1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
6 * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
26 #include <sys/param.h>
28 #include <sys/mutex.h>
30 #include <sys/kernel.h>
31 #include <sys/socket.h>
32 #include <sys/systm.h>
33 #include <sys/malloc.h>
34 #include <sys/queue.h>
35 #include <sys/taskqueue.h>
37 #include <sys/endian.h>
38 #include <sys/linker.h>
41 #include <net/ethernet.h>
42 #include <net/if_media.h>
44 #include <net80211/ieee80211_var.h>
45 #include <net80211/ieee80211_radiotap.h>
47 #include <dev/rtwn/if_rtwnreg.h>
48 #include <dev/rtwn/if_rtwnvar.h>
50 #include <dev/rtwn/rtl8192c/r92c.h>
51 #include <dev/rtwn/rtl8192c/r92c_reg.h>
55 r92c_iq_calib(struct rtwn_softc *sc)
61 r92c_lc_calib(struct rtwn_softc *sc)
67 txmode = rtwn_read_1(sc, R92C_OFDM1_LSTF + 3);
68 if ((txmode & 0x70) != 0) {
69 /* Disable all continuous Tx. */
70 rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode & ~0x70);
72 /* Set RF mode to standby mode. */
73 for (i = 0; i < sc->nrxchains; i++) {
74 rf_ac[i] = rtwn_rf_read(sc, i, R92C_RF_AC);
75 rtwn_rf_write(sc, i, R92C_RF_AC,
76 RW(rf_ac[i], R92C_RF_AC_MODE,
77 R92C_RF_AC_MODE_STANDBY));
80 /* Block all Tx queues. */
81 rtwn_write_1(sc, R92C_TXPAUSE, R92C_TX_QUEUE_ALL);
83 /* Start calibration. */
84 rtwn_rf_setbits(sc, 0, R92C_RF_CHNLBW, 0, R92C_RF_CHNLBW_LCSTART);
86 /* Give calibration the time to complete. */
87 rtwn_delay(sc, 100000); /* 100ms */
89 /* Restore configuration. */
90 if ((txmode & 0x70) != 0) {
91 /* Restore Tx mode. */
92 rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode);
93 /* Restore RF mode. */
94 for (i = 0; i < sc->nrxchains; i++)
95 rtwn_rf_write(sc, i, R92C_RF_AC, rf_ac[i]);
97 /* Unblock all Tx queues. */
98 rtwn_write_1(sc, R92C_TXPAUSE, 0x00);
103 r92c_temp_measure(struct rtwn_softc *sc)
105 rtwn_rf_write(sc, 0, R92C_RF_T_METER, R92C_RF_T_METER_START);
109 r92c_temp_read(struct rtwn_softc *sc)
111 return (MS(rtwn_rf_read(sc, 0, R92C_RF_T_METER),
112 R92C_RF_T_METER_VAL));