diff options
| author | Marshall Dawson <marshalldawson3rd@gmail.com> | 2018-09-26 15:52:00 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-10-01 15:01:16 +0000 |
| commit | cb2b70b3d205d4352bf92e917b8f7c1e9a12a032 (patch) | |
| tree | 8833a2d9718a050434521df1fe46e01e80cc17eb /src/soc/amd | |
| parent | 9c5dc1fd449331a16b6cc50afba83e41aa20185e (diff) | |
amd/stoneyridge: Add ASL helper for AOAC PwrGood Control
Add a method to assist with setting the PwrGood Control register, which
will be useful for various devices.
BUG=b:77602074
Change-Id: Ief602c4bc42d27b3e236d24db815b990f3a2419c
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/28771
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl b/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl index b8956b4984..e875f43f40 100644 --- a/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl +++ b/src/soc/amd/stoneyridge/acpi/sb_pci0_fch.asl @@ -639,3 +639,28 @@ Method(FWAK,0, Serialized) /* FCH _WAK */ } } } + +/* + * Helper for setting a bit in AOACxA0 PwrGood Control + * Arg0: bit to set or clear + * Arg1: 0 = clear bit[Arg0], non-zero = set bit[Arg0] + */ +Method(PWGC,2, Serialized) +{ + And (PGA3, 0xdf, Local0) /* do SwUsb3SlpShutdown below */ + if(Arg1) { + Or(Arg0, Local0, Local0) + } else { + Not(Arg0, Local1) + And(Local1, Local0, Local0) + } + Store(Local0, PGA3) + if(LEqual(Arg0, 0x20)) { /* if SwUsb3SlpShutdown */ + Store(PGA3, Local0) + And(Arg0, Local0, Local0) + while(LNot(Local0)) { /* wait SwUsb3SlpShutdown to complete */ + Store(PGA3, Local0) + And(Arg0, Local0, Local0) + } + } +} |