Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 345 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
new file mode 100644
index 000000000..f0ec000d4
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
@@ -0,0 +1,345 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc. */
+
+#include <linux/firmware.h>
+#include "mt7915.h"
+#include "eeprom.h"
+
+static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)
+{
+	struct mt76_dev *mdev = &dev->mt76;
+	u8 *eeprom = mdev->eeprom.data;
+	u32 val = eeprom[MT_EE_DO_PRE_CAL];
+	u32 offs;
+
+	if (!dev->flash_mode)
+		return 0;
+
+	if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP))
+		return 0;
+
+	val = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE;
+	dev->cal = devm_kzalloc(mdev->dev, val, GFP_KERNEL);
+	if (!dev->cal)
+		return -ENOMEM;
+
+	offs = is_mt7915(&dev->mt76) ? MT_EE_PRECAL : MT_EE_PRECAL_V2;
+
+	return mt76_get_of_eeprom(mdev, dev->cal, offs, val);
+}
+
+static int mt7915_check_eeprom(struct mt7915_dev *dev)
+{
+	u8 *eeprom = dev->mt76.eeprom.data;
+	u16 val = get_unaligned_le16(eeprom);
+
+	switch (val) {
+	case 0x7915:
+	case 0x7916:
+	case 0x7986:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static char *mt7915_eeprom_name(struct mt7915_dev *dev)
+{
+	switch (mt76_chip(&dev->mt76)) {
+	case 0x7915:
+		return dev->dbdc_support ?
+		       MT7915_EEPROM_DEFAULT_DBDC : MT7915_EEPROM_DEFAULT;
+	case 0x7986:
+		switch (mt7915_check_adie(dev, true)) {
+		case MT7976_ONE_ADIE_DBDC:
+			return MT7986_EEPROM_MT7976_DEFAULT_DBDC;
+		case MT7975_ONE_ADIE:
+			return MT7986_EEPROM_MT7975_DEFAULT;
+		case MT7976_ONE_ADIE:
+			return MT7986_EEPROM_MT7976_DEFAULT;
+		case MT7975_DUAL_ADIE:
+			return MT7986_EEPROM_MT7975_DUAL_DEFAULT;
+		case MT7976_DUAL_ADIE:
+			return MT7986_EEPROM_MT7976_DUAL_DEFAULT;
+		default:
+			break;
+		}
+		return NULL;
+	default:
+		return MT7916_EEPROM_DEFAULT;
+	}
+}
+
+static int
+mt7915_eeprom_load_default(struct mt7915_dev *dev)
+{
+	u8 *eeprom = dev->mt76.eeprom.data;
+	const struct firmware *fw = NULL;
+	int ret;
+
+	ret = request_firmware(&fw, mt7915_eeprom_name(dev), dev->mt76.dev);
+	if (ret)
+		return ret;
+
+	if (!fw || !fw->data) {
+		dev_err(dev->mt76.dev, "Invalid default bin\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	memcpy(eeprom, fw->data, mt7915_eeprom_size(dev));
+	dev->flash_mode = true;
+
+out:
+	release_firmware(fw);
+
+	return ret;
+}
+
+static int mt7915_eeprom_load(struct mt7915_dev *dev)
+{
+	int ret;
+	u16 eeprom_size = mt7915_eeprom_size(dev);
+
+	ret = mt76_eeprom_init(&dev->mt76, eeprom_size);
+	if (ret < 0)
+		return ret;
+
+	if (ret) {
+		dev->flash_mode = true;
+	} else {
+		u8 free_block_num;
+		u32 block_num, i;
+		u32 eeprom_blk_size = MT7915_EEPROM_BLOCK_SIZE;
+
+		ret = mt7915_mcu_get_eeprom_free_block(dev, &free_block_num);
+		if (ret < 0)
+			return ret;
+
+		/* efuse info isn't enough */
+		if (free_block_num >= 29)
+			return -EINVAL;
+
+		/* read eeprom data from efuse */
+		block_num = DIV_ROUND_UP(eeprom_size, eeprom_blk_size);
+		for (i = 0; i < block_num; i++) {
+			ret = mt7915_mcu_get_eeprom(dev, i * eeprom_blk_size);
+			if (ret < 0)
+				return ret;
+		}
+	}
+
+	return mt7915_check_eeprom(dev);
+}
+
+static void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy)
+{
+	struct mt7915_dev *dev = phy->dev;
+	u8 *eeprom = dev->mt76.eeprom.data;
+	u32 val;
+
+	val = eeprom[MT_EE_WIFI_CONF + phy->band_idx];
+	val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val);
+
+	if (!is_mt7915(&dev->mt76)) {
+		switch (val) {
+		case MT_EE_V2_BAND_SEL_5GHZ:
+			phy->mt76->cap.has_5ghz = true;
+			return;
+		case MT_EE_V2_BAND_SEL_6GHZ:
+			phy->mt76->cap.has_6ghz = true;
+			return;
+		case MT_EE_V2_BAND_SEL_5GHZ_6GHZ:
+			phy->mt76->cap.has_5ghz = true;
+			phy->mt76->cap.has_6ghz = true;
+			return;
+		default:
+			phy->mt76->cap.has_2ghz = true;
+			return;
+		}
+	} else if (val == MT_EE_BAND_SEL_DEFAULT && dev->dbdc_support) {
+		val = phy->band_idx ? MT_EE_BAND_SEL_5GHZ : MT_EE_BAND_SEL_2GHZ;
+	}
+
+	switch (val) {
+	case MT_EE_BAND_SEL_5GHZ:
+		phy->mt76->cap.has_5ghz = true;
+		break;
+	case MT_EE_BAND_SEL_2GHZ:
+		phy->mt76->cap.has_2ghz = true;
+		break;
+	default:
+		phy->mt76->cap.has_2ghz = true;
+		phy->mt76->cap.has_5ghz = true;
+		break;
+	}
+}
+
+void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev,
+				struct mt7915_phy *phy)
+{
+	u8 path, nss, nss_max = 4, *eeprom = dev->mt76.eeprom.data;
+	struct mt76_phy *mphy = phy->mt76;
+
+	mt7915_eeprom_parse_band_config(phy);
+
+	/* read tx/rx path from eeprom */
+	if (is_mt7915(&dev->mt76)) {
+		path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH,
+				 eeprom[MT_EE_WIFI_CONF]);
+	} else {
+		path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH,
+				 eeprom[MT_EE_WIFI_CONF + phy->band_idx]);
+	}
+
+	if (!path || path > 4)
+		path = 4;
+
+	/* read tx/rx stream */
+	nss = path;
+	if (dev->dbdc_support) {
+		if (is_mt7915(&dev->mt76)) {
+			path = min_t(u8, path, 2);
+			nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0,
+					eeprom[MT_EE_WIFI_CONF + 3]);
+			if (phy->band_idx)
+				nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B1,
+						eeprom[MT_EE_WIFI_CONF + 3]);
+		} else {
+			nss = FIELD_GET(MT_EE_WIFI_CONF_STREAM_NUM,
+					eeprom[MT_EE_WIFI_CONF + 2 + phy->band_idx]);
+		}
+
+		if (!is_mt7986(&dev->mt76))
+			nss_max = 2;
+	}
+
+	if (!nss)
+		nss = nss_max;
+	nss = min_t(u8, min_t(u8, nss_max, nss), path);
+
+	mphy->chainmask = BIT(path) - 1;
+	if (phy->band_idx)
+		mphy->chainmask <<= dev->chainshift;
+	mphy->antenna_mask = BIT(nss) - 1;
+	dev->chainmask |= mphy->chainmask;
+	dev->chainshift = hweight8(dev->mphy.chainmask);
+}
+
+int mt7915_eeprom_init(struct mt7915_dev *dev)
+{
+	int ret;
+
+	ret = mt7915_eeprom_load(dev);
+	if (ret < 0) {
+		if (ret != -EINVAL)
+			return ret;
+
+		dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n");
+		ret = mt7915_eeprom_load_default(dev);
+		if (ret)
+			return ret;
+	}
+
+	ret = mt7915_eeprom_load_precal(dev);
+	if (ret)
+		return ret;
+
+	mt7915_eeprom_parse_hw_cap(dev, &dev->phy);
+	memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
+	       ETH_ALEN);
+
+	mt76_eeprom_override(&dev->mphy);
+
+	return 0;
+}
+
+int mt7915_eeprom_get_target_power(struct mt7915_dev *dev,
+				   struct ieee80211_channel *chan,
+				   u8 chain_idx)
+{
+	u8 *eeprom = dev->mt76.eeprom.data;
+	int index, target_power;
+	bool tssi_on, is_7976;
+
+	if (chain_idx > 3)
+		return -EINVAL;
+
+	tssi_on = mt7915_tssi_enabled(dev, chan->band);
+	is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76);
+
+	if (chan->band == NL80211_BAND_2GHZ) {
+		if (is_7976) {
+			index = MT_EE_TX0_POWER_2G_V2 + chain_idx;
+			target_power = eeprom[index];
+		} else {
+			index = MT_EE_TX0_POWER_2G + chain_idx * 3;
+			target_power = eeprom[index];
+
+			if (!tssi_on)
+				target_power += eeprom[index + 1];
+		}
+	} else if (chan->band == NL80211_BAND_5GHZ) {
+		int group = mt7915_get_channel_group_5g(chan->hw_value, is_7976);
+
+		if (is_7976) {
+			index = MT_EE_TX0_POWER_5G_V2 + chain_idx * 5;
+			target_power = eeprom[index + group];
+		} else {
+			index = MT_EE_TX0_POWER_5G + chain_idx * 12;
+			target_power = eeprom[index + group];
+
+			if (!tssi_on)
+				target_power += eeprom[index + 8];
+		}
+	} else {
+		int group = mt7915_get_channel_group_6g(chan->hw_value);
+
+		index = MT_EE_TX0_POWER_6G_V2 + chain_idx * 8;
+		target_power = is_7976 ? eeprom[index + group] : 0;
+	}
+
+	return target_power;
+}
+
+s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band)
+{
+	u8 *eeprom = dev->mt76.eeprom.data;
+	u32 val, offs;
+	s8 delta;
+	bool is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76);
+
+	if (band == NL80211_BAND_2GHZ)
+		offs = is_7976 ? MT_EE_RATE_DELTA_2G_V2 : MT_EE_RATE_DELTA_2G;
+	else if (band == NL80211_BAND_5GHZ)
+		offs = is_7976 ? MT_EE_RATE_DELTA_5G_V2 : MT_EE_RATE_DELTA_5G;
+	else
+		offs = is_7976 ? MT_EE_RATE_DELTA_6G_V2 : 0;
+
+	val = eeprom[offs];
+
+	if (!offs || !(val & MT_EE_RATE_DELTA_EN))
+		return 0;
+
+	delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val);
+
+	return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta;
+}
+
+const u8 mt7915_sku_group_len[] = {
+	[SKU_CCK] = 4,
+	[SKU_OFDM] = 8,
+	[SKU_HT_BW20] = 8,
+	[SKU_HT_BW40] = 9,
+	[SKU_VHT_BW20] = 12,
+	[SKU_VHT_BW40] = 12,
+	[SKU_VHT_BW80] = 12,
+	[SKU_VHT_BW160] = 12,
+	[SKU_HE_RU26] = 12,
+	[SKU_HE_RU52] = 12,
+	[SKU_HE_RU106] = 12,
+	[SKU_HE_RU242] = 12,
+	[SKU_HE_RU484] = 12,
+	[SKU_HE_RU996] = 12,
+	[SKU_HE_RU2x996] = 12
+};