This provides userspace with a unified interface, hwmon sysfs, to monitor
temperature in the hardware and can be adapted to system monitoring tools.
For reading temperature, cat /sys/class/ieee80211/phy*/hwmon*/temp1_input
Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
---
changes since v2 - drop mutex
---
.../wireless/mediatek/mt76/mt7915/debugfs.c | 14 -----
.../net/wireless/mediatek/mt76/mt7915/init.c | 51 +++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 7 +--
.../wireless/mediatek/mt76/mt7915/mt7915.h | 2 +-
4 files changed, 56 insertions(+), 18 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
index 6a8ddeeecbe9..f1e8b076d54c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
@@ -224,18 +224,6 @@ mt7915_tx_stats_show(struct seq_file *file, void *data)
DEFINE_SHOW_ATTRIBUTE(mt7915_tx_stats);
-static int mt7915_read_temperature(struct seq_file *s, void *data)
-{
- struct mt7915_dev *dev = dev_get_drvdata(s->private);
- int temp;
-
- /* cpu */
- temp = mt7915_mcu_get_temperature(dev, 0);
- seq_printf(s, "Temperature: %d\n", temp);
-
- return 0;
-}
-
static int
mt7915_queues_acq(struct seq_file *s, void *data)
{
@@ -390,8 +378,6 @@ int mt7915_init_debugfs(struct mt7915_dev *dev)
debugfs_create_file("radar_trigger", 0200, dir, dev,
&fops_radar_trigger);
debugfs_create_file("ser_trigger", 0200, dir, dev, &fops_ser_trigger);
- debugfs_create_devm_seqfile(dev->mt76.dev, "temperature", dir,
- mt7915_read_temperature);
debugfs_create_devm_seqfile(dev->mt76.dev, "txpower_sku", dir,
mt7915_read_rate_txpower);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index c13b932b0a44..b1c4dbad837c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -2,6 +2,8 @@
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/etherdevice.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
#include "mt7915.h"
#include "mac.h"
#include "mcu.h"
@@ -67,6 +69,47 @@ static const struct ieee80211_iface_combination if_comb[] = {
}
};
+static ssize_t mt7915_thermal_show_temp(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct mt7915_phy *phy = dev_get_drvdata(dev);
+ int temperature;
+
+ temperature = mt7915_mcu_get_temperature(phy);
+ if (temperature < 0)
+ return temperature;
+
+ /* display in millidegree celcius */
+ return sprintf(buf, "%u\n", temperature * 1000);
+}
+
+static SENSOR_DEVICE_ATTR(temp1_input, 0444, mt7915_thermal_show_temp,
+ NULL, 0);
+
+static struct attribute *mt7915_hwmon_attrs[] = {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ NULL,
+};
+ATTRIBUTE_GROUPS(mt7915_hwmon);
+
+static int mt7915_thermal_init(struct mt7915_phy *phy)
+{
+ struct wiphy *wiphy = phy->mt76->hw->wiphy;
+ struct device *hwmon;
+
+ if (!IS_REACHABLE(CONFIG_HWMON))
+ return 0;
+
+ hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev,
+ wiphy_name(wiphy), phy,
+ mt7915_hwmon_groups);
+ if (IS_ERR(hwmon))
+ return PTR_ERR(hwmon);
+
+ return 0;
+}
+
static void
mt7915_init_txpower(struct mt7915_dev *dev,
struct ieee80211_supported_band *sband)
@@ -286,6 +329,10 @@ static int mt7915_register_ext_phy(struct mt7915_dev *dev)
if (ret)
goto error;
+ ret = mt7915_thermal_init(phy);
+ if (ret)
+ goto error;
+
return 0;
error:
@@ -739,6 +786,10 @@ int mt7915_register_device(struct mt7915_dev *dev)
if (ret)
return ret;
+ ret = mt7915_thermal_init(&dev->phy);
+ if (ret)
+ return ret;
+
ieee80211_queue_work(mt76_hw(dev), &dev->init_work);
ret = mt7915_register_ext_phy(dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 559ad230eabe..17a617df6dba 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -3469,16 +3469,17 @@ int mt7915_mcu_apply_tx_dpd(struct mt7915_phy *phy)
return 0;
}
-int mt7915_mcu_get_temperature(struct mt7915_dev *dev, int index)
+int mt7915_mcu_get_temperature(struct mt7915_phy *phy)
{
+ struct mt7915_dev *dev = phy->dev;
struct {
u8 ctrl_id;
u8 action;
- u8 band;
+ u8 dbdc_idx;
u8 rsv[5];
} req = {
.ctrl_id = THERMAL_SENSOR_TEMP_QUERY,
- .action = index,
+ .dbdc_idx = phy != &dev->phy,
};
return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(THERMAL_CTRL), &req,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 80eb35231a1a..d5296e2d481b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -357,7 +357,7 @@ int mt7915_mcu_set_radar_th(struct mt7915_dev *dev, int index,
const struct mt7915_dfs_pattern *pattern);
int mt7915_mcu_apply_group_cal(struct mt7915_dev *dev);
int mt7915_mcu_apply_tx_dpd(struct mt7915_phy *phy);
-int mt7915_mcu_get_temperature(struct mt7915_dev *dev, int index);
+int mt7915_mcu_get_temperature(struct mt7915_phy *phy);
int mt7915_mcu_get_tx_rate(struct mt7915_dev *dev, u32 cmd, u16 wlan_idx);
int mt7915_mcu_get_rx_rate(struct mt7915_phy *phy, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct rate_info *rate);
--
2.18.0
