Merge tag 'gpio-v5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...

[sfrench/cifs-2.6.git] / include / uapi / linux / gpio.h

diff --git a/include/uapi/linux/gpio.h b/include/uapi/linux/gpio.h
index 2072c260f5d08df8a70970a8d202f168bdeb8c80..e4eb0b8c5cf9f022a6a0a9582265d539c6c1b723 100644 (file)
--- a/include/uapi/linux/gpio.h
+++ b/include/uapi/linux/gpio.h
@@ -65,6 +65,7 @@ struct gpiochip_info {
  * @GPIO_V2_LINE_FLAG_BIAS_PULL_UP: line has pull-up bias enabled
  * @GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN: line has pull-down bias enabled
  * @GPIO_V2_LINE_FLAG_BIAS_DISABLED: line has bias disabled
+ * @GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME: line events contain REALTIME timestamps
  */
 enum gpio_v2_line_flag {
        GPIO_V2_LINE_FLAG_USED                  = _BITULL(0),
@@ -78,6 +79,7 @@ enum gpio_v2_line_flag {
        GPIO_V2_LINE_FLAG_BIAS_PULL_UP          = _BITULL(8),
        GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN        = _BITULL(9),
        GPIO_V2_LINE_FLAG_BIAS_DISABLED         = _BITULL(10),
+       GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME  = _BITULL(11),
 };
 
 /**
@@ -270,9 +272,6 @@ enum gpio_v2_line_event_id {
 /**
  * struct gpio_v2_line_event - The actual event being pushed to userspace
  * @timestamp_ns: best estimate of time of event occurrence, in nanoseconds.
- * The @timestamp_ns is read from %CLOCK_MONOTONIC and is intended to allow
- * the accurate measurement of the time between events. It does not provide
- * the wall-clock time.
  * @id: event identifier with value from &enum gpio_v2_line_event_id
  * @offset: the offset of the line that triggered the event
  * @seqno: the sequence number for this event in the sequence of events for
@@ -280,6 +279,13 @@ enum gpio_v2_line_event_id {
  * @line_seqno: the sequence number for this event in the sequence of
  * events on this particular line
  * @padding: reserved for future use
+ *
+ * By default the @timestamp_ns is read from %CLOCK_MONOTONIC and is
+ * intended to allow the accurate measurement of the time between events.
+ * It does not provide the wall-clock time.
+ *
+ * If the %GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME flag is set then the
+ * @timestamp_ns is read from %CLOCK_REALTIME.
  */
 struct gpio_v2_line_event {
        __aligned_u64 timestamp_ns;