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
 28/* FFT sample format given to userspace via debugfs.
 29 *
 30 * Please keep the type/length at the front position and change
 31 * other fields after adding another sample type
 32 *
 33 * TODO: this might need rework when switching to nl80211-based
 34 * interface.
 35 */
 36enum ath_fft_sample_type {
 37	ATH_FFT_SAMPLE_HT20 = 1,
 38	ATH_FFT_SAMPLE_HT20_40,
 39	ATH_FFT_SAMPLE_ATH10K,
 40};
 41
 42struct fft_sample_tlv {
 43	u8 type;	/* see ath_fft_sample */
 44	__be16 length;
 45	/* type dependent data follows */
 46} __packed;
 47
 48struct fft_sample_ht20 {
 49	struct fft_sample_tlv tlv;
 50
 51	u8 max_exp;
 52
 53	__be16 freq;
 54	s8 rssi;
 55	s8 noise;
 56
 57	__be16 max_magnitude;
 58	u8 max_index;
 59	u8 bitmap_weight;
 60
 61	__be64 tsf;
 62
 63	u8 data[SPECTRAL_HT20_NUM_BINS];
 64} __packed;
 65
 66struct fft_sample_ht20_40 {
 67	struct fft_sample_tlv tlv;
 68
 69	u8 channel_type;
 70	__be16 freq;
 71
 72	s8 lower_rssi;
 73	s8 upper_rssi;
 74
 75	__be64 tsf;
 76
 77	s8 lower_noise;
 78	s8 upper_noise;
 79
 80	__be16 lower_max_magnitude;
 81	__be16 upper_max_magnitude;
 82
 83	u8 lower_max_index;
 84	u8 upper_max_index;
 85
 86	u8 lower_bitmap_weight;
 87	u8 upper_bitmap_weight;
 88
 89	u8 max_exp;
 90
 91	u8 data[SPECTRAL_HT20_40_NUM_BINS];
 92} __packed;
 93
 94struct fft_sample_ath10k {
 95	struct fft_sample_tlv tlv;
 96	u8 chan_width_mhz;
 97	__be16 freq1;
 98	__be16 freq2;
 99	__be16 noise;
100	__be16 max_magnitude;
101	__be16 total_gain_db;
102	__be16 base_pwr_db;
103	__be64 tsf;
104	s8 max_index;
105	u8 rssi;
106	u8 relpwr_db;
107	u8 avgpwr_db;
108	u8 max_exp;
109
110	u8 data[0];
111} __packed;
112
113#endif /* SPECTRAL_COMMON_H */