linux/drivers/net/wireless/broadcom/b43/lo.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*

  Broadcom B43 wireless driver

  G PHY LO (LocalOscillator) Measuring and Control routines

  Copyright (c) 2005 Martin Langer <[email protected]>,
  Copyright (c) 2005, 2006 Stefano Brivio <[email protected]>
  Copyright (c) 2005-2007 Michael Buesch <[email protected]>
  Copyright (c) 2005, 2006 Danny van Dyk <[email protected]>
  Copyright (c) 2005, 2006 Andreas Jaggi <[email protected]>


*/

#include "b43.h"
#include "lo.h"
#include "phy_g.h"
#include "main.h"

#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/slab.h>


static struct b43_lo_calib *b43_find_lo_calib(struct b43_txpower_lo_control *lo,
					      const struct b43_bbatt *bbatt,
					       const struct b43_rfatt *rfatt)
{ … }

/* Write the LocalOscillator Control (adjust) value-pair. */
static void b43_lo_write(struct b43_wldev *dev, struct b43_loctl *control)
{ … }

static u16 lo_measure_feedthrough(struct b43_wldev *dev,
				  u16 lna, u16 pga, u16 trsw_rx)
{ … }

/* TXCTL Register and Value Table.
 * Returns the "TXCTL Register".
 * "value" is the "TXCTL Value".
 * "pad_mix_gain" is the PAD Mixer Gain.
 */
static u16 lo_txctl_register_table(struct b43_wldev *dev,
				   u16 *value, u16 *pad_mix_gain)
{ … }

static void lo_measure_txctl_values(struct b43_wldev *dev)
{ … }

static void lo_read_power_vector(struct b43_wldev *dev)
{ … }

/* 802.11/LO/GPHY/MeasuringGains */
static void lo_measure_gain_values(struct b43_wldev *dev,
				   s16 max_rx_gain, int use_trsw_rx)
{ … }

struct lo_g_saved_values { … };

static void lo_measure_setup(struct b43_wldev *dev,
			     struct lo_g_saved_values *sav)
{ … }

static void lo_measure_restore(struct b43_wldev *dev,
			       struct lo_g_saved_values *sav)
{ … }

struct b43_lo_g_statemachine { … };

/* Loop over each possible value in this state. */
static int lo_probe_possible_loctls(struct b43_wldev *dev,
				    struct b43_loctl *probe_loctl,
				    struct b43_lo_g_statemachine *d)
{ … }

static void lo_probe_loctls_statemachine(struct b43_wldev *dev,
					 struct b43_loctl *loctl,
					 int *max_rx_gain)
{ … }

static
struct b43_lo_calib *b43_calibrate_lo_setting(struct b43_wldev *dev,
					      const struct b43_bbatt *bbatt,
					      const struct b43_rfatt *rfatt)
{ … }

/* Get a calibrated LO setting for the given attenuation values.
 * Might return a NULL pointer under OOM! */
static
struct b43_lo_calib *b43_get_calib_lo_settings(struct b43_wldev *dev,
					       const struct b43_bbatt *bbatt,
					       const struct b43_rfatt *rfatt)
{ … }

void b43_gphy_dc_lt_init(struct b43_wldev *dev, bool update_all)
{ … }

/* Fixup the RF attenuation value for the case where we are
 * using the PAD mixer. */
static inline void b43_lo_fixup_rfatt(struct b43_rfatt *rf)
{ … }

void b43_lo_g_adjust(struct b43_wldev *dev)
{ … }

void b43_lo_g_adjust_to(struct b43_wldev *dev,
			u16 rfatt, u16 bbatt, u16 tx_control)
{ … }

/* Periodic LO maintenance work */
void b43_lo_g_maintenance_work(struct b43_wldev *dev)
{ … }

void b43_lo_g_cleanup(struct b43_wldev *dev)
{ … }

/* LO Initialization */
void b43_lo_g_init(struct b43_wldev *dev)
{ … }