This adds support for the temperature sensor being available from
RTL8125B. Register information was taken from r8125 vendor driver.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
v2:
- don't omit identifiers in definition of r8169_hwmon_is_visible()
---
drivers/net/ethernet/realtek/r8169_main.c | 44 +++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 305ec19cc..6a9259d85 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -16,6 +16,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
+#include <linux/hwmon.h>
#include <linux/phy.h>
#include <linux/if_vlan.h>
#include <linux/in.h>
@@ -5363,6 +5364,43 @@ static bool rtl_aspm_is_safe(struct rtl8169_private *tp)
return false;
}
+static umode_t r8169_hwmon_is_visible(const void *drvdata,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ return 0444;
+}
+
+static int r8169_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ struct rtl8169_private *tp = dev_get_drvdata(dev);
+ int val_raw;
+
+ val_raw = phy_read_paged(tp->phydev, 0xbd8, 0x12) & 0x3ff;
+ if (val_raw >= 512)
+ val_raw -= 1024;
+
+ *val = 1000 * val_raw / 2;
+
+ return 0;
+}
+
+static const struct hwmon_ops r8169_hwmon_ops = {
+ .is_visible = r8169_hwmon_is_visible,
+ .read = r8169_hwmon_read,
+};
+
+static const struct hwmon_channel_info * const r8169_hwmon_info[] = {
+ HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
+ NULL
+};
+
+static const struct hwmon_chip_info r8169_hwmon_chip_info = {
+ .ops = &r8169_hwmon_ops,
+ .info = r8169_hwmon_info,
+};
+
static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct rtl8169_private *tp;
@@ -5537,6 +5575,12 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (rc)
return rc;
+ /* The temperature sensor is available from RTl8125B */
+ if (IS_REACHABLE(CONFIG_HWMON) && tp->mac_version >= RTL_GIGA_MAC_VER_63)
+ /* ignore errors */
+ devm_hwmon_device_register_with_info(&pdev->dev, "nic_temp", tp,
+ &r8169_hwmon_chip_info,
+ NULL);
rc = register_netdev(dev);
if (rc)
return rc;
--
2.46.2
