linux/drivers/net/wireless/ath/ath9k/ar9003_calib.c

/*
 * Copyright (c) 2010-2011 Atheros Communications 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 "hw.h"
#include "hw-ops.h"
#include "ar9003_phy.h"
#include "ar9003_rtt.h"
#include "ar9003_mci.h"

#define MAX_MEASUREMENT …
#define MAX_MAG_DELTA …
#define MAX_PHS_DELTA …
#define MAXIQCAL …

struct coeff { … };

enum ar9003_cal_types { … };

static void ar9003_hw_setup_calibration(struct ath_hw *ah,
					struct ath9k_cal_list *currCal)
{ … }

/*
 * Generic calibration routine.
 * Recalibrate the lower PHY chips to account for temperature/environment
 * changes.
 */
static bool ar9003_hw_per_calibration(struct ath_hw *ah,
				      struct ath9k_channel *ichan,
				      u8 rxchainmask,
				      struct ath9k_cal_list *currCal)
{ … }

static int ar9003_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
			       u8 rxchainmask, bool longcal)
{ … }

static void ar9003_hw_iqcal_collect(struct ath_hw *ah)
{ … }

static void ar9003_hw_iqcalibrate(struct ath_hw *ah, u8 numChains)
{ … }

static const struct ath9k_percal_data iq_cal_single_sample = …;

static void ar9003_hw_init_cal_settings(struct ath_hw *ah)
{ … }

#define OFF_UPPER_LT …
#define OFF_LOWER_LT …

static bool ar9003_hw_dynamic_osdac_selection(struct ath_hw *ah,
					      bool txiqcal_done)
{ … }

/*
 * solve 4x4 linear equation used in loopback iq cal.
 */
static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah,
				   s32 sin_2phi_1,
				   s32 cos_2phi_1,
				   s32 sin_2phi_2,
				   s32 cos_2phi_2,
				   s32 mag_a0_d0,
				   s32 phs_a0_d0,
				   s32 mag_a1_d0,
				   s32 phs_a1_d0,
				   s32 solved_eq[])
{ … }

static s32 ar9003_hw_find_mag_approx(struct ath_hw *ah, s32 in_re, s32 in_im)
{ … }

#define DELPT …

static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
				   s32 chain_idx,
				   const s32 iq_res[],
				   s32 iqc_coeff[])
{ … }

static void ar9003_hw_detect_outlier(int mp_coeff[][MAXIQCAL],
				     int nmeasurement,
				     int max_delta)
{ … }

static void ar9003_hw_tx_iq_cal_outlier_detection(struct ath_hw *ah,
						  struct coeff *coeff,
						  bool is_reusable)
{ … }

static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah)
{ … }

static void __ar955x_tx_iq_cal_sort(struct ath_hw *ah,
				    struct coeff *coeff,
				    int i, int nmeasurement)
{ … }

static bool ar955x_tx_iq_cal_median(struct ath_hw *ah,
				    struct coeff *coeff,
				    int iqcal_idx,
				    int nmeasurement)
{ … }

static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah,
					  int iqcal_idx,
					  bool is_reusable)
{ … }

static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah)
{ … }

static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
{ … }

static void ar9003_hw_do_pcoem_manual_peak_cal(struct ath_hw *ah,
					       struct ath9k_channel *chan,
					       bool run_rtt_cal)
{ … }

static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
{ … }

static void ar9003_hw_init_cal_common(struct ath_hw *ah)
{ … }

static bool ar9003_hw_init_cal_pcoem(struct ath_hw *ah,
				     struct ath9k_channel *chan)
{ … }

static bool do_ar9003_agc_cal(struct ath_hw *ah)
{ … }

static bool ar9003_hw_init_cal_soc(struct ath_hw *ah,
				   struct ath9k_channel *chan)
{ … }

void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
{ … }