summaryrefslogtreecommitdiff
path: root/drivers/pps/clients/Kconfig
diff options
context:
space:
mode:
authorJames Nuss <jamesnuss@nanometrics.ca>2011-11-02 13:39:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-02 16:07:02 -0700
commit161520451dfacd0eb79d501933f47d3fb7464938 (patch)
tree6a3f613d005d32cdf7aeb725bac00ed55c45b929 /drivers/pps/clients/Kconfig
parent437c53418616973071fd2d7c87497780944d8fdb (diff)
pps: new client driver using GPIO
This client driver allows you to use a GPIO pin as a source for PPS signals. Platform data [1] are used to specify the GPIO pin number, label, assert event edge type, and whether clear events are captured. This driver is based on the work by Ricardo Martins who submitted an initial implementation [2] of a PPS IRQ client driver to the linuxpps mailing-list on Dec 3 2010. [1] include/linux/pps-gpio.h [2] http://ml.enneenne.com/pipermail/linuxpps/2010-December/004155.html [akpm@linux-foundation.org: remove unneeded cast of void*] Signed-off-by: James Nuss <jamesnuss@nanometrics.ca> Cc: Ricardo Martins <rasm@fe.up.pt> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Ricardo Martins <rasm@fe.up.pt> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Igor Plyatov <plyatov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/pps/clients/Kconfig')
-rw-r--r--drivers/pps/clients/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pps/clients/Kconfig b/drivers/pps/clients/Kconfig
index 8520a7f4dd62..c2e0f1e97bcd 100644
--- a/drivers/pps/clients/Kconfig
+++ b/drivers/pps/clients/Kconfig
@@ -29,4 +29,13 @@ config PPS_CLIENT_PARPORT
If you say yes here you get support for a PPS source connected
with the interrupt pin of your parallel port.
+config PPS_CLIENT_GPIO
+ tristate "PPS client using GPIO"
+ depends on PPS
+ help
+ If you say yes here you get support for a PPS source using
+ GPIO. To be useful you must also register a platform device
+ specifying the GPIO pin and other options, usually in your board
+ setup.
+
endif