drivers: thermal: tsens: Introduce IP-specific max_sensor count

The IP can support 'm' sensors while the platform can enable 'n' sensors
of the 'm' where n <= m.

Track maximum sensors supported by the IP so that we can correctly track
what subset of the sensors are supported on the platform.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

drivers/thermal/qcom/tsens-common.c

@@ -198,7 +198,7 @@ int __init init_common(struct tsens_priv *priv)
 		goto err_put_device;
 	}
 	/* now alloc regmap_fields in tm_map */
-	for (i = 0, j = LAST_TEMP_0; i < priv->num_sensors; i++, j++) {
+	for (i = 0, j = LAST_TEMP_0; i < priv->feat->max_sensors; i++, j++) {
 		priv->rf[j] = devm_regmap_field_alloc(dev, priv->tm_map,
 						      priv->fields[j]);
 		if (IS_ERR(priv->rf[j])) {
@@ -206,7 +206,7 @@ int __init init_common(struct tsens_priv *priv)
 			goto err_put_device;
 		}
 	}
-	for (i = 0, j = VALID_0; i < priv->num_sensors; i++, j++) {
+	for (i = 0, j = VALID_0; i < priv->feat->max_sensors; i++, j++) {
 		priv->rf[j] = devm_regmap_field_alloc(dev, priv->tm_map,
 						      priv->fields[j]);
 		if (IS_ERR(priv->rf[j])) {

drivers/thermal/qcom/tsens-v0_1.c

@@ -324,6 +324,7 @@ static const struct tsens_features tsens_v0_1_feat = {
 	.crit_int	= 0,
 	.adc		= 1,
 	.srot_split	= 1,
+	.max_sensors	= 11,
 };
 
 static const struct reg_field tsens_v0_1_regfields[MAX_REGFIELDS] = {

drivers/thermal/qcom/tsens-v2.c

@@ -88,6 +88,7 @@ static const struct tsens_features tsens_v2_feat = {
 	.crit_int	= 1,
 	.adc		= 0,
 	.srot_split	= 1,
+	.max_sensors	= 16,
 };
 
 static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {

drivers/thermal/qcom/tsens.h

@@ -242,12 +242,14 @@ enum regfield_ids {
  * @adc:      do the sensors only output adc code (instead of temperature)?
  * @srot_split: does the IP neatly splits the register space into SROT and TM,
  *              with SROT only being available to secure boot firmware?
+ * @max_sensors: maximum sensors supported by this version of the IP
  */
 struct tsens_features {
 	unsigned int ver_major;
 	unsigned int crit_int:1;
 	unsigned int adc:1;
 	unsigned int srot_split:1;
+	unsigned int max_sensors;
 };
 
 /**