X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=include%2Ftimer.h;h=dcc803c392a014ae589d6e7768fcf3b39e5d42fc;hb=db1d20a904f583b39e75ee47828aa9e644245460;hp=cdf385d174c9bf2ae7e7ea11d715a1feffaa9f9a;hpb=e573bdb324c78fac56655a493bea843842c9d9f8;p=u-boot

diff --git a/include/timer.h b/include/timer.h
index cdf385d174..dcc803c392 100644
--- a/include/timer.h
+++ b/include/timer.h
@@ -7,37 +7,55 @@
 #ifndef _TIMER_H_
 #define _TIMER_H_
 
+/*
+ * dm_timer_init - initialize a timer for time keeping. On success
+ * initializes gd->timer so that lib/timer can use it for future
+ * referrence.
+ *
+ * @return - 0 on success or error number
+ */
+int dm_timer_init(void);
+
+/*
+ * timer_conv_64 - convert 32-bit counter value to 64-bit
+ *
+ * @count: 32-bit counter value
+ * @return: 64-bit counter value
+ */
+u64 timer_conv_64(u32 count);
+
 /*
  * Get the current timer count
  *
- * @dev: The Timer device
+ * @dev: The timer device
  * @count: pointer that returns the current timer count
  * @return: 0 if OK, -ve on error
  */
-int timer_get_count(struct udevice *dev, unsigned long *count);
+int timer_get_count(struct udevice *dev, u64 *count);
+
 /*
  * Get the timer input clock frequency
  *
- * @dev: The Timer device
+ * @dev: The timer device
  * @return: the timer input clock frequency
  */
 unsigned long timer_get_rate(struct udevice *dev);
 
 /*
- * struct timer_ops - Driver model Timer operations
+ * struct timer_ops - Driver model timer operations
  *
- * The uclass interface is implemented by all Timer devices which use
+ * The uclass interface is implemented by all timer devices which use
  * driver model.
  */
 struct timer_ops {
 	/*
 	 * Get the current timer count
 	 *
-	 * @dev: The Timer device
-	 * @count: pointer that returns the current timer count
+	 * @dev: The timer device
+	 * @count: pointer that returns the current 64-bit timer count
 	 * @return: 0 if OK, -ve on error
 	 */
-	int (*get_count)(struct udevice *dev, unsigned long *count);
+	int (*get_count)(struct udevice *dev, u64 *count);
 };
 
 /*
@@ -49,4 +67,25 @@ struct timer_dev_priv {
 	unsigned long clock_rate;
 };
 
+/**
+ * timer_early_get_count() - Implement timer_get_count() before driver model
+ *
+ * If CONFIG_TIMER_EARLY is enabled, this function wil be called to return
+ * the current timer value before the proper driver model timer is ready.
+ * It should be implemented by one of the timer values. This is mostly useful
+ * for tracing.
+ */
+u64 timer_early_get_count(void);
+
+/**
+ * timer_early_get_rate() - Get the timer rate before driver model
+ *
+ * If CONFIG_TIMER_EARLY is enabled, this function wil be called to return
+ * the current timer rate in Hz before the proper driver model timer is ready.
+ * It should be implemented by one of the timer values. This is mostly useful
+ * for tracing. This corresponds to the clock_rate value in struct
+ * timer_dev_priv.
+ */
+unsigned long timer_early_get_rate(void);
+
 #endif	/* _TIMER_H_ */