linux/drivers/net/wireless/ath/ath9k/common-spectral.c

/*
 * Copyright (c) 2013 Qualcomm Atheros, 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.
 */

#include <linux/relay.h>
#include <linux/random.h>
#include "ath9k.h"

static s8 fix_rssi_inv_only(u8 rssi_val)
{ … }

static void ath_debug_send_fft_sample(struct ath_spec_scan_priv *spec_priv,
				      struct fft_sample_tlv *fft_sample_tlv)
{ … }

ath_cmn_fft_idx_validator;

static int
ath_cmn_max_idx_verify_ht20_fft(u8 *sample_end, int bytes_read)
{ … }

static int
ath_cmn_max_idx_verify_ht20_40_fft(u8 *sample_end, int bytes_read)
{ … }

ath_cmn_fft_sample_handler;

static int
ath_cmn_process_ht20_fft(struct ath_rx_status *rs,
			struct ath_spec_scan_priv *spec_priv,
			u8 *sample_buf,
			u64 tsf, u16 freq, int chan_type)
{ … }

static int
ath_cmn_process_ht20_40_fft(struct ath_rx_status *rs,
			struct ath_spec_scan_priv *spec_priv,
			u8 *sample_buf,
			u64 tsf, u16 freq, int chan_type)
{ … }

static inline void
ath_cmn_copy_fft_frame(u8 *in, u8 *out, int sample_len, int sample_bytes)
{ … }

static int
ath_cmn_is_fft_buf_full(struct ath_spec_scan_priv *spec_priv)
{ … }

/* returns 1 if this was a spectral frame, even if not handled. */
int ath_cmn_process_fft(struct ath_spec_scan_priv *spec_priv, struct ieee80211_hdr *hdr,
		    struct ath_rx_status *rs, u64 tsf)
{ … }
EXPORT_SYMBOL(…);

/*********************/
/* spectral_scan_ctl */
/*********************/

static ssize_t read_file_spec_scan_ctl(struct file *file, char __user *user_buf,
				       size_t count, loff_t *ppos)
{ … }

void ath9k_cmn_spectral_scan_trigger(struct ath_common *common,
				 struct ath_spec_scan_priv *spec_priv)
{ … }
EXPORT_SYMBOL(…);

int ath9k_cmn_spectral_scan_config(struct ath_common *common,
			       struct ath_spec_scan_priv *spec_priv,
			       enum spectral_mode spectral_mode)
{ … }
EXPORT_SYMBOL(…);

static ssize_t write_file_spec_scan_ctl(struct file *file,
					const char __user *user_buf,
					size_t count, loff_t *ppos)
{ … }

static const struct file_operations fops_spec_scan_ctl = …;

/*************************/
/* spectral_short_repeat */
/*************************/

static ssize_t read_file_spectral_short_repeat(struct file *file,
					       char __user *user_buf,
					       size_t count, loff_t *ppos)
{ … }

static ssize_t write_file_spectral_short_repeat(struct file *file,
						const char __user *user_buf,
						size_t count, loff_t *ppos)
{ … }

static const struct file_operations fops_spectral_short_repeat = …;

/******************/
/* spectral_count */
/******************/

static ssize_t read_file_spectral_count(struct file *file,
					char __user *user_buf,
					size_t count, loff_t *ppos)
{ … }

static ssize_t write_file_spectral_count(struct file *file,
					 const char __user *user_buf,
					 size_t count, loff_t *ppos)
{ … }

static const struct file_operations fops_spectral_count = …;

/*******************/
/* spectral_period */
/*******************/

static ssize_t read_file_spectral_period(struct file *file,
					 char __user *user_buf,
					 size_t count, loff_t *ppos)
{ … }

static ssize_t write_file_spectral_period(struct file *file,
					  const char __user *user_buf,
					  size_t count, loff_t *ppos)
{ … }

static const struct file_operations fops_spectral_period = …;

/***********************/
/* spectral_fft_period */
/***********************/

static ssize_t read_file_spectral_fft_period(struct file *file,
					     char __user *user_buf,
					     size_t count, loff_t *ppos)
{ … }

static ssize_t write_file_spectral_fft_period(struct file *file,
					      const char __user *user_buf,
					      size_t count, loff_t *ppos)
{ … }

static const struct file_operations fops_spectral_fft_period = …;

/*******************/
/* Relay interface */
/*******************/

static struct dentry *create_buf_file_handler(const char *filename,
					      struct dentry *parent,
					      umode_t mode,
					      struct rchan_buf *buf,
					      int *is_global)
{ … }

static int remove_buf_file_handler(struct dentry *dentry)
{ … }

static const struct rchan_callbacks rfs_spec_scan_cb = …;

/*********************/
/* Debug Init/Deinit */
/*********************/

void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv)
{ … }
EXPORT_SYMBOL(…);

void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv,
				   struct dentry *debugfs_phy)
{ … }
EXPORT_SYMBOL(…);