/*
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* Copyright (c) 2008-2011 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef CALIB_H
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#define CALIB_H
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#include "hw.h"
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#define AR_PHY_CCA_FILTERWINDOW_LENGTH 5
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/* Internal noise floor can vary by about 6db depending on the frequency */
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#define ATH9K_NF_CAL_NOISE_THRESH 6
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#define NUM_NF_READINGS 6
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#define ATH9K_NF_CAL_HIST_MAX 5
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struct ar5416IniArray {
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u32 *ia_array;
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u32 ia_rows;
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u32 ia_columns;
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};
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#define STATIC_INI_ARRAY(array) { \
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.ia_array = (u32 *)(array), \
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.ia_rows = ARRAY_SIZE(array), \
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.ia_columns = ARRAY_SIZE(array[0]), \
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}
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#define INIT_INI_ARRAY(iniarray, array) do { \
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(iniarray)->ia_array = (u32 *)(array); \
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(iniarray)->ia_rows = ARRAY_SIZE(array); \
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(iniarray)->ia_columns = ARRAY_SIZE(array[0]); \
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} while (0)
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#define INI_RA(iniarray, row, column) \
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(((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])
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#define INIT_CAL(_perCal) do { \
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(_perCal)->calState = CAL_WAITING; \
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(_perCal)->calNext = NULL; \
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} while (0)
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#define INSERT_CAL(_ahp, _perCal) \
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do { \
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if ((_ahp)->cal_list_last == NULL) { \
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(_ahp)->cal_list = \
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(_ahp)->cal_list_last = (_perCal); \
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((_ahp)->cal_list_last)->calNext = (_perCal); \
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} else { \
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((_ahp)->cal_list_last)->calNext = (_perCal); \
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(_ahp)->cal_list_last = (_perCal); \
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(_perCal)->calNext = (_ahp)->cal_list; \
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} \
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} while (0)
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enum ath9k_cal_state {
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CAL_INACTIVE,
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CAL_WAITING,
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CAL_RUNNING,
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CAL_DONE
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};
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#define MIN_CAL_SAMPLES 1
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#define MAX_CAL_SAMPLES 64
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#define INIT_LOG_COUNT 5
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#define PER_MIN_LOG_COUNT 2
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#define PER_MAX_LOG_COUNT 10
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struct ath9k_percal_data {
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u32 calType;
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u32 calNumSamples;
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u32 calCountMax;
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void (*calCollect) (struct ath_hw *);
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void (*calPostProc) (struct ath_hw *, u8);
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};
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struct ath9k_cal_list {
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const struct ath9k_percal_data *calData;
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enum ath9k_cal_state calState;
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struct ath9k_cal_list *calNext;
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};
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struct ath9k_nfcal_hist {
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int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
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u8 currIndex;
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int16_t privNF;
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u8 invalidNFcount;
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};
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#define MAX_PACAL_SKIPCOUNT 8
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struct ath9k_pacal_info{
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int32_t prev_offset; /* Previous value of PA offset value */
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int8_t max_skipcount; /* Max No. of times PACAL can be skipped */
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int8_t skipcount; /* No. of times the PACAL to be skipped */
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};
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bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
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void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update);
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int ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
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bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
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void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
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struct ath9k_channel *chan);
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void ath9k_hw_bstuck_nfcal(struct ath_hw *ah);
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void ath9k_hw_reset_calibration(struct ath_hw *ah,
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struct ath9k_cal_list *currCal);
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s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan,
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s16 nf);
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#endif /* CALIB_H */
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