From a4d179af562770d17ab92dc57f7104fd78be75ba Mon Sep 17 00:00:00 2001
From: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Date: Sun, 21 Jun 2015 18:58:30 +0200
Subject: amd/acpi: Clean up SMBus references.

Replace the AMD SMBus section with the equivalent SB800 smbus.asl
include or remove already commented-out sections.

Verified by running the cpp preprocessor over the DSDTs and diffing the
results against this patch.

The only change is in src/mainboard/siemens/sitemp_g1p1/dsdt.asl, where
someone added RADD and SADD to the OpRegion, but those are unused, so
removing them is fine.

Change-Id: I074c8a1ed1c9a944d4988752bd0fc42c199c766c
Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Reviewed-on: http://review.coreboot.org/10618
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
---
 src/mainboard/asus/m4a78-em/dsdt.asl | 95 +-----------------------------------
 1 file changed, 1 insertion(+), 94 deletions(-)

(limited to 'src/mainboard/asus/m4a78-em')

diff --git a/src/mainboard/asus/m4a78-em/dsdt.asl b/src/mainboard/asus/m4a78-em/dsdt.asl
index 0a20ceeb64..c4d09ea912 100644
--- a/src/mainboard/asus/m4a78-em/dsdt.asl
+++ b/src/mainboard/asus/m4a78-em/dsdt.asl
@@ -1682,100 +1682,7 @@ DefinitionBlock (
 		}
 	} /* End Scope SI */
 
-	/* SMBUS Support */
-	Mutex (SBX0, 0x00)
-	OperationRegion (SMB0, SystemIO, 0xB00, 0x0C)
-		Field (SMB0, ByteAcc, NoLock, Preserve) {
-			HSTS,   8, /* SMBUS status */
-			SSTS,   8,  /* SMBUS slave status */
-			HCNT,   8,  /* SMBUS control */
-			HCMD,   8,  /* SMBUS host cmd */
-			HADD,   8,  /* SMBUS address */
-			DAT0,   8,  /* SMBUS data0 */
-			DAT1,   8,  /* SMBUS data1 */
-			BLKD,   8,  /* SMBUS block data */
-			SCNT,   8,  /* SMBUS slave control */
-			SCMD,   8,  /* SMBUS shadow cmd */
-			SEVT,   8,  /* SMBUS slave event */
-			SDAT,   8  /* SMBUS slave data */
-	}
-
-	Method (WCLR, 0, NotSerialized) { /* clear SMBUS status register */
-		Store (0x1E, HSTS)
-		Store (0xFA, Local0)
-		While (LAnd (LNotEqual (And (HSTS, 0x1E), Zero), LGreater (Local0, Zero))) {
-			Stall (0x64)
-			Decrement (Local0)
-		}
-
-		Return (Local0)
-	}
-
-	Method (SWTC, 1, NotSerialized) {
-		Store (Arg0, Local0)
-		Store (0x07, Local2)
-		Store (One, Local1)
-		While (LEqual (Local1, One)) {
-			Store (And (HSTS, 0x1E), Local3)
-			If (LNotEqual (Local3, Zero)) { /* read sucess */
-				If (LEqual (Local3, 0x02)) {
-					Store (Zero, Local2)
-				}
-
-				Store (Zero, Local1)
-			}
-			Else {
-				If (LLess (Local0, 0x0A)) { /* read failure */
-					Store (0x10, Local2)
-					Store (Zero, Local1)
-				}
-				Else {
-					Sleep (0x0A) /* 10 ms, try again */
-					Subtract (Local0, 0x0A, Local0)
-				}
-			}
-		}
-
-		Return (Local2)
-	}
-
-	Method (SMBR, 3, NotSerialized) {
-		Store (0x07, Local0)
-		If (LEqual (Acquire (SBX0, 0xFFFF), Zero)) {
-			Store (WCLR (), Local0) /* clear SMBUS status register before read data */
-			If (LEqual (Local0, Zero)) {
-				Release (SBX0)
-				Return (0x0)
-			}
-
-			Store (0x1F, HSTS)
-			Store (Or (ShiftLeft (Arg1, One), One), HADD)
-			Store (Arg2, HCMD)
-			If (LEqual (Arg0, 0x07)) {
-				Store (0x48, HCNT) /* read byte */
-			}
-
-			Store (SWTC (0x03E8), Local1) /* 1000 ms */
-			If (LEqual (Local1, Zero)) {
-				If (LEqual (Arg0, 0x07)) {
-					Store (DAT0, Local0)
-				}
-			}
-			Else {
-				Store (Local1, Local0)
-			}
-
-			Release (SBX0)
-		}
-
-		/* DBGO("the value of SMBusData0 register ") */
-		/* DBGO(Arg2) */
-		/* DBGO(" is ") */
-		/* DBGO(Local0) */
-		/* DBGO("\n") */
-
-		Return (Local0)
-	}
+	#include <southbridge/amd/cimx/sb800/acpi/smbus.asl>
 
 	/* THERMAL */
 	Scope(\_TZ) {
-- 
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