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If sc->sc_ep_max is already set use it to find the number of RX and TX

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endpoints. The Allwinner driver will need to set this as the EPINFO
register isn't useful there.

Submitted by:	jmcneill
Reviewed by:	hselasky
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D5881
This commit is contained in:
andrew 2018-03-23 11:08:59 +00:00
parent 7dda8cb473
commit 407726c449
1 changed files with 11 additions and 6 deletions
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17
sys/dev/usb/controller/musb_otg.c
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@ -3168,19 +3168,24 @@ musbotg_init(struct musbotg_softc *sc)
MUSB2_WRITE_1(sc, MUSB2_REG_EPINDEX, 0);
/* read out number of endpoints */
if (sc->sc_ep_max == 0) {
/* read out number of endpoints */
nrx =
(MUSB2_READ_1(sc, MUSB2_REG_EPINFO) / 16);
nrx =
(MUSB2_READ_1(sc, MUSB2_REG_EPINFO) / 16);
ntx =
(MUSB2_READ_1(sc, MUSB2_REG_EPINFO) % 16);
ntx =
(MUSB2_READ_1(sc, MUSB2_REG_EPINFO) % 16);
sc->sc_ep_max = (nrx > ntx) ? nrx : ntx;
} else {
nrx = ntx = sc->sc_ep_max;
}
/* these numbers exclude the control endpoint */
DPRINTFN(2, "RX/TX endpoints: %u/%u\n", nrx, ntx);
sc->sc_ep_max = (nrx > ntx) ? nrx : ntx;
if (sc->sc_ep_max == 0) {
DPRINTFN(2, "ERROR: Looks like the clocks are off!\n");
}