hwmon: (lm90) Enable full PEC support for ADT7461A

Experiments show that ADT7461A and NCT1008 support PEC, even though it is
not documented. Enable support for it in the driver. Since ADT7461 only
supports partial PEC, this means that the configuration for ADT7461A
needs to be separated from ADT7461.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/lm90.c

@@ -114,7 +114,7 @@ static const unsigned short normal_i2c[] = {
 	0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x48, 0x49, 0x4a, 0x4b, 0x4c,
 	0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
 
-enum chips { adm1032, adt7461, g781, lm86, lm90, lm99,
+enum chips { adm1032, adt7461, adt7461a, g781, lm86, lm90, lm99,
 	max6646, max6654, max6657, max6659, max6680, max6696,
 	sa56004, tmp451, tmp461, w83l771,
 };
@@ -207,7 +207,7 @@ enum chips { adm1032, adt7461, g781, lm86, lm90, lm99,
 static const struct i2c_device_id lm90_id[] = {
 	{ "adm1032", adm1032 },
 	{ "adt7461", adt7461 },
-	{ "adt7461a", adt7461 },
+	{ "adt7461a", adt7461a },
 	{ "g781", g781 },
 	{ "lm90", lm90 },
 	{ "lm86", lm86 },
@@ -224,7 +224,7 @@ static const struct i2c_device_id lm90_id[] = {
 	{ "max6681", max6680 },
 	{ "max6695", max6696 },
 	{ "max6696", max6696 },
-	{ "nct1008", adt7461 },
+	{ "nct1008", adt7461a },
 	{ "w83l771", w83l771 },
 	{ "sa56004", sa56004 },
 	{ "tmp451", tmp451 },
@@ -244,7 +244,7 @@ static const struct of_device_id __maybe_unused lm90_of_match[] = {
 	},
 	{
 		.compatible = "adi,adt7461a",
-		.data = (void *)adt7461
+		.data = (void *)adt7461a
 	},
 	{
 		.compatible = "gmt,g781",
@@ -312,7 +312,7 @@ static const struct of_device_id __maybe_unused lm90_of_match[] = {
 	},
 	{
 		.compatible = "onnn,nct1008",
-		.data = (void *)adt7461
+		.data = (void *)adt7461a
 	},
 	{
 		.compatible = "winbond,w83l771",
@@ -360,6 +360,13 @@ static const struct lm90_params lm90_params[] = {
 		.alert_alarms = 0x7c,
 		.max_convrate = 10,
 	},
+	[adt7461a] = {
+		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
+		  | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP
+		  | LM90_HAVE_CRIT | LM90_HAVE_PEC,
+		.alert_alarms = 0x7c,
+		.max_convrate = 10,
+	},
 	[g781] = {
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
 		  | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_CRIT,