by Shayne Chen

[permalink] [raw]

Subject: [PATCH v2 07/13] wifi: mt76: mt7996: add variants support

There are variants of mt7996 which are different from eht supported and
wtbl size limit. Get the hw caps with CHIP_CONFIG command.

Signed-off-by: Shayne Chen <[email protected]>
---
.../wireless/mediatek/mt76/mt7996/eeprom.c | 27 +++++++++++
.../net/wireless/mediatek/mt76/mt7996/mcu.c | 46 +++++++++++++++++++
.../wireless/mediatek/mt76/mt7996/mt7996.h | 4 ++
3 files changed, 77 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c
index 5d8e0353627e..2e48c5a40f81 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c
@@ -87,6 +87,28 @@ static int mt7996_eeprom_load(struct mt7996_dev *dev)
return mt7996_check_eeprom(dev);
}

+static int mt7996_eeprom_parse_efuse_hw_cap(struct mt7996_dev *dev)
+{
+#define MODE_HE_ONLY BIT(0)
+#define WTBL_SIZE_GROUP GENMASK(31, 28)
+ u32 cap = 0;
+ int ret;
+
+ ret = mt7996_mcu_get_chip_config(dev, &cap);
+ if (ret)
+ return ret;
+
+ if (cap) {
+ dev->has_eht = !(cap & MODE_HE_ONLY);
+ dev->wtbl_size_group = u32_get_bits(cap, WTBL_SIZE_GROUP);
+ }
+
+ if (dev->wtbl_size_group < 2 || dev->wtbl_size_group > 4)
+ dev->wtbl_size_group = 2; /* set default */
+
+ return 0;
+}
+
static int mt7996_eeprom_parse_band_config(struct mt7996_phy *phy)
{
u8 *eeprom = phy->dev->mt76.eeprom.data;
@@ -133,6 +155,7 @@ int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
u8 path, nss, band_idx = phy->mt76->band_idx;
u8 *eeprom = dev->mt76.eeprom.data;
struct mt76_phy *mphy = phy->mt76;
+ int ret;

switch (band_idx) {
case MT_BAND1:
@@ -167,6 +190,10 @@ int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
dev->chainshift[band_idx + 1] = dev->chainshift[band_idx] +
hweight16(mphy->chainmask);

+ ret = mt7996_eeprom_parse_efuse_hw_cap(dev);
+ if (ret)
+ return ret;
+
return mt7996_eeprom_parse_band_config(phy);
}

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index d593ed9e3f73..f42f18f00a26 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -2978,6 +2978,52 @@ int mt7996_mcu_get_eeprom_free_block(struct mt7996_dev *dev, u8 *block_num)
return 0;
}

+int mt7996_mcu_get_chip_config(struct mt7996_dev *dev, u32 *cap)
+{
+#define NIC_CAP 3
+#define UNI_EVENT_CHIP_CONFIG_EFUSE_VERSION 0x21
+ struct {
+ u8 _rsv[4];
+
+ __le16 tag;
+ __le16 len;
+ } __packed req = {
+ .tag = cpu_to_le16(NIC_CAP),
+ .len = cpu_to_le16(sizeof(req) - 4),
+ };
+ struct sk_buff *skb;
+ u8 *buf;
+ int ret;
+
+ ret = mt76_mcu_send_and_get_msg(&dev->mt76,
+ MCU_WM_UNI_CMD_QUERY(CHIP_CONFIG), &req,
+ sizeof(req), true, &skb);
+ if (ret)
+ return ret;
+
+ /* fixed field */
+ skb_pull(skb, 4);
+
+ buf = skb->data;
+ while (buf - skb->data < skb->len) {
+ struct tlv *tlv = (struct tlv *)buf;
+
+ switch (le16_to_cpu(tlv->tag)) {
+ case UNI_EVENT_CHIP_CONFIG_EFUSE_VERSION:
+ *cap = le32_to_cpu(*(__le32 *)(buf + sizeof(*tlv)));
+ break;
+ default:
+ break;
+ };
+
+ buf += le16_to_cpu(tlv->len);
+ }
+
+ dev_kfree_skb(skb);
+
+ return 0;
+}
+
int mt7996_mcu_get_chan_mib_info(struct mt7996_phy *phy, bool chan_switch)
{
struct {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index 725344791b4c..00f3beda74cc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -264,6 +264,7 @@ struct mt7996_dev {
bool dbdc_support:1;
bool tbtc_support:1;
bool flash_mode:1;
+ bool has_eht:1;

bool ibf;
u8 fw_debug_wm;
@@ -281,6 +282,8 @@ struct mt7996_dev {

u32 reg_l1_backup;
u32 reg_l2_backup;
+
+ u8 wtbl_size_group;
};

enum {
@@ -419,6 +422,7 @@ int mt7996_mcu_set_fixed_rate_ctrl(struct mt7996_dev *dev,
int mt7996_mcu_set_eeprom(struct mt7996_dev *dev);
int mt7996_mcu_get_eeprom(struct mt7996_dev *dev, u32 offset);
int mt7996_mcu_get_eeprom_free_block(struct mt7996_dev *dev, u8 *block_num);
+int mt7996_mcu_get_chip_config(struct mt7996_dev *dev, u32 *cap);
int mt7996_mcu_set_ser(struct mt7996_dev *dev, u8 action, u8 set, u8 band);
int mt7996_mcu_set_txbf(struct mt7996_dev *dev, u8 action);
int mt7996_mcu_set_fcc5_lpn(struct mt7996_dev *dev, int val);
--
2.25.1