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

   1 /*
   2  * Copyright (c) 2008-2011 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_FILTERWINDOW_LENGTH          5
  23
  24 #define NUM_NF_READINGS       6
  25 #define ATH9K_NF_CAL_HIST_MAX 5
  26
  27 struct ar5416IniArray {
  28         u32 *ia_array;
  29         u32 ia_rows;
  30         u32 ia_columns;
  31 };
  32
  33 #define INIT_INI_ARRAY(iniarray, array) do {    \
  34                 (iniarray)->ia_array = (u32 *)(array);          \
  35                 (iniarray)->ia_rows = ARRAY_SIZE(array);        \
  36                 (iniarray)->ia_columns = ARRAY_SIZE(array[0]);  \
  37         } while (0)
  38
  39 #define INI_RA(iniarray, row, column) \
  40         (((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])
  41
  42 #define INIT_CAL(_perCal) do {                          \
  43                 (_perCal)->calState = CAL_WAITING;      \
  44                 (_perCal)->calNext = NULL;              \
  45         } while (0)
  46
  47 #define INSERT_CAL(_ahp, _perCal)                                       \
  48         do {                                                            \
  49                 if ((_ahp)->cal_list_last == NULL) {                    \
  50                         (_ahp)->cal_list =                              \
  51                                 (_ahp)->cal_list_last = (_perCal);      \
  52                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  53                 } else {                                                \
  54                         ((_ahp)->cal_list_last)->calNext = (_perCal); \
  55                         (_ahp)->cal_list_last = (_perCal);              \
  56                         (_perCal)->calNext = (_ahp)->cal_list;  \
  57                 }                                                       \
  58         } while (0)
  59
  60 enum ath9k_cal_state {
  61         CAL_INACTIVE,
  62         CAL_WAITING,
  63         CAL_RUNNING,
  64         CAL_DONE
  65 };
  66
  67 #define MIN_CAL_SAMPLES     1
  68 #define MAX_CAL_SAMPLES    64
  69 #define INIT_LOG_COUNT      5
  70 #define PER_MIN_LOG_COUNT   2
  71 #define PER_MAX_LOG_COUNT  10
  72
  73 struct ath9k_percal_data {
  74         u32 calType;
  75         u32 calNumSamples;
  76         u32 calCountMax;
  77         void (*calCollect) (struct ath_hw *);
  78         void (*calPostProc) (struct ath_hw *, u8);
  79 };
  80
  81 struct ath9k_cal_list {
  82         const struct ath9k_percal_data *calData;
  83         enum ath9k_cal_state calState;
  84         struct ath9k_cal_list *calNext;
  85 };
  86
  87 struct ath9k_nfcal_hist {
  88         int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
  89         u8 currIndex;
  90         int16_t privNF;
  91         u8 invalidNFcount;
  92 };
  93
  94 #define MAX_PACAL_SKIPCOUNT 8
  95 struct ath9k_pacal_info{
  96         int32_t prev_offset;    /* Previous value of PA offset value */
  97         int8_t max_skipcount;   /* Max No. of times PACAL can be skipped */
  98         int8_t skipcount;       /* No. of times the PACAL to be skipped */
  99 };
 100
 101 bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
 102 void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update);
 103 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
 104 bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
 105 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
 106                                   struct ath9k_channel *chan);
 107 void ath9k_hw_bstuck_nfcal(struct ath_hw *ah);
 108 void ath9k_hw_reset_calibration(struct ath_hw *ah,
 109                                 struct ath9k_cal_list *currCal);
 110 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
 111
 112
 113 #endif /* CALIB_H */