LXR linux/drivers/net/wireless/ath/spectral

   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 */
 114