diff options
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/gpio.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/uapi/linux/gpio.h b/include/uapi/linux/gpio.h index 2072c260f5d0..e4eb0b8c5cf9 100644 --- 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; |