBTN](SMI_EVENT_PWRBTN);
 			outw(_get_PMBASE() + ICH2_PMBASE_PM1_STS, ICH2_PM1_STS_PWRBTN_STS);
 		}
 		
@@ -224,6 +227,11 @@ int smi_enable_event(smi_event_t ev)
 			inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) |
 				ICH2_SMI_EN_BIOS_EN);
 		return 0;
+	case SMI_EVENT_PWRBTN:
+		outl(_get_PMBASE() + ICH2_PMBASE_PM1_EN,
+			inl(_get_PMBASE() + ICH2_PMBASE_PM1_EN) |
+				ICH2_PM1_EN_PWRBTN_EN);
+		return 0;
 	default:
 		return -1;
 	}
@@ -248,6 +256,11 @@ int smi_disable_event(smi_event_t ev)
 			inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) &
 				~ICH2_SMI_EN_BIOS_EN);
 		return 0;
+	case SMI_EVENT_PWRBTN:
+		outl(_get_PMBASE() + ICH2_PMBASE_PM1_EN,
+			inl(_get_PMBASE() + ICH2_PMBASE_PM1_EN) &
+				~ICH2_PM1_EN_PWRBTN_EN);
+		return 0;
 	default:
 		return -1;
 	}
diff --git a/include/smi.h b/include/smi.h
index a5dad92..5cc7a44 100644
--- a/include/smi.h
+++ b/include/smi.h
@@ -21,6 +21,7 @@ typedef enum {
 	SMI_EVENT_FAST_TIMER = 0,
 	SMI_EVENT_DEVTRAP_KBC,
 	SMI_EVENT_GBL_RLS,
+	SMI_EVENT_PWRBTN,
 	SMI_EVENT_MAX
 } smi_event_t;
 
-- 
2.39.2