developer | 0f312e8 | 2022-11-01 12:31:52 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* |
| 3 | * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
| 4 | */ |
| 5 | |
| 6 | #include "mt76x2u.h" |
| 7 | #include "eeprom.h" |
| 8 | |
| 9 | static void mt76x2u_mac_fixup_xtal(struct mt76x02_dev *dev) |
| 10 | { |
| 11 | s8 offset = 0; |
| 12 | u16 eep_val; |
| 13 | |
| 14 | eep_val = mt76x02_eeprom_get(dev, MT_EE_XTAL_TRIM_2); |
| 15 | |
| 16 | offset = eep_val & 0x7f; |
| 17 | if ((eep_val & 0xff) == 0xff) |
| 18 | offset = 0; |
| 19 | else if (eep_val & 0x80) |
| 20 | offset = 0 - offset; |
| 21 | |
| 22 | eep_val >>= 8; |
| 23 | if (eep_val == 0x00 || eep_val == 0xff) { |
| 24 | eep_val = mt76x02_eeprom_get(dev, MT_EE_XTAL_TRIM_1); |
| 25 | eep_val &= 0xff; |
| 26 | |
| 27 | if (eep_val == 0x00 || eep_val == 0xff) |
| 28 | eep_val = 0x14; |
| 29 | } |
| 30 | |
| 31 | eep_val &= 0x7f; |
| 32 | mt76_rmw_field(dev, MT_VEND_ADDR(CFG, MT_XO_CTRL5), |
| 33 | MT_XO_CTRL5_C2_VAL, eep_val + offset); |
| 34 | mt76_set(dev, MT_VEND_ADDR(CFG, MT_XO_CTRL6), MT_XO_CTRL6_C2_CTRL); |
| 35 | |
| 36 | mt76_wr(dev, 0x504, 0x06000000); |
| 37 | mt76_wr(dev, 0x50c, 0x08800000); |
| 38 | mdelay(5); |
| 39 | mt76_wr(dev, 0x504, 0x0); |
| 40 | |
| 41 | /* decrease SIFS from 16us to 13us */ |
| 42 | mt76_rmw_field(dev, MT_XIFS_TIME_CFG, |
| 43 | MT_XIFS_TIME_CFG_OFDM_SIFS, 0xd); |
| 44 | mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG, MT_BKOFF_SLOT_CFG_CC_DELAY, 1); |
| 45 | |
| 46 | /* init fce */ |
| 47 | mt76_clear(dev, MT_FCE_L2_STUFF, MT_FCE_L2_STUFF_WR_MPDU_LEN_EN); |
| 48 | |
| 49 | eep_val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_2); |
| 50 | switch (FIELD_GET(MT_EE_NIC_CONF_2_XTAL_OPTION, eep_val)) { |
| 51 | case 0: |
| 52 | mt76_wr(dev, MT_XO_CTRL7, 0x5c1fee80); |
| 53 | break; |
| 54 | case 1: |
| 55 | mt76_wr(dev, MT_XO_CTRL7, 0x5c1feed0); |
| 56 | break; |
| 57 | default: |
| 58 | break; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | int mt76x2u_mac_reset(struct mt76x02_dev *dev) |
| 63 | { |
| 64 | mt76_wr(dev, MT_WPDMA_GLO_CFG, BIT(4) | BIT(5)); |
| 65 | |
| 66 | /* init pbf regs */ |
| 67 | mt76_wr(dev, MT_PBF_TX_MAX_PCNT, 0xefef3f1f); |
| 68 | mt76_wr(dev, MT_PBF_RX_MAX_PCNT, 0xfebf); |
| 69 | |
| 70 | mt76_write_mac_initvals(dev); |
| 71 | |
| 72 | mt76_wr(dev, MT_TX_LINK_CFG, 0x1020); |
| 73 | mt76_wr(dev, MT_AUTO_RSP_CFG, 0x13); |
| 74 | mt76_wr(dev, MT_MAX_LEN_CFG, 0x2f00); |
| 75 | |
| 76 | mt76_wr(dev, MT_WMM_AIFSN, 0x2273); |
| 77 | mt76_wr(dev, MT_WMM_CWMIN, 0x2344); |
| 78 | mt76_wr(dev, MT_WMM_CWMAX, 0x34aa); |
| 79 | |
| 80 | mt76_clear(dev, MT_MAC_SYS_CTRL, |
| 81 | MT_MAC_SYS_CTRL_RESET_CSR | |
| 82 | MT_MAC_SYS_CTRL_RESET_BBP); |
| 83 | |
| 84 | if (is_mt7612(dev)) |
| 85 | mt76_clear(dev, MT_COEXCFG0, MT_COEXCFG0_COEX_EN); |
| 86 | |
| 87 | mt76_set(dev, MT_EXT_CCA_CFG, 0xf000); |
| 88 | mt76_clear(dev, MT_TX_ALC_CFG_4, BIT(31)); |
| 89 | |
| 90 | mt76x2u_mac_fixup_xtal(dev); |
| 91 | |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | int mt76x2u_mac_stop(struct mt76x02_dev *dev) |
| 96 | { |
| 97 | int i, count = 0, val; |
| 98 | bool stopped = false; |
| 99 | u32 rts_cfg; |
| 100 | |
| 101 | if (test_bit(MT76_REMOVED, &dev->mphy.state)) |
| 102 | return -EIO; |
| 103 | |
| 104 | rts_cfg = mt76_rr(dev, MT_TX_RTS_CFG); |
| 105 | mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg & ~MT_TX_RTS_CFG_RETRY_LIMIT); |
| 106 | |
| 107 | mt76_clear(dev, MT_TXOP_CTRL_CFG, MT_TXOP_ED_CCA_EN); |
| 108 | mt76_clear(dev, MT_TXOP_HLDR_ET, MT_TXOP_HLDR_TX40M_BLK_EN); |
| 109 | |
| 110 | /* wait tx dma to stop */ |
| 111 | for (i = 0; i < 2000; i++) { |
| 112 | val = mt76_rr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG)); |
| 113 | if (!(val & MT_USB_DMA_CFG_TX_BUSY) && i > 10) |
| 114 | break; |
| 115 | usleep_range(50, 100); |
| 116 | } |
| 117 | |
| 118 | /* page count on TxQ */ |
| 119 | for (i = 0; i < 200; i++) { |
| 120 | if (!(mt76_rr(dev, 0x0438) & 0xffffffff) && |
| 121 | !(mt76_rr(dev, 0x0a30) & 0x000000ff) && |
| 122 | !(mt76_rr(dev, 0x0a34) & 0xff00ff00)) |
| 123 | break; |
| 124 | usleep_range(10, 20); |
| 125 | } |
| 126 | |
| 127 | /* disable tx-rx */ |
| 128 | mt76_clear(dev, MT_MAC_SYS_CTRL, |
| 129 | MT_MAC_SYS_CTRL_ENABLE_RX | |
| 130 | MT_MAC_SYS_CTRL_ENABLE_TX); |
| 131 | |
| 132 | /* Wait for MAC to become idle */ |
| 133 | for (i = 0; i < 1000; i++) { |
| 134 | if (!(mt76_rr(dev, MT_MAC_STATUS) & MT_MAC_STATUS_TX) && |
| 135 | !mt76_rr(dev, MT_BBP(IBI, 12))) { |
| 136 | stopped = true; |
| 137 | break; |
| 138 | } |
| 139 | usleep_range(10, 20); |
| 140 | } |
| 141 | |
| 142 | if (!stopped) { |
| 143 | mt76_set(dev, MT_BBP(CORE, 4), BIT(1)); |
| 144 | mt76_clear(dev, MT_BBP(CORE, 4), BIT(1)); |
| 145 | |
| 146 | mt76_set(dev, MT_BBP(CORE, 4), BIT(0)); |
| 147 | mt76_clear(dev, MT_BBP(CORE, 4), BIT(0)); |
| 148 | } |
| 149 | |
| 150 | /* page count on RxQ */ |
| 151 | for (i = 0; i < 200; i++) { |
| 152 | if (!(mt76_rr(dev, 0x0430) & 0x00ff0000) && |
| 153 | !(mt76_rr(dev, 0x0a30) & 0xffffffff) && |
| 154 | !(mt76_rr(dev, 0x0a34) & 0xffffffff) && |
| 155 | ++count > 10) |
| 156 | break; |
| 157 | msleep(50); |
| 158 | } |
| 159 | |
| 160 | if (!mt76_poll(dev, MT_MAC_STATUS, MT_MAC_STATUS_RX, 0, 2000)) |
| 161 | dev_warn(dev->mt76.dev, "MAC RX failed to stop\n"); |
| 162 | |
| 163 | /* wait rx dma to stop */ |
| 164 | for (i = 0; i < 2000; i++) { |
| 165 | val = mt76_rr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG)); |
| 166 | if (!(val & MT_USB_DMA_CFG_RX_BUSY) && i > 10) |
| 167 | break; |
| 168 | usleep_range(50, 100); |
| 169 | } |
| 170 | |
| 171 | mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg); |
| 172 | |
| 173 | return 0; |
| 174 | } |