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