diff options
Diffstat (limited to 'drivers/net/wireless/realtek/rtlwifi/rtl8192se/rf.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtlwifi/rtl8192se/rf.c | 529 |
1 files changed, 529 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192se/rf.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192se/rf.c new file mode 100644 index 0000000..ea5b8ec --- /dev/null +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192se/rf.c @@ -0,0 +1,529 @@ +/****************************************************************************** + * + * Copyright(c) 2009-2012 Realtek Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * wlanfae <wlanfae@realtek.com> + * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, + * Hsinchu 300, Taiwan. + * + * Larry Finger <Larry.Finger@lwfinger.net> + * + *****************************************************************************/ + +#include "../wifi.h" +#include "reg.h" +#include "def.h" +#include "phy.h" +#include "rf.h" +#include "dm.h" + + +static void _rtl92s_get_powerbase(struct ieee80211_hw *hw, u8 *p_pwrlevel, + u8 chnl, u32 *ofdmbase, u32 *mcsbase, + u8 *p_final_pwridx) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_phy *rtlphy = &(rtlpriv->phy); + struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); + u32 pwrbase0, pwrbase1; + u8 legacy_pwrdiff = 0, ht20_pwrdiff = 0; + u8 i, pwrlevel[4]; + + for (i = 0; i < 2; i++) + pwrlevel[i] = p_pwrlevel[i]; + + /* We only care about the path A for legacy. */ + if (rtlefuse->eeprom_version < 2) { + pwrbase0 = pwrlevel[0] + (rtlefuse->legacy_httxpowerdiff & 0xf); + } else { + legacy_pwrdiff = rtlefuse->txpwr_legacyhtdiff + [RF90_PATH_A][chnl - 1]; + + /* For legacy OFDM, tx pwr always > HT OFDM pwr. + * We do not care Path B + * legacy OFDM pwr diff. NO BB register + * to notify HW. */ + pwrbase0 = pwrlevel[0] + legacy_pwrdiff; + } + + pwrbase0 = (pwrbase0 << 24) | (pwrbase0 << 16) | (pwrbase0 << 8) | + pwrbase0; + *ofdmbase = pwrbase0; + + /* MCS rates */ + if (rtlefuse->eeprom_version >= 2) { + /* Check HT20 to HT40 diff */ + if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20) { + for (i = 0; i < 2; i++) { + /* rf-A, rf-B */ + /* HT 20<->40 pwr diff */ + ht20_pwrdiff = rtlefuse->txpwr_ht20diff + [i][chnl - 1]; + + if (ht20_pwrdiff < 8) /* 0~+7 */ + pwrlevel[i] += ht20_pwrdiff; + else /* index8-15=-8~-1 */ + pwrlevel[i] -= (16 - ht20_pwrdiff); + } + } + } + + /* use index of rf-A */ + pwrbase1 = pwrlevel[0]; + pwrbase1 = (pwrbase1 << 24) | (pwrbase1 << 16) | (pwrbase1 << 8) | + pwrbase1; + *mcsbase = pwrbase1; + + /* The following is for Antenna + * diff from Ant-B to Ant-A */ + p_final_pwridx[0] = pwrlevel[0]; + p_final_pwridx[1] = pwrlevel[1]; + + switch (rtlefuse->eeprom_regulatory) { + case 3: + /* The following is for calculation + * of the power diff for Ant-B to Ant-A. */ + if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) { + p_final_pwridx[0] += rtlefuse->pwrgroup_ht40 + [RF90_PATH_A][ + chnl - 1]; + p_final_pwridx[1] += rtlefuse->pwrgroup_ht40 + [RF90_PATH_B][ + chnl - 1]; + } else { + p_final_pwridx[0] += rtlefuse->pwrgroup_ht20 + [RF90_PATH_A][ + chnl - 1]; + p_final_pwridx[1] += rtlefuse->pwrgroup_ht20 + [RF90_PATH_B][ + chnl - 1]; + } + break; + default: + break; + } + + if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) { + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "40MHz finalpwr_idx (A / B) = 0x%x / 0x%x\n", + p_final_pwridx[0], p_final_pwridx[1]); + } else { + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "20MHz finalpwr_idx (A / B) = 0x%x / 0x%x\n", + p_final_pwridx[0], p_final_pwridx[1]); + } +} + +static void _rtl92s_set_antennadiff(struct ieee80211_hw *hw, + u8 *p_final_pwridx) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); + struct rtl_phy *rtlphy = &(rtlpriv->phy); + s8 ant_pwr_diff = 0; + u32 u4reg_val = 0; + + if (rtlphy->rf_type == RF_2T2R) { + ant_pwr_diff = p_final_pwridx[1] - p_final_pwridx[0]; + + /* range is from 7~-8, + * index = 0x0~0xf */ + if (ant_pwr_diff > 7) + ant_pwr_diff = 7; + if (ant_pwr_diff < -8) + ant_pwr_diff = -8; + + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "Antenna Diff from RF-B to RF-A = %d (0x%x)\n", + ant_pwr_diff, ant_pwr_diff & 0xf); + + ant_pwr_diff &= 0xf; + } + + /* Antenna TX power difference */ + rtlefuse->antenna_txpwdiff[2] = 0;/* RF-D, don't care */ + rtlefuse->antenna_txpwdiff[1] = 0;/* RF-C, don't care */ + rtlefuse->antenna_txpwdiff[0] = (u8)(ant_pwr_diff); /* RF-B */ + + u4reg_val = rtlefuse->antenna_txpwdiff[2] << 8 | + rtlefuse->antenna_txpwdiff[1] << 4 | + rtlefuse->antenna_txpwdiff[0]; + + rtl_set_bbreg(hw, RFPGA0_TXGAINSTAGE, (BXBTXAGC | BXCTXAGC | BXDTXAGC), + u4reg_val); + + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, "Write BCD-Diff(0x%x) = 0x%x\n", + RFPGA0_TXGAINSTAGE, u4reg_val); +} + +static void _rtl92s_get_txpower_writeval_byregulatory(struct ieee80211_hw *hw, + u8 chnl, u8 index, + u32 pwrbase0, + u32 pwrbase1, + u32 *p_outwrite_val) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_phy *rtlphy = &(rtlpriv->phy); + struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); + u8 i, chnlgroup, pwrdiff_limit[4]; + u32 writeval, customer_limit; + + /* Index 0 & 1= legacy OFDM, 2-5=HT_MCS rate */ + switch (rtlefuse->eeprom_regulatory) { + case 0: + /* Realtek better performance increase power diff + * defined by Realtek for large power */ + chnlgroup = 0; + + writeval = rtlphy->mcs_offset[chnlgroup][index] + + ((index < 2) ? pwrbase0 : pwrbase1); + + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "RTK better performance, writeval = 0x%x\n", writeval); + break; + case 1: + /* Realtek regulatory increase power diff defined + * by Realtek for regulatory */ + if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) { + writeval = ((index < 2) ? pwrbase0 : pwrbase1); + + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "Realtek regulatory, 40MHz, writeval = 0x%x\n", + writeval); + } else { + chnlgroup = 0; + + if (rtlphy->pwrgroup_cnt >= 3) { + if (chnl <= 3) + chnlgroup = 0; + else if (chnl >= 4 && chnl <= 8) + chnlgroup = 1; + else if (chnl > 8) + chnlgroup = 2; + if (rtlphy->pwrgroup_cnt == 4) + chnlgroup++; + } + + writeval = rtlphy->mcs_offset[chnlgroup][index] + + ((index < 2) ? + pwrbase0 : pwrbase1); + + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "Realtek regulatory, 20MHz, writeval = 0x%x\n", + writeval); + } + break; + case 2: + /* Better regulatory don't increase any power diff */ + writeval = ((index < 2) ? pwrbase0 : pwrbase1); + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "Better regulatory, writeval = 0x%x\n", writeval); + break; + case 3: + /* Customer defined power diff. increase power diff + defined by customer. */ + chnlgroup = 0; + + if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20_40) { + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "customer's limit, 40MHz = 0x%x\n", + rtlefuse->pwrgroup_ht40 + [RF90_PATH_A][chnl - 1]); + } else { + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "customer's limit, 20MHz = 0x%x\n", + rtlefuse->pwrgroup_ht20 + [RF90_PATH_A][chnl - 1]); + } + + for (i = 0; i < 4; i++) { + pwrdiff_limit[i] = (u8)((rtlphy->mcs_offset + [chnlgroup][index] & (0x7f << (i * 8))) + >> (i * 8)); + + if (rtlphy->current_chan_bw == + HT_CHANNEL_WIDTH_20_40) { + if (pwrdiff_limit[i] > + rtlefuse->pwrgroup_ht40 + [RF90_PATH_A][chnl - 1]) { + pwrdiff_limit[i] = + rtlefuse->pwrgroup_ht40 + [RF90_PATH_A][chnl - 1]; + } + } else { + if (pwrdiff_limit[i] > + rtlefuse->pwrgroup_ht20 + [RF90_PATH_A][chnl - 1]) { + pwrdiff_limit[i] = + rtlefuse->pwrgroup_ht20 + [RF90_PATH_A][chnl - 1]; + } + } + } + + customer_limit = (pwrdiff_limit[3] << 24) | + (pwrdiff_limit[2] << 16) | + (pwrdiff_limit[1] << 8) | + (pwrdiff_limit[0]); + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "Customer's limit = 0x%x\n", customer_limit); + + writeval = customer_limit + ((index < 2) ? + pwrbase0 : pwrbase1); + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "Customer, writeval = 0x%x\n", writeval); + break; + default: + chnlgroup = 0; + writeval = rtlphy->mcs_offset[chnlgroup][index] + + ((index < 2) ? pwrbase0 : pwrbase1); + RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD, + "RTK better performance, writeval = 0x%x\n", writeval); + break; + } + + if (rtlpriv->dm.dynamic_txhighpower_lvl == TX_HIGH_PWR_LEVEL_LEVEL1) + writeval = 0x10101010; + else if (rtlpriv->dm.dynamic_txhighpower_lvl == + TX_HIGH_PWR_LEVEL_LEVEL2) + writeval = 0x0; + + *p_outwrite_val = writeval; + +} + +static void _rtl92s_write_ofdm_powerreg(struct ieee80211_hw *hw, + u8 index, u32 val) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_phy *rtlphy = &(rtlpriv->phy); + struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); + u16 regoffset[6] = {0xe00, 0xe04, 0xe10, 0xe14, 0xe18, 0xe1c}; + u8 i, rfa_pwr[4]; + u8 rfa_lower_bound = 0, rfa_upper_bound = 0, rf_pwr_diff = 0; + u32 writeval = val; + + /* If path A and Path B coexist, we must limit Path A tx power. + * Protect Path B pwr over or under flow. We need to calculate + * upper and lower bound of path A tx power. */ + if (rtlphy->rf_type == RF_2T2R) { + rf_pwr_diff = rtlefuse->antenna_txpwdiff[0]; + + /* Diff=-8~-1 */ + if (rf_pwr_diff >= 8) { + /* Prevent underflow!! */ + rfa_lower_bound = 0x10 - rf_pwr_diff; + /* if (rf_pwr_diff >= 0) Diff = 0-7 */ + } else { + rfa_upper_bound = RF6052_MAX_TX_PWR - rf_pwr_diff; + } + } + + for (i = 0; i < 4; i++) { + rfa_pwr[i] = (u8)((writeval & (0x7f << (i * 8))) >> (i * 8)); + if (rfa_pwr[i] > RF6052_MAX_TX_PWR) + rfa_pwr[i] = RF6052_MAX_TX_PWR; + + /* If path A and Path B coexist, we must limit Path A tx power. + * Protect Path B pwr over or under flow. We need to calculate + * upper and lower bound of path A tx power. */ + if (rtlphy->rf_type == RF_2T2R) { + /* Diff=-8~-1 */ + if (rf_pwr_diff >= 8) { + /* Prevent underflow!! */ + if (rfa_pwr[i] < rfa_lower_bound) + rfa_pwr[i] = rfa_lower_bound; + /* Diff = 0-7 */ + } else if (rf_pwr_diff >= 1) { + /* Prevent overflow */ + if (rfa_pwr[i] > rfa_upper_bound) + rfa_pwr[i] = rfa_upper_bound; + } + } + + } + + writeval = (rfa_pwr[3] << 24) | (rfa_pwr[2] << 16) | (rfa_pwr[1] << 8) | + rfa_pwr[0]; + + rtl_set_bbreg(hw, regoffset[index], 0x7f7f7f7f, writeval); +} + +void rtl92s_phy_rf6052_set_ofdmtxpower(struct ieee80211_hw *hw, + u8 *p_pwrlevel, u8 chnl) +{ + u32 writeval, pwrbase0, pwrbase1; + u8 index = 0; + u8 finalpwr_idx[4]; + + _rtl92s_get_powerbase(hw, p_pwrlevel, chnl, &pwrbase0, &pwrbase1, + &finalpwr_idx[0]); + _rtl92s_set_antennadiff(hw, &finalpwr_idx[0]); + + for (index = 0; index < 6; index++) { + _rtl92s_get_txpower_writeval_byregulatory(hw, chnl, index, + pwrbase0, pwrbase1, &writeval); + + _rtl92s_write_ofdm_powerreg(hw, index, writeval); + } +} + +void rtl92s_phy_rf6052_set_ccktxpower(struct ieee80211_hw *hw, u8 pwrlevel) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); + struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); + u32 txagc = 0; + bool dont_inc_cck_or_turboscanoff = false; + + if (((rtlefuse->eeprom_version >= 2) && + (rtlefuse->txpwr_safetyflag == 1)) || + ((rtlefuse->eeprom_version >= 2) && + (rtlefuse->eeprom_regulatory != 0))) + dont_inc_cck_or_turboscanoff = true; + + if (mac->act_scanning) { + txagc = 0x3f; + if (dont_inc_cck_or_turboscanoff) + txagc = pwrlevel; + } else { + txagc = pwrlevel; + + if (rtlpriv->dm.dynamic_txhighpower_lvl == + TX_HIGH_PWR_LEVEL_LEVEL1) + txagc = 0x10; + else if (rtlpriv->dm.dynamic_txhighpower_lvl == + TX_HIGH_PWR_LEVEL_LEVEL2) + txagc = 0x0; + } + + if (txagc > RF6052_MAX_TX_PWR) + txagc = RF6052_MAX_TX_PWR; + + rtl_set_bbreg(hw, RTXAGC_CCK_MCS32, BTX_AGCRATECCK, txagc); + +} + +bool rtl92s_phy_rf6052_config(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_phy *rtlphy = &(rtlpriv->phy); + u32 u4reg_val = 0; + u8 rfpath; + bool rtstatus = true; + struct bb_reg_def *pphyreg; + + /* Initialize RF */ + for (rfpath = 0; rfpath < rtlphy->num_total_rfpath; rfpath++) { + + pphyreg = &rtlphy->phyreg_def[rfpath]; + + /* Store original RFENV control type */ + switch (rfpath) { + case RF90_PATH_A: + case RF90_PATH_C: + u4reg_val = rtl92s_phy_query_bb_reg(hw, + pphyreg->rfintfs, + BRFSI_RFENV); + break; + case RF90_PATH_B: + case RF90_PATH_D: + u4reg_val = rtl92s_phy_query_bb_reg(hw, + pphyreg->rfintfs, + BRFSI_RFENV << 16); + break; + } + + /* Set RF_ENV enable */ + rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfe, + BRFSI_RFENV << 16, 0x1); + + /* Set RF_ENV output high */ + rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfo, BRFSI_RFENV, 0x1); + + /* Set bit number of Address and Data for RF register */ + rtl92s_phy_set_bb_reg(hw, pphyreg->rfhssi_para2, + B3WIRE_ADDRESSLENGTH, 0x0); + rtl92s_phy_set_bb_reg(hw, pphyreg->rfhssi_para2, + B3WIRE_DATALENGTH, 0x0); + + /* Initialize RF fom connfiguration file */ + switch (rfpath) { + case RF90_PATH_A: + rtstatus = rtl92s_phy_config_rf(hw, + (enum radio_path)rfpath); + break; + case RF90_PATH_B: + rtstatus = rtl92s_phy_config_rf(hw, + (enum radio_path)rfpath); + break; + case RF90_PATH_C: + break; + case RF90_PATH_D: + break; + } + + /* Restore RFENV control type */ + switch (rfpath) { + case RF90_PATH_A: + case RF90_PATH_C: + rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfs, BRFSI_RFENV, + u4reg_val); + break; + case RF90_PATH_B: + case RF90_PATH_D: + rtl92s_phy_set_bb_reg(hw, pphyreg->rfintfs, + BRFSI_RFENV << 16, + u4reg_val); + break; + } + + if (!rtstatus) { + pr_err("Radio[%d] Fail!!\n", rfpath); + goto fail; + } + + } + + return rtstatus; + +fail: + return rtstatus; +} + +void rtl92s_phy_rf6052_set_bandwidth(struct ieee80211_hw *hw, u8 bandwidth) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + struct rtl_phy *rtlphy = &(rtlpriv->phy); + + switch (bandwidth) { + case HT_CHANNEL_WIDTH_20: + rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] & + 0xfffff3ff) | 0x0400); + rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK, + rtlphy->rfreg_chnlval[0]); + break; + case HT_CHANNEL_WIDTH_20_40: + rtlphy->rfreg_chnlval[0] = ((rtlphy->rfreg_chnlval[0] & + 0xfffff3ff)); + rtl_set_rfreg(hw, RF90_PATH_A, RF_CHNLBW, RFREG_OFFSET_MASK, + rtlphy->rfreg_chnlval[0]); + break; + default: + pr_err("unknown bandwidth: %#X\n", bandwidth); + break; + } +} |