Add cold interrupt support to tsens driver

index b293ed32174b..1692e636d3bd 100644
@@ -23,6 +23,7 @@
 #define TM_Sn_UPPER_LOWER_THRESHOLD_OFF 0x0020
 #define TM_Sn_CRITICAL_THRESHOLD_OFF	0x0060
 #define TM_Sn_STATUS_OFF		0x00a0
+#define TM_COLD_INT_STATUS_OFF		0x00e0
 #define TM_TRDY_OFF			0x00e4
 #define TM_WDOG_LOG_OFF		0x013c
 

@@ -86,6 +87,9 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
 	REG_FIELD_FOR_EACH_SENSOR16(CRITICAL_STATUS, TM_Sn_STATUS_OFF, 19,  19),
 	REG_FIELD_FOR_EACH_SENSOR16(MAX_STATUS,      TM_Sn_STATUS_OFF, 20,  20),
 
+	/* COLD INTERRUPT STATUS */
+	[COLD_STATUS] = REG_FIELD(TM_COLD_INT_STATUS_OFF, 0, 0),
+
 	/* TRDY: 1=ready, 0=in progress */
 	[TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
 };

@@ -93,6 +97,7 @@ static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
 static const struct tsens_ops ops_generic_v2 = {
 	.init		= init_common,
 	.get_temp	= get_temp_tsens_valid,
+	.get_cold_status  = get_cold_int_status,
 };
 
 struct tsens_plat_data data_tsens_v2 = {

160 lines not on this page · raw message

index 59d01162c66a..be532fabef30 100644
@@ -15,6 +15,7 @@
 #define SLOPE_DEFAULT		3200
 #define THRESHOLD_MAX_ADC_CODE	0x3ff
 #define THRESHOLD_MIN_ADC_CODE	0x0
+#define COLD_SENSOR_HW_ID	128
 
 #include <linux/interrupt.h>
 #include <linux/thermal.h>

@@ -34,6 +35,7 @@ enum tsens_irq_type {
 	LOWER,
 	UPPER,
 	CRITICAL,
+	COLD,
 };
 
 /**

@@ -64,6 +66,7 @@ struct tsens_sensor {
  * @suspend: Function to suspend the tsens device
  * @resume: Function to resume the tsens device
  * @get_trend: Function to get the thermal/temp trend
+ * @get_cold_status: Function to get the cold interrupt status
  */
 struct tsens_ops {
 	/* mandatory callbacks */

@@ -76,6 +79,7 @@ struct tsens_ops {
 	int (*suspend)(struct tsens_priv *priv);
 	int (*resume)(struct tsens_priv *priv);
 	int (*get_trend)(struct tsens_sensor *s, enum thermal_trend *trend);
+	int (*get_cold_status)(const struct tsens_sensor *s, bool *cold_status);
 };
 
 #define REG_FIELD_FOR_EACH_SENSOR11(_name, _offset, _startbit, _stopbit) \

@@ -485,6 +489,8 @@ enum regfield_ids {
 	MAX_STATUS_14,
 	MAX_STATUS_15,
 
+	COLD_STATUS,		/* COLD interrupt status */
+
 	/* Keep last */
 	MAX_REGFIELDS
 };

@@ -497,6 +503,7 @@ enum regfield_ids {
  * @srot_split: does the IP neatly splits the register space into SROT and TM,
  *              with SROT only being available to secure boot firmware?
  * @has_watchdog: does this IP support watchdog functionality?
+ * @cold_int: does this IP support COLD interrupt ?
  * @max_sensors: maximum sensors supported by this version of the IP
  */
 struct tsens_features {

@@ -505,6 +512,7 @@ struct tsens_features {
 	unsigned int adc:1;
 	unsigned int srot_split:1;
 	unsigned int has_watchdog:1;
+	unsigned int cold_int:1;
 	unsigned int max_sensors;
 };
 

@@ -551,6 +559,7 @@ struct tsens_context {
  * @ops: pointer to list of callbacks supported by this device
  * @debug_root: pointer to debugfs dentry for all tsens
  * @debug: pointer to debugfs dentry for tsens controller
+ * @cold_sensor: pointer to cold sensor attached to this device
  * @sensor: list of sensors attached to this device
  */
 struct tsens_priv {

@@ -571,6 +580,7 @@ struct tsens_priv {
 
 	struct dentry			*debug_root;
 	struct dentry			*debug;
+	struct tsens_sensor		*cold_sensor;
 
 	struct tsens_sensor		sensor[];
 };

@@ -580,6 +590,7 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mo
 int init_common(struct tsens_priv *priv);
 int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp);
 int get_temp_common(const struct tsens_sensor *s, int *temp);
+int get_cold_int_status(const struct tsens_sensor *s, bool *cold_status);
 
 /* TSENS target */
 extern struct tsens_plat_data data_8960;