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urtwn(4): simplify urtwn_tsf_sync_enable().

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- Drop TSF initialization; device can discover it without our help.
- Do not touch R92C_BCN_CTRL_EN_BCN bit in STA mode.
- Add 'static' keyword for function definition.

Tested with RTL8188EU, STA mode.

Reviewed by:	kevlo
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D3801
This commit is contained in:
Andriy Voskoboinyk 2015-11-06 11:29:24 +00:00
parent db615b2bb1
commit 160caba341
1 changed files with 1 additions and 22 deletions
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23
sys/dev/usb/wlan/if_urtwn.c
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@ -1473,32 +1473,11 @@ urtwn_ra_init(struct urtwn_softc *sc)
return (0);
}
void
static void
urtwn_tsf_sync_enable(struct urtwn_softc *sc)
{
struct ieee80211com *ic = &sc->sc_ic;
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
struct ieee80211_node *ni = vap->iv_bss;
uint64_t tsf;
/* Enable TSF synchronization. */
urtwn_write_1(sc, R92C_BCN_CTRL,
urtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_DIS_TSF_UDT0);
urtwn_write_1(sc, R92C_BCN_CTRL,
urtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_EN_BCN);
/* Set initial TSF. */
memcpy(&tsf, ni->ni_tstamp.data, 8);
tsf = le64toh(tsf);
tsf = tsf - (tsf % (vap->iv_bss->ni_intval * IEEE80211_DUR_TU));
tsf -= IEEE80211_DUR_TU;
urtwn_write_4(sc, R92C_TSFTR + 0, tsf);
urtwn_write_4(sc, R92C_TSFTR + 4, tsf >> 32);
urtwn_write_1(sc, R92C_BCN_CTRL,
urtwn_read_1(sc, R92C_BCN_CTRL) | R92C_BCN_CTRL_EN_BCN);
}
static void