configs: migrate CONFIG_VIDEO_BMP_RLE8 to defconfigs

[platform/kernel/u-boot.git] / include / timer.h

diff --git a/include/timer.h b/include/timer.h
index f14725c..8b9fa51 100644 (file)
--- a/include/timer.h
+++ b/include/timer.h
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef _TIMER_H_
@@ -16,6 +15,21 @@
  */
 int dm_timer_init(void);
 
+/**
+ * timer_timebase_fallback() - Helper for timers using timebase fallback
+ * @dev: A timer partially-probed timer device
+ *
+ * This is a helper function designed for timers which need to fall back on the
+ * cpu's timebase. This function is designed to be called during the driver's
+ * probe(). If there is a clocks or clock-frequency property in the timer's
+ * binding, then it will be used. Otherwise, the timebase of the current cpu
+ * will be used. This is initialized by the cpu driver, and usually gotten from
+ * ``/cpus/timebase-frequency`` or ``/cpus/cpu@X/timebase-frequency``.
+ *
+ * Return: 0 if OK, or negative error code on failure
+ */
+int timer_timebase_fallback(struct udevice *dev);
+
 /*
  * timer_conv_64 - convert 32-bit counter value to 64-bit
  *
@@ -67,4 +81,25 @@ 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_ */