mirror of
https://github.com/outbackdingo/mt76.git
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Lorenzo BianconiandFelix Fietkau
b9a50da503
In order to make the code more readable, rely on mt7915_eeprom_field definitions for eeprom parsing Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
157 lines
3.1 KiB
C
157 lines
3.1 KiB
C
// SPDX-License-Identifier: ISC
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/* Copyright (C) 2020 MediaTek Inc. */
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#include "mt7915.h"
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#include "eeprom.h"
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static u32 mt7915_eeprom_read(struct mt7915_dev *dev, u32 offset)
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{
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u8 *data = dev->mt76.eeprom.data;
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if (data[offset] == 0xff)
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mt7915_mcu_get_eeprom(dev, offset);
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return data[offset];
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}
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static int mt7915_eeprom_load(struct mt7915_dev *dev)
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{
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int ret;
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ret = mt76_eeprom_init(&dev->mt76, MT7915_EEPROM_SIZE);
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if (ret < 0)
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return ret;
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memset(dev->mt76.eeprom.data, -1, MT7915_EEPROM_SIZE);
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return 0;
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}
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static int mt7915_check_eeprom(struct mt7915_dev *dev)
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{
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u8 *eeprom = dev->mt76.eeprom.data;
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u16 val;
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mt7915_eeprom_read(dev, MT_EE_CHIP_ID);
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val = get_unaligned_le16(eeprom);
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switch (val) {
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case 0x7915:
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return 0;
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default:
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return -EINVAL;
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}
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}
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static void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev)
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{
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u8 *eeprom = dev->mt76.eeprom.data;
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u8 tx_mask, max_nss = 4;
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u32 val = mt7915_eeprom_read(dev, MT_EE_WIFI_CONF);
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val = FIELD_GET(MT_EE_WIFI_CONF_BAND_SEL, val);
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switch (val) {
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case MT_EE_5GHZ:
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dev->mt76.cap.has_5ghz = true;
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break;
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case MT_EE_2GHZ:
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dev->mt76.cap.has_2ghz = true;
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break;
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default:
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dev->mt76.cap.has_2ghz = true;
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dev->mt76.cap.has_5ghz = true;
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break;
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}
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/* read tx mask from eeprom */
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tx_mask = FIELD_GET(MT_EE_WIFI_CONF_TX_MASK,
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eeprom[MT_EE_WIFI_CONF]);
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if (!tx_mask || tx_mask > max_nss)
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tx_mask = max_nss;
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dev->chainmask = BIT(tx_mask) - 1;
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dev->mphy.antenna_mask = dev->chainmask;
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dev->phy.chainmask = dev->chainmask;
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}
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int mt7915_eeprom_init(struct mt7915_dev *dev)
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{
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int ret;
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ret = mt7915_eeprom_load(dev);
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if (ret < 0)
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return ret;
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ret = mt7915_check_eeprom(dev);
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if (ret)
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return ret;
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mt7915_eeprom_parse_hw_cap(dev);
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memcpy(dev->mt76.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
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ETH_ALEN);
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mt76_eeprom_override(&dev->mt76);
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return 0;
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}
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int mt7915_eeprom_get_target_power(struct mt7915_dev *dev,
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struct ieee80211_channel *chan,
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u8 chain_idx)
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{
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int index;
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bool tssi_on;
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if (chain_idx > 3)
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return -EINVAL;
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tssi_on = mt7915_tssi_enabled(dev, chan->band);
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if (chan->band == NL80211_BAND_2GHZ) {
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index = MT_EE_TX0_POWER_2G + chain_idx * 3 + !tssi_on;
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} else {
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int group = tssi_on ?
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mt7915_get_channel_group(chan->hw_value) : 8;
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index = MT_EE_TX0_POWER_5G + chain_idx * 12 + group;
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}
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return mt7915_eeprom_read(dev, index);
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}
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s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band)
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{
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u32 val;
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s8 delta;
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if (band == NL80211_BAND_2GHZ)
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val = mt7915_eeprom_read(dev, MT_EE_RATE_DELTA_2G);
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else
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val = mt7915_eeprom_read(dev, MT_EE_RATE_DELTA_5G);
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if (!(val & MT_EE_RATE_DELTA_EN))
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return 0;
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delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val);
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return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta;
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}
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const u8 mt7915_sku_group_len[] = {
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[SKU_CCK] = 4,
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[SKU_OFDM] = 8,
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[SKU_HT_BW20] = 8,
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[SKU_HT_BW40] = 9,
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[SKU_VHT_BW20] = 12,
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[SKU_VHT_BW40] = 12,
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[SKU_VHT_BW80] = 12,
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[SKU_VHT_BW160] = 12,
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[SKU_HE_RU26] = 12,
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[SKU_HE_RU52] = 12,
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[SKU_HE_RU106] = 12,
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[SKU_HE_RU242] = 12,
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[SKU_HE_RU484] = 12,
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[SKU_HE_RU996] = 12,
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[SKU_HE_RU2x996] = 12
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};
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