Merge "soc: qcom: qcom_stats: Add support for deep sleep exit time"

drivers/soc/qcom/qcom_stats.c

@@ -149,6 +149,7 @@ struct stats_drvdata {
 };
 
 static struct stats_drvdata *drv;
+static u64 deep_sleep_last_exited_time;
 
 struct sleep_stats {
 	u32 stat_type;
@@ -275,6 +276,40 @@ static bool ddr_stats_is_freq_overtime(struct sleep_stats *data)
 	return false;
 }
 
+uint64_t get_aosd_sleep_exit_time(void)
+{
+	int i;
+	u64 last_exited_at;
+	u32 count;
+	static u32 saved_deep_sleep_count;
+	u32 s_type = 0;
+	char stat_type[5] = {0};
+
+	for (i = 0; i < drv->config->num_records; i++) {
+		s_type = readl_relaxed(drv->d[i].base);
+		memcpy(stat_type, &s_type, sizeof(u32));
+		strim(stat_type);
+
+		if (!memcmp((const void *)stat_type, (const void *)"aosd", 4)) {
+			count = readl_relaxed(drv->d[i].base + COUNT_OFFSET);
+
+			if (saved_deep_sleep_count == count)
+				deep_sleep_last_exited_time = 0;
+			else {
+				saved_deep_sleep_count = count;
+				last_exited_at = readq_relaxed(drv->d[i].base +
+				LAST_EXITED_AT_OFFSET);
+				deep_sleep_last_exited_time = last_exited_at;
+			}
+			break;
+
+		}
+	}
+
+	return deep_sleep_last_exited_time;
+}
+EXPORT_SYMBOL_GPL(get_aosd_sleep_exit_time);
+
 static u64 qcom_stats_fill_ddr_stats(void __iomem *reg, struct sleep_stats *data, u32 *entry_count)
 {
 	u64 accumulated_duration = 0;

include/soc/qcom/qcom_stats.h

@@ -37,6 +37,7 @@ void subsystem_sleep_debug_enable(bool enable);
 
 int cx_stats_get_ss_vote_info(int ss_count,
 			       struct qcom_stats_cx_vote_info *vote_info);
+uint64_t get_aosd_sleep_exit_time(void);
 
 #else
 
@@ -62,6 +63,8 @@ void subsystem_sleep_debug_enable(bool enable)
 static inline int cx_stats_get_ss_vote_info(int ss_count,
 			       struct qcom_stats_cx_vote_info *vote_info)
 { return -ENODEV; }
+uint64_t get_aosd_sleep_exit_time(void)
+{ return -ENODEV; }
 
 #endif
 #endif /*__QCOM_STATS_H__ */