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mt76: mt7615: add support for accessing RF registers via MCU

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Includes debugfs files for testing it.
Will be used for testmode support.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2020-06-18 20:33:32 +02:00
parent 557b5a1747
commit dc80405868
4 changed files with 77 additions and 3 deletions
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28
drivers/net/wireless/mediatek/mt76/mt7615/debugfs.c
View File

@ -285,6 +285,29 @@ mt7615_queues_read(struct seq_file *s, void *data)
return 0;
}
static int
mt7615_rf_reg_set(void *data, u64 val)
{
struct mt7615_dev *dev = data;
mt7615_rf_wr(dev, dev->debugfs_rf_wf, dev->debugfs_rf_reg, val);
return 0;
}
static int
mt7615_rf_reg_get(void *data, u64 *val)
{
struct mt7615_dev *dev = data;
*val = mt7615_rf_rr(dev, dev->debugfs_rf_wf, dev->debugfs_rf_reg);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(fops_rf_reg, mt7615_rf_reg_get, mt7615_rf_reg_set,
"0x%08llx\n");
int mt7615_init_debugfs(struct mt7615_dev *dev)
{
struct dentry *dir;
@ -324,6 +347,11 @@ int mt7615_init_debugfs(struct mt7615_dev *dev)
debugfs_create_devm_seqfile(dev->mt76.dev, "temperature", dir,
mt7615_read_temperature);
debugfs_create_u32("rf_wfidx", 0600, dir, &dev->debugfs_rf_wf);
debugfs_create_u32("rf_regidx", 0600, dir, &dev->debugfs_rf_reg);
debugfs_create_file_unsafe("rf_regval", 0600, dir, dev,
&fops_rf_reg);
return 0;
}
EXPORT_SYMBOL_GPL(mt7615_init_debugfs);

43
drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
View File

@ -151,8 +151,11 @@ void mt7615_mcu_fill_msg(struct mt7615_dev *dev, struct sk_buff *skb,
break;
default:
mcu_txd->cid = MCU_CMD_EXT_CID;
mcu_txd->set_query = MCU_Q_SET;
mcu_txd->ext_cid = cmd;
if (cmd & MCU_QUERY_PREFIX)
mcu_txd->set_query = MCU_Q_QUERY;
else
mcu_txd->set_query = MCU_Q_SET;
mcu_txd->ext_cid = mcu_cmd;
mcu_txd->ext_cid_ack = 1;
break;
}
@ -192,6 +195,10 @@ mt7615_mcu_parse_response(struct mt7615_dev *dev, int cmd,
skb_pull(skb, sizeof(*rxd));
ret = le32_to_cpu(*(__le32 *)skb->data);
break;
case MCU_EXT_CMD_RF_REG_ACCESS | MCU_QUERY_PREFIX:
skb_pull(skb, sizeof(*rxd));
ret = le32_to_cpu(*(__le32 *)&skb->data[8]);
break;
case MCU_UNI_CMD_DEV_INFO_UPDATE:
case MCU_UNI_CMD_BSS_INFO_UPDATE:
case MCU_UNI_CMD_STA_REC_UPDATE:
@ -271,6 +278,38 @@ int mt7615_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data,
}
EXPORT_SYMBOL_GPL(mt7615_mcu_msg_send);
u32 mt7615_rf_rr(struct mt7615_dev *dev, u32 wf, u32 reg)
{
struct {
__le32 wifi_stream;
__le32 address;
__le32 data;
} req = {
.wifi_stream = cpu_to_le32(wf),
.address = cpu_to_le32(reg),
};
return __mt76_mcu_send_msg(&dev->mt76,
MCU_EXT_CMD_RF_REG_ACCESS | MCU_QUERY_PREFIX,
&req, sizeof(req), true);
}
int mt7615_rf_wr(struct mt7615_dev *dev, u32 wf, u32 reg, u32 val)
{
struct {
__le32 wifi_stream;
__le32 address;
__le32 data;
} req = {
.wifi_stream = cpu_to_le32(wf),
.address = cpu_to_le32(reg),
.data = cpu_to_le32(val),
};
return __mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_RF_REG_ACCESS, &req,
sizeof(req), false);
}
static void
mt7615_mcu_csa_finish(void *priv, u8 *mac, struct ieee80211_vif *vif)
{

4
drivers/net/wireless/mediatek/mt76/mt7615/mcu.h
View File

@ -238,8 +238,9 @@ enum {
#define MCU_FW_PREFIX BIT(31)
#define MCU_UNI_PREFIX BIT(30)
#define MCU_CE_PREFIX BIT(29)
#define MCU_QUERY_PREFIX BIT(28)
#define MCU_CMD_MASK ~(MCU_FW_PREFIX | MCU_UNI_PREFIX | \
MCU_CE_PREFIX)
MCU_CE_PREFIX | MCU_QUERY_PREFIX)
enum {
MCU_CMD_TARGET_ADDRESS_LEN_REQ = MCU_FW_PREFIX | 0x01,
@ -254,6 +255,7 @@ enum {
};
enum {
MCU_EXT_CMD_RF_REG_ACCESS = 0x02,
MCU_EXT_CMD_PM_STATE_CTRL = 0x07,
MCU_EXT_CMD_CHANNEL_SWITCH = 0x08,
MCU_EXT_CMD_SET_TX_POWER_CTRL = 0x11,

5
drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
View File

@ -281,6 +281,9 @@ struct mt7615_dev {
struct work_struct wtbl_work;
struct list_head wd_head;
u32 debugfs_rf_wf;
u32 debugfs_rf_reg;
};
enum tx_pkt_queue_idx {
@ -522,6 +525,8 @@ u32 mt7615_mac_get_sta_tid_sn(struct mt7615_dev *dev, int wcid, u8 tid);
int mt7615_mcu_wait_response(struct mt7615_dev *dev, int cmd, int seq);
int mt7615_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data,
int len, bool wait_resp);
u32 mt7615_rf_rr(struct mt7615_dev *dev, u32 wf, u32 reg);
int mt7615_rf_wr(struct mt7615_dev *dev, u32 wf, u32 reg, u32 val);
int mt7615_mcu_set_dbdc(struct mt7615_dev *dev);
int mt7615_mcu_set_eeprom(struct mt7615_dev *dev);
int mt7615_mcu_set_mac_enable(struct mt7615_dev *dev, int band, bool enable);