path: root/drivers/ptp/ptp_clock.c
AgeCommit message (Collapse)Author
2012-09-22ptp: link the phc device to its parent deviceRichard Cochran
PTP Hardware Clock devices appear as class devices in sysfs. This patch changes the registration API to use the parent device, clarifying the clock's relationship to the underlying device. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-22ptp: provide the clock's adjusted frequencyRichard Cochran
If the timex.mode field indicates a query, then we provide the value of the current frequency adjustment. [ Get rid of extraneous empty lines -DaveM ] Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-22ptp: remember the adjusted frequencyRichard Cochran
This patch adds a field to the representation of a PTP hardware clock in order to remember the frequency adjustment value dialed by the user. Adding this field will let us answer queries in the manner of adjtimex in a follow on patch. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-07pps/ptp: Allow PHC devices to adjust PPS events for known delayBen Hutchings
Initial version by Stuart Hodgson <smhodgson@solarflare.com> Some PHC device drivers may deliver PPS events with a significant and variable delay, but still be able to measure precisely what that delay is. Add a pps_sub_ts() function for subtracting a delay from the timestamp(s) in a PPS event, and a PTP event type (PTP_CLOCK_PPSUSR) for which the caller provides a complete PPS event. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-04-04ptp: Add a method for obtaining the device index.Richard Cochran
This commit adds a method that MAC drivers may call in order to find out the device number of their associated PTP Hardware Clock. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-17phc: Update author's email address.Richard Cochran
This commit brings the author email address macros up to date for four modules in the PTP Hardware Clock subsystem. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06ptp: Fix clock_getres() implementationThomas Gleixner
The clock_getres() function must return the resolution in the timespec argument and return 0 for success. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <john.stultz@linaro.org> Cc: stable@kernel.org Cc: Richard Cochran <richard.cochran@omicron.at>
2011-05-23ptp: Added a brand new class driver for ptp clocks.Richard Cochran
This patch adds an infrastructure for hardware clocks that implement IEEE 1588, the Precision Time Protocol (PTP). A class driver offers a registration method to particular hardware clock drivers. Each clock is presented as a standard POSIX clock. The ancillary clock features are exposed in two different ways, via the sysfs and by a character device. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John Stultz <john.stultz@linaro.org>