phy.c

/******************************************************************************
 *
 * Copyright(c) 2009-2010  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 "../pci.h"
#include "../ps.h"
#include "reg.h"
#include "def.h"
#include "hw.h"
#include "phy.h"
#include "rf.h"
#include "dm.h"
#include "table.h"

static bool _rtl92c_phy_config_mac_with_headerfile(struct ieee80211_hw *hw);

u32 rtl92c_phy_query_rf_reg(struct ieee80211_hw *hw,
			    enum radio_path rfpath, u32 regaddr, u32 bitmask)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u32 original_value, readback_value, bitshift;
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	unsigned long flags;

	RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, ("regaddr(%#x), "
					       "rfpath(%#x), bitmask(%#x)\n",
					       regaddr, rfpath, bitmask));

	spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags);

	if (rtlphy->rf_mode != RF_OP_BY_FW) {
		original_value = _rtl92c_phy_rf_serial_read(hw,
							    rfpath, regaddr);
	} else {
		original_value = _rtl92c_phy_fw_rf_serial_read(hw,
							       rfpath, regaddr);
	}

	bitshift = _rtl92c_phy_calculate_bit_shift(bitmask);
	readback_value = (original_value & bitmask) >> bitshift;

	spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags);

	RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
		 ("regaddr(%#x), rfpath(%#x), "
		  "bitmask(%#x), original_value(%#x)\n",
		  regaddr, rfpath, bitmask, original_value));

	return readback_value;
}

bool rtl92c_phy_mac_config(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
	bool is92c = IS_92C_SERIAL(rtlhal->version);
	bool rtstatus = _rtl92c_phy_config_mac_with_headerfile(hw);

	if (is92c)
		rtl_write_byte(rtlpriv, 0x14, 0x71);
	return rtstatus;
}

bool rtl92c_phy_bb_config(struct ieee80211_hw *hw)
{
	bool rtstatus = true;
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u16 regval;
	u32 regvaldw;
	u8 reg_hwparafile = 1;

	_rtl92c_phy_init_bb_rf_register_definition(hw);
	regval = rtl_read_word(rtlpriv, REG_SYS_FUNC_EN);
	rtl_write_word(rtlpriv, REG_SYS_FUNC_EN,
		       regval | BIT(13) | BIT(0) | BIT(1));
	rtl_write_byte(rtlpriv, REG_AFE_PLL_CTRL, 0x83);
	rtl_write_byte(rtlpriv, REG_AFE_PLL_CTRL + 1, 0xdb);
	rtl_write_byte(rtlpriv, REG_RF_CTRL, RF_EN | RF_RSTB | RF_SDMRSTB);
	rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN,
		       FEN_PPLL | FEN_PCIEA | FEN_DIO_PCIE |
		       FEN_BB_GLB_RSTn | FEN_BBRSTB);
	rtl_write_byte(rtlpriv, REG_AFE_XTAL_CTRL + 1, 0x80);
	regvaldw = rtl_read_dword(rtlpriv, REG_LEDCFG0);
	rtl_write_dword(rtlpriv, REG_LEDCFG0, regvaldw | BIT(23));
	if (reg_hwparafile == 1)
		rtstatus = _rtl92c_phy_bb8192c_config_parafile(hw);
	return rtstatus;
}

void rtl92ce_phy_set_rf_reg(struct ieee80211_hw *hw,
			    enum radio_path rfpath,
			    u32 regaddr, u32 bitmask, u32 data)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	u32 original_value, bitshift;
	unsigned long flags;

	RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
		 ("regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n",
		  regaddr, bitmask, data, rfpath));

	spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags);

	if (rtlphy->rf_mode != RF_OP_BY_FW) {
		if (bitmask != RFREG_OFFSET_MASK) {
			original_value = _rtl92c_phy_rf_serial_read(hw,
								    rfpath,
								    regaddr);
			bitshift = _rtl92c_phy_calculate_bit_shift(bitmask);
			data =
			    ((original_value & (~bitmask)) |
			     (data << bitshift));
		}

		_rtl92c_phy_rf_serial_write(hw, rfpath, regaddr, data);
	} else {
		if (bitmask != RFREG_OFFSET_MASK) {
			original_value = _rtl92c_phy_fw_rf_serial_read(hw,
								       rfpath,
								       regaddr);
			bitshift = _rtl92c_phy_calculate_bit_shift(bitmask);
			data =
			    ((original_value & (~bitmask)) |
			     (data << bitshift));
		}
		_rtl92c_phy_fw_rf_serial_write(hw, rfpath, regaddr, data);
	}

	spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags);

	RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, ("regaddr(%#x), "
					       "bitmask(%#x), data(%#x), "
					       "rfpath(%#x)\n", regaddr,
					       bitmask, data, rfpath));
}

static bool _rtl92c_phy_config_mac_with_headerfile(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u32 i;
	u32 arraylength;
	u32 *ptrarray;

	RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE, ("Read Rtl819XMACPHY_Array\n"));
	arraylength = MAC_2T_ARRAYLENGTH;
	ptrarray = RTL8192CEMAC_2T_ARRAY;
	RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
		 ("Img:RTL8192CEMAC_2T_ARRAY\n"));
	for (i = 0; i < arraylength; i = i + 2)
		rtl_write_byte(rtlpriv, ptrarray[i], (u8) ptrarray[i + 1]);
	return true;
}

bool _rtl92ce_phy_config_bb_with_headerfile(struct ieee80211_hw *hw,
					    u8 configtype)
{
	int i;
	u32 *phy_regarray_table;
	u32 *agctab_array_table;
	u16 phy_reg_arraylen, agctab_arraylen;
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));

	if (IS_92C_SERIAL(rtlhal->version)) {
		agctab_arraylen = AGCTAB_2TARRAYLENGTH;
		agctab_array_table = RTL8192CEAGCTAB_2TARRAY;
		phy_reg_arraylen = PHY_REG_2TARRAY_LENGTH;
		phy_regarray_table = RTL8192CEPHY_REG_2TARRAY;
	} else {
		agctab_arraylen = AGCTAB_1TARRAYLENGTH;
		agctab_array_table = RTL8192CEAGCTAB_1TARRAY;
		phy_reg_arraylen = PHY_REG_1TARRAY_LENGTH;
		phy_regarray_table = RTL8192CEPHY_REG_1TARRAY;
	}
	if (configtype == BASEBAND_CONFIG_PHY_REG) {
		for (i = 0; i < phy_reg_arraylen; i = i + 2) {
			if (phy_regarray_table[i] == 0xfe)
				mdelay(50);
			else if (phy_regarray_table[i] == 0xfd)
				mdelay(5);
			else if (phy_regarray_table[i] == 0xfc)
				mdelay(1);
			else if (phy_regarray_table[i] == 0xfb)
				udelay(50);
			else if (phy_regarray_table[i] == 0xfa)
				udelay(5);
			else if (phy_regarray_table[i] == 0xf9)
				udelay(1);
			rtl_set_bbreg(hw, phy_regarray_table[i], MASKDWORD,
				      phy_regarray_table[i + 1]);
			udelay(1);
			RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
				 ("The phy_regarray_table[0] is %x"
				  " Rtl819XPHY_REGArray[1] is %x\n",
				  phy_regarray_table[i],
				  phy_regarray_table[i + 1]));
		}
	} else if (configtype == BASEBAND_CONFIG_AGC_TAB) {
		for (i = 0; i < agctab_arraylen; i = i + 2) {
			rtl_set_bbreg(hw, agctab_array_table[i], MASKDWORD,
				      agctab_array_table[i + 1]);
			udelay(1);
			RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
				 ("The agctab_array_table[0] is "
				  "%x Rtl819XPHY_REGArray[1] is %x\n",
				  agctab_array_table[i],
				  agctab_array_table[i + 1]));
		}
	}
	return true;
}

bool _rtl92ce_phy_config_bb_with_pgheaderfile(struct ieee80211_hw *hw,
					      u8 configtype)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	int i;
	u32 *phy_regarray_table_pg;
	u16 phy_regarray_pg_len;

	phy_regarray_pg_len = PHY_REG_ARRAY_PGLENGTH;
	phy_regarray_table_pg = RTL8192CEPHY_REG_ARRAY_PG;

	if (configtype == BASEBAND_CONFIG_PHY_REG) {
		for (i = 0; i < phy_regarray_pg_len; i = i + 3) {
			if (phy_regarray_table_pg[i] == 0xfe)
				mdelay(50);
			else if (phy_regarray_table_pg[i] == 0xfd)
				mdelay(5);
			else if (phy_regarray_table_pg[i] == 0xfc)
				mdelay(1);
			else if (phy_regarray_table_pg[i] == 0xfb)
				udelay(50);
			else if (phy_regarray_table_pg[i] == 0xfa)
				udelay(5);
			else if (phy_regarray_table_pg[i] == 0xf9)
				udelay(1);

			_rtl92c_store_pwrIndex_diffrate_offset(hw,
					       phy_regarray_table_pg[i],
					       phy_regarray_table_pg[i + 1],
					       phy_regarray_table_pg[i + 2]);
		}
	} else {

		RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
			 ("configtype != BaseBand_Config_PHY_REG\n"));
	}
	return true;
}

bool rtl92c_phy_config_rf_with_headerfile(struct ieee80211_hw *hw,
					  enum radio_path rfpath)
{

	int i;
	bool rtstatus = true;
	u32 *radioa_array_table;
	u32 *radiob_array_table;
	u16 radioa_arraylen, radiob_arraylen;
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));

	if (IS_92C_SERIAL(rtlhal->version)) {
		radioa_arraylen = RADIOA_2TARRAYLENGTH;
		radioa_array_table = RTL8192CERADIOA_2TARRAY;
		radiob_arraylen = RADIOB_2TARRAYLENGTH;
		radiob_array_table = RTL8192CE_RADIOB_2TARRAY;
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			 ("Radio_A:RTL8192CERADIOA_2TARRAY\n"));
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			 ("Radio_B:RTL8192CE_RADIOB_2TARRAY\n"));
	} else {
		radioa_arraylen = RADIOA_1TARRAYLENGTH;
		radioa_array_table = RTL8192CE_RADIOA_1TARRAY;
		radiob_arraylen = RADIOB_1TARRAYLENGTH;
		radiob_array_table = RTL8192CE_RADIOB_1TARRAY;
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			 ("Radio_A:RTL8192CE_RADIOA_1TARRAY\n"));
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			 ("Radio_B:RTL8192CE_RADIOB_1TARRAY\n"));
	}
	RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE, ("Radio No %x\n", rfpath));
	rtstatus = true;
	switch (rfpath) {
	case RF90_PATH_A:
		for (i = 0; i < radioa_arraylen; i = i + 2) {
			if (radioa_array_table[i] == 0xfe)
				mdelay(50);
			else if (radioa_array_table[i] == 0xfd)
				mdelay(5);
			else if (radioa_array_table[i] == 0xfc)
				mdelay(1);
			else if (radioa_array_table[i] == 0xfb)
				udelay(50);
			else if (radioa_array_table[i] == 0xfa)
				udelay(5);
			else if (radioa_array_table[i] == 0xf9)
				udelay(1);
			else {
				rtl_set_rfreg(hw, rfpath, radioa_array_table[i],
					      RFREG_OFFSET_MASK,
					      radioa_array_table[i + 1]);
				udelay(1);
			}
		}
		break;
	case RF90_PATH_B:
		for (i = 0; i < radiob_arraylen; i = i + 2) {
			if (radiob_array_table[i] == 0xfe) {
				mdelay(50);
			} else if (radiob_array_table[i] == 0xfd)
				mdelay(5);
			else if (radiob_array_table[i] == 0xfc)
				mdelay(1);
			else if (radiob_array_table[i] == 0xfb)
				udelay(50);
			else if (radiob_array_table[i] == 0xfa)
				udelay(5);
			else if (radiob_array_table[i] == 0xf9)
				udelay(1);
			else {
				rtl_set_rfreg(hw, rfpath, radiob_array_table[i],
					      RFREG_OFFSET_MASK,
					      radiob_array_table[i + 1]);
				udelay(1);
			}
		}
		break;
	case RF90_PATH_C:
		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
			 ("switch case not process\n"));
		break;
	case RF90_PATH_D:
		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
			 ("switch case not process\n"));
		break;
	}
	return true;
}

void _rtl92ce_phy_lc_calibrate(struct ieee80211_hw *hw, bool is2t)
{
	u8 tmpreg;
	u32 rf_a_mode = 0, rf_b_mode = 0, lc_cal;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	tmpreg = rtl_read_byte(rtlpriv, 0xd03);

	if ((tmpreg & 0x70) != 0)
		rtl_write_byte(rtlpriv, 0xd03, tmpreg & 0x8F);
	else
		rtl_write_byte(rtlpriv, REG_TXPAUSE, 0xFF);

	if ((tmpreg & 0x70) != 0) {
		rf_a_mode = rtl_get_rfreg(hw, RF90_PATH_A, 0x00, MASK12BITS);

		if (is2t)
			rf_b_mode = rtl_get_rfreg(hw, RF90_PATH_B, 0x00,
						  MASK12BITS);

		rtl_set_rfreg(hw, RF90_PATH_A, 0x00, MASK12BITS,
			      (rf_a_mode & 0x8FFFF) | 0x10000);

		if (is2t)
			rtl_set_rfreg(hw, RF90_PATH_B, 0x00, MASK12BITS,
				      (rf_b_mode & 0x8FFFF) | 0x10000);
	}
	lc_cal = rtl_get_rfreg(hw, RF90_PATH_A, 0x18, MASK12BITS);

	rtl_set_rfreg(hw, RF90_PATH_A, 0x18, MASK12BITS, lc_cal | 0x08000);

	mdelay(100);

	if ((tmpreg & 0x70) != 0) {
		rtl_write_byte(rtlpriv, 0xd03, tmpreg);
		rtl_set_rfreg(hw, RF90_PATH_A, 0x00, MASK12BITS, rf_a_mode);

		if (is2t)
			rtl_set_rfreg(hw, RF90_PATH_B, 0x00, MASK12BITS,
				      rf_b_mode);
	} else {
		rtl_write_byte(rtlpriv, REG_TXPAUSE, 0x00);
	}
}

static void _rtl92ce_phy_set_rf_sleep(struct ieee80211_hw *hw)
{
	u32 u4b_tmp;
	u8 delay = 5;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_byte(rtlpriv, REG_TXPAUSE, 0xFF);
	rtl_set_rfreg(hw, RF90_PATH_A, 0x00, RFREG_OFFSET_MASK, 0x00);
	rtl_write_byte(rtlpriv, REG_APSD_CTRL, 0x40);
	u4b_tmp = rtl_get_rfreg(hw, RF90_PATH_A, 0, RFREG_OFFSET_MASK);
	while (u4b_tmp != 0 && delay > 0) {
		rtl_write_byte(rtlpriv, REG_APSD_CTRL, 0x0);
		rtl_set_rfreg(hw, RF90_PATH_A, 0x00, RFREG_OFFSET_MASK, 0x00);
		rtl_write_byte(rtlpriv, REG_APSD_CTRL, 0x40);
		u4b_tmp = rtl_get_rfreg(hw, RF90_PATH_A, 0, RFREG_OFFSET_MASK);
		delay--;
	}
	if (delay == 0) {
		rtl_write_byte(rtlpriv, REG_APSD_CTRL, 0x00);
		rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN, 0xE2);
		rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN, 0xE3);
		rtl_write_byte(rtlpriv, REG_TXPAUSE, 0x00);
		RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
			 ("Switch RF timeout !!!.\n"));
		return;
	}
	rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN, 0xE2);
	rtl_write_byte(rtlpriv, REG_SPS0_CTRL, 0x22);
}

static bool _rtl92ce_phy_set_rf_power_state(struct ieee80211_hw *hw,
					    enum rf_pwrstate rfpwr_state)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
	bool bresult = true;
	u8 i, queue_id;
	struct rtl8192_tx_ring *ring = NULL;

	ppsc->set_rfpowerstate_inprogress = true;
	switch (rfpwr_state) {
	case ERFON:{
			if ((ppsc->rfpwr_state == ERFOFF) &&
			    RT_IN_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC)) {
				bool rtstatus;
				u32 InitializeCount = 0;
				do {
					InitializeCount++;
					RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
						 ("IPS Set eRf nic enable\n"));
					rtstatus = rtl_ps_enable_nic(hw);
				} while ((rtstatus != true)
					 && (InitializeCount < 10));
				RT_CLEAR_PS_LEVEL(ppsc,
						  RT_RF_OFF_LEVL_HALT_NIC);
			} else {
				RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
					 ("Set ERFON sleeped:%d ms\n",
					  jiffies_to_msecs(jiffies -
						   ppsc->
						   last_sleep_jiffies)));
				ppsc->last_awake_jiffies = jiffies;
				rtl92ce_phy_set_rf_on(hw);
			}
			if (mac->link_state == MAC80211_LINKED) {
				rtlpriv->cfg->ops->led_control(hw,
							       LED_CTL_LINK);
			} else {
				rtlpriv->cfg->ops->led_control(hw,
							       LED_CTL_NO_LINK);
			}
			break;
		}
	case ERFOFF:{
			if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_HALT_NIC) {
				RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
					 ("IPS Set eRf nic disable\n"));
				rtl_ps_disable_nic(hw);
				RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
			} else {
				if (ppsc->rfoff_reason == RF_CHANGE_BY_IPS) {
					rtlpriv->cfg->ops->led_control(hw,
							       LED_CTL_NO_LINK);
				} else {
					rtlpriv->cfg->ops->led_control(hw,
							     LED_CTL_POWER_OFF);
				}
			}
			break;
		}
	case ERFSLEEP:{
			if (ppsc->rfpwr_state == ERFOFF)
				break;
			for (queue_id = 0, i = 0;
			     queue_id < RTL_PCI_MAX_TX_QUEUE_COUNT;) {
				ring = &pcipriv->dev.tx_ring[queue_id];
				if (skb_queue_len(&ring->queue) == 0) {
					queue_id++;
					continue;
				} else {
					RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
						 ("eRf Off/Sleep: %d times "
						  "TcbBusyQueue[%d] =%d before "
						  "doze!\n", (i + 1), queue_id,
						  skb_queue_len(&ring->queue)));

					udelay(10);
					i++;
				}
				if (i >= MAX_DOZE_WAITING_TIMES_9x) {
					RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
						 ("\n ERFSLEEP: %d times "
						  "TcbBusyQueue[%d] = %d !\n",
						  MAX_DOZE_WAITING_TIMES_9x,
						  queue_id,
						  skb_queue_len(&ring->queue)));
					break;
				}
			}
			RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
				 ("Set ERFSLEEP awaked:%d ms\n",
				  jiffies_to_msecs(jiffies -
						   ppsc->last_awake_jiffies)));
			ppsc->last_sleep_jiffies = jiffies;
			_rtl92ce_phy_set_rf_sleep(hw);
			break;
		}
	default:
		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
			 ("switch case not process\n"));
		bresult = false;
		break;
	}
	if (bresult)
		ppsc->rfpwr_state = rfpwr_state;
	ppsc->set_rfpowerstate_inprogress = false;
	return bresult;
}

bool rtl92c_phy_set_rf_power_state(struct ieee80211_hw *hw,
				   enum rf_pwrstate rfpwr_state)
{
	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));

	bool bresult = false;

	if (rfpwr_state == ppsc->rfpwr_state)
		return bresult;
	bresult = _rtl92ce_phy_set_rf_power_state(hw, rfpwr_state);
	return bresult;
}