diff options
Diffstat (limited to 'src/northbridge/intel/sandybridge/acpi/hostbridge.asl')
| -rw-r--r-- | src/northbridge/intel/sandybridge/acpi/hostbridge.asl | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/src/northbridge/intel/sandybridge/acpi/hostbridge.asl b/src/northbridge/intel/sandybridge/acpi/hostbridge.asl index 8dd1de6ff6..93db98d1c5 100644 --- a/src/northbridge/intel/sandybridge/acpi/hostbridge.asl +++ b/src/northbridge/intel/sandybridge/acpi/hostbridge.asl @@ -101,6 +101,8 @@ Device (MCHC) TLUD, 32, } + Mutex (CTCM, 1) /* CTDP Switch Mutex (sync level 1) */ + Name (CTCC, 0) /* CTDP Current Selection */ Name (CTCN, 0) /* CTDP Nominal Select */ Name (CTCD, 1) /* CTDP Down Select */ Name (CTCU, 2) /* CTDP Up Select */ @@ -167,12 +169,16 @@ Device (MCHC) /* Set TDP Down */ Method (STND, 0, Serialized) { - Store ("Set TDP Down", Debug) - - If (LEqual (CTCD, CTCS)) { + If (Acquire (CTCM, 100)) { + Return (0) + } + If (LEqual (CTCD, CTCC)) { + Release (CTCM) Return (0) } + Store ("Set TDP Down", Debug) + /* Set CTC */ Store (CTCD, CTCS) @@ -189,18 +195,26 @@ Device (MCHC) /* Set PL1 */ Store (CTDD, PL1V) + /* Store the new TDP Down setting */ + Store (CTCD, CTCC) + + Release (CTCM) Return (1) } /* Set TDP Nominal from Down */ Method (STDN, 0, Serialized) { - Store ("Set TDP Nominal", Debug) - - If (LEqual (CTCN, CTCS)) { + If (Acquire (CTCM, 100)) { + Return (0) + } + If (LEqual (CTCN, CTCC)) { + Release (CTCM) Return (0) } + Store ("Set TDP Nominal", Debug) + /* Set PL1 */ Store (CTDN, PL1V) @@ -217,6 +231,10 @@ Device (MCHC) /* Set CTC */ Store (CTCN, CTCS) + /* Store the new TDP Nominal setting */ + Store (CTCN, CTCC) + + Release (CTCM) Return (1) } } |