Initial import

1 files changed, 535 insertions, 0 deletions

diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/rf.c b/drivers/net/wireless/rtlwifi/rtl8192se/rf.c
new file mode 100644
index 000000000..78a81c1e3
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/rtl8192se/rf.c
@@ -0,0 +1,535 @@
+/******************************************************************************
+ *
+ * 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 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);
+	char 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 {
+			if (rtlphy->pwrgroup_cnt == 1)
+				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:
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+			 "unknown bandwidth: %#X\n", bandwidth);
+		break;
+	}
+}