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 extern const struct ath9k_percal_data iq_cal_multi_sample;
  21 extern const struct ath9k_percal_data iq_cal_single_sample;
  22 extern const struct ath9k_percal_data adc_gain_cal_multi_sample;
  23 extern const struct ath9k_percal_data adc_gain_cal_single_sample;
  24 extern const struct ath9k_percal_data adc_dc_cal_multi_sample;
  25 extern const struct ath9k_percal_data adc_dc_cal_single_sample;
  26 extern const struct ath9k_percal_data adc_init_dc_cal;
  27
  28 #define AR_PHY_CCA_MAX_AR5416_GOOD_VALUE        -85
  29 #define AR_PHY_CCA_MAX_AR9280_GOOD_VALUE        -112
  30 #define AR_PHY_CCA_MAX_AR9285_GOOD_VALUE        -118
  31 #define AR_PHY_CCA_MAX_AR9287_GOOD_VALUE        -118
  32 #define AR_PHY_CCA_MAX_HIGH_VALUE               -62
  33 #define AR_PHY_CCA_MIN_BAD_VALUE                -140
  34 #define AR_PHY_CCA_FILTERWINDOW_LENGTH_INIT     3
  35 #define AR_PHY_CCA_FILTERWINDOW_LENGTH          5
  36
  37 #define NUM_NF_READINGS       6
  38 #define ATH9K_NF_CAL_HIST_MAX 5
  39
  40 struct ar5416IniArray {
  41         u32 *ia_array;
  42         u32 ia_rows;
  43         u32 ia_columns;
  44 };
  45
  46 #define INIT_INI_ARRAY(iniarray, array, rows, columns) do {     \
  47                 (iniarray)->ia_array = (u32 *)(array);          \
  48                 (iniarray)->ia_rows = (rows);                   \
  49                 (iniarray)->ia_columns = (columns);             \
  50         } while (0)
  51
  52 #define INI_RA(iniarray, row, column) \
  53         (((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])
  54
  55 #define INIT_CAL(_perCal) do {                          \
  56                 (_perCal)->calState = CAL_WAITING;      \
  57                 (_perCal)->calNext = NULL;              \
  58         } while (0)
  59
  60 #define INSERT_CAL(_ahp, _perCal)                                       \
  61         do {                                                            \
  62                 if ((_ahp)->cal_list_last == NULL) {                    \
  63                         (_ahp)->cal_list =                              \
  64                                 (_ahp)->cal_list_last = (_perCal);      \
  65                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  66                 } else {                                                \
  67                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  68                         (_ahp)->cal_list_last = (_perCal);              \
  69                         (_perCal)->calNext = (_ahp)->cal_list;  \
  70                 }                                                       \
  71         } while (0)
  72
  73 enum ath9k_cal_types {
  74         ADC_DC_INIT_CAL = 0x1,
  75         ADC_GAIN_CAL = 0x2,
  76         ADC_DC_CAL = 0x4,
  77         IQ_MISMATCH_CAL = 0x8
  78 };
  79
  80 enum ath9k_cal_state {
  81         CAL_INACTIVE,
  82         CAL_WAITING,
  83         CAL_RUNNING,
  84         CAL_DONE
  85 };
  86
  87 #define MIN_CAL_SAMPLES     1
  88 #define MAX_CAL_SAMPLES    64
  89 #define INIT_LOG_COUNT      5
  90 #define PER_MIN_LOG_COUNT   2
  91 #define PER_MAX_LOG_COUNT  10
  92
  93 struct ath9k_percal_data {
  94         enum ath9k_cal_types calType;
  95         u32 calNumSamples;
  96         u32 calCountMax;
  97         void (*calCollect) (struct ath_hw *);
  98         void (*calPostProc) (struct ath_hw *, u8);
  99 };
 100
 101 struct ath9k_cal_list {
 102         const struct ath9k_percal_data *calData;
 103         enum ath9k_cal_state calState;
 104         struct ath9k_cal_list *calNext;
 105 };
 106
 107 struct ath9k_nfcal_hist {
 108         int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
 109         u8 currIndex;
 110         int16_t privNF;
 111         u8 invalidNFcount;
 112 };
 113
 114 #define MAX_PACAL_SKIPCOUNT 8
 115 struct ath9k_pacal_info{
 116         int32_t prev_offset;    /* Previous value of PA offset value */
 117         int8_t max_skipcount;   /* Max No. of times PACAL can be skipped */
 118         int8_t skipcount;       /* No. of times the PACAL to be skipped */
 119 };
 120
 121 bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
 122 void ath9k_hw_start_nfcal(struct ath_hw *ah);
 123 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
 124 int16_t ath9k_hw_getnf(struct ath_hw *ah,
 125                        struct ath9k_channel *chan);
 126 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
 127 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
 128 bool ath9k_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
 129                         u8 rxchainmask, bool longcal);
 130 bool ath9k_hw_init_cal(struct ath_hw *ah,
 131                        struct ath9k_channel *chan);
 132
 133 #endif /* CALIB_H */