LXR linux/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
  27struct 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
  60enum 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
  73struct 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
  81struct ath9k_cal_list {
  82        const struct ath9k_percal_data *calData;
  83        enum ath9k_cal_state calState;
  84        struct ath9k_cal_list *calNext;
  85};
  86
  87struct 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
  95struct 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
 101bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
 102void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update);
 103void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
 104bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
 105void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
 106                                  struct ath9k_channel *chan);
 107void ath9k_hw_bstuck_nfcal(struct ath_hw *ah);
 108void ath9k_hw_reset_calibration(struct ath_hw *ah,
 109                                struct ath9k_cal_list *currCal);
 110s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);
 111
 112
 113#endif /* CALIB_H */
 114