1/*
  2 * Copyright (c) 2013 Qualcomm Atheros, 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 SPECTRAL_COMMON_H
 18#define SPECTRAL_COMMON_H
 19
 20#define SPECTRAL_HT20_NUM_BINS		56
 21#define SPECTRAL_HT20_40_NUM_BINS		128
 22
 23/* TODO: could possibly be 512, but no samples this large
 24 * could be acquired so far.
 25 */
 26#define SPECTRAL_ATH10K_MAX_NUM_BINS		256
 27#define SPECTRAL_ATH11K_MAX_NUM_BINS		512
 28
 29/* FFT sample format given to userspace via debugfs.
 30 *
 31 * Please keep the type/length at the front position and change
 32 * other fields after adding another sample type
 33 *
 34 * TODO: this might need rework when switching to nl80211-based
 35 * interface.
 36 */
 37enum ath_fft_sample_type {
 38	ATH_FFT_SAMPLE_HT20 = 1,
 39	ATH_FFT_SAMPLE_HT20_40,
 40	ATH_FFT_SAMPLE_ATH10K,
 41	ATH_FFT_SAMPLE_ATH11K
 42};
 43
 44struct fft_sample_tlv {
 45	u8 type;	/* see ath_fft_sample */
 46	__be16 length;
 47	/* type dependent data follows */
 48} __packed;
 49
 50struct fft_sample_ht20 {
 51	struct fft_sample_tlv tlv;
 52
 53	u8 max_exp;
 54
 55	__be16 freq;
 56	s8 rssi;
 57	s8 noise;
 58
 59	__be16 max_magnitude;
 60	u8 max_index;
 61	u8 bitmap_weight;
 62
 63	__be64 tsf;
 64
 65	u8 data[SPECTRAL_HT20_NUM_BINS];
 66} __packed;
 67
 68struct fft_sample_ht20_40 {
 69	struct fft_sample_tlv tlv;
 70
 71	u8 channel_type;
 72	__be16 freq;
 73
 74	s8 lower_rssi;
 75	s8 upper_rssi;
 76
 77	__be64 tsf;
 78
 79	s8 lower_noise;
 80	s8 upper_noise;
 81
 82	__be16 lower_max_magnitude;
 83	__be16 upper_max_magnitude;
 84
 85	u8 lower_max_index;
 86	u8 upper_max_index;
 87
 88	u8 lower_bitmap_weight;
 89	u8 upper_bitmap_weight;
 90
 91	u8 max_exp;
 92
 93	u8 data[SPECTRAL_HT20_40_NUM_BINS];
 94} __packed;
 95
 96struct fft_sample_ath10k {
 97	struct fft_sample_tlv tlv;
 98	u8 chan_width_mhz;
 99	__be16 freq1;
100	__be16 freq2;
101	__be16 noise;
102	__be16 max_magnitude;
103	__be16 total_gain_db;
104	__be16 base_pwr_db;
105	__be64 tsf;
106	s8 max_index;
107	u8 rssi;
108	u8 relpwr_db;
109	u8 avgpwr_db;
110	u8 max_exp;
111
112	u8 data[0];
113} __packed;
114
115struct fft_sample_ath11k {
116	struct fft_sample_tlv tlv;
117	u8 chan_width_mhz;
118	s8 max_index;
119	u8 max_exp;
120	__be16 freq1;
121	__be16 freq2;
122	__be16 max_magnitude;
123	__be16 rssi;
124	__be32 tsf;
125	__be32 noise;
126
127	u8 data[0];
128} __packed;
129
130#endif /* SPECTRAL_COMMON_H */