2 * Copyright (c) 2008-2011 Atheros Communications Inc.
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.
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.
22 #define AR_PHY_CCA_FILTERWINDOW_LENGTH 5
24 /* Internal noise floor can vary by about 6db depending on the frequency */
25 #define ATH9K_NF_CAL_NOISE_THRESH 6
27 #define NUM_NF_READINGS 6
28 #define ATH9K_NF_CAL_HIST_MAX 5
30 struct ar5416IniArray {
36 #define INIT_INI_ARRAY(iniarray, array) do { \
37 (iniarray)->ia_array = (u32 *)(array); \
38 (iniarray)->ia_rows = ARRAY_SIZE(array); \
39 (iniarray)->ia_columns = ARRAY_SIZE(array[0]); \
42 #define INI_RA(iniarray, row, column) \
43 (((iniarray)->ia_array)[(row) * ((iniarray)->ia_columns) + (column)])
45 #define INIT_CAL(_perCal) do { \
46 (_perCal)->calState = CAL_WAITING; \
47 (_perCal)->calNext = NULL; \
50 #define INSERT_CAL(_ahp, _perCal) \
52 if ((_ahp)->cal_list_last == NULL) { \
54 (_ahp)->cal_list_last = (_perCal); \
55 ((_ahp)->cal_list_last)->calNext = (_perCal); \
57 ((_ahp)->cal_list_last)->calNext = (_perCal); \
58 (_ahp)->cal_list_last = (_perCal); \
59 (_perCal)->calNext = (_ahp)->cal_list; \
63 enum ath9k_cal_state {
70 #define MIN_CAL_SAMPLES 1
71 #define MAX_CAL_SAMPLES 64
72 #define INIT_LOG_COUNT 5
73 #define PER_MIN_LOG_COUNT 2
74 #define PER_MAX_LOG_COUNT 10
76 struct ath9k_percal_data {
80 void (*calCollect) (struct ath_hw *);
81 void (*calPostProc) (struct ath_hw *, u8);
84 struct ath9k_cal_list {
85 const struct ath9k_percal_data *calData;
86 enum ath9k_cal_state calState;
87 struct ath9k_cal_list *calNext;
90 struct ath9k_nfcal_hist {
91 int16_t nfCalBuffer[ATH9K_NF_CAL_HIST_MAX];
97 #define MAX_PACAL_SKIPCOUNT 8
98 struct ath9k_pacal_info{
99 int32_t prev_offset; /* Previous value of PA offset value */
100 int8_t max_skipcount; /* Max No. of times PACAL can be skipped */
101 int8_t skipcount; /* No. of times the PACAL to be skipped */
104 bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
105 void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update);
106 void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
107 bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
108 void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
109 struct ath9k_channel *chan);
110 void ath9k_hw_bstuck_nfcal(struct ath_hw *ah);
111 void ath9k_hw_reset_calibration(struct ath_hw *ah,
112 struct ath9k_cal_list *currCal);
113 s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan);