diff options
Diffstat (limited to 'src/soc/intel/apollolake/acpi/scs.asl')
| -rw-r--r-- | src/soc/intel/apollolake/acpi/scs.asl | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/acpi/scs.asl b/src/soc/intel/apollolake/acpi/scs.asl index 4108017fe6..05aedca5a4 100644 --- a/src/soc/intel/apollolake/acpi/scs.asl +++ b/src/soc/intel/apollolake/acpi/scs.asl @@ -22,6 +22,9 @@ Scope (\_SB.PCI0) { Field (SBMM, DWordAcc, NoLock, Preserve) { GENR, 32, + Offset (0x08), + , 5, /* bit[5] represents Force Card Detect SD Card */ + GRR3, 1, /* GPPRVRW3 for SD Card detect Bypass. It's active high */ } /* SCC power gate control method, this method must be serialized as @@ -64,4 +67,39 @@ Scope (\_SB.PCI0) { ^^SCPG(1,0x00000041) } } /* Device (SDHA) */ + + /* SD CARD */ + Device (SDCD) + { + Name (_ADR, 0x001B0000) + + Method (_PS0, 0, NotSerialized) + { + /* Check SDCard CD pin address is valid */ + If (LNotEqual (SCD0, 0)) + { + /* Store DW0 into local0 to get rxstate of GPIO */ + Store (\_SB.GPC0 (\SCD0), Local0) + /* Extract rxstate [bit 1] of sdcard card detect pin */ + And (Local0, PAD_CFG0_RX_STATE, Local0) + /* If the sdcard is present, rxstate is low. + * If sdcard is not present, rxstate is High. + * Write the inverted value of rxstate to GRR3. + */ + If (LEqual (Local0, 0)) { + Store (1, ^^GRR3) + } Else { + Store (0, ^^GRR3) + } + Sleep (2) + } + } + + Method (_PS3, 0, NotSerialized) + { + /* Clear GRR3 to Power Gate SD Controller */ + Store (0, ^^GRR3) + } + + } /* Device (SDCD) */ } |