diff options
Diffstat (limited to 'drivers/staging/rtl8723bs/hal/odm_CfoTracking.c')
| -rw-r--r-- | drivers/staging/rtl8723bs/hal/odm_CfoTracking.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/drivers/staging/rtl8723bs/hal/odm_CfoTracking.c b/drivers/staging/rtl8723bs/hal/odm_CfoTracking.c new file mode 100644 index 0000000000..928c58be6c --- /dev/null +++ b/drivers/staging/rtl8723bs/hal/odm_CfoTracking.c @@ -0,0 +1,211 @@ +// 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_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_ave = CFO_kHz_A; + + /* 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_parsing_cfo(void *dm_void, void *pkt_info_void, s8 *cfotail) +{ + struct dm_odm_t *dm_odm = (struct dm_odm_t *)dm_void; + struct odm_packet_info *pkt_info = pkt_info_void; + struct cfo_tracking *cfo_track = &dm_odm->DM_CfoTrack; + u8 i; + + if (!(dm_odm->SupportAbility & ODM_BB_CFO_TRACKING)) + return; + + if (pkt_info->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 = RF_PATH_A; i <= RF_PATH_B; i++) + cfo_track->CFO_tail[i] = (int)cfotail[i]; + + /* 3 Update packet counter */ + if (cfo_track->packetCount == 0xffffffff) + cfo_track->packetCount = 0; + else + cfo_track->packetCount++; + } +} |