mirror of https://github.com/hak5/openwrt.git
40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
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The attached patch fixes the problem of very weak packets being send out
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after periodic calibration
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Signed-off-by: Karol Kowalik <karol.kowalik@cnri.dit.ie>
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Index: madwifi-dfs-r3252/ath/if_ath.c
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===================================================================
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--- madwifi-dfs-r3252.orig/ath/if_ath.c 2008-01-26 03:56:26.461576124 +0100
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+++ madwifi-dfs-r3252/ath/if_ath.c 2008-01-26 03:58:50.628969172 +0100
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@@ -8875,6 +8875,9 @@
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struct ieee80211com *ic = &sc->sc_ic;
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/* u_int32_t nchans; */
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HAL_BOOL isIQdone = AH_FALSE;
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+ u_int8_t papd_probe_power;
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+ u_int8_t papd_probe_power_max = 63;
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+ u_int16_t crnt_power_hdBm = sc->sc_curtxpow;
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sc->sc_stats.ast_per_cal++;
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DPRINTF(sc, ATH_DEBUG_CALIBRATE,
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@@ -8912,6 +8915,20 @@
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sc->sc_stats.ast_per_calfail++;
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}
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+ /*
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+ * After calibration is done we need to update AR5K_PHY_PAPD_PROBE
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+ * register with the probe_tx_power equal to current tx_power
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+ * otherwise a power drop may be observed
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+ */
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+ crnt_power_hdBm = crnt_power_hdBm <= ic->ic_txpowlimit ? crnt_power_hdBm : ic->ic_txpowlimit;
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+ papd_probe_power = papd_probe_power_max - (ic->ic_txpowlimit - crnt_power_hdBm);
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+#define AR5K_PHY_PAPD_PROBE_TX_NEXT 0x00008000
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+#define AR5K_PHY_PAPD_PROBE 0x9930
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+ OS_REG_WRITE(ah, AR5K_PHY_PAPD_PROBE,
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+ AR5K_PHY_PAPD_PROBE_TX_NEXT | (papd_probe_power << 9));
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+#undef AR5K_PHY_PAPD_PROBE_TX_NEXT
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+#undef AR5K_PHY_PAPD_PROBE
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+
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ath_hal_process_noisefloor(ah);
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if (isIQdone == AH_TRUE) {
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/* Unless user has overridden calibration interval,
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