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path: root/drivers/net/wireless/rtlwifi/rtl8192cu/rf.c
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/******************************************************************************
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * 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 bool _rtl92c_phy_rf6052_config_parafile(struct ieee80211_hw *hw);

void rtl92cu_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:
		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
			 "unknown bandwidth: %#X\n", bandwidth);
		break;
	}
}

void rtl92cu_phy_rf6052_set_cck_txpower(struct ieee80211_hw *hw,
					u8 *ppowerlevel)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
	u32 tx_agc[2] = { 0, 0 }, tmpval = 0;
	bool turbo_scanoff = false;
	u8 idx1, idx2;
	u8 *ptr;

	if (rtlhal->interface == INTF_PCI) {
		if (rtlefuse->eeprom_regulatory != 0)
			turbo_scanoff = true;
	} else {
		if ((rtlefuse->eeprom_regulatory != 0) ||
		    (rtlefuse->external_pa))
			turbo_scanoff = true;
	}
	if (mac->act_scanning) {
		tx_agc[RF90_PATH_A] = 0x3f3f3f3f;
		tx_agc[RF90_PATH_B] = 0x3f3f3f3f;
		if (turbo_scanoff) {
			for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
				tx_agc[idx1] = ppowerlevel[idx1] |
				    (ppowerlevel[idx1] << 8) |
				    (ppowerlevel[idx1] << 16) |
				    (ppowerlevel[idx1] << 24);
				if (rtlhal->interface == INTF_USB) {
					if (tx_agc[idx1] > 0x20 &&
					    rtlefuse->external_pa)
						tx_agc[idx1] = 0x20;
				}
			}
		}
	} else {
		if (rtlpriv->dm.dynamic_txhighpower_lvl ==
		    TXHIGHPWRLEVEL_LEVEL1) {
			tx_agc[RF90_PATH_A] = 0x10101010;
			tx_agc[RF90_PATH_B] = 0x10101010;
		} else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
			   TXHIGHPWRLEVEL_LEVEL2) {
			tx_agc[RF90_PATH_A] = 0x00000000;
			tx_agc[RF90_PATH_B] = 0x00000000;
		} else{
			for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
				tx_agc[idx1] = ppowerlevel[idx1] |
				    (ppowerlevel[idx1] << 8) |
				    (ppowerlevel[idx1] << 16) |
				    (ppowerlevel[idx1] << 24);
			}
			if (rtlefuse->eeprom_regulatory == 0) {
				tmpval = (rtlphy->mcs_offset[0][6]) +
					(rtlphy->mcs_offset[0][7] <<  8);
				tx_agc[RF90_PATH_A] += tmpval;
				tmpval = (rtlphy->mcs_offset[0][14]) +
					(rtlphy->mcs_offset[0][15] << 24);
				tx_agc[RF90_PATH_B] += tmpval;
			}
		}
	}
	for (idx1 = RF90_PATH_A; idx1 <= RF90_PATH_B; idx1++) {
		ptr = (u8 *) (&(tx_agc[idx1]));
		for (idx2 = 0; idx2 < 4; idx2++) {
			if (*ptr > RF6052_MAX_TX_PWR)
				*ptr = RF6052_MAX_TX_PWR;
			ptr++;
		}
	}
	tmpval = tx_agc[RF90_PATH_A] & 0xff;
	rtl_set_bbreg(hw, RTXAGC_A_CCK1_MCS32, MASKBYTE1, tmpval);

	RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
		"CCK PWR 1M (rf-A) = 0x%x (reg 0x%x)\n",
		tmpval, RTXAGC_A_CCK1_MCS32);

	tmpval = tx_agc[RF90_PATH_A] >> 8;
	if (mac->mode == WIRELESS_MODE_B)
		tmpval = tmpval & 0xff00ffff;
	rtl_set_bbreg(hw, RTXAGC_B_CCK11_A_CCK2_11, 0xffffff00, tmpval);
	RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
		"CCK PWR 2~11M (rf-A) = 0x%x (reg 0x%x)\n",
		tmpval, RTXAGC_B_CCK11_A_CCK2_11);
	tmpval = tx_agc[RF90_PATH_B] >> 24;
	rtl_set_bbreg(hw, RTXAGC_B_CCK11_A_CCK2_11, MASKBYTE0, tmpval);
	RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
		"CCK PWR 11M (rf-B) = 0x%x (reg 0x%x)\n",
		tmpval, RTXAGC_B_CCK11_A_CCK2_11);
	tmpval = tx_agc[RF90_PATH_B] & 0x00ffffff;
	rtl_set_bbreg(hw, RTXAGC_B_CCK1_55_MCS32, 0xffffff00, tmpval);
	RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
		"CCK PWR 1~5.5M (rf-B) = 0x%x (reg 0x%x)\n",
		tmpval, RTXAGC_B_CCK1_55_MCS32);
}

static void rtl92c_phy_get_power_base(struct ieee80211_hw *hw,
				      u8 *ppowerlevel, u8 channel,
				      u32 *ofdmbase, u32 *mcsbase)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
	u32 powerBase0, powerBase1;
	u8 legacy_pwrdiff = 0, ht20_pwrdiff = 0;
	u8 i, powerlevel[2];

	for (i = 0; i < 2; i++) {
		powerlevel[i] = ppowerlevel[i];
		legacy_pwrdiff = rtlefuse->txpwr_legacyhtdiff[i][channel - 1];
		powerBase0 = powerlevel[i] + legacy_pwrdiff;
		powerBase0 = (powerBase0 << 24) | (powerBase0 << 16) |
		    (powerBase0 << 8) | powerBase0;
		*(ofdmbase + i) = powerBase0;
		RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
			" [OFDM power base index rf(%c) = 0x%x]\n",
			i == 0 ? 'A' : 'B', *(ofdmbase + i));
	}
	for (i = 0; i < 2; i++) {
		if (rtlphy->current_chan_bw == HT_CHANNEL_WIDTH_20) {
			ht20_pwrdiff = rtlefuse->txpwr_ht20diff[i][channel - 1];
			powerlevel[i] += ht20_pwrdiff;
		}
		powerBase1 = powerlevel[i];
		powerBase1 = (powerBase1 << 24) |
		    (powerBase1 << 16) | (powerBase1 << 8) | powerBase1;
		*(mcsbase + i) = powerBase1;
		RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
			" [MCS power base index rf(%c) = 0x%x]\n",
			i == 0 ? 'A' : 'B', *(mcsbase + i));
	}
}

static void _rtl92c_get_txpower_writeval_by_regulatory(struct ieee80211_hw *hw,
						       u8 channel, u8 index,
						       u32 *powerBase0,
						       u32 *powerBase1,
						       u32 *p_outwriteval)
{
	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 = 0, pwr_diff_limit[4];
	u32 writeVal, customer_limit, rf;

	for (rf = 0; rf < 2; rf++) {
		switch (rtlefuse->eeprom_regulatory) {
		case 0:
			chnlgroup = 0;
			writeVal = rtlphy->mcs_offset
			    [chnlgroup][index + (rf ? 8 : 0)]
			    + ((index < 2) ? powerBase0[rf] : powerBase1[rf]);
			RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
				"RTK better performance,writeVal(%c) = 0x%x\n",
				rf == 0 ? 'A' : 'B', writeVal);
			break;
		case 1:
			if (rtlphy->pwrgroup_cnt == 1)
				chnlgroup = 0;
			if (rtlphy->pwrgroup_cnt >= 3) {
				if (channel <= 3)
					chnlgroup = 0;
				else if (channel >= 4 && channel <= 9)
					chnlgroup = 1;
				else if (channel > 9)
					chnlgroup = 2;
				if (rtlphy->current_chan_bw ==
				    HT_CHANNEL_WIDTH_20)
					chnlgroup++;
				else
					chnlgroup += 4;
			}
			writeVal = rtlphy->mcs_offset[chnlgroup][index +
					(rf ? 8 : 0)] +
					((index < 2) ? powerBase0[rf] :
					powerBase1[rf]);
			RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
				"Realtek regulatory, 20MHz, writeVal(%c) = 0x%x\n",
				rf == 0 ? 'A' : 'B', writeVal);
			break;
		case 2:
			writeVal = ((index < 2) ? powerBase0[rf] :
				   powerBase1[rf]);
			RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
				"Better regulatory,writeVal(%c) = 0x%x\n",
				rf == 0 ? 'A' : 'B', writeVal);
			break;
		case 3:
			chnlgroup = 0;
			if (rtlphy->current_chan_bw ==
			    HT_CHANNEL_WIDTH_20_40) {
				RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
					"customer's limit, 40MHzrf(%c) = 0x%x\n",
					rf == 0 ? 'A' : 'B',
					rtlefuse->pwrgroup_ht40[rf]
					[channel - 1]);
			} else {
				RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
					"customer's limit, 20MHz rf(%c) = 0x%x\n",
					rf == 0 ? 'A' : 'B',
					rtlefuse->pwrgroup_ht20[rf]
					[channel - 1]);
			}
			for (i = 0; i < 4; i++) {
				pwr_diff_limit[i] = (u8) ((rtlphy->mcs_offset
				    [chnlgroup][index + (rf ? 8 : 0)]
				    & (0x7f << (i * 8))) >> (i * 8));
				if (rtlphy->current_chan_bw ==
				    HT_CHANNEL_WIDTH_20_40) {
					if (pwr_diff_limit[i] >
					    rtlefuse->pwrgroup_ht40[rf]
						[channel - 1])
						pwr_diff_limit[i] = rtlefuse->
						    pwrgroup_ht40[rf]
						    [channel - 1];
				} else {
					if (pwr_diff_limit[i] >
					    rtlefuse->pwrgroup_ht20[rf]
						[channel - 1])
						pwr_diff_limit[i] =
						    rtlefuse->pwrgroup_ht20[rf]
						    [channel - 1];
				}
			}
			customer_limit = (pwr_diff_limit[3] << 24) |
			    (pwr_diff_limit[2] << 16) |
			    (pwr_diff_limit[1] << 8) | (pwr_diff_limit[0]);
			RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
				"Customer's limit rf(%c) = 0x%x\n",
				rf == 0 ? 'A' : 'B', customer_limit);
			writeVal = customer_limit + ((index < 2) ?
				   powerBase0[rf] : powerBase1[rf]);
			RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
				"Customer, writeVal rf(%c)= 0x%x\n",
				rf == 0 ? 'A' : 'B', writeVal);
			break;
		default:
			chnlgroup = 0;
			writeVal = rtlphy->mcs_offset[chnlgroup]
				   [index + (rf ? 8 : 0)] + ((index < 2) ?
				   powerBase0[rf] : powerBase1[rf]);
			RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
				"RTK better performance, writeValrf(%c) = 0x%x\n",
				rf == 0 ? 'A' : 'B', writeVal);
			break;
		}
		if (rtlpriv->dm.dynamic_txhighpower_lvl ==
		    TXHIGHPWRLEVEL_LEVEL1)
			writeVal = 0x14141414;
		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
			 TXHIGHPWRLEVEL_LEVEL2)
			writeVal = 0x00000000;
		if (rtlpriv->dm.dynamic_txhighpower_lvl == TXHIGHPWRLEVEL_BT1)
			writeVal = writeVal - 0x06060606;
		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
			 TXHIGHPWRLEVEL_BT2)
			writeVal = writeVal;
		*(p_outwriteval + rf) = writeVal;
	}
}

static void _rtl92c_write_ofdm_power_reg(struct ieee80211_hw *hw,
					 u8 index, u32 *pValue)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	u16 regoffset_a[6] = {
		RTXAGC_A_RATE18_06, RTXAGC_A_RATE54_24,
		RTXAGC_A_MCS03_MCS00, RTXAGC_A_MCS07_MCS04,
		RTXAGC_A_MCS11_MCS08, RTXAGC_A_MCS15_MCS12
	};
	u16 regoffset_b[6] = {
		RTXAGC_B_RATE18_06, RTXAGC_B_RATE54_24,
		RTXAGC_B_MCS03_MCS00, RTXAGC_B_MCS07_MCS04,
		RTXAGC_B_MCS11_MCS08, RTXAGC_B_MCS15_MCS12
	};
	u8 i, rf, pwr_val[4];
	u32 writeVal;
	u16 regoffset;

	for (rf = 0; rf < 2; rf++) {
		writeVal = pValue[rf];
		for (i = 0; i < 4; i++) {
			pwr_val[i] = (u8)((writeVal & (0x7f << (i * 8))) >>
					  (i * 8));
			if (pwr_val[i] > RF6052_MAX_TX_PWR)
				pwr_val[i] = RF6052_MAX_TX_PWR;
		}
		writeVal = (pwr_val[3] << 24) | (pwr_val[2] << 16) |
		    (pwr_val[1] << 8) | pwr_val[0];
		if (rf == 0)
			regoffset = regoffset_a[index];
		else
			regoffset = regoffset_b[index];
		rtl_set_bbreg(hw, regoffset, MASKDWORD, writeVal);
		RTPRINT(rtlpriv, FPHY, PHY_TXPWR,
			"Set 0x%x = %08x\n", regoffset, writeVal);
		if (((get_rf_type(rtlphy) == RF_2T2R) &&
		     (regoffset == RTXAGC_A_MCS15_MCS12 ||
		      regoffset == RTXAGC_B_MCS15_MCS12)) ||
		    ((get_rf_type(rtlphy) != RF_2T2R) &&
		     (regoffset == RTXAGC_A_MCS07_MCS04 ||
		      regoffset == RTXAGC_B_MCS07_MCS04))) {
			writeVal = pwr_val[3];
			if (regoffset == RTXAGC_A_MCS15_MCS12 ||
			    regoffset == RTXAGC_A_MCS07_MCS04)
				regoffset = 0xc90;
			if (regoffset == RTXAGC_B_MCS15_MCS12 ||
			    regoffset == RTXAGC_B_MCS07_MCS04)
				regoffset = 0xc98;
			for (i = 0; i < 3; i++) {
				writeVal = (writeVal > 6) ? (writeVal - 6) : 0;
				rtl_write_byte(rtlpriv, (u32)(regoffset + i),
					      (u8)writeVal);
			}
		}
	}
}

void rtl92cu_phy_rf6052_set_ofdm_txpower(struct ieee80211_hw *hw,
					 u8 *ppowerlevel, u8 channel)
{
	u32 writeVal[2], powerBase0[2], powerBase1[2];
	u8 index = 0;

	rtl92c_phy_get_power_base(hw, ppowerlevel,
				  channel, &powerBase0[0], &powerBase1[0]);
	for (index = 0; index < 6; index++) {
		_rtl92c_get_txpower_writeval_by_regulatory(hw,
							   channel, index,
							   &powerBase0[0],
							   &powerBase1[0],
							   &writeVal[0]);
		_rtl92c_write_ofdm_power_reg(hw, index, &writeVal[0]);
	}
}

bool rtl92cu_phy_rf6052_config(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	bool rtstatus = true;
	u8 b_reg_hwparafile = 1;

	if (rtlphy->rf_type == RF_1T1R)
		rtlphy->num_total_rfpath = 1;
	else
		rtlphy->num_total_rfpath = 2;
	if (b_reg_hwparafile == 1)
		rtstatus = _rtl92c_phy_rf6052_config_parafile(hw);
	return rtstatus;
}

static bool _rtl92c_phy_rf6052_config_parafile(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	u32 u4_regvalue = 0;
	u8 rfpath;
	bool rtstatus = true;
	struct bb_reg_def *pphyreg;

	for (rfpath = 0; rfpath < rtlphy->num_total_rfpath; rfpath++) {
		pphyreg = &rtlphy->phyreg_def[rfpath];
		switch (rfpath) {
		case RF90_PATH_A:
		case RF90_PATH_C:
			u4_regvalue = rtl_get_bbreg(hw, pphyreg->rfintfs,
						    BRFSI_RFENV);
			break;
		case RF90_PATH_B:
		case RF90_PATH_D:
			u4_regvalue = rtl_get_bbreg(hw, pphyreg->rfintfs,
						    BRFSI_RFENV << 16);
			break;
		}
		rtl_set_bbreg(hw, pphyreg->rfintfe, BRFSI_RFENV << 16, 0x1);
		udelay(1);
		rtl_set_bbreg(hw, pphyreg->rfintfo, BRFSI_RFENV, 0x1);
		udelay(1);
		rtl_set_bbreg(hw, pphyreg->rfhssi_para2,
			      B3WIREADDREAALENGTH, 0x0);
		udelay(1);
		rtl_set_bbreg(hw, pphyreg->rfhssi_para2, B3WIREDATALENGTH, 0x0);
		udelay(1);
		switch (rfpath) {
		case RF90_PATH_A:
			rtstatus = rtl92cu_phy_config_rf_with_headerfile(hw,
					(enum radio_path) rfpath);
			break;
		case RF90_PATH_B:
			rtstatus = rtl92cu_phy_config_rf_with_headerfile(hw,
					(enum radio_path) rfpath);
			break;
		case RF90_PATH_C:
			break;
		case RF90_PATH_D:
			break;
		}
		switch (rfpath) {
		case RF90_PATH_A:
		case RF90_PATH_C:
			rtl_set_bbreg(hw, pphyreg->rfintfs,
				      BRFSI_RFENV, u4_regvalue);
			break;
		case RF90_PATH_B:
		case RF90_PATH_D:
			rtl_set_bbreg(hw, pphyreg->rfintfs,
				      BRFSI_RFENV << 16, u4_regvalue);
			break;
		}
		if (!rtstatus) {
			RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
				 "Radio[%d] Fail!!", rfpath);
			goto phy_rf_cfg_fail;
		}
	}
	RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE, "<---\n");
	return rtstatus;
phy_rf_cfg_fail:
	return rtstatus;
}