Re: Event handler for ACAD

[Alexey Starikovskiy <alexey_y_starikovskiy@linux.intel.com>]

1. ACPI names are 4 bytes long, so AC will be padded with _.
2. Your output shows that there is no handler for AC event, do you have ACPI AC driver compiled and loaded?



Andriy Stepanov wrote:
> Hello!
> I have a notebook.
> 
> System doesn't change energy consumption policy when I unplug ACAD.
> 
> # service acpid stop
> # cat /proc/acpi/event
> processor CPU0 00000080 00000001   <----- unplug ACAD
> processor CPU0 00000080 00000000
> 
> 
> No any messages about ACAD.
> 
> My dsdt.dsl have two following interesting sections:
> 1.
> Device (AC)
>         {
>             Name (_HID, "ACPI0003")
>             Name (_PCL, Package (0x01)
>             {
>                 \_SB
>             })
>             Method (_PSR, 0, NotSerialized)
>             {
>                 If (\_SB.PCI0.EC.ADP)
>                 {
>                     Store (0x03, \DBUG)
>                     Store (Zero, \_PR.CPU0._PPC)
>                 }
>                 Else
>                 {
>                     Store (0x01, \DBUG)
>                     Store (0x01, \_PR.CPU0._PPC)
>                 }
> 
>                 Notify (\_PR.CPU0, 0x80)
>                 If (\_SB.PCI0.EC.ECOK)
>                 {
>                     Return (\_SB.PCI0.EC.ADP)
>                 }
>             }
> 
> 2.
> Method (_Q16, 0, NotSerialized)
>                 {
>                     Notify (\_SB.AC, 0x80)
>                     If (\_SB.PCI0.EC.ADP)
>                     {
>                         Store (0x03, \DBUG)
>                         Store (Zero, \_PR.CPU0._PPC)
>                     }
>                     Else
>                     {
>                         Store (0x01, \DBUG)
>                         Store (0x01, \_PR.CPU0._PPC)
>                     }
> 
>                     Notify (\_PR.CPU0, 0x80)
>                 }
> 
> 
> 
> 
> Method _Q16 always called when I unplug ACAD.
> 
> 
> For instruction: Notify (\_SB.AC, 0x80)
> ACPI debug subsystem print:
> 
> 
> 
> <4>  nsdump-0087 [33] ns_print_pathname     : [_SB_.AC__]
> <4>nssearch-0104 [35] ns_search_node        : Searching \ (c0352bd0) For 
> [_SB_] (Untyped)
> <4>nssearch-0138 [35] ns_search_node        : Name [_SB_] (Device) 
> cbf09ca8 found in scope ["\" ] c0352bd0
> <4>nssearch-0104 [35] ns_search_node        : Searching \_SB_ (cbf09ca8) 
> For [AC__] (Untyped)
> <4>nssearch-0138 [35] ns_search_node        : Name [AC__] (Device) 
> cbf092e8 found in scope [_SB_] cbf09ca8
> <4>  psloop-0378 [30] ps_parse_loop         : Opcode 000A [ByteConst] Op 
> cbba1250 Aml cc809a6a aml_offset 0000B
> <4> psscope-0228 [31] ps_pop_scope          : Popped Op cbba1218 Args 0
> <4>  psloop-0793 [30] ps_parse_loop         : Popped scope, Op=cbba1218
> <4> dsutils-0475 [33] ds_create_operand     : Getting a name: Arg=cbba1234
> <4> exnames-0276 [34] ex_get_name_string    : root_prefix(\) at cc809a5f
> <4> exnames-0318 [34] ex_get_name_string    : dual_name_prefix at cc809a60
> <4> exnames-0175 [35] ex_name_segment       : Bytes from stream:
> <4> exnames-0181 [35] ex_name_segment       : _
> <4> exnames-0181 [35] ex_name_segment       : S
> <4> exnames-0181 [35] ex_name_segment       : B
> <4> exnames-0181 [35] ex_name_segment       : _
> <4> exnames-0194 [35] ex_name_segment       : Appended to - \._SB_
> <4> exnames-0175 [35] ex_name_segment       : Bytes from stream:
> <4> exnames-0181 [35] ex_name_segment       : A
> <4> exnames-0181 [35] ex_name_segment       : C
> <4> exnames-0181 [35] ex_name_segment       : _
> <4> exnames-0181 [35] ex_name_segment       : _
> <4> exnames-0194 [35] ex_name_segment       : Appended to - \._SB_AC__
> <4>nsaccess-0403 [34] ns_lookup             : Path is absolute from root 
> [c0352bd0]
> <4>nsaccess-0489 [34] ns_lookup             : Dual Pathname (2 segments, 
> Flags=3)
> <4>  nsdump-0087 [34] ns_print_pathname     : [_SB_.AC__]
> <4>nssearch-0104 [36] ns_search_node        : Searching \ (c0352bd0) For 
> [_SB_] (Untyped)
> <4>nssearch-0138 [36] ns_search_node        : Name [_SB_] (Device) 
> cbf09ca8 found in scope ["\" ] c0352bd0
> <4>nssearch-0104 [36] ns_search_node        : Searching \_SB_ (cbf09ca8) 
> For [AC__] (Untyped)
> <4>nssearch-0138 [36] ns_search_node        : Name [AC__] (Device) 
> cbf092e8 found in scope [_SB_] cbf09ca8
> <4>dswstate-0424 [33] ds_obj_stack_push     : Obj=cbf092e8 [Device] 
> State=c1e6b828 #Ops=1
> <4> dsutils-0712 [32] ds_create_operands    : Arg #0 (cbba1234) done, 
> Arg1=cbba1234
> <4>dswstate-0424 [33] ds_obj_stack_push     : Obj=cbd9bb8c [Integer] 
> State=c1e6b828 #Ops=2
> <4> dsutils-0712 [32] ds_create_operands    : Arg #1 (cbba1250) done, 
> Arg1=cbba1234
> <4>dswstate-0380 [31] ds_result_stack_pop   : Result=ca92e244 
> remaining_results=0 State=c1e6b828
> <4> exresop-0162 [32] ex_resolve_operands   : Opcode 86 [Notify] 
> required_operand_types=000001A6
> <4>exresolv-0119 [33] ex_resolve_to_value   : Resolved object cbd9bb8c
> <4>  exdump-0792 [31] ex_dump_operands      : ************* Operand 
> Stack Contents (Opcode [Notify], 2 Operands)
> <4>  exdump-0494 [31] ex_dump_operand       : cbd9bb8c Integer 
> 0000000000000080
> <4>  exdump-0474 [31] ex_dump_operand       : cbf092e8 Namespace Node:  
> 0  AC__ Device       cbf092e8 06
> <4>  exdump-0806 [31] ex_dump_operands      : ************* Operand 
> Stack dump from dswexec(426), after ex_resolve_operands
> <4>  evmisc-0138 [32] ev_queue_notify_reques: Dispatching Notify(80) on 
> node cbf092e8
> <4>  evmisc-0146 [32] ev_queue_notify_reques: Notify value: 0x80 
> **Device Specific**
> <4>  evmisc-0208 [32] ev_queue_notify_reques: No notify handler for 
> Notify(AC__, 80) node cbf092e8
> 
> 
> 
> Why there is string "No notify handler for Notify(AC__, 80) .... ???
> 
> Another notify (Notify (\_PR.CPU0, 0x80)) works fine!
> 
> Why there is "AC__" not "AC" ?
> 
> Thanks!
> 
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