17f17b86aSRyder Lee // SPDX-License-Identifier: ISC 2c8846e10SFelix Fietkau 36d3390a6SFelix Fietkau #include <linux/of.h> 4c8846e10SFelix Fietkau #include "mt7603.h" 5c8846e10SFelix Fietkau #include "eeprom.h" 6c8846e10SFelix Fietkau 7c8846e10SFelix Fietkau static int 8c8846e10SFelix Fietkau mt7603_efuse_read(struct mt7603_dev *dev, u32 base, u16 addr, u8 *data) 9c8846e10SFelix Fietkau { 10c8846e10SFelix Fietkau u32 val; 11c8846e10SFelix Fietkau int i; 12c8846e10SFelix Fietkau 13c8846e10SFelix Fietkau val = mt76_rr(dev, base + MT_EFUSE_CTRL); 14c8846e10SFelix Fietkau val &= ~(MT_EFUSE_CTRL_AIN | 15c8846e10SFelix Fietkau MT_EFUSE_CTRL_MODE); 16c8846e10SFelix Fietkau val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf); 17c8846e10SFelix Fietkau val |= MT_EFUSE_CTRL_KICK; 18c8846e10SFelix Fietkau mt76_wr(dev, base + MT_EFUSE_CTRL, val); 19c8846e10SFelix Fietkau 20c8846e10SFelix Fietkau if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000)) 21c8846e10SFelix Fietkau return -ETIMEDOUT; 22c8846e10SFelix Fietkau 23c8846e10SFelix Fietkau udelay(2); 24c8846e10SFelix Fietkau 25c8846e10SFelix Fietkau val = mt76_rr(dev, base + MT_EFUSE_CTRL); 26c8846e10SFelix Fietkau if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT || 27c8846e10SFelix Fietkau WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) { 28c8846e10SFelix Fietkau memset(data, 0xff, 16); 29c8846e10SFelix Fietkau return 0; 30c8846e10SFelix Fietkau } 31c8846e10SFelix Fietkau 32c8846e10SFelix Fietkau for (i = 0; i < 4; i++) { 33c8846e10SFelix Fietkau val = mt76_rr(dev, base + MT_EFUSE_RDATA(i)); 34c8846e10SFelix Fietkau put_unaligned_le32(val, data + 4 * i); 35c8846e10SFelix Fietkau } 36c8846e10SFelix Fietkau 37c8846e10SFelix Fietkau return 0; 38c8846e10SFelix Fietkau } 39c8846e10SFelix Fietkau 40c8846e10SFelix Fietkau static int 41c8846e10SFelix Fietkau mt7603_efuse_init(struct mt7603_dev *dev) 42c8846e10SFelix Fietkau { 43c8846e10SFelix Fietkau u32 base = mt7603_reg_map(dev, MT_EFUSE_BASE); 44c8846e10SFelix Fietkau int len = MT7603_EEPROM_SIZE; 45c8846e10SFelix Fietkau void *buf; 46c8846e10SFelix Fietkau int ret, i; 47c8846e10SFelix Fietkau 48c8846e10SFelix Fietkau if (mt76_rr(dev, base + MT_EFUSE_BASE_CTRL) & MT_EFUSE_BASE_CTRL_EMPTY) 49c8846e10SFelix Fietkau return 0; 50c8846e10SFelix Fietkau 51c8846e10SFelix Fietkau dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL); 52c8846e10SFelix Fietkau dev->mt76.otp.size = len; 53c8846e10SFelix Fietkau if (!dev->mt76.otp.data) 54c8846e10SFelix Fietkau return -ENOMEM; 55c8846e10SFelix Fietkau 56c8846e10SFelix Fietkau buf = dev->mt76.otp.data; 57c8846e10SFelix Fietkau for (i = 0; i + 16 <= len; i += 16) { 58c8846e10SFelix Fietkau ret = mt7603_efuse_read(dev, base, i, buf + i); 59c8846e10SFelix Fietkau if (ret) 60c8846e10SFelix Fietkau return ret; 61c8846e10SFelix Fietkau } 62c8846e10SFelix Fietkau 63c8846e10SFelix Fietkau return 0; 64c8846e10SFelix Fietkau } 65c8846e10SFelix Fietkau 66c8846e10SFelix Fietkau static bool 67c8846e10SFelix Fietkau mt7603_has_cal_free_data(struct mt7603_dev *dev, u8 *efuse) 68c8846e10SFelix Fietkau { 69c8846e10SFelix Fietkau if (!efuse[MT_EE_TEMP_SENSOR_CAL]) 70c8846e10SFelix Fietkau return false; 71c8846e10SFelix Fietkau 72c8846e10SFelix Fietkau if (get_unaligned_le16(efuse + MT_EE_TX_POWER_0_START_2G) == 0) 73c8846e10SFelix Fietkau return false; 74c8846e10SFelix Fietkau 75c8846e10SFelix Fietkau if (get_unaligned_le16(efuse + MT_EE_TX_POWER_1_START_2G) == 0) 76c8846e10SFelix Fietkau return false; 77c8846e10SFelix Fietkau 78c8846e10SFelix Fietkau if (!efuse[MT_EE_CP_FT_VERSION]) 79c8846e10SFelix Fietkau return false; 80c8846e10SFelix Fietkau 81c8846e10SFelix Fietkau if (!efuse[MT_EE_XTAL_FREQ_OFFSET]) 82c8846e10SFelix Fietkau return false; 83c8846e10SFelix Fietkau 84c8846e10SFelix Fietkau if (!efuse[MT_EE_XTAL_WF_RFCAL]) 85c8846e10SFelix Fietkau return false; 86c8846e10SFelix Fietkau 87c8846e10SFelix Fietkau return true; 88c8846e10SFelix Fietkau } 89c8846e10SFelix Fietkau 90c8846e10SFelix Fietkau static void 91c8846e10SFelix Fietkau mt7603_apply_cal_free_data(struct mt7603_dev *dev, u8 *efuse) 92c8846e10SFelix Fietkau { 93c8846e10SFelix Fietkau static const u8 cal_free_bytes[] = { 94c8846e10SFelix Fietkau MT_EE_TEMP_SENSOR_CAL, 95c8846e10SFelix Fietkau MT_EE_CP_FT_VERSION, 96c8846e10SFelix Fietkau MT_EE_XTAL_FREQ_OFFSET, 97c8846e10SFelix Fietkau MT_EE_XTAL_WF_RFCAL, 98c8846e10SFelix Fietkau /* Skip for MT7628 */ 99c8846e10SFelix Fietkau MT_EE_TX_POWER_0_START_2G, 100c8846e10SFelix Fietkau MT_EE_TX_POWER_0_START_2G + 1, 101c8846e10SFelix Fietkau MT_EE_TX_POWER_1_START_2G, 102c8846e10SFelix Fietkau MT_EE_TX_POWER_1_START_2G + 1, 103c8846e10SFelix Fietkau }; 1046d3390a6SFelix Fietkau struct device_node *np = dev->mt76.dev->of_node; 105c8846e10SFelix Fietkau u8 *eeprom = dev->mt76.eeprom.data; 106c8846e10SFelix Fietkau int n = ARRAY_SIZE(cal_free_bytes); 107c8846e10SFelix Fietkau int i; 108c8846e10SFelix Fietkau 1096d3390a6SFelix Fietkau if (!np || !of_property_read_bool(np, "mediatek,eeprom-merge-otp")) 1106d3390a6SFelix Fietkau return; 1116d3390a6SFelix Fietkau 112c8846e10SFelix Fietkau if (!mt7603_has_cal_free_data(dev, efuse)) 113c8846e10SFelix Fietkau return; 114c8846e10SFelix Fietkau 115c8846e10SFelix Fietkau if (is_mt7628(dev)) 116c8846e10SFelix Fietkau n -= 4; 117c8846e10SFelix Fietkau 118c8846e10SFelix Fietkau for (i = 0; i < n; i++) { 119c8846e10SFelix Fietkau int offset = cal_free_bytes[i]; 120c8846e10SFelix Fietkau 121c8846e10SFelix Fietkau eeprom[offset] = efuse[offset]; 122c8846e10SFelix Fietkau } 123c8846e10SFelix Fietkau } 124c8846e10SFelix Fietkau 125c8846e10SFelix Fietkau static int 126c8846e10SFelix Fietkau mt7603_eeprom_load(struct mt7603_dev *dev) 127c8846e10SFelix Fietkau { 128c8846e10SFelix Fietkau int ret; 129c8846e10SFelix Fietkau 130c8846e10SFelix Fietkau ret = mt76_eeprom_init(&dev->mt76, MT7603_EEPROM_SIZE); 131c8846e10SFelix Fietkau if (ret < 0) 132c8846e10SFelix Fietkau return ret; 133c8846e10SFelix Fietkau 134c8846e10SFelix Fietkau return mt7603_efuse_init(dev); 135c8846e10SFelix Fietkau } 136c8846e10SFelix Fietkau 137c8846e10SFelix Fietkau static int mt7603_check_eeprom(struct mt76_dev *dev) 138c8846e10SFelix Fietkau { 139c8846e10SFelix Fietkau u16 val = get_unaligned_le16(dev->eeprom.data); 140c8846e10SFelix Fietkau 141c8846e10SFelix Fietkau switch (val) { 142c8846e10SFelix Fietkau case 0x7628: 143c8846e10SFelix Fietkau case 0x7603: 144c8846e10SFelix Fietkau return 0; 145c8846e10SFelix Fietkau default: 146c8846e10SFelix Fietkau return -EINVAL; 147c8846e10SFelix Fietkau } 148c8846e10SFelix Fietkau } 149c8846e10SFelix Fietkau 150d407afcbSFelix Fietkau static inline bool is_mt7688(struct mt7603_dev *dev) 151d407afcbSFelix Fietkau { 152d407afcbSFelix Fietkau return mt76_rr(dev, MT_EFUSE_BASE + 0x64) & BIT(4); 153d407afcbSFelix Fietkau } 154d407afcbSFelix Fietkau 155c8846e10SFelix Fietkau int mt7603_eeprom_init(struct mt7603_dev *dev) 156c8846e10SFelix Fietkau { 157d407afcbSFelix Fietkau u8 *eeprom; 158c8846e10SFelix Fietkau int ret; 159c8846e10SFelix Fietkau 160c8846e10SFelix Fietkau ret = mt7603_eeprom_load(dev); 161c8846e10SFelix Fietkau if (ret < 0) 162c8846e10SFelix Fietkau return ret; 163c8846e10SFelix Fietkau 164c8846e10SFelix Fietkau if (dev->mt76.otp.data) { 165c8846e10SFelix Fietkau if (mt7603_check_eeprom(&dev->mt76) == 0) 166c8846e10SFelix Fietkau mt7603_apply_cal_free_data(dev, dev->mt76.otp.data); 167c8846e10SFelix Fietkau else 168c8846e10SFelix Fietkau memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data, 169c8846e10SFelix Fietkau MT7603_EEPROM_SIZE); 170c8846e10SFelix Fietkau } 171c8846e10SFelix Fietkau 172d407afcbSFelix Fietkau eeprom = (u8 *)dev->mt76.eeprom.data; 173c8846e10SFelix Fietkau dev->mt76.cap.has_2ghz = true; 174d407afcbSFelix Fietkau memcpy(dev->mt76.macaddr, eeprom + MT_EE_MAC_ADDR, ETH_ALEN); 175d407afcbSFelix Fietkau 176d407afcbSFelix Fietkau /* Check for 1SS devices */ 177d407afcbSFelix Fietkau dev->mphy.antenna_mask = 3; 178d407afcbSFelix Fietkau if (FIELD_GET(MT_EE_NIC_CONF_0_RX_PATH, eeprom[MT_EE_NIC_CONF_0]) == 1 || 179d407afcbSFelix Fietkau FIELD_GET(MT_EE_NIC_CONF_0_TX_PATH, eeprom[MT_EE_NIC_CONF_0]) == 1 || 180d407afcbSFelix Fietkau is_mt7688(dev)) 181d407afcbSFelix Fietkau dev->mphy.antenna_mask = 1; 182c8846e10SFelix Fietkau 183c8846e10SFelix Fietkau mt76_eeprom_override(&dev->mt76); 184c8846e10SFelix Fietkau 185c8846e10SFelix Fietkau return 0; 186c8846e10SFelix Fietkau } 187