root/drivers/net/wireless/realtek/rtlwifi/rtl8192du/rf.c
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2024  Realtek Corporation.*/

#include "../wifi.h"
#include "../rtl8192d/reg.h"
#include "../rtl8192d/phy_common.h"
#include "phy.h"
#include "rf.h"

bool rtl92du_phy_enable_anotherphy(struct ieee80211_hw *hw, bool bmac0)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_hal *rtlhal = &rtlpriv->rtlhal;
        u8 mac_on_bit = bmac0 ? MAC1_ON : MAC0_ON;
        u8 mac_reg = bmac0 ? REG_MAC1 : REG_MAC0;
        bool bresult = true; /* true: need to enable BB/RF power */
        u32 maskforphyset = 0;
        u16 val16;
        u8 u1btmp;

        rtlhal->during_mac0init_radiob = false;
        rtlhal->during_mac1init_radioa = false;
        rtl_dbg(rtlpriv, COMP_RF, DBG_LOUD, "===>\n");

        /* MAC0 Need PHY1 load radio_b.txt . Driver use DBI to write. */
        u1btmp = rtl_read_byte(rtlpriv, mac_reg);
        if (!(u1btmp & mac_on_bit)) {
                rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "enable BB & RF\n");
                /* Enable BB and RF power */

                maskforphyset = bmac0 ? MAC0_ACCESS_PHY1 : MAC1_ACCESS_PHY0;

                val16 = rtl_read_word(rtlpriv, REG_SYS_FUNC_EN | maskforphyset);
                val16 &= 0xfffc;
                rtl_write_word(rtlpriv, REG_SYS_FUNC_EN | maskforphyset, val16);

                val16 = rtl_read_word(rtlpriv, REG_SYS_FUNC_EN | maskforphyset);
                val16 |= BIT(13) | BIT(0) | BIT(1);
                rtl_write_word(rtlpriv, REG_SYS_FUNC_EN | maskforphyset, val16);
        } else {
                /* We think if MAC1 is ON,then radio_a.txt
                 * and radio_b.txt has been load.
                 */
                bresult = false;
        }
        rtl_dbg(rtlpriv, COMP_RF, DBG_LOUD, "<===\n");
        return bresult;
}

void rtl92du_phy_powerdown_anotherphy(struct ieee80211_hw *hw, bool bmac0)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_hal *rtlhal = &rtlpriv->rtlhal;
        u8 mac_on_bit = bmac0 ? MAC1_ON : MAC0_ON;
        u8 mac_reg = bmac0 ? REG_MAC1 : REG_MAC0;
        u32 maskforphyset = 0;
        u8 u1btmp;

        rtlhal->during_mac0init_radiob = false;
        rtlhal->during_mac1init_radioa = false;
        rtl_dbg(rtlpriv, COMP_RF, DBG_LOUD, "====>\n");

        /* check MAC0 enable or not again now, if
         * enabled, not power down radio A.
         */
        u1btmp = rtl_read_byte(rtlpriv, mac_reg);
        if (!(u1btmp & mac_on_bit)) {
                rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD, "power down\n");
                /* power down RF radio A according to YuNan's advice. */
                maskforphyset = bmac0 ? MAC0_ACCESS_PHY1 : MAC1_ACCESS_PHY0;
                rtl_write_dword(rtlpriv, RFPGA0_XA_LSSIPARAMETER | maskforphyset,
                                0x00000000);
        }
        rtl_dbg(rtlpriv, COMP_RF, DBG_LOUD, "<====\n");
}

bool rtl92du_phy_rf6052_config(struct ieee80211_hw *hw)
{
        bool mac1_initradioa_first = false, mac0_initradiob_first = false;
        bool need_pwrdown_radioa = false, need_pwrdown_radiob = false;
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_hal *rtlhal = &rtlpriv->rtlhal;
        struct rtl_phy *rtlphy = &rtlpriv->phy;
        struct bb_reg_def *pphyreg;
        bool true_bpath = false;
        bool rtstatus = true;
        u32 u4_regvalue = 0;
        u8 rfpath;

        if (rtlphy->rf_type == RF_1T1R)
                rtlphy->num_total_rfpath = 1;
        else
                rtlphy->num_total_rfpath = 2;

        /* Single phy mode: use radio_a radio_b config path_A path_B
         * separately by MAC0, and MAC1 needn't configure RF;
         * Dual PHY mode: MAC0 use radio_a config 1st phy path_A,
         * MAC1 use radio_b config 2nd PHY path_A.
         * DMDP, MAC0 on G band, MAC1 on A band.
         */
        if (rtlhal->macphymode == DUALMAC_DUALPHY) {
                if (rtlhal->current_bandtype == BAND_ON_2_4G &&
                    rtlhal->interfaceindex == 0) {
                        /* MAC0 needs PHY1 load radio_b.txt. */
                        if (rtl92du_phy_enable_anotherphy(hw, true)) {
                                rtlphy->num_total_rfpath = 2;
                                mac0_initradiob_first = true;
                        } else {
                                /* We think if MAC1 is ON,then radio_a.txt and
                                 * radio_b.txt has been load.
                                 */
                                return rtstatus;
                        }
                } else if (rtlhal->current_bandtype == BAND_ON_5G &&
                           rtlhal->interfaceindex == 1) {
                        /* MAC1 needs PHY0 load radio_a.txt. */
                        if (rtl92du_phy_enable_anotherphy(hw, false)) {
                                rtlphy->num_total_rfpath = 2;
                                mac1_initradioa_first = true;
                        } else {
                                /* We think if MAC0 is ON, then radio_a.txt and
                                 * radio_b.txt has been load.
                                 */
                                return rtstatus;
                        }
                } else if (rtlhal->interfaceindex == 1) {
                        /* MAC0 enabled, only init radia B.   */
                        true_bpath = true;
                }
        }

        for (rfpath = 0; rfpath < rtlphy->num_total_rfpath; rfpath++) {
                /* Mac1 use PHY0 write */
                if (mac1_initradioa_first) {
                        if (rfpath == RF90_PATH_A) {
                                rtlhal->during_mac1init_radioa = true;
                                need_pwrdown_radioa = true;
                        } else if (rfpath == RF90_PATH_B) {
                                rtlhal->during_mac1init_radioa = false;
                                mac1_initradioa_first = false;
                                rfpath = RF90_PATH_A;
                                true_bpath = true;
                                rtlphy->num_total_rfpath = 1;
                        }
                } else if (mac0_initradiob_first) {
                        /* Mac0 use PHY1 write */
                        if (rfpath == RF90_PATH_A)
                                rtlhal->during_mac0init_radiob = false;
                        if (rfpath == RF90_PATH_B) {
                                rtlhal->during_mac0init_radiob = true;
                                mac0_initradiob_first = false;
                                need_pwrdown_radiob = true;
                                rfpath = RF90_PATH_A;
                                true_bpath = true;
                                rtlphy->num_total_rfpath = 1;
                        }
                }

                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);

                /* Set bit number of Address and Data for RF register */
                rtl_set_bbreg(hw, pphyreg->rfhssi_para2,
                              B3WIREADDRESSLENGTH, 0x0);
                udelay(1);
                rtl_set_bbreg(hw, pphyreg->rfhssi_para2, B3WIREDATALENGTH, 0x0);
                udelay(1);

                switch (rfpath) {
                case RF90_PATH_A:
                        if (true_bpath)
                                rtstatus = rtl92du_phy_config_rf_with_headerfile(
                                                hw, radiob_txt,
                                                (enum radio_path)rfpath);
                        else
                                rtstatus = rtl92du_phy_config_rf_with_headerfile(
                                                hw, radioa_txt,
                                                (enum radio_path)rfpath);
                        break;
                case RF90_PATH_B:
                        rtstatus =
                            rtl92du_phy_config_rf_with_headerfile(hw, radiob_txt,
                                                (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) {
                        rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE,
                                "Radio[%d] Fail!!\n", rfpath);
                        return rtstatus;
                }
        }

        /* check MAC0 enable or not again, if enabled,
         * not power down radio A.
         * check MAC1 enable or not again, if enabled,
         * not power down radio B.
         */
        if (need_pwrdown_radioa)
                rtl92du_phy_powerdown_anotherphy(hw, false);
        else if (need_pwrdown_radiob)
                rtl92du_phy_powerdown_anotherphy(hw, true);
        rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "<---\n");

        return rtstatus;
}