From: Howard Hsu <howard-yh.hsu@xxxxxxxxxxxx>
Implement thermal protection commands and support Linux cooling device
control for mt7996 chipsets.
Signed-off-by: Howard Hsu <howard-yh.hsu@xxxxxxxxxxxx>
Signed-off-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
---
.../wireless/mediatek/mt76/mt76_connac_mcu.h | 1 +
.../net/wireless/mediatek/mt76/mt7996/init.c | 102 +++++++++++++++++
.../net/wireless/mediatek/mt76/mt7996/main.c | 8 ++
.../net/wireless/mediatek/mt76/mt7996/mcu.c | 104 ++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7996/mcu.h | 44 ++++++++
.../wireless/mediatek/mt76/mt7996/mt7996.h | 15 +++
6 files changed, 274 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
index 97822f7d46cc..1d8680b153a7 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
@@ -1021,6 +1021,7 @@ enum {
MCU_UNI_EVENT_RDD_REPORT = 0x11,
MCU_UNI_EVENT_ROC = 0x27,
MCU_UNI_EVENT_TX_DONE = 0x2d,
+ MCU_UNI_EVENT_THERMAL = 0x35,
MCU_UNI_EVENT_NIC_CAPAB = 0x43,
MCU_UNI_EVENT_WED_RRO = 0x57,
MCU_UNI_EVENT_PER_STA_INFO = 0x6d,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
index 5af85ddfdc36..02b47b299ea8 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
@@ -43,6 +43,97 @@ static const struct ieee80211_iface_combination if_comb[] = {
}
};
+static int
+mt7996_thermal_get_max_throttle_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
+{
+ *state = MT7996_CDEV_THROTTLE_MAX;
+
+ return 0;
+}
+
+static int
+mt7996_thermal_get_cur_throttle_state(struct thermal_cooling_device *cdev,
+ unsigned long *state)
+{
+ struct mt7996_phy *phy = cdev->devdata;
+
+ *state = phy->cdev_state;
+
+ return 0;
+}
+
+static int
+mt7996_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev,
+ unsigned long state)
+{
+ struct mt7996_phy *phy = cdev->devdata;
+ u8 throttling = MT7996_THERMAL_THROTTLE_MAX - state;
+ int ret;
+
+ if (state > MT7996_CDEV_THROTTLE_MAX) {
+ dev_err(phy->dev->mt76.dev,
+ "please specify a valid throttling state\n");
+ return -EINVAL;
+ }
+
+ if (state == phy->cdev_state)
+ return 0;
+
+ /* cooling_device convention: 0 = no cooling, more = more cooling
+ * mcu convention: 1 = max cooling, more = less cooling
+ */
+ ret = mt7996_mcu_set_thermal_throttling(phy, throttling);
+ if (ret)
+ return ret;
+
+ phy->cdev_state = state;
+
+ return 0;
+}
+
+static const struct thermal_cooling_device_ops mt7996_thermal_ops = {
+ .get_max_state = mt7996_thermal_get_max_throttle_state,
+ .get_cur_state = mt7996_thermal_get_cur_throttle_state,
+ .set_cur_state = mt7996_thermal_set_cur_throttle_state,
+};
+
+static void mt7996_unregister_thermal(struct mt7996_phy *phy)
+{
+ struct wiphy *wiphy = phy->mt76->hw->wiphy;
+
+ if (!phy->cdev)
+ return;
+
+ sysfs_remove_link(&wiphy->dev.kobj, "cooling_device");
+ thermal_cooling_device_unregister(phy->cdev);
+}
+
+static int mt7996_thermal_init(struct mt7996_phy *phy)
+{
+ struct wiphy *wiphy = phy->mt76->hw->wiphy;
+ struct thermal_cooling_device *cdev;
+ const char *name;
+
+ name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7996_%s",
+ wiphy_name(wiphy));
+
+ cdev = thermal_cooling_device_register(name, phy, &mt7996_thermal_ops);
+ if (!IS_ERR(cdev)) {
+ if (sysfs_create_link(&wiphy->dev.kobj, &cdev->device.kobj,
+ "cooling_device") < 0)
+ thermal_cooling_device_unregister(cdev);
+ else
+ phy->cdev = cdev;
+ }
+
+ /* initialize critical/maximum high temperature */
+ phy->throttle_temp[MT7996_CRIT_TEMP_IDX] = MT7996_CRIT_TEMP;
+ phy->throttle_temp[MT7996_MAX_TEMP_IDX] = MT7996_MAX_TEMP;
+
+ return 0;
+}
+
static void mt7996_led_set_config(struct led_classdev *led_cdev,
u8 delay_on, u8 delay_off)
{
@@ -429,6 +520,10 @@ static int mt7996_register_phy(struct mt7996_dev *dev, struct mt7996_phy *phy,
if (ret)
goto error;
+ ret = mt7996_thermal_init(phy);
+ if (ret)
+ goto error;
+
ret = mt7996_init_debugfs(phy);
if (ret)
goto error;
@@ -456,6 +551,8 @@ mt7996_unregister_phy(struct mt7996_phy *phy, enum mt76_band_id band)
if (!phy)
return;
+ mt7996_unregister_thermal(phy);
+
mphy = phy->dev->mt76.phys[band];
mt76_unregister_phy(mphy);
ieee80211_free_hw(mphy->hw);
@@ -1130,6 +1227,10 @@ int mt7996_register_device(struct mt7996_dev *dev)
if (ret)
return ret;
+ ret = mt7996_thermal_init(&dev->phy);
+ if (ret)
+ return ret;
+
ieee80211_queue_work(mt76_hw(dev), &dev->init_work);
ret = mt7996_register_phy(dev, mt7996_phy2(dev), MT_BAND1);
@@ -1154,6 +1255,7 @@ void mt7996_unregister_device(struct mt7996_dev *dev)
cancel_work_sync(&dev->wed_rro.work);
mt7996_unregister_phy(mt7996_phy3(dev), MT_BAND2);
mt7996_unregister_phy(mt7996_phy2(dev), MT_BAND1);
+ mt7996_unregister_thermal(&dev->phy);
mt7996_coredump_unregister(dev);
mt76_unregister_device(&dev->mt76);
mt7996_wed_rro_free(dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
index f074616c7007..33a9d50d3366 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
@@ -51,6 +51,14 @@ int mt7996_run(struct ieee80211_hw *hw)
if (ret)
goto out;
+ ret = mt7996_mcu_set_thermal_throttling(phy, MT7996_THERMAL_THROTTLE_MAX);
+ if (ret)
+ goto out;
+
+ ret = mt7996_mcu_set_thermal_protect(phy, true);
+ if (ret)
+ goto out;
+
set_bit(MT76_STATE_RUNNING, &phy->mt76->state);
ieee80211_queue_delayed_work(hw, &phy->mt76->mac_work,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index e379ac4cc5d3..34e83795c76b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -497,6 +497,34 @@ mt7996_mcu_rx_all_sta_info_event(struct mt7996_dev *dev, struct sk_buff *skb)
}
}
+static void
+mt7996_mcu_rx_thermal_notify(struct mt7996_dev *dev, struct sk_buff *skb)
+{
+#define THERMAL_NOTIFY_TAG 0x4
+#define THERMAL_NOTIFY 0x2
+ struct mt76_phy *mphy = &dev->mt76.phy;
+ struct mt7996_mcu_thermal_notify *n;
+ struct mt7996_phy *phy;
+
+ n = (struct mt7996_mcu_thermal_notify *)skb->data;
+
+ if (le16_to_cpu(n->tag) != THERMAL_NOTIFY_TAG)
+ return;
+
+ if (n->event_id != THERMAL_NOTIFY)
+ return;
+
+ if (n->band_idx > MT_BAND2)
+ return;
+
+ mphy = dev->mt76.phys[n->band_idx];
+ if (!mphy)
+ return;
+
+ phy = (struct mt7996_phy *)mphy->priv;
+ phy->throttle_state = n->duty_percent;
+}
+
static void
mt7996_mcu_rx_ext_event(struct mt7996_dev *dev, struct sk_buff *skb)
{
@@ -520,6 +548,9 @@ mt7996_mcu_rx_unsolicited_event(struct mt7996_dev *dev, struct sk_buff *skb)
case MCU_EVENT_EXT:
mt7996_mcu_rx_ext_event(dev, skb);
break;
+ case MCU_UNI_EVENT_THERMAL:
+ mt7996_mcu_rx_thermal_notify(dev, skb);
+ break;
default:
break;
}
@@ -3571,6 +3602,79 @@ int mt7996_mcu_get_chan_mib_info(struct mt7996_phy *phy, bool chan_switch)
return 0;
}
+int mt7996_mcu_set_thermal_throttling(struct mt7996_phy *phy, u8 state)
+{
+ struct {
+ u8 _rsv[4];
+
+ __le16 tag;
+ __le16 len;
+
+ struct mt7996_mcu_thermal_ctrl ctrl;
+ } __packed req = {
+ .tag = cpu_to_le16(UNI_CMD_THERMAL_PROTECT_DUTY_CONFIG),
+ .len = cpu_to_le16(sizeof(req) - 4),
+ .ctrl = {
+ .band_idx = phy->mt76->band_idx,
+ },
+ };
+ int level, ret;
+
+ /* set duty cycle and level */
+ for (level = 0; level < 4; level++) {
+ req.ctrl.duty.duty_level = level;
+ req.ctrl.duty.duty_cycle = state;
+ state /= 2;
+
+ ret = mt76_mcu_send_msg(&phy->dev->mt76, MCU_WM_UNI_CMD(THERMAL),
+ &req, sizeof(req), false);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+int mt7996_mcu_set_thermal_protect(struct mt7996_phy *phy, bool enable)
+{
+#define SUSTAIN_PERIOD 10
+ struct {
+ u8 _rsv[4];
+
+ __le16 tag;
+ __le16 len;
+
+ struct mt7996_mcu_thermal_ctrl ctrl;
+ struct mt7996_mcu_thermal_enable enable;
+ } __packed req = {
+ .len = cpu_to_le16(sizeof(req) - 4 - sizeof(req.enable)),
+ .ctrl = {
+ .band_idx = phy->mt76->band_idx,
+ .type.protect_type = 1,
+ .type.trigger_type = 1,
+ },
+ };
+ int ret;
+
+ req.tag = cpu_to_le16(UNI_CMD_THERMAL_PROTECT_DISABLE);
+
+ ret = mt76_mcu_send_msg(&phy->dev->mt76, MCU_WM_UNI_CMD(THERMAL),
+ &req, sizeof(req) - sizeof(req.enable), false);
+ if (ret || !enable)
+ return ret;
+
+ /* set high-temperature trigger threshold */
+ req.tag = cpu_to_le16(UNI_CMD_THERMAL_PROTECT_ENABLE);
+ req.enable.restore_temp = cpu_to_le32(phy->throttle_temp[0]);
+ req.enable.trigger_temp = cpu_to_le32(phy->throttle_temp[1]);
+ req.enable.sustain_time = cpu_to_le16(SUSTAIN_PERIOD);
+
+ req.len = cpu_to_le16(sizeof(req) - 4);
+
+ return mt76_mcu_send_msg(&phy->dev->mt76, MCU_WM_UNI_CMD(THERMAL),
+ &req, sizeof(req), false);
+}
+
int mt7996_mcu_set_ser(struct mt7996_dev *dev, u8 action, u8 val, u8 band)
{
struct {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
index e32a78d6622b..4a73850db9c0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
@@ -30,6 +30,28 @@ struct mt7996_mcu_uni_event {
__le32 status; /* 0: success, others: fail */
} __packed;
+struct mt7996_mcu_thermal_ctrl {
+ u8 ctrl_id;
+ u8 band_idx;
+ union {
+ struct {
+ u8 protect_type; /* 1: duty admit, 2: radio off */
+ u8 trigger_type; /* 0: low, 1: high */
+ } __packed type;
+ struct {
+ u8 duty_level; /* level 0~3 */
+ u8 duty_cycle;
+ } __packed duty;
+ };
+} __packed;
+
+struct mt7996_mcu_thermal_enable {
+ __le32 trigger_temp;
+ __le32 restore_temp;
+ __le16 sustain_time;
+ u8 rsv[2];
+} __packed;
+
struct mt7996_mcu_csa_notify {
struct mt7996_mcu_rxd rxd;
@@ -214,6 +236,22 @@ enum {
UNI_WED_RRO_BA_SESSION_DELETE,
};
+struct mt7996_mcu_thermal_notify {
+ struct mt7996_mcu_rxd rxd;
+
+ u8 __rsv1[4];
+
+ __le16 tag;
+ __le16 len;
+
+ u8 event_id;
+ u8 band_idx;
+ u8 level_idx;
+ u8 duty_percent;
+ __le32 restore_temp;
+ u8 __rsv2[4];
+} __packed;
+
enum mt7996_chan_mib_offs {
UNI_MIB_OBSS_AIRTIME = 26,
UNI_MIB_NON_WIFI_TIME = 27,
@@ -719,6 +757,12 @@ enum{
UNI_CMD_SR_SET_SIGA = 0xd0,
};
+enum {
+ UNI_CMD_THERMAL_PROTECT_ENABLE = 0x6,
+ UNI_CMD_THERMAL_PROTECT_DISABLE,
+ UNI_CMD_THERMAL_PROTECT_DUTY_CONFIG,
+};
+
enum {
UNI_CMD_ACCESS_REG_BASIC = 0x0,
UNI_CMD_ACCESS_RF_REG_BASIC,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index 6acc0ae286fa..61e0f905d902 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -50,6 +50,13 @@
#define MT7996_BASIC_RATES_TBL 11
#define MT7996_BEACON_RATES_TBL 25
+#define MT7996_THERMAL_THROTTLE_MAX 100
+#define MT7996_CDEV_THROTTLE_MAX 99
+#define MT7996_CRIT_TEMP_IDX 0
+#define MT7996_MAX_TEMP_IDX 1
+#define MT7996_CRIT_TEMP 110
+#define MT7996_MAX_TEMP 120
+
#define MT7996_RRO_MAX_SESSION 1024
#define MT7996_RRO_WINDOW_MAX_LEN 1024
#define MT7996_RRO_ADDR_ELEM_LEN 128
@@ -195,6 +202,11 @@ struct mt7996_phy {
struct ieee80211_vif *monitor_vif;
+ struct thermal_cooling_device *cdev;
+ u8 cdev_state;
+ u8 throttle_state;
+ u32 throttle_temp[2]; /* 0: critical high, 1: maximum */
+
u32 rxfilter;
u64 omac_mask;
@@ -453,6 +465,9 @@ int mt7996_mcu_set_radio_en(struct mt7996_phy *phy, bool enable);
int mt7996_mcu_set_rts_thresh(struct mt7996_phy *phy, u32 val);
int mt7996_mcu_set_timing(struct mt7996_phy *phy, struct ieee80211_vif *vif);
int mt7996_mcu_get_chan_mib_info(struct mt7996_phy *phy, bool chan_switch);
+int mt7996_mcu_get_temperature(struct mt7996_phy *phy);
+int mt7996_mcu_set_thermal_throttling(struct mt7996_phy *phy, u8 state);
+int mt7996_mcu_set_thermal_protect(struct mt7996_phy *phy, bool enable);
int mt7996_mcu_rdd_cmd(struct mt7996_dev *dev, int cmd, u8 index,
u8 rx_sel, u8 val);
int mt7996_mcu_rdd_background_enable(struct mt7996_phy *phy,
--
2.39.2
