Expose USB port physical information in ACPI by sysctl.

[takawata]

Summary

This expose USB port physical information (_UPC, _PLD) by sysctl.
This adds per port sysctl node tree with 3 children: upc, pldraw, info
upc is integer value that expose _UPC.
pldraw is buffer that raw PLD value.
info is interpreted version of above two.
example output follows.

sysctl -x dev.uhub.0.port1

dev.uhub.0.port1.info: Handle \_SB_.PCI0.XHC_.RHUB.HS01

Connectable TypeA port                                                  
Width 0 mm Height 0 mm                                                  
Visible                                                                 
PanelPosition: Right                                                    
VertPosition: Center                                                    
HorizPosition: Lower                                                    
Shape: HRect                                                            
Group Orientation Horizontal                                            
GroupToken 0                                                            
GroupPosition 1                                                         
 Eject OSPM

dev.uhub.0.port1.pldraw: Format:A Length:16 Dump:0x81000000000000005912800003000
000
dev.uhub.0.port1.upc: 0x80000000

[• hselasky]

Looks good. Some minor nits. Please fix before commit.

sys/dev/usb/usb_hub_acpi.c

217

Please indent this line properly.

222

same here.

373–374

spelling: Skipping

409

{ -> should go to next line

[• hselasky]

Please re-base this patch on top of the latest 13-current.

Thank you!

--HPS

[takawata]

Merge the head version.

[• hselasky]

sys/dev/usb/usb_hub_acpi.c

453

This function is not allowed to fail! Once uhub_attach() returns success, the wrapper attach needs to return success aswell, else we start leaking uhub_softc's because nobody is calling uhub_detach() !

[• hselasky]

Was patch updated?

[takawata]

Run detach routine on fail.

[• hselasky]

sys/dev/usb/usb_hub_acpi.c

477

style: return (ret);

523

style: return (ret);

[takawata]

fix style .