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      1 /*
      2  * Copyright (c) 2008-2009 Sam Leffler, Errno Consulting
      3  * Copyright (c) 2008 Atheros Communications, Inc.
      4  *
      5  * Permission to use, copy, modify, and/or distribute this software for any
      6  * purpose with or without fee is hereby granted, provided that the above
      7  * copyright notice and this permission notice appear in all copies.
      8  *
      9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     16  *
     17  * $FreeBSD: src/sys/dev/ath/ath_hal/ar5416/ar9285.c,v 1.1 2010/02/15 17:49:49 rpaulo Exp $
     18  */
     19 #include "opt_ah.h"
     20 
     21 #include "ah.h"
     22 #include "ah_internal.h"
     23 
     24 #include "ah_eeprom_v14.h"
     25 
     26 #include "ar5416/ar9280.h"
     27 #include "ar5416/ar9285.h"
     28 #include "ar5416/ar5416reg.h"
     29 #include "ar5416/ar5416phy.h"
     30 
     31 static void
     32 ar9285GetNoiseFloor(struct ath_hal *ah, int16_t nfarray[])
     33 {
     34 	int16_t nf;
     35 
     36 	nf = MS(OS_REG_READ(ah, AR_PHY_CCA), AR9280_PHY_MINCCA_PWR);
     37 	if (nf & 0x100)
     38 		nf = 0 - ((nf ^ 0x1ff) + 1);
     39 	HALDEBUG(ah, HAL_DEBUG_NFCAL,
     40 	    "NF calibrated [ctl] [chain 0] is %d\n", nf);
     41 	nfarray[0] = nf;
     42 
     43 	nfarray[1] = 0;
     44 
     45 	nf = MS(OS_REG_READ(ah, AR_PHY_EXT_CCA), AR9280_PHY_EXT_MINCCA_PWR);
     46 	if (nf & 0x100)
     47 		nf = 0 - ((nf ^ 0x1ff) + 1);
     48 	HALDEBUG(ah, HAL_DEBUG_NFCAL,
     49 	    "NF calibrated [ext] [chain 0] is %d\n", nf);
     50 	nfarray[3] = nf;
     51 
     52 	nfarray[4] = 0;
     53 }
     54 
     55 HAL_BOOL
     56 ar9285RfAttach(struct ath_hal *ah, HAL_STATUS *status)
     57 {
     58 	if (ar9280RfAttach(ah, status) == AH_FALSE)
     59 		return AH_FALSE;
     60 
     61 	AH_PRIVATE(ah)->ah_getNoiseFloor = ar9285GetNoiseFloor;
     62 
     63 	return AH_TRUE;
     64 }
     65