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path: root/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c
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Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c')
-rw-r--r--drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c
new file mode 100644
index 0000000..515bb58
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c
@@ -0,0 +1,215 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2019 MediaTek Inc.
+ *
+ * Author: Ryder Lee <ryder.lee@mediatek.com>
+ * Felix Fietkau <nbd@nbd.name>
+ */
+
+#include "mt7615.h"
+#include "eeprom.h"
+
+static int mt7615_efuse_read(struct mt7615_dev *dev, u32 base,
+ u16 addr, u8 *data)
+{
+ u32 val;
+ int i;
+
+ val = mt76_rr(dev, base + MT_EFUSE_CTRL);
+ val &= ~(MT_EFUSE_CTRL_AIN | MT_EFUSE_CTRL_MODE);
+ val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
+ val |= MT_EFUSE_CTRL_KICK;
+ mt76_wr(dev, base + MT_EFUSE_CTRL, val);
+
+ if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
+ return -ETIMEDOUT;
+
+ udelay(2);
+
+ val = mt76_rr(dev, base + MT_EFUSE_CTRL);
+ if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT ||
+ WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) {
+ memset(data, 0x0, 16);
+ return 0;
+ }
+
+ for (i = 0; i < 4; i++) {
+ val = mt76_rr(dev, base + MT_EFUSE_RDATA(i));
+ put_unaligned_le32(val, data + 4 * i);
+ }
+
+ return 0;
+}
+
+static int mt7615_efuse_init(struct mt7615_dev *dev)
+{
+ u32 val, base = mt7615_reg_map(dev, MT_EFUSE_BASE);
+ int i, len = MT7615_EEPROM_SIZE;
+ void *buf;
+
+ val = mt76_rr(dev, base + MT_EFUSE_BASE_CTRL);
+ if (val & MT_EFUSE_BASE_CTRL_EMPTY)
+ return 0;
+
+ dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL);
+ dev->mt76.otp.size = len;
+ if (!dev->mt76.otp.data)
+ return -ENOMEM;
+
+ buf = dev->mt76.otp.data;
+ for (i = 0; i + 16 <= len; i += 16) {
+ int ret;
+
+ ret = mt7615_efuse_read(dev, base, i, buf + i);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mt7615_eeprom_load(struct mt7615_dev *dev)
+{
+ int ret;
+
+ ret = mt76_eeprom_init(&dev->mt76, MT7615_EEPROM_SIZE);
+ if (ret < 0)
+ return ret;
+
+ return mt7615_efuse_init(dev);
+}
+
+static int mt7615_check_eeprom(struct mt76_dev *dev)
+{
+ u16 val = get_unaligned_le16(dev->eeprom.data);
+
+ switch (val) {
+ case 0x7615:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static void mt7615_eeprom_parse_hw_cap(struct mt7615_dev *dev)
+{
+ u8 val, *eeprom = dev->mt76.eeprom.data;
+
+ val = FIELD_GET(MT_EE_NIC_WIFI_CONF_BAND_SEL,
+ eeprom[MT_EE_WIFI_CONF]);
+ switch (val) {
+ case MT_EE_5GHZ:
+ dev->mt76.cap.has_5ghz = true;
+ break;
+ case MT_EE_2GHZ:
+ dev->mt76.cap.has_2ghz = true;
+ break;
+ default:
+ dev->mt76.cap.has_2ghz = true;
+ dev->mt76.cap.has_5ghz = true;
+ break;
+ }
+}
+
+int mt7615_eeprom_get_power_index(struct mt7615_dev *dev,
+ struct ieee80211_channel *chan,
+ u8 chain_idx)
+{
+ int index;
+
+ if (chain_idx > 3)
+ return -EINVAL;
+
+ /* TSSI disabled */
+ if (mt7615_ext_pa_enabled(dev, chan->band)) {
+ if (chan->band == NL80211_BAND_2GHZ)
+ return MT_EE_EXT_PA_2G_TARGET_POWER;
+ else
+ return MT_EE_EXT_PA_5G_TARGET_POWER;
+ }
+
+ /* TSSI enabled */
+ if (chan->band == NL80211_BAND_2GHZ) {
+ index = MT_EE_TX0_2G_TARGET_POWER + chain_idx * 6;
+ } else {
+ int group = mt7615_get_channel_group(chan->hw_value);
+
+ switch (chain_idx) {
+ case 1:
+ index = MT_EE_TX1_5G_G0_TARGET_POWER;
+ break;
+ case 2:
+ index = MT_EE_TX2_5G_G0_TARGET_POWER;
+ break;
+ case 3:
+ index = MT_EE_TX3_5G_G0_TARGET_POWER;
+ break;
+ case 0:
+ default:
+ index = MT_EE_TX0_5G_G0_TARGET_POWER;
+ break;
+ }
+ index += 5 * group;
+ }
+
+ return index;
+}
+
+static void mt7615_apply_cal_free_data(struct mt7615_dev *dev)
+{
+ static const u16 ical[] = {
+ 0x53, 0x54, 0x55, 0x56, 0x57, 0x5c, 0x5d, 0x62, 0x63, 0x68,
+ 0x69, 0x6e, 0x6f, 0x73, 0x74, 0x78, 0x79, 0x82, 0x83, 0x87,
+ 0x88, 0x8c, 0x8d, 0x91, 0x92, 0x96, 0x97, 0x9b, 0x9c, 0xa0,
+ 0xa1, 0xaa, 0xab, 0xaf, 0xb0, 0xb4, 0xb5, 0xb9, 0xba, 0xf4,
+ 0xf7, 0xff,
+ 0x140, 0x141, 0x145, 0x146, 0x14a, 0x14b, 0x154, 0x155, 0x159,
+ 0x15a, 0x15e, 0x15f, 0x163, 0x164, 0x168, 0x169, 0x16d, 0x16e,
+ 0x172, 0x173, 0x17c, 0x17d, 0x181, 0x182, 0x186, 0x187, 0x18b,
+ 0x18c
+ };
+ static const u16 ical_nocheck[] = {
+ 0x110, 0x111, 0x112, 0x113, 0x114, 0x115, 0x116, 0x117, 0x118,
+ 0x1b5, 0x1b6, 0x1b7, 0x3ac, 0x3ad, 0x3ae, 0x3af, 0x3b0, 0x3b1,
+ 0x3b2
+ };
+ u8 *eeprom = dev->mt76.eeprom.data;
+ u8 *otp = dev->mt76.otp.data;
+ int i;
+
+ if (!otp)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(ical); i++)
+ if (!otp[ical[i]])
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(ical); i++)
+ eeprom[ical[i]] = otp[ical[i]];
+
+ for (i = 0; i < ARRAY_SIZE(ical_nocheck); i++)
+ eeprom[ical_nocheck[i]] = otp[ical_nocheck[i]];
+}
+
+int mt7615_eeprom_init(struct mt7615_dev *dev)
+{
+ int ret;
+
+ ret = mt7615_eeprom_load(dev);
+ if (ret < 0)
+ return ret;
+
+ ret = mt7615_check_eeprom(&dev->mt76);
+ if (ret && dev->mt76.otp.data)
+ memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data,
+ MT7615_EEPROM_SIZE);
+ else
+ mt7615_apply_cal_free_data(dev);
+
+ mt7615_eeprom_parse_hw_cap(dev);
+ memcpy(dev->mt76.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
+ ETH_ALEN);
+
+ mt76_eeprom_override(&dev->mt76);
+
+ return 0;
+}