drivers/net/wireless/ath/ath9k/calib.h

   1 /*
   2  * Copyright (c) 2008-2009 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef CALIB_H
  18 #define CALIB_H
  19
  20 #include "hw.h"
  21
  22 #define AR_PHY_CCA_MAX_AR5416_GOOD_VALUE        -85
  23 #define AR_PHY_CCA_MAX_AR9280_GOOD_VALUE        -112
  24 #define AR_PHY_CCA_MAX_AR9285_GOOD_VALUE        -118
  25 #define AR_PHY_CCA_MAX_AR9287_GOOD_VALUE        -118
  26 #define AR_PHY_CCA_MAX_HIGH_VALUE               -62
  27 #define AR_PHY_CCA_MIN_BAD_VALUE                -140
  28 #define AR_PHY_CCA_FILTERWINDOW_LENGTH_INIT     3
  29 #define AR_PHY_CCA_FILTERWINDOW_LENGTH          5
  30
  31 #define NUM_NF_READINGS       6
  32 #define ATH9K_NF_CAL_HIST_MAX 5
  33
  34 struct ar5416IniArray {
  35         u32 *ia_array;
  36         u32 ia_rows;
  37         u32 ia_columns;
  38 };
  39
  40 #define INIT_INI_ARRAY(iniarray, array, rows, columns) do {     \
  41                 (iniarray)->ia_array = (u32 *)(array);          \
  42                 (iniarray)->ia_rows = (rows);                   \
  43                 (iniarray)->ia_columns = (columns);             \
  44         } while (0)
  45
  46 #define INI_RA(iniarray, row, column) \
  47         (((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])
  48
  49 #define INIT_CAL(_perCal) do {                          \
  50                 (_perCal)->calState = CAL_WAITING;      \
  51                 (_perCal)->calNext = NULL;              \
  52         } while (0)
  53
  54 #define INSERT_CAL(_ahp, _perCal)                                       \
  55         do {                                                            \
  56                 if ((_ahp)->cal_list_last == NULL) {                    \
  57                         (_ahp)->cal_list =                              \
  58                                 (_ahp)->cal_list_last = (_perCal);      \
  59                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  60                 } else {                                                \
  61                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  62                         (_ahp)->cal_list_last = (_perCal);              \
  63                         (_perCal)->calNext = (_ahp)->cal_list;  \
  64                 }                                                       \
  65         } while (0)
  66
  67 enum ath9k_cal_types {
  68         ADC_DC_INIT_CAL = 0x1,
  69         ADC_GAIN_CAL = 0x2,
  70         ADC_DC_CAL = 0x4,
  71         IQ_MISMATCH_CAL = 0x8
  72 };
  73
  74 enum ath9k_cal_state {
  75         CAL_INACTIVE,
  76         CAL_WAITING,
  77         CAL_RUNNING,
  78         CAL_DONE
  79 };
  80
  81 #define MIN_CAL_SAMPLES     1
  82 #define MAX_CAL_SAMPLES    64
  83 #define INIT_LOG_COUNT      5
  84 #define PER_MIN_LOG_COUNT   2
  85 #define PER_MAX_LOG_COUNT  10
  86
  87 struct ath9k_percal_data {
  88         enum ath9k_cal_types calType;
  89         u32 calNumSamples;
  90         u32 calCountMax;
  91         void (*calCollect) (struct ath_hw *);
  92         void (*calPostProc) (struct ath_hw *, u8);
  93 };
  94
  95 struct ath9k_cal_list {
  96         const struct ath9k_percal_data *calData;
  97         enum ath9k_cal_state calState;
  98         struct ath9k_cal_list *calNext;
  99 };
 100
 101 struct ath9k_nfcal_hist {
 102         int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
 103         u8 currIndex;
 104         int16_t privNF;
 105         u8 invalidNFcount;
 106 };
 107
 108 #define MAX_PACAL_SKIPCOUNT 8
 109 struct ath9k_pacal_info{
 110         int32_t prev_offset;    /* Previous value of PA offset value */
 111         int8_t max_skipcount;   /* Max No. of times PACAL can be skipped */
 112         int8_t skipcount;       /* No. of times the PACAL to be skipped */
 113 };
 114
 115 bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
 116 void ath9k_hw_start_nfcal(struct ath_hw *ah);
 117 int16_t ath9k_hw_getnf(struct ath_hw *ah,
 118                        struct ath9k_channel *chan);
 119 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
 120 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
 121 void ath9k_hw_reset_calibration(struct ath_hw *ah,
 122                                 struct ath9k_cal_list *currCal);
 123
 124
 125 #endif /* CALIB_H */