hwmon fixes for v5.4-rc3

Update/fix inspur-ipsps1 and k10temp Documentation
 Fix nct7904 driver
 Fix HWMON_P_MIN_ALARM mask in hwmon core
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEiHPvMQj9QTOCiqgVyx8mb86fmYEFAl2iD0IACgkQyx8mb86f
 mYEnFQ//XJMPIukj659J3hwfzxEx3LXucQsQivUhmVXYzPAzdxa9eC97tj1I3pgz
 nKR2BIFvXtI+o3459TWuvj+Y7utmQXRQ5XiP6JBb+Wkn84IK6O0GNKSOPYDNI/3t
 /ii2XY3dERr8BuBPmRuYP7GorjFJH1P7B0FXrln5HLYAyS1yJVioLVhbrbi63NkL
 ngoxZhgcVP5QIbaSFC6ZJs1oqXXVIbvBEkt9bjkmDhJssmPtFweVxvIUnWUoPdAg
 A/GvmOddhRa/9vXzZbNThOFOLq7nHguIDvbIwizULMRHfDHB5aFEqyz9W/OFqSj5
 8s+GRiO1oYBxVrz4Bl32pR0aCJbZ5WlxhgKrLdlunRnATAzXpLzRAbKhOhoBchJZ
 xyC+96q0x8GIJ5dBqm2XqZhJssZgfgb/6SSlzSu+r6aQogHQc1/PDL26PHR517E5
 T/pUNY97LvOOgiosDuaLiGpiszoz0WdeHVqdUujnRiN5TtE5u0M6ACdumXGjFb8K
 0sPkep919yaaKNaPYA6u9PCHl4WG5EJdBkY44z4BkCt9scVvXEvATGUxNMwH8Bvm
 95w/swRlN2yq+fa4T4I3UtAAW9EgCJ3LIYYUo1me0SDld2cPwbVkMvOIirD3TBLC
 qoP178X34HaqeozOaW4Hi08QYLzktmCo5KFm6KKNFbFCQZ4oBo4=
 =d+np
 -----END PGP SIGNATURE-----

Merge tag 'hwmon-for-v5.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Update/fix inspur-ipsps1 and k10temp Documentation

 - Fix nct7904 driver

 - Fix HWMON_P_MIN_ALARM mask in hwmon core

* tag 'hwmon-for-v5.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: docs: Extend inspur-ipsps1 title underline
  hwmon: (nct7904) Add array fan_alarm and vsen_alarm to store the alarms in nct7904_data struct.
  docs: hwmon: Include 'inspur-ipsps1.rst' into docs
  hwmon: Fix HWMON_P_MIN_ALARM mask
  hwmon: (k10temp) Update documentation and add temp2_input info
  hwmon: (nct7904) Fix the incorrect value of vsen_mask in nct7904_data struct

Documentation/hwmon/index.rst

@@ -7,6 +7,7 @@ Linux Hardware Monitoring
 
    hwmon-kernel-api
    pmbus-core
+   inspur-ipsps1
    submitting-patches
    sysfs-interface
    userspace-tools

Documentation/hwmon/inspur-ipsps1.rst

@@ -1,5 +1,5 @@
 Kernel driver inspur-ipsps1
-=======================
+===========================
 
 Supported chips:
 

Documentation/hwmon/k10temp.rst

@@ -21,10 +21,17 @@ Supported chips:
 
 * AMD Family 14h processors: "Brazos" (C/E/G/Z-Series)
 
-* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri", "Carrizo"
+* AMD Family 15h processors: "Bulldozer" (FX-Series), "Trinity", "Kaveri",
+  "Carrizo", "Stoney Ridge", "Bristol Ridge"
 
 * AMD Family 16h processors: "Kabini", "Mullins"
 
+* AMD Family 17h processors: "Zen", "Zen 2"
+
+* AMD Family 18h processors: "Hygon Dhyana"
+
+* AMD Family 19h processors: "Zen 3"
+
   Prefix: 'k10temp'
 
   Addresses scanned: PCI space
@@ -110,3 +117,12 @@ The maximum value for Tctl is available in the file temp1_max.
 If the BIOS has enabled hardware temperature control, the threshold at
 which the processor will throttle itself to avoid damage is available in
 temp1_crit and temp1_crit_hyst.
+
+On some AMD CPUs, there is a difference between the die temperature (Tdie) and
+the reported temperature (Tctl). Tdie is the real measured temperature, and
+Tctl is used for fan control. While Tctl is always available as temp1_input,
+the driver exports Tdie temperature as temp2_input for those CPUs which support
+it.
+
+Models from 17h family report relative temperature, the driver aims to
+compensate and report the real temperature.

drivers/hwmon/nct7904.c

@@ -99,6 +99,8 @@ struct nct7904_data {
 	u8 enable_dts;
 	u8 has_dts;
 	u8 temp_mode; /* 0: TR mode, 1: TD mode */
+	u8 fan_alarm[2];
+	u8 vsen_alarm[3];
 };
 
 /* Access functions */
@@ -214,7 +216,15 @@ static int nct7904_read_fan(struct device *dev, u32 attr, int channel,
 				       SMI_STS5_REG + (channel >> 3));
 		if (ret < 0)
 			return ret;
-		*val = (ret >> (channel & 0x07)) & 1;
+		if (!data->fan_alarm[channel >> 3])
+			data->fan_alarm[channel >> 3] = ret & 0xff;
+		else
+			/* If there is new alarm showing up */
+			data->fan_alarm[channel >> 3] |= (ret & 0xff);
+		*val = (data->fan_alarm[channel >> 3] >> (channel & 0x07)) & 1;
+		/* Needs to clean the alarm if alarm existing */
+		if (*val)
+			data->fan_alarm[channel >> 3] ^= 1 << (channel & 0x07);
 		return 0;
 	default:
 		return -EOPNOTSUPP;
@@ -298,7 +308,15 @@ static int nct7904_read_in(struct device *dev, u32 attr, int channel,
 				       SMI_STS1_REG + (index >> 3));
 		if (ret < 0)
 			return ret;
-		*val = (ret >> (index & 0x07)) & 1;
+		if (!data->vsen_alarm[index >> 3])
+			data->vsen_alarm[index >> 3] = ret & 0xff;
+		else
+			/* If there is new alarm showing up */
+			data->vsen_alarm[index >> 3] |= (ret & 0xff);
+		*val = (data->vsen_alarm[index >> 3] >> (index & 0x07)) & 1;
+		/* Needs to clean the alarm if alarm existing */
+		if (*val)
+			data->vsen_alarm[index >> 3] ^= 1 << (index & 0x07);
 		return 0;
 	default:
 		return -EOPNOTSUPP;
@@ -915,12 +933,15 @@ static int nct7904_probe(struct i2c_client *client,
 
 	data->temp_mode = 0;
 	for (i = 0; i < 4; i++) {
-		val = (ret & (0x03 << i)) >> (i * 2);
+		val = (ret >> (i * 2)) & 0x03;
 		bit = (1 << i);
-		if (val == 0)
+		if (val == 0) {
 			data->tcpu_mask &= ~bit;
-		else if (val == 0x1 || val == 0x2)
+		} else {
-			data->temp_mode |= bit;
+			if (val == 0x1 || val == 0x2)
+				data->temp_mode |= bit;
+			data->vsen_mask &= ~(0x06 << (i * 2));
+		}
 	}
 
 	/* PECI */

include/linux/hwmon.h

@@ -235,7 +235,7 @@ enum hwmon_power_attributes {
 #define HWMON_P_LABEL			BIT(hwmon_power_label)
 #define HWMON_P_ALARM			BIT(hwmon_power_alarm)
 #define HWMON_P_CAP_ALARM		BIT(hwmon_power_cap_alarm)
-#define HWMON_P_MIN_ALARM		BIT(hwmon_power_max_alarm)
+#define HWMON_P_MIN_ALARM		BIT(hwmon_power_min_alarm)
 #define HWMON_P_MAX_ALARM		BIT(hwmon_power_max_alarm)
 #define HWMON_P_LCRIT_ALARM		BIT(hwmon_power_lcrit_alarm)
 #define HWMON_P_CRIT_ALARM		BIT(hwmon_power_crit_alarm)