Add acpi_get_sleep_type() to i82371eb and P2B _PTS/_WAK methods

[coreboot.git] / src / mainboard / asus / p2b / dsdt.asl

diff --git a/src/mainboard/asus/p2b/dsdt.asl b/src/mainboard/asus/p2b/dsdt.asl
index 5e6411ce1b273f6ee0f623ef44a828b1ca5c0840..c5befa00b3f89a8f99f9882916c4c4018f8b55bc 100644 (file)
--- a/src/mainboard/asus/p2b/dsdt.asl
+++ b/src/mainboard/asus/p2b/dsdt.asl
@@ -21,27 +21,51 @@
 
 DefinitionBlock ("DSDT.aml", "DSDT", 2, "CORE  ", "COREBOOT", 1)
 {
-       /* For now only define 2 power states:
-        *  - S0 which is fully on
-        *  - S5 which is soft off
-        * Any others would involve declaring the wake up methods.
-        */
-
-       /* intel i82371eb (piix4e) datasheet, section 7.2.3, page 142 */
        /*
-       000b / 0x0: soft off/suspend to disk (soff/std)                 s5
-       001b / 0x1: suspend to ram (str)                                s3
-       010b / 0x2: powered on suspend, context lost (poscl)            s1
-       011b / 0x3: powered on suspend, cpu context lost (posccl)       s2
-       100b / 0x4: powered on suspend, context maintained (pos)        s4
-       101b / 0x5: working (clock control)                             s0
-       110b / 0x6: reserved
-       111b / 0x7: reserved
-       */
+        * Intel 82371EB (PIIX4E) datasheet, section 7.2.3, page 142
+        *
+        * 0: soft off/suspend to disk                                  S5
+        * 1: suspend to ram                                            S3
+        * 2: powered on suspend, context lost                          S2
+        *    Note: 'context lost' means the CPU restarts at the reset
+        *          vector
+        * 3: powered on suspend, CPU context lost                      S1
+        *    Note: Looks like 'CPU context lost' does _not_ mean the
+        *          CPU restarts at the reset vector. Most likely only
+        *          caches are lost, so both 0x3 and 0x4 map to acpi S1
+        * 4: powered on suspend, context maintained                    S1
+        * 5: working (clock control)                                   S0
+        * 6: reserved
+        * 7: reserved
+        */
        Name (\_S0, Package () { 0x05, 0x05, 0x00, 0x00 })
        Name (\_S1, Package () { 0x03, 0x03, 0x00, 0x00 })
        Name (\_S5, Package () { 0x00, 0x00, 0x00, 0x00 })
 
+       OperationRegion (SIO1, SystemIO, Add(DEFAULT_PMBASE, GPO0), 2)
+       Field (SIO1, ByteAcc, NoLock, Preserve)
+       {
+               FANP,   1, /* CPU/case fan power */
+               Offset (0x01),
+               PLED,   1,
+       }
+
+       Method (\_PTS, 1, NotSerialized)
+       {
+               /* Disable fan, blink power led */
+               Store (Zero, FANP)
+               Store (Zero, PLED)
+       }
+
+       Method (\_WAK, 1, NotSerialized)
+       {
+               /* Re-enable fan, stop power led blinking */
+               Store (One, FANP)
+               Store (One, PLED)
+               /* wake OK */
+               Return(Package(0x02){0x00, 0x00})
+       }
+
        /* Root of the bus hierarchy */
        Scope (\_SB)
        {