drivers/net/wireless/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 hal_percal_data iq_cal_multi_sample;
  21 extern const struct hal_percal_data iq_cal_single_sample;
  22 extern const struct hal_percal_data adc_gain_cal_multi_sample;
  23 extern const struct hal_percal_data adc_gain_cal_single_sample;
  24 extern const struct hal_percal_data adc_dc_cal_multi_sample;
  25 extern const struct hal_percal_data adc_dc_cal_single_sample;
  26 extern const struct hal_percal_data adc_init_dc_cal;
  27
  28 #define AR_PHY_CCA_MAX_GOOD_VALUE               -85
  29 #define AR_PHY_CCA_MAX_HIGH_VALUE               -62
  30 #define AR_PHY_CCA_MIN_BAD_VALUE                -140
  31 #define AR_PHY_CCA_FILTERWINDOW_LENGTH_INIT     3
  32 #define AR_PHY_CCA_FILTERWINDOW_LENGTH          5
  33
  34 #define NUM_NF_READINGS       6
  35 #define ATH9K_NF_CAL_HIST_MAX 5
  36
  37 struct ar5416IniArray {
  38         u32 *ia_array;
  39         u32 ia_rows;
  40         u32 ia_columns;
  41 };
  42
  43 #define INIT_INI_ARRAY(iniarray, array, rows, columns) do {     \
  44                 (iniarray)->ia_array = (u32 *)(array);          \
  45                 (iniarray)->ia_rows = (rows);                   \
  46                 (iniarray)->ia_columns = (columns);             \
  47         } while (0)
  48
  49 #define INI_RA(iniarray, row, column) \
  50         (((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])
  51
  52 #define INIT_CAL(_perCal) do {                          \
  53                 (_perCal)->calState = CAL_WAITING;      \
  54                 (_perCal)->calNext = NULL;              \
  55         } while (0)
  56
  57 #define INSERT_CAL(_ahp, _perCal)                                       \
  58         do {                                                            \
  59                 if ((_ahp)->cal_list_last == NULL) {                    \
  60                         (_ahp)->cal_list =                              \
  61                                 (_ahp)->cal_list_last = (_perCal);      \
  62                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  63                 } else {                                                \
  64                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  65                         (_ahp)->cal_list_last = (_perCal);              \
  66                         (_perCal)->calNext = (_ahp)->cal_list;  \
  67                 }                                                       \
  68         } while (0)
  69
  70 enum hal_cal_types {
  71         ADC_DC_INIT_CAL = 0x1,
  72         ADC_GAIN_CAL = 0x2,
  73         ADC_DC_CAL = 0x4,
  74         IQ_MISMATCH_CAL = 0x8
  75 };
  76
  77 enum hal_cal_state {
  78         CAL_INACTIVE,
  79         CAL_WAITING,
  80         CAL_RUNNING,
  81         CAL_DONE
  82 };
  83
  84 #define MIN_CAL_SAMPLES     1
  85 #define MAX_CAL_SAMPLES    64
  86 #define INIT_LOG_COUNT      5
  87 #define PER_MIN_LOG_COUNT   2
  88 #define PER_MAX_LOG_COUNT  10
  89
  90 struct hal_percal_data {
  91         enum hal_cal_types calType;
  92         u32 calNumSamples;
  93         u32 calCountMax;
  94         void (*calCollect) (struct ath_hw *);
  95         void (*calPostProc) (struct ath_hw *, u8);
  96 };
  97
  98 struct hal_cal_list {
  99         const struct hal_percal_data *calData;
 100         enum hal_cal_state calState;
 101         struct hal_cal_list *calNext;
 102 };
 103
 104 struct ath9k_nfcal_hist {
 105         int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
 106         u8 currIndex;
 107         int16_t privNF;
 108         u8 invalidNFcount;
 109 };
 110
 111 bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
 112 void ath9k_hw_start_nfcal(struct ath_hw *ah);
 113 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
 114 int16_t ath9k_hw_getnf(struct ath_hw *ah,
 115                        struct ath9k_channel *chan);
 116 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah);
 117 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
 118 bool ath9k_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
 119                         u8 rxchainmask, bool longcal,
 120                         bool *isCalDone);
 121 bool ath9k_hw_init_cal(struct ath_hw *ah,
 122                        struct ath9k_channel *chan);
 123
 124 #endif /* CALIB_H */