From: Ming Yen Hsieh mingyen.hsieh@mediatek.com
[ Upstream commit f2027ef3f733d3f0bb7f27fa3343784058f946ab ]
Read the EEPROM to determine the hardware type and uses this to load the correct CLC data.
Signed-off-by: Ming Yen Hsieh mingyen.hsieh@mediatek.com Link: https://patch.msgid.link/20250304113649.867387-1-mingyen.hsieh@mediatek.com Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/mediatek/mt76/mt7925/mcu.c | 61 ++++++++++++++++++- .../wireless/mediatek/mt76/mt7925/mt7925.h | 3 + 2 files changed, 63 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c index b8cd7cd3d832b..a1d6fd5888f54 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c @@ -631,6 +631,54 @@ int mt7925_mcu_uni_rx_ba(struct mt792x_dev *dev, enable, false); }
+static int mt7925_mcu_read_eeprom(struct mt792x_dev *dev, u32 offset, u8 *val) +{ + struct { + u8 rsv[4]; + + __le16 tag; + __le16 len; + + __le32 addr; + __le32 valid; + u8 data[MT7925_EEPROM_BLOCK_SIZE]; + } __packed req = { + .tag = cpu_to_le16(1), + .len = cpu_to_le16(sizeof(req) - 4), + .addr = cpu_to_le32(round_down(offset, + MT7925_EEPROM_BLOCK_SIZE)), + }; + struct evt { + u8 rsv[4]; + + __le16 tag; + __le16 len; + + __le32 ver; + __le32 addr; + __le32 valid; + __le32 size; + __le32 magic_num; + __le32 type; + __le32 rsv1[4]; + u8 data[32]; + } __packed *res; + struct sk_buff *skb; + int ret; + + ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_WM_UNI_CMD_QUERY(EFUSE_CTRL), + &req, sizeof(req), true, &skb); + if (ret) + return ret; + + res = (struct evt *)skb->data; + *val = res->data[offset % MT7925_EEPROM_BLOCK_SIZE]; + + dev_kfree_skb(skb); + + return 0; +} + static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name) { const struct mt76_connac2_fw_trailer *hdr; @@ -639,13 +687,20 @@ static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name) struct mt76_dev *mdev = &dev->mt76; struct mt792x_phy *phy = &dev->phy; const struct firmware *fw; + u8 *clc_base = NULL, hw_encap = 0; int ret, i, len, offset = 0; - u8 *clc_base = NULL;
if (mt7925_disable_clc || mt76_is_usb(&dev->mt76)) return 0;
+ if (mt76_is_mmio(&dev->mt76)) { + ret = mt7925_mcu_read_eeprom(dev, MT_EE_HW_TYPE, &hw_encap); + if (ret) + return ret; + hw_encap = u8_get_bits(hw_encap, MT_EE_HW_TYPE_ENCAP); + } + ret = request_firmware(&fw, fw_name, mdev->dev); if (ret) return ret; @@ -690,6 +745,10 @@ static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name) if (phy->clc[clc->idx]) continue;
+ /* header content sanity */ + if (u8_get_bits(clc->type, MT_EE_HW_TYPE_ENCAP) != hw_encap) + continue; + phy->clc[clc->idx] = devm_kmemdup(mdev->dev, clc, le32_to_cpu(clc->len), GFP_KERNEL); diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h b/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h index cb7b1a49fbd14..073e433069e0e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h @@ -167,9 +167,12 @@ enum mt7925_eeprom_field { MT_EE_CHIP_ID = 0x000, MT_EE_VERSION = 0x002, MT_EE_MAC_ADDR = 0x004, + MT_EE_HW_TYPE = 0xa71, __MT_EE_MAX = 0x9ff };
+#define MT_EE_HW_TYPE_ENCAP GENMASK(1, 0) + enum { TXPWR_USER, TXPWR_EEPROM,