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