hwmon: (lm90) Introduce flag indicating extended temperature support

A flag indicating extended temperature support makes it easier
to add support for additional chips with this functionality.

Cc: David T. Wilson <david.wilson@nasa.gov>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 567b7c521f38836f605b4dafdffd731690fb03d3..1a1d7bfcb30b06a6548ef6bcdc671387ff891f8a 100644 (file)
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -182,7 +182,8 @@ enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
 #define LM90_HAVE_EMERGENCY_ALARM (1 << 5)/* emergency alarm           */
 #define LM90_HAVE_TEMP3                (1 << 6) /* 3rd temperature sensor      */
 #define LM90_HAVE_BROKEN_ALERT (1 << 7) /* Broken alert                */
-#define LM90_PAUSE_FOR_CONFIG  (1 << 8) /* Pause conversion for config */
+#define LM90_HAVE_EXTENDED_TEMP        (1 << 8) /* extended temperature support*/
+#define LM90_PAUSE_FOR_CONFIG  (1 << 9) /* Pause conversion for config */
 
 /* LM90 status */
 #define LM90_STATUS_LTHRM      (1 << 0) /* local THERM limit tripped */
@@ -350,7 +351,7 @@ static const struct lm90_params lm90_params[] = {
        },
        [adt7461] = {
                .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
-                 | LM90_HAVE_BROKEN_ALERT,
+                 | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP,
                .alert_alarms = 0x7c,
                .max_convrate = 10,
        },
@@ -422,7 +423,7 @@ static const struct lm90_params lm90_params[] = {
        },
        [tmp451] = {
                .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
-                 | LM90_HAVE_BROKEN_ALERT,
+                 | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP,
                .alert_alarms = 0x7c,
                .max_convrate = 9,
                .reg_local_ext = TMP451_REG_R_LOCAL_TEMPL,
@@ -998,7 +999,7 @@ static int lm90_get_temp11(struct lm90_data *data, int index)
        s16 temp11 = data->temp11[index];
        int temp;
 
-       if (data->kind == adt7461 || data->kind == tmp451)
+       if (data->flags & LM90_HAVE_EXTENDED_TEMP)
                temp = temp_from_u16_adt7461(data, temp11);
        else if (data->kind == max6646)
                temp = temp_from_u16(temp11);
@@ -1035,7 +1036,7 @@ static int lm90_set_temp11(struct lm90_data *data, int index, long val)
                val -= 16000;
        }
 
-       if (data->kind == adt7461 || data->kind == tmp451)
+       if (data->flags & LM90_HAVE_EXTENDED_TEMP)
                data->temp11[index] = temp_to_u16_adt7461(data, val);
        else if (data->kind == max6646)
                data->temp11[index] = temp_to_u8(val) << 8;
@@ -1062,7 +1063,7 @@ static int lm90_get_temp8(struct lm90_data *data, int index)
        s8 temp8 = data->temp8[index];
        int temp;
 
-       if (data->kind == adt7461 || data->kind == tmp451)
+       if (data->flags & LM90_HAVE_EXTENDED_TEMP)
                temp = temp_from_u8_adt7461(data, temp8);
        else if (data->kind == max6646)
                temp = temp_from_u8(temp8);
@@ -1098,7 +1099,7 @@ static int lm90_set_temp8(struct lm90_data *data, int index, long val)
                val -= 16000;
        }
 
-       if (data->kind == adt7461 || data->kind == tmp451)
+       if (data->flags & LM90_HAVE_EXTENDED_TEMP)
                data->temp8[index] = temp_to_u8_adt7461(data, val);
        else if (data->kind == max6646)
                data->temp8[index] = temp_to_u8(val);
@@ -1116,7 +1117,7 @@ static int lm90_get_temphyst(struct lm90_data *data, int index)
 {
        int temp;
 
-       if (data->kind == adt7461 || data->kind == tmp451)
+       if (data->flags & LM90_HAVE_EXTENDED_TEMP)
                temp = temp_from_u8_adt7461(data, data->temp8[index]);
        else if (data->kind == max6646)
                temp = temp_from_u8(data->temp8[index]);
@@ -1136,7 +1137,7 @@ static int lm90_set_temphyst(struct lm90_data *data, long val)
        int temp;
        int err;
 
-       if (data->kind == adt7461 || data->kind == tmp451)
+       if (data->flags & LM90_HAVE_EXTENDED_TEMP)
                temp = temp_from_u8_adt7461(data, data->temp8[LOCAL_CRIT]);
        else if (data->kind == max6646)
                temp = temp_from_u8(data->temp8[LOCAL_CRIT]);
@@ -1685,7 +1686,7 @@ static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
        lm90_set_convrate(client, data, 500); /* 500ms; 2Hz conversion rate */
 
        /* Check Temperature Range Select */
-       if (data->kind == adt7461 || data->kind == tmp451) {
+       if (data->flags & LM90_HAVE_EXTENDED_TEMP) {
                if (config & 0x04)
                        data->flags |= LM90_FLAG_ADT7461_EXT;
        }