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nusb/kb: work arround broken split transaction on raspi's dwc otg usb controller

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This commit is contained in:
cinap_lenrek 2018-10-20 19:57:37 +02:00
parent 83e20b4df1
commit 5bb7240ee9
2 changed files with 12 additions and 4 deletions
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1
sys/src/cmd/nusb/kb/hid.h
View file

@ -15,6 +15,7 @@ enum {
Getreport = 0x01, Getreport = 0x01,
Setreport = 0x09, Setreport = 0x09,
Getproto = 0x03, Getproto = 0x03,
Setidle = 0x0a,
Setproto = 0x0b, Setproto = 0x0b,
/* protocols for SET_PROTO request */ /* protocols for SET_PROTO request */

15
sys/src/cmd/nusb/kb/kb.c
View file

@ -299,12 +299,19 @@ repparse(uchar *d, uchar *e,
static int static int
setproto(Hiddev *f, int eid) setproto(Hiddev *f, int eid)
{ {
int id, proto; int proto;
Iface *iface; Iface *iface;
iface = f->dev->usb->ep[eid]->iface; iface = f->dev->usb->ep[eid]->iface;
id = iface->id;
f->nrep = usbcmd(f->dev, Rd2h|Rstd|Riface, Rgetdesc, Dreport<<8, id, /*
* DWC OTG controller misses some split transaction inputs.
* Set nonzero idle time to return more frequent reports
* of keyboard state, to avoid losing key up/down events.
*/
usbcmd(f->dev, Rh2d|Rclass|Riface, Setidle, 8<<8, iface->id, nil, 0);
f->nrep = usbcmd(f->dev, Rd2h|Rstd|Riface, Rgetdesc, Dreport<<8, iface->id,
f->rep, sizeof(f->rep)); f->rep, sizeof(f->rep));
if(f->nrep > 0){ if(f->nrep > 0){
if(debug){ if(debug){
@ -335,7 +342,7 @@ setproto(Hiddev *f, int eid)
} }
proto = Bootproto; proto = Bootproto;
} }
return usbcmd(f->dev, Rh2d|Rclass|Riface, Setproto, proto, id, nil, 0); return usbcmd(f->dev, Rh2d|Rclass|Riface, Setproto, proto, iface->id, nil, 0);
} }
static int static int