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// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
*
* Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
*
******************************************************************************/
#include "odm_precomp.h"
static void odm_SetCrystalCap(void *pDM_VOID, u8 CrystalCap)
{
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
struct cfo_tracking *pCfoTrack = &pDM_Odm->DM_CfoTrack;
if (pCfoTrack->CrystalCap == CrystalCap)
return;
pCfoTrack->CrystalCap = CrystalCap;
/* 0x2C[23:18] = 0x2C[17:12] = CrystalCap */
CrystalCap = CrystalCap & 0x3F;
PHY_SetBBReg(
pDM_Odm->Adapter,
REG_MAC_PHY_CTRL,
0x00FFF000,
(CrystalCap | (CrystalCap << 6))
);
}
static u8 odm_GetDefaultCrytaltalCap(void *pDM_VOID)
{
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
struct adapter *Adapter = pDM_Odm->Adapter;
struct hal_com_data *pHalData = GET_HAL_DATA(Adapter);
return pHalData->CrystalCap & 0x3f;
}
static void odm_SetATCStatus(void *pDM_VOID, bool ATCStatus)
{
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
struct cfo_tracking *pCfoTrack = &pDM_Odm->DM_CfoTrack;
if (pCfoTrack->bATCStatus == ATCStatus)
return;
PHY_SetBBReg(
pDM_Odm->Adapter,
ODM_REG(BB_ATC, pDM_Odm),
ODM_BIT(BB_ATC, pDM_Odm),
ATCStatus
);
pCfoTrack->bATCStatus = ATCStatus;
}
static bool odm_GetATCStatus(void *pDM_VOID)
{
bool ATCStatus;
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
ATCStatus = (bool)PHY_QueryBBReg(
pDM_Odm->Adapter,
ODM_REG(BB_ATC, pDM_Odm),
ODM_BIT(BB_ATC, pDM_Odm)
);
return ATCStatus;
}
void ODM_CfoTrackingReset(void *pDM_VOID)
{
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
struct cfo_tracking *pCfoTrack = &pDM_Odm->DM_CfoTrack;
pCfoTrack->DefXCap = odm_GetDefaultCrytaltalCap(pDM_Odm);
pCfoTrack->bAdjust = true;
odm_SetCrystalCap(pDM_Odm, pCfoTrack->DefXCap);
odm_SetATCStatus(pDM_Odm, true);
}
void ODM_CfoTrackingInit(void *pDM_VOID)
{
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
struct cfo_tracking *pCfoTrack = &pDM_Odm->DM_CfoTrack;
pCfoTrack->DefXCap =
pCfoTrack->CrystalCap = odm_GetDefaultCrytaltalCap(pDM_Odm);
pCfoTrack->bATCStatus = odm_GetATCStatus(pDM_Odm);
pCfoTrack->bAdjust = true;
}
void ODM_CfoTracking(void *pDM_VOID)
{
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
struct cfo_tracking *pCfoTrack = &pDM_Odm->DM_CfoTrack;
int CFO_kHz_A, CFO_kHz_B, CFO_ave = 0;
int CFO_ave_diff;
int CrystalCap = (int)pCfoTrack->CrystalCap;
u8 Adjust_Xtal = 1;
/* 4 Support ability */
if (!(pDM_Odm->SupportAbility & ODM_BB_CFO_TRACKING)) {
return;
}
if (!pDM_Odm->bLinked || !pDM_Odm->bOneEntryOnly) {
/* 4 No link or more than one entry */
ODM_CfoTrackingReset(pDM_Odm);
} else {
/* 3 1. CFO Tracking */
/* 4 1.1 No new packet */
if (pCfoTrack->packetCount == pCfoTrack->packetCount_pre) {
return;
}
pCfoTrack->packetCount_pre = pCfoTrack->packetCount;
/* 4 1.2 Calculate CFO */
CFO_kHz_A = (int)(pCfoTrack->CFO_tail[0] * 3125) / 1280;
CFO_kHz_B = (int)(pCfoTrack->CFO_tail[1] * 3125) / 1280;
if (pDM_Odm->RFType < ODM_2T2R)
CFO_ave = CFO_kHz_A;
else
CFO_ave = (int)(CFO_kHz_A + CFO_kHz_B) >> 1;
/* 4 1.3 Avoid abnormal large CFO */
CFO_ave_diff =
(pCfoTrack->CFO_ave_pre >= CFO_ave) ?
(pCfoTrack->CFO_ave_pre-CFO_ave) :
(CFO_ave-pCfoTrack->CFO_ave_pre);
if (
CFO_ave_diff > 20 &&
pCfoTrack->largeCFOHit == 0 &&
!pCfoTrack->bAdjust
) {
pCfoTrack->largeCFOHit = 1;
return;
} else
pCfoTrack->largeCFOHit = 0;
pCfoTrack->CFO_ave_pre = CFO_ave;
/* 4 1.4 Dynamic Xtal threshold */
if (pCfoTrack->bAdjust == false) {
if (CFO_ave > CFO_TH_XTAL_HIGH || CFO_ave < (-CFO_TH_XTAL_HIGH))
pCfoTrack->bAdjust = true;
} else {
if (CFO_ave < CFO_TH_XTAL_LOW && CFO_ave > (-CFO_TH_XTAL_LOW))
pCfoTrack->bAdjust = false;
}
/* 4 1.5 BT case: Disable CFO tracking */
if (pDM_Odm->bBtEnabled) {
pCfoTrack->bAdjust = false;
odm_SetCrystalCap(pDM_Odm, pCfoTrack->DefXCap);
}
/* 4 1.6 Big jump */
if (pCfoTrack->bAdjust) {
if (CFO_ave > CFO_TH_XTAL_LOW)
Adjust_Xtal = Adjust_Xtal+((CFO_ave-CFO_TH_XTAL_LOW)>>2);
else if (CFO_ave < (-CFO_TH_XTAL_LOW))
Adjust_Xtal = Adjust_Xtal+((CFO_TH_XTAL_LOW-CFO_ave)>>2);
}
/* 4 1.7 Adjust Crystal Cap. */
if (pCfoTrack->bAdjust) {
if (CFO_ave > CFO_TH_XTAL_LOW)
CrystalCap = CrystalCap + Adjust_Xtal;
else if (CFO_ave < (-CFO_TH_XTAL_LOW))
CrystalCap = CrystalCap - Adjust_Xtal;
if (CrystalCap > 0x3f)
CrystalCap = 0x3f;
else if (CrystalCap < 0)
CrystalCap = 0;
odm_SetCrystalCap(pDM_Odm, (u8)CrystalCap);
}
/* 3 2. Dynamic ATC switch */
if (CFO_ave < CFO_TH_ATC && CFO_ave > -CFO_TH_ATC) {
odm_SetATCStatus(pDM_Odm, false);
} else {
odm_SetATCStatus(pDM_Odm, true);
}
}
}
void ODM_ParsingCFO(void *pDM_VOID, void *pPktinfo_VOID, s8 *pcfotail)
{
struct dm_odm_t *pDM_Odm = (struct dm_odm_t *)pDM_VOID;
struct odm_packet_info *pPktinfo = pPktinfo_VOID;
struct cfo_tracking *pCfoTrack = &pDM_Odm->DM_CfoTrack;
u8 i;
if (!(pDM_Odm->SupportAbility & ODM_BB_CFO_TRACKING))
return;
if (pPktinfo->station_id != 0) {
/* 3 Update CFO report for path-A & path-B */
/* Only paht-A and path-B have CFO tail and short CFO */
for (i = ODM_RF_PATH_A; i <= ODM_RF_PATH_B; i++)
pCfoTrack->CFO_tail[i] = (int)pcfotail[i];
/* 3 Update packet counter */
if (pCfoTrack->packetCount == 0xffffffff)
pCfoTrack->packetCount = 0;
else
pCfoTrack->packetCount++;
}
}
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