diff options
| author | Tom Burkart <tom@aussec.com> | 2019-05-14 15:45:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 19:52:51 -0700 |
| commit | 4c69add45fec995ce23b21dc90be20f1efd8cdad (patch) | |
| tree | eaa128acbef1efe8456cdb72892549b03bef78f1 /include | |
| parent | 652e22185a4414143a1d17975bd9ef0b12ea7b37 (diff) | |
pps: pps-gpio PPS ECHO implementation
This patch implements the PPS ECHO functionality for pps-gpio, that
sysfs claims is available already.
Configuration is done via device tree bindings.
No changes are made to userspace interfaces.
This patch was originally written by Lukas Senger as part of a masters
thesis project and modified for inclusion into the linux kernel by Tom
Burkart.
Link: http://lkml.kernel.org/r/20190324043305.6627-4-tom@aussec.com
Signed-off-by: Tom Burkart <tom@aussec.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Signed-off-by: Lukas Senger <lukas@fridolin.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pps-gpio.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pps-gpio.h b/include/linux/pps-gpio.h index f028d2cda6f5..44171e6b7197 100644 --- a/include/linux/pps-gpio.h +++ b/include/linux/pps-gpio.h @@ -24,8 +24,10 @@ struct pps_gpio_platform_data { struct gpio_desc *gpio_pin; + struct gpio_desc *echo_pin; bool assert_falling_edge; bool capture_clear; + unsigned int echo_active_ms; }; #endif /* _PPS_GPIO_H */ |