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/*
* Copyright (c) 2008-2009 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 "ath9k.h"
static inline u16 ath9k_hw_fbin2freq(u8 fbin, bool is2GHz)
{
if (fbin == AR5416_BCHAN_UNUSED)
return fbin;
return (u16) ((is2GHz) ? (2300 + fbin) : (4800 + 5 * fbin));
}
void ath9k_hw_analog_shift_rmw(struct ath_hw *ah, u32 reg, u32 mask,
u32 shift, u32 val)
{
u32 regVal;
regVal = REG_READ(ah, reg) & ~mask;
regVal |= (val << shift) & mask;
REG_WRITE(ah, reg, regVal);
if (ah->config.analog_shiftreg)
udelay(100);
return;
}
int16_t ath9k_hw_interpolate(u16 target, u16 srcLeft, u16 srcRight,
int16_t targetLeft, int16_t targetRight)
{
int16_t rv;
if (srcRight == srcLeft) {
rv = targetLeft;
} else {
rv = (int16_t) (((target - srcLeft) * targetRight +
(srcRight - target) * targetLeft) /
(srcRight - srcLeft));
}
return rv;
}
bool ath9k_hw_get_lower_upper_index(u8 target, u8 *pList, u16 listSize,
u16 *indexL, u16 *indexR)
{
u16 i;
if (target <= pList[0]) {
*indexL = *indexR = 0;
return true;
}
if (target >= pList[listSize - 1]) {
*indexL = *indexR = (u16) (listSize - 1);
return true;
}
for (i = 0; i < listSize - 1; i++) {
if (pList[i] == target) {
*indexL = *indexR = i;
return true;
}
if (target < pList[i + 1]) {
*indexL = i;
*indexR = (u16) (i + 1);
return false;
}
}
return false;
}
bool ath9k_hw_nvram_read(struct ath_hw *ah, u32 off, u16 *data)
{
struct ath_softc *sc = ah->ah_sc;
return sc->bus_ops->eeprom_read(ah, off, data);
}
void ath9k_hw_fill_vpd_table(u8 pwrMin, u8 pwrMax, u8 *pPwrList,
u8 *pVpdList, u16 numIntercepts,
u8 *pRetVpdList)
{
u16 i, k;
u8 currPwr = pwrMin;
u16 idxL = 0, idxR = 0;
for (i = 0; i <= (pwrMax - pwrMin) / 2; i++) {
ath9k_hw_get_lower_upper_index(currPwr, pPwrList,
numIntercepts, &(idxL),
&(idxR));
if (idxR < 1)
idxR = 1;
if (idxL == numIntercepts - 1)
idxL = (u16) (numIntercepts - 2);
if (pPwrList[idxL] == pPwrList[idxR])
k = pVpdList[idxL];
else
k = (u16)(((currPwr - pPwrList[idxL]) * pVpdList[idxR] +
(pPwrList[idxR] - currPwr) * pVpdList[idxL]) /
(pPwrList[idxR] - pPwrList[idxL]));
pRetVpdList[i] = (u8) k;
currPwr += 2;
}
}
void ath9k_hw_get_legacy_target_powers(struct ath_hw *ah,
struct ath9k_channel *chan,
struct cal_target_power_leg *powInfo,
u16 numChannels,
struct cal_target_power_leg *pNewPower,
u16 numRates, bool isExtTarget)
{
struct chan_centers centers;
u16 clo, chi;
int i;
int matchIndex = -1, lowIndex = -1;
u16 freq;
ath9k_hw_get_channel_centers(ah, chan, ¢ers);
freq = (isExtTarget) ? centers.ext_center : centers.ctl_center;
if (freq <= ath9k_hw_fbin2freq(powInfo[0].bChannel,
IS_CHAN_2GHZ(chan))) {
matchIndex = 0;
} else {
for (i = 0; (i < numChannels) &&
(powInfo[i].bChannel != AR5416_BCHAN_UNUSED); i++) {
if (freq == ath9k_hw_fbin2freq(powInfo[i].bChannel,
IS_CHAN_2GHZ(chan))) {
matchIndex = i;
break;
} else if ((freq < ath9k_hw_fbin2freq(powInfo[i].bChannel,
IS_CHAN_2GHZ(chan))) &&
(freq > ath9k_hw_fbin2freq(powInfo[i - 1].bChannel,
IS_CHAN_2GHZ(chan)))) {
lowIndex = i - 1;
break;
}
}
if ((matchIndex == -1) && (lowIndex == -1))
matchIndex = i - 1;
}
if (matchIndex != -1) {
*pNewPower = powInfo[matchIndex];
} else {
clo = ath9k_hw_fbin2freq(powInfo[lowIndex].bChannel,
IS_CHAN_2GHZ(chan));
chi = ath9k_hw_fbin2freq(powInfo[lowIndex + 1].bChannel,
IS_CHAN_2GHZ(chan));
for (i = 0; i < numRates; i++) {
pNewPower->tPow2x[i] =
(u8)ath9k_hw_interpolate(freq, clo, chi,
powInfo[lowIndex].tPow2x[i],
powInfo[lowIndex + 1].tPow2x[i]);
}
}
}
void ath9k_hw_get_target_powers(struct ath_hw *ah,
struct ath9k_channel *chan,
struct cal_target_power_ht *powInfo,
u16 numChannels,
struct cal_target_power_ht *pNewPower,
u16 numRates, bool isHt40Target)
{
struct chan_centers centers;
u16 clo, chi;
int i;
int matchIndex = -1, lowIndex = -1;
u16 freq;
ath9k_hw_get_channel_centers(ah, chan, ¢ers);
freq = isHt40Target ? centers.synth_center : centers.ctl_center;
if (freq <= ath9k_hw_fbin2freq(powInfo[0].bChannel, IS_CHAN_2GHZ(chan))) {
matchIndex = 0;
} else {
for (i = 0; (i < numChannels) &&
(powInfo[i].bChannel != AR5416_BCHAN_UNUSED); i++) {
if (freq == ath9k_hw_fbin2freq(powInfo[i].bChannel,
IS_CHAN_2GHZ(chan))) {
matchIndex = i;
break;
} else
if ((freq < ath9k_hw_fbin2freq(powInfo[i].bChannel,
IS_CHAN_2GHZ(chan))) &&
(freq > ath9k_hw_fbin2freq(powInfo[i - 1].bChannel,
IS_CHAN_2GHZ(chan)))) {
lowIndex = i - 1;
break;
}
}
if ((matchIndex == -1) && (lowIndex == -1))
matchIndex = i - 1;
}
if (matchIndex != -1) {
*pNewPower = powInfo[matchIndex];
} else {
clo = ath9k_hw_fbin2freq(powInfo[lowIndex].bChannel,
IS_CHAN_2GHZ(chan));
chi = ath9k_hw_fbin2freq(powInfo[lowIndex + 1].bChannel,
IS_CHAN_2GHZ(chan));
for (i = 0; i < numRates; i++) {
pNewPower->tPow2x[i] = (u8)ath9k_hw_interpolate(freq,
clo, chi,
powInfo[lowIndex].tPow2x[i],
powInfo[lowIndex + 1].tPow2x[i]);
}
}
}
u16 ath9k_hw_get_max_edge_power(u16 freq, struct cal_ctl_edges *pRdEdgesPower,
bool is2GHz, int num_band_edges)
{
u16 twiceMaxEdgePower = AR5416_MAX_RATE_POWER;
int i;
for (i = 0; (i < num_band_edges) &&
(pRdEdgesPower[i].bChannel != AR5416_BCHAN_UNUSED); i++) {
if (freq == ath9k_hw_fbin2freq(pRdEdgesPower[i].bChannel, is2GHz)) {
twiceMaxEdgePower = pRdEdgesPower[i].tPower;
break;
} else if ((i > 0) &&
(freq < ath9k_hw_fbin2freq(pRdEdgesPower[i].bChannel,
is2GHz))) {
if (ath9k_hw_fbin2freq(pRdEdgesPower[i - 1].bChannel,
is2GHz) < freq &&
pRdEdgesPower[i - 1].flag) {
twiceMaxEdgePower =
pRdEdgesPower[i - 1].tPower;
}
break;
}
}
return twiceMaxEdgePower;
}
int ath9k_hw_eeprom_init(struct ath_hw *ah)
{
int status;
if (AR_SREV_9287(ah)) {
ah->eep_map = EEP_MAP_AR9287;
ah->eep_ops = &eep_AR9287_ops;
} else if (AR_SREV_9285(ah) || AR_SREV_9271(ah)) {
ah->eep_map = EEP_MAP_4KBITS;
ah->eep_ops = &eep_4k_ops;
} else {
ah->eep_map = EEP_MAP_DEFAULT;
ah->eep_ops = &eep_def_ops;
}
if (!ah->eep_ops->fill_eeprom(ah))
return -EIO;
status = ah->eep_ops->check_eeprom(ah);
return status;
}
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