dm: timer: Support 64-bit counter
There are timers with a 64-bit counter value but current timer
uclass driver assumes a 32-bit one. Modify timer_get_count()
to ask timer driver to always return a 64-bit counter value,
and provide an inline helper function timer_conv_64() to handle
the 32-bit/64-bit conversion automatically.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/timer.h b/include/timer.h
index ed5c685..7fee17e 100644
--- a/include/timer.h
+++ b/include/timer.h
@@ -8,13 +8,21 @@
#define _TIMER_H_
/*
+ * 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
* @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
@@ -35,10 +43,10 @@
* Get the current timer count
*
* @dev: The timer device
- * @count: pointer that returns the current timer count
+ * @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);
};
/*