1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* Copyright(c) 2019-2020 Realtek Corporation 3 */ 4 5 #include "coex.h" 6 #include "core.h" 7 #include "debug.h" 8 #include "fw.h" 9 #include "mac.h" 10 #include "ps.h" 11 #include "reg.h" 12 #include "util.h" 13 14 static int rtw89_fw_leave_lps_check(struct rtw89_dev *rtwdev, u8 macid) 15 { 16 u32 pwr_en_bit = 0xE; 17 u32 chk_msk = pwr_en_bit << (4 * macid); 18 u32 polling; 19 int ret; 20 21 ret = read_poll_timeout_atomic(rtw89_read32_mask, polling, !polling, 22 1000, 50000, false, rtwdev, 23 R_AX_PPWRBIT_SETTING, chk_msk); 24 if (ret) { 25 rtw89_info(rtwdev, "rtw89: failed to leave lps state\n"); 26 return -EBUSY; 27 } 28 29 return 0; 30 } 31 32 static void rtw89_ps_power_mode_change_with_hci(struct rtw89_dev *rtwdev, 33 bool enter) 34 { 35 ieee80211_stop_queues(rtwdev->hw); 36 rtwdev->hci.paused = true; 37 flush_work(&rtwdev->txq_work); 38 ieee80211_wake_queues(rtwdev->hw); 39 40 rtw89_hci_pause(rtwdev, true); 41 rtw89_mac_power_mode_change(rtwdev, enter); 42 rtw89_hci_switch_mode(rtwdev, enter); 43 rtw89_hci_pause(rtwdev, false); 44 45 rtwdev->hci.paused = false; 46 47 if (!enter) { 48 local_bh_disable(); 49 napi_schedule(&rtwdev->napi); 50 local_bh_enable(); 51 } 52 } 53 54 static void rtw89_ps_power_mode_change(struct rtw89_dev *rtwdev, bool enter) 55 { 56 if (rtwdev->chip->low_power_hci_modes & BIT(rtwdev->ps_mode)) 57 rtw89_ps_power_mode_change_with_hci(rtwdev, enter); 58 else 59 rtw89_mac_power_mode_change(rtwdev, enter); 60 } 61 62 static void __rtw89_enter_ps_mode(struct rtw89_dev *rtwdev) 63 { 64 if (!rtwdev->ps_mode) 65 return; 66 67 if (test_and_set_bit(RTW89_FLAG_LOW_POWER_MODE, rtwdev->flags)) 68 return; 69 70 rtw89_ps_power_mode_change(rtwdev, true); 71 } 72 73 void __rtw89_leave_ps_mode(struct rtw89_dev *rtwdev) 74 { 75 if (!rtwdev->ps_mode) 76 return; 77 78 if (test_and_clear_bit(RTW89_FLAG_LOW_POWER_MODE, rtwdev->flags)) 79 rtw89_ps_power_mode_change(rtwdev, false); 80 } 81 82 static void __rtw89_enter_lps(struct rtw89_dev *rtwdev, u8 mac_id) 83 { 84 struct rtw89_lps_parm lps_param = { 85 .macid = mac_id, 86 .psmode = RTW89_MAC_AX_PS_MODE_LEGACY, 87 .lastrpwm = RTW89_LAST_RPWM_PS, 88 }; 89 90 rtw89_btc_ntfy_radio_state(rtwdev, BTC_RFCTRL_FW_CTRL); 91 rtw89_fw_h2c_lps_parm(rtwdev, &lps_param); 92 } 93 94 static void __rtw89_leave_lps(struct rtw89_dev *rtwdev, u8 mac_id) 95 { 96 struct rtw89_lps_parm lps_param = { 97 .macid = mac_id, 98 .psmode = RTW89_MAC_AX_PS_MODE_ACTIVE, 99 .lastrpwm = RTW89_LAST_RPWM_ACTIVE, 100 }; 101 102 rtw89_fw_h2c_lps_parm(rtwdev, &lps_param); 103 rtw89_fw_leave_lps_check(rtwdev, 0); 104 rtw89_btc_ntfy_radio_state(rtwdev, BTC_RFCTRL_WL_ON); 105 } 106 107 void rtw89_leave_ps_mode(struct rtw89_dev *rtwdev) 108 { 109 lockdep_assert_held(&rtwdev->mutex); 110 111 __rtw89_leave_ps_mode(rtwdev); 112 } 113 114 void rtw89_enter_lps(struct rtw89_dev *rtwdev, u8 mac_id) 115 { 116 lockdep_assert_held(&rtwdev->mutex); 117 118 if (test_and_set_bit(RTW89_FLAG_LEISURE_PS, rtwdev->flags)) 119 return; 120 121 __rtw89_enter_lps(rtwdev, mac_id); 122 __rtw89_enter_ps_mode(rtwdev); 123 } 124 125 static void rtw89_leave_lps_vif(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif) 126 { 127 if (rtwvif->wifi_role != RTW89_WIFI_ROLE_STATION) 128 return; 129 130 __rtw89_leave_lps(rtwdev, rtwvif->mac_id); 131 } 132 133 void rtw89_leave_lps(struct rtw89_dev *rtwdev) 134 { 135 struct rtw89_vif *rtwvif; 136 137 lockdep_assert_held(&rtwdev->mutex); 138 139 if (!test_and_clear_bit(RTW89_FLAG_LEISURE_PS, rtwdev->flags)) 140 return; 141 142 __rtw89_leave_ps_mode(rtwdev); 143 144 rtw89_for_each_rtwvif(rtwdev, rtwvif) 145 rtw89_leave_lps_vif(rtwdev, rtwvif); 146 } 147 148 void rtw89_enter_ips(struct rtw89_dev *rtwdev) 149 { 150 struct rtw89_vif *rtwvif; 151 152 set_bit(RTW89_FLAG_INACTIVE_PS, rtwdev->flags); 153 154 rtw89_for_each_rtwvif(rtwdev, rtwvif) 155 rtw89_mac_vif_deinit(rtwdev, rtwvif); 156 157 rtw89_core_stop(rtwdev); 158 } 159 160 void rtw89_leave_ips(struct rtw89_dev *rtwdev) 161 { 162 struct rtw89_vif *rtwvif; 163 int ret; 164 165 ret = rtw89_core_start(rtwdev); 166 if (ret) 167 rtw89_err(rtwdev, "failed to leave idle state\n"); 168 169 rtw89_set_channel(rtwdev); 170 171 rtw89_for_each_rtwvif(rtwdev, rtwvif) 172 rtw89_mac_vif_init(rtwdev, rtwvif); 173 174 clear_bit(RTW89_FLAG_INACTIVE_PS, rtwdev->flags); 175 } 176 177 void rtw89_set_coex_ctrl_lps(struct rtw89_dev *rtwdev, bool btc_ctrl) 178 { 179 if (btc_ctrl) 180 rtw89_leave_lps(rtwdev); 181 } 182